EP4401710A2 - Nanoparticules comprenant au moins un sel metallique et au moins une peptide - Google Patents
Nanoparticules comprenant au moins un sel metallique et au moins une peptideInfo
- Publication number
- EP4401710A2 EP4401710A2 EP22802899.9A EP22802899A EP4401710A2 EP 4401710 A2 EP4401710 A2 EP 4401710A2 EP 22802899 A EP22802899 A EP 22802899A EP 4401710 A2 EP4401710 A2 EP 4401710A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- peptide
- amino acid
- acid sequence
- following amino
- nanoparticle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/51—Nanocapsules; Nanoparticles
- A61K9/5107—Excipients; Inactive ingredients
- A61K9/513—Organic macromolecular compounds; Dendrimers
- A61K9/5161—Polysaccharides, e.g. alginate, chitosan, cellulose derivatives; Cyclodextrin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/69—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
- A61K47/6921—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere
- A61K47/6927—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores
- A61K47/6929—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores the form being a nanoparticle, e.g. an immuno-nanoparticle
- A61K47/6931—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores the form being a nanoparticle, e.g. an immuno-nanoparticle the material constituting the nanoparticle being a polymer
- A61K47/6935—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a solid microparticle having no hollow or gas-filled cores the form being a nanoparticle, e.g. an immuno-nanoparticle the material constituting the nanoparticle being a polymer the polymer being obtained otherwise than by reactions involving carbon to carbon unsaturated bonds, e.g. polyesters, polyamides or polyglycerol
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
- A61K33/242—Gold; Compounds thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/62—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being a protein, peptide or polyamino acid
- A61K47/64—Drug-peptide, drug-protein or drug-polyamino acid conjugates, i.e. the modifying agent being a peptide, protein or polyamino acid which is covalently bonded or complexed to a therapeutically active agent
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5021—Organic macromolecular compounds
- A61K9/5026—Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5021—Organic macromolecular compounds
- A61K9/5031—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poly(lactide-co-glycolide)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5021—Organic macromolecular compounds
- A61K9/5036—Polysaccharides, e.g. gums, alginate; Cyclodextrin
- A61K9/5042—Cellulose; Cellulose derivatives, e.g. phthalate or acetate succinate esters of hydroxypropyl methylcellulose
- A61K9/5047—Cellulose ethers containing no ester groups, e.g. hydroxypropyl methylcellulose
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5094—Microcapsules containing magnetic carrier material, e.g. ferrite for drug targeting
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/51—Nanocapsules; Nanoparticles
- A61K9/5107—Excipients; Inactive ingredients
- A61K9/513—Organic macromolecular compounds; Dendrimers
- A61K9/5138—Organic macromolecular compounds; Dendrimers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/51—Nanocapsules; Nanoparticles
- A61K9/5107—Excipients; Inactive ingredients
- A61K9/513—Organic macromolecular compounds; Dendrimers
- A61K9/5146—Organic macromolecular compounds; Dendrimers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, polyamines, polyanhydrides
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to a nanoparticle and its use as a drug or diagnostic agent.
- the present invention also relates to a method for preparing a nanoparticle.
- Hybrid nanoparticles combining a metallic part associated with a biocompatible polymer and a therapeutic molecule are promising nanomedicines and theranostic agents, particularly in the context of cancer treatment. These nanoparticles make it possible both to transport therapeutic molecules to the target cells and can be used, thanks to their metallic part, as photothermotherapeutic agents and/or in vivo imaging markers.
- Emami stall. (2019) Mol. Pharmaceutics 16: 1184-1199 describe the use of hybrid nanoparticles combining a gold nanoparticle, a biocompatible polymer, polyethylene glycol (PEG), a therapeutic molecule, doxorubicin, and an anti-PD-Li antibody, making it possible to target colorectal cancer cells which over-express PD-Li, to destroy cells of the colorectal cancer cell line CT-26.
- PEG polyethylene glycol
- doxorubicin doxorubicin
- an anti-PD-Li antibody an anti-PD-Li antibody
- these nanoparticles facilitate the entry of doxorubicin into CT-26 cells, since 66% of cells undergo apoptosis, and that the combination of doxorubicin treatment and near-infrared irradiation significantly abolishes significant and synergistic in vitro proliferation of CT-26 cells by increasing apoptosis and cell cycle arrest.
- the photothermo-therapeutic efficacy of these nanoparticles is not optimal. Indeed, these same nanoparticles without doxorubicin cause the death of only about 20% of the cells after irradiation in the near infrared.
- the combination of doxorubicin and near-infrared irradiation only reduced the survival rate of CT-26 cells from about 20% to about 10% compared to the same treatment in the absence of irradiation.
- hybrid nanoparticles capable of delivering therapeutic molecules, with improved photothermo-therapeutic properties.
- the present invention stems from the unexpected demonstration by the inventors that hybrid nanoparticles obtained by chelation of chloroauric acid with a peptide of cell penetration, in particular one of the peptides NFL, TAT or VIM functionalized with a biotin and with dicarboxylic acid-terminated polyethylene glycol (NFL-BIOTINE-PEG-AuNPs, TAT-BIOTINE-PEG-AuNPs, VIM-BIOTINE-PEG -AuNPs) exhibit high stability and biocompatibility and are particularly suitable for the treatment of cancer.
- the method for obtaining the nanoparticles according to the invention is a simple method comprising few 'steps.
- NFL-BIOTIN-PEG-AuNPs hybrid nanoparticles at concentrations of 500 pmol/L and 1000 pmol/L lead to a significant reduction in the cell viability of MiaPaCa-2 cells (cancer cell line of human pancreas) and F98 cells (rat glioblastoma line).
- NFL-BIOTIN-PEG-AuNPs hybrid nanoparticles at 100 pmol/L also cause a significant decrease in the cell viability of MiaPaCa-2 cells and irradiated F98 cells after administration of the nanoparticles.
- the inventors have also demonstrated that the hybrid nanoparticles TAT-BIOTIN-PEG-AuNPs and VIM-BIOTIN-PEG-AuNPs lead to a significant reduction in the cell viability of F98 cells (rat glioblastoma line).
- the present invention relates to a nanoparticle comprising: a combination of at least one metal salt and at least one peptide; and at least one biocompatible polymer.
- the present invention also relates to a nanoparticle as defined above for use as a medicament and/or diagnostic agent.
- the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising at least one nanoparticle as defined above as active ingredient, optionally in combination with a pharmaceutically acceptable vehicle.
- the present invention also relates to a diagnostic composition comprising at least one nanoparticle as defined above.
- the present invention also relates to a medical device comprising at least one nanoparticle as defined above.
- the present invention also relates to a method for preparing a nanoparticle comprising: a combination of at least one metal salt and at least one peptide; and at least one biocompatible polymer, comprising: a step in which the metal salt is chelated with the peptide; a step of mixing with the biocompatible polymer; And a step of reducing the mixture with a reducing agent.
- the term “comprising” is synonymous with “including”, “containing” or “encompassing”, i.e. when an object “comprises” one or more elements, other elements than those mentioned can also be included in the object.
