WO2014138186A1 - Systèmes d'administration bi-composant bioorthogonal pour l'internalisation améliorée de produits nanothérapeutiques - Google Patents
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- WO2014138186A1 WO2014138186A1 PCT/US2014/020620 US2014020620W WO2014138186A1 WO 2014138186 A1 WO2014138186 A1 WO 2014138186A1 US 2014020620 W US2014020620 W US 2014020620W WO 2014138186 A1 WO2014138186 A1 WO 2014138186A1
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Definitions
- Targeted delivery of nanocarriers offers a great promise to significantly improve the efficacy of traditional cytotoxic cancer therapy while reducing its systemic side effects.
- Important features of targeted nanocarriers include chemical stability, high affinity to target sites, low non-specific interactions, optimal pharmacokinetics, and high drug loading capacity.
- a traditional strategy to develop targeted nanocarriers utilizes cytotoxic antibody- drug conjugates (ADCs) where chemotherapeutics are directly attached to the target-specific antibody. This emerging new class of nanoscale therapeutic agents is currently used clinically for targeted therapy of cancer cells that overexpress a suitable surface receptor.
- ADCs cytotoxic antibody- drug conjugates
- the HER2 receptor regulates multiple physiological pathways including cell proliferation and differentiation.
- the HER2 receptor is also known for its poor internalization capability, even after trastuzumab binding and subsequent heterodimerization, possibly due to localization of the receptor in membrane protrusion or/and in lipid raft areas where it has poor contact with the lipid bilayer.
- the humanized anti-HER2 monoclonal antibody (mAb), trastuzumab (Herceptin ® ) is used as a first line treatment for HER2/wew positive breast cancers.
- the cytotoxic mechanism of trastuzumab includes the inhibition of P13K/Akt and Ras/MAPK signaling pathways leading to cell cycle arrest.
- approximately 50% of patients with HER2 -positive disease do not benefit from trastuzumab or become refractory to it even though the HER2 level remains high.
- T-DM1 trastuzumab-emtansine conjugate
- T-DM1 trastuzumab-emtansine conjugate
- the direct conjugation of chemotherapeutics to mAb can reduce the in vivo therapeutic index, by reducing the binding affinity of the antibody with targeted receptors.
- antibody conjugation does not enhance the ADC internalization and results in the systemic toxicity due to long systemic circulation.
- thrombocytopenia in which the blood has a lower than normal number of platelets, has been observed in a small number of patients treated with ADCs.
- the present invention provides a composition comprising a molecule of formula I:
- Ab is a monoclonal antibody to a target of interest
- (Peg a -Az) is a polyethylene glycol chain containing a terminal azide (Az) functional group linked to the Ab by the other end
- a is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24
- b is an integer corresponding to the number of (Peg a -Az) groups covalently and directly linked to the Ab in a range from 1-30.
- the present invention provides a composition comprising a molecule of formula II:
- Alb denotes albumin (bovine serum albumin, human serum albumin or other similar and biocompatible proteins and polymers);
- CTX is a chemotherapeutic agent covalently and directly linked to Alb and x is an integer corresponding to the number of C7 molecules attached per Alb in a range from 1-6;
- (Peg favor-DBCO) is a polyethylene glycol chain containing a terminal dibenzylcyclooctyne (DBCO) functional group linked to the Alb by the other end; wherein n is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24; and y is an integer corresponding to the number of (Peg perennial-DBCO) groups covalently and directly linked to the Alb in a range from 5- 20.
- albumin bovine serum albumin, human serum albumin or other similar and biocompatible proteins and polymers
- CTX is a chemotherapeutic agent covalently and directly linked to Alb and x is an integer corresponding
- the present invention provides a composition comprising a molecule of formula III: Ab(Peg a -Az) b (Fl) c (Ill);
- Ab is a monoclonal antibody to a target of interest
- (Peg a -Az) is a polyethylene glycol chain containing a terminal azide (Az) functional group linked to the Ab by the other end
- a is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24
- b is an integer corresponding to the number of (Peg a -Az) groups covalently and directly linked to the Ab in a range from 1-30
- Fl is a first fluorophore covalently and directly linked to the Ab
- c is an integer corresponding to the number of Fl fluorophores attached per Ab in a range from 1-5.
- the present invention provides a composition comprising a molecule of formula IV:
- Alb denotes albumin (bovine serum albumin, human serum albumin, or other similar and biocompatible proteins and polymers);
- CTX is a chemotherapeutic agent covalently and directly linked to Alb and x is an integer corresponding to the number of CT molecules attached per Alb in a range from 1-6;
- (Peg favor-DBCO) is a polyethylene glycol chain containing a terminal DBCO functional group, wherein n is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24; y is an integer corresponding to the number of (Peg perennial-DBCO) groups covalently and directly linked to the Alb in a range from 5-20; and
- F2 is a second fluorophore covalently and directly linked to the Alb, and z is an integer corresponding to the number of fluorophores attached per Alb in a range from 1-5.
- the present invention provides a composition comprising a molecule of formula V:
- Ab is a monoclonal antibody to a target of interest
- TCO is a iraws-cyclooctene functional group linked to the Ab by the other end
- d is an integer corresponding to the number TCO groups covalently and directly linked to the Ab in a range from 5-6.
- the present invention provides a composition comprising a molecule of formula VI:
- Alb(CTX) y (Peg n -Tt) z (VI); wherein Alb denotes albumin (bovine serum albumin, human serum albumin or other similar and biocompatible proteins and polymers); CTX is a chemotherapeutic agent covalently and directly linked to Alb and y is an integer corresponding to the number of C7 molecules attached per Alb in a range from 1-6;
- (Peg perennial-Tt) is a polyethylene glycol chain containing terminal tetrazine (Tt) functional groups linked to the Alb by the other end; wherein n is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24; and z is an integer corresponding to the number of (Peg perennial-Tt) groups covalently and directly linked to the Alb in a range from 5-20.
- the present invention provides a composition comprising a molecule of formula VII:
- Ab is a monoclonal antibody to a target of interest
- TCO is a iraws-cyclooctene functional group linked to the Ab by the other end; wherein d is an integer corresponding to the number TCO; and Fl is the first fluorophore covalently and directly linked to the Ab, and e is an integer corresponding to the number of F 1 fluorophores attached per Ab in a range from 1-5.
