WO2005090368A1 - Synthetic membrane anchors - Google Patents

Synthetic membrane anchors Download PDF

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Publication number
WO2005090368A1
WO2005090368A1 PCT/NZ2005/000052 NZ2005000052W WO2005090368A1 WO 2005090368 A1 WO2005090368 A1 WO 2005090368A1 NZ 2005000052 W NZ2005000052 W NZ 2005000052W WO 2005090368 A1 WO2005090368 A1 WO 2005090368A1
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WO
WIPO (PCT)
Prior art keywords
dope
synthetic molecule
molecule construct
cell
group
Prior art date
Application number
PCT/NZ2005/000052
Other languages
French (fr)
Inventor
Nicolai Bovin
Lissa Gilliver
Stephen Henry
Elena Korchagina
Original Assignee
Kiwi Ingenuity Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2007504907A priority Critical patent/JP5456250B2/en
Priority to DK05722123.6T priority patent/DK1735323T3/en
Priority to NZ550705A priority patent/NZ550705A/en
Priority to EP05722123.6A priority patent/EP1735323B1/en
Priority to EA200601753A priority patent/EA013183B1/en
Priority to CA2560781A priority patent/CA2560781C/en
Priority to CN200580009170.5A priority patent/CN1938325B/en
Application filed by Kiwi Ingenuity Limited filed Critical Kiwi Ingenuity Limited
Priority to US10/593,829 priority patent/US8013131B2/en
Priority to AU2005223715A priority patent/AU2005223715A1/en
Priority to ES05722123.6T priority patent/ES2654578T3/en
Publication of WO2005090368A1 publication Critical patent/WO2005090368A1/en
Priority to IL178008A priority patent/IL178008A/en
Priority to AU2010203099A priority patent/AU2010203099B2/en
Priority to AU2010203098A priority patent/AU2010203098B2/en
Priority to US13/067,021 priority patent/US8637473B2/en
Priority to US14/108,749 priority patent/US9353349B2/en
Priority to US15/168,144 priority patent/US9809614B2/en
Priority to US15/804,427 priority patent/US10414786B2/en
Priority to US16/571,526 priority patent/US10858384B2/en

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
    • C07H15/02—Acyclic radicals, not substituted by cyclic structures
    • C07H15/04—Acyclic radicals, not substituted by cyclic structures attached to an oxygen atom of the saccharide radical
    • C07H15/10—Acyclic radicals, not substituted by cyclic structures attached to an oxygen atom of the saccharide radical containing unsaturated carbon-to-carbon bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02—Phosphorus compounds
    • C07F9/06—Phosphorus compounds without P—C bonds
    • C07F9/08—Esters of oxyacids of phosphorus
    • C07F9/09—Esters of phosphoric acids
    • C07F9/10—Phosphatides, e.g. lecithin
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H1/00—Processes for the preparation of sugar derivatives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H15/00—Compounds containing hydrocarbon or substituted hydrocarbon radicals directly attached to hetero atoms of saccharide radicals
    • C07H15/02—Acyclic radicals, not substituted by cyclic structures
    • C07H15/04—Acyclic radicals, not substituted by cyclic structures attached to an oxygen atom of the saccharide radical
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/0006—Modification of the membrane of cells, e.g. cell decoration
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/06—Animal cells or tissues; Human cells or tissues
    • C12N5/0602—Vertebrate cells
    • C12N5/0603—Embryonic cells ; Embryoid bodies
    • C12N5/0604—Whole embryos; Culture medium therefor
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/06—Animal cells or tissues; Human cells or tissues
    • C12N5/0602—Vertebrate cells
    • C12N5/0634—Cells from the blood or the immune system
    • C12N5/0641—Erythrocytes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
    • A61K2035/124—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells the cells being hematopoietic, bone marrow derived or blood cells

Definitions

  • the invention relates to synthetic molecules that spontaneously and stably incorporate into lipid bi-layers, including cell membranes. Particularly, although not exclusively, the invention relates to the use of these molecules as synthetic membrane anchors or synthetic molecule constructs to effect qualitative and quantitative changes in the expression of cell surface antigens.
  • Cell surface antigens mediate a range of interactions between cells and their environment. These interactions include cell-cell interactions, cell-surface interactions and cell-solute interactions. Cell surface antigens also mediate intra-cellular signalling.
  • Cells are characterised by qualitative and quantitative differences in the cell surface antigens expressed. Qualitative and quantitative changes in the cell surface antigens expressed alter both cell function (mode of action) and cell functionality (action served).
  • Protein painting is a non-transgenic method for effecting qualitative and/or quantitative changes in the surface antigens expressed by a cell.
  • the method exploits the ability of GPI linked proteins to spontaneously anchor to the cell membrane via their lipid tails.
  • the method described in the specification accompanying international application no. PCT/US98/15124 includes the step of inserting a GPI linked protein isolated from a biological source into a membrane. Isolated GPI-anchored proteins are stated as having an unusual capacity to reintegrate with a cell-surface membrane.
  • the cell membrane is a lipid bilayer that serves as a semi-permeable barrier between the cytoplasm of the cell and this aqueous environment. Localising antigens to the cell surface may also be achieved by the use of glycolipids as membrane anchors.
  • the method described in the specification accompanying international application no. PCT/NZ02/00214 includes the step of inserting a controlled amount of glycolipid into a membrane.
  • the amount of glycolipid inserted is controlled to provide cells with a desired level of antigen expression.
  • the method described in the specification accompanying international application no. PCT/NZ03/00059 includes the step of inserting a modified glycolipid into a membrane as a "membrane anchor".
  • the modified glycolipid provides for the localisation of antigens to the surface of the cell or multicellular structure. New characteristics may thereby be imparted on the cell or multicellular structure.
  • glycolipids or glycolipid-linked antigens typically include the isolation of a glycolipid or glycolipid-linked antigen from a biological source.
  • the isolation of glycolipids or glycolipid-linked antigens from biological sources is costly, variable and isolatable amounts are often limited.
  • Obtaining reagents from zoological sources for therapeutic use is particularly problematic, especially where the reagent or its derivative products are to be administered to a human subject.
  • Synthetic molecules for which the risk of contamination with zoo-pathogenic agents can be excluded are preferred.
  • Synthetic counterparts for naturally occurring glycolipids and synthetic neo-glycolipids have been reported.
  • synthetic glycolipid to be of use as a membrane anchor it must be able to spontaneously and stably incorporate into a lipid bi-layer from an aqueous environment.
  • the utility of synthetic glycolipids in diagnostic or therapeutic applications is further limited to those synthetic glycolipids that will form a solution in saline.
  • Organic solvents and/or detergents used to facilitate the solubilization of glycolipids in saline must be biocompatible. Solvents and detergents must often be excluded or quickly removed as they can be damaging to some cell membranes. The removal of solvents or detergents from such preparations can be problematic.
  • Damage to cell membranes is to be avoided especially where the supply of cells or multicellular structures is limited, e.g. embryos, or the cells are particularly sensitive to perturbation, e.g. hepatocytes.
  • glycolipids and glycolipid- linked antigens isolated from biological sources and facilitate being able to effect qualitative and/or quantitative changes in the surface antigens expressed by a cell.
  • the preceding objects are to be read disjunctively with the object to at least provide the public with a useful choice.
  • the invention consists in a molecule of the structure R-S 2 -L for use as a synthetic membrane anchor or in the preparation of synthetic molecule constructs where:
  • R is a chemically reactive functional group
  • S 2 is a spacer linking R to L
  • L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyl-lipids, including ceramide.
  • R is selected from the group including: 6/s(N-hydroxysuccinimidyl), bis(4- nitrophenyl), 6/s(pentafluorophenyl), £>/s(pentachlorophenyl).
  • S 2 is selected from the group including: -CO(CH 2 ) 3 CO-, -CO(CH 2 ) 4 CO- (adipate (Ad)), and -CO(CH 2 ) 5 CO-.
  • R and S are ester linked.
  • L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids. More preferably L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of trans-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7- hexadecenoic acid, c/s-9-hexadece ⁇ oic acid, c/s-6-octadecenoic acid, cs-9-octadecenoic acid, trans-9-octadecenoic acid, tra ⁇ s-11-oct
  • the lipid is derived from one or more c/s-destaurated fatty acids.
  • L is selected from the group consisting of: 1,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-0-distearyl-sn-glycero-3- phosphatidylethanolamine (DSPE) and rac-1 ,2-dioleoyIglycerol (DOG).
  • DOPE 1,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine
  • DSPE 1 ,2-0-distearyl-sn-glycero-3- phosphatidylethanolamine
  • DOG rac-1 ,2-dioleoyIglycerol
  • L is a glycerophospholipid and the molecule includes the substructure:
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • n 3 to 5 and * is other than H.
  • Ad-DOPE Ad-DOPE
  • Ad-DSPE Ad-DSPE
  • M is typically H, but may be replaced by another monovalent cation such as Na + , K + or NH + .
  • the invention consists in a synthetic molecule construct of the structure F- S1-S2-L where:
  • F is an antigen selected from the group consisting of carbohydrates, proteins, lipids, lectins, avidins and biotin; SrS 2 is a spacer linking F to L; and L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyl-lipids, including ceramide.
  • the molecule is water soluble.
  • the molecule spontaneously incorporates into a lipid bi-layer when a solution of the molecule is contacted with the lipid bi-layer. More preferably the molecule stably incorporates into the lipid bilayer.
  • F, Si, S 2 and L are covalently linked.
  • F is selected from the group consisting of naturally occurring or synthetic glycotopes, antibodies (immunoglobulins), lectins, avidins, and biotin. Most preferably F is selected from the group consisting of naturally occurring or synthetic glycotopes or antibodies (immunoglobulins).
  • L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids. More preferably L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of fra/7S-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7- hexadecenoic acid, c/s-9-hexadecenoic acid, c/s-6-octadecenoic acid, c/s-9-octadecenoic acid, fra/7s-9-octadecenoic acid, trans 1 -o
  • the lipid is derived from one or more c/s-destaurated fatty acids.
  • L is selected from the group consisting of: 1 ,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-0-distearyl-sn-glycero-3- phosphatidylethanolamine (DSPE) and rac-1 ,2-dioleoylglycerol (DOG).
  • L is a glycerophospholipid and the molecule includes the substructure:
  • n 3 to 5
  • X is H or C, and * is other than H.
  • n is 3.
  • S ⁇ -S 2 is selected to provide a water soluble synthetic molecule construct.
  • F is a naturally occurring or synthetic glycotope.
  • F is a naturally occurring or synthetic glycotope consisting of three (trisaccharide) or more sugar units. More preferably F is a glycotope selected from the group consisting of lacto-neo- tetraosyl, lactotetraosyl, lacto-nor-hexaosyl, lacto-iso-octaosyl, globoteraosyl, globo-neo- tetraosyl, globopentaosyl, gangliotetraosyl, gangliotriaosyl, gangliopentaosyl, isoglobotriaosyl, isoglobotetraosyl, mucotriaosyl and mucotetraosyl series of oligosaccharides.
  • F is selected from the group of glycotopes comprising the terminal sugars GalNAc ⁇ 1-3(Fuc ⁇ 1- 2)Gal ⁇ ; Gal ⁇ 1-3Gal ⁇ ; Gal ⁇ ; Gal ⁇ 1-3(Fuc ⁇ 1-2)Gal ⁇ ; NeuAc ⁇ 2-3Gal ⁇ ; NeuAc ⁇ 2-6GaI ⁇ ; Fuc ⁇ l- 2Ga
  • L is a glycerophospholipid and S 2 is selected from the group including: -CO(CH 2 ) CO-, -CO(CH 2 ) 4 CO- (adipate), -CO(CH 2 ) 5 CO- and -CO(CH 2 ) 5 NHCO(CH 2 ) 5 CO-, preferably Si is a C 3 . 5 -aminoalkyl selected from the group consisting of: 3-aminopropyl, 4- aminobutyl, or 5-aminopentyl. More preferably Si is 3-aminopropyl.
  • F is a molecule that mediates a cell-cell or cell-surface interaction.
  • F is carbohydrate, protein or lipid with an affinity for a component expressed on a targeted cell or surface. More preferably F has an affinity for a component expressed on epithelial cells or extra-cellular matrices. Yet more preferably F has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium. Most preferably the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
  • F is a molecule that mediates a cell-solute interaction.
  • F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition.
  • F is a ligand for an antibody (immunoglobulin).
  • Aw-sp-Ad-DOPE (I); the structure:
  • M is typically H, but may be replaced by another monovalent cation such as Na + , K + or NH 4 + .
  • the invention consists in a method of preparing a synthetic molecule construct of the structure F-S 1 -S 2 -L including the steps:
  • A is an activator selected from the group including: b/s(N-hydroxysuccinimidyl), b/s(4- nitrophenyl), ⁇ /s(pentafluorophenyl), 6/s(pentachlorophenyl) esters of carbodioic acids (C 3 to C 7 );
  • L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyi-lipids, including ceramide.
  • F is an antigen selected from the group consisting of carbohydrates, proteins, lipids, lectins, avidins and biotin; and S S 2 is a spacer linking F to L where Si is selected from the group including: primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine; and S 2 is absent or selected from the group including: -CO(CH 2 ) 3 CO-, -CO(CH 2 ) 4 CO- (adipate), and -CO(CH 2 ) 5 CO-.
  • the molecule is water soluble.
  • the molecule spontaneously incorporates into a lipid bi-layer when a solution of the molecule is contacted with the lipid bi-layer. More preferably the molecule stably incorporates into the lipid bilayer.
  • F, Si, S 2 and L are covalently linked.
  • F is selected from the group consisting of naturally occurring or synthetic glycotopes, antibodies (immunoglobulins), lectins, avidins, and biotin. Most preferably F is selected from the group consisting of naturally occurring or synthetic glycotopes or antibodies (immunoglobulins).
  • L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids. More preferably L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of fra ⁇ s-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7- hexadecenoic acid, c/s-9-hexadecenoic acid, c/s-6-octadecenoic acid, c/s-9-octadecenoic acid, fra 7s-9-octadecenoic acid, fra ⁇ s-11
  • the lipid is derived from one or more c/s-destaurated fatty acids.
  • L is selected from the group consisting of: 1 ,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-0-distearyl-sn-glycero-3- phosphatidylethanolamine (DSPE) and rac-1,2-dioleoylglycerol (DOG).
  • L is a glycerophospholipid and the molecule includes the substructure:
  • n 3 to 5
  • X is H or C, and * is other than H.
  • n is 3.
  • a (R-S 2 ) and Si are selected to provide a water soluble synthetic molecule construct.
  • F is a naturally occurring or synthetic glycotope.
  • F is a naturally occurring or synthetic glycotope consisting of three (trisaccharide) or more sugar units. More preferably F is a glycotope selected from the group consisting of lacto-neo- tetraosyl, lactotetraosyl, lacto-nor-hexaosyl, lacto-iso-octaosyl, globoteraosyl, globo-neo- tetraosyl, globopentaosyl, gangliotetraosyl, gangliotriaosyl, gangliopentaosyl, isoglobotriaosyl, isoglobotetraosyl, mucotriaosyl and mucotetraosyl series of oligosaccharides.
  • F is selected from the group of glycotopes comprising the terminal sugars GalNAc ⁇ 1-3(Fuc ⁇ 1- 2)Gal ⁇ ; Gal ⁇ 1-3Gal ⁇ ; Gal ⁇ ; Gal ⁇ 1-3(Fuc ⁇ 1-2)Gal ⁇ ; NeuAc ⁇ 2-3Gal ⁇ ; NeuAc ⁇ 2-6Gal ⁇ ; Fuccrt- 2Gal ⁇ ; Gal ⁇ l -4GlcNAc ⁇ 1 -6(Gal ⁇ 1 -4GlcNAc ⁇ 1 -3)Gal ⁇ ; Fuc ⁇ l -2Gal ⁇ 1 -4GlcNAc ⁇ 1 -6(Fuc ⁇ 1 - 2Gal ⁇ 1-4GlcNAc ⁇ 1-3)Gal ⁇ ; Fuc ⁇ 1-2Gal ⁇ 1-4GlcNAc ⁇ 1-6(NeuAc ⁇ 2-3Gal ⁇ 1-4GlcNAc ⁇ 1- 3)Gal ⁇ ; NeuAc ⁇ 2-3Gal ⁇ 1-4GlcNAc ⁇ 1-6(NeuAc ⁇ 2-3Gal ⁇ 1-4GlcNAc ⁇ 1- 3)Gal
  • L is a glycerophospholipid and S 2 is selected from the group including: -CO(CH 2 ) 3 CO-, -CO(CH 2 ) 4 CO- (adipate), -CO(CH 2 ) 5 CO- (e.g. A is ⁇ /s(N-hydroxysuccinimidyl) adipate), preferably Si is a C 3 - 5 -aminoalkyI selected from the group consisting of: 3- aminopropyl, 4-aminobutyl, or 5-aminopentyl). More preferably Si is 3-aminopropyl.
  • F is a molecule that mediates a cell-cell or cell-surface interaction.
  • F is carbohydrate, protein or lipid with an affinity for a component expressed on a targeted cell or surface. More preferably F has an affinity for a component expressed on epithelial cells or extra-cellular matrices. Yet more preferably F has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium. Most preferably the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
  • F is a molecule that mediates a cell-solute interaction.
  • F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition.
  • F is a ligand for an antibody (immunoglobulin).
  • B tri -sp-Ad-DOPE VI
  • H tri -sp-Ad-DOPE VII
  • Fuc ⁇ 1-2Gal ⁇ 1-3GIcNAc ⁇ 1-3Gal ⁇ 1-4GlcNAc-sp-Ad-DOPE (XII); or the structure: designated Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp-Ad-DOPE (XIII).
  • M is typically H, but may be replaced by another monovalent cation such as Na + , K + or NH 4 + .
  • the invention consists in a water soluble synthetic molecule construct prepared by a method according to the third aspect of the invention.
  • the invention consists in a method of effecting qualitative and/or quantitative changes in the surface antigens expressed by a cell or multi-cellular structure including the step:
  • the cell or multi-cellular structure is of human or murine origin.
  • the concentration of the water soluble synthetic molecule construct in the suspension is in the range 0.1 to 10 mg/mL
  • the temperature is in the range 2 to 37 °C. More preferably the temperature is in the range 2 to 25 °C. Most preferably the temperature is in the range 2 to 4 °C.
  • the ceil is a red blood cell.
  • F is selected from the group of glycotopes comprising the terminal sugars GalNAc ⁇ 1-3(Fuc ⁇ 1-2)Gal ⁇ ; Gal ⁇ 1-3Gal ⁇ ; Gal ⁇ ; Gal ⁇ 1-3(Fuc ⁇ 1-2)Gal ⁇ ; NeuAc ⁇ 2-3Gal ⁇ ; NeuAc ⁇ 2-6Gai ⁇ ; Fuc ⁇ 1-2Gal ⁇ ; Ga
  • the synthetic molecule construct is selected from the group including: A t ⁇ -sp-Ad- DOPE (I); A, ri -spsprAd-DOPE (II); A t ⁇ -sp-Ad-DSPE (III); B t ⁇ -sp-Ad-DOPE (VI); H t ⁇ -sp-Ad- DOPE (VII); H ⁇ -sp-Ad-DOPE (VIII); Gal ⁇ ,-sp-Ad-DOPE (IX); Fuc ⁇ 1-2Gal ⁇ 1-3GlcNAc ⁇ 1- 3GaI ⁇ 1-4GlcNAc-sp-Ad-DOPE (XII); and Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp-Ad-DOPE (XIII).
  • the multi-cellular structure is an embryo.
  • F is an attachment molecule where the attachment molecule has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium.
  • the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
  • the synthetic molecule construct is selected from the group including: A tr i-sp-Ad- DOPE (I); A tr ⁇ -spsp Ad-DOPE (II); A t r,-sp-Ad-DSPE (III); B trl -sp-Ad-DOPE (VI); H t ⁇ -sp-Ad- DOPE (VII); H dl -sp-Ad-DOPE (VIII); Gal ⁇ ,-sp-Ad-DOPE (IX); Fuc ⁇ 1-2Gal ⁇ 1-3GlcNAc ⁇ 1- 3Gal ⁇ 1-4GlcNAc-sp-Ad-DOPE (XII); and Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp-Ad-DOPE (XIII).
  • the cell is red blood cell.
  • F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition. More preferably F is a ligand for an antibody (immunoglobulin).
  • the invention consists in a cell or multi-cellular structure incorporating a water soluble synthetic molecule construct according to the second or fourth aspect of the invention.
  • the cell or multi-cellular structure is of human or murine origin.
  • the cell is a red blood cell incorporating a water soluble synthetic molecule construct selected from the group including: At r j-sp-Ad-DOPE (I); A tri -spsp ⁇ -Ad-DOPE (II); A t ⁇ -sp-Ad-DSPE (III); B t ⁇ -sp-Ad-DOPE (VI); Hm-sp-Ad-DOPE (VII); H dl -sp-Ad-DOPE (VIII); Gal ⁇ r sp-Ad-DOPE (IX); Fuc ⁇ 1-2Gal ⁇ 1-3GlcNAc ⁇ 1-3Gal ⁇ 1-4GlcNAc-sp-Ad-DOPE (XII); and Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp-Ad-DOPE (XIH).
  • a water soluble synthetic molecule construct selected from the group including: At r j-sp-Ad-DOPE (I); A tri
  • the multi-cellular structure is an embryo incorporating a water soluble synthetic molecule construct selected from the group consisting of: Aw-sp-Ad-DOPE (I); A ⁇ - spspi-Ad-DOPE (II); A tri -sp-Ad-DSPE (III); B tri -sp-Ad-DOPE (VI); Hw-sp-Ad-DOPE (VII); H dr sp- Ad-DOPE (VIII); Gal ⁇ r sp-Ad-DOPE (IX); Fuc ⁇ 1-2GaI ⁇ 1-3GIcNAc ⁇ 1-3Gal ⁇ 1-4GlcNAc-sp-Ad- DOPE (XII); and Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp-Ad-DOPE (XIII).
  • Aw-sp-Ad-DOPE I
  • a ⁇ - spspi-Ad-DOPE II
  • the invention consists in a kit comprising a dried preparation or solution of a molecule according to the first aspect of the invention, or a dried preparation or solution of a water soluble synthetic molecule construct according to the second or fourth aspect of the invention.
  • the molecule according to the first aspect of the invention is selected from the group consisting of: Ad-DOPE; sp Ad-DOPE; and Ad-DSPE.
  • Preferably water soluble synthetic molecule construct according to the second or fourth aspect of the invention is selected from the group consisting of: A tr rsp-Ad-DOPE (1); Aw-spsp Ad- DOPE (II); A trl -sp-Ad-DSPE (111); B t n-sp-Ad-DOPE (VI); H tri -sp-Ad-DOPE (VII); H di -sp-Ad-DOPE (VIII); Gal ⁇ r sp-Ad-DOPE (IX); Fuc ⁇ 1-2Gal ⁇ 1-3GlcNAc ⁇ 1-3Gal ⁇ 1-4GlcNAc-sp-Ad-DOPE (XII); and Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp-Ad-DOPE (XIII).
  • the invention consists in a kit comprising a suspension in a suspending solution of cells or multi-cellular structures according to the sixth aspect of the invention.
  • the suspending solution is substantially free of lipid.
  • the cell or multi-cellular structure is of human or murine origin.
  • the cells are red blood cells that do not naturally express A- or B-antigen and incorporate a water soluble synthetic molecule construct selected from the group consisting of: Aw-sp-Ad-DOPE (I); A trr spsp Ad-DOPE (II); Aw-sp-Ad-DSPE (III); Bw-sp-Ad-DOPE (VI); H, ⁇ - sp-Ad-DOPE (VII); H di -sp-Ad-DOPE (VIII); Gal ⁇ ,-sp-Ad-DOPE (IX); Fuc ⁇ 1-2Gal ⁇ 1-3GlcNAc ⁇ 1- 3Gal ⁇ 1-4GlcNAc-sp-Ad-DOPE (XII); and Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp-Ad-DOPE (XIII). More preferably the cells are sensitivity controls.
  • the invention consists in a pharmaceutical preparation comprising a dried preparation or solution of a water soluble synthetic molecule construct according to the second or fifth aspect of the invention.
  • the pharmaceutical preparation is in a form for administration by inhalation.
  • the pharmaceutical preparation is in a form for administration by injection.
  • the invention consists in a pharmaceutical preparation comprising cells or multi-cellular structures according to the sixth aspect of the invention.
  • the cells or multi-cellular structures are of human or murine origin.
  • the pharmaceutical preparation is in a form for administration by inhalation.
  • the pharmaceutical preparation is in a form for administration by injection.
  • the synthetic molecule constructs of the invention spontaneously and stably incorporate into a lipid bi-layer, such as a membrane, when a solution of the molecule is contacted with the lipid bi-layer.
  • a lipid bi-layer such as a membrane
  • the synthetic molecule constructs identified herein have also been found to be water soluble.
  • the synthetic molecule constructs of the invention are used to transform cells resulting in qualitative and/or quantitative changes in the surface antigens expressed. It will be recognised that the transformation of cells in accordance with the invention is distinguished from transformation of cells by genetic engineering.
  • the invention provides for phenotypic transformation of cells without genetic transformation.
  • transformation in reference to cells is used to refer to the insertion or incorporation into the cell membrane of exogenously prepared synthetic molecule constructs thereby effecting qualitative and quantitative changes in the cell surface antigens expressed by the cell.
  • the synthetic molecule constructs of the invention comprise an antigen (F) linked to a lipid portion (or moiety) (L) via a spacer (S S 2 ).