- the expression “consisting of” means “consisting of”, i.e. when an object "consists of” one or more elements, the object cannot include other elements. than those mentioned.
- biocompatible is meant within the meaning of the invention the ability of a material to be compatible with a biological medium, in particular a tissue or a fluid of a living organism.
- a biocompatible material within the meaning of the invention can be used in a pharmaceutical composition, in a diagnostic composition, in a medical device, for example for diagnostic or therapeutic purposes.
- biopolymer or “natural polymer” within the meaning of the invention means a polymer which can be produced by a living organism, such as for example an animal, a plant or a fungus.
- metallic salt is meant within the meaning of the invention, metal oxides and salts resulting from the action of an acid on a metal.
- metal salt according to the invention results from the action of an acid on a metal.
- the metal salt according to the invention is selected from the group consisting of a transition metal salt, a lanthanide salt, an alkaline earth metal salt and mixtures thereof.
- the metal salt according to the invention is selected from the group consisting of a salt of gold (Au), Selenium (Se), gadolinium (Gd), cobalt (Co), europium (Eu) , terbium (Tb), cerium (Ce), manganese (Mn), iron (Fe), zinc (Zn) and copper (Cu).
- the metal salt according to the invention is a metal salt of an inorganic acid.
- metal salt of inorganic acid according to the invention it is possible to cite sulphates, chlorides, nitrates, phosphates and carbonates.
- the metal salt according to the invention is HAUC1 4 chlorauric acid.
- the metal salt according to the invention is not an iron salt or an iron oxide.
- the peptide according to the invention is an isolated amino acid sequence comprising no more than too many amino acids.
- the peptide according to the invention comprises between 2 and too amino acids, for example between 2 and 90, between 2 and 80, between 2 and 70, between 2 and 60, between 2 and 50 and between 2 and 40 acids.
- amines Preferably, the peptide according to the invention comprises at least 2 amino acids, for example at least 3, at least 4, at least 5, at least 6, at least 7, at least 8, at least 9 and at least 10 amines. More preferably, the peptide according to the invention comprises between 2 and 40 amino acids for example, between 10 and 40 amino acids or between 10 and 30 amino acids.
- the peptide according to the invention can be chosen from any biocompatible peptide well known to those skilled in the art.
- the peptide according to the invention is selected from the group consisting of a chimeric peptide, a synthetic peptide and a peptide derived from a protein.
- the peptide according to the invention is a peptide capable of penetrating into cells, in particular of penetrating the plasma membrane of cells. More preferably, the peptide according to the invention is a cell penetrating peptide (CPP).
- CPP cell penetrating peptide
- the peptide according to the invention is a peptide capable of crossing the blood-brain barrier.
- the peptide according to the invention is a cell-penetrating peptide selected from the group consisting of a polycationic peptide with a sequence rich in positively charged amino acid residues such as for example lysine or arginine, of a amphiphilic peptide with a sequence alternating between electrically charged polar residues and hydrophobic apolar residues and of a hydrophobic peptide containing only electrically slightly charged or hydrophobic apolar residues.
- a polycationic peptide with a sequence rich in positively charged amino acid residues such as for example lysine or arginine
- amphiphilic peptide with a sequence alternating between electrically charged polar residues and hydrophobic apolar residues and of a hydrophobic peptide containing only electrically slightly charged or hydrophobic apolar residues.
- the peptide according to the invention is selected from the group consisting of the NFL peptide having the following amino acid sequence: YSSYSAPVSSSLSVRRSYSSSSGS (SEQ ID NO: 1), the TAT peptide having the following amino acid sequence: GRKKRRQRRRPPQ ( SEQ ID NO: 2), the VIM peptide having the following amino acid sequence: GGAYVTRSSAVRLRSSVPGVRLLQ (SEQ ID NO: 3), the transportan peptide having the following amino acid sequence: GWTLNSAGYLLGKINLKALAALAKKIL (SEQ ID NO: 4), the penetratin peptide having the following amino acid sequence: RQIKIWFQNRRMKWKK (SEQ ID NO: 5), MAP peptide having the following amino acid sequence: KLALKLALKALKAALKLA (SEQ ID NO: 6), Pep-1 peptide having the sequence d following amino acids: KETWWETWWTEWSQPKKKRKV (SEQ ID NO: 1), the
- the peptide according to the invention can also be a cyclic peptide such as for example the cyclic RGD peptide.
- the peptide according to the invention is selected from the group consisting of the NFL peptide having the following amino acid sequence: YSSYSAPVSSSLSVRRSYSSSSGS (SEQ ID NO: 1), the TAT peptide having the following amino acid sequence: GRKKRRQRRRPPQ ( SEQ ID NO: 2), the VIM peptide having the following amino acid sequence: GGAYVTRSSAVRLRSSVPGVRLLQ (SEQ ID NO: 3) or a derivative thereof.
- the peptide according to the invention is not a peptide targeting the EGFR receptor, in particular a -lysine-azidoacetic acid peptide, or a peptide targeting the bones.
- peptide derivative is meant within the meaning of the invention the variants and fragments of the peptide to which they refer.
- the derivatives, in particular the variants or fragments, of the peptide according to the invention are biologically active.
- the variant of the peptide according to the invention can be chosen from any variant well known to those skilled in the art.
- a variant according to the invention it is possible to cite an allelic variant of the peptide, and a peptidomimetic variant of the peptide.
- the variant according to the invention has the same number of amino acids as the peptide from which it is derived.
- the percentage identity between two peptide sequences is well known to those skilled in the art.
- the percentage identity between two peptide sequences can be determined by performing a sequence alignment over the entire length of the similar sequences and determining the number of positions for which the amino acids are identical in each sequence and by dividing this number by the total number of amino acids in the longest sequence.
- the peptidomimetic variant according to the invention is preferably an organic molecule which mimics certain properties of the parent peptide.
- the preferred peptidomimetic variants according to the invention are obtained by structural modification of the peptides according to the invention, for example by using unnatural amino acids such as a D amino acid instead of an L amino acid, conformational constraints, a isosteric replacement, cyclization or other modifications.
- modifications By way of example of other modifications, it is possible to cite the following modifications: replacement of one or more amide bonds by a non-amide bond; replacement of one or more amino acid side chains with a different chemical moiety; protection of one or more N-terminal, C-terminal or side chain ends by a protective group; introduction of a double bond or a ring in the main chain.
- the modifications have the effect of increasing the rigidity, the binding affinity, the resistance to enzymatic degradation, the bioavailability and more generally of improving the pharmacokinetic properties of the peptide according to the invention.
- the person skilled in the art is able to design and produce peptidomimetic variants having similar or superior biological characteristics to the peptides according to the invention, in particular to the penetration peptides cell, more particularly to the NFL, TAT and VIM peptides according to the invention.
- the NFL peptide also named NFL-TBS40-63 below, is a polypeptide of 24 amino acids having the following sequence: YSSYSAPVSSSLSVRRSYSSSSGS (SEQ ID NO: 1). This peptide is well known to those skilled in the art and corresponds to the second tubulin-binding site of the light neurofilament subunit (amino acids 40 to 63 of the TBS site of the NFL protein).
