Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K38/00—Medicinal preparations containing peptides
  • A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
  • A61K38/17—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
  • A61K38/39—Connective tissue peptides, e.g. collagen, elastin, laminin, fibronectin, vitronectin, cold insoluble globulin [CIG]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
  • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
• • A—HUMAN NECESSITIES
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  • 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
• • A—HUMAN NECESSITIES
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  • 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
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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  • 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
  • A61K47/6937—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 the polymer being PLGA, PLA or polyglycolic acid
• • 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
  • A61K9/0012—Galenical forms characterised by the site of application
  • A61K9/0048—Eye, e.g. artificial tears
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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  • 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
• • A—HUMAN NECESSITIES
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  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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• • A—HUMAN NECESSITIES
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  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07K—PEPTIDES
  • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
  • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
  • C07K14/475—Growth factors; Growth regulators
  • C07K14/48—Nerve growth factor [NGF]
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07K—PEPTIDES
  • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
  • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
  • C07K14/78—Connective tissue peptides, e.g. collagen, elastin, laminin, fibronectin, vitronectin or cold insoluble globulin [CIG]
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07K—PEPTIDES
  • C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
  • C07K7/04—Linear peptides containing only normal peptide links
  • C07K7/08—Linear peptides containing only normal peptide links having 12 to 20 amino acids
• • G—PHYSICS
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  • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
  • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
  • G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
  • G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
  • G01N33/56966—Animal cells
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
  • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
  • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
  • G01N33/58—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances
  • G01N33/585—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances with a particulate label, e.g. coloured latex
  • G01N33/587—Nanoparticles
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
  • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
  • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
  • G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
  • G01N33/6887—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids from muscle, cartilage or connective tissue
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
  • G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
  • G01N2333/705—Assays involving receptors, cell surface antigens or cell surface determinants
  • G01N2333/70546—Integrin superfamily, e.g. VLAs, leuCAM, GPIIb/GPIIIa, LPAM
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
  • G01N2333/435—Assays involving biological materials from specific organisms or of a specific nature from animals; from humans
  • G01N2333/78—Connective tissue peptides, e.g. collagen, elastin, laminin, fibronectin, vitronectin, cold insoluble globulin [CIG]
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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  • G01N2800/70—Mechanisms involved in disease identification
  • G01N2800/7014—(Neo)vascularisation - Angiogenesis
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
  • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Definitions

• the present invention in various aspects and embodiments involves pharmaceutical compositions of peptides derived from the a5 fibril of type IV collagen, and uses thereof for medical treatment.
• exemplary peptides comprise the amino acid sequence LRRFSTAPFAFIDINDVINF (SEQ ID NO:2), LRRFSTAPFAFININNVINF (SEQ ID NO:3), LRRFSTAPFAFIDrNDVINW (SEQ ID NO:4), FTNINNVTN (SEQ ID NO:5), or FTDINDVTN (SEQ ID NO:6), or an amino acid sequence that is a derivative of any of the foregoing, including various derivatives described herein.
• Figure 10 shows the binding of particles to integrin ⁇ 3 with competition from various peptides.
• Figure 13 shows the inhibitory effects of N07 on proliferation of MEC cells. % refers to amount of PLGA-PEG molecules that have conjugated P07. "+” or “-” refers to the presence or absence of encapsulated P07.
• Figure 14 shows adhesion assay results measuring the adhesion of cells to plates pre-treated with P07.
• Figure 15 shows microparticles (MPs) made with 85/15 PLGA and P07, also called M07, using double emulsion technique. Lyophilized samples were imaged with SEM. (A) 0% loading; (B) 0.6% final peptide loading by weight; (C) 1% final loading. Scale shown is 10 ⁇ .
• Figure 16 shows M07, stretched 2.25x. Lyophilized samples were imaged with
• Figure 18 shows Gel quantification of P07 loading in stretched MPs. Quantified using silver staining and peptide standard. Final P07 w/w ratio -1%, which is comparable to the pre-stretching P07 w/w ratio of -1%.
• amino acids from one to ten amino acids such as one, two or three amino acids of SEQ ID NO: l are deleted.
• amino acids from N-terminus are deleted in some embodiments.
• the peptide comprises the amino acid sequence
• the sequence DF DV or NF NV is maintained in the derivative.
• Amino acid substitutions can optionally be at positions occupied by an X at the corresponding position of SEQ ID NO: 1.
• the peptide generally has at least 8 amino acids.
• Derivatives of peptides of SEQ ID NO: 5 or 6 include peptides comprising a sequence having 1, 2, or 3 amino acid substitutions with respect to the sequence of SEQ ID NO: 5 or 6.
