US20140308354A1 - Sustained release bimatoprost, bimatoprost analogs, prostamides and prostaglandins for fat reduction - Google Patents

Sustained release bimatoprost, bimatoprost analogs, prostamides and prostaglandins for fat reduction Download PDF

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US20140308354A1
US20140308354A1 US14/248,898 US201414248898A US2014308354A1 US 20140308354 A1 US20140308354 A1 US 20140308354A1 US 201414248898 A US201414248898 A US 201414248898A US 2014308354 A1 US2014308354 A1 US 2014308354A1
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bimatoprost
composition
fat
sustained release
reduction
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Scott Whitcup
David Woodward
Patrick Hughes
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Allergan Inc
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Allergan Inc
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Assigned to ALLERGAN, INC. reassignment ALLERGAN, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUGHES, PATRICK, WOODWARD, DAVID, WHITCUP, SCOTT
Publication of US20140308354A1 publication Critical patent/US20140308354A1/en
Priority to US15/134,792 priority patent/US10682361B2/en
Abandoned legal-status Critical Current

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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
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/557—Eicosanoids, e.g. leukotrienes or prostaglandins
    • A61K31/5575—Eicosanoids, e.g. leukotrienes or prostaglandins having a cyclopentane, e.g. prostaglandin E2, prostaglandin F2-alpha
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/38—Heterocyclic compounds having sulfur as a ring hetero atom
    • A61K31/381—Heterocyclic compounds having sulfur as a ring hetero atom having five-membered rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/557—Eicosanoids, e.g. leukotrienes or prostaglandins
    • A61K31/559—Eicosanoids, e.g. leukotrienes or prostaglandins having heterocyclic rings containing hetero atoms other than oxygen
    • 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
    • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
    • 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
    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
    • 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
    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/34—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
    • 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
    • A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/36—Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
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    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
    • 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
    • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
    • A61K9/0024—Solid, semi-solid or solidifying implants, which are implanted or injected in body tissue
    • 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
    • A61K9/0051—Ocular inserts, ocular implants
    • 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
    • A61K9/06—Ointments; Bases therefor; Other semi-solid forms, e.g. creams, sticks, gels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1605—Excipients; Inactive ingredients
    • A61K9/1629—Organic macromolecular compounds
    • A61K9/1641—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers
    • A61K9/1647—Polyesters, e.g. poly(lactide-co-glycolide)
    • 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
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
    • A61K9/1605—Excipients; Inactive ingredients
    • A61K9/1629—Organic macromolecular compounds
    • A61K9/1652—Polysaccharides, e.g. alginate, cellulose derivatives; Cyclodextrin
    • 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
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/19—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles lyophilised, i.e. freeze-dried, solutions or dispersions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A61P3/04—Anorexiants; Antiobesity agents
    • 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
    • A61K9/08—Solutions