- the peptide according to the invention is a derivative of the NFL peptide, in particular a variant or a fragment thereof.
- the NFL peptide fragments and variants are biologically active.
- the fragment of the NFL peptide according to the invention comprises at least 12 successive amino acids of the parent NFL peptide, preferably at least 16, more preferably at least 18 amino acids.
- the variant according to the invention comprises at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 98% of identity with respect to NLF-peptide.
- an allelic variant of the NFL peptide it is possible to cite the TBS motif of the light subunit of the quail neurofilament, which retains 20 out of 24 amino acids of the NFL-TBS40-63 peptide.
- the TAT peptide also called TAT48-60 below, is a peptide of 13 amino acids having the following sequence GRKKRRQRRRPPQ (SEQ ID NO: 2). This peptide, well known to those skilled in the art, corresponds to residues 48 to 60 of the TAT protein involved in the replication of human immunodeficiency virus type 1 (HIV-1).
- the peptide according to the invention is a derivative of the TAT peptide, in particular a variant or a fragment thereof.
- the TAT peptide derivative according to the invention is biologically active.
- the fragment of the TAT peptide according to the invention comprises at least 5 successive amino acids of the TAT parent peptide, preferably at least 6, at least 7, at least 8 amino acids.
- the variant according to the invention comprises at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 98% of identity with respect to TAT-peptide.
- the VIM peptide is a 24 amino acid peptide having the following sequence: GGAYVTRSSAVRLRSSVPGVRLLQ (SEQ ID NO: 3).
- the peptide according to the invention is a derivative of the VIM peptide, in particular a variant or a fragment thereof.
- the VIM peptide derivative according to the invention is biologically active.
- the fragment of the VIM peptide according to the invention comprises at least 12 successive amino acids of the parent VIM peptide, preferably at least 14, at least 16 and more preferentially at least 18 amino acids.
- the variant of the VIM peptide according to the invention comprises at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 98% of identity compared to the VIM peptide.
- the penetratin peptide is a 16-residue long fragment with the following amino acid sequence: RQIKIWFQNRRMKWKK (SEQ ID NO: 5). This peptide, well known to those skilled in the art, is derived from the homeodomain of the Drosophila transcription factor Antennapedia.
- the peptide according to the invention is a derivative of the peptide penetratine, in particular a variant or a fragment thereof.
- the derivative of the penetratin peptide according to the invention is biologically active.
- the fragment of the penetratine peptide according to the invention comprises at least 5 successive amino acids of the parent peptide penetratine, preferably at least 6, at least 7, at least 8 amino acids.
- the variant according to the invention comprises at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 98% of identity with respect to Penetratin peptide.
- the peptide according to the invention can be prepared using any technique well known to those skilled in the art, in particular via chemical synthesis.
- the peptide as defined above is coupled with at least one coupling agent.
- the terms “coupling agent” and “conjugating agent” are interchangeable.
- the terms “coupled”, “conjugated”, “functionalized”, and “modified” may be used interchangeably.
- the coupling agent according to the invention can be chosen from any coupling agent well known to those skilled in the art.
- the coupling agent according to the invention is non-peptide.
- the coupling agent can be bifunctional, preferably heterobifunctional, such as Ny-maleimidobutyryl-oxysuccinimide (GMBS) ester and the sulfo-GMBS derivative, m-maleimidobenzoyl-n-hydroxysuccinimide (MBS) ester and sulfo-MBS derivative, succinimidyl 4- (N-maleimidomethyl) cyclohexane-i-carboxylate (SMCC), sulfo-succinimidyl 4- (N- maleimidomethyl) cyclohexane-i-carboxylate (sulfo-SMCC), a carbodiimide, bisdiazonium -benzidine (BDB) or glutaraldehyde, biotin, sulfo-NHS-bitoin or a fluorophore, also known as fluorochrome, such as hydroxycoumarin, aminocoumarin, methoxycoumarin, Cascade Blue,
- GMBS, MBS, SMCC or sulfo-SMCC are used, they are preferably attached to a cysteine (C), which if it is not present in the sequence of the peptide, can be added, in particular to its N-terminal or C-terminal end.
- C cysteine
- the coupling agent according to the invention can also be chosen from any functional group well known to those skilled in the art which can bind to a peptide.
- a functional group according to the invention it is possible to cite fluorine, a phosphate group, an acetyl group, an alkyl group, a glutamic acid residue, a carboxyl group, a glycine residue, a glycosyl group , a hydroxyl group, an amide group and a sulfate group.
- the coupling agent according to the invention is selected from the group consisting of biotin and fluorescein.
- the peptide according to the invention is functionalized by at least one biotin, for example by one biotin, by two biotins or by three biotins.
- the peptide according to the invention is functionalized by at least one fluorescein, for example by one fluorescein, by two fluoresceins, by three fluoresceins.
- the peptide according to the invention can be modified by any conventional peptide coupling process well known to those skilled in the art, for example by chemical means or by enzymatic means.
- any conventional peptide coupling process well known to those skilled in the art, for example by chemical means or by enzymatic means.
- a process for modifying the peptide according to the invention mention may be made of acetylation, alkylation, biotinylation, glutamylation, glycylation, glycosylation, hydroxylation, phosphorylation, sulfation , amidation, PEGylation.
- the coupling agent according to the invention in particular fluorescein or biotin, is bound to the peptide according to the invention in a covalent manner.
- the functionalization of the peptide according to the invention by at least one coupling agent, in particular a fluorescein or a biotin, can be carried out directly on a primary amine, a secondary amine or both.
- At least a coupling agent in particular a fluorescein or a biotin, is linked to the N-terminal end or to the C-terminal end of the peptide according to the invention.
- the functionalization of the peptide by at least one coupling agent is carried out with an intermediate well known to those skilled in the art on the primary carboxylic functions or secondary or both.
- an intermediate well known to those skilled in the art on the primary carboxylic functions or secondary or both.
- a binding intermediate it is possible to cite a carbodiimide such as i-ethyl-3-(3-dimethylaminopropyl)carbodiimide.
- the biocompatible polymer according to the invention can be a natural or synthetic polymer and can be selected from any biocompatible polymer well known to those skilled in the art.
- the biocompatible polymer according to the invention is selected from the group consisting of synthetic biocompatible polymers, biopolymers and heat-sensitive biocompatible polymers.
- the biocompatible polymer according to the invention is selected from the group consisting of polyethylene glycol (PEG), polyethylene glycol diacid (PEG-diacid), polyethylene glycol diamine (PEG-diamine), collagen, alginate , elastin, hyaluronic acid, cellulose, gelatin, polylactic acid, maltodextrin, glucose polymer, lactose polymer, chitosan, dextran, d a heat-sensitive polymer, poly(N-isopropylacrylamide), poly[2-(dimethylamino)ethyl methyl methacrylate] (pDMAEMA), hydroxypropyl cellulose, poly(vinylcaprolactam) and polyvinyl methyl ether) or a combination of these.