- the present invention provides a composition comprising a molecule of formula VIII:
- Alb denotes albumin (bovine serum albumin, human serum albumin or other similar and biocompatible proteins and polymers);
- CTX is a chemotherapeutic agent covalently and directly linked to Alb and y is an integer corresponding to the number of CT molecules attached per Alb in a range from 1-6;
- (Pegschreib-Tt) is a polyethylene glycol chain containing terminal tetrazine (Tt) functional groups linked to the Alb by the other end; wherein n is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24;
- z is an integer corresponding to the degree of functionalization of (Peg-Tt) groups covalently and directly linked to the Alb in a range from 5-20;
- F2 is the second fluorophore covalently and directly linked to the Alb, and
- v is an integer corresponding to the number of F2 fluorophores attached per Alb in a range from 1-5.
- the present invention provides a composition for the diagnosis and/or treatment of a disease comprising: a composition of formula I and a composition of formula II.
- the present invention provides a composition for the diagnosis or treatment of a disease comprising: a composition of formula III and a composition of formula IV; wherein F 1 and F2 cannot be the same.
- the present invention provides a composition for the diagnosis and/or treatment of a disease comprising: a composition of formula V and a composition of formula VI.
- the present invention provides a composition for the diagnosis or treatment of a disease comprising: a composition of formula VII and a composition of formula VIII; wherein F 1 and F2 cannot be the same.
- the present invention provides a method of treatment of breast cancer in a subject comprising: a) administering to the subject a therapeutically effective amount of a composition of formula I or III or V, or VII, wherein Ab is trastuzumab (or oxher d specified above) and optionally, Fl is a first fluorescent dye (eg.
- Figure 1 illustrates the internalization strategy and formulation of components for in vitro study
- (la) Two-component delivery strategy via immuno-conjugation between trastuzumab on HER2 overexpressing cell surface, bioorthogonal multiple "click” reactions between azide functionality in trastuzumab and strained dibenzylcyclooctyne in albumin on cell surface followed by cluster formation and internalization
- (lb) Modification of trastuzumab.
- Antibody was first substituted by PEGylated azide using NHS-PEG 4 -Azide followed by fluorescent labeling to obtain Tz(Peg 4 -Az) x (Rhod) y .
- Albumin was first functionalized with PEGylated strained dibenzylcyclooctyne using NHS- PEG4-DBCO followed by fluorescent labeling to obtain Alb(Peg 4 -Az) x (Alexa488) y .
- Figure 2 illustrates the cell images of two-component delivery systems.
- FIG. 3 illustrates the formulation, imaging, and intracellular delivery of drug conjugated two-component delivery system.
- (3a) Synthesis of sulfo-NHS-succinate paclitaxel. Following the literature procedure, paclitaxel was first, functionalized with a carboxylate linker and derivatized to sulfo-NHS functionality increasing the solubility in aqueous media.
- (3b) Formulation of paclitaxel conjugated BSA. (i) Substitution of paclitaxel on albumin, (ii) DBCO functionalization, (iii) Fluorescent dye labeling. (3c) Image-guided in vitro therapy, Control, two-component delivery with unmodified trastuzumab on BT-474 cells. Treated, in vitro click therapy on BT-474 cells.
- FIG. 4 is a series of graphs depicting the toxicological study.
- (4a) Cells were treated with each component alone and cell viability was given as a percentage with respect to cells with no treatment. Cells were treated with unmodified trastuzumab, Tz(Peg 4 - Az) 2 o(Rhod)2, or Tz(Peg4-Az) 2 9(Rhod)2. Unmodified Tz only shows a significant therapeutic effect even after incubation for 30 minutes. Cells were also treated with modified BSA, Alb(CTX) 2 .
- Figure 5 shows schematics of the in vivo click therapy based on iraws-cyclooctene (TCO) and Tetrazine (Tt) based bioorthogonal click chemistry.
- Figure 6 depicts the formulation of components for in vivo study. (6a)
- TCO iraws-cyclooctene
- Tt Tetrazine
- FIG. 7 depicts the in vivo click therapy.
- 7a Mice were first injected with one of first components, saline (untreated control), Tz(Fl) 1 (treated control), and Tz(TCO) 6 (Fl) 1 (Treated). After 6-7 hours of blood clearance of first component, saline (untreated control) and Alb(CTX) 2.6 (Peg 5 -Tt)i 5 (F2)i (treatment control and treatment) was injected as the second component.
- 7d Change of body weights of mice during the treatment.
- the present invention provides a new strategy for an improved target-specific drug delivery that utilizes enhanced
- This novel two-step/two- component system for intracellular delivery of therapeutics is based on the induced internalization of cross-linked and clustered mAb to target receptors of interest, including, for example, HER2 receptors.
- the system provides target-specific, and optionally, image-guided drug delivery, and highly efficient internalization and accumulation of chemotherapeutics in the target cells of interest.
- the present invention provides in situ complexation of two or more delivery components by the bioorthogonal click reactions between mAb functionalized with multiple azide groups and nano/macromolecular carriers such as bovine serum albumin functionalized with multiple dibenzylcyclooctyne groups and substituted with chemotherapeutics, such as paclitaxel.
- the present invention provides copper- free, strained-promoted, bioorthogonal click chemistry for therapy.
- the present invention provides in situ complexation of two or more delivery components by the bioorthogonal click reactions between mAb functionalized with /raws-cyclooctene, and nano/macromolecular carriers such as bovine serum albumin functionalized with multiple tetrazine groups and substituted with chemotherapeutics, such as paclitaxel.
- these novel drug compositions and the accompanying delivery systems of the present invention were evaluated in HER2 -positive and negative breast cancer cell lines. It was demonstrated that the inventive click therapy provided herein delivers highly efficient intracellular drug accumulation and substantially increased cytotoxicity for HER2 overexpressing breast cancer cells in comparison to conventional single component or combination therapy, both in vitro and in vivo.
