WO2003057919A2 - The use of histamine h4 receptor antagonist for the treatment of inflammatory response - Google Patents
The use of histamine h4 receptor antagonist for the treatment of inflammatory response Download PDFInfo
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- WO2003057919A2 WO2003057919A2 PCT/US2002/038308 US0238308W WO03057919A2 WO 2003057919 A2 WO2003057919 A2 WO 2003057919A2 US 0238308 W US0238308 W US 0238308W WO 03057919 A2 WO03057919 A2 WO 03057919A2
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- Prior art keywords
- histamine
- receptor
- compound
- mammalian
- inflammation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
-
- 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
- G01N2333/72—Assays involving receptors, cell surface antigens or cell surface determinants for hormones
- G01N2333/726—G protein coupled receptor, e.g. TSHR-thyrotropin-receptor, LH/hCG receptor, FSH
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2500/00—Screening for compounds of potential therapeutic value
- G01N2500/02—Screening involving studying the effect of compounds C on the interaction between interacting molecules A and B (e.g. A = enzyme and B = substrate for A, or A = receptor and B = ligand for the receptor)
Definitions
- the present invention relates to the use of histamine H4 receptor modulators for the prevention, treatment, induction, or other desired modulation of inflammatory responses, inflammation, or diseases and/or conditions that are modulated, affected or caused by inflammation or inflammatory responses.
- Histamine is a multifunctional chemical transmitter that signals through cell surface receptors that are linked to intracellular pathways via guanine nucleotide binding proteins.
- This class of histamine binding cell surface receptor is part of a broad family of receptors called G- protein coupled receptors or GPCRs.
- GPCRs G- protein coupled receptors
- the HI histamine receptor has been cloned ( ⁇ amashita et al. 1991) and is the target of drugs such as diphenhydramine to block the effects of histamine on smooth muscle in allergic responses.
- the H2 histamine receptor has been cloned (Gantz et al. 1991) and is the target of drugs such as ranitidine to block the effects of histamine on acid secretion in the stomach.
- the H3 histamine receptor which was hypothesized to exist in
- histamine is a chemotactic factor for leukocytes, causing their accumulation in areas of allergic challenge such as skin, nose, eyes and lungs (de Vos, 1999).
- the present invention relates to the use of histamine H4 receptor antagonists for the treatment and/or prevention of inflammation and/or inflammatory responses, and the diseases and conditions mediated by inflammation and/or inflammatory responses.
- Modulators of the histamine H4 receptor may be used for modulating inflammatory responses in mammals, including the induction as well as the inhibition of the inflammatory responses depending on whether the histamine H4 receptor modulator is an H4 receptor activity agonist, inverse agonist, or antagonist.
- Inflammation and inflammatory responses mediated by leukocytes or mast cells are inhibited by treatment with antagonists or inhibitors of the histamine H4 receptor.
- Figure 1 The amount of polymorphonuclear cells in the peritoneal lavage after local application of zymosan.
- the circles represent the number for each individual mouse and the bar is the average.
- Figure 2 The amount of polymorphonuclear cells in the peritoneal lavage after local application of monosodium urate crystals.
- the circles represent the number for each individual mouse and the bar is the average.
- Figure 3 The difference in ear thickness between the ear that was exposed to croton oil and the unexposed ear.
- the circles represent the number for each individual mouse and the bar is the average.
- DNA molecules encoding a mammalian histamine H4 receptor have been cloned and characterized and represent a novel member of the class of receptors that couple to G-proteins [Changlu Liu, Sandy J. Wilson, Chester Kuei, and Timothy W. Lovenberg, J Pharmacol.
- the histamine H4 receptors of mouse, rat, and guinea pig have a variety of uses, including, but not limited to, resolving pharmacological differences observed between different mammalian species, particularly since guinea pig, rat, and murine species are commonly used in pre-clinical evaluation of new chemical entities.
- modulators can include agonists, antagonists, and inverse agonists.
- Modulators identified in the assays disclosed herein are useful, for example, as therapeutic agents, prophylactic agents, and diagnostic agents.
- Indications for said therapeutic agents include, but are not limited to, asthma, allergy, inflammation, cardiovascular and cerebrovascular disorders, non-insulin dependent diabetes mellitus, hyperglycemia, constipation, arrhythmia, disorders of the neuroendocrine system, stress, and spasticity, as well as acid secretion, ulcers, airway constriction, and prostate dysfunction.
- the recombinant DNA molecules, and portions thereof have a variety of uses including but not limited to isolating ho ologues of the DNA molecules, identifying and isolating genomic equivalents of the DNA molecules, and identifying, detecting or isolating mutant forms of the DNA molecules.