  • the synthetic molecule constructs can be prepared by the condensation of a primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine derivative of the antigen with an activated lipid. Methods of preparing neoglycoconjugates have been reviewed (Bovin, N. Biochem. Soc. Symp., 69, 143-160).
  • a desired phenotypic transformation may be achieved using the synthetic molecule constructs
  • a desired phenotypic transformation may be achieved using the synthetic molecule constructs of the invention in a one step method or a two step method.
  • the water soluble synthetic molecule construct (F-SrS 2 -L) comprises the surface antigen as F.
  • the synthetic molecule construct (F-S1-S2-L) comprises an antigen (F) that serves as a functional group to which a surface antigen can be linked following insertion of the synthetic molecule construct into the membrane.
  • the functional group can be a group such as a lectin, avidin or biotin.
  • the synthetic molecule construct is acting as a synthetic membrane anchor.
  • the primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine and the activator of the lipid are selected to provide a synthetic molecule construct that is water soluble and will spontaneously and stably incorporate into a lipid bi-layer when a solution of the synthetic molecule construct is contacted with the lipid bi- layer.
  • water soluble means a stable, single phase system is formed when the synthetic molecule construct is contacted with water or saline (such as PBS) in the absence of organic solvents or detergents, and the term “solution” has a corresponding meaning.
  • stably incorporate means that the synthetic molecule constructs incorporate into the lipid bi-layer or membrane with minimal subsequent exchange between the lipid bi-layer or membrane and the external aqueous environment of the lipid bi-layer or membrane.
  • the selection of the primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine and the activator depends on the physico-chemical properties of the antigen (F) to be linked to the lipid (L).
  • Si is selected from: S2 is selected from:
  • the structure of the spacer for synthetic molecule constructs (F-SrS ⁇ -L) where F is a glycotope of the A-, B- and H-antigens of the ABO blood groups, may be the structure of the spacer selected to prepare synthetic molecule constructs of other antigens with physico- chemical properties similar to the glycotopes of the A-, B- and H-antigens of the ABO blood groups.
  • the glycotope of a broad range of blood group related glycolipids or glycoproteins could be the antigen (F) of the synthetic molecule construct F-S 1 -S2-L where S S -L is identical or equivalent to the corresponding portion of the synthetic molecule constructs designated Aw-sp-Ad-DOPE (I), A tri -spsp ⁇ -Ad-DOPE (II), Aw-sp-Ad-DSPE (III), B t ⁇ -sp-Ad-DOPE (VI), Hw-sp-Ad-DOPE (VII), H dr sp-Ad-DOPE (VIII), Gal ⁇ -sp-Ad-DOPE (IX), Fuc ⁇ 1-2Gal ⁇ 1- 3GlcNAc ⁇ 1-3Gal ⁇ 1-4GlcNAc-sp-Ad-DOPE (XII), and Fuc ⁇ 1-2Gal ⁇ 1-3(Fuc ⁇ 1-4)GlcNAc-sp- Ad-DOPE (XIII).
  • Glycolipids* (*ln general, for almost all examples of A-antigens the terminal A sugar GalNAc can be replaced with the B sugar Gal. Additionally, the lack of either the A or B determinant creates the equivalent H determinant.
  • A-7-2 (ALe y ) GalNAc ⁇ 1 ⁇ 3Gal ⁇ 1 ⁇ 4GlcNAc ⁇ 1 ⁇ 3Gal ⁇ 1 ⁇ 4Glc ⁇ 1 ⁇ 1Cer 2 3 t t Fuc ⁇ l F ⁇ c ⁇ 1
  • A-7-1 (ALe b ) GalNAc ⁇ 1 ⁇ 3Gal ⁇ 1 ⁇ 3GIcNAc ⁇ 1->3Gal ⁇ 1 ⁇ 4Glc ⁇ 1 ⁇ 1Cer 2 4 t t F ⁇ c ⁇ 1 Fuc ⁇ l
  • Sialyl Le a -6/gastrointestinal cancer antigen (GICA or Ca 19-9) NeuAc ⁇ 2 ⁇ 3Gal ⁇ 1 ⁇ 3GlcNAc ⁇ 1->3Gal ⁇ 1 ⁇ 4Glc ⁇ 1 ⁇ 1Cer 4 t F ⁇ c ⁇ l Disialoyl Le a -7
  • NeuAc ⁇ 2 t 6 GaI ⁇ 1->3GlcNAc ⁇ 1- 3Gal ⁇ 1 ⁇ 4Glc ⁇ 1 ⁇ 1Cer 3 4 t t NeuAc ⁇ 2 Fuc ⁇ l Le b -6 Gal ⁇ 1 ⁇ 3GlcNAc ⁇ 1 ⁇ 3Gal ⁇ 1 ⁇ 4Glc ⁇ 1->1Cer
  • Gal ⁇ 1 ⁇ 4GlcNAc ⁇ 1 6 Gal ⁇ 1-»4GlcNAc ⁇ 1 ⁇ 3Gal ⁇ 1 ⁇ 4Glc ⁇ 1 ⁇ 1Cei Gal ⁇ 1 ⁇ 4GlcNA ⁇ 1 3
  • Disialoyl group oligosaccharide NeuAc ⁇ 2 ⁇ 8NeuAc ⁇ 2 t 6 Ga I ⁇ 1 -»3Ga INAc ⁇ l ⁇ -S ⁇ r/Tfir 3 NeuAc ⁇ 2 ⁇ 8NeuAc ⁇ 2
  • GlcNAc oligosaccharide NeuAc 2 t 3 Ga I ⁇ 1 -»3Ga INAc ⁇ l ⁇ Ssr/T r I GaI ⁇ 1 ⁇ 4GlcNAc ⁇ 1 Mucin oligosaccharide/A-active glycoprotein Fuc ⁇ l T 2 Ga INAc ⁇ l ⁇ 3Gal ⁇ 1 ⁇ 3GaJNAc ⁇ 1 -»S3r/ " ⁇ hr i Gal ⁇ 1 ⁇ 4GlcNAc ⁇ 1 Ovarian cyst A-active glycoprotein-6a GaINAc ⁇ 1 ⁇ 3Gal ⁇ 1- 3GlcNAc ⁇ 1- ⁇ 3Gal ⁇ 1- 3GalNac ⁇ 1 ⁇ -&r ⁇ hr 2 t Fuc ⁇ l
  • Gl D-Gal
  • Gc D-Glc
  • GcN D-GlcNAc
  • M D-Man
  • F L-Fuc
  • NA NeuAc
  • the synthetic molecule constructs (F-S S 2 - L) of the invention where F is an oligosaccharide may be used as "synthetic glycolipids" and substituted for glycolipids obtained from biological (botanical or zoological) sources.
  • glycolipid means a lipid containing carbohydrate of amphipathic character including: glycosylated glycerolipids, such as glycosylated phosphoglycerides and glycosylglycerides; glycosylated sphingolipids (neutral glycolipids) such as glycosylceramides or cerebrosides; and gangliosides (acidic glycolipids).
  • glycosylated glycerolipids such as glycosylated phosphoglycerides and glycosylglycerides
  • glycosylated sphingolipids neutral glycolipids
  • glycosylceramides or cerebrosides such as glycosylceramides or cerebrosides
  • gangliosides acidic glycolipids
  • glycolipid-linked antigen means a lipid containing carbohydrate in which an antigen (e.g. a protein) is linked to the glycolipid via the carbohydrate portion of the molecule.
  • an antigen e.g. a protein
  • glycolipid-linked antigens include GPI- linked proteins.
  • glycolipid is itself an antigen.
  • glycolipid and glycolipid-linked antigen are used to distinguish between naturally occurring molecules where the antigen is the glycolipid and naturally occurring molecules where the antigen is linked to the glycolipid via the carbohydrate portion of the glycolipid.
  • synthetic molecule constructs of the invention could be described as both “synthetic glycolipids” and synthetic membrane anchors to the extent that the antigen may be the synthetic glycolipid perse or attached to the synthetic glycolipid.
  • carbohydrate portion of a glycolipid may be modified and linked to other antigens by the methods described in the specification accompanying the international application no. PCT/NZ2003/00059 (published as WO03087346).
  • glycotope is used to refer to the antigenic determinant located on the carbohydrate portion of a glycolipid.
  • the classification of glycolipid antigens in blood group serology is based on the structure of the carbohydrate portion of the glycolipid.
  • the terminal sugars of the glycotopes of A-antigens are GalNAc ⁇ 1-3(Fuc ⁇ 1-2)Gal ⁇
  • the terminal sugars of the glycotopes of the B-antigens are Gal ⁇ l -3(Fuc ⁇ 1 -2)Gal ⁇ .
  • the terminal three sugars of the carbohydrate portion of the naturally occurring A- or B-antigen are the determinant of the A and B blood groupings.
  • the terminal four or five sugars of the carbohydrate portion of the naturally occurring A-antigen are the determinant of the A blood sub-groupings A type 1 , A type 2, etc.
  • the RBCs incorporating the synthetic molecule constructs of the invention can be used to characterise and discriminate between blood typing reagents (antibodies) of differing specificity.
  • Water soluble synthetic molecule constructs of the invention that exclude a carbohydrate portion are contemplated by the inventors.
  • Antigens other than carbohydrates or oligosaccharides, but with similar physico-chemical properties, may be substituted for F in the "synthetic glycolipids" described.
  • Synthetic molecule constructs of the invention that comprise an antigen (F) with differing physico-chemical properties to those of carbohydrates or oligosaccharides are also contemplated by the inventors. Water soluble synthetic molecule constructs comprising these antigens may be prepared by selecting different spacers.
  • the synthetic molecule constructs overcome many of the limitations of using natural glycolipids in the practice of these inventions.
  • a particular advantage of the synthetic molecule constructs is their superior performance and ability to be used in the transformation of cells at reduced temperatures, e.g. 4°C.
  • the spacer will provide a synthetic molecule construct (F-SrS 2 -L) that is water soluble and spontaneously and stably incorporate in to a lipid bilayer such as a cell membrane.
  • the synthetic molecule constructs designated Aw-sp- lipid (IV) and Atri-PAA-DOPE (V) were determined not to be water soluble and/or unable to spontaneously and stably incorporate in to a lipid bilayer such as a cell membrane. designated Aw-sp-lipid (IV)
  • Figure 1 shows Diamed results of CellstabTM stored cells transformed by natural A glycolipid transformation solution at (L to R) 10 mg/mL, 5 mg/mL, 2 mg/mL, 2 mg/mL* and 1 mg/mL Antisera used are Albaclone (top) and Bioclone (bottom). (* - transformation solution (containing glycolipids) was not washed out after the incubation, it was left in over night and washed out the next day (day 2).)
  • Figure 2 shows Diamed results of CellstabTM stored cells transformed by natural B glycolipid transformation solution at (L to R) 10 mg/mL, 5 mg/mL, 2 mg/mL, 2 mg/mL* and 1 mg/mL. Antisera used are Albaclone (top) and Bioclone (bottom). (* - transformation solution (containing glycolipids) was not washed out after the incubation, it was left in over night and washed out the next day (day 2)).
  • Figure 3 shows FACS analysis following in vitro transformation of human Le(a-b-) red cells with natural Le b -6 glycolipid over time at three transformation temperatures, 37°C (top), 22°C (middle) and 4°C (bottom).
  • Figure 4 shows Diamed results of cells transformed at 4°C by Aw-sp-Ad-DOPE (I) transformation solution at (L to R): washed 0.08 mg/mL; unwashed 0.08 mg/mL; washed 0.05 mg/mL; unwashed 0.05 mg/mL; washed 0.03 mg/mL; and unwashed 0.03 mg/mL.
  • the antisera used was Bioclone anti-A.
  • Figure 5 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by Aw-sp-Ad-DOPE (I) transformation solution at (L to R): 0.08 mg/mL, 0.05 mg/mL and 0.03 mg/mL. The antisera used was Bioclone anti-A.
  • Figure 6 shows in the left column Diamed results of cells transformed at 4°C by B tri -sp-Ad- DOPE (VI) transformation solution at (L to R): washed 0.6 mg/mL; unwashed 0.6 mg/mL; washed 0.3 mg/mL; unwashed 0.3 mg/mL; washed 0.15 mg/mL; and unwashed 0.15 mg/mL; and in the right column Diamed results of cells transformed at 4°C by B ⁇ -sp-Ad-DOPE (VI) transformation solution at (L to R): washed 0.08 mg/mL; unwashed 0.08 mg/mL; washed 0.05 mg/mL; unwashed 0.05 mg/mL; washed 0.03 mg/mL; and unwashed 0.03 mg/mL.
  • the antisera used was Bioclone anti-B.
  • Figure 7 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by Bw-sp-Ad-DOPE (VI) transformation solution at (L to R): 0.6 mg/mL, 0.3 mg/mL and 0.15 mg/mL..
  • Figure 8 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI).
  • Wells 1 and 2 (L to R) contain washed A 0.07 + B 0.3 mg/mL against anti-A and anti-B.
  • Wells 3 and 4 contain unwashed A 0.07 + B 0.3 mg/mL against anti-A and anti-B.
  • Figure 9 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.07 + B 0.3 mg/mL against anti-A and anti-B.
  • Figure 10 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI).
  • Wells 1 and 2 (L to R) contain washed A 0.07 + B 0.2 mg/mL against anti-A and anti-B.
  • Wells 3 and 4 contain unwashed A 0.07 + B 0.2 mg/mL against anti-A and anti-B.
  • Figure 11 shows cells that were no longer washed prior to testing.
  • Wells 1 and 2 (L to R) contain unwashed A 0.07 + B 0.2 mg/mL against anti-A and anti-B
  • Figure 12 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and B, ⁇ -sp-Ad-DOPE (VI).
  • Wells 1 and 2 (L to R) contain washed A 0.06 + B 0.3 mg/mL against anti-A and anti-B.
  • Wells 3 and 4 contain unwashed A 0.06 + B 0.3 mg/mL against anti-A and anti-B.
  • Figure 13 shows cells that were no longer washed prior to testing.
  • Figure 14 shows Diamed results of cells transformed at 4°C by parallel transformation with A w - sp-Ad-DOPE (I) and B w -sp-Ad-DOPE (VI).
  • Wells 1 and 2 (L to R) contain washed A 0.06 + B 0.2 mg/mL against anti-A and anti-B.
  • Wells 3 and 4 contain unwashed A 0.06 + B 0.2 mg/mL against anti-A and anti-B.
  • Figure 15 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.06 + B 0.2 mg/mL against anti-A and anti-B.
  • Figure 16 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI).
  • Wells 1 and 2 (L to R) contain washed A 0.05 + B 0.3 mg/mL against anti-A and anti-B.
  • Wells 3 and 4 contain unwashed A 0.05 + B 0.3 mg/mL against anti-A and anti-B.
  • Figure 17 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with A t ⁇ -sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.05 + B 0.3 mg/mL against anti-A and anti-B.
  • Figure 18 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI).
  • Wells 1 and 2 (L to R) contain washed A 0.05 + B 0.2 mg/mL against anti-A and anti-B.
  • Wells 3 and 4 contain unwashed A 0.05 + B 0.2 mg/mL against anti-A and anti-B.
  • Figure 19 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.05 + B 0.2 mg/mL against anti-A and anti-B. COMPARATIVE EXAMPLES
  • the Comparative Examples do not form part of the invention claimed.
  • the Comparative Examples describe red blood cell transformation with natural glycolipids.
  • Glycolipids were separated on silica gel with a mobile phase of increasing polarity.
  • the program was a linear gradient beginning with 100% chloroform-methanol-water 80:20:1 (v/v) and ending with 100% chloroform-methanol-water 40:40: 12 (v/v).
  • the HPLC equipment used was a Shimadzu system capable of pumping and mixing four separate solvents at programmed ratios. As chloroform, methanol and water evaporate at different rates, a program was developed whereby the solvent components were not mixed prior to entering the HPLC.
  • the Shimadzu HPLC mixes four different liquids by taking a "shot” from each of four bottles in turn. "Shots" of chloroform and water directly next to each other in the lines may cause miscibility problems. Methanol was sandwiched in between these two immiscible components. Additionally, the water was pre-mixed with methanol in a 1:1 ratio to further prevent problems with miscibility.
  • Transformation of red blood cells was assessed by agglutination using the Diamed-ID Micro Typing System in addition to using conventional tube serology. Diamed ABO typing cards were not used. The cards used were NaCl, Enzyme test and cold agglutinin cards, which were not pre-loaded with any antisera or other reagents. This allowed the use of specific antisera with both methodologies.
  • Diamed NaCl, Enzyme test and cold agglutinin cards A comparative trial was carried out between tube serology and the Diamed system to establish the performance of the two systems. Cells were transformed at 25°C for 4 hours. Seraclone and Alba-clone anti-A sera were used to gauge equivalency. The results are shown in Table 3 below.
  • the Diamed system proved to be more sensitive to the weaker reactions than tube serology with the Seraclone anti-A, but not with Albaclone.
  • These reagents are formulated differently, and are thus not expected to perform identically.
  • the fact that the Seraclone anti-A tube serology combination did not detect positivity is probably due to operator interpretation.
  • the weaker reactions are notoriously difficult to accurately score, and the difference between 1+ and 0 can be difficult to discern in tubes.
  • the A glycolipid sample contained other lipid impurities and thus comparatively less blood group A molecules by weight than the Le b glycolipid sample of equivalent concentration (w/v). This seems to be borne out by the fact that higher concentrations of the A glycolipid than the Le b glycolipid were required to produce equivalent agglutination scores (see Table 6).
  • the level of impurity in the A glycolipid sample may also have contributed to the lower stability over the 62 day period - the A-transformed cells 'died' at the highest concentration (having received the largest dose of impurity).
  • Table 7 Haemolysis as assessed visually. Day 1 - in the supernatant of the first wash after transformation; Days 25 and 62 - in the cell preservative solution before the cells are resuspended after storage. Scoring scale is analogous to the 4+ to 0 agglutination scale: hhhh - severely haemolysed, hhh - very haemolysed, hh - moderately haemolysed, h - mildly haemolysed, w - faintly haemolysed and 0 - no haemolysis seen.
  • the Le b sample was highly purified - before being dissolved, it was a powder of pure white colour, and thus it is unlikely that the haemolysis was due to the deleterious effect of impurities. It is clear to see that at 62 days, the amount of haemolysis occurring diminishes in line with the decrease in the glycolipid concentration.
  • Incubation Duration Incubation at 37°C was carried out for 1 and 2 hours and its effect on cell health and transformation assessed by agglutination with the relevant antibody.
  • Anti-B Expt B glycolipid 10 5 2 1 0.5 0.1 0.01 0.001 0
  • Two sets of cells were transformed with different concentrations of natural A glycolipid. Transformation was performed at 25°C. One set of cells was tested long term, and one set of cells was tested weekly for agglutination. The agglutination results from tube serology and Diamed are shown in Table 16 below. All cells were stored in CellstabTM in bottles with flat bases. The cells showed minimal to no haemolysis at any time.
  • CelpresolTM CSL
  • CellstabTM CellstabTM
  • a and B antisera from two different sources were used in serology testing.
  • Diamed gel-card testing was carried out to day 56 for the Alsevers stored cells, and discontinued at day 63 due to fungal contamination (although still returning positive scores).
  • the CellstabTM stored cells continued to be tested up to day 70, and were still viable at this point (see Figure 1 for A results and Figure 2 for B results).
  • Reactivity was determined by FACS analysis using a Gamma anti-Leb. (The serological detection level is around 10 2 molecules. The insertion of natural glycolipids at 4°C for 8 hours was not detectable by agglutination with antibodies.) Projection of the rate of insertion curve from FACS analysis did not indicate that the rate of insertion at 4°C would have reached agglutination detection levels within 24 hours.
  • the rate of transformation is slow for both natural A glycolipid and natural B glycolipid as demonstrated by the negative agglutination scores after 1 hour at 2°C. Considerable insertion at 37°C for this time interval has been demonstrated.
  • Natural A glycolipid insertion at 2 C C required 48 hours to reach the same level of insertion obtainable by transformation at 37°C. After this time further insertion was not observed. Likewise, natural B glycolipid insertion at 2°C was not as rapid as transformation at 37°C. The agglutination scores did not improve upon continued incubation and thus seemed to have reached maximal insertion at this time point for these concentrations.
  • TLC analysis was performed on silica gel 60 F 254 plates (Merck), the compounds were detected by staining with 8% of phosphoric acid in water followed by heating at over 200°C.
  • Column chromatography was carried out on silica gel 60 (0.2-0.063mm, Merck) or Sephadex LH-20 (Amersham).
  • 1 H NMR spectra were acquired on a Bruker DRX-500 spectrometer. Chemical shifts are given in ppm ( ⁇ ) relative to CD 3 OD.
  • the Sug may be either the aminopropyi glycoside (F-SrNH 2 ) of either GalNAc ⁇ 1-3(Fuc ⁇ 1-2)Gal ⁇ trisaccharide (A-glycotope) (F) or Gal ⁇ 1-3(Fuc ⁇ 1-2)Gal ⁇ trisaccharide (B-glycotope) (F).
  • the synthetic glycolipid must also be able to insert into the membrane and be recognisable to the appropriate antibody for transformation to be detected by agglutination. Initial tests on the molecules were to establish solubility and thus eliminate those molecules that were unsuitable for use in the transformation of cells.
  • DOPE Lipid Tails Aw-sp-Ad-DOPE (I) Htn-sp-Ad-DOPE (VII) At ⁇ -spsp ⁇ -Ad-DOPE (II) Bt ⁇ -PAA-DOPE (V)
  • Aw-sp-lipid (IV) has a single rather than a diacyl tail and it was proposed that there was no insertion of this synthetic molecule into the membrane bilayer.
  • the low rate of insertion of the natural glycolipids may be due to the physicochemical properties of the natural glycolipid tail; a sphingolipid and a fatty acid.
  • the diacyl tail of the glycolipid may be important in determining the rate of insertion. Certain diacyl tails may retain greater fluidity at lower temperatures. Alternatively, the domain of the plasma membrane into which the diacyl tail of these glycolipids inserts may retain this greater fluidity.
  • Molecule Transformation solution ( ⁇ -g/mL) sera 1000 500 250 125 100 60 50 40 30 20 10
  • Aw-sp-Ad-DOPE (1) Alba w+ w+ 0 0 0 Bio 2+ 1 + w+ 0 0 2- Alba 4+ 3+ 2+ 3+ Bio 4+* 4+* 3+* 3+ DBA 0
  • Aw-sp-Ad-DSPE (III) Alba 0 0 0 0 0 0 Bio 0 0 0 0 2- Alba 2-3+ 2+ 2+ 3+ Bio 3+ 2-3+ 2+ 2+ DBA 0 * - splatter.
  • CelpresolTM was added to the cells so that the final cells:non-cells ratio was 3:5 (v/v). The cells continued to be tested at intervals. Testing was discontinued after 10 days because cells turned brown.
  • This discolouration could be attributed to a number of factors including: cells were already 21 days old when transformed; 48 hour transformation was in PBS not CelpresolTM so cells stressed for this time; and cells may have been mishandled in transit between the transforming and testing laboratories. This may be mitigated by transformation of the cells in CelpresolTM as opposed to PBS.
  • the post-transformation supernatant solutions (from Aw-sp-Ad-DOPE (I) at 0.08 mg/mL, 0.05 mg/mL and 0.03 mg/mL, and Bw-sp-Ad-DOPE (VI) at 0.6 mg/mL, 20 ⁇ L) were added neat and in a 1:2 dilution to washed, packed RBCs (60 ⁇ L). The tubes were incubated in a 37°C waterbath for one hour, with mixing taking place every 15 minutes.
  • the transformed RBCs were washed 3x with PBS and then suspended in CellstabTM at the appropriate concentration for serology testing.
  • Tube serology Pre-trans cone (mg/mL) Score Aw-sp-Ad-DOPE (I) at 0.08 0 1 :2 ofAt ⁇ -sp-Ad-DOPE (l) 0 at 0.08 Aw-sp-Ad-DOPE (I) at 0.05 0 1 :2 ofAtr,-sp-Ad-DOPE (l) 0 at 0.05 Atrrsp-Ad-DOPE (I) at 0.03 0 1:2 ofAt ⁇ -sp-Ad-DOPE (l) 0 at 0.03 Bw-sp-Ad-DOPE (VI) at vw+ 0.60 (VI) at 0.60
  • post-transformation solutions were concentrated 20x and compared in parallel with the transformation solutions of known concentration. Only the post-transformation solutions derived from the 0.08 mg/mL Aw-sp-Ad-DOPE (I) and 0.6 mg/mL B lri -sp-Ad-DOPE (VI) solutions were tested.
  • Post-transformation solutions (20 ⁇ L) were dialysed (pore size 500Da) against de-ionised water for 2 days. The samples were left to dry in a fumehood for 10 days. At the end of this time they were transferred into a rotavapor flask and set on the rotavapor to rotate under vacuum with no heat overnight. Samples were dried in a water bath at 40°C and washed over into smaller vessels with chloroform-methanol 2:1 leaving significant amounts of dried cellular material. The chloroform- methanol 2:1 washings were dried down, washed over again into test-tubes with chloroform- methanol 2:1 and dried down. These samples were redissolved in 1 mL of 1 x PBS and used for transformation experiments. The cellular material in the bottom of the flasks was washed out with water into another set of tubes.
  • the post-transformation solutions (from Aw-sp-Ad-DOPE (I) at 0.08 mg/mL and Bw-sp-Ad- DOPE (VI) at 0.6 mg/mL, 20 ⁇ L) were added to washed, packed RBCs (60 ⁇ L).
