Classifications

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  • A61K39/12—Viral antigens
  • A61K39/155—Paramyxoviridae, e.g. parainfluenza virus
  • A61K39/17—Newcastle disease virus
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  • A61K39/215—Coronaviridae, e.g. avian infectious bronchitis virus
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  • A61K39/245—Herpetoviridae, e.g. herpes simplex virus
  • A61K39/255—Marek's disease virus
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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
  • A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
  • A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
• • A—HUMAN NECESSITIES
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  • A61K9/0002—Galenical forms characterised by the drug release technique; Application systems commanded by energy
  • A61K9/0007—Effervescent
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  • 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
  • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
  • A61K9/0056—Mouth soluble or dispersible forms; Suckable, eatable, chewable coherent forms; Forms rapidly disintegrating in the mouth; Lozenges; Lollipops; Bite capsules; Baked products; Baits or other oral forms for animals
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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  • A61K9/2013—Organic compounds, e.g. phospholipids, fats
  • A61K9/2018—Sugars, or sugar alcohols, e.g. lactose, mannitol; Derivatives thereof, e.g. polysorbates
• • A—HUMAN NECESSITIES
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  • A61K9/2022—Organic macromolecular compounds
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• • A—HUMAN NECESSITIES
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  • A61P31/12—Antivirals
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• • A—HUMAN NECESSITIES
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  • A61P31/12—Antivirals
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• • A—HUMAN NECESSITIES
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  • A61P31/12—Antivirals
  • A61P31/20—Antivirals for DNA viruses
  • A61P31/22—Antivirals for DNA viruses for herpes viruses
• • A—HUMAN NECESSITIES
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  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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  • A61P37/02—Immunomodulators
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• • A—HUMAN NECESSITIES
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  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K39/00—Medicinal preparations containing antigens or antibodies
  • A61K2039/51—Medicinal preparations containing antigens or antibodies comprising whole cells, viruses or DNA/RNA
  • A61K2039/525—Virus
  • A61K2039/5252—Virus inactivated (killed)
• • A—HUMAN NECESSITIES
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  • A61K2039/55—Medicinal preparations containing antigens or antibodies characterised by the host/recipient, e.g. newborn with maternal antibodies
  • A61K2039/552—Veterinary vaccine
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
  • C12N2760/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses negative-sense
  • C12N2760/00011—Details
  • C12N2760/18011—Paramyxoviridae
  • C12N2760/18111—Avulavirus, e.g. Newcastle disease virus
  • C12N2760/18134—Use of virus or viral component as vaccine, e.g. live-attenuated or inactivated virus, VLP, viral protein
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
  • C12N2770/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses positive-sense
  • C12N2770/00011—Details
  • C12N2770/20011—Coronaviridae
  • C12N2770/20034—Use of virus or viral component as vaccine, e.g. live-attenuated or inactivated virus, VLP, viral protein

Definitions

• the present invention relates to a stable compacted, compressed vaccine composition
• a stable compacted, compressed vaccine composition comprising a compressed vaccine composition comprising at least one lyophilized antigenic component and a foam controlling agent, and a process of making thereof.
• This stable dense vaccine composition retains titer stability and while further providing complete dissolution in a diluent with minimum foaming.
• a method for vaccinating a subject using the stable vaccine composition is also provided.
• Pat. No. 5, 336, 666 discloses a freeze dried liquid vaccine that may form a tablet to be reconstituted in liquid form.
• a disadvantage to current vaccine preparations is that they contain stabilizers susceptible to foaming when mixed in diluent, causing excessive foaming of the solution after dissolution of the composition which also causes problems for the user in containing the solution in the container its dissolved in. Overflow of the solution from the container due to foaming can result in loss of product and increased exposure of the vaccine to the user.
• a further object of the invention is to provide a lyophilized live or inactivated vaccine which is compacted, compressed or tableted as a dense stable solid that will retain its potential immunizing capacity during preparation and for the duration required for a pharmaceutically acceptable period of time and can be dissolved in diluent with minimum foaming.
• Another object of the invention is to provide a vaccine composition and method of immunizing with greater flexibility in the vaccinations that can be formulated and uses thereof.
• a further object of the invention is to provide a vaccine composition and method of immunizing which reduces the need for excess vaccine material needed to compensate for the inherent inaccuracies in the titer caused by over-foaming and loss of product during dissolution.
• Another object of the invention is to provide a vaccine composition and method of immunizing which facilitates avian mass immunization.
• the present invention which relates to a stable vaccine composition comprising at least one pre-titrated lyophilized antigenic component, and foam- controlling agent, wherein the vaccine composition is in the form of a compressed composition.
• the present invention also provides a method of immunizing a subject against a disease comprising the steps of: dissolving the compressed vaccine composition containing the foam controlling agent in a pharmaceutically acceptable diluent to form a solution; and administering the resulting solution to the subject in an amount effective to immunize the subject against the disease.