- the human histairiine H4 receptor refers to protein that can specifically function as a receptor for histamine of the H4 subclass.
- Inflammation is a normal protective or defensive response of mammals elicited by events such as trauma or other physical stimulation, chemical stimulation, infection or presence of a biological agent, or invasion by a foreign body.
- the inflammatory response is characterized by pain, increased temperature, redness, swelling and, in some cases, inhibition or loss of function. All or only some of these signs may be present at a given time, but no one of them is necessarily always present.
- These symptoms are due to a series of interrelated events that result from the action of cells, as well as chemicals or substances produced by cells, and can include vascular dilation, the exudation of fluids and plasma proteins, and the migration of leukocytes into the injured or stimulated area.
- Inflammation mediated diseases or conditions include, but are not limited to, active inflammation, acute inflammation, adhesive inflammation, allergic inflammation, alterative inflammation, atrophic inflammation, catarrhal inflammation, chronic inflammation, chronic active inflammation, degenerative inflammation, exudative inflammation, fibrinopurluent inflammation, f ⁇ brinous inflammation, fibroid inflammation, granulomatous inflammation, hyperplastic inflammation, immune inflammation, interstitial inflammation, necrotic inflammation, productive inflammation, proliferative inflammation, pseudomembranous inflammation, purluent inflammation, sclerosing inflammation, serofibrinous inflammation, serous inflammation, sub-acute inflammation, and supperative inflammation.
- mast cells are an important part of the inflammatory response, and mast cell de-granulation (exocytosis) leads to an inflammatory response that may be initially characterized by a wheal and flare reaction that is modulated by histamine.
- a wide variety of stimuli may cause the activation of mast cells, and subsequently cause them to migrate to a particular location (recruitment) and/or to undergo de-granulation.
- These stimuli may be immunologic (such as antibodies or allergens) or non-immunologic (such as chemical agents) in nature.
- Mast cell activation initiates allergic inflammatory responses, which in turn causes the recruitment of other effector cells that further contribute to the inflammatory response.
- histamine HI receptor is crucial for this type of inflammatory response, while the histamine H2 receptors modulate gastric acid secretion and the histamine H3 receptors affect neurotransmitter release in the central nervous system.
- histamine receptor H4 has been cloned and demonstrated to be expressed in a variety of cells, including but not limited to, leukocytes and mast cells.
- the present invention demonstrates that the histamine H4 receptor is involved the inflammatory response, and particularly involved in leukocyte recruitment to the site of inflammation and that antagonists for this receptor are anti-inflammatory.
- the present invention provides methods for modulating inflammatory responses that are directly or indirectly mediated by the histamine H4 receptor.
- the present invention also provides methods for inhibiting, preventing, ameliorating, inducing, or otherwise affecting inflammatory responses that are mediated by the histamine H4 receptor, through the treatment of a mammal with modulators of the histamine H4 receptor.
- Modulators of the histamine H4 receptor that are useful in the method of the present invention include, but are not limited to, antibodies and antibody fragments that bind the histamine H4 receptor, inhibitors, activators, antagonists, agonists and reverse agonists of the histamine H4 receptor, including, but not limited to, proteins, nucleic acids, or other organic molecules. These modulators are useful for administration to humans in need thereof, and are also useful for veterinary purposes to administer to non-human animals, including but not limited to non-human mammals.
- Histamine is a biogenic amine transmitter that functions in some capacity in nearly all physiological and pathophysiological situations. Histamine acts as a neurotransmitter and neuromodulator in the central nervous system, mediates inflammatory and allergic responses, regulates airway function, controls acid secretion in the stomach, regulates cardiovascular function as well as arterial and venous responses and is without doubt involved in processes yet to be determined. The histamine receptors that mediate these effects are not completely characterized. One way to understand which histamine receptors are involved in these processes is to develop chemical modulators (such as agonists, antagonists, and inverse agonists) of the receptors as research tools and therapeutic entities.
- chemical modulators such as agonists, antagonists, and inverse agonists
- Recombinant host cells expressing the mammalian histamine H4 receptor can be used to provide materials for a screening method to identify such agonists and antagonists.
- this invention of the mammalian histamine H4 receptor directly teaches a way to identify new agonists and antagonists that may prove useful as research tools or may be used as therapeutics to treat disorders directly or indirectly involving histamine receptors, such as inflammatory responses and inflammation.