- the present invention provides a composition comprising a molecule of formula I:
- Ab is a monoclonal antibody to a target of interest
- (Peg a -Az) is a polyethylene glycol chain containing a terminal azide (Az) functional group linked to the Ab by the other end
- a is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24
- b is an integer corresponding to the number of (Peg a -Az) groups covalently and directly linked to the Ab in a range from 1-30.
- the term “Ab” means a monoclonal antibody having antigenic specificity for a target antigen of interest.
- the phrase "having antigenic specificity" as used herein means that the monoclonal antibody can specifically bind to and immunologically recognize the antigen.
- the antigen is a cancer antigen.
- the terminal azide functional group is covalently linked to the Fc portion of the Ab.
- the term "other end" when used in describing the linkage of the molecule to the Ab is synonymous with the Fc portion of the antibody molecule, or C-terminal end.
- cancer antigen refers to any molecule (e.g., protein, peptide, lipid, carbohydrate, etc.) solely or predominantly expressed or over-expressed by a tumor cell or cancer cell, such that the antigen is associated with the tumor or cancer.
- the cancer antigen can additionally be expressed by normal, non-tumor, or non-cancerous cells.
- normal, non-tumor, or noncancerous cells are normally expressed by normal, non-tumor, or noncancerous cells.
- the tumor or cancer cells can over-express the antigen or express the antigen at a significantly higher level, as compared to the expression of the antigen by normal, non-tumor, or noncancerous cells.
- the cancer antigen can additionally be expressed by cells of a different state of development or maturation.
- the cancer antigen can be additionally expressed by cells of the embryonic or fetal stage, which cells are not normally found in an adult host.
- the cancer antigen can be additionally expressed by stem cells or precursor cells, which cells are not normally found in an adult host.
- the cancer antigens used in the compositions of the present invention can be an antigen expressed by any cell of any cancer or tumor, including the cancers and tumors described herein.
- the cancer antigen may be a cancer antigen of only one type of cancer or tumor, such that the cancer antigen is associated with or characteristic of only one type of cancer or tumor.
- the cancer antigen may be a cancer antigen (e.g., may be characteristic) of more than one type of cancer or tumor.
- the cancer antigen may be expressed by both breast and prostate cancer cells and not expressed at all by normal, non-tumor, or non-cancer cells.
- the monoclonal antibody of the invention can be a recombinant antibody.
- "recombinant antibody” refers to a recombinant (e.g., genetically engineered) protein comprising at least one of the polypeptides of the invention and a polypeptide chain of an antibody, or a portion thereof.
- the polypeptide of an antibody, or portion thereof can be a heavy chain, a light chain, a variable or constant region of a heavy or light chain, a single chain variable fragment (scFv), or an Fc, Fab, or F(ab)2 ! fragment of an antibody, etc.
- polypeptide chain of an antibody, or portion thereof can exist as a separate polypeptide of the recombinant antibody.
- the polypeptide chain of an antibody, or portion thereof can exist as a polypeptide, which is expressed in frame (in tandem) with the polypeptide of the invention.
- the polypeptide of an antibody, or portion thereof can be a polypeptide of any antibody or any antibody fragment, including any of the antibodies and antibody fragments described herein.
- Suitable methods of making antibodies are known in the art. For instance, standard hybridoma methods are described in, e.g., K5hler and Milstein, Eur. J. Immunol, 5, 511-519 (1976), Harlow and Lane (eds.), Antibodies: A Laboratory Manual, CSH Press (1988), and C.A. Janeway et al. (eds.), Immunobiology, 5 th Ed., Garland Publishing, New York, NY (2001)). Alternatively, other methods, such as EBV-hybridoma methods (Haskard and Archer, J. Immunol.
- Antibodies can be produced by transgenic mice that are transgenic for specific heavy and light chain immunoglobulin genes. Such methods are known in the art and described in, for example U.S. Patents 5,545,806 and 5,569,825, and Janeway et al, supra.
- the invention also provides antigen binding portions of any of the antibodies described herein.
- the antigen binding portion can be any portion that has at least one antigen binding site, such as Fab, F(ab')2, dsFv, sFv, diabodies, and triabodies.
- a single-chain variable region fragment (sFv) antibody fragment which consists of a truncated Fab fragment comprising the variable (V) domain of an antibody heavy chain linked to a V domain of a light antibody chain via a synthetic peptide, can be generated using routine recombinant DNA technology techniques (see, e.g., Janeway et al, supra).
- dsFv disulfide-stabilized variable region fragments
- Antibody fragments of the invention are not limited to these exemplary types of antibody fragments.
- the Ab used in the compositions and methods of the present invention include, for example, trastuzumab or another monoclonal antibody such as anti- HER2 mAb (eg. Pertuzumab), anti-PSMA mAb (eg. J591, J415, Hybritech PEQ226.5 and PM2J004.5), and anti-CD30 mAb (eg. Brentuximab).
- trastuzumab or another monoclonal antibody such as anti- HER2 mAb (eg. Pertuzumab), anti-PSMA mAb (eg. J591, J415, Hybritech PEQ226.5 and PM2J004.5), and anti-CD30 mAb (eg. Brentuximab).
- a number of other therapeutic monoclonal antibodies have been approved for use in humans, and can be used in the present invention, including, but not limited to, alemtuzumab, bevacizumab, vedotin, cetuximab, gemtuzumabozogamicin, ibritumomabtiuxetan, ofatumumab, panitumumab, rituximab, and tositumomab.
- (Peg a -Az) refers to a polyethylene glycol molecule chain containing a terminal azide (Az) functional group.
- the Ab is linked to the Peg moiety on a first end through an amide linkage and it is linked on its second end to the azide moiety covalently to the terminal carbon of the Peg molecule chain.
- a is an integer corresponding to the number of covalently linked ethylene glycol units in a polyethylene glycol chain in a range from 0-24. In some embodiments about 4 to 10 ethylene glycol units are used.
- b is an integer corresponding to the number of molar equivalents of (Peg a -Az) groups covalently and directly linked to a molar equivalent of Ab in a range from 1-30. In some embodiments between 10 and 20 (Peg a -Az) groups are used.