• the invention does not intend to encompass within the scope of the invention any previously disclosed product, process of making the product or method of using the product, which meets the written description and enablement requirements of the USPTO (35 U.S.C. 112, first paragraph) or the EPO (Article 83 of the EPC), such that applicant(s) reserve the right and hereby disclose a disclaimer of any previously described product, method of making the product or process of using the product.
• the invention provides a stable compressed vaccine composition comprising at least one lyophilized antigenic component, and a foam controlling agent.
• the vaccine composition dissolves completely and rapidly in a diluent.
• the vaccine composition is in the form of a hard tablet, a caplet, a granulation, a sprinkle, a pellet, a bead, a pill, or a lyophilized cake.
• the vaccine composition comprisises a dissolution agent which is an effervescent agent or pair of agents.
• the vaccine composition comprises a dissolution agent comprises a pair of effervescent agents.
• the vaccine composition comprises as effervescent pair comprising a salt and an acid e.g. citric acid and the salt is a bicarbonate.
• the vaccine composition comprises a foam controlling agent comprising about 25% to 40% by weight of the composition.
• the vaccine composition comprises a dissolution agent comprising up to about 60% by weight of the composition.
• the vaccine composition comprises a dissolution agent comprising up to about 35% by weight of the composition.
• the vaccine composition comprises a lyophilized antigenic component comprising up to 90%> by weight of the composition.
• the vaccine composition comprises a lyophilized antigenic component comprising up to 80%> by weight of the composition.
• the vaccine composition is characterized by complete dissolution between about 90 and 700 seconds upon contact with a diluent.
• the stability of the composition is characterized by a loss of titer no greater than the difference shown in the examples.
• the vaccine composition comprises a foam controlling agent that is a sugar alcohol.
• the vaccine composition comprises a foam controlling agent that is xylitol, mannitol and sorbitol.
• the vaccine composition comprises a foam controlling agent that is mannitol.
• the vaccine composition comprises an antigenic component that is IB88 or IBH120.
• the vaccine composition has a friability of less than about
• the vaccine composition comprises a live virus selected from the group consisting of: Newcastle Disease virus, Infectious Bursal Disease virus, fowl pox virus, Laryngotracheitis virus, Infectious Bronchitis of poultry virus, sheep pox virus, Rinderpest virus, or an admixture of one or more of the foregoing, whether naturally occurring, recombinant or modified.
• the vaccine composition comprises an antigenic component selected from the group consisting of: anthrax bacilli, Salmonella SPP, E. coli, or an admixture of one or more of the forgoing, whether naturally occurring or recombinant or modified.
• the vaccine composition comprises an antigenic component that is a live virus and the composition further comprises neutralizing antibodies against the virus.
• method of vaccinating a subject against a disease comprising the steps of: dissolving the vaccine composition of the invention which provides protection against such disease with a diluent to form a solution; and administering the resulting solution to the subject in an amount effective to immunize the subject against the disease.
• method of vaccinating a subject dissolution occurs between about 90 and 700 seconds upon contact with a diluent wherein the administering step comprises spraying the subject with an aerosol formed from the solution.
• process of making a stable compressed rapidly dissolving vaccine composition of the invention comprising the steps of: lyophilizing at least one antigenic component; mixing the lyophilized antigenic component and foam controlling agent; and compressing the mixture of the lyophilized antigenic component and foam controlling agent with at least one dissolution agent to form a stable compressed rapidly dissolving vaccine composition.
• a process for reducing the foaming of a solid vaccine composition when mixed with liquid diluent comprising:
• At least one anhydrous antigenic component comprising a stabilizer susceptible to foaming
• composition further comprises a dissolution agent.
• dissolution agent is an effervescent agent or pair of effervescen agents.
• a process according to paragraph 14, wherein the acid is citric acid, tartaric acid, malic acid, fumaric acid, adipic acid, succinic acid, acid anhydrides or mixtures thereof.
• salt is carbonate salts, bicarbonate salts, sesquicarbonate salts, or mixtures thereof.
• a stable vaccine composition comprising:
• At least one anhydrous antigenic component comprising a stabilizer susceptible to foaming when the composition is mixed with liquid diluent
• antigenic component is newcastle disease virus, infectious bronchitis virus,fowl pox virus, avian encephalomyelitis virus, marek's disease virus, trichophyton verrucosum, avian paramyxovirus, mycobacterium paratuberculosis,_meleagrid herpesvirus, orf virus, or sheep pox virus.
• a dissolution agent is an effervescent agent or pair of effervescent agents.
• a stable vaccine composition according to any one of paragraphs 35 to 41, wherein the dissolution agent is up to about 60%o by weight of the composition.
• a stable vaccine composition according to any one of paragraphs 28 to 45, wherein the composition is characterized by complete dissolution of the composition in the diluent between about 60 and 700 seconds upon contact with the diluent.