- PEG polyethylene glycol
- PEG-diacid polyethylene glycol diacid
- PEG-diamine polyethylene glycol diamine
- collagen alginate , elastin, hyalur
- the biocompatible polymer is polyethylene glycol dicarboxylic.
- the nanoparticle according to the invention has a diameter of between 5 nm and 500 nm, more preferably between 5 nm and 200 nm, for example between 5 nm and 150 nm, between 5 nm and 100 nm, between 5 nm and 90 nm . More preferably, the nanoparticle according to the invention has a diameter of between 20 nm and 200 nm, for example between 20 nm and 150 nm, or between 20 nm and 100 nm.
- the peptide according to the invention is inside the nanoparticle according to the invention.
- the peptide adopts a steric configuration making it possible to preserve and/or improve the therapeutic activity of the peptide without impacting the stability of the nanoparticle.
- the metal salt is chelated by the peptide according to the invention.
- the metal salt and the peptide are encapsulated by the polymer.
- the nanoparticle according to the invention is prepared according to the method comprising the following steps: a step in which the metal salt is chelated with the peptide; a step of mixing with the biocompatible polymer; And a step of reducing the mixture with a reducing agent.
- the step in which the metal salt is chelated with the peptide comprises dissolving the metal salt, preferably in an aqueous solution, and adding the peptide to the metal salt solution.
- the biocompatible polymer is used as a stabilizing agent.
- the process for preparing the nanoparticle according to the invention is carried out in the absence of surfactant other than the biocompatible polymer and in the absence of chemical binder.
- the reducing agent according to the invention can be any reducing agent well known to those skilled in the art.
- a reducing agent according to the invention it is possible to cite LiAlHq, NaBHq, NaHg, B2H6, SO2.
- the reducing agent according to the invention is NaBHq.
- the process for preparing the nanoparticle according to the invention can also comprise a step of centrifuging the nanoparticle solution, preferably after the reduction step, in order to eliminate the excess of biocompatible polymer.
- the nanoparticle according to the invention is stable.
- the nanoparticle according to the invention is stable and its biological activity, in particular the targeting and cell internalization properties of the peptide, is maintained for at least 2 months, 4 months, 6 months, 8 months, 10 months, 12 months, 14 months, 16 months, 18 months, 20 months, 22 months, or 24 months.
- nanoparticles according to the invention are particularly suitable for use as a drug and/or diagnostic agent in an individual.
- nanoparticles according to the invention are particularly suitable for use as a theranostic agent.
- nanoparticles according to the invention are also particularly suitable for use in a medical device intended for use in an individual.
- one embodiment of the present invention also relates to a pharmaceutical composition
- a pharmaceutical composition comprising at least one nanoparticle according to the invention as active principle, optionally in combination with a vehicle or a pharmaceutically acceptable excipient.
- the present invention also relates to the use of at least one nanoparticle according to the invention for the manufacture of a medicament, in particular a medicament for the prevention or treatment of cancer, in particular for the prevention or treatment of glioblastoma or pancreatic cancer.
- the present invention also relates to the use of at least one nanoparticle according to the invention for the targeting, detection and destruction of cancer cells.
- the present invention also relates to a method of treating cancer, in particular glioblastoma or pancreatic cancer, in an individual comprising the administration to the individual of an effective amount of at least one nanoparticle or of a pharmaceutical composition or a medicament according to the invention.
- the present invention also relates to a diagnostic composition
- a diagnostic composition comprising at least one nanoparticle according to the invention as active ingredient, optionally in combination with a vehicle or a pharmaceutically acceptable excipient.
- the medical device according to the invention preferably comprises at least one nanoparticle according to the invention.
- the medical device according to the invention is used for the diagnosis, prevention or treatment of cancer, in particular glioblastoma or pancreatic cancer.
- the medical device according to the invention can be chosen from any medical device well known to those skilled in the art.
- the medical device according to the invention is selected from the group consisting of a medical imaging device or an implantable device such as an implant, a stent, a catheter.
- implantable device is meant any device intended to be introduced totally or partially, by medical intervention, into the human or animal body.
- the nanoparticle, the pharmaceutical composition, the drug or the medical device according to the invention is used for the prevention or treatment of cancer, in particular glioblastoma or pancreatic cancer.
- the nanoparticle, the diagnostic composition or the medical device according to the invention is used for the detection of cancerous cells or tumors, for the diagnosis of cancer, for the monitoring of evolution of a cancer and/or for the follow-up of a therapeutic treatment of cancer.
- the nanoparticle, the pharmaceutical composition, the diagnostic composition, the drug, or the medical device is used as a contrast agent for diagnostic imaging such as radiography, radiography imaging, magnetic resonance (MRI), Raman spectroscopy, optical imaging, optical coherence tomography, X-rays, computed tomography, positron emission tomography or combinations thereof.
- diagnostic imaging such as radiography, radiography imaging, magnetic resonance (MRI), Raman spectroscopy, optical imaging, optical coherence tomography, X-rays, computed tomography, positron emission tomography or combinations thereof.
- One embodiment of the present invention relates to the monitoring of the administration of the nanoparticle, of its biodistribution and its bioavailability, of the pharmaceutical composition, of the medicine, or of the diagnostic composition according to the invention to an individual by a diagnostic device and individual diagnosis.
- the nanoparticles, the drug, the pharmaceutical or diagnostic composition, the medical device according to the invention are used in at least one of the following situations: diagnose cancer, in particular glioblastoma or pancreatic cancer; determine the state or evolution of a cancer, in particular glioblastoma or pancreatic cancer,
- cancer in particular glioblastoma or pancreatic cancer
- therapeutic treatment for cancer in particular glioblastoma or pancreatic cancer
- the cancer prevented or treated according to the invention can be any cancer known to those skilled in the art.
- the cancer prevented or treated according to the invention can be at stage 1, stage 2, stage 3 or stage 4.
- the cancer prevented or treated according to the invention is selected from the group consisting of cancers of the central nervous system, of the endocrine system and of the digestive system.
- the cancer prevented or treated according to the invention is selected from the group consisting of thyroid cancer, parathyroid cancer, thymus cancer, ovarian cancer, testicular cancer, cancer of the pancreatic islets, gallbladder cancer, stomach cancer, esophageal cancer, colon cancer, glioblastoma, liver cancer, pancreatic cancer, rectal cancer, breast cancer intestine, cancer of the small intestine. More preferably, the cancer prevented or treated according to the invention is selected from the group consisting of glioblastoma and pancreatic cancer.
- the nanoparticle, the pharmaceutical composition, the drug, the diagnostic composition or the medical device according to the invention is particularly suitable for use in photothermal therapy, in particular for the treatment of cancer by photothermia.
- Photothermia is a cancer treatment method well known to those skilled in the art.
- the nanoparticle according to the invention, the pharmaceutical composition or the drug according to the invention is injected into the bloodstream of the individual, preferably by intravenous injection.
- the nanoparticle then penetrates the tumor or cancer cells to be treated, which are exposed to infrared radiation causing their destruction.