• amino acid substitutions are independently selected from conservative or non-conservative substitutions.
• the peptide includes from 1 to 10 amino acids added to one or both termini (collectively).
• the peptide described herein can help treat these conditions by inhibiting signaling through multiple receptors involved in microvascular permeability, including vascular endothelial growth factor receptor (VEGFR), hepatocyte growth factor receptor (HGFR), insulin-like growth factor receptor (IGFR), and platelet derived growth factor receptor (PDGFR).
• VEGFR vascular endothelial growth factor receptor
• HGFR hepatocyte growth factor receptor
• IGFR insulin-like growth factor receptor
• PDGFR platelet derived growth factor receptor
• the patient has or is at risk of flu.
• Influenza (“the flu") is an infectious disease caused by the influenza virus. Symptoms include a high fever, runny nose, sore throat, muscle pains, headache, coughing, and fatigue. These symptoms typically begin two days after exposure to the virus. The infection may be confirmed by testing the throat, sputum, or nose for the presence of the virus. Yearly vaccinations against influenza are recommended by the World Health Organization for those at high risk, and the vaccine is typically effective against three or four types of influenza.
• Antiviral drugs such as the neuraminidase inhibitors (e.g., oseltamivir, among others) have been used to treat influenza, and while they have shown modest benefits, they must be used early in the infection (e.g., soon after symptoms appear) to provide benefit. Approximately 33% of people with influenza are asymptomatic. Symptoms of influenza can start quite suddenly around one to two days after infection. Usually the first symptoms are chills or a chilly sensation, but fever is also common early in the infection. Anti-viral treatments, although sometimes providing modest benefits, run the risk of viral resistance, which would be particularly problematic in a potent pandemic strain.
• the neuraminidase inhibitors e.g., oseltamivir, among others
• the peptide or pharmaceutical composition described herein can be administered from about 1 to about 5 times daily, such as from about 1 to about 3 times daily to slow the onset or progression of the disease.
• Early stage disease can often be observed as an increasing impairment of learning and memory, which eventually leads to a definitive diagnosis.
• difficulties with language, executive functions, perception (agnosia), or execution of movements (apraxia) are more prominent than memory problems.
• Language problems are characterized by a shrinking vocabulary and decreased word fluency, leading to a general impoverishment of oral and written language.
• the peptide or pharmaceutical composition is administered to a patient having early stage Alzheimer's Disease or a patient at risk for developing Alzheimer's Disease (either genetically predisposed, or is positive for one or more biomarkers associated with AD), where the peptide therapy normalizes circulation in the brain to slow or prevent disease progression.
• the specificity of the peptide suggests other medically important roles for the peptide in cancer therapy.
• the receptors have been identified as the ⁇ 5 ⁇ 1 and ⁇ 3 integrins. Integrins function as co-receptors for many different growth factor receptors.
• the peptides described herein and derivatives thereof inhibit signaling from the vascular endothelial growth factor receptor (VEGFR2), the hepatocyte growth factor receptor (c- met), and insulin-like growth factor receptor among others.
• P07 for example, strongly inhibits VEGF induced neovascularization and leakage in mouse models of retinal and choroidal neovascularization and vascular leakage.
• VEGF also causes immunosuppression which is exploited by the tumor to dampen the immune response against it. Since P07 blocks signaling by VEGF, it could effectively act as an immune system booster and thus promote attack on the tumor by the immune system.
• the peptide can be delivered as a pharmaceutically acceptable salt, and may include any number of carriers known in the art.
• pharmaceutically acceptable salt includes salts that are prepared with relatively nontoxic acids or bases.
• pharmaceutically acceptable carrier is intended to include, but is not limited to, water, saline, dextrose solutions, human serum albumin, liposomes, hydrogels, microparticles and nanoparticles.
• the agents of the disclosure also may be formulated by methods known to those of skill in the art, and may include, for example, but not limited to, examples of solubilizing, diluting, or dispersing substances such as, saline, preservatives, such as benzyl alcohol, absorption promoters, and fluorocarbons.
• the peptide is formulated with a polymeric nanoparticle or microparticle carrier.
• the microparticle or nanoparticle comprises a material having one or more degradable linkages, such as an ester linkage, a disulfide linkage, an amide linkage, an anhydride linkage, and a linkage susceptible to enzymatic degradation.