- the present invention provides a composition comprising a molecule of formula II: Alb(CTX) x (Pegn-DBCO) y (II);
- Alb denotes albumin (bovine serum albumin, human serum albumin or other similar and biocompatible proteins and polymers);
- CTX is a chemotherapeutic agent covalently and directly linked to Alb and x is an integer corresponding to the number of molar equivalents of CTX molecules attached per molar equivalent oiAlb in a range from 1-6;
- (Peg cont-DBCO) is a polyethylene glycol chain containing a terminal dibenzylcyclooctyne(D5COj functional group linked to the Alb by the other end; wherein n is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24; and y is an integer corresponding to the number of molar equivalents of (Peg n -DBCO) groups covalently and directly linked to a molar equivalent oiAlb in a range from 5-20.
- Alb in the compositions and methods of the present invention denotes the protein albumin, including, for example, bovine serum albumin and human serum albumin. It will be understood by those of skill in the art that other similar and biocompatible proteins and polymers can be used with the inventive compositions such as dextran, chitosan, polylactic-co-glycolic acid (PLGA), etc. In some embodiments, the albumin used is human.
- DBCO means a strained cyclooctyne molecule dibenzylcyclooctyne.
- DIBO dibenzocyclooctyne
- CTX means a chemotherapeutic agent covalently and directly linked to the albumin or biocompatible protein.
- the term can be synonymous with the term “biologically active agent.”
- the biologically active agent may vary widely with the intended purpose for the composition.
- active is art-recognized and refers to any moiety that is a biologically, physiologically, or pharmacologically active substance that acts locally or systemically in a subject.
- Examples of biologically active agents that may be referred to as "drugs", are described in well-known literature references such as the Merck Index, the Physicians' Desk Reference, and The Pharmacological Basis of Therapeutics, and they include, without limitation, medicaments; substances used for the treatment, prevention, diagnosis, cure or mitigation of a disease or illness; substances which affect the structure or function of the body; or pro-drugs, which become biologically active or more active after they have been placed in a physiological environment.
- the term "CTX" means an anti-cancer or anti-neoplastic agent.
- antineoplastic agents include alkylating agents, nitrogen mustard alkylating agents, nitrosourea alkylating agents, antimetabolites, purine analog antimetabolites, pyrimidine analog antimetabolites, hormonal antineoplastics, natural antineoplastics, such as asparaginase, busulfan, carboplatin, cisplatin, daunorubicin, doxorubicin, fluorouracil, gemcitabine, hydroxyurea, methotrexate, paclitaxel, rituximab, vinblastine, vincristine, etc.
- chemotherapeutic agent generally includes pharmaceutically or therapeutically active compounds that work by interfering with DNA synthesis or function in cancer cells. Based on their chemical action at a cellular level, chemotherapeutic agents can be classified as cell- cycle specific agents (effective during certain phases of cell cycle) and cell-cycle nonspecific agents (effective during all phases of cell cycle). Without being limited to any particular example, examples of chemotherapeutic agents can include alkylating agents, angiogenesis inhibitors, aromatase inhibitors, antimetabolites, anthracyclines, antitumor antibiotics, monoclonal antibodies, platinums, topoisomerase inhibitors, and plant alkaloids. In some embodiments CTX is selected from the group consisting of taxanes (e.g. paclitaxel, docetaxel), antimetabolites (e.g. fluorouracil), intercalation and inhibitory drugs (e.g.
- taxanes e.g. paclitaxel, docetaxel
- antimetabolites e.g. fluorour
- the number of molar equivalents of CTX per unit oiAlb is in the range of 1 to 6. In some embodiments, the number of molar equivalents of CTX per unit of Alb is between 2 to 3.
- n is an integer corresponding to the number of covalently linked ethylene glycol units in a polyethylene glycol chain in a range from 0-24. In some embodiments about 4 to 10 ethylene glycol units are used.
- y is an integer corresponding to the number of molar equivalents of (Peg Berry-DBCO) groups covalently and directly linked to a molar equivalent oiAlb in a range from 5-20. In some embodiments, y is in the range of about 14 to 15.
- the present invention provides a composition comprising a molecule of formula III: Ab(Peg a -Az) b (Fl) c (Ill);
- molecule is defined the same as formula I, with the addition of a fluorophore (Fl), which is covalently and directly linked to the Ab, and wherein c is an integer corresponding to the number of molar equivalents of fluorophores attached per molar equivalent of Ab in a range from 1-5.
- Fl fluorophore
- the present invention provides a composition comprising a molecule of formula IV:
- molecule is defined the same as formula II, with the addition of a fluorophore (F2), a second fluorophore covalently and directly linked to the Alb, and z is an integer corresponding to the number of molar equivalents of fluorophores attached per molar equivalent oiAlb in a range from 1-5.
- F2 fluorophore
- z is an integer corresponding to the number of molar equivalents of fluorophores attached per molar equivalent oiAlb in a range from 1-5.
- the term "fluorophore” is synonymous with "imaging agent.”
- the fluorophore is a fluorescent dye.
- the dyes may be emitters in the visible or near-infrared (MR) spectrum.
- MR near-infrared
- Known dyes useful in the present invention include carbocyanine, indocarbocyanine, oxacarbocyanine, thuicarbocyanine and merocyanine, polymethine, coumarine, rhodamine, xanthene, fluorescein, boron-dipyrromethane
- the fluorophore is selected from the group consisting of: rhodamine, Alexa488 or clinically approved dyes such as ICG, Cy5.5, Cy7, Irdye800 CW, ProSense 750).
- NIR dyes which are active in the NIR region are known in biomedical applications. However, there are only a few NIR dyes that are readily available due to the limitations of conventional dyes, such as poor hydrophilicity and photostability, low quantum yield, insufficient stability and low detection sensitivity in biological system, etc. Significant progress has been made on the recent development of NIR dyes (including cyanine dyes, squaraine, phthalocyanines, porphyrin derivatives and BODIPY (borondipyrromethane) analogues) with much improved chemical and photostability, high fluorescence intensity and long fluorescent life. Examples of R dyes include cyanine dyes (also called as
- polymethine cyanine dyes are small organic molecules with two aromatic nitrogen- containing heterocycles linked by a polymethine bridge and include Cy5, Cy5.5, Cy7 and their derivatives.