  • the transformation solutions (Aw-sp-Ad-DOPE (I) at 0.08 mg/mL, 0.05 mg/mL and 0.03 mg/mL, and Bw-sp-Ad-DOPE (VI) at 0.6 mg/mL, 20 ⁇ L) were added to washed, packed RBCs (60 ⁇ L).
  • the tubes were incubated in a 37°C waterbath for one hour, with mixing taking place every 15 minutes.
  • the transformed RBCs were washed 3x with PBS and then suspended in CellstabTM at the appropriate concentration for serology testing.
  • Diamed serology cone Score Aw-sp-Ad-DOPE (1) at 3+ 0.08 Aw-sp-Ad-DOPE (1) at 2+ 0.05 Aw-sp-Ad-DOPE (1) at 1 + 0.03 From Aw-sp-Ad- 0 DOPE (1) at 0.08 Bw-sp-Ad-DOPE (VI) 4+ at 0.60 From Btn-sp-Ad- 0 DOPE (VI) at 0.60
  • Example 8 RBC transformation with A- and B-antigen synthetic glycolipids with different non-carbohydrate structures
  • the water soluble synthetic glycolipids designated Aw-sp-Ad-DOPE (I), Aw-spisp 2 -Ad-DOPE (II), Aw-sp-Ad-DSPE (III), and Bw-sp-Ad-DOPE (VI) were prepared according to the method described in Example 1 with necessary modifications.
  • Washed packed group O red blood cells (3 parts by volume) and the synthetic glycolipid solution (1 part by volume, varying concentrations) were added to an eppendorf tube. The tube was incubated in a 37°C waterbath for one hour, mixing every 15 minutes. The transformed RBCs were washed 3x with PBS and then suspended in CellstabTM at the appropriate concentration for serology testing. Tube serology and Diamed gel-card results for RBCs transformed with the different synthetic molecule constructs are provided in Table 38. Results for the stability of the RBCs transformed with the different synthetic glycolipids at different concentrations are provided in Tables 39 to 44.
  • Hw-sp-Ad-DOPE VII
  • H d rsp-Ad-DOPE VIII
  • Gal ⁇ -sp-Ad-DOPE IX
  • Washed packed mouse RBCs (3 parts by volume) and the synthetic glycolipid solutions (1 part by volume of varying concentrations) were added to an eppendorf tube. The tube was incubated in a 37°C waterbath for one hour, mixing every 15 minutes. The transformed RBCs were washed 3x with PBS and then suspended in CellstabTM at the appropriate concentration for serology testing.
  • Tube serology and Diamed gel-card results for RBCs transformed with the different synthetic glycolipids are presented in Table 46.
  • the results show that three sugars (Hw) are required for detection by anti-H IgM, at least by the reagent used.
  • the water soluble synthetic glycolipids designated H d i-sp-Ad-DOPE (VIII) and Gal ⁇ -sp-Ad- DOPE (IX) were prepared according to the method described in Example 1 with necessary modifications.
  • Murine RBCs were washed 3x in 1x PBS.
  • 30 ⁇ l of packed RBCs were combined with 30 ⁇ l of H d i-sp-Ad-DOPE (VIII), and 30 ⁇ l of packed RBCs were combined with 30 ⁇ l Gal ⁇ -sp-Ad-DOPE (IX), respectively.
  • Both synthetic molecule constructs were at a concentration of 1.0 mg/ml.
  • 30 ⁇ l of 1x PBS was added to 30 ⁇ l of packed RBCs to act as the control group.
  • Cells were incubated for 90 minutes in a 37°C shaking water-bath.
  • RBCs were washed 3x in 1x PBS.
  • the synthetic glycolipids of the invention may be used in the preparation of "sensitivity controls” (also referred to as “quality control cells”, “serology controls”, or “process controls”) as described in the specification accompanying international application no. PCT/NZ02/00214 (WO 03/034074).
  • the synthetic glycolipids provide the advantage that the transformation of the RBCs may be achieved at reduced temperatures.
  • Glycolipids are manufactured in a white dry powder. Glycolipids in this form (enclosed in a sealed container under a controlled temperature) are stable for an indefinite period of time. The glycolipids are suspended in solution (e.g. CelpresolTM) by weight in order to formulate the transformation solutions.
  • solution e.g. CelpresolTM
  • transformation solutions are received at CSL, they are filtered (through a MILLEX®- GV 0.22 ⁇ filter unit) under aseptic conditions.
  • RBC donations are processed using a continuous flow centrifuge washer under aseptic conditions. RBC donations are washed in buffered saline followed by CelpresolTM solution. The PCV of the RBC donations is measured on a Beckman Coulter AcT Diff analyser. The donations are then adjusted to a packed cell volume (PCV) of 50% with the addition of CelpresolTM.
  • PCV packed cell volume
  • RBCs are washed in buffered saline and CelpresolTM.
  • the cells are suspended in CelpresolTM solution to a PCV of > 50%.
  • the PCV of red cells is measured using a Beckman Coulter AcT Diff.
  • the mass of the red cell solution is weighed.
  • red cell sample Incubate the red cell sample for 3 hours at 2-8°C under controlled temperature conditions and constant gentle agitation for 18 hours. At the end of the 3 hour period, aseptically remove a sample of red cells and test the sample to confirm transformation of the red cells. Perform blood grouping using tube, tile and CAT techniques.
  • Formulation and dispensing Aseptically combine a volume of the transformed RBCs with a volume of simulated plasma diluent (SPD).
  • the plasma may contain monoclonal and polyclonal antibodies. Antibodies are selected according to the desired characteristics of the sensitivity controls.
  • the plasma may additionally contain tartrazine and bovine serum albumin.
  • Blood grouping and antibody screening is performed on the bulk samples using tube, tile and CAT techniques.
  • the transformed RBC-SPD blend is then aseptically dispensed into BD Vacutainer tubes and the tubes labelled accordingly.
  • the ability to effect qualitative and quantitative differences in the cell surface antigens expressed by cell types other than RBCs was investigated.
  • the ability to enhance the adhesion of embryos to endometrial cells was adopted as a model system.
  • the synthetic molecules may be used as synthetic membrane anchors and/or synthetic molecule constructs. Therefore, they may also be employed in the method of enhancing embryo implantation as described in international patent application no PCT/NZ2003/000059 (published as WO 03/087346) which is incorporated by reference.
  • Micro-centrifuge tubes each containing a 50 ⁇ l solution of 5M/ml endometrial cells were prepared.
  • 50 ⁇ l of synthetic glycolipids Aw-sp-Ad- DOPE (I) or Bw-sp-Ad-DOPE A (VI), or 50 ⁇ l M2 were added to the control cells.
  • the cells were incubated for 90 minutes at 37°C on a mixer.
  • the endometrial cells were washed 3x by resuspending in CMF HBSS media and centrifuging at 2000 rpm for 3 minutes.
  • the washed cell preparation was resuspended in 50 ⁇ l of M2.
  • Embryo Modification Insertion of water soluble synthetic molecule construct The embryo zona pellucida was removed by treating embryos with 0.5% pronase in a 37°C oven for 6 minutes or until all zonas were removed. Micro-drops were prepared by adding 5 ⁇ l of synthetic glycolipid Aw-sp-Ad-DOPE (i) or Bw-sp-Ad-DOPE (VI), at a concentration of 1 mg/mL to a 45 ⁇ l drop of M2 media overlaid with mineral oil. All embryo groups were incubated in the 50 ⁇ l micro-drops for 1 hour at 37°C. Embryos from experimental and control groups were washed 3x with M2 media.
  • Embryos from experimental and control groups were placed into a micro-drop of corresponding antibody and incubated for 30 min at 37°C. Embryos from experimental and control groups were washed 3x with M2 media.
  • Embryos from all experimental and control groups were placed into micro-drops of anti-mouse Ig FITC (1 :50 dilution anti-mouse Ig FITC in M2) and incubated for 30 min at 37°C. Embryos from experimental and control groups were washed 3x with M2 media. Embryos were mounted on microscope slides in a 5 ⁇ l drop of M2 and the drops overlaid with oil.
  • Two concave glass slides were prepared, one with two wells of synthetic glycolipid Aw-sp-Ad- DOPE (I) inserted endometrial cells and the other with two wells of synthetic glycolipid Bw-sp- Ad-DOPE (VI) inserted endometrial cells.
  • the embryos were surrounded with endometrial cells.
  • the wells were covered with mineral oil and incubated for 15 minutes at 37°C.
  • each group of embryos were carefully transferred to a fresh drop of M2 media.
  • the embryos were gently washed.
  • the embryos were gently transferred into 2 ⁇ L of M2 media on a marked microscope slide. Each drop was overlaid with mineral oil
  • Kannagi R Nudelman E, Levery SB, & Hakomori SI. (1982) A series of human erythrocytes glycosphingolipids reacting to the monoclonal antibody directed to a developmentally regulated antigen, SSEA-1. J. Biol. Chem. 257: 14865-14874.
  • a monoclonal antibody-defined antigen associated with gastrointestinal cancer is a ganglioside containing sialylated lacto-N-fucopentaose II. J. Biol. Chem. 257: 14365-14369. Nudelman E, Fukushi Y, Levery SB, Higuchi T & Hakomori SI.
  • Novel fucolipids of human adenocarcinoma disialoyl Le a antigen (IH 4 Fuclll 6 NeuAclV 3 NeuAcLc 4 ) of human colonic adenocarcinoma and the monoclonal antibody (FH7) defining this structure. J. Biol. Chem. 261: 5487-5495.
  • Tanaka M Dube VE & Anderson B. (1984) Structures of oligosaccharides cleaved by base- borohydride from an I, H, and Le a active ovarian cyst glycoprotein. Biochim. Biophys. Acta. 798: 283-290.

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Abstract

The invention relates to synthetic molecules that spontaneously and stably incorporate into lipid by-layers, including cell membranes. Particularly, although not exclusively, the invention relates to the use of these molecules as synthetic membrane anchors or synthetic molecule constructs to effect qualitative and quantitative changes in the expression of cell surface antigens.

Description

SYNTHETIC MEMBRANE ANCHORS
FIELD OF INVENTION The invention relates to synthetic molecules that spontaneously and stably incorporate into lipid bi-layers, including cell membranes. Particularly, although not exclusively, the invention relates to the use of these molecules as synthetic membrane anchors or synthetic molecule constructs to effect qualitative and quantitative changes in the expression of cell surface antigens.
BACKGROUND
Cell surface antigens mediate a range of interactions between cells and their environment. These interactions include cell-cell interactions, cell-surface interactions and cell-solute interactions. Cell surface antigens also mediate intra-cellular signalling.
Cells are characterised by qualitative and quantitative differences in the cell surface antigens expressed. Qualitative and quantitative changes in the cell surface antigens expressed alter both cell function (mode of action) and cell functionality (action served).
Being able to effect qualitative and/or quantitative changes in the surface antigens expressed by a cell has diagnostic and therapeutic value. Transgenic and non-transgenic methods of effecting qualitative and/or quantitative changes in the surface antigens expressed by a cell are known.
Protein painting is a non-transgenic method for effecting qualitative and/or quantitative changes in the surface antigens expressed by a cell. The method exploits the ability of GPI linked proteins to spontaneously anchor to the cell membrane via their lipid tails. The method described in the specification accompanying international application no. PCT/US98/15124 (WO 99/05255) includes the step of inserting a GPI linked protein isolated from a biological source into a membrane. Isolated GPI-anchored proteins are stated as having an unusual capacity to reintegrate with a cell-surface membrane.
Cells exist in an aqueous environment. The cell membrane is a lipid bilayer that serves as a semi-permeable barrier between the cytoplasm of the cell and this aqueous environment. Localising antigens to the cell surface may also be achieved by the use of glycolipids as membrane anchors.
The method described in the specification accompanying international application no. PCT/NZ02/00214 (WO 03/034074) includes the step of inserting a controlled amount of glycolipid into a membrane. The amount of glycolipid inserted is controlled to provide cells with a desired level of antigen expression.
The method described in the specification accompanying international application no. PCT/NZ03/00059 (WO 03/087346) includes the step of inserting a modified glycolipid into a membrane as a "membrane anchor". The modified glycolipid provides for the localisation of antigens to the surface of the cell or multicellular structure. New characteristics may thereby be imparted on the cell or multicellular structure.
These methods typically include the isolation of a glycolipid or glycolipid-linked antigen from a biological source. The isolation of glycolipids or glycolipid-linked antigens from biological sources is costly, variable and isolatable amounts are often limited. Obtaining reagents from zoological sources for therapeutic use is particularly problematic, especially where the reagent or its derivative products are to be administered to a human subject. Synthetic molecules for which the risk of contamination with zoo-pathogenic agents can be excluded are preferred. Synthetic counterparts for naturally occurring glycolipids and synthetic neo-glycolipids have been reported. However, for a synthetic glycolipid to be of use as a membrane anchor it must be able to spontaneously and stably incorporate into a lipid bi-layer from an aqueous environment. The utility of synthetic glycolipids in diagnostic or therapeutic applications is further limited to those synthetic glycolipids that will form a solution in saline.
Organic solvents and/or detergents used to facilitate the solubilization of glycolipids in saline must be biocompatible. Solvents and detergents must often be excluded or quickly removed as they can be damaging to some cell membranes. The removal of solvents or detergents from such preparations can be problematic.
Damage to cell membranes is to be avoided especially where the supply of cells or multicellular structures is limited, e.g. embryos, or the cells are particularly sensitive to perturbation, e.g. hepatocytes.
There exists a need for water soluble synthetic molecules that are functionally equivalent to naturally occurring glycolipids and glycolipid-linked antigens in respect of their ability to spontaneously and stably incorporate into lipid bi-layers, including cell membranes.
Providing such synthetic molecules would obviate the limitations of glycolipids and glycolipid- linked antigens isolated from biological sources and facilitate being able to effect qualitative and/or quantitative changes in the surface antigens expressed by a cell.
It is an object of this invention to provide such synthetic molecules and a method for their preparation. It is a further object of this invention to provide synthetic molecules for use in diagnostic and therapeutic applications. The preceding objects are to be read disjunctively with the object to at least provide the public with a useful choice.
STATEMENTS OF INVENTION In a first aspect the invention consists in a molecule of the structure R-S2-L for use as a synthetic membrane anchor or in the preparation of synthetic molecule constructs where:
R is a chemically reactive functional group; S2 is a spacer linking R to L; and L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyl-lipids, including ceramide.
Preferably R is selected from the group including: 6/s(N-hydroxysuccinimidyl), bis(4- nitrophenyl), 6/s(pentafluorophenyl), £>/s(pentachlorophenyl).
Preferably S2 is selected from the group including: -CO(CH2)3CO-, -CO(CH2)4CO- (adipate (Ad)), and -CO(CH2)5CO-. Preferably R and S are ester linked.
Preferably L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids. More preferably L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of trans-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7- hexadecenoic acid, c/s-9-hexadeceπoic acid, c/s-6-octadecenoic acid, cs-9-octadecenoic acid, trans-9-octadecenoic acid, traπs-11-octadecenoic acid, c/s-11-octadecenoic acid, c/s-11- eicosenoic acid or c/s-13-docsenoic acid. More preferably the lipid is derived from one or more c/s-destaurated fatty acids. Most preferably L is selected from the group consisting of: 1,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-0-distearyl-sn-glycero-3- phosphatidylethanolamine (DSPE) and rac-1 ,2-dioleoyIglycerol (DOG).
Preferably L is a glycerophospholipid and the molecule includes the substructure:
Figure imgf000004_0001
where n = 3 to 5 and * is other than H. Preferably n is 3. In specific embodiments the molecule has the structure:
Figure imgf000005_0001
designated Ad-DOPE; the structure:
Figure imgf000005_0002
designated sp Ad-DOPE; or the structure:
Figure imgf000005_0003
designated Ad-DSPE.
M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
In a second aspect the invention consists in a synthetic molecule construct of the structure F- S1-S2-L where:
F is an antigen selected from the group consisting of carbohydrates, proteins, lipids, lectins, avidins and biotin; SrS2 is a spacer linking F to L; and L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyl-lipids, including ceramide.
Preferably the molecule is water soluble.
Preferably the molecule spontaneously incorporates into a lipid bi-layer when a solution of the molecule is contacted with the lipid bi-layer. More preferably the molecule stably incorporates into the lipid bilayer. Preferably F, Si, S2 and L are covalently linked.
Preferably F is selected from the group consisting of naturally occurring or synthetic glycotopes, antibodies (immunoglobulins), lectins, avidins, and biotin. Most preferably F is selected from the group consisting of naturally occurring or synthetic glycotopes or antibodies (immunoglobulins).
Preferably L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids. More preferably L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of fra/7S-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7- hexadecenoic acid, c/s-9-hexadecenoic acid, c/s-6-octadecenoic acid, c/s-9-octadecenoic acid, fra/7s-9-octadecenoic acid, trans 1 -octadecenoic acid, c/s-11 -octadecenoic acid, c/s-11 - eicosenoic acid or c/s-13-docsenoic acid. More preferably the lipid is derived from one or more c/s-destaurated fatty acids. Most preferably L is selected from the group consisting of: 1 ,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-0-distearyl-sn-glycero-3- phosphatidylethanolamine (DSPE) and rac-1 ,2-dioleoylglycerol (DOG).
Preferably L is a glycerophospholipid and the molecule includes the substructure:
Figure imgf000006_0001
where n = 3 to 5, X is H or C, and * is other than H. Preferably n is 3.
Sι-S2 is selected to provide a water soluble synthetic molecule construct.
In a first embodiment F is a naturally occurring or synthetic glycotope. Preferably F is a naturally occurring or synthetic glycotope consisting of three (trisaccharide) or more sugar units. More preferably F is a glycotope selected from the group consisting of lacto-neo- tetraosyl, lactotetraosyl, lacto-nor-hexaosyl, lacto-iso-octaosyl, globoteraosyl, globo-neo- tetraosyl, globopentaosyl, gangliotetraosyl, gangliotriaosyl, gangliopentaosyl, isoglobotriaosyl, isoglobotetraosyl, mucotriaosyl and mucotetraosyl series of oligosaccharides. Most preferably F is selected from the group of glycotopes comprising the terminal sugars GalNAcα1-3(Fucα1- 2)Galβ; Galα1-3Galβ; Galβ; Galα1-3(Fucα1-2)Galβ; NeuAcα2-3Galβ; NeuAcα2-6GaIβ; Fucαl- 2Ga|β; Galβ1-4GlcNAcβ1-6(Galβ1-4GlcNAcβ1-3)Galβ; Fucα1-2Galβ1-4GlcNAcβ1-6(Fucα1- 2Galβ1-4GlcNAcβ1-3)Galβ; Fucα1-2Galβ1-4GlcNAcβ1-6(NeuAcα2-3Galβ1-4GlcNAcβ1- 3)Galβ; NeuAcα2-3Galβ1 -4GIcNAcβ1 -6(NeuAcα2-3Galβ1 -4GlcNAcβ1 -3)Galβ; Galcrt -4GalB1 - 4Glc; GalNAcβ1-3Galα1-4Ga|β1-4Glc; GalNAcα1-3GalNAcβ1-3Galα1-4Galβ1-4Glc; or GalNAcβ 1 -3GalNAcβ1 -3Galα1 -4Galβ 1 -4Glc.
When F is a glycotope, L is a glycerophospholipid and S2 is selected from the group including: -CO(CH2) CO-, -CO(CH2)4CO- (adipate), -CO(CH2)5CO- and -CO(CH2)5NHCO(CH2)5CO-, preferably Si is a C3.5-aminoalkyl selected from the group consisting of: 3-aminopropyl, 4- aminobutyl, or 5-aminopentyl. More preferably Si is 3-aminopropyl.
In a second embodiment F is a molecule that mediates a cell-cell or cell-surface interaction. Preferably F is carbohydrate, protein or lipid with an affinity for a component expressed on a targeted cell or surface. More preferably F has an affinity for a component expressed on epithelial cells or extra-cellular matrices. Yet more preferably F has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium. Most preferably the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
In a third embodiment F is a molecule that mediates a cell-solute interaction. Preferably F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition. More preferably F is a ligand for an antibody (immunoglobulin).
In specific embodiments the water soluble synthetic molecule construct has the structure:
Figure imgf000007_0001
designated Aw-sp-Ad-DOPE (I); the structure:
Figure imgf000008_0001
designated Atri-spsp Ad-DOPE (II); the structure:
Figure imgf000008_0002
designated Aw-sp-Ad-DSPE (III); the structure
Figure imgf000008_0003
designated Btrι-sp-Ad-DOPE (VI); the structure:
Figure imgf000009_0001
designated Hm-sp-Ad-DOPE (VII); the structure:
Figure imgf000009_0002
designated Hdi-sp-Ad-DOPE (VIII); the structure:
Figure imgf000009_0003
designated Galβrsp-Ad-DOPE (IX); the structure:
Figure imgf000009_0004
designated Fucα1-2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); or the structure:
Figure imgf000010_0001
designated Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII). M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
In a third aspect the invention consists in a method of preparing a synthetic molecule construct of the structure F-S1-S2-L including the steps:
1. Reacting an activator (A) with a lipid (L) to provide an activated lipid (A-L); 2. Derivatising an antigen (F) to provide a derivatised antigen (F-Si); and 3. Condensing A-L with F-S-i to provide the molecule;
where:
A is an activator selected from the group including: b/s(N-hydroxysuccinimidyl), b/s(4- nitrophenyl), ή/s(pentafluorophenyl), 6/s(pentachlorophenyl) esters of carbodioic acids (C3 to C7); L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyi-lipids, including ceramide. F is an antigen selected from the group consisting of carbohydrates, proteins, lipids, lectins, avidins and biotin; and S S2 is a spacer linking F to L where Si is selected from the group including: primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine; and S2 is absent or selected from the group including: -CO(CH2)3CO-, -CO(CH2)4CO- (adipate), and -CO(CH2)5CO-.
Preferably the molecule is water soluble.
Preferably the molecule spontaneously incorporates into a lipid bi-layer when a solution of the molecule is contacted with the lipid bi-layer. More preferably the molecule stably incorporates into the lipid bilayer. Preferably F, Si, S2 and L are covalently linked.
Preferably F is selected from the group consisting of naturally occurring or synthetic glycotopes, antibodies (immunoglobulins), lectins, avidins, and biotin. Most preferably F is selected from the group consisting of naturally occurring or synthetic glycotopes or antibodies (immunoglobulins).
Preferably L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids. More preferably L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of fraπs-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7- hexadecenoic acid, c/s-9-hexadecenoic acid, c/s-6-octadecenoic acid, c/s-9-octadecenoic acid, fra 7s-9-octadecenoic acid, fraπs-11 -octadecenoic acid, c/s-11 -octadecenoic acid, c/s-11 - eicosenoic acid or c/s-13-docsenoic acid. More preferably the lipid is derived from one or more c/s-destaurated fatty acids. Most preferably L is selected from the group consisting of: 1 ,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-0-distearyl-sn-glycero-3- phosphatidylethanolamine (DSPE) and rac-1,2-dioleoylglycerol (DOG).
Preferably L is a glycerophospholipid and the molecule includes the substructure:
Figure imgf000011_0001
where n = 3 to 5, X is H or C, and * is other than H. Preferably n is 3.
Preferably A (R-S2) and Si are selected to provide a water soluble synthetic molecule construct.
In a first embodiment F is a naturally occurring or synthetic glycotope. Preferably F is a naturally occurring or synthetic glycotope consisting of three (trisaccharide) or more sugar units. More preferably F is a glycotope selected from the group consisting of lacto-neo- tetraosyl, lactotetraosyl, lacto-nor-hexaosyl, lacto-iso-octaosyl, globoteraosyl, globo-neo- tetraosyl, globopentaosyl, gangliotetraosyl, gangliotriaosyl, gangliopentaosyl, isoglobotriaosyl, isoglobotetraosyl, mucotriaosyl and mucotetraosyl series of oligosaccharides. Most preferably F is selected from the group of glycotopes comprising the terminal sugars GalNAcα1-3(Fucα1- 2)Galβ; Galα1-3Galβ; Galβ; Galα1-3(Fucα1-2)Galβ; NeuAcα2-3Galβ; NeuAcα2-6Galβ; Fuccrt- 2Galβ; Galβl -4GlcNAcβ1 -6(Galβ1 -4GlcNAcβ1 -3)Galβ; Fucαl -2Galβ1 -4GlcNAcβ1 -6(Fucα1 - 2Galβ1-4GlcNAcβ1-3)Galβ; Fucα1-2Galβ1-4GlcNAcβ1-6(NeuAcα2-3Galβ1-4GlcNAcβ1- 3)Galβ; NeuAcα2-3Galβ1-4GlcNAcβ1-6(NeuAcα2-3Galβ1-4GlcNAcβ1-3)Galβ; Galα1-4Ga|β1- 4Glc; GalNAcβ1-3Galα1-4Galβ1-4Glc; GalNAcα1-3GalNAcβ1-3Galα1-4Galβ1-4Glc; or GalNAcβ1-3GalNAcβ1-3Galα1-4Galβ1-4Glc. When F is a glycotope, L is a glycerophospholipid and S2 is selected from the group including: -CO(CH2)3CO-, -CO(CH2)4CO- (adipate), -CO(CH2)5CO- (e.g. A is ό/s(N-hydroxysuccinimidyl) adipate), preferably Si is a C3-5-aminoalkyI selected from the group consisting of: 3- aminopropyl, 4-aminobutyl, or 5-aminopentyl). More preferably Si is 3-aminopropyl. In a second embodiment F is a molecule that mediates a cell-cell or cell-surface interaction. Preferably F is carbohydrate, protein or lipid with an affinity for a component expressed on a targeted cell or surface. More preferably F has an affinity for a component expressed on epithelial cells or extra-cellular matrices. Yet more preferably F has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium. Most preferably the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
In a third embodiment F is a molecule that mediates a cell-solute interaction. Preferably F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition. More preferably F is a ligand for an antibody (immunoglobulin).