- Assays to detect compound interaction or modulation of the histamine H4 receptor include, but are not limited to, direct ligand binding assays, competitive (or displacement) ligand binding assays, or functional assays that measure the response of the receptor to the ligand, for example by production of cAMP. Although these assays are well known to those skilled in the art, they were previously not possible prior to obtaining the recombinant molecules taught herein.
- Monospecific antibodies to mammalian histamine H4 receptor are purified from mammalian antisera containing antibodies reactive against mammalian histamine H4 receptor or are prepared as monoclonal antibodies reactive with mammalian histamine H4 receptor using the technique of Kohler and Milstein, Nature (1975) 256:495-497.
- Monospecific antibody as used herein is defined as a single antibody species or multiple antibody species with homogenous binding characteristics for mammalian histamine H4 receptor.
- Homogenous binding as used herein refers to the ability of the antibody species to bind to a specific antigen or epitope, such as those associated with the mammalian histamine H4 receptor, as described above.
- Mammalian histamine H4 receptor specific antibodies are raised by immunizing animals such as mice, rats, guinea pigs, rabbits, goats, horses and the like, with rabbits being preferred, with an appropriate concentration of mammalian histamine H4 receptor either with or without an immune adjuvant.
- Preimmune serum is collected prior to the first immunization.
- Each animal receives between about 0.1 mg and about 1000 mg of mammalian histamine H4 receptor associated with an acceptable immune adjuvant.
- acceptable adjuvants include, but are not limited to, Freund's complete, Freund's incomplete, alum-precipitate, water in oil emulsion containing Corvnebacterium parvum and tRNA.
- the initial immunization consists of mammalian histamine H4 receptor in, preferably, Freund's complete adjuvant at multiple sites either subcutaneously (SC), intraperitoneally (IP) or both.
- SC subcutaneously
- IP intraperitoneally
- Each animal is bled at regular intervals, preferably weekly, to determine antibody titer.
- the animals may or may not receive booster injections following the initial immunization. Those animals receiving booster injections are generally given an equal amount of the antigen in Freund's incomplete adjuvant by the same route. Booster injections are given at about three week intervals until maximal titers are obtained. At about 7 days after each booster immunization or about weekly after a single immunization, the animals are bled, the serum collected, and aliquots are stored at about - 20°C.
- Monoclonal antibodies (rnAb) reactive with mammalian histamine H4 receptor are prepared by immunizing inbred mice, preferably Balb/c, with mammalian Mstamine H4 receptor and any fragments thereof.
- the mice are immunized by the IP or SC route with about 0.1 mg to about 10 mg, preferably about 1 mg, of mammalian histamine H4 receptor in about 0.5 ml buffer or saline incorporated in an equal volume of an acceptable adjuvant, as discussed above. Freund's complete adjuvant is preferred.
- the mice receive an initial immunization on
- mice are given one or more booster immunizations of about 0.1 to about 10 mg of mammalian histamine H4 receptor in a buffer solution such as phosphate buffered saline by the intravenous (TV) route.
- a buffer solution such as phosphate buffered saline
- Lymphocytes from antibody positive mice, preferably splenic lymphocytes, are obtained by removing spleens from immunized mice by standard procedures known in the art.
- Hybridoma cells are produced by mixing the splenic lymphocytes with an appropriate fusion partner, preferably myeloma cells, under conditions which will allow the formation of stable hybridomas.
- Fusion partners may include, but are not limited to, mouse myelomas
- the antibody producing cells and myeloma cells are fused in polyethylene glycol, about 1000 mol. wt, at concentrations from about 30% to about 50%.
- Fused hybridoma cells are selected by growth in hypoxanthine, thymidine and aminopterin supplemented Dulbecco's Modified
- DMEM Eagles Medium
- SPIRA solid phase immunoradioassay
- Hybridoma cells from antibody positive wells are cloned by a technique, such as the soft agar technique of MacPherson, "Soft Agar Techniques", Tissue Culture Methods and Applications (Kruse and Paterson (Eds.), Academic Press, 1973).
- Monoclonal antibodies are produced in vivo by injection of pristane primed Balb/c mice, approximately 0.5 ml per mouse, with about 2 x 10 6 to about 6 x 10 6 hybridoma cells about four days after priming. Ascites fluid is collected at approximately eight to twelve days after cell transfer and the monoclonal antibodies are purified by techniques known in the art.
- In vitro production of anti-mammalian histamine H4 receptor mAb is carried out by growing the hybridoma in DMEM containing about 2% fetal calf serum to obtain sufficient quantities of the specific mAb.
- the mAb are purified by techniques known in the art.