Definitions

  • the present invention is directed to compositions and methods for the sustained release of bimatoprost, bimatoprost analogs, bimatoprost prodrugs, prostamides, prostaglandins, prostaglandin analogs and prostaglandin derivatives from injectable and implantable depots for the purpose of fat reduction including localized fat reduction.
  • Topical bimatoprost has been shown to effectively prevent apidocyte formation and maturation and to atrophy adipocytes in animal models after topical administration. Furthermore, clinical evidence of fat reduction after topical administration of bimatoprost has been reported.
  • the present invention is directed to sustained release methods and formulations of bimatoprost, bimatoprost analogs, bimatoprost prodrugs, prostamides, prostaglandins, prostaglandin analogs and derivatives and prostaglandin analogs such as latanoprost and travoprost for localized fat reduction.
  • FIG. 1 shows in vitro release profiles of brimatoprost with injectable PLGA implants
  • FIG. 2 shows in vitro release profiles of brimatoprost with injectable SynBiosys implants
  • FIGS. 3A and 3B show 100 day ReGel 100 or ReGel B release data
  • FIGS. 4A-4C show a comparison of latanoprost release data of ReGel 100 or ReGel B delivery systems
  • FIG. 5 shows a 2-D MR image 40 minutes post-injection oriented longitudinal through the gastrocnemius muscle to show the MGL and MGM muscle groups in each leg.
  • the right leg was injected with HA/Albumin-Gadolinium, the left leg with Albumin-Gadolinium alone;
  • FIG. 6A shows the release rate of bimatoprost in a formulation of 20% Bimatoprost, 45% R203s, 20% RG752s 10% R202H, 5% PEG-3350;
  • FIG. 6B shows the release rate of bimatoprost in a formulation shown at the bottom of FIG. 6B ;
  • FIG. 6C shows the release rate of Compound #1 of the formulations of Table I
  • FIG. 7A shows bimatoprost microspheres which can be used for sustained release of bimatoprost for localized fat reduction
  • FIG. 7B shows the release rate of bimatoprost from the latanoprost microspheres
  • FIGS. 8A and 8B show shows 10% bimatoprost in diethyl glycol dibenzoate (gel).
  • FIG. 8C shows an example of bimatoprost release from a 10% Bimatoprost in Diethyl Glycol Dibenzoate depot (gel).
  • a method of fat reduction comprising injecting a sustained release formulation of a compound selected from the group consisting of bimatoprost, bimatoprost analogs, bimatoprost prodrugs, prostamides, prostaglandins, prostaglandin analogs, latanoprost and travoprost and prostaglandin derivatives and mixtures thereof into a fat deposit.
  • the sustained release formulation is selected from the group consisting of injectable depots, gel suspensions, a ReGel delivery system, a hyaluronic acid release platform, implants, microspheres, macrospheres and injectable solvents.
  • compositions for use in localized fat reduction wherein the composition is a sustained release composition selected from the group consisting of injectable depots, gel suspensions, a ReGel delivery system, a hyaluronic acid based platform, implants, microspheres, macrospheres and injectable solvents.
  • composition of paragraph 12 wherein the composition further comprises a compound selected from the group consisting of bimatoprost, bimatoprost analogs, bimatoprost prodrugs, prostamides, prostaglandins, prostaglandin analogs, latanoprost and travoprost and prostaglandin derivatives.
  • composition of paragraph 12 or 13 wherein the sustained release formulation is an implant comprised of about 20% bimatoprost, about 45% R203s, about 20% RG752s, about 10% R202H and about 5% PEG-3350.
  • composition of paragraph 18 wherein the composition is injected into at least one selected from the group consisting of abdominal fat deposits, visceral fat deposits, epicardial fat deposits, subcutaneous fat deposits and ectopic fat deposits.
  • the sustained release formulation is an implant comprised of at least one polymer selected from the group consisting of poly(d,l-lactide-co-glycolide), poly (d,l-lactide), poly(caprolactone), poly(dioxanone), poly(ethylene glycol), poly(ortho-ester), polyesters, poly(phosphazine), poly (phosphate ester), polycaprolactone, silicone, natural polymers such as latex, gelatin or collagen, or polymeric blends and the compound is selected from the group consisting of bimatoprost, latanoprost, travoprost and mixtures thereof.
  • composition of paragraph 12 or 13 wherein the sustained release formulation is a gel suspension comprised of at least one compound selected from the group consisting of sodium hyaluronate, crosslinked hyaluronic acid, chondroitin sulfate, cellulosics, gelatin, collagen, glycosaminoclycans, or other synthetic or naturally occurring polysaccharides and the compound is selected from the group consisting bimatoprost, latanoprost, travoprost and mixtures thereof.