• a stable vaccine composition according to any one of paragraphs 28 to 46, wherein the composition is characterized by reduction in foaming of the composition when in contact with the diluent relative to the foaming of the composition in the absence of the sugar alcohol.
• composition has a friability of less than about 2%.
• the composition is stable at 5°C in anhydrous conditions for at least 9 months.
• a method of vaccinating a subject against a disease comprising the steps of:
• the compacted, compressed and hard tablets of the vaccine composition can be made on an instrumented MANESTY F3 Single Punch 12mm Flat Beveled or 6mm standard concave punches.
• the vaccine composition in the form of a hard tablet can be made at a pressures of a maximum of 4 tonnes.
• the tablets can be tested for hardness on a ERWEKA Tablet Hardness Tester Model TBH20 as described above, and were all found to have a hardness greater than 3.0 seD.
• the classic tablet normally associated with therapeutic agents is understood to be such a "tablet".
• any compacted or compressed dense form is intended, including those having less frequent use in the pharmaceutical field. For example, large "briquettes" would be suitable should the final application require a large volume of material.
• tablet fillers are substances that compromise the bulk of the tablet and primarily act as a carrier.
• Typical tablet filler s include, but are not limited to,calcium sulfate, calcium phosphate, calcium carbonate,starch, modified starches (carboxymethyl starch, etc.), microcrystalline cellulose, lactose, sucrose, dextrose mannitol and sorbiol. Tablet filler levels are from about 0%> to 90% by weight of the tablet.
• Binders act as the "glue” which holds powders together toform granules. Binders include, but are not limi ted to, natural polymers such as starches or gums acacia, tragacanth and gelatin or synthetic polymers such as PVP and methyl-, ethyl- and hydroxypropylcellulose. Binder levels are from about 0% to 20% by weight of thecomposition.
• Dissolution aids promote dissolution of the vaccine composition.
• Typical examples include, but are not limited to effervescent agents, disintegrates, surfactants and solubilizers.
• Disintegrants cause compressed tablets to break apart.
• Typical examples include, but are not limited to, starch, microcrystalline cellulose, purified wool starch, alginic acid, sodium starch glycolate guar gum, crosslinked polyvinyl pyrolidone (PVP), ion exchange resin and celluloses such as methyl-, croscarmellose sodium, sodium carboxymethyl- and hydroxypropylmethyl-.
• Dissolution agentlevels are from about 1% to 95% by weight of the composition.
• Lubricants reduce friction between the material to be compressed and die wall during compression and ejection.
• Most lubricants are water insoluble and include stearates(magnesium, calcium and sodium), stearic acid, talc and waxes.
• Water soluble lubricants include PEG's, sodium benzoate, sodium oleate, sodium acetate, sodium lauryl sulfate and magnesium lauryl sulfate. Lubricant levels are from about 0% to 5% by weight of the composition.
• Colorants are added to help identify types of vaccine formulations such as in the form of tablets for aesthetic an functional purposes, for example and not as limitation to the present invention, the dyes disclosed in Examples A through D taken from Israeli Patent No. 46189. Colorant levels are from about ⁇ 1% of the formulation.
• the composition of the present invention is a hard tablet prepared having an effervescent agent as a dissolution aid.
• the effervescent -ablet must contain a basic component and an acidic component, such as an effervescent pair, so that upon dissolution appropriate reactions occur to generate carbon dioxide and carbonic acid.
• Suitable effervescent components include the carbonate family of basic compounds and inorganic or organic acidic compounds.
• preferred effervescent agents for use in the compositions of the present invention are sodium carbonate, sodium bicarbonate, glycine carbonate, potassium carbonate, potassium bicarbonate, potassium dihydrogencitrate, and calciu carbonate.
• a most preferred basic compound is sodium bicarbonate.
• Preferred acidic components for use in the compositions of the present invention are citric acid, adipic acid, tartaric acid, maleic acid, boric acid, benzoic acid, hydroxybenzoic acid, methoxybenzoic acid, mandelic acid, malonic acid,lactic acid, pyruvic acid, glutaric acid, aspartic acid,hydrochloric acid, oxalic acid, salicylic acid, succinic acid, and acetic acid.
• a most preferred acidic effervescent component is citric acid.
• the tablet composition of the present invention may also contain other excipients conventionally employed.
• antigenic component or "antigen” as used herein is a substance that is recognized by the immune system and induces an immune response.
• the substance may comprise a whole organism, killed, attenuated or live; a subunit or portion of an organism; a recombinant vector containing an insert with antigenic properties; a nucleic acid piece or fragment capable of inducing an immune response upon presentation to a host animal; a protein, a polypeptide, a peptide, a glycoprotein, an epitope, a hapten, a carbohydrate, a sugar, or any combination thereof.
• the antigen may comprise a toxin or antitoxin.
• a similar term used interchangeably in this context is "immunogen" or "antigenic”.
• the term "compacted" as used herein refers to a vaccinecomposition having a density greater than 1.0 g/cc, but no measurable hardness as measured in Strong-Cobb Units (SCU) and tested for hardness on a ERWEKA Tablet Hardness Tester Model TBH20.