- Antibody titers of ascites or hybridoma culture fluids are determined by various sero logical or immunological assays which include, but are not limited to, precipitation, passive agglutination, enzyme- linked immunosorbent antibody (ELISA) technique and radioimmunoassay (RIA) techniques. Similar assays are used to detect the presence of mammalian histamine H4 receptor in body fluids or tissue and cell extracts.
- monospecific antibodies may be utilized to produce antibodies specific for mammalian histamine H4 receptor polypeptide fragments, or full-length nascent mammalian histamine H4 receptor polypeptide, or the individual mammalian histamine H4 receptor epitopes.
- monospecific antibodies may be generated that are specific for only one species of mammalian histamine H4 receptor portion or the fully functional histamine H4 receptor.
- antibodies that are specific for the histamine H4 receptor may cause a change in the functional activity of the receptor, including but not limited to, causing the receptor to be activated or inactivated, blocked from binding its ligand, blocked from releasing its bound ligand, or prevented from functioning in the normal fashion associated with a histamine H4 receptor.
- Nucleotide sequences that are complementary to the human histamine H4 receptor encoding DNA sequence can be synthesized for antisense therapy.
- These antisense molecules may be DNA, stable derivatives of DNA such as phosphorothioates or methylphosphonates, RNA, stable derivatives of RNA such as 2'-0-alkylRNA, or other human histamine H4 receptor antisense oligonucleotide mimetics.
- Human histamine H4 receptor antisense molecules may be introduced into cells by microinjection, liposome encapsulation or by expression from vectors harboring the antisense sequence. Human histamine H4 receptor antisense therapy may be particularly useful for the treatment of diseases where it is beneficial to reduce human histamine H4 receptor activity.
- Human histamine H4 receptor gene therapy may be used to introduce human histamine H4 receptor into the cells of target organisms.
- the human histamine H4 receptor gene can be ligated into viral vectors which mediate transfer of the human histamine H4 receptor DNA by infection of recipient host cells.
- Suitable viral vectors include retrovirus, adenovirus, adeno- associated virus, herpes virus, vaccinia virus, poliovirus and the like.
- human histamine H4 receptor DNA can be transferred into cells for gene therapy by non-viral techniques including receptor-mediated targeted DNA transfer using ligand-DNA conjugates or adenovirus-ligand-DNA conjugates, lipofection membrane fusion or direct microinjection.
- Human histamine H4 receptor gene therapy may be particularly useful for the treatment of diseases where it is beneficial to elevate human histamine H4 receptor activity.
- the present invention is also directed to methods for screening for compounds that modulate the expression of DNA or RNA encoding mammalian histamine H4 receptor as well as the function of mammalian histamine H4 receptor protein in vitro and in vivo. Compounds that modulate these activities may be DNA, RNA, peptides, proteins, or non-proteinaceous organic molecules.
- Compounds may modulate by increasing or attenuating the expression of DNA or RNA encoding mammalian histamine H4 receptor, or the function of mammalian histamine H4 receptor protein.
- Compounds that modulate the expression of DNA or RNA encoding mammalian histamine H4 receptor or the function of mammalian histamine H4 receptor protein may be detected by a variety of assays.
- the assays may be a simple "yes/no" assay to determine whether there is a change in expression of nucleic acid encoding the receptor, or a change in the function or activity of the receptor protein.
- the assay may be made quantitative by comparing the expression or function of a test sample with the levels of receptor expression or receptor protein function in a standard sample. Modulators identified in this process are useful as therapeutic agents, research tools, and diagnostic agents.
- Kits containing mammalian histamine H4 receptor DNA or RNA, antibodies to mammaUan histamine H4 receptor, or mammalian histamine H4 receptor protein may be prepared. Such kits are used to detect DNA that hybridizes to mammaUan histamine H4 receptor DNA or to detect the presence of mammalian histamine H4 receptor protein or peptide fragments in a sample. Such characterization is useful for a variety of purposes including but not limited to forensic analyses, diagnostic applications, and epidemiological studies.
- the DNA molecules, RNA molecules, recombinant protein and antibodies of the present invention may be used to screen and measure levels of mammalian histamine H4 receptor DNA, mammalian histamine H4 receptor RNA or mammalian histamine H4 receptor protein.
- the recombinant proteins, DNA molecules, RNA molecules and antibodies lend themselves to the formulation of kits suitable for the detection and typing of mammalian histamine H4 receptor.
- Such a kit would comprise a compartmentalized carrier suitable to hold in close confinement at least one container.
- the carrier would further comprise reagents such as recombinant mammalian histamine H4 receptor protein or anti-mammalian histamine H4 receptor antibodies suitable for detecting mammaUan histamine H4 receptor.