- pharmaceutically acceptable carrier or excipient refers to any material suitable for use in a pharmaceutical composition.
- the pharmaceutically acceptable vehicle or excipient according to the invention is suitable for use with nanoparticles according to the invention, preferably in liquid form.
- the pharmaceutically acceptable vehicle or excipient according to the invention is suitable for oral, parenteral, intradermal, intravenous, arterial, intramuscular, nasal, rectal or subcutaneous administration.
- the pharmaceutically acceptable vehicle or excipient according to the invention comprises but is not limited to any standard vehicle or excipient well known to those skilled in the art such as water, glycerin, alcohol, an emulsion oil, water emulsion, saline solution, buffer solution, preservative, stabilizer etc.
- the individual according to the invention is an animal, preferably a mammal, such as a human, a canine, in particular a dog, a feline, in particular a cat, a horse, a bovine, a pig, a caprine, in particular a goat or a sheep, a camelid, a rodent in particular a mouse or a rat. More preferably the individual according to the invention is a human.
- the individual according to the invention has cancer, in particular cancer of the central nervous system, cancer of the endocrine system and cancer of the digestive system.
- the individual according to the invention suffers from glioblastoma or pancreatic cancer.
- the individual according to the invention is suspected of having cancer, in particular glioblastoma or pancreatic cancer.
- the nanoparticle according to the invention, the pharmaceutical composition, the diagnostic composition, the medicine, or the medical device according to the invention is administered in a prophylactic or therapeutic amount effective for detecting, preventing or treating cancer as defined above.
- the nanoparticle according to the invention, the pharmaceutical composition, the drug, the diagnostic composition or the medical device according to the invention can be administered orally, parenterally, intradermally, intravenously, arterial, intramuscular, nasal, rectal or subcutaneous.
- the nanoparticle according to the invention, the pharmaceutical composition, the drug, the diagnostic composition or the medical device can be formulated in the form of an injectable suspension, gels, oil, suppository, capsule, etc...
- the nanoparticle according to the invention, the pharmaceutical composition, the medicine, the diagnostic composition or the medical device can be administered to the individual in a dose of between 10 pmol/L and 2000 pmol/L, preferably between 50 pmol/L.
- L and 1500 pmol/L more preferably between 100 pmol/L and 1000 pmol/L, for example between 200 pmol/L and 1000 pmol/L, between 300 pmol/L and 1000 pmol/L between 400 pmol/L and 1000 pmol/L, between 500 pmol/L and 1000 pmol/L.
- a person skilled in the art is capable of adjusting the dose of nanoparticle or of pharmaceutical composition, of diagnostic composition or of drug according to the weight of the individual to be treated.
- nanoparticle according to the invention, the pharmaceutical composition, the drug, the diagnostic composition or the medical device can be administered with an additional compound for the prevention or treatment of cancer.
- the nanoparticle according to the invention can be used as a carrier of an additional compound for the prevention or treatment of cancer.
- the nanoparticle according to the invention can be used to deliver an additional compound for the prevention or treatment of cancer intracellularly.
- the nanoparticle according to the invention can be used to transport a therapeutic molecule to the target cells, in particular to the cancerous cells of the tumor to be treated.
- the invention relates to a product comprising: at least one nanoparticle as defined above; at least one additional compound for the prevention or treatment of cancer, in particular glioblastoma and pancreatic cancer as a combination product for use, in particular simultaneous, separate or spread over time, for the prevention or treatment of cancer , in particular glioblastoma or pancreatic cancer.
- “combined” or “in combination” means that the nanoparticle according to the invention is administered at the same time as another compound, either together, that is to say at the same site of administration. , either separately or at different times, provided that the period of time during which the nanoparticle according to the invention exerts its effects in the individual and the period of time during which the additional compound produces its pharmacological effects in the individual overlap at least partially.
- the additional compound for the prevention or treatment of cancer can be any compound well known to those skilled in the art.
- the additional compound is selected from the group consisting of cyclophosphamide, docetaxel, doxorubicin, epirubicin, fluorouracil, methotrexate, paclitaxel, everolimus, alectinib, melphalan, brigatinib , nilutamide, cyproterone acetate, anastrozole, exemestane, lomustine, bosutinib, encorafenib, cabozatinib, vandenatib, bicalutamide, etopositde, chlorambucil, cobimetinib, enzalutamide , idarubicia, capecitabine, tamoxifen, dexamethasone, bisulfan, lenvatinib, gemcitabine, 5-FU, irinotecan, 5-FU
- Figure 1 represents the UV-visible spectrum of the NFL-BIOTIN-PEG-AuNPs nanoparticle synthesis with the wavelength (nm) as a function of the absorbance (a.u).
- FIG. 2 represents the UV-visible spectrum of NFL-BIOTINE-PEG-AuNPs nanoparticle at To, and at To+11 months (Test 1 and Test 2).
- Figure 3 represents the increase in temperature (in °C) of water (H2O), of a solution of peptide NFL functionalized with a biotin (NFL-BIOT), of a solution of complex of the gold salt with the peptide functionalized with a biotin (AuNPs) and a solution of NFL-BIOTIN-PEG-AuNPs nanoparticles as a function of time (in min).
- FIG. 4 shows the mitochondrial activity of MiaPaCa-2 cells, MiaPaCa-2 cells treated with colchicine, MiaPaCa-2 cells treated for 24b with 50, 100, 250, 500 and 1000 pmol/L of PEG- AuNPs complexed or not with the NFL-BIOTIN peptide. Mitochondrial activity is expressed as an average % relative to the activity of control MiaPaCa-2 cells.
- Figure 5 represents the mitochondrial activity of MiaPaCa-2 cells, MiaPaCa-2 cells treated with colchicine, MiaPaCa-2 cells treated for 72I1 with 50, 100, 250, 500 and 1000 pmol/L of PEG- AuNPs complexed or not with the NFL-BIOTIN peptide. Mitochondrial activity is expressed as an average % relative to the activity of control MiaPaCa-2 cells.
- FIG. 6 represents the mitochondrial activity of F98 cells, of F98 cells treated with colchicine, of F98 cells treated for 24I1 with 50, 100, 250, 500 and 1000 pmol/L of PEG-AuNPs nanoparticles complexed or not with the NFL-BIOTIN peptide.
- the mitochondrial activity is expressed as an average % relative to the activity of the control F98 cells.
- Fig. 7
- FIG. 7 represents the mitochondrial activity of F98 cells, of F98 cells treated with colchicine, of F98 cells treated for 72I1 with 50, 100, 250, 500 and 1000 pmol/L of PEG-AuNPs nanoparticles complexed or not with the NFL-BIOTIN peptide. Mitochondrial activity is expressed as an average % relative to the activity of control F98 cells.
- Figure 8 represents the cell viability of MiaPaCa-2 cells, treated with the peptide alone (NFL-BIOT) at 0.1 pM, with the PEG-AuNP nanoparticle (AuNPs) at 100 pM and with the NFL-BIOTIN-Au nanoparticle -NPs at 100 pM, after irradiation and internalization of the nanoparticles for 24b.