In specific embodiments the water soluble synthetic molecule construct has the structure:
Figure imgf000012_0001
designated Atri-sp-Ad-DOPE (I); the structure:
Figure imgf000013_0001
designated Atri-spspι-Ad-DOPE (II); the structure:
Figure imgf000013_0002
designated Atri-sp-Ad-DSPE (III); the structure
Figure imgf000013_0003
designated Btri-sp-Ad-DOPE (VI); the structure:
Figure imgf000014_0001
designated Htri-sp-Ad-DOPE (VII); the structure
Figure imgf000014_0002
designated Hdi-sp-Ad-DOPE (VIII); the structure:
Figure imgf000014_0003
designated Galβrsp-Ad-DOPE (IX); the structure:
Figure imgf000014_0004
designated Fucα1-2Galβ1-3GIcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); or the structure:
Figure imgf000015_0001
designated Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII). M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
In a fourth aspect the invention consists in a water soluble synthetic molecule construct prepared by a method according to the third aspect of the invention. In a fifth aspect the invention consists in a method of effecting qualitative and/or quantitative changes in the surface antigens expressed by a cell or multi-cellular structure including the step:
1. Contacting a suspension of the cell or multi-cellular structure with a synthetic molecule construct according to the second aspect or fourth aspect of the invention for a time and at a temperature sufficient to effect the qualitative and/or quantitative change in the surface antigens expressed by the cell or multi-cellular structure.
Preferably the cell or multi-cellular structure is of human or murine origin.
Preferably the concentration of the water soluble synthetic molecule construct in the suspension is in the range 0.1 to 10 mg/mL
Preferably the temperature is in the range 2 to 37 °C. More preferably the temperature is in the range 2 to 25 °C. Most preferably the temperature is in the range 2 to 4 °C.
In a first embodiment the ceil is a red blood cell.
In this embodiment preferably F is selected from the group of glycotopes comprising the terminal sugars GalNAcα1-3(Fucα1-2)Galβ; Galα1-3Galβ; Galβ; Galα1-3(Fucα1-2)Galβ; NeuAcα2-3Galβ; NeuAcα2-6Gaiβ; Fucα1-2Galβ; Ga|β1-4GlcNAcβ1-6(Galβ1-4GlcNAcβ1- 3)Galβ; Fucα1-2Galβ1-4GlcNAcβ1-6(Fucα1-2Galβ1-4GlcNAcβ1-3)Galβ; Fucα1-2Galβ1- 4GlcNAcβ1-6(NeuAcα2-3Galβ1-4GlcNAcβ1-3)Galβ; NeuAcα2-3Galβ1-4GlcNAcβ1- 6(NeuAcα2-3Galβ1-4GlcNAcβ1-3)Galβ; Galα1-4Galβ1-4Glc; GalNAcβ1-3Galα1-4Galβ1-4Glc; GalNAcα1-3GalNAcβ1-3Galα1-4Galβ1-4Glc; or GalNAcβ1-3GalNAcβ1-3Galα1-4Galβ1-4Glc. More preferably F is selected from the group of glycotopes consisting of the oligosaccharides GalNAcα1-3(Fucα1-2)Galβ and Galα1-3(Fucα1-2)Galβ.
Preferably the synthetic molecule construct is selected from the group including: Atπ-sp-Ad- DOPE (I); A,ri-spsprAd-DOPE (II); Atπ-sp-Ad-DSPE (III); Btπ-sp-Ad-DOPE (VI); Htπ-sp-Ad- DOPE (VII); H^-sp-Ad-DOPE (VIII); Galβ,-sp-Ad-DOPE (IX); Fucα1-2Galβ1-3GlcNAcβ1- 3GaIβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII).
In a second embodiment the multi-cellular structure is an embryo.
In this embodiment preferably F is an attachment molecule where the attachment molecule has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium.
The component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
Preferably the synthetic molecule construct is selected from the group including: Atri-sp-Ad- DOPE (I); Atrι-spsp Ad-DOPE (II); Atr,-sp-Ad-DSPE (III); Btrl-sp-Ad-DOPE (VI); Htπ-sp-Ad- DOPE (VII); Hdl-sp-Ad-DOPE (VIII); Galβ,-sp-Ad-DOPE (IX); Fucα1-2Galβ1-3GlcNAcβ1- 3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII).
In a third embodiment the cell is red blood cell.
In this embodiment preferably F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition. More preferably F is a ligand for an antibody (immunoglobulin).
In a sixth aspect the invention consists in a cell or multi-cellular structure incorporating a water soluble synthetic molecule construct according to the second or fourth aspect of the invention.
Preferably the cell or multi-cellular structure is of human or murine origin.
In a first embodiment the cell is a red blood cell incorporating a water soluble synthetic molecule construct selected from the group including: Atrj-sp-Ad-DOPE (I); Atri-spspι-Ad-DOPE (II); Atπ-sp-Ad-DSPE (III); Btπ-sp-Ad-DOPE (VI); Hm-sp-Ad-DOPE (VII); Hdl-sp-Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucα1-2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIH).
In a second embodiment the multi-cellular structure is an embryo incorporating a water soluble synthetic molecule construct selected from the group consisting of: Aw-sp-Ad-DOPE (I); Aω- spspi-Ad-DOPE (II); Atri-sp-Ad-DSPE (III); Btri-sp-Ad-DOPE (VI); Hw-sp-Ad-DOPE (VII); Hdrsp- Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucα1-2GaIβ1-3GIcNAcβ1-3Galβ1-4GlcNAc-sp-Ad- DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII). In a seventh aspect the invention consists in a kit comprising a dried preparation or solution of a molecule according to the first aspect of the invention, or a dried preparation or solution of a water soluble synthetic molecule construct according to the second or fourth aspect of the invention. Preferably the molecule according to the first aspect of the invention is selected from the group consisting of: Ad-DOPE; sp Ad-DOPE; and Ad-DSPE.
Preferably water soluble synthetic molecule construct according to the second or fourth aspect of the invention is selected from the group consisting of: Atrrsp-Ad-DOPE (1); Aw-spsp Ad- DOPE (II); Atrl-sp-Ad-DSPE (111); Btn-sp-Ad-DOPE (VI); Htri-sp-Ad-DOPE (VII); Hdi-sp-Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucα1-2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII).
In an eighth aspect the invention consists in a kit comprising a suspension in a suspending solution of cells or multi-cellular structures according to the sixth aspect of the invention.
Preferably the suspending solution is substantially free of lipid.
Preferably the cell or multi-cellular structure is of human or murine origin.
Preferably the cells are red blood cells that do not naturally express A- or B-antigen and incorporate a water soluble synthetic molecule construct selected from the group consisting of: Aw-sp-Ad-DOPE (I); Atrrspsp Ad-DOPE (II); Aw-sp-Ad-DSPE (III); Bw-sp-Ad-DOPE (VI); H,π- sp-Ad-DOPE (VII); Hdi-sp-Ad-DOPE (VIII); Galβ,-sp-Ad-DOPE (IX); Fucα1-2Galβ1-3GlcNAcβ1- 3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII). More preferably the cells are sensitivity controls.
In a ninth aspect the invention consists in a pharmaceutical preparation comprising a dried preparation or solution of a water soluble synthetic molecule construct according to the second or fifth aspect of the invention. Preferably the pharmaceutical preparation is in a form for administration by inhalation.
Preferably the pharmaceutical preparation is in a form for administration by injection. In an tenth aspect the invention consists in a pharmaceutical preparation comprising cells or multi-cellular structures according to the sixth aspect of the invention.
Preferably the cells or multi-cellular structures are of human or murine origin. Preferably the pharmaceutical preparation is in a form for administration by inhalation.
Preferably the pharmaceutical preparation is in a form for administration by injection.
DETAILED DESCRIPTION
The synthetic molecule constructs of the invention spontaneously and stably incorporate into a lipid bi-layer, such as a membrane, when a solution of the molecule is contacted with the lipid bi-layer. Whilst not wishing to be bound by theory it is believed that the insertion into the membrane of the lipid tails of the lipid (L) is thermodynamically favoured. Subsequent disassociation of the synthetic molecule construct from the lipid membrane is believed to be thermodynamically unfavoured. Surprisingly, the synthetic molecule constructs identified herein have also been found to be water soluble.
The synthetic molecule constructs of the invention are used to transform cells resulting in qualitative and/or quantitative changes in the surface antigens expressed. It will be recognised that the transformation of cells in accordance with the invention is distinguished from transformation of cells by genetic engineering. The invention provides for phenotypic transformation of cells without genetic transformation.
In the context of this description the term "transformation" in reference to cells is used to refer to the insertion or incorporation into the cell membrane of exogenously prepared synthetic molecule constructs thereby effecting qualitative and quantitative changes in the cell surface antigens expressed by the cell.
The synthetic molecule constructs of the invention comprise an antigen (F) linked to a lipid portion (or moiety) (L) via a spacer (S S2). The synthetic molecule constructs can be prepared by the condensation of a primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine derivative of the antigen with an activated lipid. Methods of preparing neoglycoconjugates have been reviewed (Bovin, N. Biochem. Soc. Symp., 69, 143-160).
A desired phenotypic transformation may be achieved using the synthetic molecule constructs A desired phenotypic transformation may be achieved using the synthetic molecule constructs of the invention in a one step method or a two step method. In the one step method the water soluble synthetic molecule construct (F-SrS2-L) comprises the surface antigen as F.
In the two step method the synthetic molecule construct (F-S1-S2-L) comprises an antigen (F) that serves as a functional group to which a surface antigen can be linked following insertion of the synthetic molecule construct into the membrane. The functional group can be a group such as a lectin, avidin or biotin. When used in the two step method the synthetic molecule construct is acting as a synthetic membrane anchor.
In accordance with the invention the primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine and the activator of the lipid are selected to provide a synthetic molecule construct that is water soluble and will spontaneously and stably incorporate into a lipid bi-layer when a solution of the synthetic molecule construct is contacted with the lipid bi- layer.
In the context of this description the phrase "water soluble" means a stable, single phase system is formed when the synthetic molecule construct is contacted with water or saline (such as PBS) in the absence of organic solvents or detergents, and the term "solution" has a corresponding meaning.
In the context of this description the phrase "stably incorporate" means that the synthetic molecule constructs incorporate into the lipid bi-layer or membrane with minimal subsequent exchange between the lipid bi-layer or membrane and the external aqueous environment of the lipid bi-layer or membrane.
The selection of the primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine and the activator depends on the physico-chemical properties of the antigen (F) to be linked to the lipid (L).
It will be understood by those skilled in the art that for a non-specific interaction, such as the interaction between a diacyl- or dialkyl-glycerolipid and a membrane, structural and stereoisomers of naturally occurring lipids can be functionally equivalent. For example, it is contemplated by the inventors that diacylglycerol 2-phosphate could be substituted for phosphatidate (diacylglycerol 3-phosphate). Furthermore it is contemplated by the inventors that the absolute configuration of phosphatidate can be either R or S.
The inventors have determined that to prepare synthetic molecule constructs of the invention where the antigen (F) is an oligosaccharide selected from the group of glycotopes for A-, B- and H-antigens of the ABO blood groups, the primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine, and the activator should be selected to provide a Alternative structures of S1-S2 for a water soluble synthetic molecule construct (F-S1-S2-L) where F is a carbohydrate (or other antigen) with similar physico-chemical properties to the carbohydrate portion of the A-, B- or H-antigeπs of the ABO blood groups and L is a glycerophospholipid (n, m independently = 2 to 5)
Si is selected from: S2 is selected from:
-CO(CH2)nCO- -0(CH2)nNH- or
-CO(CH )mNHCO(CH2)nCO-
It will be understood by one skilled in the art that once the structure of the spacer (SrS2) has been determined for a given class of antigens, the same structure of the spacer can be adopted to prepare synthetic molecule constructs of other classes of antigen with similar physico-chemical properties.
For example, the structure of the spacer for synthetic molecule constructs (F-SrS∑-L) where F is a glycotope of the A-, B- and H-antigens of the ABO blood groups, may be the structure of the spacer selected to prepare synthetic molecule constructs of other antigens with physico- chemical properties similar to the glycotopes of the A-, B- and H-antigens of the ABO blood groups.
In principle the glycotope of a broad range of blood group related glycolipids or glycoproteins could be the antigen (F) of the synthetic molecule construct F-S1-S2-L where S S -L is identical or equivalent to the corresponding portion of the synthetic molecule constructs designated Aw-sp-Ad-DOPE (I), Atri-spspι-Ad-DOPE (II), Aw-sp-Ad-DSPE (III), Btπ-sp-Ad-DOPE (VI), Hw-sp-Ad-DOPE (VII), Hdrsp-Ad-DOPE (VIII), Galβ-sp-Ad-DOPE (IX), Fucα1-2Galβ1- 3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII), and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp- Ad-DOPE (XIII). The structures of known blood group-related glycolipids and glycoproteins (see references) are provided in the following list:
Glycolipids* (*ln general, for almost all examples of A-antigens the terminal A sugar GalNAc can be replaced with the B sugar Gal. Additionally, the lack of either the A or B determinant creates the equivalent H determinant.)
A-6-1 Gal Acα1→3Galβ1→3GlcNAcβ1→3Galβ1→4Glcβ1→1Cer t Fticαl
A-6-2 GalNAcα1→3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer t Fucαl
A-7-2 (ALey) GalNAcα1→3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 2 3 t t Fucαl Fϋcα1
A-7-1 (ALeb) GalNAcα1→3Galβ1→3GIcNAcβ1->3Galβ1→4Glcβ1→1Cer 2 4 t t Fϋcα1 Fucαl
A-7-4 GaINAcαl→-3Galβ1- 3GalNAcβ1- 3Galα1 →4Galβ1- 4Glcβ1-»1Cer 2 t Fϋcαl
A-8-2 Gal Acαl→3Galβ1→4GlcNAcβ1→3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1->1Cer 2 t Fucαl
A-9-3 GalNAcα1→3Galβ1→3Gal Acα1→3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer t Fϋcαl Fϋcαl A-12-2 Fucαl i 2 GalNAcα1->3Galβ1→4GlcNAcβ1 β Galβ1→4GlcNAcβ1→3Ga!β1→4Glcβ1→1Cer GalNAcα1→3Galβ1-»4G!cNAcβ1 t Fucαl A-1 -2 Fϋcαl i 2 GaINAcα1→3Galβ1→4Glc Acβ16 Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer GαlNAcαl →3Gαlβl →4GlcNAcβl →3Gαlβl →4GlcNAcβl t Fucαl
A-16-2 Fϋcαl lβ1→ GlcNAopi→3Galβ1→4Glc Acβ1→3Galpi→4Glcβ1→1Cer
Figure imgf000022_0001
Lactosylceramide Galβ1→4Glcβ1-»1Cer Hematoside/GM3 NeuAcα2→3Galβ1→4G!cβ1->1Cer Lactotriaosylceramide GtcNAcβ1→3GaIβ1→4Glcβ1-»1Cer Globotriaosylceramide/Pκ Galα1→4Galβ1→4Glcβ1→1Cer
Globoside/P GalNAcβ1→3Ga!α1→4Galβ1→4Glcβ1→1Cer Paragloboside/neolactotetraosylceramide Galβ1→4GlcNAcβ1→3Galβ1-»4Glcβ1→1Cer Lec-4/Lactotetraosylceramide Galβ1->3GlcNAcβ1→3Galβ1→4G!cβ1-»1Cer Sialoyl paragloboside/sialoyl neolactotetraosylceramide NeuAcα2→3GaIβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer H-5-1 Galβ1→3GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 2 t Fϋcαl
Lex-5 Galβ1→4GlcNAcβ1→3GaIβ1→4Glcβ1→1Cer 3 t Fucαl
H-5-2 Galβ1→4GlcNAcβ1-»3Galβ1→4Glcβ1→1Cer 2 t Fϋcαl
Lea-5 Galβ1→3GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 4 t Fϋcαl
Sialyl Le* NeuAcα2-»3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer t Fucαl
Sialyl Lea-6/gastrointestinal cancer antigen (GICA or Ca 19-9) NeuAcα2→3Galβ1→3GlcNAcβ1->3Galβ1→4Glcβ1→1Cer 4 t Fϋcαl Disialoyl Lea-7 NeuAcα2 t 6 GaIβ1->3GlcNAcβ1- 3Galβ1→4Glcβ1→1Cer 3 4 t t NeuAcα2 Fucαl Leb-6 Galβ1→3GlcNAcβ1→3Galβ1→4Glcβ1->1Cer
Fϋcαl Fucαl
Ley-6
Figure imgf000024_0001
Fϋcαl Fucαl
P-like GalNAcβ1→3Galβ1- 4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer Forssman antigen GalNAcα1- 3GalNAcβ1→3Galα1→4Galβ1- 4Glcβ1→1Cer
Cad erythrocyte GalNAcβ1→4Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 3 t NeuAcα2
Cad hepato-carcinoma antigen GalNAcβ1→4Galβ1→3GalNAcβ1→4Galβ1→4G!cβ1- 1Cer 3 3 t t NeuAcα2 NeuAcα2
Pi Galα1-»4Galβ1- 4GlcNAcβ1→3Galβ1-»4Glcβ1→1Cer
LKE/'GL 7/SSEA-4 NeuAcα2→3Galβ1→3GalNAcβ1→3GaIα1→4Galβ1→4Glcβ1→1Cer B-6-1 Gakx1→3Galβ1→3GlcNAcβ1→3Galβ1→4GIcβ1→1 Cer 2 t Fϋcαl H-6-4 Galβ1→3GalNAcβ1→3Galα1→4Galβ1→4Glcβ1→1Cer 2 t Fϋcαl B-6-2 Galα1→3Galβ1→4GIcNAcβ1→3Galβ1→4Glcβ1→1Cer 2 f Fucαl
BLeD-7
Figure imgf000025_0001
Fucαl Fucαl
BLey-7
Figure imgf000025_0002
Fϋcαl Fucαl
i antigen/lacto-N-πor-hexaosylceramide Galβ1→4GlcNAclβ1→3Galβ1 →4GlcNAcβ1-»3Galβ1→4Glcβ1→1Cer Sialyl-πor-hexaosylceramide/sialoyl-lacto-N-nor-hexaosylceramide NeuAcα2→3Galβ1→4GlcNAcIβ1→3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer Le -7 Galβ1-»4GlcNAclβ1→3Galβ1→3Glc NAcβ1-»3Galβ1→4Glcβ1→1 Cer t Fϋcαl
H-8-3 GaIβ1- 3GalNAcα1→3Galβ1→4GlcNAcβ1→3Galβ1- 4Glcβ1→1 Cer 2 t t Fϋcαl Fucαl Lex-8 Galβ1→4GlcNAcβ1→3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 5 t 3 t Fϋcαl Fϋcαl Le"-8
Figure imgf000026_0001
Fϋcαl Fucαl Lea-11 Galβ1→3GIcNAcβ1→3Galβ1→3GlcNAcβ1→3Galβ1→3GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 4 4 4 t t Fucαl Fucαl Fucαl B-8-2 Cer
Figure imgf000026_0002
Fucαl
I antigen
Galβ1→4GlcNAcβ1 6 Galβ1-»4GlcNAcβ1→3Galβ1→4Glcβ1→1Cei Galβ1→4GlcNA=β1 3
Le°-9 (fucosylated backbone) Galβ1→3GlcNAcβ1 6 Galβ1→3GlcNAcβ1→3Galβ1→4Glcβ1→1Cer GaIβ1→4GlcNAcβ1 3 t Fϋcαl
Lec-9 (fucosylated branch) Fϋcαl 3 Galβ1→4GlcNAcβ16 Galβ1→3GIcNAcβ1→3Galβ1→4Glcβ1-»1Cer Galβ1→3GlcNAcβ13
VIM-2 Galβ1→4Glc Acβ1→3Galβ1→4GlcNAcβ1→3Gaiβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 3 3 t t NeuAcα2 Fucαl Erythrocyte FI antigen
Fϋcαl i 2 Galβ1→4GlcNAcβ1 Q Galβ1→4GlcNAcβ1→3Galβ1->4Glcβ1→1 Cer Galβ1→4GlcNAcβ1 3 3 t NeuAcα2
Lex-11 Galβ1- 4GlcNAcβ1→3Galβ1→4GlcNAcβ1→3Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer 3 3 3 t t t Fucαl Fucαl Fucαl
B-12-2 Fϋcαl I 2 Galα1 →3Galβ1->4GlcNAcβ16 Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer Galα1→3Galβ1-»4GlcNAcβ1 3 2 t Fϋcαl
B-14-2 Fϋcαl 2 Gakx1→3Galβ1→4GlcNAcβ1 6 Galβ1→4GlcNAcβ1→3Galβ1→4Glcβ1→1Cer Galα1→3Galβ1→4GlcNAcβ1→3Galβ1→4GlcNAcβ1 3 2 t Fϋcαl
B-16-2 Pϋcαl I 2 Galαl→SGalβl- GIcNAcβl Galβ1→ Glc Acβ1→3Galβ1→ GlcMAcβ1→3Galβ1→ Glcβ1→1Cer Galαl→SGalβl-^GlcNAcβl→SGalβl- GfcNAcβl 3 2 t Fucαl l-active polyglycosylceramide Glβ-4GcNβ-6 Glβ-4GcNβ-6 Glβ-4GcNβ-6 Glβ-4GcNβ-3Glβ-4GcNβ-3Glβ-4GcNβ-3Glβ-4GcNβ-3Glβ-4GcNβ-3Glβ-4GcNβ-3Glβ-4Gcβ-1Cer
O-linked Glycoproteins Monosialotrisaccharide Ga Iβ1 →3Ga INAcαl →Sδr/Thr 3 J, NeuAcα2 Disialotetrasaccharide Ga Iβ 1 →3Ga INAcαl →-Sbr lhr 3 6 NeuAcα2 NeuAcα2
Disialoyl group oligosaccharide NeuAcα2→8NeuAcα2 t 6 Ga Iβ1 -»3Ga INAcαl →-Sδ r/Tfir 3 NeuAcα2→8NeuAcα2
H-active trisaccharide Ga Iβ1 →3GalNAcα1 - &r/Thr 2 i Fϋcαl
Sialylated H-active tetrasaccharide Ga Iβ1 - 3GalNAcα1 →Ser/Thr 2 6 i I Fucαl NeuAcα2
Cad oligosaccharide GalNacβ1→4Galβ1->3GalNAcα1→S3rπhr 3 6 I i NeuAcα2 NeuAcα2
GlcNAc oligosaccharide NeuAc 2 t 3 Ga Iβ1 -»3Ga INAcαl→Ssr/T r I GaIβ1→4GlcNAcβ1 Mucin oligosaccharide/A-active glycoprotein Fucαl T 2 Ga INAcαl →3Galβ1 →3GaJNAcα1 -»S3r/"ϊhr i Galβ1→4GlcNAcβ1 Ovarian cyst A-active glycoprotein-6a GaINAcα1→3Galβ1- 3GlcNAcβ1-^3Galβ1- 3GalNacα1→-&rπhr 2 t Fucαl
Ovarian cyst A-active glycoprotein-6b GalNAcα1- 3Galβ1- 4GlcNAcβ1→3Galβ1→3GalNacα1→-&r/Thr 2 t Fϋcαl
Ovarian cyst Lea-active glycoprotein-7 Fucαl
Galβ1->3GlcNAcβ1→3Galβ1→4GlcNAcβ1 t 6 Galβ1→3GaINAcα1->S2r/"ϊhr
Ovarian cyst Lea-active glycoprotein-10 Fϋcαl
Galβ1->3GlcNAcβ1-»3Galβ1→4GlcNAcβ1 t GaIβ1- 3GlcNAcβ1- 3Galβ1- 3Gall&cα1->&r/lιr f Fϋcαl
Ovarian cyst A-active glycoprotein-18 lNAcα1- Ser/Tr.r
Figure imgf000030_0001
GalNAcα1→3Galβ1→3GlcNAcβ1 t t Fϋcαl Fϋcαl
N-linked Glycoproteins Complex type/Alkali-stable chain NeuAcα2 J, Galβl- 4GlcNAcβl→2Manαl Fϋcαl 6 6 GlcNAcβl->4Manβl→4GlcNAcβl-»4GlcNAcβl-»Asn 3 f Galβl-MGIcNAcβl->2Manαl t NeuAcα2 *
Hybrid type Manαl
Manαl Manαl Manβl→4GlcNAcβl-»4GlcNAcβl->Asn
Galβ1-→ GlcNAcβ1→2Manα1
Tamm-Horsfall glycoprotein NeuAcα2 i GalNAcβ1→4GaIβ1→4GlcNAcβ1 t
βl-»4Glc NAc βl→4GlcNAc βl- Asn
Figure imgf000031_0001
High-mannose type Manα1-»2Manα1 A Manαl... Manα1->2Manα1 Manβl→4GlcNAcβl→4GlcNAcβl→Asn
Manα1-»2Manα1-»2Manα1
Disialyl foetal erythrocyte antigen NAα3 i Glβ4GcNβ3(Glβ4GcNβ3)4Glβ4GcNβ2Mα6 Gc Nβ4Mβ4Gc Nβ4Gc NβAsn t G|β4Gc Nβ3Glβ4Gc Nβ2Mα3 NAα6 Trisialoyl foetal erythrocyte antigen (disialoyl group on branch) NAα6NAα3 i Glβ4GcNβ3(Glβ4GcNβ3)4Glβ4GcNβ2Mα6 Gc Nβ4Mβ4Gc Nβ4Gc NβAsn t Glβ4GcNβ3Glβ4GcNβ2Mα3 NAα6
Monofucosyl-monosialyl foetal erythrocyte antigen (fucosylated backbone) NAα3 I Glβ4GcNβ3(Glβ4GcNβ3)4GIβ4GcNβ2Mα6 Gc Nβ4Mβ4Gc Nβ4Gc NβAsn t Glβ4Gc Nβ3Glβ4Gc Nβ2Mα3 Fα2
Monofucosyl-monosialyl foetal erythrocyte antigen (fucosylated branch) Fα2 i Glβ4GcNβ3(Glβ4GcNβ3) Glβ4GcNβ2Mα6 GcNβ4Mβ4GcNβ4GcNβAsn t Glβ4GcNβ3Glβ4GcNβ2Mα3 NAα6
Monofucosyl-disialyl foetal erythrocyte antigen (disialyl group on branch) NAα6NAα3 i Glβ4GcNβ3(Glβ4GcNβ3)4Glβ4GcNβ2Mα6 Gc Nβ4Mβ4Gc Nβ4Gc NβAsn t Jlβ4GcNβ3Glβ4GcNβ2Mα3 • Rx2 Difucosyl foetal erythrocyte antigen Fα2 i Glβ4GcNβ3(Glβ4GcNβ3)4Glβ4GcNβ2Mα6 Gc Nβ4Mβ4Gc Nβ4Gc NβAsn t Glβ4GcNβ3Glβ4GcNβ2Mα3 Fα2 Foetal lactosaminoglycan (GlcNAcβl→3Galβl→4)6GlcNAcβl→2Manαl 6 Galβl→4GlcNAcβl→4Manβl→4GlcNAcβl->4GlcNAcβl-→Asn 3 t Galβl->4GIcNAcβl-»3Galβl→4GlcNAcβl→2Manαl
Adult lactosaminoglycan
Figure imgf000033_0001
Monofucosyl-monosialoyl adult erythrocyte antigen GIβ4GcNβ6 Glβ4GcNβ6 Glβ4GcNβ6 (Glβ4GcNβ3)2Glβ4(GcNβ3Glβ4)2GcNβ3Glβ4GcNβ3Glβ4GcNβ3Glβ4GcNβ3Glβ4GcNβ2Mα6 Fα6 Glβ4GcNβ4Mβ4GcNβ4GcNβAsn Glβ4GcNβ3Glβ4GcNβ3Glβ4GcNβ3Glβ4GcNβ2Mα3 t NAα3 GcNβ6 GcNβ6 Glβ4 t Glβ4 t
Monofucosyl-monosialoyl adult erythrocyte antigen Glβ4GcNβ6 Glβ4GcNβ6 Glβ4GcNβ6
(Glβ4GcNβ3)2Glβ4(GcNβ3Glβ4 GcNβ3Glβ4GoNβ3Glβ4GcNβ3Glβ4GcNβ3Glβ4GcNβ2Mα6 Fό 6 Glβ4Gc Nβ4Mβ4Gc Nβ4GcNβAsn Glβ4Gc Nβ3Glβ4Gc Nβ3Glβ4Gc Nβ3Glβ4Gc Nβ2Mα t3 Aα6 GcNβ6 GcNβ6 Glβ4 t Glβ4 t
Difucosyl adult erythrocyte antigen
Figure imgf000034_0001
Key: Gl = D-Gal, Gc = D-Glc, GcN = D-GlcNAc, M = D-Man, F = L-Fuc, NA = NeuAc.