- the carrier may also contain a means for detection such as labeled antigen or enzyme substrates or the like.
- Nucleotide sequences that are complementary to the mammalian histamine H4 receptor encoding DNA sequence can be synthesized for antisense therapy.
- These antisense molecules may be DNA, stable derivatives of DNA such as phosphorothioates or methylphosphonates, RNA, stable derivatives of RNA such as 2'-0-alkylRNA, or other mammalian histamine H4 receptor antisense oligonucleotide mimetics.
- Mammalian histamine H4 receptor antisense molecules may be introduced into cells by microinjection, liposome encapsulation or by expression from vectors harboring the antisense sequence, mammalian histamine H4 receptor antisense therapy may be particularly useful for the treatment of diseases where it is beneficial to reduce mammalian histamine H4 receptor activity.
- Mammalian histamine H4 receptor gene therapy may be used to introduce mammalian histamine H4 receptor into the cells of target organisms.
- the mammalian histamine H4 receptor gene can be Hgated into viral vectors that mediate transfer of the mammalian histamine H4 receptor DNA by infection of recipient host cells. Suitable viral vectors include retrovirus, adenovirus, adeno-associated virus, herpes virus, vaccinia virus, poliovirus and the like.
- mammalian histamine H4 receptor DNA can be transferred into cells for gene therapy by non-viral techniques including receptor-mediated targeted DNA transfer using ligand-DNA conjugates or adenovirus-ligand-DNA conjugates, lipofection membrane fusion or direct microinjection.
- Mammalian histamine H4 receptor gene therapy may be particularly useful for the treatment of diseases where it is beneficial to elevate mammalian histamine H4 receptor activity.
- compositions comprising mammalian histamine H4 receptor DNA, mammalian histamine H4 receptor RNA, or mammalian histamine H4 receptor protein, or modulators of mammalian histamine H4 receptor activity, may be formulated according to known methods such as by the admixture of a pharmaceutically acceptable carrier. Examples of such carriers and methods of formulation may be found in Remington's Pharmaceutical Sciences. To form a pharmaceutically acceptable composition suitable for effective administration, such compositions will contain an effective amount of the protein, DNA, RNA, or modulator.
- compositions of the invention are administered to an individual in amounts sufficient to treat or diagnose disorders in which modulation of mammalian histamine H4 receptor-related activity is indicated.
- the effective amount may vary according to a variety of factors such as the individual's condition, weight, sex and age. Other factors include the mode of administration.
- the pharmaceutical compositions may be provided to the individual by a variety of routes such as subcutaneous, topical, oral and intramuscular.
- the term "chemical derivative” describes a molecule that contains additional chemical moieties that are not normally a part of the base molecule. Such moieties may improve the solubility, half-life, absorption, etc. of the base molecule. Alternatively the moieties may attenuate undesirable side effects of the base molecule or decrease the toxicity of the base molecule. Examples of such moieties are described in a variety of texts, such as Remington's Pharmaceutical Sciences. Compounds identified according to the methods disclosed herein may be used alone at appropriate dosages defined by routine testing in order to obtain optimal inhibition of the mammalian histamine H4 receptor or its activity while minimizing any potential toxicity. In addition, co-administration or sequential administration of other agents may be desirable.
- the present invention also has the objective of providing suitable topical, oral, systemic and parenteral pharmaceutical formulations for use in the novel methods of treatment of the present invention.
- compositions containing compounds or modulators identified according to this invention as the active ingredient for use in the modulation of mammalian histamine H4 receptor receptors can be administered in a wide variety of therapeutic dosage forms in conventional vehicles for administration.
- the compounds or modulators can be administered in such oral dosage forms as tablets, capsules (each including timed release and sustained release formulations), pills, powders, granules, elixirs, tinctures, solutions, suspensions, syrups and emulsions, or by injection.
- intravenous both bolus and infusion
- intraperitoneal subcutaneous
- topical with or without occlusion
- intramuscular form all using forms well known to those of ordinary skill in the pharmaceutical arts.
- An effective but non-toxic amount of the compound desired can be employed as a mammalian histamine H4 receptor modulating agent.
- the daily dosage of the products may be varied over a wide range from 0.01 to 1,000 mg per patient, per day.
- the compositions are preferably provided in the form of scored or un-scored tablets containing 0.01, 0.05, 0.1, 0.5, 1.0, 2.5, 5.0, 10.0, 15.0, 25.0, and 50.0 milligrams of the active ingredient for the symptomatic adjustment of the dosage to the patient to be treated.