- Squaraines (often called Squarylium dyes) consist of an oxocyclobutenolate core with aromatic or heterocyclic components at both ends of the molecules, an example is KSQ-4-H.
- Phthalocyanines are two-dimensional 187t-electron aromatic porphyrin derivatives, consisting of four bridged pyrrole subunits linked together through nitrogen atoms.
- BODIPY (borondipyrromethane) dyes have a general structure of 4,4'-difluoro- 4- bora-3a, 4a-diaza-s-indacene) and sharp fluorescence with high quantum yield and excellent thermal and photochemical stability.
- Imaging agents which are attached to compositions of the present invention can include PET, SPECT, and MRI imaging agents.
- the most widely used agents include branched chelating agents such as di-ethylene tri-amine penta-acetic acid (DTPA), 1,4,7, 10- tetra-azacyclododecane-l,4,7, 10-tetraacetic acid (DOTA) and their analogs for complexation with metals such as Gd and Cu.
- Chelating agents such as di-amine dithiols, activated mercaptoacetyl-glycyl-glycyl-gylcine (MAG3), and hydrazidonicotinamide (HY IC), are able to chelate metals like 99m Tc and 186 Re.
- the present invention provides compositions wherein the fluorophore comprises a metal isotope suitable for imaging.
- isotopes useful in the present invention include Tc-94m, Tc-99m, In-11 1, Ga-67, Ga-68, Y-86, Y-90, Lu-177, Re-186, Re-188, Cu-64, Cu-67, Co-55, Co-57, Sc-47, Ac-225, Bi-213, Bi-212, Pb-212, Sm-153, Ho-166, or Dy-166, 1-125, 1-124, 1-123, F-18.
- the present invention provides a composition comprising a molecule of formula V:
- TCO iraws-cyclooctene functional group linked to the Ab by the other end
- d is an integer corresponding to the number degrees of substitution of TCO. It is understood by those of ordinary skill that iraws-cyclooctene is another click-chemistry reagent.
- the present invention provides a composition comprising a molecule of formula VI:
- Alb(CTX) y (Peg n -Tt) z (VI); wherein Alb denotes albumin (bovine serum albumin, human serum albumin or other similar and biocompatible proteins and polymers); CTX is a chemotherapeutic agent covalently and directly linked to Alb and y is an integer corresponding to the number of C7 molecules attached per Alb in a range from 1-6;
- (Peg staggering-Tt) is a polyethylene glycol chain containing a terminal tetrazine (Tt) functional group linked to the Alb by the other end; wherein n is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24; and z is an integer corresponding to the degree of functionalization of Peg-Tt groups covalently and directly linked to the Alb in a range from 5-20.
- the present invention provides a composition comprising a molecule of formula VII:
- Ab is a monoclonal antibody to a target of interest
- TCO is a iraws-cyclooctene functional group linked to the Ab by the other end; wherein d is an integer corresponding to the number degrees of substitution of TCO; and Fl is the first fluorophore covalently and directly linked to the Ab, and e is an integer corresponding to the number of fluorophores attached per Ab in a range from 1-5.
- the present invention provides acomposition comprising a molecule of formula VIII:
- Alb denotes albumin (bovine serum albumin, human serum albumin or other similar and biocompatible proteins and polymers);
- CTX is a chemotherapeutic agent covalently and directly linked to Alb and y is an integer corresponding to the number of CT molecules attached per Alb in a range from 1-6;
- Peg contun-Tt is a polyethylene glycol chain containing a terminal tetrazine (Tt) functional group linked to the Alb by the other end; wherein n is an integer corresponding to the number of ethylene glycol units in a polyethylene glycol chain in a range from 0-24;
- z is an integer corresponding to the degree of functionalization of Peg-Tt groups covalently and directly linked to the Alb in a range from 5-20;
- F2 is the second fluorophore covalently and directly linked to the Alb, and
- v is an integer corresponding to the number of fluorophores attached per Alb in a range from 1-5.
- the present invention provides compositions for diagnosis or treatment of a disease comprising the compositions of formula V and VI.
- the present invention provides a composition for the diagnosis or treatment of a disease comprising the composition of formula III and the composition of formula IV; wherein F 1 and F2 cannot be the same.
- the present invention provides a composition for the diagnosis or treatment of a disease comprising the composition of formula VII and the composition of formula VIII; wherein F 1 and F2 cannot be the same.
- the present invention provides a
- compositions comprising one or compositions described herein and a pharmaceutically acceptable carrier.
- the present invention provides a method of imaging and/or inducing cytotoxicity in a host cell or population of cells comprising administering to the cell or population of cells the compositions described herein, or the pharmaceutical composition described herein, in an amount sufficient to image and/or kill the host cell or population of cells.
- the present invention provides a use of the compositions described herein, in an effective amount, to prepare a medicament, preferably for use as a medicament for treating a disease in a subject.
- the medicament further comprises a pharmaceutically acceptable carrier.
- the medicament further comprises a second therapeutic agent.
- the disease is cancer, and in a preferred embodiment, the disease is breast cancer.
- the present invention provides a method of treatment of breast cancer in a subject comprising: a) administering to the subject a therapeutically effective amount of a composition of formulas I and/or III, and/or V, and/or VII, wherein Ab is trastuzumab (or other Ab specified above) and optionally, F 1 is a first fluorescent dye (e.g., ICG, Cy5.5, Cy7, Ir dye 800 CW, ProSense 750); b) administering to the subject a therapeutically effective amount of a composition of formula II and/or IV and/or VI and/or VIII, wherein Alb is serum albumin (or similar proteins), CTX is paclitaxel (or other chemotherapeutics specified above), and optionally, F2 is a second fluorescent dye specified above; wherein a) and b) are administered consecutively or concurrently.
- F 1 is a first fluorescent dye (e.g., ICG, Cy5.5, Cy7, Ir dye 800 CW, ProSense 750)
- F2 is a
- the first compositions of formulas I, III, V and VII are administered to the cells or the subject first.