• compressed refers to a vaccine composition having a hardness of at least 2.0 SCU.
• hard tablet refers to a vaccine composition in the form of a tablet or other dense form having a hardness of at least 3. 0 SCU.
• rapidly disintergrated or “rapidly dissolved” as used herein is understood to mean that disintegration or dissolution is complete within approximately a few minutes or less when a large volume of water is employed for small volume of compressed lyophilized vaccine composition e. g. 100 ml of water for a 400 mg effervescent tablet. The time is increased where the volumes of diluent are comparably decreased. Thus the same tablet might require 70 seconds with a volume of water of 10 ml, and 80 seconds in 2 ml of water.
• disintegration time or “dissolution time” as used herein is the time taken for dissolution or disintegration of a tablet when mixed in a measured quantity of water at room temperature.
• stable as used herein is understood to mean that the compositions of the present invention will maintain their (potential) immunizing capacity during preparation and for the duration required for shelf life of a commercial vaccine.
• excipient refers to a term for diluents or vehicles used in the formulation of the vaccine composition. Excipients can include: diluents or fillers, binders or adhesives, dissolution aids, lubricants, antiadherents, glidants or flow promoters, colors, flavors, sweeteners and adsorbents.
• stabilizer is chemical compounds used to stabilize antigenic material during lower temperature storage or lyophilisation.
• stablizers include amino acids, such as alanine, arginine, aspartic acid, cystine,, glutamic acid, glycine, histidine, hydroxy proline, isoleucine, leucine, lysine, methionine, phenyl alanine, proline, serine, threonine, tyrosine, and valine; amino acids salts thereof such as L-arginine hydrochoride salt and glutamic acid alkali metal salt such as monosodium glutamate and monopotassium glutamate; proteins, or salts thereof, such as protein hydrolysate, bovine protein, mouse serum protein, calf serum protein, yeast protein, chicken protein, egg protein; albumin such as bovine albumin and ovalbumin, gelatin, and hydrolysed gelatin
• the stabilizer also includes a monosaccharide, e.g.,
• mixed means mixing a substance by sonication, mechanical or chemical means.
• mechanical mixing include stirring, shaking, magnetic stirring, and forcing the substance through a suitable syringe.
• chemical mixing include an effervescent reaction causing in-situ gas formation (via chemical reaction of one or more ingredients, including formation of carbon dioxide (CO 2 gas) sufficient to cause a mixing action as the resultant release of gas bubbles pass through the liquid to the surface.
• CO 2 gas carbon dioxide
• the antigenic component as defined herein can comprise live attenuated pathogens, such a live attenuated viruses, bacteria, fungi, or parasites.
• an active antigenic component can also comprise killed viruses, recombinant heterologous immunogens, antigens, antigenic subunits (e.g. proteins, polypeptides, peptides, epitopes, haptens) or epitopes of immunogens or antigens derived from or originating from one or more pathogens described herein, which can be expressed from viral vectors, bacterial vectors, plasmid vectors, and the like.
• the active antigenic component of the present invention can comprise one or more immunogens selected from a canine pathogen including, but not limited to, rabies virus, canine adenovirus type 2 (CAV2), canine herpesvirus (CHV), canine parvovirus (CPV), canine coronavirus, Leptospira canicola, Leptospira icterohaemorragiae, Leptospira grippotyphosa, Borrelia burgdorferi, Bordetella bronchiseptica and the like, including combinations thereof.
• rabies virus canine adenovirus type 2 (CAV2)
• CAV2 canine herpesvirus
• CPV canine parvovirus
• canine coronavirus canine coronavirus
• Leptospira canicola canine herpesvirus
• Leptospira icterohaemorragiae Leptospira grippotyphosa
• the active antigenic component can include the HA, F, NP genes from the CDV, the capsid gene from CPV, the spike, M, N genes from Canine coronavirus , the HN and F genes from cPi2, genes from Leptospira, genes from Bordetella, genes from Borrelia, and the gB, gC and gD genes from the canine herpesvirus, among others.
• These components can be useful as antigenic compositions or vaccine compositions for protecting canines against disease caused by these pathogens.
• Canine Adenovirus Type 2 (CAV2) is widespread and highly contagious to dogs. It produces symptoms resembling a cold. Generally the first signs of the contagious disease are fever, which usually subsides in one to two days. Affected dogs may have tonsillitis, abdominal tenderness, enlarged liver, vomiting and diarrhea. Acute disease is normally fatal. CAV2 may be inactivated or attenuated and combined with the CDV (and/or cPi2) to produce a multivalent vaccine. Alternatively, immunogens or antigens of CAV2, or epitopes of CAV2 immunogens, such as capsid, matrix, or hexon proteins, can be used.
• Canine Parvovirus is a common intestinal virus which may cause vomiting, diarrhea, gastroenteritis, myocarditis and hepatitis in young dogs. It has been found to be widespread in dogs.