- An effective amount of the drug is ordinarily supplied at a dosage level of from about 0.0001 mg/kg to about 100 mg/kg of body weight per day. The range is more particularly from about 0.001 mg/kg to 10 mg/kg of body weight per day.
- the dosages of the mammalian histamine H4 receptor modulators are adjusted when combined to achieve desired effects.
- dosages of these various agents may be independently optimized and combined to achieve a synergistic result wherein the pathology is reduced more than it would be if either agent were used alone.
- compounds or modulators of the present invention may be administered in a single daily dose, or the total daily dosage may be administered in divided doses of two, three or four times daily.
- compounds or modulators for the present invention can be administered in intranasal form via topical use of suitable intranasal vehicles, or via transdermal routes, using those forms of transdermal skin patches well known to those of ordinary skill in that art.
- the dosage administration will, of course, be continuous rather than intermittent throughout the dosage regimen.
- the active agents can be administered concurrently, or they each can be administered at separately staggered times.
- the dosage regimen utilizing the compounds or modulators of the present invention is selected in accordance with a variety of factors including type, species, age, weight, sex and medical condition of the patient; the severity of the condition to be treated; the route of administration; the renal and hepatic function of the patient; and the particular compound thereof employed.
- a physician or veterinarian of ordinary skill can readily determine and prescribe the effective amount of the drug required to prevent, counter or arrest the progress of the condition.
- Optimal precision in achieving concentrations of drug within the range that yields efficacy without toxicity requires a regimen based on the kinetics of the drug's availability to target sites. This involves a consideration of the distribution, equilibrium, and elimination of a drug.
- the compounds or modulators herein described in detail can form the active ingredient, and are typically administered in admixture with suitable pharmaceutical diluents, excipients or carriers (collectively referred to herein as "carrier” materials) suitably selected with respect to the intended form of aclministration, that is, oral tablets, capsules, elixirs, syrups and the like, and consistent with conventional pharmaceutical practices.
- carrier suitable pharmaceutical diluents, excipients or carriers
- the active drug component can be combined with an oral, non-toxic pharmaceutically acceptable inert carrier such as ethanol, glycerol, water and the like.
- suitable binders, lubricants, disintegrating agents and coloring agents can also be incorporated into the mixture.
- suitable binders include, without limitation, starch, gelatin, natural sugars, such as glucose or beta-lactose, corn sweeteners, natural and synthetic gums, such as acacia, tragacanth or sodium alginate, carboxymethylcellulose, polyethylene glycol, waxes and the like.
- Lubricants used in these dosage forms include, without limitation, sodium oleate, sodium stearate, magnesium stearate, sodium benzoate, sodium acetate, sodium chloride and the like.
- Disintegrators include, without limitation, starch, methylcellulose, agar, bentonite, xanthan gum and the like.
- the active drug component can be combined in suitably flavored suspending or dispersing agents such as the synthetic and natural gums, for example, tragacanth, acacia, methyl-cellulose and the like.
- suspending or dispersing agents such as the synthetic and natural gums, for example, tragacanth, acacia, methyl-cellulose and the like.
- Other dispersing agents include glycerin and the like.
- sterile suspensions and solutions are desired.
- Isotonic preparations that generally contain suitable preservatives are employed when intravenous administration is desired.
- Topical preparations containing the active drug component can be admixed with a variety of carrier materials well known in the art, such as, e.g., alcohols, aloe vera gel, allantoin, glycerine, vitamin A and E oils, mineral oil, PPG2 myristyl propionate, and the like, to form, e.g., alcoholic solutions, topical cleansers, cleansing creams, skin gels, skin lotions, and shampoos in cream or gel formulations.
- carrier materials well known in the art, such as, e.g., alcohols, aloe vera gel, allantoin, glycerine, vitamin A and E oils, mineral oil, PPG2 myristyl propionate, and the like, to form, e.g., alcoholic solutions, topical cleansers, cleansing creams, skin gels, skin lotions, and shampoos in cream or gel formulations.
- the compounds or modulators of the present invention can also be administered in the form of liposome delivery systems, such as small unilamellar vesicles, large unilamellar vesicles and multilamellar vesicles.
- Liposomes can be formed from a variety of phospholipids, such as cholesterol, stearylamine or phosphatidylcholines.
- Compounds of the present invention may also be delivered by the use of monoclonal antibodies as individual carriers to which the compound molecules are coupled.
- the compounds or modulators of the present invention may also be coupled with soluble polymers as targetable drug carriers.
- Such polymers can include polyvinyl-pyrrolidone, pyran copolymer, polyhydroxypropylmethacryl-amidephenol, polyhydroxy-ethylaspartamidephenol, or polyethyi-eneoxidepolylysine substituted with palmitoyl residues.