  • the sustained release formulation is a gel suspension comprised of at least one compound selected from the group consisting of sodium hyaluronate, crosslinked hyaluronic acid, chondroitin sulfate, cellulosics, gelatin, collagen, glycosaminoclycans, or other synthetic or naturally occurring polysaccharides and the compound is selected from the group consisting bimatoprost, latanoprost, travoprost and mixtures thereof.
  • composition of paragraph 22 wherein the thermal gelling system is comprised of solutions of A-B-A or B-A-B triblock copolymers or B-A block copolymers.
  • composition of paragraph 12 or 13 wherein the sustained release formulation is an injectable depot with biocompatible solvents selected from the group consisting of DMSO, NMP and DMAC or mixtures thereof.
  • Bimatoprost and other compounds can be dissolved or dispersed in a gel, in a biodegradable solid implant, or biocompatible solvents containing solvated polymers, which can form solid depots upon injection. Additionally, thermal gelling delivery systems of bimatoprost may also be utilized. Solid implants for sustained release may be comprised of poly(d,l-lactide-co-glycolide), poly (d,l-lactide), poly(caprolactone), poly(dioxanone), poly(ethylene glycol), poly(ortho-ester), polyesters, poly(phosphazine), poly(phosphate ester), polycaprolactone, silicone, natural polymers such as latex, gelatin or collagen, or polymeric blends.
  • Gel suspensions could contain sodium hyaluronate, crosslinked hyaluronic acid, chondroitin sulfate, cellulosics, gelatin, collagen, glycosaminoclycans, or other synthetic or naturally occurring polysaccharides.
  • Biocompatible solvents for injection of in situ forming depots include DMSO (dimethyl sulfoxide), NMP (N-methylpyrrolidone), DMAC (dimethylacetamide), or other non-aqueous solvents for injection.
  • Bimatoprost delivery systems and delivery systems for other compounds can be administered for reduction of adipose tissue through the injection or implantation of implants or injectable depots.
  • Such delivery systems may be used for reduction of local adipose tissue, e.g subcutaneous fat, and/or as a method for sustained systemic delivery to achieve reduction of visceral fat and other fat pad depositions that are not easily reached by local administration of the implant or injection such as pericardial fat depositions.
  • Bimatoprost is a low melting compound and the ability to sustain its release from multiple delivery platforms is surprising.
  • Specific delivery platforms include but are not limited to injectable bimatoprost delivery depots, in situ forming bimatoprost depots, hyaluronic acid depots, solid form bimatoprost implants, bimatoprost microspheres and injectable solvent depots.
  • the delivery systems of the present invention can be injected or implanted at a location to achieve reduction of subcutaneous fat deposits and adipose tissue such as abdominal fat, visceral fat, epicardial fat, submental fat, periorbital fat and ectopic fat pads.
  • PLGA and multiblock polymers have been shown to release bimatoprost upon depot formation.
  • the polymers and drug are dissolved in a biocompatible solvent for both, such as N-methypyrrolidinone, di-methyl acetamide or DMSO.
  • the formulation is sterile filtered, autoclaved, or irradiated for sterility.
  • the solution is filled into a sterile vial or a unit dose syringe.
  • the biocompatible solvent diffuses away from the depot, leaving behind a firm prostamide or prostaglandin loaded implant.
  • the depot releases bimatoprost, prostamide or prostaglandin for days, weeks, or months, as the polymer bioerodes.
  • Drug loading in solution could range from 0.1% to 50%.
  • Polymer loading in solution could range from 15% to 50%.
  • Excipients could include poly(ethylene glycol), short chain fatty acids, waxes, cholesterol, aliphatic alcohols, co-solvents, or other compounds which would adjust the hydrophobicity of the depot.
  • Polymer systems that undergo phase transitions in response to various stimuli can also be used. This phase transition results in a significant volume and or viscosity change in the system.
  • the system can respond to pH, ionic environment, temperature, biologic triggers as well as other chemical and physical triggers.
  • the system comprises one or more polymers capable of interacting to cause a phase-transition resulting in the volume or viscosity increases. Examples of polymers include polyacrylic acid and polyethylene oxide copolymers. Other components of the system include excipients known to those experienced in the art.