It will be understood by those skilled in the art that the synthetic molecule constructs (F-S S2- L) of the invention where F is an oligosaccharide may be used as "synthetic glycolipids" and substituted for glycolipids obtained from biological (botanical or zoological) sources.
In the context of this description of the invention the term "glycolipid" means a lipid containing carbohydrate of amphipathic character including: glycosylated glycerolipids, such as glycosylated phosphoglycerides and glycosylglycerides; glycosylated sphingolipids (neutral glycolipids) such as glycosylceramides or cerebrosides; and gangliosides (acidic glycolipids).
In the context of this description of the invention the phrase "glycolipid-linked antigen" means a lipid containing carbohydrate in which an antigen (e.g. a protein) is linked to the glycolipid via the carbohydrate portion of the molecule. Examples of glycolipid-linked antigens include GPI- linked proteins.
It will be understood by those skilled in the art that a glycolipid is itself an antigen. The term and phrase "glycolipid" and "glycolipid-linked antigen" are used to distinguish between naturally occurring molecules where the antigen is the glycolipid and naturally occurring molecules where the antigen is linked to the glycolipid via the carbohydrate portion of the glycolipid. By analogy the synthetic molecule constructs of the invention could be described as both "synthetic glycolipids" and synthetic membrane anchors to the extent that the antigen may be the synthetic glycolipid perse or attached to the synthetic glycolipid.
It will be understood by those skilled in the art that the carbohydrate portion of a glycolipid may be modified and linked to other antigens by the methods described in the specification accompanying the international application no. PCT/NZ2003/00059 (published as WO03087346).
In the context of this description of the invention the term "glycotope" is used to refer to the antigenic determinant located on the carbohydrate portion of a glycolipid. The classification of glycolipid antigens in blood group serology is based on the structure of the carbohydrate portion of the glycolipid. In blood group serology it is known that the terminal sugars of the glycotopes of A-antigens are GalNAcα1-3(Fucα1-2)Galβ, and the terminal sugars of the glycotopes of the B-antigens are Galαl -3(Fucα1 -2)Galβ. Incorporation into the membrane of RBCs of water soluble synthetic molecule constructs of the invention where F is GalNAcα1-3(Fucα1-2)Galβ or Galα1-3(Fucα1- 2)Galβ provides RBCs that are serologically equivalent to A-antigen or B-antigen expressing RBCs, respectively.
The terminal three sugars of the carbohydrate portion of the naturally occurring A- or B-antigen are the determinant of the A and B blood groupings. The terminal four or five sugars of the carbohydrate portion of the naturally occurring A-antigen are the determinant of the A blood sub-groupings A type 1 , A type 2, etc. Accordingly the RBCs incorporating the synthetic molecule constructs of the invention can be used to characterise and discriminate between blood typing reagents (antibodies) of differing specificity. Water soluble synthetic molecule constructs of the invention that exclude a carbohydrate portion are contemplated by the inventors. Antigens other than carbohydrates or oligosaccharides, but with similar physico-chemical properties, may be substituted for F in the "synthetic glycolipids" described. Synthetic molecule constructs of the invention that comprise an antigen (F) with differing physico-chemical properties to those of carbohydrates or oligosaccharides are also contemplated by the inventors. Water soluble synthetic molecule constructs comprising these antigens may be prepared by selecting different spacers.
The advantages provided by the synthetic molecule constructs of this invention will accrue when used in the practice of the inventions described in the specifications for the international application nos. PCT/N02/00212 (published as WO03/034074) and PCT/NZ03/00059 (published as WO03087346). The specifications accompanying these applications are incorporated herein by reference.
The synthetic molecule constructs overcome many of the limitations of using natural glycolipids in the practice of these inventions. A particular advantage of the synthetic molecule constructs is their superior performance and ability to be used in the transformation of cells at reduced temperatures, e.g. 4°C.
As described herein not all structures of the spacer (SrS2) will provide a synthetic molecule construct (F-SrS2-L) that is water soluble and spontaneously and stably incorporate in to a lipid bilayer such as a cell membrane. The synthetic molecule constructs designated Aw-sp- lipid (IV) and Atri-PAA-DOPE (V) were determined not to be water soluble and/or unable to spontaneously and stably incorporate in to a lipid bilayer such as a cell membrane.
Figure imgf000036_0001
designated Aw-sp-lipid (IV)
Figure imgf000036_0002
designated Aw-PAA-DOPE (V) where x, y = 0.05 to 0.2
The invention will now be illustrated by reference to the following non-limiting Examples and Figures of the accompanying drawings in which:
Figure 1 shows Diamed results of Cellstab™ stored cells transformed by natural A glycolipid transformation solution at (L to R) 10 mg/mL, 5 mg/mL, 2 mg/mL, 2 mg/mL* and 1 mg/mL Antisera used are Albaclone (top) and Bioclone (bottom). (* - transformation solution (containing glycolipids) was not washed out after the incubation, it was left in over night and washed out the next day (day 2).)
Figure 2 shows Diamed results of Cellstab™ stored cells transformed by natural B glycolipid transformation solution at (L to R) 10 mg/mL, 5 mg/mL, 2 mg/mL, 2 mg/mL* and 1 mg/mL. Antisera used are Albaclone (top) and Bioclone (bottom). (* - transformation solution (containing glycolipids) was not washed out after the incubation, it was left in over night and washed out the next day (day 2)). Figure 3 shows FACS analysis following in vitro transformation of human Le(a-b-) red cells with natural Leb-6 glycolipid over time at three transformation temperatures, 37°C (top), 22°C (middle) and 4°C (bottom).
Figure 4 shows Diamed results of cells transformed at 4°C by Aw-sp-Ad-DOPE (I) transformation solution at (L to R): washed 0.08 mg/mL; unwashed 0.08 mg/mL; washed 0.05 mg/mL; unwashed 0.05 mg/mL; washed 0.03 mg/mL; and unwashed 0.03 mg/mL. The antisera used was Bioclone anti-A.
Figure 5 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by Aw-sp-Ad-DOPE (I) transformation solution at (L to R): 0.08 mg/mL, 0.05 mg/mL and 0.03 mg/mL. The antisera used was Bioclone anti-A.
Figure 6 shows in the left column Diamed results of cells transformed at 4°C by Btri-sp-Ad- DOPE (VI) transformation solution at (L to R): washed 0.6 mg/mL; unwashed 0.6 mg/mL; washed 0.3 mg/mL; unwashed 0.3 mg/mL; washed 0.15 mg/mL; and unwashed 0.15 mg/mL; and in the right column Diamed results of cells transformed at 4°C by Bω-sp-Ad-DOPE (VI) transformation solution at (L to R): washed 0.08 mg/mL; unwashed 0.08 mg/mL; washed 0.05 mg/mL; unwashed 0.05 mg/mL; washed 0.03 mg/mL; and unwashed 0.03 mg/mL. The antisera used was Bioclone anti-B.
Figure 7 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by Bw-sp-Ad-DOPE (VI) transformation solution at (L to R): 0.6 mg/mL, 0.3 mg/mL and 0.15 mg/mL..
Figure 8 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain washed A 0.07 + B 0.3 mg/mL against anti-A and anti-B. Wells 3 and 4 contain unwashed A 0.07 + B 0.3 mg/mL against anti-A and anti-B.
Figure 9 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.07 + B 0.3 mg/mL against anti-A and anti-B.
Figure 10 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain washed A 0.07 + B 0.2 mg/mL against anti-A and anti-B. Wells 3 and 4 contain unwashed A 0.07 + B 0.2 mg/mL against anti-A and anti-B. Figure 11 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.07 + B 0.2 mg/mL against anti-A and anti-B Figure 12 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and B,π-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain washed A 0.06 + B 0.3 mg/mL against anti-A and anti-B. Wells 3 and 4 contain unwashed A 0.06 + B 0.3 mg/mL against anti-A and anti-B. Figure 13 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.06 + B 0.3 mg/mL against anti-A and anti-B.
Figure 14 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain washed A 0.06 + B 0.2 mg/mL against anti-A and anti-B. Wells 3 and 4 contain unwashed A 0.06 + B 0.2 mg/mL against anti-A and anti-B.
Figure 15 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.06 + B 0.2 mg/mL against anti-A and anti-B.
Figure 16 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain washed A 0.05 + B 0.3 mg/mL against anti-A and anti-B. Wells 3 and 4 contain unwashed A 0.05 + B 0.3 mg/mL against anti-A and anti-B.
Figure 17 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Atπ-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.05 + B 0.3 mg/mL against anti-A and anti-B.
Figure 18 shows Diamed results of cells transformed at 4°C by parallel transformation with Aw- sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain washed A 0.05 + B 0.2 mg/mL against anti-A and anti-B. Wells 3 and 4 contain unwashed A 0.05 + B 0.2 mg/mL against anti-A and anti-B.
Figure 19 shows cells that were no longer washed prior to testing. Diamed results of cells transformed at 4°C by parallel transformation with Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI). Wells 1 and 2 (L to R) contain unwashed A 0.05 + B 0.2 mg/mL against anti-A and anti-B. COMPARATIVE EXAMPLES
The Comparative Examples do not form part of the invention claimed. The Comparative Examples describe red blood cell transformation with natural glycolipids.
Comparative Example 1 - Preparation of Natural Glycolipids
Purification by HPLC In the first stage, columns were packed with dry silica (15-25 μm) before each run. Relatively dirty samples could be used in HPLC because the silica could be discarded along with the theoretically high level of irreversibly bound contaminants.
Glycolipids were separated on silica gel with a mobile phase of increasing polarity. The program was a linear gradient beginning with 100% chloroform-methanol-water 80:20:1 (v/v) and ending with 100% chloroform-methanol-water 40:40: 12 (v/v).
The HPLC equipment used was a Shimadzu system capable of pumping and mixing four separate solvents at programmed ratios. As chloroform, methanol and water evaporate at different rates, a program was developed whereby the solvent components were not mixed prior to entering the HPLC.
The Shimadzu HPLC mixes four different liquids by taking a "shot" from each of four bottles in turn. "Shots" of chloroform and water directly next to each other in the lines may cause miscibility problems. Methanol was sandwiched in between these two immiscible components. Additionally, the water was pre-mixed with methanol in a 1:1 ratio to further prevent problems with miscibility.
Comparative Example 2 - Transformation of Red Blood Cell Transformation with Natural Glycolipids
Agglutination
Transformation of red blood cells was assessed by agglutination using the Diamed-ID Micro Typing System in addition to using conventional tube serology. Diamed ABO typing cards were not used. The cards used were NaCl, Enzyme test and cold agglutinin cards, which were not pre-loaded with any antisera or other reagents. This allowed the use of specific antisera with both methodologies.
Table 1. Gel-cards.
Manufacturer Catalogue ref
Diamed NaCl, Enzyme test and cold agglutinin cards A comparative trial was carried out between tube serology and the Diamed system to establish the performance of the two systems. Cells were transformed at 25°C for 4 hours. Seraclone and Alba-clone anti-A sera were used to gauge equivalency. The results are shown in Table 3 below.
Table 2. Antisera used in comparison of tube serology with the Diamed system . Manufacturer Catalogue ref Lot Expiry Albaclone, SNBTS Anti-A. Z0010770 12.12.04 Seraclone, Biotest 801320100 1310401 12.04.03
Table 3. Agglutination results comparing tube serology with the Diamed system. A glycolipid (mg/mL) 10 5 2 1 0 Tube Albaclone 3+ 2+ 0 0 0 Seraclone 3+ 2+ 0 0 0 Diamed Albaclone 2+ 2+ 0 0 0 Seraclone 3+ 2+ 1 + w+ 0
In this experiment, the Diamed system proved to be more sensitive to the weaker reactions than tube serology with the Seraclone anti-A, but not with Albaclone. These reagents are formulated differently, and are thus not expected to perform identically. However, the fact that the Seraclone anti-A tube serology combination did not detect positivity is probably due to operator interpretation. The weaker reactions are notoriously difficult to accurately score, and the difference between 1+ and 0 can be difficult to discern in tubes.
Optimisation
The variables of glycolipid concentration, incubation temperature, incubation duration, diluent and storage solution were examined for their effect on cell health. Efficiency and stability of transformation was assessed by agglutination with the relevant antibody.
Table 4. Tube serology agglutination of natural glycolipid A transformed cells over different times and temperatures. _ ~ θ 5 2 ϊ αϊ αoϊ 0.001 0.0001 0~
Seraclone
(37°C for 3+ 2+ 0 0 0
1.5 hours) Seraclone
(25°C for4 4+ 3+ 2+ 1+ w+ 0 0 0 0 hours) Glycolipid Concentration Initial transformation experiments were carried out with a highly purified (HPLC) Leb glycolipid sample and a less pure blood group A glycolipid sample. Transformation was performed at 37°C for 1.5 hours
The A glycolipid sample contained other lipid impurities and thus comparatively less blood group A molecules by weight than the Leb glycolipid sample of equivalent concentration (w/v). This seems to be borne out by the fact that higher concentrations of the A glycolipid than the Leb glycolipid were required to produce equivalent agglutination scores (see Table 6).
The level of impurity in the A glycolipid sample may also have contributed to the lower stability over the 62 day period - the A-transformed cells 'died' at the highest concentration (having received the largest dose of impurity).
Table 5. Anti-A and anti-Leb used in initial testing of natural glycolipid transformation.
Manufacturer Catalogue ref Batch number Expiry
Anti-A
Seraclone, Biotest 801320100 1310401 12.04.03
Anti-LeD
CSL 12801
Table 6. Stability of RBCs transformed with natural A and Le glycolipid as assessed by tube serology agglutination over the period of 62 days.
Glycolipid Leb A
(mg/mL) Day 1 Day 25 Day 62 Day 1 Day 25 Day 62
10 4+ 2-3+ 3+ 2+ ?
5 4+ 2-3+ 2+ 2+ w+
2 3+ 1-2+ 0 1 + 0
1 4+ 2+ 0 1 + 0
0.1 3+ 2+ 0 0
0.01 2+ 2+ 0 0
0.001 2+ 2+ 0 0
0.0001 2+ 0 0 0
0 0 0 0 0 0 0 The above cells were also rated for haemolysis and these results are shown in Table 7 below.
Table 7. Haemolysis as assessed visually. Day 1 - in the supernatant of the first wash after transformation; Days 25 and 62 - in the cell preservative solution before the cells are resuspended after storage. Scoring scale is analogous to the 4+ to 0 agglutination scale: hhhh - severely haemolysed, hhh - very haemolysed, hh - moderately haemolysed, h - mildly haemolysed, w - faintly haemolysed and 0 - no haemolysis seen. Glycolipid Haemolysis concentration Leb A (mg/mL) Day 1 Day 25 Day 62 Day 1 Day 25 Day 62 10 h 0 h h h dead 5 hh 0 hhh w 0 hh 2 w 0 hhh w 0 hhhhh 1 w 0 hhh h 0 hhhh 0.1 h hhh 0.01 hh 0.001 h 0.0001 h Control h 0 h h h
These results show that cell haemolysis can be shown to be associated with transformation with high concentrations of glycolipid. It is unclear whether the mechanism underlying this is disruption of the plasma membrane by large amounts of glycolipid being inserted, the rate of that insertion, or is possibly due to the quantity of associated impurity. However, the results for Leb at day 62 seem to support the first explanation.
The Leb sample was highly purified - before being dissolved, it was a powder of pure white colour, and thus it is unlikely that the haemolysis was due to the deleterious effect of impurities. It is clear to see that at 62 days, the amount of haemolysis occurring diminishes in line with the decrease in the glycolipid concentration.
Incubation Temperature
Experiments were carried out to investigate other possible mechanisms for the reduction of haemolysis of RBCs during the insertion step. Previous experiments had shown that haemolysis was worse at higher glycolipid concentrations than at lower concentrations, and it is thought that haemolysis may also be related to the rate of glycolipid insertion. Since temperature is believed to affect the rate of insertion, experiments were conducted comparing transformation at 37°C with transformation at room temperature (RT; 25°C).
Since the rate was expected to slow down as temperature decreased, the incubation period for the RT experiment was 4 hrs. Haemolysis was assessed visually and scored following insertion. Serology tests were also performed on the cells. The results are shown in Table 8. Table 8. The effect of incubation temperature on haemolysis and agglutination during insertion of glycolipids into RBC membranes. Haemolysis was scored visually at each of the three washes. Glycolipid Haemolysis Serology (mg/mL) RT 37 °C RT 37 °C wash 1 wash 2 wash 3 wash 1 wash 2 wash 3 10 w 0 0 hh w 0 2+ 2+ 1 w 0 0 hh h vw 1+ w+
Incubation Duration Incubation at 37°C was carried out for 1 and 2 hours and its effect on cell health and transformation assessed by agglutination with the relevant antibody.
Table 9. Antisera used in the duration of incubation trial. Manufacturer Catalogue ref Batch number Expiry date Albaclone, SNBTS Anti-A. Z0010770 12.12.04 Bioclone, OCD Anti-A, experimental reagent DEV01102 -
Albaclone, SNBTS Anti-B Z0110670 01.07.05
Bioclone, OCD Anti-B, experimental reagent DEV01103 -
Table 10. Effect of incubation time on agglutination of cells transformed with natural glycolipids. Glycolipid Concentration Albaclone BioClone (mg/mL) 1 hour 2 hours 1 hour 2 hours A 10 4+ 4+ 4+ 4+ 5 4+ 4+ 4+ 2+ 2 4+ 3+ 3+ 2+ 1 3+ 2+ 2+ 2+ 0.5 2+ 2+ 1 + w+ B 10 3+ 2+ 4+ 1 + 5 3+ 2+ 3+ 2+ 2 2+ 2+ 2+ 1 + 1 1 + w+ 1 + w+ 0.5 1 + w+ w+ w+
These results indicate that increasing the duration of incubation during natural glycolipid insertion does not enhance agglutination. In fact, the agglutination scores are reduced after the two hour incubation. This may be due to the destabilisation of the membrane or exchange of the glycolipids back into solution. Diluent Experiments were also carried out to determine if changing the glycolipid diluent solution could reduce haemolysis. Working strength PBS was compared with 2 x PBS and 2 % Bovine Serum Albumin (BSA) in working strength PBS. Cells were incubated at 37°C for 1.5 hours. The results are shown in Table 11.
Table 11. Study on the effect on haemolysis of changing the glycolipid diluent solutions during insertion of glycolipids into RBC membranes. Glycolipid Glycolipid Diluent Solution concentration PBS 2 x PBS 2% BSA in PBS (mg/mL) 40 Jι fhh hhh hhh 30 ■yihh hhh hhh 20 JHhh hhh hhh 10 ^nh hhh hhh 0 0 0 0
Stability
Once A and B blood group glycolipids had been HPLC purified to an acceptable level, an experiment to find the appropriate concentrations for stability trials was carried out.
Table 12. Early stability trial of cells transformed with natural A glycolipid.
Expt Day A 10 5 2 1 0.1 0.01 0.001 0.0001 0
1 7 4+ 3-4+ 1 + 0 0 0 0 0 0
2 43 3+ w+ 0 0 0 0 0 0 0
3 50 1 + 0 0 0
4 60 3+ 1 + 0
5 67 w+ vw vw
6 74 2+ 0 0
7 81 2+ 1 + 0
Table 13. Antisera used in stability trials (Table 14 and Table 15).
Manufacturer Catalogue ref Batch number Expiry date
Albaclone, SNBTS Anti-A. Z0010770 12.12.04
Bioclone, OCD Anti-A, experimental reagent DEV01102
Albaclone, SNBTS Anti-B Z0110670 01.07.05
Bioclone, OCD Anti-B, experimental reagent DEV01103 Table 14. Tube serology of O RBCs transformed with A glycolipid in order to establish appropriate concentrations for stability trials.
Anti-A Expt A glycolipid (mg/mL) 10 5 2 1 0.5 0.1 0.01 0.001 0
Alba 1 3+ 2+ 1+ 0 0 0 0 0 2 4+ 4+ 3+ 2+ W+
Bio 1 3+ 2+ 1+ 0 0 0 0 0 2 4+ 4+ 3+ 2+ W+
1 & 2 Transformation at 25°C for 4 hours
Table 15. Tube serology of O RBCS transformed with B glycolipid in order to establish appropriate concentrations for stability trials.
Anti-B Expt B glycolipid (mg/mL) 10 5 2 1 0.5 0.1 0.01 0.001 0
Alba 1 2+ 1 + w+ 0 0 0 0 0 2 1+ 1 + w+ 0 W+
Bio 1 3+ 2+ w+ 0 0 0 0 0 2 1 + 1 + w+ 0 W+
1 & 2 Transformation at 25°C for 4 hours
Two sets of cells were transformed with different concentrations of natural A glycolipid. Transformation was performed at 25°C. One set of cells was tested long term, and one set of cells was tested weekly for agglutination. The agglutination results from tube serology and Diamed are shown in Table 16 below. All cells were stored in Cellstab™ in bottles with flat bases. The cells showed minimal to no haemolysis at any time.
Table 16. Agglutination results for cells transformed with different concentrations of natural A glycolipid. Results were obtained using Albaclone anti-A. A glycolipid (mg/mL) 10 5 2 1 0.1 control Long term testing Day 1 Tube 4+ 3+ 2+ 1 + +w 0 Diamed 3+ 3+ +w 0 0 0 Day 17 Tube 3+ 2+ 0 0 0 Diamed 3+ 2+ 1 + 0 0 Weekly testing Day 1 Tube 3+ 2+ 0 0 Diamed 3+ 0 0 0 Day 8 Tube 1 + 0 0 0 Diamed 3+ 0 0 0 Day 15 Tube 1 + 0 0 0 Diamed 3+ 2+ 0 0 Day 22 Tube 3+ 0 0 0 Diamed 3+ 0 0 0 Day 29 Tube *+w *0 *0 *0 Diamed *3+ *0 *0 *0
Day 36 Tube * * * *0 Diamed *3+ *0 *0 *0
Day 43 Tube * * * *0 Diamed * * * *0
* - Albaclone, while all others used Seraclone anti-A.
Storage solution Comparison of the two cell storage solutions, Celpresol™ (CSL) and Cellstab™ (Diamed) was carried out to test their relative abilities to support modified RBCs.