• CPV can be present in the antigenic compositions, suspensions, or solutions of the invention as inactivated, live attenuated, or CPV immunogens, antigens, or epitopes of CPV immunogens, such as the VP1, VP2 (capsid) gene products.
• active antigenic component useful in the compositions and methods of the present invention can comprise one or more immunogens selected from avian pathogens including, but not limited to, Salmonella typhimurium, Salmonella enteritidis, Infectious Bronchitis virus (IBV), Newcastle Disease virus (NDV), egg drop syndrome virus (EDS), Infectious Bursal Disease virus (IBDV), turkey virus, avian influenza virus, Marek's disease virus, Herpesviruses such as infectious laryngotracheitis virus, avian infectious bronchitis virus, avian reovirus, poxviruses including avipox, fowlpox, canarypox, pigeonpox, quailpox, and dovepox, avian polyomavirus, avian pneumovirus, avian rhinotracheitis virus, avian reticuloendotheliosis virus, avian retroviruses, avian endogenous virus, avi
• the active antigenic components can also be the HN and F genes of Newcastle Disease Virus, the polyprotein and VP2 genes from infectious Bursal Disease Virus, the S and N genes from Infectious Bronchitis Virus and the gB and gD genes from Marek's Disease Virus. These components can be used as antigenic compositions or vaccine compositions for protecting avians against disease caused by these pathogens.
• the active antigenic component comprises one or more immunogens from a feline pathogen such as, but not limited to, feline herpesvirus (FHV), feline calicivirus (FCV), feline leukemia virus (FeLV), feline infectious peritonitis virus, feline panleucopenia virus, feline immunodeficiency virus (FIV), rabies virus, and the like, and combinations thereof.
• a feline pathogen such as, but not limited to, feline herpesvirus (FHV), feline calicivirus (FCV), feline leukemia virus (FeLV), feline infectious peritonitis virus, feline panleucopenia virus, feline immunodeficiency virus (FIV), rabies virus, and the like, and combinations thereof.
• the active antigenic component can also include the gB, gC and gD genes from the Feline Herpesvirus, the env and gag/pro genes from the FeLV, the env, gag/pol and tat genes from the FIV virus, the capsid gene from the Feline calicivirus, the S modified gene, M, and N gene from the Feline Infectious Peritonitis Virus, and the VP2 gene from the Feline parvovirus. These components can be useful as antigenic or vaccine compositions for protecting cats against disease caused by these pathogens.
• the active antigenic component can comprise one or more immunogens from an equine pathogen, such as equine herpesvirus (type 1 or type 4), equine influenza virus, equine encephalomyelitis virus (EEV), tetanus, West Nile virus, and the like or combinations thereof.
• equine pathogen such as equine herpesvirus (type 1 or type 4), equine influenza virus, equine encephalomyelitis virus (EEV), tetanus, West Nile virus, and the like or combinations thereof.
• the active antigenic component can also include, the gB, gC, gD and Immediate-Early genes from Equine herpesvirus type 1, the gB, gC, gD and Immediate-Early genes from Equine herpesvirus type 4, the HA, NA, M and NP genes from Equine influenza virus, genes from Eastern Equine Encephalitis Virus, genes from Western Equine Encephalitis Virus, genes from Venezuelan Equine Encephalitis Virus, the prM— M-E genes from the West Nile Virus, and genes from Equine arteritis virus, but are not limited to these sequences. These components can be useful as antigenic compositions or vaccine compositions for protecting horses against disease caused by these pathogens.
• the active antigenic component can comprise one or more immunogens from a bovine pathogen, such as rabies virus, bovine rotavirus, bovine parainfluenza virus type 3 (bCPI2-3), bovine coronavirus, bovine viral diarrhea virus (BVDV), foot and mouth disease virus (FMDV), bovine respiratory syncytial virus (BRSV), Infectious Bovine Rhinotracheitis virus (IBR), Escherichia coli,
• a bovine pathogen such as rabies virus, bovine rotavirus, bovine parainfluenza virus type 3 (bCPI2-3), bovine coronavirus, bovine viral diarrhea virus (BVDV), foot and mouth disease virus (FMDV), bovine respiratory syncytial virus (BRSV), Infectious Bovine Rhinotracheitis virus (IBR), Escherichia coli,
• a bovine pathogen such as rabies virus, bovine rotavirus, bovine parainfluenza virus type 3 (bCPI2-3),
• Pasteurella multocida Pasteurella haemolytica, and the like and combinations thereof.
• the active antigenic component can also be selected from the gB, gC, gD and Immediate-Early genes from Bovine Herpesvirus type 1, the F and G genes from BRSV, the polyprotein, El, E2 genes from BVDV, the HN and F genes from PI3 virus or genes from Rotavirus. These components can be useful as antigenic or vaccine compositions for protecting cattle against disease caused by these pathogens.