  • the system has the further advantage of offering controlled and sustained release of therapeutically active agents to local tissues.
  • the drug may be physically entrapped or chemically bound via covalent linkages, hydrogen binding, ionic interactions, van der Waals forces or hydrophobic interactions. Release of the drug can be controlled by physical entrapment of the active compound in the transitioned gel.
  • Compounds can also be physically or chemically bound to the polymers comprising the phase transition gel. The phase transition of the gel serves to create a depot for drug delivery.
  • PLGA/PLA polylactide-co-glycolide
  • PEO polyethylene oxide
  • latanoprost latanoprost.
  • latanoprost was loaded at 3% loading into ReGel 100 or ReGel B i.e. 3 mg drug in 100 ul gel.
  • the system displayed sustained release after thermal gelation with no burst of latanoprost. This is very surprising given the relative low melting point and solubility of latanoprost. i.e., slow release, no burst.
  • the gel remained for longer than 100 days as shown in FIGS. 3A and 3B . Additional modifications can be made by adding other polymers to the system, e.g., CMC, agarose and starch.
  • Crosslinked hyaluronic acid has been shown to localize upon injection providing a potential sustained release platform.
  • Drug can either be incorporated into the crosslinked hyaluronic acid or conjugated to the vehicle for sustained release. In the case of the former, release and erosion of the platform can be controlled by porosity of the gel, length of the crosslinkers and crosslinking density. Alternatively, in the latter case, bimatoprost or a prostamide analog can be covalently or ionically bonded to the hyaluronic backbone through one of several linkers known to the art. Finally, drug may be incorporated into another sustained release modality, such as microspheres, then incorporated into the hyaluronic acid (crosslinked or non-crosslinked) and injected as a delivery platform.
  • sustained release modality such as microspheres
  • FIG. 5 shows a 2-D MR image 40 minutes post-injection oriented longitudinal through the gastrocnemius muscle to show the MGL (tripennate gastrocnemius lateralis) and MGM (unipennate gastrocnemius medialis) muscle groups in each leg.
  • the right leg was injected with HA/Albumin-Gadolinium, the left leg with Albumin-Gadolinium alone.
  • the left leg shows diffuse spread of the Albumin-Gadolinium (blue color) throughout the MGL muscle and crossover to the adjacent MGM muscle.
  • This data shows that cross-linked HA depots can be localized and provide a platform for the local sustained release of a prostaglandin or prostamide for fat reduction.
  • Bimatoprost has been formulated into implants that can be injected or implanted subcutaneously, into visceral fat or in direct apposition to an organ.
  • An example is the following formulation : 20% Bimatoprost, 45% R203s, 20% RG752s 10% R202H, 5% PEG-3350 and FIG. 6A shows the release rate of bimatoprost from this formulation (R203S is an ester end-capped PLA, R202H is an acid end group PLA, RG752S is a 75:25 PLGA with an ester end group and PEG — 3350 is polyethylene glycol with a molecular weight of 3350).
  • Other implant formulations and their release rates are shown in FIG. 6B .
  • Compound #1 Another compound which may be useful for fat reduction is disclosed below:
  • Implant formulations with Compound #1 and their properties are in Table I below:
  • Bimatoprost and latanoprost can also be sustained through the use of PLGA microspheres and macrospheres as shown in FIGS. 7A-7B for latanoprost.
  • Latanoprost microspheres were manufactured from the PLA and PLGA polymers as shown in the table below. The microspheres were manufactured by dissolving 20 mg of latanoprost and 100 mg polymer in 0.8 ml ethyl acetate. A minimum amount of dichloromethane may be added to complete dissolution of the polymer. This solution is added to 40 mL 1% polyvinyl alcohol aqueous solution via a micro-pipette while mixing at high sheer, 3000 rpm, for 5 minutes with a homogenizer.
  • FIGS. 8A-8B shows 10% bimatoprost in Diethyl Glycol Dibenzoate (gel) and FIG. 8C shows an example of bimatoprost release from 10% Bimatoprost in Diethyl Glycol Dibenzoate (gel).

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US14/248,898 2013-04-12 2014-04-09 Sustained release bimatoprost, bimatoprost analogs, prostamides and prostaglandins for fat reduction Abandoned US20140308354A1 (en)

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US9795615B2 (en) * 2015-04-30 2017-10-24 Allergan, Inc. Methods for fat reduction
WO2022020347A1 (en) * 2020-07-21 2022-01-27 Allergan, Inc. Intraocular implant with high loading of a prostamide

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