The stability of RBCs transformed with blood group A and B antigen solutions of varying concentrations when stored in two different cell preservative solutions - Cellstab™ and Alsevers™ - was trialed.
A and B antisera from two different sources were used in serology testing.
All cells were tested using the standard tube serology platform up to 42 days, at which time the cell agglutination reactions had become too difficult to score manually (see Table 17 for A results and Table 18 for B results).
Diamed gel-card testing was carried out to day 56 for the Alsevers stored cells, and discontinued at day 63 due to fungal contamination (although still returning positive scores). The Cellstab™ stored cells continued to be tested up to day 70, and were still viable at this point (see Figure 1 for A results and Figure 2 for B results).
The reagents used in the stability trial are shown in Table 13.
Table 17. Tube serology results of stability trial of cells transformed with varying concentrations of A glycolipid and stored in either Cellstab™ or Alsevers™ Albaclone Anti-A Bioclone Anti-A Cell (SNBTS) (OCD - Developmental reagent) Day storage Transformation Solution (mg/mL) solution 10 5 2 2* 1 10 5 2 2* 1 2 Alsevers 4+ 3+ 2+ 1 + w+ 3+ 3+ 1 + 1 + 0 Cellstab™ 4+ 4+ 3+ 1 + 1 + 3+ 3+ 2+ 1 + 0 8 Alsevers 4+ 4+ 2+ 1 + 1 + 2+ 2+ 1+ 1 + 0 Cellstab™ 4+ 4+ 3+ 2+ 1 + 3+ 3+ 2+ w+ 0 14 Alsevers 4+ 3+ 2+ 2+ w+ 2+ 1 + w+ vw 0 Cellstab™ 4+ 3+ 3+ 2+ w+ 3+ 2+ w+ vw 0 21 Alsevers 3+ 2+ 2+ 2+ 1 + 2+ 2+ 2+ 1+ 0 Cellstab™ 3+ 3+ 2+ + * 2+ * * * 0
28 Alsevers 2+ 2+ 1 + 1+ 0 2+ 2+ 1 + 1 + 0 Cellstab™ 2+* 2+* * * 0 1 + w+ 0 0 0
36 Alsevers 3+ 2+ 2+ 2+ 1 + 3+ 3+ 2+ 1 + 1 + Cellstab™ 3+* 2+* * t * 3+* * * * *
42 Alsevers 3+ 3+ 1 + w+ 0 2+ 2+ 2+ 1 + 1 + Cellstab™ 4+* 4+* * Φ * * * * * 0
* - transformation solution (containing glycolipids) was not washed out after the incubation, it was left in over night and washed out the next day.
* - positive cell button, but cells fall off as negative (score assignment impossible).
Table 18. Tube serology results of stability trial of cells transformed with varying concentrations of B glycolipid and stored in either Cellstab™ or Alsevers™. Albaclone Anti-B Bioclone Anti-B Cell (SNBTS) (OCD . ■ Developmental reagent) Day storage Transformation Solution (mg/mL] ) solution 10 5 2 2* 1 10 5 2 2* 1 2 Alsevers 3+ 3+ 1 + 1 + 1 + 2+ 1 + 1 + 1 + 0 Cellstab™ 3+ 3+ 2+ 2+ 1 + 2+ 2+ 2+ 1 + w+ 8 Alsevers 1 + 1 + w+ 0 0 0 0 0 0 0 Cellstab™ 2+ 1 + w+ 0 1 + 1 + w+ 0 0 14 Alsevers 2+ 2+ 0 w+ 0 0 1 + 1 + 2+ 0 Cellstab™ 1 + w+ 0 0 0 2+ 2+ w+ 1+ 1 + 21 Alsevers * Φ φ * * 1 1 * Φ φ Cellstab™ * t * t * + + + Φ φ 28 Alsevers 2+ 1+ w+ 0 0 2+ 1 + 2+ 0 0 Cellstab™ * * * 0 0 * 0 * φ 0 36 Alsevers 2+ 2+ 2+ 1 + 1+ 2+ 2+ 2+ 1 + 1 + Cellstab™ Φ * * * * Φ * * φ φ 42 Alsevers 2+ 2+ 2+ 2+ w+ 2+ 2+ 1 + w+ w+ Cellstab™ * * * * * Φ * * Φ Φ
* - transformation solution (containing glycolipids) was not washed out after the incubation, it was left in over night and washed out the next day. * - positive cell button, but cells fall off as negative (score assignment impossible).
FACS analysis of glycolipid insertion
Transformation of human Le(a-b-) red cells with natural Leb-6 glycolipid over time at three transformation temperatures (37°C, 22°C and 4°C) was performed (Figure 3). Natural Leb-6 glycolipid was dissolved in plasma and used to transform RBCs at a final concentration of 2 mg/mL and a final suspension of 10%.
Reactivity was determined by FACS analysis using a Gamma anti-Leb. (The serological detection level is around 102 molecules. The insertion of natural glycolipids at 4°C for 8 hours was not detectable by agglutination with antibodies.) Projection of the rate of insertion curve from FACS analysis did not indicate that the rate of insertion at 4°C would have reached agglutination detection levels within 24 hours.
Low incubation temperature Transformation of RBCs with natural A or B glycolipid was perfomed at 37°C for 1 hour and 2°C for varying intervals. Cells were agglutinated with Bioclone anti-A or Bioclone anti-B. The results are provided in Tables 19 and 20. Table 19. Diamed results of comparison of natural A glycolipid transformation at 37°C for 1 hour and 2°C for varying intervals.
Figure imgf000049_0001
Table 20. Diamed results of comparison of natural B glycolipid transformation at 37°C for 1 hour and 2°C for varying intervals.
Figure imgf000049_0002
The rate of transformation is slow for both natural A glycolipid and natural B glycolipid as demonstrated by the negative agglutination scores after 1 hour at 2°C. Considerable insertion at 37°C for this time interval has been demonstrated.
Natural A glycolipid insertion at 2CC required 48 hours to reach the same level of insertion obtainable by transformation at 37°C. After this time further insertion was not observed. Likewise, natural B glycolipid insertion at 2°C was not as rapid as transformation at 37°C. The agglutination scores did not improve upon continued incubation and thus seemed to have reached maximal insertion at this time point for these concentrations. EXAMPLES
The Examples describe red blood cell transformation with the synthetic molecule constructs of the invention. In the context of these examples the term "synthetic glycolipids" is used to refer to these constructs.
Example 1 - Preparation of Synthetic Glycolipids
Materials and methods TLC analysis was performed on silica gel 60 F254 plates (Merck), the compounds were detected by staining with 8% of phosphoric acid in water followed by heating at over 200°C. Column chromatography was carried out on silica gel 60 (0.2-0.063mm, Merck) or Sephadex LH-20 (Amersham). 1H NMR spectra were acquired on a Bruker DRX-500 spectrometer. Chemical shifts are given in ppm (δ) relative to CD3OD.
Synthesis of activated 1,2-0-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE) and 1,2- 0-distereoyl-sn-glycero-3-phosphatidylethanolamine (DSPE)(glycerophospholipids) To a solution of ό/s(N-hydroxysuccinimidyl) adipate (A) (70 mg, 205 μmol) in dry N,N- dimethylformamide (1.5 ml) were added DOPE or DSPE (L) (40μmol) in chloroform (1.5 ml) followed by triethylamine (7 μl). The mixture was kept for 2 h at room temperature, then neutralized with acetic acid and partially concentrated in vacuo.
Column chromatography (Sephadex LH-20, 1:1 chloroform-methanol, 0.2% acetic acid) of the residue yielded the activated lipid (A-L) (37 mg, 95%) as a colorless syrup; TLC (chloroform- methanol-water, 6:3:0.5): R, = 0.5 (DOPE-A), Rf = 0.55 (DSPE-A). H NMR (CDCI3/CD3OD, 2:1), δ:
DOPE-A - 5.5 (m, 4H, 2χ(-CH=CH-), 5.39 (m, 1H, -OCH2-CHO-CH20-), 4.58 (dd, 1H, J=3.67, J=11.98, -CCOOHCH-CHO-CH2O-), 4.34 (dd, 1 H, J=6.61 , J=11.98, -CCOOHCH-CHO-CH20- ), 4.26 (m, 2H, PO-CH^-CHs-NHz), 4.18 (m, 2H, -CH2-OP), 3,62 (m, 2H, PO-CHz-Cfcb-NH≥), 3.00 (s, 4H, ONSuc), 2.8 (m, 2H, -Cjjg-CO (Ad), 2.50 (m, 4H, 2χ(-CH2-CO), 2.42 (m, 2H, -CH2- CO (Ad), 2.17 (m, 8H, 2χ(-CH2-CH=CH-CHa-), 1.93 (m, 4H, COCH2CH2CH2CH2CO), 1.78 (m, 4H, 2χ(COCH2CH2-), 1,43, 1.47 (2 bs, 40H, 20 CH2), 1.04 (m, 6H, 2 CH3).
DSPE-A - 5.39 (m, 1H, -OCH2-CHO-CH20-), 4.53 (dd, 1H, J=3.42, J=11.98, -CCOOHCH- CHO-CH2O-), 4.33 (dd, 1 H, J=6.87, J=11.98, -CCOOHCH-CHO-CH20-), 4.23 (m, 2H, PO- CHa-CHa-NHs), 4.15 (m, 2H, -CH2-OP), 3,61 (m, 2H, PO-CH2-CH2-NH2), 3.00 (s, 4H, ONSuc), 2.81 (m, 2H, -Clda-CO (Ad), 2.48 (m, 4H, 2χ(-CHa-CO), 2.42 (m, 2H, -CHg-CO (Ad), 1.93 (m, 4H, COCH2CHaCH2CH2CO), 1.78 (m, 4H, 2χ(C0CH2CH2-), 1,43, 1.47 (2 bs, 40H, 20 CH2), 1.04 (m, 6H, 2 CH3).
Condensing activated DOPE (orDSPE) with aminopropylglycoside. To a solution of activated DOPE (or DSPE) (A-L) (33μmol) in N.N-dimethylformamide (1 ml) 30 μmol of Sug-S NH2 (F-S1-NH2) and 5μl of triethylamine were added. For example, the Sug may be either the aminopropyi glycoside (F-SrNH2) of either GalNAcα1-3(Fucα1-2)Galβ trisaccharide (A-glycotope) (F) or Galα1-3(Fucα1-2)Galβ trisaccharide (B-glycotope) (F). The mixture was stirred for 2 h at room temperature. Column chromatography (Sephadex LH- 20 in 1:1 chloroform-methanol followed by silica gel in ethyl acetate-isopropanol-water, 4:3:1 (v/v/v) of the mixture typically yielded 85-90% of the synthetic molecule construct, for example, Aw-sp-Ad-DOPE (I) or Bw-sp-Ad-DOPE (VI). 1H NMR (CDCIs/CDaOD, 1:1), δ:
Aw-sp-Ad-DOPE (I) - 5.5 (m, 4H, 2χ(-CH=CH-), 5.43-5,37 (m, 2H, H-1 (GalNHAc) and -OCH2- CHO-CH2O-), 5.32 (d, 1H, H-1, J=3.5 H-1 Fuc), 2.50 (m, 4H, 2x(-CH2-CO), 2.40 (m, 4H, COCH2CH2CH2CH2CO), 2.20 (m, 8H,
Figure imgf000051_0001
2.1 (s, 3H, NHAc), 1.92 (m, 2H, 0-CH2CHb>CH2-NH), 1.8 (m, 8H, COCH2CH2CH2CH2CO and 2x(COCH2CHr), 1 ,43, 1.47 (2 bs, 40H, 20 CH2), 1.40 (d, 3H, J= 6.6, CH3 Fuc), 1.05 (m, 6H, 2 CH3).
Aω-spsprAd-DOPE (II) - 5.5 (m, 4H, 2χ(-CH=CH-), 5.43-5,37 [m, 2H, H-1 (GalNHAc) and - OCH2-CHO-CH20-], 5.32 (d, 1H, H-1, J=3.6 H-1 Fuc), 2.50 (m, 4H, 2x(-CHa-CO), 2.40- 2.32 (m, 6H, COCH2CH2CH2CH2CO and COCH2- (sp^, 2.18 [m, 8H, 2χ(-CH2-CH=CH-CH )], 2.1 (s, 3H, NHAc), 1.95(m, 2H, O-CH2CH2CH2-NH), 1.8 [m, 10H, COCHzCIHaCHgCHzCO, 2x(COCH2CHr...), -COCH2CH2 (CH2)3NH-], 1.68 (m, 2H, CO(CH2)3CH2CH2NH-), 1,43, 1.47 (2 bs, 42H, 22 CH2), 1.37 (d, 3H, J=5.6, CH3 Fuc), 1.05 (m, 6H, 2 CH3).
Aw-sp-Ad-DSPE (III) - 5.42-5.38 (m, 2H, H-1 (GalNHAc) and -OCH2-CHO-CH20-), 5.31 (d, 1H, H-1, J=3.5 H-1 Fuc), 2.48 [m, 4H, 2χ(-CH2-CO)], 2.42 (m, 4H, COCHgC^CH∑CHgCO), 2.18 (s, 3H, NHAc), 1.95 (m, 2H,
Figure imgf000051_0002
and 2x(COCH CH2-)], 1,43, 1.47 (2 bs, 56H, 28 CH2), 1.38 (d, 3H, J=6.6, CH3 Fuc), 1.05 (m, 6H, 2 CH3).
Bw-sp-Ad-DOPE (VI) - 5.5 (m, 4H, 2χ(-C l=CH-), 5.42-5,38 [m, 2H, H-1 (Gal) and -OCH2-CHO- CH20-], 5.31 (d, 1H, H-1, J=3.7, H-1 Fuc), 2.48 [m, 4H, 2χ(-CH2-CO)], 2.39 (m, 4H, COCH2CH2CH2CH2CO), 2.18 [m, 8H, 2x(-CH CH=CH-CHa-)j, 1.93 (m, 2H, 0-CH2Ch CH2- NH), 1.8 [m, 8H,
Figure imgf000051_0003
and 2χ(COCH2CH2-)J, 1,43, 1.47 (2 bs, 40H, 20 CH2), 1.36 (d, 3H, J=6.6, CH3 Fuc), 1.05 (m, 6H, 2 CH3). Hw-sp-Ad-DOPE (VII) - 5.5 [m, 4H, 2χ(-CH=CH-)], 5.4 (m, 1H, -OCH2-CHO-CH20-), 5.35 (d, 1H, H-1 , J=3.2, H-1 Fuc), 4.65, 4.54 (2d, J=7.4, J=8.6, H-1 Gal, H-1 GlcNHAc), 4.46 (dd, 1H J=3.18, J=12, -CCOOHCH-CHO-CH2O-), 4.38-4.28 (m, 2H, H-5 Fuc, CCOOHCH-CHO-CH20- ), 2.48 [m, 4H, 2χ(-Ct_2-CO)], 2.40 (m, 4H, COChkCHzCHaCH^CO), 2.18 [m, 8H, 2x(-CH2- CH=CH-CHg-)], 2.08 (s, 3H,NHAc), 1.92 (m, 2H, 0-CH2CHaCH2-NH), 1.82-1.72 [m, 8H, COCHzCHaCtbCHzCO and 2χ(COCH2CJH2-)], 1,48, 1.45 (2 bs, 40H, 20 CH2), 1.39 (d, 3H, J=6.5, CH3 Fuc), 1.05 (m, 6H, 2 CH3). Hdi-sp-Ad-DOPE (VIII) - 5.49 (m, 4H, 2χ(-CH=CH-), 5.37 (m, 1 H, -OCH2-CHO-CH20-), 5.24 (d, 1 H, H-1 , J=2.95, H-1 Fuc), 4.46 (d, J=7.34, H-1 Gal), 2.48 [m, 4H, 2χ(-CHa-CO)], 2.42-2.35 (m, 4H, COCHgCHzCHzCiiCO), 2.17 [m, 8H, 2χ(-CH -CH=CH-CH )], 1.95 (m, 2H, O- CH^HgCHz-NH), 1.81-1.74 [m, 8H, COCH2CH2CH2CH2CO and 2x(COCH2CH2-)], 1 ,45, 1.41 (2 bs, 40H, 20 CH2), 1.39 (d, 3H, J=6.5, CH3 Fuc), 1.03 (m, 6H, 2 CH3).
Galβ-sp-Ad-DOPE (IX) - 5.51 [m, 4H, 2χ(-CH=CH-)], 5.4 (m, 1 H, -OCH2-CHO-CH20-), 4.61 (dd, 1H J=3.18, J=12, -CCOOHCH-CHO-CH20-), 4.41 (d, J=7.8, H-1 Gal), 4.37 (dd, 1 H, J=6.6, J=12, -CCOOHCH-CHO-CH2O-), 2.50 [m, 4H, 2χ(-CHrCO)], 2.40 (m, 4H, COCHaCHzCHzCHaCO), 2.20 [m, 8H, 2x(-CH2-CH=CH-CHr)], 1.97 (m, 2H, O-CH2CH2CH2- NH), 1.82-1.72 [m, 8H, COCH2CH2CH2CH2CO and 2χ(COCH2CH2-)], 1,48, 1.45 (2 bs, 40H, 20 CH2), 1.05 (m, 6H, 2 CH3).
Example 2 - Solubility of synthetic glycolipids
For use in the transformation of cells the first criterion that synthetic glycolipids must satisfy is that they are soluble in aqueous solvents, e.g. phosphate buffered saline. A number of techniques, including heat and/or sonication, were employed initially in order to maximise the solubility of the synthetic glycolipids tested (Table 21).
The synthetic glycolipid must also be able to insert into the membrane and be recognisable to the appropriate antibody for transformation to be detected by agglutination. Initial tests on the molecules were to establish solubility and thus eliminate those molecules that were unsuitable for use in the transformation of cells.
The results of these initial tests are provided in Table 22. Table 21. The range of synthetic glycolipid molecules tested.
DOPE Lipid Tails:
Figure imgf000053_0001
Aw-sp-Ad-DOPE (I)
Figure imgf000053_0002
Htn-sp-Ad-DOPE (VII) Atπ-spspι-Ad-DOPE (II) Btπ-PAA-DOPE (V)
Different Lipid Tails: Atri-sp-lipid (IV) Atπ-sp-Ad-DSPE (III)
Table 22. Solubility of synthetic glycolipids in hot PBS and transformation ability.
Synthetic Water solubility Detectable transformation ability Atπ-sp-lipid (IV) No No Bw-PAA-DOPE (V) No No Bw-sp-Ad-DOPE (VI) Yes Yes Aw-sp-Ad-DOPE (I) Yes Yes Galβ-sp-Ad-DOPE (IX) Yes No Hdrsp-Ad-DOPE (VIII) Yes No Hw-sp-Ad-DOPE (VII) Yes Yes
Atr,-spspi-Ad-DOPE (II) Yes Yes
Aw-sp-Ad-DSPE (III) Yes Yes
The lack of detectable transformation for Galβ-sp-Ad-DOPE (IX) and Hdi-sp-Ad-DOPE (VIII) was thought to be due to the inability of the antibody to recognise the glycotope of these synthetic molecules. Aw-sp-lipid (IV) has a single rather than a diacyl tail and it was proposed that there was no insertion of this synthetic molecule into the membrane bilayer.
Example 3 - Low temperature transformation of RBCs by Atri-sp-Ad-DOPE (I) and Btrι-sp- Ad-DOPE (VI) synthetic glycolipids
RBCs are healthier when stored at 4°C, and likewise are believed to be healthier when transformed at 4°C. It was not thought that a significant rate of insertion of the synthetic glycolipids would occur at 4°C due to our previous studies (see Comparative Examples) and studies by others (Schwarzmann, 2000). These studies were performed with natural glycolipids. Surprisingly these studies did not predict the behaviour of the synthetic glycolipids of the invention.
Whilst not wishing to be bound by theory, in the studies of Schwarzmann the low rate of insertion of the natural glycolipids may be due to the physicochemical properties of the natural glycolipid tail; a sphingolipid and a fatty acid.
The diacyl tail of the glycolipid may be important in determining the rate of insertion. Certain diacyl tails may retain greater fluidity at lower temperatures. Alternatively, the domain of the plasma membrane into which the diacyl tail of these glycolipids inserts may retain this greater fluidity.
It is known that the sphingolipid tails of natural glycolipids congregate in rigid domains and these domains may not allow further incorporation of glycolipid at low temperatures. Synthetic glycolipids with c/s-desatu rated diacyl tails may be favoured for use.
Transformation of RBCs with synthetic glycolipids with different lipid tails was first evaluated (Tables 22 and 24).
Table 23. Antisera used to obtain results presented in Tables 24 to 27. Anti-A
Manufacturer Catalogue ref Batch number Expiry date
Albaclone, SNBTS Z0010770 12.12.04
BioClone, OCD Experimental reagent 01102 -
Anti-B
Manufacturer Catalogue ref Batch number Expiry date
Albaclone, SNBTS Z0110600 27.04.03
BioClone, OCD Experimental reagent 01103 -
Table 24. Evaluation of insertion of different lipid tails by agglutination with the relevant antisera. Anti-
Molecule Transformation solution (μ -g/mL) sera 1000 500 250 125 100 60 50 40 30 20 10
Aw-sp-Ad-DOPE (1) Alba w+ w+ 0 0 0 Bio 2+ 1 + w+ 0 0 2- Alba 4+ 3+ 2+ 3+ Bio 4+* 4+* 3+* 3+ DBA 0
Bw-sp-Ad-DOPE (VI) Alba 3+ Bio 3+ Alba 2+ 2+ 1 + 0 0 Bio 3+ 2+ 1 + 0 0
Aw-spspi-Ad-DOPE (II) Alba 0 0 0 0 0 Bio 0 0 0 0 0 Alba 4+ 3+ 2+ 2+ 3- Bio 4+* 3+* 2+ 4+* DBA 0
Aw-sp-lipid (IV) Alba 0 Bio 0
Aw-sp-Ad-DSPE (III) Alba 0 0 0 0 0 Bio 0 0 0 0 0 2- Alba 2-3+ 2+ 2+ 3+ Bio 3+ 2-3+ 2+ 2+ DBA 0 * - splatter.
Transformation of RBCs with synthetic glycolipids Aw-sp-Ad-DOPE (I) and Bw-sp-Ad-DOPE (VI) at 4°C was then evaluated (Tables 25 to 28). These transformations were directed towards the preparation of cells expressing low levels of A, B or A and B glycotopes ("weak A, B and AB cells"). '
For the preparation of weak A and B cells transformation solutions (20 μL, Aw-sp-Ad-DOPE (I) at 0.08, 0.05 and 0.03 mg/mL, and Bw-sp-Ad-DOPE (VI) at 0.6, 0.3, 0.15, 0.08, 0.05 and 0.03 mg/mL) in 1 x PBS were mixed with washed, packed group O RBCs (60 μL).
For the preparation of weak AB cells transformation solutions (20 μL, Aw-sp-Ad-DOPE (1) at 0.07, 0.06 and 0.05 mg/mL, and Bw-sp-Ad-DOPE (VI) at 0.3, and 0.2 mg/mL) in 1 x PBS were combined in block titre with washed, packed group O RBCs (60 μL). The combinations were: Aw-sp-Ad-DOPE (I) at 0.07 mg/mL + Bw-sp-Ad-DOPE (VI) at 0.3 mg/mL; Aw-sp-Ad-DOPE (I) at 0.07 mg/mL ÷ Bw-sp-Ad-DOPE (VI) at 0.2 mg/mL; Aw-sp-Ad-DOPE (I) at 0.06 mg/mL + Bw-sp- Ad-DOPE (VI) at 0.3 mg/mL; Aw-sp-Ad-DOPE (I) at 0.06 mg/mL + Bw-sp-Ad-DOPE (VI) at 0.2 mg/mL; Aw-sp-Ad-DOPE (I) at 0.05 mg/mL + Bw-sp-Ad-DOPE (VI) at 0.3 mg/mL; and Aw-sp- Ad-DOPE (I) 0.05 + Bw-sp-Ad-DOPE (VI) 0.2 mg/mL.
Cells and transformation solutions were placed in a 4CC fridge. Pipette mixing was performed at intervals. Cells were removed for testing at intervals against the relevant antisera and were tested in both washed and unwashed states (i.e. washed samples had the transformation solution removed).
After 48 hours Celpresol™ was added to the cells so that the final cells:non-cells ratio was 3:5 (v/v). The cells continued to be tested at intervals. Testing was discontinued after 10 days because cells turned brown.
This discolouration could be attributed to a number of factors including: cells were already 21 days old when transformed; 48 hour transformation was in PBS not Celpresol™ so cells stressed for this time; and cells may have been mishandled in transit between the transforming and testing laboratories. This may be mitigated by transformation of the cells in Celpresol™ as opposed to PBS.