• the active antigenic component can comprise one or more immunogens from a porcine pathogen such as, but not limited to, swine influenza virus (SIV), porcine circovirus type 2
• a porcine pathogen such as, but not limited to, swine influenza virus (SIV), porcine circovirus type 2
• PCV-2 porcine reproductive respiratory syndrome virus
• PRRSV porcine reproductive respiratory syndrome virus
• PRV pseudorabies virus
• PV porcine parvovirus
• HCV hog cholera virus
• FMDV Mycoplasma hyopneumoniae
• the active antigenic component can also include the gB, gC, gD and Immediate-Early genes from PRV, the HA, NA, M and NP genes from Swine influenza virus, the polyprotein, El, E2 from Hog Cholera Virus, the ORFl and ORF2 genes from PCV2 virus, the ORF3, ORF4, ORF5, ORF6, or
• ORF7 from PRRSV virus or genes from Mycoplasma hyopneumoniae can be useful as antigenic compositions or vaccine compositions for protecting pigs against disease caused by these pathogens.
• the active antigenic component can comprise sequences encoding a protein expressed in pathogens such as RNA or DNA viruses like HIV, HCV, HBV, HPV, EBV, HSV, CMV, HTLV, Hanta virus, Ebola virus, Marburg virus, Rift Valley fever virus, Lassa virus and influenza virus, hemorrhagic enteriditis virus (HEV), infectious rhinotracheitis virus (IBRV), , among others.
• pathogens such as RNA or DNA viruses like HIV, HCV, HBV, HPV, EBV, HSV, CMV, HTLV, Hanta virus, Ebola virus, Marburg virus, Rift Valley fever virus, Lassa virus and influenza virus, hemorrhagic enteriditis virus (HEV), infectious rhinotracheitis virus (IBRV), , among others.
• pathogens such as RNA or DNA viruses like HIV, HCV, HBV, HPV, EBV, HSV, CMV, HTLV, Hanta virus, E
• the active antigenic component can also be, for example, from any one of the following pathogenic bacteria and their antigens: Actinobacillus species such as Actinobacillus pleuropneumoniae, Bordetella pertussis, Bordetella parapertussis, Bordetella bronchiseptica, Bordetella avium, Chlamydia trachomatis, Chlamydia pneumoniae, Chlamydia psittaci, Klebsiella species such as Klebsiella pneumoniae, Mycobacterium tuberculosis, Mycobacterium pseudotuberulosis, Mycobacterium pneumoniae, Group A Streptococcus, Streptococcus equi, Streptococcus pneumoniae, Streptococcus agalactiae, Streptococcus pyogenes, Streptococcus viridans, Neisseria gonorrhoeae, Erysipeloth
• the active antigenic component may also be derived from a fungus or mold such as Aspergillus flavus, Aspergillus fumigatis, Penicillium species, Fusarium species, Candida species such as Candida trichophyton, Candida parapsilosis, Candida glabrata, Candida dubliniensis, and Candida albicans, Rhizopus species, Cryptococcus species such as Cryptococcus neoformans, Cryptococcus grubii, Cryptococcus gattii, Paracoccidiodes brasiliensis, Histoplasma capsulatum, and other fungi and molds.
• a fungus or mold such as Aspergillus flavus, Aspergillus fumigatis, Penicillium species, Fusarium species, Candida species such as Candida trichophyton, Candida parapsilosis, Candida glabrata, Candida dubliniensis, and Candida albicans, Rhizopus species, Cryptococcus species such as Cryptococcus
• the active antigenic component can also be selected from parasitic antigens derived from parasitic species including, but are not limited to, Plasmodium species, Trypanosome species, Giardia species, Boophilus species, Babesia species, Entamoeba species, Eimeria species, Leishmania species, Schistosoma species, Brugia species, Fascida species, Dirofilaria species, Wuchereria species, Onchocerca species, Treponema species, Toxoplasma species, Cryptococcus species, Coccidia species, Histomoniasis species, Hexamitiasis species, Giardia species, among others; nematodes including Ascaris species, Trichinella species, and the like, helminthes such as flukes, tapeworms, among others; and other like pathogenic organisms.
• Methods for preparing immunogens derived from viruses, bacteria, fungi, molds, protozoa, nematodes, and helminthes are known in the
• immunogens can be, for example, purified secreted antigen virulence factors, such as toxins, cytotoxins, and the like.
• Toxin antigens which are detoxified by modifying (toxoids), which can be administered in combination with an adjuvant such as aluminum hydroxide, and can be used to stimulate the formation of toxin-neutralizing antibodies.
• toxins that may be used as an immunogen include bacterial endotoxins and exotoxins such as lipopolysaccharide, enterotoxins including heat-labile enterotoxins (LT), heat stable enterotoxins (ST), verotoxin (VT), and the like.