- the compounds or modulators of the present invention may be coupled to a class of biodegradable polymers useful in achieving controlled release of a drug, for example, polylactic acid, polyepsilon caprolactone, polyhydroxy butyric acid, polyorthoesters, polyacetals, polydihydro-pyrans, polycyanoacrylates and cross-linked or amphipathic block copolymers of hydro gels.
- biodegradable polymers useful in achieving controlled release of a drug
- a drug for example, polylactic acid, polyepsilon caprolactone, polyhydroxy butyric acid, polyorthoesters, polyacetals, polydihydro-pyrans, polycyanoacrylates and cross-linked or amphipathic block copolymers of hydro gels.
- the compounds or modulators may be administered in capsule, tablet, or bolus form or alternatively they can be mixed in the animals feed.
- the capsules, tablets, and boluses are comprised of the active ingredient in combination with an appropriate carrier vehicle such as starch, talc, magnesium stearate, or di-calcium phosphate.
- suitable carrier vehicle such as starch, talc, magnesium stearate, or di-calcium phosphate.
- These unit dosage forms are prepared by intimately mixing the active ingredient with suitable finely-powdered inert ingredients including diluents, fillers, disintegrating agents, and/or binders such that a uniform mixture is obtained.
- An inert ingredient is one that will not react with the compounds or modulators and which is non-toxic to the animal being treated.
- Suitable inert ingredients include starch, lactose, talc, magnesium stearate, vegetable gums and oils, and the like. These formulations may contain a widely variable amount of the active and inactive ingredients depending on numerous factors such as the size and type of the animal species to be treated and the type and severity of the infection.
- the active ingredient may also be administered as an additive to the feed by simply mixing the compound with the feedstuff or by applying the compound to the surface of the feed. Alternatively the active ingredient may be mixed with an inert carrier and the resulting composition may then either be mixed with the feed or fed directly to the animal.
- Suitable inert carriers include corn meal, citrus meal, fermentation residues, soya grits, dried grains and the like. The active ingredients are intimately mixed with these inert carriers by grinding, stirring, milling, or tumbling such that the final composition contains from 0.001 to 5% by weight of the active ingredient.
- the compounds or modulators may alternatively be administered parenterally via injection of a formulation consisting of the active ingredient dissolved in an inert liquid carrier. Injection may be either intramuscular, intra-ruminal, intratracheal, or subcutaneous.
- the injectable formulation consists of the active ingredient mixed with an appropriate inert liquid carrier.
- Acceptable liquid carriers include the vegetable oils, such as peanut oil, cottonseed oil, sesame oil and the like as well as organic solvents such as solketal, glycerol formal and the like.
- aqueous parenteral formulations may also be used.
- the vegetable oils are the preferred liquid carriers.
- the formulations are prepared by dissolving or suspending the active ingredient in the liquid carrier such that the final formulation contains from 0.005 to 10% by weight of the active ingredient.
- Topical application of the compounds or modulators is possible through the use of a liquid drench or a shampoo containing the instant compounds or modulators as an aqueous solution or suspension.
- These formulations generally contain a suspending agent such as bentonite and normally will also contain an antifoaming agent.
- Formulations containing from 0.005 to 10% by weight of the active ingredient are acceptable.
- Preferred formulations are those containing from 0.01 to 5% by weight of the instant compounds or modulators.
- This example demonstrates the discovery for the first time that histamine H4 receptor antagonists can block the peritonitis induced by zymosan, which is the insoluble polysaccharide component on the cell wall of Saccharomyces cerevisiae. This is commonly used to induce peritonitis in mice and appears to act in a mast cell dependent manner.
- Drugs were stored at room temperature, in the dark. On the day of the experiment, drugs were dissolved in sterile PBS as depicted below, and generously vortexed.
- H4 ANTAG #1 was prepared at 10 mg/5ml, and injected at 5 ml/kg.
- Imetit was prepared at 5 mg/5 ml, and injected at 5 ml kg.
- Thioperamide was prepared at 5 mg/5 ml, and injected at 5 ml/kg.
- Time -15 minutes Compounds or PBS administered s.c. at the reported doses.
- Time +2 hours Compounds or PBS administered s.c. at the reported doses.