- the cell viability is expressed in % relative to the cell viability of the untreated cells.
- Figure 9 represents the cell viability of MiaPaCa-2 cells, treated with the peptide alone (NFL-BIOT) at 0.1 pM, with the PEG-AuNP nanoparticle (AuNPs) at 100 pM and with the NFL-BIOTIN-Au nanoparticle -NPs at 100 pM, after irradiation and internalization of the nanoparticles for 48I1.
- the cell viability is expressed in % relative to the cell viability of the untreated cells.
- FIG. 10 represents the cell viability of F98 cells, treated with the peptide alone (NFL-BIOT) at 0.1 pM, with the PEG-AuNP nanoparticle (AuNPs) at 100 pM and with the NFL-BIOTIN-Au-NPs nanoparticle at too pM, after irradiation and internalization of the nanoparticles for 24b.
- the cell viability is expressed in % relative to the cell viability of the untreated cells.
- FIG. 11 represents the cell viability of F98 cells, treated with the peptide alone (NFL-BIOT) at 0.1 pM, with the PEG-AuNP nanoparticle (AuNPs) at 100 pM and with the NFL-BIOTIN-Au-NPs nanoparticle at too pM, after irradiation and internalization of the nanoparticles for 48b.
- the cell viability is expressed in % relative to the cell viability of the untreated cells.
- Figure 12 shows the in vitro mitochondrial activity of rat glioblastoma cells (F98) (cells) as a control, of F98 cells treated with colchicine (Col, 1 ⁇ g/mL). as a positive control and F98 cells treated for 24 hours with PEG-AuNPs, BIOT-TAT-PEGAuNPs and BIOT-VIM-PEG-AuNPs nanoparticles at different concentrations (o, 50, 100, 250, 500 or 1000 pmol/L) .
- Mitochondrial activity was evaluated by the MTS test. The experiments were performed at least in triplicates. The symbol # signifies no cells present at the end of the incubation treatment. Data represent mean ⁇ standard error relative to activity of control F98 cells. Statistical analysis was performed with Student's t test (*p ⁇ 0.05 and ***p ⁇ 0.001).
- Figure 13 shows the in vitro mitochondrial activity of rat glioblastoma cells (F98) as control, of F98 cells treated with colchicine (Col, 1 ⁇ g/mL) as positive control and of F98 cells treated for 72 hours with PEG-AuNPs, BIOT-TAT-PEGAuNPs and BIOT-VIM-PEG-AuNPs nanoparticles at different concentrations (0, 50, 100, 250, 500 or 1000 pmol/L). Mitochondrial activity was assessed by the MTS test. The experiments were performed at least in triplicates. The symbol # signifies no cells present at the end of the incubation treatment. Data represent mean ⁇ standard error relative to activity of control F98 cells. Statistical analysis was performed with Student's t test (*p ⁇ 0.05 and ***p ⁇ 0.001).
- Figure 14 shows a transmission electron microscopy image illustrating the internalization of gold nanoparticles (PEG-AuNPs) in rat glioblastoma (F98) cells.
- the F98 cells were treated with the nanoparticles at 250 pmol/L for 24 hours.
- N for nucleus and V for vacuoles.
- Figure 15 shows a transmission electron microscopy image illustrating the internalization of gold nanoparticles (PEG-AuNPs) coupled with the peptide TAT-BIOTIN (BIOT-TAT-PEGAuNPs) in rat glioblastoma cells (F98).
- the F98 cells were treated with the nanoparticles at 250 pmol/L for 24 hours.
- N for nucleus and V for vacuoles.
- FIG. 16 represents a transmission electron microscopy image illustrating the internalization of gold nanoparticles (PEG-AuNPs) coupled with the VIM-BIOTIN peptide (BIOT-VIM-PEGAuNPs) in rat glioblastoma cells (F98).
- F98 cells have were treated with the nanoparticles at 250 umol/L for 24 hours.
- N for nucleus and V for vacuoles.
- Figure 17 represents the average number of vacuoles containing more than 20 gold nanoparticles in F98 cells incubated for 24 hours with 250 pmol/L of PEG-AUNPs nanoparticles (black bar), BIOT-TAT-PEG-AUNPs nanoparticles (dark gray bar), and BIOT-VIM-PEG-AuNPs nanoparticles (light gray bar). Counting of nanoparticles is done manually on electron microscopy images.
- the inventors synthesized and characterized NFL-BIOTIN-PEG-AuNPs gold nanoparticles according to the invention according to the preceded below.
- the gold nanoparticles are mainly prepared by reduction of chloroauric acid (HAUC1 4 , Sigma-Aldrich) at a concentration of 1 mmol/L.
- PEG-COOH 600 Poly-Ethylene-Glycol dicarboxylic, Sigma-Aldrich
- the products of each synthesis step are stored at 27-29°C and characterized by UV-visible spectroscopy, Raman spectroscopy and transmission electron microscopy (TEM).
- the NFL-BIOTIN-PEG-AuNPs solution was centrifuged at 10,000 rpm 3 times for 10 min, then the supernatant was discarded. The pellet was redispersed in an equivalent amount of water. This was repeated twice to remove excess dicarboxylic PEG not conjugated to the NFL-BIOTIN peptide.
- Raman spectra were recorded using an Xplora Raman microspectrometer (Horiba Scientifics) and processed using Labspec software.
- the spectrometer was tuned with a HeNe (Helium-Neon) laser at 66o nm, a CCD camera for data acquisition and an optical filter set to too % for a laser power of 8 mW and a grating of 6oo lines.
- HeNe Helium-Neon
- the zeta potential of NFL-BIOTIN-PEG-AuNPs dispersed in water was measured using the electrophoretic mode of a Zetasizer NanoZS (Malvern Instruments Ltd, Malvern, UK).
- the average hydrodynamic diameters of NFL-BIOTIN-PEG-AuNPs nanoparticles dispersed in water were characterized using nanoparticle tracking analysis.
- NanoSight Malvern Instruments Ltd
- this equipment uses the properties of light scattering and Brownian motion to obtain particle size distributions of samples in liquid suspension.
- the measurement was performed using an NS500 system equipped with a 405 nm laser, with version 3.0.
- Six sixty-second videos were recorded at a sufficient nanoparticle concentration to achieve a minimum of 200 completed tracks per video for statistical significance. Data was recorded in ⁇ standard deviation mode.
- the gold nanoparticles complexed or not with the NFL-BIOTIN peptide were observed by transmission electron microscopy. For this, 2 pL of samples were deposited on 150-mesh copper grids, themselves covered with a film of Formvar for 1 min. The grids were then contrasted with 2% uranyl acetate for 1 min. The samples were observed with a Jeol microscope (model JEM-1400 with an accelerating voltage of 120 kV; Japan) equipped with a model 832 Orius SC-1000 camera from Gatan.
- the complexation of HAuCl 4 with the NFL-BIOTIN peptide could be observed with a band at 300 nm which represents HAuCl 4 and a band at 280 nm representing the NFL-BIOTIN peptide (see FIG. 1).