• Bacterial exotoxin immunogens are secreted into the surrounding medium, and include, for example, diphtheria toxin (Corynebacterium diphtheriae), tetanus toxin (Clostridium tetani), enterotoxins secreted by Staphylococcus aureus, botulinum toxins (Clostridium botulinum); and toxins produced by algae such as neurotoxins; and the like.
• Heat-stable endotoxins, released by autolysis of the bacteria include, for example, cholera toxins released from the gram negative Vibrio cholerae, colicins produced by intestinal bacteria such as E. coli (bacteriocin).
• Immunogens derived from, or originating from viruses, bacteria, fungi and the like may be produced by in vitro culture methods using appropriate culture medium or host cells lines and conventional methods well known to those of ordinary skill in the art.
• PRRSV may be cultured in an appropriate cell line, such as MA-104 cell line (see US Patent Nos. 5,587,164; 5,866,401; 5,840,563; 6,251,404 among others).
• PCV-2 may be cultured using PK-15 cells line (see US Patent No. 6,391,314); SIV may be cultured on eggs (US Patent No. 6,048,537); and Mycoplasma hyopneumoniae may be cultured in an appropriate culture medium (US Patent Nos.
• CDV can be cultured in mink lung cells, such as those described in U.S. Patent No. 5,178,862.
• Other techniques for the preparation of virus-derived immunogens are known in the art, and described, for example, in Ulmer et al., Science 259: 1745 (1993); Male et al., Advanced Immunology, pages 14.1-14. 15, J.B. Lippincott Co., Philadelphia, Pa. (1989).
• antigenic synthetic peptides that mimic antigenic peptide sequences.
• immunogens may be synthesized using a solid-phase technique as described, for example, in R. B. Merrifield, Science 85:2149- 2154 (1963), purified, and optionally coupled to a carrier protein such as muramyl dipeptide (MDP), bovine serum albumin (BSA), keyhole limpet hemocyanin (KLH), and the like, using a bifunctional coupling agent such as glutaraldehyde, and the like.
• MDP muramyl dipeptide
• BSA bovine serum albumin
• KLH keyhole limpet hemocyanin
• Synthetic antigens are also included within the definition, for example, polyepitopes, flanking epitopes, and other recombinant or synthetically derived antigens. See, e.g., Bergmann et al. (1993) Eur. J. Immunol. 23, 2777-2781 ; Bergmann et al. (1996) J. Immunol. 157, 3242-3249; Suhrbier, A. (1997) Immunol. Cell Biol. 75, 402-408; Gardner et al. (1998) 12th World AIDS Conference, Geneva, Switzerland, Jun. 28-Jul. 3, 1998.
• Antigenic fragments for purposes of the present invention, can usually include at least about 3 amino acids, preferably at least about 5 amino acids, more preferably at least about 10-15 amino acids, and most preferably 25 or more amino acids, of the molecule. There is no critical upper limit to the length of the fragment, which could comprise nearly the full-length protein sequence, or even a fusion protein comprising two or more, or at least one epitope of the protein.
• a minimum structure of a nucleic acid expressing an epitope can comprise nucleotides to encode an epitope, immunogen, or antigen of a protein or polyprotein.
• a nucleic acid encoding a fragment of the total protein or polyprotein more advantageously, comprises or consists essentially of or consists of a minimum of about 21 nucleotides, advantageously at least about 42 nucleotides, and preferably at least about 57, about 87 or about 150 consecutive or contiguous nucleotides of the sequence encoding the total protein or polyprotein.
• Epitope determination procedures such as, generating overlapping peptide libraries (Hemmer B.
• Also provided by the invention is a process for producing a freeze-dried stable antigenic composition or vaccine composition comprising, for example, newcastle disease virus, which comprises the step of lyophilizing a stabilized suspension or solution formed by a live attenuated is newcastle disease virus suspension or solution, mixed with a stabilizer according to the invention and a sugar alcohol according to the invention.
• Freeze-drying or “lyophilization” refers to the process by which a suspension is frozen, after which the water is removed by sublimation at low pressure.
• sublimation refers to a change in the physical properties of a composition, wherein the composition changes directly from a solid state to a gaseous state without becoming a liquid.
• T'g value is defined as the glass transition temperature, which corresponds to the temperature below which the frozen composition becomes vitreous.
• a process for freeze-drying an antigenic suspension or solution according to the invention can comprise the steps of: (a) contacting the antigenic suspension or solution with a stabilizer of the invention, thereby forming a stabilized antigenic suspension or solution; (b) cooling, at atmospheric pressure, the stabilized antigenic suspension or solution to a temperature less than about the T'g value of the stabilized antigenic suspension or solution; (c) drying the stabilized antigenic suspension or solution (i.e., the primary desiccation or sublimation step) by sublimation of ice at low pressure; and (d) removing excess residual water (i.e., secondary drying or desorption step) by further reducing pressure and increasing the temperature of the stabilized antigenic suspension or solution.
• the cooling step (b) can occur at temperatures of less than about -40°C (water freezing step).