- the second compositions of formulas II, IV, VI and VIII are administered to the cells or the subject and the compositions conjugate at the Ab target receptors.
- the amount of time between administration of the first component or composition and the second component or composition can vary.
- the time sufficient for the first component or composition to bind the target can be within 30 minutes up to 5, 6, 7, 8, 10 hours. This is followed by administration of the second component or composition.
- compositions and methods of the present invention described above can also encompass a pharmaceutical composition comprising the compositions and a pharmaceutically acceptable carrier.
- the carriers or diluents used herein may be solid carriers or diluents for solid formulations, liquid carriers or diluents for liquid formulations, or mixtures thereof.
- Solid carriers or diluents include, but are not limited to, gums, starches (e.g., corn starch, pregelatinized starch), sugars (e.g., lactose, mannitol, sucrose, dextrose), cellulosic materials (e.g., microcrystalline cellulose), acrylates (e.g., polymethylacrylate), calcium carbonate, magnesium oxide, talc, or mixtures thereof.
- pharmaceutically acceptable carriers may be, for example, aqueous or non-aqueous solutions, or suspensions.
- non-aqueous solvents are propylene glycol, polyethylene glycol, and injectable organic esters such as ethyl oleate.
- Aqueous carriers include, for example, water, alcoholic/aqueous solutions, cyclodextrins, emulsions or suspensions, including saline and buffered media.
- Parenteral vehicles for subcutaneous, intravenous, intraarterial, or intramuscular injection
- parenteral vehicles include, for example, sodium chloride solution, Ringer's dextrose, dextrose and sodium chloride, lactated Ringer's and fixed oils.
- Formulations suitable for parenteral administration include, for example, aqueous and non-aqueous, isotonic sterile injection solutions, which can contain anti-oxidants, buffers, bacteriostats, and solutes that render the formulation isotonic with the blood of the intended recipient, and aqueous and non-aqueous sterile suspensions that can include suspending agents, solubilizers, thickening agents, stabilizers, and preservatives.
- Intravenous vehicles include, for example, fluid and nutrient replenishers, electrolyte replenishers such as those based on Ringer's dextrose, and the like.
- sterile liquids such as water and oils, with or without the addition of a surfactant and other pharmaceutically acceptable adjuvants.
- water, saline, aqueous dextrose and related sugar solutions, and glycols such as propylene glycols or polyethylene glycol are preferred liquid carriers, particularly for injectable solutions.
- compositions of the invention are exemplary, and are in no way limiting. More than one route can be used to administer the compositions of the present invention, and in certain instances, a particular route can provide a more immediate and more effective response than another route.
- injectable formulations are in accordance with the invention.
- the requirements for effective pharmaceutical carriers for injectable compositions are well-known to those of ordinary skill in the art (see, e.g., Pharmaceutics and Pharmacy Practice, J.B. Lippincott Company, Philadelphia, PA, Banker and Chalmers, eds., pages 238-250 (1982), and ⁇ SHP Handbook on Injectable Drugs, Trissel, 15th ed., pages 622-630 (2009)).
- pharmaceutically active compound or “therapeutically active compound” means a compound useful for the treatment or modulation of a disease or condition in a subject suffering therefrom.
- pharmaceutically active compounds can include any drugs known in the art for treatment of disease indications.
- a particular example of a pharmaceutically active compound is a chemotherapeutic agent.
- the amount or dose of the compositions of the present invention that is administered should be sufficient to effectively target the cell, or population of cells in vivo, such that the imaging of the target cell or population of cells, as well as the cytotoxicity of the compositions can be detected, in the subject over a reasonable time frame.
- the dose will be determined by the efficacy of the particular composition formulation and the location of the target population of cells in the subject, as well as the body weight of the subject to be treated.
- the dose of the compositions of the present invention also will be determined by the existence, nature and extent of any adverse side effects that might accompany the administration of the inventive compositions. Typically, an attending physician will decide the dosage of the compositions with which to treat each individual subject, taking into consideration a variety of factors, such as age, body weight, general health, diet, sex, compound to be administered, route of administration, and the severity of the condition being treated.
- the dose of the compositions of the present invention can be about 0.001 to about 1000 mg/kg body weight of the subject being treated, from about 0.01 to about 100 mg/kg body weight, from about 0.1 mg/kg to about 10 mg/kg, and from about 0.5 mg to about 5 mg/kg body weight.
- the dose of the compositions of the present invention can be at a concentration from about 1 nM to about 10,000 nM, preferably from about 10 nM to about 5,000 nM, more preferably from about 100 nM to about 500 nM.
- inventive methods can provide any amount of any level of treatment or prevention of cancer in a mammal.
- the treatment or prevention provided by the inventive method can include treatment or prevention of one or more conditions or symptoms of the disease, e.g., cancer, being treated or prevented.
- prevention can encompass delaying the onset of the disease, or a symptom or condition thereof.
- the invention further provides a host cell comprising any of the compositions described herein.
- the term "host cell” refers to any type of cell that can contain the inventive compositions.
- the host cell can be a eukaryotic cell, e.g., plant, animal, fungi, or algae.
- the host cell can be a cultured cell or a primary cell, i.e., isolated directly from an organism, e.g., a human.
- the host cell can be an adherent cell or a suspended cell, i.e., a cell that grows in suspension.
- the host cell is preferably a mammalian cell. Most preferably, the host cell is a human cell.
- suitable human host cells can include, but are not limited to, cells of the major organs of the body, including, for example, cells of the lung, including hepatocytes and hepatic stellate cells, cells of the breast, cells of the prostate, cells of the cornea, including corneal epithelial cells, cells of the lung, including lung epithelial cells, and cells of the brain, such as neurons.
- the host cell can be of any cell type, can originate from any type of tissue, and can be of any developmental stage, the host cell preferably is a cancer cell, specifically a breast cancer cell.
- the population of cells can be a heterogeneous population comprising the host cell comprising any of the compositions described, in addition to at least one other cell, e.g., a host cell (e.g., a epithelial cell), which does not comprise any of the compositions, or a cell other than a epithelial cell, e.g., a macrophage, a neutrophil, an erythrocyte, a hepatocyte, a hepatic stellate cell, an endothelial cell, an epithelial cell, a muscle cell, a brain cell, etc.