- a UV-visible band at 525 nm representing the plasmon band of NFL-BIOTIN-PEG-AuNPs nanoparticles was observed.
- PEG-AuNPs pegylated gold nanoparticles complexed or not with the NFL-BIOTIN peptide were observed under a transmission electron microscope. These observations make it possible to note a difference in the shape of the nanoparticles in the absence or in the presence of the NFL-BIOTIN peptide. PEG-AuNPs nanoparticles have a round shape with relatively homogeneous sizes.
- the inventors evaluated the effect of NFL-Biotin-PEG-AuNP gold nanoparticles on two cancer cell lines.
- the two cell lines were cultured in DMEM medium (Dulbecco's Modified Eagle's medium Gibco, Bio-Sciences Ltd, Ireland) supplemented with 10% FBS Fetal Bovine Serum; Sigma-Aldrich), 1% antibiotics (50 IU/mL penicillin and 50 pg/mL streptomycin) and L-glutamine (2 mmol/L).
- DMEM medium Dulbecco's Modified Eagle's medium Gibco, Bio-Sciences Ltd, Ireland
- FBS Fetal Bovine Serum Sigma-Aldrich
- antibiotics 50 IU/mL penicillin and 50 pg/mL streptomycin
- L-glutamine 2 mmol/L
- MTS cell viability tests (abi97010; Abeam, Paris, France) measuring the mitochondrial activity of cells were carried out.
- the cells were seeded in 96-well plates at a rate of 1000 or 3000 cells per well (number of cells variable depending on the duration of the treatment) and were incubated for 24 hours at 37°C and at 5% of C0 2 . Then, the different treatments were brought into contact with the cells: colchicine (1 pg/mL, C9754; Sigma-Aldrich) or concentrations of gold nanoparticles complexed or not with the NFL-BIOTIN peptide (between 50 and 1000 pmol /L) for 24 or 72 hours at 37° C. and 5% C0 2 .
- the cells (MiaPaCa-2 and F98) were seeded in 6-well plates at the rate of 400,000 cells per well and were incubated for 24 hours at 37° C. and at 5% C0 2 . Then, the nanoparticles at 100 or 500 pmol/L without or with the peptide at 0.08 mmol/L were incubated with the cells for 24 or 72 hours. After incubation, the cells were washed with 0.1 mol/L phosphate buffer (pH 7.4) and were fixed overnight at 4°C, with a solution of 2.5% glutaraldehyde in 0.1 mol/L phosphate buffer (pH 7.4). Then, the cells were rinsed with 0.1 mol/L phosphate buffer.
- Cells were then rinsed with distilled water and post-fixed in 1% osmium tetroxide solution for 1 hour. They were then rinsed 3 times for 5 min with water, and incubated for 15 min in 50° ethanol, 15 min in 70° ethanol, 15 min in 95 ° ethanol. and 3 times 30 min in 100° ethanol. Then, they were put in a mixture of 50% ethanol 100°/50% Epon resin (volume/volume) and incubated overnight. The following day, the remaining diluted Epon resin was removed and replaced by a pure Epon bath for 4 hours, then this Epon bath was replaced in turn by another pure Epon bath.
- the plate with the cells in Epon was placed for 24 hours at 37°C, then 24 hours at 45°C and finally 72 hours at 60°C.
- ultrathin sections 60 nm thick were made with a UC7 ultramicrotome (Leica, Wetzlar, Germany) and deposited on 150 Mesh copper grids. The sections were then contrasted with a solution of 3% uranyl acetate in 50° ethanol for 15 min and then rinsed with ultrapure water. The samples were then observed under a Jeol microscope (model JEM-1400 with an acceleration voltage of 120 kV; Japan) equipped with a model 832 Orius SC-1000 camera from Gatan.
- the MiaPaCa-2 and F98 cells were seeded at a density of 200,000 cells/mL in 25 cm 2 culture flasks and were cultured at 37° C. and at 5% C0 2 .
- the cells were then seeded in 96-well plates at a rate of 200 ⁇ l of cells per well, and left for 24 or 48 hours. Then, 50 ⁇ l of medium per well were withdrawn to replace them with the solutions of the nanoparticles which were incubated for 24 hours. The medium was then removed, the cells were washed three times with PBS (Phosphate Buffered Saline), to remove the excess of non-internalized nanoparticles. Then, the same volume of medium per well was added.
- PBS Phosphate Buffered Saline
- Each well of the plate was subjected to an 808 nm laser source with a power of 0.5 W/cm 2 .
- Experiments were made upstream to define the optimal parameters, so as not to risk having any artifact due to the laser parameter.
- the studies were conducted at two times: 5 and 10 min, to determine whether the "time" parameter could have an impact on the results.
- the medium was changed and left for 24 hours, then a cell viability test was performed to verify that the nanoparticles had the same effect on the cells before and after. radiation treatment.
- 1 mL of the solution of nanoparticles was deposited in a tank and using an infrared laser the nanoparticles were heated. A thermal probe then makes it possible to collect the rise in temperature for 15 min.
- colchicine To assess mitochondrial activity, the two cell lines were treated with 1 pg/mL of colchicine or with 0, 50, 100, 250, 500 or 1000 pmol/L of PEG-AuNPs nanoparticles complexed or not with the peptide NFL- BIOTIN for 24 or 72 hours.
- the action of colchicine is to interact with tubulin and disrupt microtubule assembly (Bhattacharyya et al., 2008), which causes cell death. Colchicine therefore serves as a positive control.
- the MTS test showed no effect of PEG-AuNPs, however a decrease in mitochondrial activity was observed from treatment with 500 pmol/L of NFL-BIOTIN -PEG-AuNPs, and a very strong decrease was observed at the dose of 1000 pmol/L ( Figure 4).
- the MTS test shows similar results, namely no effect of PEG-AuNPs, and a decrease in mitochondrial activity from a treatment at 500 pmol/L of NFL-BIOTIN-PEG-AuNPs ( Figure 5).
- MiaPaCa-2 and F98 cells were treated for 72 hours with PEG-AuNPs or with NFL-BIOTIN-PEG-AuNPs at 500 pmol/L.
- Concerning the MiaPaCa-2 cells the nanoparticles without or with peptide enter the cells and mainly in the vacuoles. Some nanoparticles get trapped in spaces between cells.
- cell viability is around 60% for 5 min of irradiation and around 45% for 10 min of irradiation after 24I1 of internalization. In addition, cell viability is about 40% for 5 min irradiation and about 30% for 10 min after 48I1 of internalization.
- the inventors synthesized gold nanoparticles TAT-BIOTIN-PEG-AuNPs and VIM-BIOTIN-PEG-AuNPs according to the invention according to a procedure summarized above similar to the method described in Example 1 above.
- the gold nanoparticles are prepared by reduction of chloroauric acid (HAUC1 4 , Sigma-Aldrich) at a concentration of 1 mmol/L.