Table 25. Diamed results of weak A RBCs transformed at 4°C against anti-A. Aw-sp-Ad-DOPE (1) (mg/mL)
Time Washed unwashed 0.08 0.05 0.03 0.08 0.05 0.03
2 hrs 0 0 0 0 0 0
4 hrs 1 + 0 0 2+ 0 0
6 hrs 2+ 0 0 2+ 0 0
8 hrs 2+ 0 0 2-3+ 0 0
12 hrs 2-3+ 0 0 3+ 1 + 0
24 hrs 3-4+ 1 + 0 3-4+ 2+ 0
30.5 hr 3-4+ 1 + 0 3-4+ 2+ 0
48 hrs 4+ 2+ 0 4+ 2+ 0
72 hrs 4+ 2+ 0 4+ 2-3+ 0
96 hrs 4+ 2-3+ 0 4+ 2-3+ 0
Day 7 3-4+ 2+ 0
Day 10 3-4+ 2+ 0 Table 26. Diamed results of weak B RBCs transformed at 4°C against anti-B. Bw-sp-Ad-DOPE (VI) (mg/mL) Time washed unwashed 0.6 0.3 0.15 0.6 0.3 0.15 2 hrs 0 0 0 0 0 0 4 hrs 0 0 0 1 + 0 0 6 hrs w+ 0 0 1+ 0 0 8 hrs 2+ 0 0 2+ w+ 0 12 hrs 2+ w+ 0 2-3+ 2+ 0 24 hrs 4+ 3+ 2+ 4+ 3+ 2+ 30.5 hr 4+ 2-3+ 0 4+ 2-3+ w+ 48 hrs 4+ 3+ 1 + 4+ 3+ 2+ 72 hrs 4+ 4+ 2+ 4+ 4+ 2+ 96 hrs 4+ 3-4+ 2-3+ 4+ 3-4+ 2-3+ Day 7 4+ 2-3+ 0 Day 10 4+ 2+ - 0
Table 27. Diamed results of weak AB RBCs transformed at 4°C in block titre against anti-A. Bw-sp-Ad- Aw-sp-Ad-DOPE (I) (mg/mL)
Day DOPE (VI) washed unwashed (mg/mL) 0.07 0.06 0.05 0.07 0.06 0.05
1 0.3 2+ 1-2+ w+ 2-3+ 2+ 1 + 0.2 2+ 1-2+ 0 2-3+ 2+ 1+
5 0.3 2+ 1-2+ 1 + 2-3+ 2+ 1-2+ 0.2 2+ 1-2+ w+ 2-3+ 2+ 1-2+
8 0.3 2-3+ 2+ 2+ 0.2 2-3+ 2+ 1-2+
Table 28. Diamed results of weak AB RBCs transformed at 4°C in block titre against anti-B. Bw-sp-Ad- Aw-sp-Ad-DOPE (I) (mg/mL)
Day DOPE (VI) washed unwashed (mg/mL) 0.07 0.06 0.05 0.07 0.06 0.05
1 0.3 3+ 3+ 2+ 3+ 3+ 2-3+ 0.2 1 + 1-2+ 0 2+ 2+ 1-2+
5 0.3 2+ 2+ 1 + 2+ 2+ 2+ 0.2 0 w+ vw 1+ w+ vw 0.3 2+ 2+ 2+ 0.2 1+ ' 1 + 0 Example 4 - Insertion efficiency of transformation of RBCs by Atrrsp-Ad-DOPE (I) and Btri-sp-Ad-DOPE (VI) synthetic glycolipids
The post-transformation supernatant solutions (from Aw-sp-Ad-DOPE (I) at 0.08 mg/mL, 0.05 mg/mL and 0.03 mg/mL, and Bw-sp-Ad-DOPE (VI) at 0.6 mg/mL, 20 μL) were added neat and in a 1:2 dilution to washed, packed RBCs (60 μL). The tubes were incubated in a 37°C waterbath for one hour, with mixing taking place every 15 minutes.
The transformed RBCs were washed 3x with PBS and then suspended in Cellstab™ at the appropriate concentration for serology testing.
Table 29. Tube serology Pre-trans cone (mg/mL) Score Aw-sp-Ad-DOPE (I) at 0.08 0 1 :2 ofAtπ-sp-Ad-DOPE (l) 0 at 0.08 Aw-sp-Ad-DOPE (I) at 0.05 0 1 :2 ofAtr,-sp-Ad-DOPE (l) 0 at 0.05 Atrrsp-Ad-DOPE (I) at 0.03 0 1:2 ofAtπ-sp-Ad-DOPE (l) 0 at 0.03 Bw-sp-Ad-DOPE (VI) at vw+ 0.60
Figure imgf000058_0001
(VI) at 0.60
The score given by the post-transformation supernatant solution (from the 0.08 mg/mL pre- transformation solution) is not even that of the 0.03 mg/mL transformation solution in the first pass (w+). These results indicate that >75% of the molecules are inserted into the RBC membrane on the first pass.
In addition, the post-transformation solutions were concentrated 20x and compared in parallel with the transformation solutions of known concentration. Only the post-transformation solutions derived from the 0.08 mg/mL Aw-sp-Ad-DOPE (I) and 0.6 mg/mL Blri-sp-Ad-DOPE (VI) solutions were tested.
Post-transformation solutions (20 μL) were dialysed (pore size 500Da) against de-ionised water for 2 days. The samples were left to dry in a fumehood for 10 days. At the end of this time they were transferred into a rotavapor flask and set on the rotavapor to rotate under vacuum with no heat overnight. Samples were dried in a water bath at 40°C and washed over into smaller vessels with chloroform-methanol 2:1 leaving significant amounts of dried cellular material. The chloroform- methanol 2:1 washings were dried down, washed over again into test-tubes with chloroform- methanol 2:1 and dried down. These samples were redissolved in 1 mL of 1 x PBS and used for transformation experiments. The cellular material in the bottom of the flasks was washed out with water into another set of tubes.
The post-transformation solutions (from Aw-sp-Ad-DOPE (I) at 0.08 mg/mL and Bw-sp-Ad- DOPE (VI) at 0.6 mg/mL, 20 μL) were added to washed, packed RBCs (60 μL). In parallel, the transformation solutions (Aw-sp-Ad-DOPE (I) at 0.08 mg/mL, 0.05 mg/mL and 0.03 mg/mL, and Bw-sp-Ad-DOPE (VI) at 0.6 mg/mL, 20 μL) were added to washed, packed RBCs (60 μL).
The tubes were incubated in a 37°C waterbath for one hour, with mixing taking place every 15 minutes. The transformed RBCs were washed 3x with PBS and then suspended in Cellstab™ at the appropriate concentration for serology testing.
Table 30. Diamed serology cone (mg/mL) Score Aw-sp-Ad-DOPE (1) at 3+ 0.08 Aw-sp-Ad-DOPE (1) at 2+ 0.05 Aw-sp-Ad-DOPE (1) at 1 + 0.03 From Aw-sp-Ad- 0 DOPE (1) at 0.08 Bw-sp-Ad-DOPE (VI) 4+ at 0.60 From Btn-sp-Ad- 0 DOPE (VI) at 0.60
These results suggest that there are not enough molecules in the post-transformation solution, even when concentrated 20x, to be detected by serology.
Example 5 - Transformation of murine RBCs by Htrl-sp-Ad-DOPE (VII) synthetic glycolipid
Mouse cells were transformed at 37°C for 1 hour. Table 31. Anti-H reagents used for results in Tables 32 and 33. Antisera Manufacturer Batch Anti-H IgM Japanese Red Cross HIRO-75 UEA Lome Laboratories 11549E D.O.E. 06.2004 Bio-UEA EY Labs 201105-2
Table 32. Tube Serology. H Antisera Cells IgM UEA Bio-UEA T = 0 T = 20 Mouse RBCs (- control) 0 0 0 Mouse RBCs + 0.01 mg/mL Hw-sp-Ad- 0 DOPE (VII) Mouse RBCs + 0.05 mg/mL Hw-sp-Ad- 1+ DOPE (VII) Mouse RBCs + 0.1 mg/mL Hw-sp-Ad- 3+ DOPE (VII) Mouse RBCs + 0.25 mg/mL Htπ-sp-Ad- 4+ 1 + DOPE (VII) Mouse RBCs + 1 mg/mL Htπ-sp-Ad-DOPE 2+ 2+ (VII) Human O RBCs (+ control) 4+ 1+ 2/3+ 4+
Table 33. Diamed Cells Score Mouse RBCs + 0.01 mg/mL Hw-sp-Ad-DOPE (VII) Mouse RBCs + 0.05 mg/mL Hw-sp-Ad-DOPE (VII) Mouse RBCs + 0.1 mg/mL Htπ-sp-Ad-DOPE (VII) 2+ Mouse RBCs + 0.25 mg/mL Hw-sp-Ad-DOPE 3+ (VII)
Example 6 - Transformation of RBCs by filtered Atri-sp-Ad-DOPE (I) synthetic glycolipid
Some Aw-sp-Ad-DOPE (I) had been sterile-filtered through a 0.2 μm filter. To investigate whether transformation would be the same with this product a comparative trial was done.
Table 34. Anti-A used for results presented in Table 35.
Manufacturer Catalogue ref Batch number Expiry date
BioClone, OCD Experimental reagent 01102 - Table 35. Column agglutination of A RBCs transformed with varying concentrations of sterile-filtered vs unfiltered Aw-sp-Ad-DOPE (I). Concentration Sterile-filtered Aw-sp-Ad-DOPE (I) Unfiltered Aw-sp-Ad-DOPE (I) (mg/mL) 0.2 4+ 4+ 0.1 4+ 3-4+ 0.05 2-3+ 2-3+ 0.01 0 0 Control 37°C 0 Control 25°C 0
These results show no significant difference between the two preparations of Aw-sp-Ad-DOPE (I) and suggests that filtration through a 0.2 μM filter did not remove molecules or change the composition or properties of the fluid to the point that transformation was affected.
Example 7 - Storage of transformed cells
To investigate whether storage at 4°C or 37°C changed the agglutination results of Aw-sp-Ad- DOPE (I) and natural A glycolipid transformed O RBCs, identified as "Syn-A" and "Nat-A" cells respectively, were divided in two and suspended to 5% in Cellstab™.
One set of cells was stored at 4°C and the other set of cells was stored at 37°C in a waterbath. Agglutination of the stored transformed cells was assessed (Table 36).
Table 36.
Time Syn-A Nat-A Control (hours) Platform Temp Aw-sp-Ad- (°C) DOPE (1) at At 1 mg/mL At 10 mg/mL 0.1 mg/mL 0 Tube 3+ 0 1-2+ 0 20 Column 4 4+ 0 3+ 0 37 4+ 0 3+ 0
44 Column 4 4+ 3+ 0 37 4+ 3+ 0
Example 8 - RBC transformation with A- and B-antigen synthetic glycolipids with different non-carbohydrate structures
The water soluble synthetic glycolipids designated Aw-sp-Ad-DOPE (I), Aw-spisp2-Ad-DOPE (II), Aw-sp-Ad-DSPE (III), and Bw-sp-Ad-DOPE (VI) were prepared according to the method described in Example 1 with necessary modifications.
Washed packed group O red blood cells (RBCs) (3 parts by volume) and the synthetic glycolipid solution (1 part by volume, varying concentrations) were added to an eppendorf tube. The tube was incubated in a 37°C waterbath for one hour, mixing every 15 minutes. The transformed RBCs were washed 3x with PBS and then suspended in Cellstab™ at the appropriate concentration for serology testing. Tube serology and Diamed gel-card results for RBCs transformed with the different synthetic molecule constructs are provided in Table 38. Results for the stability of the RBCs transformed with the different synthetic glycolipids at different concentrations are provided in Tables 39 to 44.
Table 37. Antisera used for results presented in Tables 38 to 44. Antisera Manufacturer Batch Albaclone anti-A SNBTS Z0010770 - D.O.E 12.12.04 Bioclone anti-A Ortho Diagnostics 01102 - D.O.M 16.05.02 Albaclone anti-B SNBTS Z0110670 - D.O.E 12.12.04 Bioclone anti-B Ortho Diagnostics 01103 - D.O.M 16.05.02
Figure imgf000062_0001
Abbreviations: n.d. Not determined
Figure imgf000063_0001
Abbreviations: splatter
Figure imgf000063_0002
Abbreviations: n.d. Not determined splatter
Figure imgf000063_0003
Where there were insufficient cells for testing, blank spaces have been left.
Figure imgf000064_0001
Where there were insufficient cells for testing, blank spaces have been left.
Figure imgf000064_0002
Abbreviations: splatter
Figure imgf000065_0001
Where there were insufficient cells for testing, blank spaces have been left. Example 9 - Red Blood Cell Transformation with H-antigen synthetic glycolipids
The water soluble synthetic glycolipids designated Hw-sp-Ad-DOPE (VII), Hdrsp-Ad-DOPE (VIII) and Galβ-sp-Ad-DOPE (IX) were prepared according to the method described in Example 1 with necessary modifications.
Washed packed mouse RBCs (3 parts by volume) and the synthetic glycolipid solutions (1 part by volume of varying concentrations) were added to an eppendorf tube. The tube was incubated in a 37°C waterbath for one hour, mixing every 15 minutes. The transformed RBCs were washed 3x with PBS and then suspended in Cellstab™ at the appropriate concentration for serology testing.
Tube serology and Diamed gel-card results for RBCs transformed with the different synthetic glycolipids are presented in Table 46. The results show that three sugars (Hw) are required for detection by anti-H IgM, at least by the reagent used.
Table 45. Antisera used for results presented in Table 46. Antisera Manufacturer Batch Anti-H IgM Japanese Red Cross HIRO-75 UEA Lome Laboratories 11549E D.O.E. 06.2004 Bio-UEA EY Labs 201105-2
Figure imgf000066_0001
Abbreviations: n.d. Not determined
Example 10 - Insertion of Hd,-sp-Ad-DOPE (VIII) and Galβ-sp-Ad-DOPE (IX) synthetic glycolipids into murine red blood cells
The water soluble synthetic glycolipids designated Hdi-sp-Ad-DOPE (VIII) and Galβ-sp-Ad- DOPE (IX) were prepared according to the method described in Example 1 with necessary modifications.
Murine RBCs were washed 3x in 1x PBS. 30μl of packed RBCs were combined with 30μl of Hdi-sp-Ad-DOPE (VIII), and 30μl of packed RBCs were combined with 30μl Galβ-sp-Ad-DOPE (IX), respectively. Both synthetic molecule constructs were at a concentration of 1.0 mg/ml. 30μl of 1x PBS was added to 30μl of packed RBCs to act as the control group. Cells were incubated for 90 minutes in a 37°C shaking water-bath. RBCs were washed 3x in 1x PBS.
Three groups of packed RBCs were incubated with an equal volume of lectin UEA-1 for 30 minutes at room temperature. The lectin was prepared in 1x PBS at a concentration of 0.1 mg/ml. 50μl of a 3% cell suspension was spun for 15 seconds in an Immunofuge at low speed. Results were read by tube serology. The results are presented in Table 48. The results show that neither anti-H IgM nor UEA-1 detects two sugars (Hdι).
Table 47. Antisera used for results presented in Table 48.
Antisera Manufacturer Batch Biotest anti-H Biotest AG UEA EY Labs 201105-2 Table 48. Murine RBCs transformed with Galβ-sp-Ad-DOPE or Hdi-sp-Ad-DC PE, assessed by agglutination. Cell Type Inserted Molecule UEA-1 Mouse IgM" Murine RBC Galβ (1mq/m!) 0 n.d. Murine RBC Hdi d mg/ml) 0 0 Murine RBC Control (PBS) 0 0 Human RBC Control(PBS) 4+ 3+ Abbreviations: n.d. Not determined Example 11 - Preparation of sensitivity controls
The synthetic glycolipids of the invention may be used in the preparation of "sensitivity controls" (also referred to as "quality control cells", "serology controls", or "process controls") as described in the specification accompanying international application no. PCT/NZ02/00214 (WO 03/034074). The synthetic glycolipids provide the advantage that the transformation of the RBCs may be achieved at reduced temperatures.
RBC transformation solutions Two stock solutions are used: Solution 1: 1 mg/mL Atn-sp-Ad-DOPE (I) suspended in Celpresol™ solution. Solution 2: 5mg/mL Bw-sp-Ad-DOPE (VI) suspended in Celpresol™ solution.
Glycolipids are manufactured in a white dry powder. Glycolipids in this form (enclosed in a sealed container under a controlled temperature) are stable for an indefinite period of time. The glycolipids are suspended in solution (e.g. Celpresol™) by weight in order to formulate the transformation solutions.
Once the transformation solutions are received at CSL, they are filtered (through a MILLEX®- GV 0.22 μ filter unit) under aseptic conditions.
Processing of RBCs
RBC donations are processed using a continuous flow centrifuge washer under aseptic conditions. RBC donations are washed in buffered saline followed by Celpresol™ solution. The PCV of the RBC donations is measured on a Beckman Coulter AcT Diff analyser. The donations are then adjusted to a packed cell volume (PCV) of 50% with the addition of Celpresol™.
Transformation of RBCs to provide "weakAB cells"
RBCs are washed in buffered saline and Celpresol™. The cells are suspended in Celpresol™ solution to a PCV of > 50%. The PCV of red cells is measured using a Beckman Coulter AcT Diff. The mass of the red cell solution is weighed.
The amount of Aw-sp-Ad-DOPE (I), Bw-sp-Ad-DOPE (VI) and Celpresol™ for transformation is calculated using the following equations: a = P x F S b = P x F S c = P - (1 - P) - a - b where a = amount of Aw-sp-Ad-DOPE (I) to be added per 1 mL of red cells (mL) b = amount of Bw-sp-Ad-DOPE (VI) to be added per 1 mL of red cells (mL) c = amount of Celpresol™ to be added per 1mL of red cells (mL) to dilute cells to 50% PCV P = PCV of red cell solution F = Final desired concentration of glycolipid S = Concentration of stock glycolipid solution
To determine the amount of glycolipid and Celpresol™ to add to a bulk sample of red cells, multiply each of a, b and c by the red cell volume. Add Aw-sp-Ad-DOPE (I), Bw-sp-Ad-DOPE (VI) and Celpresol™ to the red cell bulk sample aseptically.
Incubate the sample for 3 hours at 20°C under controlled temperature conditions and constant gentle agitation. At the end of the 3 hour period, aseptically remove a sample of red cells and test the sample to confirm transformation of the RBCs. Perform blood grouping using tube, tile and column agglutination technology (CAT) techniques.
Incubate the red cell sample for 3 hours at 2-8°C under controlled temperature conditions and constant gentle agitation for 18 hours. At the end of the 3 hour period, aseptically remove a sample of red cells and test the sample to confirm transformation of the red cells. Perform blood grouping using tube, tile and CAT techniques.
Wash the transformed red cells using a continuous flow centrifuge method, under aseptic conditions using Celpresol™ solution. Measure the PCV of the washed red cells and adjust to 50% PCV by the addition of Celpresol™ solution.
Formulation and dispensing Aseptically combine a volume of the transformed RBCs with a volume of simulated plasma diluent (SPD). The plasma may contain monoclonal and polyclonal antibodies. Antibodies are selected according to the desired characteristics of the sensitivity controls. The plasma may additionally contain tartrazine and bovine serum albumin.
Blood grouping and antibody screening is performed on the bulk samples using tube, tile and CAT techniques. The transformed RBC-SPD blend is then aseptically dispensed into BD Vacutainer tubes and the tubes labelled accordingly.
Validation testing Weak AB cells produced by the use of synthetic glycolipids (designated AWBW in Tables 51 to 53) were used to validate a range of testing platforms in parallel with naturally occurring weak A, weak B and weak AB cells. Table 49. Reagents and cards used in validation testing. Method Reagent Tube Epiclone Tile Epiclone Ref Manufacturer and type Batch Expiry CAT 1 OCD BioVue ABD/Rev ABR528A 16.06.05 CAT 2 OCD BioVue ABD/Rev ABR521A 06.05.06 CAT 3 OCD BioVue ABD/ABD ACC255A 24.05.05 CAT 4 Diamed ID-MTS 50092.10.02 Apr-05 CAT 5 Diamed ID-MTS Donor typing 51051.05.04 Mar-05 CAT 6 Diamed ID-MTS Recipient typing 50053.07.02 Apr-05 CAT 7 Diamed ID-MTS Cord typing 50961.08.03 Jul-05 Table 50. Testing platform methodology for validation testing. Tile 1 drop 3% cells, 2 drops reagent, 15 min @ RT in moist chamber. Tube 2 drops ® RT, 10 min ID-MTS As per manufacturers instructions using Dil-2 BioVue As per manufacturers instructions using 0.8% RCD.
Figure imgf000069_0001
Figure imgf000070_0001
Example 12 - Attachment of Modified Embryos to Transformed Endometrial Cells
The ability to effect qualitative and quantitative differences in the cell surface antigens expressed by cell types other than RBCs was investigated. The ability to enhance the adhesion of embryos to endometrial cells was adopted as a model system. The synthetic molecules may be used as synthetic membrane anchors and/or synthetic molecule constructs. Therefore, they may also be employed in the method of enhancing embryo implantation as described in international patent application no PCT/NZ2003/000059 (published as WO 03/087346) which is incorporated by reference.
• Endometrial Cell Transformation
Insertion of water soluble synthetic molecule construct A single cell suspension of endometrial epithelial cells was prepared. The endometrial cells were washed 3x by resuspending in CMF HBSS and centrifuging at 2000 rpm for 3 minutes. The washed cell preparation was resuspended in 50μl of M2.
Micro-centrifuge tubes each containing a 50μl solution of 5M/ml endometrial cells were prepared. To separate tubes of endometrial cells 50 μl of synthetic glycolipids Aw-sp-Ad- DOPE (I) or Bw-sp-Ad-DOPE A (VI), or 50 μl M2 were added to the control cells. The cells were incubated for 90 minutes at 37°C on a mixer. The endometrial cells were washed 3x by resuspending in CMF HBSS media and centrifuging at 2000 rpm for 3 minutes. The washed cell preparation was resuspended in 50μl of M2. Test For Insertion Using Fluorescent Probe: 50 μl of corresponding primary murine monoclonal antibody was added to each tube. Each tube was incubated at room temperature for 10 minutes. Cells were washed 3x in M2 media. 10 μl of mouse anti-lgG FITC was added to each tube. Tubes were incubated at room temperature in dark conditions for 10 minutes. Endometrial cells were mounted on glass slides and viewed under a fluorescence microscope.
Test for Direct Agglutination: 5 μl of each group of cells was placed onto separate microscope slides. To each 5μl drop of cells 5 μl of a corresponding antibody was added. The cells were gently mixed on the slide for 2 minutes. Agglutination was visualised under the microscope. The results are presented in Table 55. Table 54. Antisera used for results presented in Table 55. Antisera Manufacturer Bioclone anti-A Ortho Diagnostics 01102 D.O.M. 16.05.02 Bioclone anti-B Ortho Diaqnostics Developmental reagent
Figure imgf000071_0001
Embryo Modification Insertion of water soluble synthetic molecule construct: The embryo zona pellucida was removed by treating embryos with 0.5% pronase in a 37°C oven for 6 minutes or until all zonas were removed. Micro-drops were prepared by adding 5μl of synthetic glycolipid Aw-sp-Ad-DOPE (i) or Bw-sp-Ad-DOPE (VI), at a concentration of 1 mg/mL to a 45μl drop of M2 media overlaid with mineral oil. All embryo groups were incubated in the 50μl micro-drops for 1 hour at 37°C. Embryos from experimental and control groups were washed 3x with M2 media.
Test for Insertion: Embryos from experimental and control groups were placed into a micro-drop of corresponding antibody and incubated for 30 min at 37°C. Embryos from experimental and control groups were washed 3x with M2 media.
Embryos from all experimental and control groups were placed into micro-drops of anti-mouse Ig FITC (1 :50 dilution anti-mouse Ig FITC in M2) and incubated for 30 min at 37°C. Embryos from experimental and control groups were washed 3x with M2 media. Embryos were mounted on microscope slides in a 5μl drop of M2 and the drops overlaid with oil.
The slides were viewed under a fluorescence microscope. Results are presented in Tables 56 and 57. The negative result for transformation with Bw-sp-Ad-DOPE (VI) is attributed to a lack of 1° antibody sensitivity.
Figure imgf000072_0001
Figure imgf000072_0002
Abbreviations: n.d. Not determined
Enhanced Attachment Transformed Endometrial Cells to Modified Embryos Modified embryos (BioG-Avidin-BiolgGB and BioG-Avidin-BiolgMA) were prepared in accordance with the methods described in the specification accompanying the international application no. PCT/NZ03/00059 (published as WO03/087346).
Two concave glass slides were prepared, one with two wells of synthetic glycolipid Aw-sp-Ad- DOPE (I) inserted endometrial cells and the other with two wells of synthetic glycolipid Bw-sp- Ad-DOPE (VI) inserted endometrial cells.
The two groups of embryos were transferred to each of the concave glass slides:
Slide 1 Aw/lgGB embryos Aw/lgMA embryos
Slide 2 Bw/lgG embryos Btri/lgMA embryos
The embryos were surrounded with endometrial cells. The wells were covered with mineral oil and incubated for 15 minutes at 37°C. Using a wide bore handling pipette each group of embryos were carefully transferred to a fresh drop of M2 media. The embryos were gently washed. The embryos were gently transferred into 2μL of M2 media on a marked microscope slide. Each drop was overlaid with mineral oil
Under a central plane of focus on an Olympus microscope the number of endometrial cells adhered to the embryos in each group was assessed. The number of cells adhered to each embryo was recorded. Results are presented in Table 58.
Figure imgf000073_0001
Where in the foregoing description reference has been made to integers or components having known equivalents then such equivalents are herein incorporated as if individually set forth.
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Claims

CLAIMS:
(1 ) A molecule of the structure R-S2-L for use as a synthetic membrane anchor or in the preparation of synthetic molecule constructs where:
R is a chemically reactive functional group; S2 is a spacer linking R to L; and L is a lipid selected from the group consisting of diacyl- and dialkyl- glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyl-lipids, including ceramide.
(2) The molecule of claim 1 where R is selected from the group including: 6/s(N- hydroxysuccinimidyl), Jb/s(4-nitrophenyl), £>/s(pentafluorophenyl), £>/s(pentachlorophenyl).