- the population of cells can be a substantially homogeneous population, in which the population comprises mainly of host cells (e.g., consisting essentially of) comprising the compositions.
- the disease can include cancer.
- Cancer can be any cancer, including any of acute lymphocytic cancer, acute myeloid leukemia, alveolar rhabdomyosarcoma, bone cancer, brain cancer, breast cancer, cancer of the anus, anal canal, or anorectum, cancer of the eye, cancer of the intrahepatic bile duct, cancer of the joints, cancer of the neck, gallbladder, or pleura, cancer of the nose, nasal cavity, or middle ear, cancer of the oral cavity, cancer of the vulva, chronic lymphocytic leukemia, chronic myeloid cancer, colon cancer, esophageal cancer, cervical cancer, gastrointestinal carcinoid tumor.
- the cancer is breast cancer.
- administering means that the one or more compositions of the present invention are introduced into a sample having at least one cell, or population of cells, and appropriate enzymes or reagents, in a test tube, flask, tissue culture, chip, array, plate, microplate, capillary, or the like, and incubated at a temperature and time sufficient to permit uptake of the at least one compositions of the present invention into the cytosol through the click-chemical reactions occurring on the cell membrane.
- administering means that at least one or more compositions of the present invention are introduced into a subject, preferably a subject receiving treatment for a disease, and the at least one or more compositions are allowed to come in contact with the one or more disease related cells or population of cells of interest in vivo.
- the term “subject” refers to any mammal, including, but not limited to, mammals of the order Rodentia, such as mice and hamsters, and mammals of the order Logomorpha, such as rabbits. It is preferred that the mammals are from the order Carnivora, including Felines (cats) and Canines (dogs). It is more preferred that the mammals are from the order Artiodactyla, including Bovines (cows) and Swines (pigs) or of the order Perssodactyla, including Equines (horses). It is most preferred that the mammals are of the order Primates, Ceboids, or Simoids (monkeys) or of the order Anthropoids (humans and apes). An especially preferred mammal is the human.
- ATCC American Type Culture Collection
- ATCC American Type Culture Collection
- ATCC 46-X media
- FBS FBS
- Third or fourth passages of cells with 70-80% confluency were used for each experiment unless otherwise mentioned.
- paclitaxel and Taxol were purchased from LKT Laboratories, Inc. and Sagent Pharmaceuticals, Inc. respectively.
- Trastuzumab Hereceptin® was purchased from Genentech Inc., or kindly gifted by Dr. Robert Ivkov (The Johns Hopkins School of Medicine) and used after purification.
- Bioconjugation reagents NHS-PEG 4 -Azide and NHS- PEG 4 -DBCO ester were purchased from Thermo Fisher and Click Chemistry Tools respectively. Dry or HPLC grade solvents were purchased from Sigma-Aldrich and used without further purification.
- BT-474 cells were placed in 4-well chamber slides (5x 10 5 cells in 0.5 mL of 46-X medium in each well) and grown for 24-48 hours. Two slides were maintained at 4 °C or 37 °C throughout the experiment. First, cells were incubated with modified trastuzumab (20 /g/mL in DPBS-FBS) for 20 minutes and washed twice with DPBS-FBS (Dulbecco's Phosphate Buffered Saline Solution with 1% Fetal Bovine Serum) to remove the unbound trastuzumab.
- modified trastuzumab (20 /g/mL in DPBS-FBS
- DPBS-FBS Dulbecco's Phosphate Buffered Saline Solution with 1% Fetal Bovine Serum
- modified albumin C-2, 100 /g/mL in DPBS-FBS
- DPBS-FBS modified albumin
- Alexa Fluor 488 labeled albumin without DBCO alkyne was used in controls as the second delivery component.
- Cytotoxic study Her2/wew overexpressing BT-474 (study cell line) and Her2/wew basal level MDA-MB 231 (control cell line) cells were seeded in a 96-well plate at a density of 5x l0 3 cells and incubated at 37 °C in a humidified atmosphere containing 5% C0 2 . After 24 hours, cultured cells treated with or without modified or unmodified trastuzumab (100 pL, 20 /g/mL) and incubated for 30 minutes at 4°C. Cells were washed once with 0.05%
- BSA/DPBS BSA/DPBS and incubated with or without second components, DBCO modified albumin substituted with paclitaxel, or equivalent amount of paclitaxel as Taxol (100 //L, 40 /g/mL).
- Cells were incubated at 37°C for 2 hours, washed once using 0.05% BSA/DPBS and refill with fresh media (200 /L). After the incubation at 37 °C for 72 hours in a humidified atmosphere containing 5% C0 2 , 100 //L from total media was removed and viability of cells was determined using WST-8 assay following the manufactures protocol (10 //L of WST-8 reagent per well with 100 //L of media, incubation at 37° for 4hours, and measuring the absorbance at 450 nm). Each test was quadruplicated per plate and triplicate independent experiments were done for the statistical analysis. The -value ⁇ 0.05 calculated by independent two-sample t-test, is considered as a significant difference between the study groups.
- trastuzumab a pre-targeting, delivery component was functionalized with PEGylated azides.
- the degree of functionalization plays a major role in antibody-receptor binding affinity and the efficiency of the click conjugation.
- the degree of functionalization was determined based on the change of molecular weight measured by MALDI-TOF/MS.
- Functional groups of azides were determined using TAMRA-DIBO via click labeling.
- trastuzumab was used with 20 functional groups attached which gave an optimum cell surface labeling pattern and the click reaction with DBCO
- BSA was first functionalized with approximately 15 units of NHS-PEG 4 -DBCO and labeled with Alexa Fluor 488 (Invitrogen) and obtained and used for the imaging experiments. Imaging experiments were performed at 4 °C and 37 °C to observe the surface labeling and the internalization ( Figure 2).
- HER2 overexpressing BT-474 cells shows a typical cell surface labeling pattern with labeled trastuzumab (control without azide functionalization) at 4 °C and doesn't show significant internalization at 37 °C alone.