• the microparticle or nanoparticle comprises a biodegradable polymer or blends of polymers selected from the group consisting of poly(lactic-co-glycolic acid) (PLGA), poly(beta-amino ester) (PBAE), polycaprolactone (PCL), polyglycolic acid (PGA), polylactic acid (PLA), poly(acrylic acid) (PAA), poly-3-hydroxybutyrate (P3HB) and poly(hydroxybutyrate-co- hydroxy valerate).
• nondegradable polymers that are used in the art, such as polystyrene are blended with a degradable polymer or polymers from above to create a copolymer system. Accordingly, in some embodiments, a nondegradable polymer is blended with the biodegradable polymer.
• the term “nanoparticle,” refers to a particle having at least one dimension in the range of about 1 nm to about 1000 nm, including any integer value between 1 nm and 1000 nm (including about 1, 2, 5, 10, 20, 50, 60, 70, 80, 90, 100, 200, 500, and 1000 nm and all integers and fractional integers in between).
• the nanoparticle has at least one dimension, e.g., a diameter, of about 50 to about 100 nm.
• the nanoparticle has a diameter of about 70 to 100 nm.
• the particle is a microparticle.
• microparticle includes particles having at least one dimension in the range of at least about one micrometer ( ⁇ ).
• the term “particle” as used herein is meant to include nanoparticles and microparticles.
• the nanoparticles have a core (PLGA) that can be tuned for a specific biodegradation rate in vivo (by adjusting the LA:GA ratio and/or molecular weight of the PLGA polymer).
• the PLGA is based on a LA:GA ratio of from 20: 1 to 1 :20, including compositions of L/G of: 5/95, 10/90, 15/85, 20/80, 25/75, 30/70, 35/65, 40/60, 45/55, 50/50, 55/45, 60/40, 65/35, 70/30, 75/25, 80/20, 85/15, 90/10, or 95/5.
• PLGA degrades by hydrolysis of its ester linkages.
• the ratio of PLGA-PEG-peptide and unconjugated PLGA-PEG ranges from about 1 :20 to about 20: 1, such as from about 1 : 15 to about 15: 1, or about 1 : 10 to about 10: 1, or about 1 :5 to about 5: 1, or about 1 :2 to about 2: 1. In some embodiments, the ratio of PLGA-PEG-peptide and unconjugated copolymers is about 1 : 1. In some embodiments, at least 50% of the polymers have conjugated peptide. In some embodiments, the nanoparticle has a size (average diameter) within the range of about 50 to about 200 nm, or within the range of about 50 to about 100 nm.
• the active agent is a chemotherapeutic agent, such as one or more of: aminoglutethimide, amsacrine, anastrozole, asparaginase, bicalutamide, bleomycin, buserelin, busulfan, camptothecin, capecitabine, carboplatin, carmustine, chlorambucil, cisplatin, cladribine, clodronate, colchicine, cyclophosphamide, cyproterone, cytarabine, dacarbazine, dactinomycin, daunorubicin, dienestrol, di ethyl sti lb estrol, docetaxel, doxorubicin, epirubicin, estramustine, etoposide, exemestane, filgrastim, fludarabine, fludrocortisone, fluorouracil, fluoxymesterone, flutamide, gemcitabine,
• Nanoparticle formation PLGA was first dissolved into DCM, at desired concentration (usually 20 mg/mL or 40 mg/mL), in a test tube and vortexed to fully dissolve. Peptide stock, such as P07, in DMSO (20 mg/mL) was micropipetted to the PLGA/DCM solution. The mass ratio of peptide to PLGA can vary. An exemplary formulation is 1 :50 peptide:PLGA. For blank nanoparticle, an equivalent volume of DMSO only was pipetted. The mixture was sonicated with the test tube on ice. Sonication (Misonix) was performed with an amplitude setting of '30', which equals approximately 5- 10 W, for 20 seconds.
• TEM transmission electron microscopy
• Microparticle loading and release quantification To measure loading, a known mass of microparticles was dissolved in DMSO. For peptide loaded microparticles, and corresponding blank microparticles, quantification was performed by running gel electrophoresis (Bio-Rad Mini-PROTEAN system) and silver stain analysis. A 12-well 10-20% Mini-PROTEAN tris-tricine gel was used, along with lOx tris/tricine/SDS running buffer diluted to lx in Milli-Q water. Each gel contained a standard series of a known amount of peptide. The peptide standard series included 0, 62.5, 125, 250, and 500 ng of peptide per well.

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• 2016
  • 2016-11-18 CN CN201680078709.0A patent/CN108883150A/zh active Pending
  • 2016-11-18 KR KR1020187017365A patent/KR20180081608A/ko not_active Withdrawn
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