(3) The molecule of claim 1 or 2 where S2 is selected from the group including: - CO(CH2)3CO-, -CO(CH2)4CO- (adipate (Ad)), and -CO(CH2)5CO-.
(4) The molecule of any one of claims 1 to 3 where R and S2 are ester linked.
(5) The molecule of any one of claims 1 to 4 where L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids.
(6) The molecule according to claim 5 where L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of fraπs-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7-hexadecenoic acid, c/s-9-hexadecenoic acid, c/s-6-octadecenoic acid, c/s-9- octadecenoic acid, frans-9-octadecenoic acid, trans-A -octadecenoic acid, c/s-11- octadecenoic acid, c/s-11-eicosenoic acid or c/s-13-docsenoic acid.
(7) The molecule according to claim 6 where the lipid is derived from one or more c/s- destaurated fatty acids.
(8) The molecule according to claim 7 where L is selected from the group consisting of: 1 ,2- O-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-O-distearyl-sn-glycero- 3-phosphatidylethanolamine (DSPE) and rac-1,2-dioleoylglycerol (DOG).
(9) The molecule according to any one of claims 1 to 8 where L is a glycerophospholipid and the molecule includes the substructure:
Figure imgf000078_0001
where n = 3 to 5 and * is other than H.
(10) The molecule according to claim 9 where n is 3.
(11) The molecule of claim 1 where the molecule has the structure:
Figure imgf000078_0002
designated Ad-DOPE and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(12) The molecule of claim 1 where the molecule has the structure:
Figure imgf000078_0003
designated spi-Ad-DOPE and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(13) The molecule of claim 1 where the molecule has the structure:
Figure imgf000078_0004
designated Ad-DSPE and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(14) A synthetic molecule construct of the structure F-S S2-L where:
F is an antigen selected from the group consisting of carbohydrates, proteins, lipids, lectins, avidins and biotin; - SrS2 is a spacer linking F to L; and L is a lipid selected from the group consisting of diacyl- and dialkyl- glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyl-lipids, including ceramide.
(15) The synthetic molecule construct according to claim 14 where the synthetic molecule construct is water soluble.
(16) The synthetic molecule construct according to claim 14 or 15 where the synthetic molecule construct spontaneously incorporates into a lipid bi-layer when a solution of the synthetic molecule construct is contacted with the lipid bi-layer.
(17) The synthetic molecule construct according to claim 16 where the synthetic molecule construct stably incorporates into the lipid bilayer.
(18) The synthetic molecule construct according to any one of claims 14 to 17 where F, Si, S2 and L are covalently linked.
(19) The synthetic molecule construct according to any one of claims 14 to 18 where F is selected from the group consisting of naturally occurring or synthetic glycotopes, antibodies (immunoglobulins), lectins, avidins, and biotin.
(20) The synthetic molecule construct according to claim 19 where F is selected from the group consisting of naturally occurring or synthetic glycotopes or antibodies (immunoglobulins).
(21 ) The synthetic molecule construct according to any one of claims 14 to 20 where L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids.
(22) The synthetic molecule construct according to claim 21 where L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choline, phosphatidyl ethanolamine, phosphatidyl serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of frans-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7-hexadecenoic acid, c/s-9-hexadecenoic acid, c/s-6- octadecenoic acid, c/s-9-octadecenoic acid, fraπs-9-octadecenoic acid, trans-'l l- octadecenoic acid, c/s-11 -octadecenoic acid, c/s-11-eicosenoic acid or c/s-13-docsenoic acid.
(23) The synthetic molecule construct according to claim 22 where the lipid is derived from one or more c/s-destaurated fatty acids.
(24) The synthetic molecule construct according to claim 23 where L is selected from the group consisting of: 1,2-0-dioleoyl-sn-gIycero-3-phosphatidylethanolamine (DOPE), 1,2- O-distearyl-sn-glycero-3-phosphatidylethanolamine (DSPE) and rac-1,2-dioleoyiglycerol (DOG).
(25) The synthetic molecule construct according to any one of claims 14 to 24 where L is a glycerophospholipid and the synthetic molecule construct includes the substructure:
Figure imgf000080_0001
where n = 3 to 5, X is H or C, and * is other than H.
(26) The synthetic molecule construct according to claim 25 where n is 3.
(27) The synthetic molecule construct according to any one of claims 14 to 24 where Sι-S2 is selected to provide a water soluble synthetic molecule construct.
(28) The synthetic molecule construct according to any one of claims 14 to 27 where F is a naturally occurring or synthetic glycotope.
(29) The synthetic molecule construct according to claim 28 where F is a naturally occurring or synthetic glycotope consisting of three (trisaccharide) or more sugar units.
(30) The synthetic molecule construct according to claim 28 where F is a glycotope selected from the group consisting of lacto-neo-tetraosyl, lactotetraosyl, lacto-nor-hexaosyl, lacto- iso-octaosyl, globoteraosyl, globo-neo-tetraosyl, globopentaosyl, gangliotetraosyl, gangliotriaosyl, gangliopentaosyl, isoglobotriaosyl, isoglobotetraosyl, mucotriaosyl and mucotetraosyl series of oligosaccharides.
(31) The synthetic molecule construct according to claim 28 where F is selected from the group of glycotopes comprising the terminal sugars GaINAcα1-3(Fucα1-2)Galβ; Galαl- 3Galβ; Galβ; Galα1-3(Fucα1-2)Galβ; NeuAcα2-3Galβ; NeuAcα2-6Galβ; Fucαl -2Galβ; Galβ1-4GlcNAcβ1-6(Galβ1-4GlcNAcβ1-3)Galβ; Fucα1-2Galβ1-4GlcNAcβ1-6(Fucα1- 2Galβ1 -4GlcNAcβ1 -3)Galβ; Fucαl -2Galβ1 -4GlcNAcβ1 -6(NeuAcα2-3Galβ1 - 4GlcNAcβ1-3)Galβ; NeuAcα2-3Galβ1-4GlcNAcβ1-6(NeuAcα2-3GaIβ1-4GlcNAcβ1- 3)Galβ; Galα1-4Galβ1-4Glc; GalNAcβ1-3Galα1-4Galβ1-4Glc; GalNAcα1-3GalNAcβ1- 3Galα1-4Galβ1-4Glc; or GaINAcβ1-3GalNAcβ1-3Galα1-4Galβ1-4Glc.
(32) The synthetic molecule construct according to any one of claims 14 to 31 where when F is a glycotope, L is a glycerophospholipid and S2 is selected from the group including: - CO(CH2)3CO-, -CO(CH2)4CO- (adipate), -CO(CH2)5CO-, and - CO(CH2)5NHCO(CH2)5CO-.
(33) The synthetic molecule construct according to any one of claims 14 to 32 where Si is a C3-5-aminoalkyl selected from the group consisting of: 3-aminopropyl, 4-aminobutyl, or 5- aminopentyl).
(34) The synthetic molecule construct according to claim 33 where Si is 3-aminopropyl.
(35) The synthetic molecule construct according to any one of claims 14 to 27 where F mediates a cell-cell or cell-surface interaction.
(36) The synthetic molecule construct according to claim 35 where F is carbohydrate, protein, lipid, lectin, avidin or biotin with an affinity for a component expressed on a targeted cell or surface.
(37) The synthetic molecule construct according to claim 36 where F has an affinity for a component expressed on epithelial cells or extra-cellular matrices.
(38) The synthetic molecule construct according to claim 37 where F has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium.
(39) The synthetic molecule construct according to claim 38 where the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
(40) The synthetic molecule construct according to any one of claims 14 to 27 where F mediates a cell-solute interaction.
(41 ) The synthetic molecule construct according to claim 40 where F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition.
(42) The synthetic molecule construct according to claim 41 where F is a ligand for an 81 antibody (immunogiobulin).
(43) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000082_0001
designated Aw-sp-Ad-DOPE (I) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(44) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000082_0002
designated Aw-spsprAd-DOPE (II) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(45) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000083_0001
designated Aw-sp-Ad-DSPE (III) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(46) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure: otfH
Figure imgf000083_0002
designated Bw-sp-Ad-DOPE (VI) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(47) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000083_0003
designated Hw-sp-Ad-DOPE (VII) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(48) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000084_0001
designated Hdi-sp-Ad-DOPE (VIII) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(49) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000084_0002
designated Galβ|-sp-Ad-DOPE (IX) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(50) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000084_0003
designated Fucα1-2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(51) The synthetic molecule construct according to claim 14 where the water soluble synthetic molecule construct has the structure:
Figure imgf000085_0001
designated Fucαl -2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII) and M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(52) A method of preparing a synthetic molecule construct of the structure F-S^S^L including the steps: Reacting an activator (A) with a lipid (L) to provide an activated lipid (A-L); Derivatising an antigen (F) to provide a derivatised antigen (F-Si); and Condensing A-L with F-S1 to provide the construct; where:
A is an activator selected from the group including: £>/s(N- hydroxysuccinimidyl), 6/s(4-nitrophenyl), £>/s(pentafluorophenyl), jb/s(pentachlorophenyl) esters of carbodioic acids (C3 to C7); L is a lipid selected from the group consisting of diacyl- and dialkyl- glycerolipids, including glycerophospholipids, and sphingosine derived diacyl- and dialkyl-lipids, including ceramide. F is an antigen selected from the group consisting of carbohydrates, proteins, lipids, lectins, avidins or biotin; and SrS2 is a spacer linking F to L where Si is selected from the group including: primary aminoalkyl, secondary aliphatic aminoalkyl or primary aromatic amine; and S2 is absent or selected from the group including: - CO(CH2)3CO-, -CO(CH2)4CO- (adipate), and -CO(CH2)5CO-.
(53) The method according to claim 52 where the synthetic molecule construct is water soluble.
(54) The method according to claim 51 or 52 where the synthetic molecule construct spontaneously incorporates into a lipid bi-layer when a solution of the synthetic molecule construct is contacted with the lipid bi-layer.
(55) The method according to claim 54 where the synthetic molecule construct stably incorporates into the lipid bilayer.
(56) The method according to any one of claims 52 to 55 where F, Si, S2 and L are covalently linked.
(57) The method according to any one of claims 52 to 56 where F is selected from the group consisting of naturally occurring or synthetic glycotopes, antibodies (immunoglobulins), lectins, avidins, and biotin.
(58) The method according to claim 57 where F is selected from the group consisting of naturally occurring or synthetic glycotopes or antibodies (immunoglobulins).
(59) The method according to any one of claims 52 to 58 where L is a lipid selected from the group consisting of diacyl- and dialkyl-glycerolipids, including glycerophospholipids.
(60) The method according to claim 59 where L is selected from the group consisting of: diacylglycerolipids, phosphatidate, phosphatidyl choiine, phosphatidyl ethanolamine, phosphatidyl. serine, phosphatidyl inositol, phosphatidyl glycerol, and diphosphatidyl glycerol derived from one or more of tra ?s-3-hexadecenoic acid, c/s-5-hexadecenoic acid, c/s-7-hexadecenoic acid, c/s-9-hexadecenoic acid, c/s-6-octadecenoic acid, c/s-9- octadecenoic acid, fra/7s-9-octadecenoic acid, trans- 11 -octadecenoic acid, c/s-11- octadecenoic acid, c/s-11-eicosenoic acid or c/s-13-docsenoic acid.
(61) The method according to claim 60 where the lipid is derived from one or more c/s- destaurated fatty acids.
(62) The method according to claim 61 where L is selected from the group consisting of: 1 ,2- O-dioleoyl-sn-glycero-3-phosphatidylethanolamine (DOPE), 1 ,2-O-distearyl-sn-glycero- 3-phosphatidylethanolamine (DSPE) and rac-1 ,2-dioleoylglycerol (DOG).
(63) The method according to any one of claims 52 to 62 where L is a glycerophospholipid and the synthetic molecule construct includes the substructure:
Figure imgf000086_0001
where n = 3 to 5, X is H or C, and * is other than H.
(64) The method according to claim 63 where n is 3.
(65) The method according to any one of claims 52 to 62 where A and S-i are selected to provide a water soluble synthetic molecule construct.
(66) The method according to any one of claims 52 to 65 where F is a naturally occurring or synthetic glycotope.
(67) The method according to claim 66 where F is a naturally occurring or synthetic glycotope consisting of three (trisaccharide) or more sugar units.
(68) The method according to claim 66 where F is a glycotope selected from the group consisting of lacto-neo-tetraosyl, lactotetraosyl, lacto-nor-hexaosyl, lacto-iso-octaosyl, globoteraosyl, globo-neo-tetraosyl, globopentaosyl, gangliotetraosyl, gangliotriaosyl, gangliopentaosyl, isoglobotriaosyl, isoglobotetraosyl, mucotriaosyl and mucotetraosyl series of oligosaccharides.
(69) The method according to claim 66 where F is selected from the group of glycotopes comprising the terminal sugars GalNAcα1-3(Fucα1-2)Galβ; Galα1-3Galβ; Galβ; Galαl- 3(Fucα1-2)Galβ; NeuAcα2-3Galβ; NeuAcα2-6Galβ; Fucαl -2Galβ; Galβ1-4GlcNAcβ1- 6(Galβ 1 -4GlcNAcβ1 -3)Galβ; Fucαl -2Galβ 1 -4GlcNAcβ1 -6(Fucα1 -2Galβ 1 -4GlcN Acβ 1 - 3)Galβ; Fucαl -2Galβ1 -4GlcNAcB1 -6(NeuAcα2-3Galβ1 -4GlcNAcβ1 -3)Galβ; NeuAcα2- 3Galβ1 -4GlcNAcβ1 -6(NeuAcα2-3Galβ1 -4GlcNAcβ1 -3)Galβ; Galαl -4GalB1 -4Glc; GalNAcβ1-3Galα1-4Galβ1-4Glc; GalNAcα1-3GalNAcβ1-3Galα1-4Galβ1-4Glc; or GalNAcβl -3GalNAcβ1 -3Galα1 -4Galβ1 -4Glc.
(70) The method according to any one of claims 52 to 69 where when F is a glycotope, L is a glycerophospholipid and S2 is selected from the group including: -CO(CH2)3CO-, - CO(CH2) CO- (adipate), -CO(CH2)5CO- and -CO(CH2)sNHCO(CH2)5CO-.
(71) The method according to any one of claims 52 to 70 where Si is a C3-5-aminoalkyl selected from the group consisting of: 3-aminopropyl, 4-aminobutyl, or 5-aminopentyl.
(72) The method according to claim 71 where ST is 3-aminopropyl.
(73) The method according to any one of claims 52 to 65 where F is a synthetic molecule construct that mediates a cell-cell or cell-surface interaction.
(74) The method according to claim 73 where F is carbohydrate, protein or lipid with an affinity for a component expressed on a targeted cell or surface.
(75) The method according to claim 74 where F has an affinity for a component expressed on epithelial cells or extra-cellular matrices.
(76) The method according to claim 75 where F has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium.
(77) The method according to claim 76 where the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
(78) The method according to any one of claims 52 to 65 where F is a synthetic molecule construct that mediates a cell-solute interaction.
(79) The method according to claim 78 where F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition.
(80) The method according to claim 79 where F is a ligand for an antibody (immunoglobulin).
(81) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000088_0001
designated Aw-sp-Ad-DOPE (I) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(82) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000089_0001
designated Aw-spspi-Ad-DOPE (II) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(83) The method according to claim 52 where the water soluble synthetic molecule construct has the structure: otfH
Figure imgf000089_0002
designated Aw-sp-Ad-DSPE (III) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(84) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000089_0003
designated Bw-sp-Ad-DOPE (VI) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(85) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000090_0001
designated Hw-sp-Ad-DOPE (VII) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(86) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000090_0002
designated Hdi-sp-Ad-DOPE (VIII) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +.
(87) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000090_0003
designated GaIβ,-sp-Ad-DOPE (IX);
(88) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000091_0001
designated Fucαl -2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH4 +.
(89) The method according to claim 52 where the water soluble synthetic molecule construct has the structure:
Figure imgf000091_0002
designated Fucαl -2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII) and where M is typically H, but may be replaced by another monovalent cation such as Na+, K+ or NH +
(90) A water soluble synthetic molecule construct prepared by a method according to any one of claims 52 to 89
(91) A method of effecting qualitative and/or quantitative changes in the surface antigens ■ expressed by a cell or multi-cellular structure including the step:
Contacting a suspension of the cell or multi-cellular structure with a water soluble synthetic molecule construct according to any one of claims 14 to 51 or 90 for a time and at a temperature sufficient to effect the qualitative and/or quantitative change in the surface antigens expressed by the cell or multi-cellular structure.
(92) The method according to claim 91 where the cell or multi-cellular structure is of human or murine origin.
(93) The method according to claim 91 or 92 where the concentration of the water soluble synthetic molecule construct in the suspension is in the range 0.1 to 10 mg/mL.
(94) The method according to any one of claims 91 to 93 where the suspension of the cell or multi-cellular structure is contacted with the water soluble synthetic molecule construct at a temperature in the range 2 to 37 °C.
(95) The method according claim 94 where the suspension of the cell or multi-cellular structure is contacted with the solution of the water soluble synthetic molecule construct at a temperature in the range 2 to 25 °C.
(96) The method according claim 95 where the suspension of the cell or multi-cellular structure is contacted with the solution of the water soluble synthetic molecule construct at a temperature in the range 2 to 4 °C.
(97) The method according to any one of claims 91 to 96 where F is selected from the group of glycotopes comprising the terminal sugars GalNAcα1-3(Fucα1-2)Galβ; Galα1-3Galβ; Galβ; Galα1-3(Fucα1-2)Galβ; NeuAcα2-3Galβ; NeuAcα2-6Galβ; Fucα1-2Galβ; Galβl- 4GlcNAcβ1 -6(Galβ1 -4GlcNAcβ1 -3)Galβ; Fucαl -2Galβ1 -4GlcNAcβ1 -6(Fucα1 -2Ga|β1 - 4GlcNAcβ1 -3)Galβ; Fucαl -2Galβ1 -4GlcN Acβ1 -6(Neu Acα2-3Galβ1 -4GlcN Acβ1 -3)Galβ; NeuAcα2-3Galβ 1 -4GlcN Acβ1 -6(Neu Acα2-3Galβ1 -4GlcNAcβ1 -3)Galβ; Galαl -4Galβ1 - 4Glc; GalNAcβ1-3Galα1-4Galβ1-4Glc; GalNAcα1-3GalNAcβ1-3Galα1-4Galβ1-4Glc; or GalNAcβ1-3GalNAcβ1-3Galα1-4Galβ1-4Glc.
(98) The method according to claim 97 where F is selected from the group of glycotopes consisting of the oligosaccharides GalNAcα1-3(Fucα1-2)Galβ and Galαl -3(Fucα1-
(99) The method according to any one of claim 91 or 96 where the synthetic molecule construct is selected from the group including: Aw-sp-Ad-DOPE (I); Atri-spspι-Ad-DOPE (II); Aw-sp-Ad-DSPE (HI); Bw-sp-Ad-DOPE (VI); Hw-sp-Ad-DOPE (VII); Hdi-sp-Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucαl -2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad- DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII).
(100) The method according to any one of claims 91 to 99 where the cell or multi-cellular structure is an embryo.
(101) The method according to claim 100 where F is an attachment molecule where the attachment molecule has an affinity for a component expressed on the epithelial cells or the extra-cellular matrix of the endometrium.
(102) The method according to claim 101 where the component expressed on the epithelial cells or the extra-cellular matrix of the endometrium can be a naturally expressed component or an exogenously incorporated component.
(103) The method according to any one of claims 91 to 99 where the cell or multi-cellular structure is a red blood cell.
(104) The method according to claim 103 where F is a ligand for a binding molecule where the presence of the binding molecule is diagnostic for a pathological condition.
(105) The method according to claim 104 where F is a ligand for an antibody (immunoglobulin).
(106) A cell or multi-cellular structure incorporating a water soluble synthetic molecule construct according to any one of claims 14 to 51 or 90.
(107) The cell or multi-cell structure according to claim 106 where the cell or multi-cellular structure is of human or murine origin.
(108) The cell or multi-cell structure according to claim 106 or 107 where the cell or multi-cell structure is a red blood cell incorporating a water soluble synthetic molecule construct selected from the group including: Aw-sp-Ad-DOPE (I); Aw-spsprAd-DOPE (II); Aw-sp- Ad-DSPE (III); Bw-sp-Ad-DOPE (VI); Hw-sp-Ad-DOPE (VII); Hdi-sp-Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucαl -2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII).
(109) The cell or multi-cell structure according to claim 106 or 107 where the cell or multi-cell structure is an embryo incorporating a water soluble synthetic molecule construct selected from the group consisting of: Aw-sp-Ad-DOPE (I); Aw-spsprAd-DOPE (II); Aw- sp-Ad-DSPE (III); Bw-sp-Ad-DOPE (VI); Hw-sp-Ad-DOPE (VII); Hdi-sp-Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucαl -2Galβ1-3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucαl -2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII).
(110) A kit comprising a preparation of a molecule according to any one of claims 1 to 13, or a dried preparation or solution of a water soluble synthetic molecule construct according to any one of claims 14 to 51 or 90.
(111) The kit according to claim 110 where the molecule according to any one of claims 1 to 13 is selected from the group consisting of: Ad-DOPE; sp Ad-DOPE; and Ad-DSPE.
(112) The kit according to claim 1 where water soluble synthetic molecule construct according to any one of claims 14 to 51 or 90 is selected from the group consisting of: Aw-sp-Ad- DOPE (I); Aw-spsprAd-DOPE (II); Aw-sp-Ad-DSPE (HI); B,π-sp-Ad-DOPE (VI); H,π-sp- Ad-DOPE (VII); Hdl-sp-Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucαl -2Galβ1- 3GlcNAcβ1-3Galβ1-4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(FUcα1-4)GlcNAc- sp-Ad-DOPE (XIII).
(113) A kit comprising a suspension in a suspending solution of cells or multi-cellular structures according to any one of claims 106 to 109.
(114) The kit according to claim 113 where the suspending solution is substantially free of lipid.
(115) The kit according to claim 113 or 114 where the cell or multi-cellular structure is of human or murine origin.
(116) The kit according to any one of claims 113 to 115 where the cells are red blood cells that do not naturally express A- or B-antigen and incorporate a water soluble synthetic molecule construct selected from the group consisting of: Aw-sp-Ad-DOPE (I); Aw- spsprAd-DOPE (II); Aw-sp-Ad-DSPE (III); Btπ-sp-Ad-DOPE (VI); Hw-sp-Ad-DOPE (VII); Hdrsp-Ad-DOPE (VIII); Galβrsp-Ad-DOPE (IX); Fucαl -2Galβ1-3GlcNAcβ1-3Galβ1- 4GlcNAc-sp-Ad-DOPE (XII); and Fucα1-2Galβ1-3(Fucα1-4)GlcNAc-sp-Ad-DOPE (XIII).
(117) The kit according to claim 16 where the suspending solution additionally contains one or more antibodies.
(118) The kit according to claim 117 where the cells are sensitivity controls.
( 19) A pharmaceutical preparation comprising a dried preparation or solution of a water soluble synthetic molecule construct according to any one of claims 14 to 51 or 90.
(120) The pharmaceutical preparation according to claim 119 where the pharmaceutical preparation is in a form for administration by inhalation.
(121) The pharmaceutical preparation according to claim 120 where the pharmaceutical preparation is in a form for administration by injection.
(122) A pharmaceutical preparation comprising cells or multi-cellular structures according to any one of claims 106 to 109.
(123) The pharmaceutical preparation according to claim 122 where the cells or multi-cellular structures are of human or murine origin.
(124) The pharmaceutical preparation according to claim 122 or 123 where the pharmaceutical preparation is in a form for administration by inhalation.
(125) The pharmaceutical preparation according to claim 122 or 123 where the pharmaceutical preparation is in a form for administration by injection.
PCT/NZ2005/000052 2004-03-22 2005-03-22 Synthetic membrane anchors WO2005090368A1 (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
DK05722123.6T DK1735323T3 (en) 2004-03-22 2005-03-22 Synthetic Membrane Anchors
NZ550705A NZ550705A (en) 2004-03-22 2005-03-22 Synthetic membrane anchors
EP05722123.6A EP1735323B1 (en) 2004-03-22 2005-03-22 Synthetic membrane anchors
EA200601753A EA013183B1 (en) 2004-03-22 2005-03-22 Synthetic membrane constructs
CA2560781A CA2560781C (en) 2004-03-22 2005-03-22 Synthetic membrane anchors
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AU2005223715A AU2005223715A1 (en) 2004-03-22 2005-03-22 Synthetic membrane anchors
US10/593,829 US8013131B2 (en) 2004-03-22 2005-03-22 Synthetic membrane anchors
ES05722123.6T ES2654578T3 (en) 2004-03-22 2005-03-22 Synthetic membrane anchors
JP2007504907A JP5456250B2 (en) 2004-03-22 2005-03-22 Synthetic molecular constructs and methods for altering cell surface antigen expression using the same
IL178008A IL178008A (en) 2004-03-22 2006-09-11 Synthetic molecule constructs comprising a glycotope and a lipid, cellular structures comprising same, pharmaceutical compositions and kits comprising same and methods of use thereof
AU2010203098A AU2010203098B2 (en) 2004-03-22 2010-07-20 Synthetic Molecule Constructs
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US14/108,749 US9353349B2 (en) 2004-03-22 2013-12-17 Synthetic membrane anchors
US15/168,144 US9809614B2 (en) 2004-03-22 2016-05-30 Synthetic membrane anchors
US15/804,427 US10414786B2 (en) 2004-03-22 2017-11-06 Synthetic membrane anchors
US16/571,526 US10858384B2 (en) 2004-03-22 2019-09-16 Synthetic molecule constructs

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