- the live cells were incubated at 4 °C and 37 °C and the internalization was observed after incubation of BT-474 cells for 2 hours.
- the control MDA-MB-231 cells show no surface labeling by trastuzumab and negligible level of internalization of second delivery components.
- Tz(Peg4-Az) 2 o(Rhod)2, Tz(Peg4-Az) 2 8(Rhod)2, were used as the pre-targeting first delivery component.
- the second delivery component was formulated by the substitution of paclitaxel (Figure 3a), followed by the DBCO
- the optimized bioorthogonal two-component nanocarrier delivery system can be used for in vivo experiments in preclinical stage.
- Tz Trastuzumab
- TCO iraws-cyclooctene
- NHS-TCO ester reagent No significant decrease of binding affinity of functionalized Tz was detected at the substitution of six groups of TCO.
- Resulted Tz conjugate was labeled by NIR CF-680 fluorophores (Fl) ( Figure 6a).
- the common formula for first components is Tz(TCO) d (Fl) e , where d and e are degree of substitutions of TCO and Fl respectively.
- Alb(CTX) x was substituted with (Pegs-Tt) using NHS-Pegs-Tetrazine reagent followed by labeling with NIR dye CF-750 ( Figure 6b).
- the common formula for the second component is
- mice were injected with first components, saline (group M-l for no treatment control), Tz(Fl)i (group M-2 control treatment, 0.2 mg in 200 ⁇ ⁇ of saline), Tz(TCO) 6 (Fl)i (group M-3 click therapy, 0.2 mg in 200 ⁇ ., of saline).
- mice in group M-l were injected with saline and mice in group M-2 and M-3 were treated with second delivery components Alb(CTX) 2.6 (Peg 5 -Tt)i 5 (F2)i (2.0 mg in 200 ⁇ ., of saline).
- the second and third doses were given on the 14 th and 28 th days. Tumor measurements were taken every 6 th day. The relative growth of tumors was analyzed based on the ratio of tumor size to the initial tumor size ( Figure 7c). The change of body weights of mice was analyzed during the click therapy treatment.
- Tumors of mice in group M-3 treated with TCO/Tt based click therapy exhibited slowest growth rates (Figure 7c). After 48 days, tumors were extracted and cross sections were stained with H&E, the tumor sections in M-3 exhibited the significant area of necrosis (Data not shown). Tumors of control mice showed higher growth rate than the treated group. However, tumors of untreated mice show highest growth rate. During the treatment period, control and treated mice show a slight loss of body weight, but it was not significant when compared to untreated mice (Figure 7d).
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Abstract
Selon un ou plusieurs modes de réalisation de l'invention, la présente invention concerne une nouvelle stratégie pour une administration améliorée de médicament spécifique d'une cible qui utilise l'internalisation accrue de conjugués thérapeutiques par une complexation in situ commandée par une chimie clic bioorthogonale, qui est définie ici en tant que « thérapie clic ». Ce nouveau système à deux étapes/deux composants pour l'administration intracellulaire de produits thérapeutiques repose sur l'internalisation induite de mAb réticulé et regroupé pour cibler des récepteurs d'intérêt, comprenant, par exemple, des récepteurs HER2. Le système permet une administration de médicament spécifique d'une cible, et éventuellement guidée par une image, et une internalisation et une accumulation hautement efficaces de produits chimiothérapeutiques dans les cellules cibles d'intérêt. La présente invention concerne une complexation in situ d'au moins deux composants d'administration par des réactions clic bioorthogonales entre de multiples mAb fonctionnalisés par azido ou fonctionnalisés par tétrazine et de multiples nanosupports fonctionnalisés par cyclootyne ou une fonctionnalisation trans-cyclooctène, et de l'albumine de sérum bovin (BSA) substituée par des produits chimiothérapeutiques, tels que le paclitaxel. La présente invention concerne une chimie clic bioorthogonale sans cuivre, favorisée par la restriction, pour la thérapie.
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CN108473574A (zh) * | 2015-10-20 | 2018-08-31 | 索伦托治疗有限公司 | 细胞内递送化合物 |
US10130723B2 (en) | 2014-03-14 | 2018-11-20 | The Regents Of The University Of California | TCO conjugates and methods for delivery of therapeutic agents |
US10130711B2 (en) | 2013-06-19 | 2018-11-20 | The Regents Of The University Of California | Chemical structures for localized delivery of therapeutic agents |
WO2019084323A1 (fr) * | 2017-10-25 | 2019-05-02 | Georgia State University Research Foundation, Inc. | Système de libération de produits chimiques déclenchée par enrichissement |
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US10130723B2 (en) | 2014-03-14 | 2018-11-20 | The Regents Of The University Of California | TCO conjugates and methods for delivery of therapeutic agents |
US10342882B2 (en) | 2014-03-14 | 2019-07-09 | The Regents Of The University Of California | TCO conjugates and methods for delivery of therapeutic agents |
US10806807B2 (en) | 2014-03-14 | 2020-10-20 | The Regents Of The University Of California | TCO conjugates and methods for delivery of therapeutic agents |
US10828373B2 (en) | 2015-09-10 | 2020-11-10 | Tambo, Inc. | Bioorthogonal compositions |
CN108473574A (zh) * | 2015-10-20 | 2018-08-31 | 索伦托治疗有限公司 | 细胞内递送化合物 |
EP3365375A4 (fr) * | 2015-10-20 | 2019-09-04 | Sorrento Therapeutics, Inc. | Composés d'administration intracellulaire |
US11253600B2 (en) | 2017-04-07 | 2022-02-22 | Tambo, Inc. | Bioorthogonal compositions |
US11560384B2 (en) | 2017-05-04 | 2023-01-24 | University Of Utah Research Foundation | Benzonorbornadiene derivatives and reactions thereof |
WO2019084323A1 (fr) * | 2017-10-25 | 2019-05-02 | Georgia State University Research Foundation, Inc. | Système de libération de produits chimiques déclenchée par enrichissement |
US11607458B2 (en) | 2017-10-25 | 2023-03-21 | Georgia State University Research Foundation, Inc. | Enrichment-triggered chemical delivery system |
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