- the biotinylated TAT peptide (TAT.48-60 peptide; TAT-BIOTIN- peptide; BIOT-GRKKRRQRRRPPQ-CONH2; Millegen,ière, France) or the biotinylated VIM peptide (VIM-BIOTIN-peptide; BIOT -GGAYVTRSSAVRLRSSVPGVRLLQ-CONH2; Millegen,ière, France) is added. The solution is stirred vigorously for 10 min. The complexation of the peptide with the gold salts HAUC1 4 takes place by chelation.
- PEG-COOH 600 Poly-Ethylene-Glycol dicarboxylic, Sigma-Aldrich
- a reducing agent NaBH 4 (Sodium tetrahydruroborate, Sigma-Aldrich) is added, thus reducing the Au 3+ ions to neutral gold atoms (Au 0 ).
- TAT-BIOTIN-PEG-AuNPs and VIM-BIOTIN-PEG-AuNPs nanoparticles is observed thanks to a color change of the solution from pale yellow to bright pink purple after the addition of the reducing agent.
- the inventors evaluated the effect of gold nanoparticles TAT-BIOTIN-PEG-AuNPs and VIM-BIOTIN-PEG-AuNPs on a cancer cell line.
- the F98 cell line a rat glioblastoma line, obtained from the American Tissue Culture Collection (ATCC) was used.
- the cell line was cultured in DMEM medium (Dulbecco's Modified Eagle's medium; Sigma-Aldrich) supplemented with 10% FBS (F ⁇ tal Bovine Serum; Sigma-Aldrich), 1% antibiotics (penicillin at 50 IU/mL and streptomycin at 50 pg/mL) and L-glutamine (2 mmol/L).
- DMEM medium Dulbecco's Modified Eagle's medium; Sigma-Aldrich
- FBS Fe ⁇ tal Bovine Serum
- antibiotics penicillin at 50 IU/mL and streptomycin at 50 pg/mL
- L-glutamine 2 mmol/L
- MTS cell viability assays (abi97010; Abeam, Paris, France) measuring the mitochondrial activity of cells were been made.
- the F98 cells were seeded in 12-well plates at the rate of 100,000 cells per well and were incubated for 24 hours at 37° C. and at 5% CO2. Then, the PEG- nanoparticles AuNPs (at 500 pmol/L), VIM-BIOTIN-PEG-AuNP (at 250 pmol/L) or TAT-BIOTIN-AuNPs (at 250 ⁇ mol/L) were incubated with the cells for 24 or 72 hours. After incubation, the cells were washed with 0.1 mol/L phosphate buffer (pH 7.4) and were fixed overnight at 4°C, with a solution of 2.5% glutaraldehyde in 0.1 mol/L phosphate buffer (pH 7.4).
- the cells were rinsed with 0.1 mol/L phosphate buffer.
- Cells were then rinsed with distilled water and post-fixed in 1% osmium tetroxide solution for 1 hour. They were then rinsed 3 times for 5 min with water, and incubated for 15 min in 50° ethanol, 15 min in 70° ethanol, 15 min in 95° ethanol. and 3 times 30 min in 100° ethanol. Then, they were put in a mixture of 50% 100° ethanol/50% Epon resin (v/v) and incubated overnight. The following day, the remaining diluted Epon resin was removed and replaced by a pure Epon bath for 4 hours, then this Epon bath was replaced in turn by another pure Epon bath.
- the plate with the cells in Epon was placed for 24 hours at 37°C, then 24 hours at 45°C and finally 72 hours at 60°C.
- ultrathin sections 60 nm thick were made with a UC7 ultramicrotome (Leica, Wetzlar, Germany) and deposited on 150 Mesh copper grids. The sections were then contrasted with a solution of 3% uranyl acetate in 50° ethanol for 15 min and then rinsed with ultrapure water. The samples were then observed under a Jeol microscope (model JEM-1400 with an acceleration voltage of 120 kV; Japan) equipped with a model 832 Orius SC-1000 camera from Gatan.
- F98 cells were treated with 1 pg/mL of colchicine or with 0, 50, 100, 250, 500 or 1000 pmol/L of PEG-AuNPs nanoparticles complexed or not with the VIM-BIOTIN peptide or the TAT-BIOTIN peptide for 24 or 72 hours. Similar to the experiments described in Example 2 above, colchicine was used as a positive control.
- the MTS assay shows similar results for lower concentrations. Indeed, a significant decrease in mitochondrial activity is observed from a treatment with 1000 pmol/L of PEG-AuNPs, 250 pmol/L of TAT-BIOTIN-PEG-AuNPs or 500 pmol/L of VIM -BIOTIN-PEG-AuNPs.
- the strong induced toxicity is found for from 500 pmol/L of TAT-BIOTIN-PEG-AuNPs and also manifests itself from 1000 pmol/L of VIM-BIOTIN-PEG-AuNPs ( Figure 13).
- the F98 cells were treated for 24 hours with the VIM-BIOTIN-PEG-AuNPs or TAT-BIOTIN-PEG-AuNPs nanoparticles at 250 pmol/L.
- Transmission electron microscopy images depict F98 cells treated with PEG-AuNPs ( Figure 14), VIM-BIOTIN-PEG-AuNP ( Figure 15), or TAT-BIOTIN-PEG-AuNPs ( Figure 16) nanoparticles.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2109696 | 2021-09-15 | ||
| PCT/EP2022/075636 WO2023041639A2 (fr) | 2021-09-15 | 2022-09-15 | Nanoparticules hybrides |
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| Publication Number | Publication Date |
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| EP4401710A2 true EP4401710A2 (fr) | 2024-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| EP22802899.9A Withdrawn EP4401710A2 (fr) | 2021-09-15 | 2022-09-15 | Nanoparticules comprenant au moins un sel metallique et au moins une peptide |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250228965A1 (fr) |
| EP (1) | EP4401710A2 (fr) |
| CN (1) | CN119212686A (fr) |
| WO (1) | WO2023041639A2 (fr) |
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| GB2510587B (en) * | 2013-02-07 | 2020-05-20 | Orthopaedic Res Uk | Biospecific agents for bone |
| GB201322396D0 (en) * | 2013-12-18 | 2014-02-05 | Univ Nottingham | Transduction |
| WO2018127912A1 (fr) * | 2017-01-03 | 2018-07-12 | Yeda Research And Development Co. Ltd. | Traceurs d'irm comprenant des nanofluorures inorganiques |
| CN111374960A (zh) * | 2018-12-29 | 2020-07-07 | 上海原子科兴药业有限公司 | 一种egfr受体靶向肿瘤诊治放射性纳米颗粒及其制备方法 |
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- 2022-09-15 WO PCT/EP2022/075636 patent/WO2023041639A2/fr not_active Ceased
- 2022-09-15 US US18/692,585 patent/US20250228965A1/en not_active Abandoned
- 2022-09-15 EP EP22802899.9A patent/EP4401710A2/fr not_active Withdrawn
- 2022-09-15 CN CN202280074396.7A patent/CN119212686A/zh active Pending
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| WO2023041639A3 (fr) | 2023-05-19 |
| WO2023041639A2 (fr) | 2023-03-23 |
| CN119212686A (zh) | 2024-12-27 |
| US20250228965A1 (en) | 2025-07-17 |
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