• Drying the stabilized antigenic suspensions or solution by sublimation of ice at low pressure (c) can occur at, for example, pressure lower than or equal to about 200 bar, whereas a further reduction in pressure can occur at pressures lower than or equal to about 100 ⁇ b& ⁇ .
• the temperature of the stabilized antigenic suspension or solution during the removal of excess residual water (d) occurs at, for example, temperatures between about 20°C and about 30°C.
• the process of freeze-drying can also be performed with an antigenic suspension or solution comprising live attenuated newcastle disease virus and at least one active antigenic component derived from a pathogen other than a paramyxovirus, which is mixed with a stabilizer according to the invention to obtain a freeze-dried stabilized multivalent antigenic or vaccine composition.
• the moisture content of the freeze-dried material can range from about 0.5% to about 5% w/w, preferably from about 0.5% to about 3%> w/w, and more preferably from about 1.0% to about 2.6% w/w.
• Each step including water freezing, and its removal during the primary and secondary desiccation, subjects the biological ingredients, such as pathogens, in the antigenic suspensions or solutions of the invention to mechanical, physical and biochemical shock, which have potentially adverse effects upon the structure, appearance, stability, antigenicity, infectivity and viability of the pathogens or biological ingredients.
• the stabilizers of the invention allow good stability of live attenuated pathogens like canine paramyxovirus, and maintains the infectivity of, in particular, CDV and cPi2 during the freeze-drying process and during storage.
• the stability can be calculated by the difference between the infectivity titer before the freeze-drying step, and the infectivity titer after 12 months of storage of the freeze- dried stabilized antigenic composition or vaccine composition at 4°C.
• Good stability can advantageously comprise a difference of only 1.2 log ⁇ , and preferably of only 1.0 l°g 1() - Methods for determining the infectivity titer are well known by those skilled in the art. Some methods for determining the infectivity titer are described in the Examples herein.
• the stability can be estimated by fitting the log ⁇ titer and the time points of the titration during the period of storage using linear regression calculations and/or algorithms.
• the stabilizers of the invention allow for freeze-dried pastilles having a good aspect, in other words, having regular form and uniform color.
• An irregular form can be characterized by the presence of all or a part of the pastille stuck to the bottom of the recipient and remaining immobile after turning over and shearing (stuck aspect).
• a pastille having a form of a spool (spooled aspect), or separation of the pastille in two parts, following a horizontal plane (de-duplicated aspect), or a pastille having an aspect of a mousse with irregular holes (spongy aspect), or a pastille having the aspect of foam into the recipient (meringue aspect) have an irregular form and are not accepted.
• the stabilized freeze-dried antigenic compositions or vaccine compositions using a stabilizer according to the present invention and obtained by the process of freeze-drying described above are encompassed in the present invention.
• a further aspect of the present invention provides a kit comprising a first container containing the freeze-dried stabilized antigenic composition or vaccine composition of the invention, and a second containerl containing a diluent.
• the freeze-dried stabilized antigenic composition or vaccine composition can be reconstituted by rehydration with a diluent.
• the diluent is typically water, such as demineralized or distilled water, but can also comprise physiological solutions or buffers known in the art.
• the reconstituted ready-to-use antigenic compositions or vaccine compositions can be administered to an animal by injection through the parenteral or mucosal route, or preferably by oral or ocular administration by spraying.
• administration of such reconstituted ready-to-use antigenic compositions or vaccine compositions can also comprise intranasal, epicutaneous or topical administration.
• composition of the present invention when used to immunize a subject against various infectious diseases. Stability evaluations with a titer analysis of a compressed freeze dried tablet form for various vaccine formulations are also presented.
• manufacture of the composition of the invention may be made by one or orginary skill in the art following the teaching in US 2003/0026813 and WO 01/13896, which are incorporated herein in their entirety.
• the effect of the mannitol on the stability of vaccine compositions was also studied.
• Six different formulas were made as described in Table 1, to show that the foam controlling agent (mannitol) did not have any negative impact on stability of the formulations at 6 month and 9 month intervals.
• the tablets made from the formulations were stored at about 5°C in standard sealed aluminum blister packs for the duration of time before the being reconstituted in diluent and the titers measured. Determination of viral titer of the freeze-dried vaccines was performed by the calculation of the mean titer of three titrations repeated on the same vaccine. The titer results are shown in Table 2.
• compositions were made as shown in Table 4. These compositions were tableted using conventional means for making effervsent tablets. The tablets were mixed in water at room temperature and the foaming measured at the peak foaming. The sodium bicarbonate and citric acid act as an effervescent agent to help mix the compositon in the water.
• the results shown in Figure 2 show that Formula B (containing 15% mannitol) has about 50% less foam than Formula A (containing 0% mannitol).
• Figure 3 shows that Formula D (containing 15% mannitol) has about 60% less foam than Formula C (containing 0% mannitol).
• Figure 4 shows that Formula E (containing 26% mannitol) has about 80% less forming than Formula F (containing 0% mannitol).

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