- Time +4 hours Peritoneal cavities were washed four hours later with 3 ml of PBS containing 3 mM EDTA, and the number of migrated leukocytes determined, by taking an aliquot (100 ⁇ l) of the lavage fluid and diluting 1:10 in Turk's solution (0.01% crystal violet in 3% acetic acid). The samples were then vortexed and 10 ⁇ l of the stained cell solution were placed in a Neubauer haemocytometer. Differential cell counts were performed using a light microscope (Olympus B061). In view of their chromatic characteristics and their nucleus and cytoplasm appearance, polymorphonuclear leukocytes (PMN; >95% neutrophils) could be easily identified.
- PMN polymorphonuclear leukocytes
- mice Data are shown for single mice, and also shown as mean ⁇ S.d. or SEM of eight mice per group. The percent of inhibition is also shown. Statistical differences were determined by Anova followed by Bonferroni's post-hoc test.
- H4 ANTAG #1 a histamine H4 receptor antagonist
- thioperamide which is a dual H3/H4 receptor antagonist
- Imetit The dual H3/H4 receptor agonist, Imetit, does not have any effect. This shows that an antagonist of the histamine H4 receptor can block inflammation induced by zymosan.
- histamine H4 receptor antagonists can block the peritonitis induced by sodium urate crystals. Such crystals are the primary cause of the inflammation associated with acute gouty arthritis.
- H4 ANTAG #1 was stored at room temperature in the dark. On the day of the experiment, H4 ANTAG #1 was dissolved in phosphate buffered saline (PBS) to a concentration of 3 mg/ml. At Time -15 minutes. H4 ANTAG #1 was administered s.c. at the dose of 10 mg/kg, whereas the control group received the vehicle alone (10 ml/kg). Mice received 3 mg mono sodium urate crystals (MSU) given intra-peritoneally at Time 0. At Time +2 hours and Time +4 hours, H4 ANTAG #1 (10 mg/kg) or vehicle (10 ml/kg) were given s.c.
- PBS phosphate buffered saline
- Time +6 hours Peritoneal cavities were washed 6 hours later with 3 ml of PBS containing 3 mM EDTA, and the number of migrated leukocytes determined, by taking an aliquot (100 ⁇ l) of the lavage fluid and diluting 1:10 in Turk's solution (0.01% crystal violet in 3% acetic acid). The samples were then vortexed and 10 ⁇ l of the stained cell solution were placed in a Neubauer hematocytometer. Differential cell counts were performed using a light microscope (Olympus B061). In view of their chromatic characteristics and their nucleus and cytoplasm appearance, cells polymorphonuclear cells (PMN, >95% neutrophils) could be easily differentiated.
- PMN polymorphonuclear cells
- mice Data are shown for ' single mice, and also shown as mean ⁇ S.d. of (n) mice per group.
- mice were treated with either PBS (10 ml/kg) or H4 ANTAG #1 (10 mg/kg) at -15 minutes, +2 hours and +4 hours, and with 3 mg MSU crystals at Time 0.
- PMN influx into the peritoneal cavity was measured at the six-hour time point after collection of the lavage fluids and specific staining as described in the experimental section.
- This example demonstrates the discovery for the first time that histamine H4 receptor antagonists can block the inflammation associated with topical application of croton oil.
- mice Male or female ICR derived mice weighing 22 ⁇ 1 gms were used. Space allocation for five animals was 45 x 23 x 15 cm. Mice were housed in APEC R cages. All animals were maintained in a controlled temperature (22 o C - 24 o C) and humidity (60% - 80%) environment with twelve-hour light/dark cycles. Free access to standard lab chow for Mice (LabDiet Rodent Diet, PMI Nutrition International, USA) and tap water was granted.
- Acetone (Wako, Japan), Croton oil (Sigma,USA), Indomethacin (Sigma, USA) and Pyrogen free saline (Astar, Taiwan).
- H4 ANTAG #1 (10 mg/kg) and vehicle (0.9% NaCl) as well as the positive control Indomethacin (30 mg/kg) were administered subcutaneously to test animals at 30 minutes before and 2, 4 hours after Croton oil (8% in 20 ⁇ l acetone) was applied topically. Ear swelling was measured by Dyer model micrometer gauge six hours after Croton oil as an index of inflammation.
- the human histamine H4 receptor cDNAs (collectively referred to as pH4R) were cloned into the mammalian expression vector pCIneo.
- the human histamine H4 receptor cDNA clone was isolated from the human thalamus cDNA library.
- the full length cDNA was used as the template for PCR using specific primers with EcoRl and Notl sites for cloning.
- the PCR product was purified on a column (Wizard PCR DNA purification kit from Promega) and digested with Not I and EcoRl (NEB) to create cohesive ends.
- the product was purified by a low melting agarose gel electrophoresis.
- the pCIneo vector was digested with EcoRl and Notl enzymes and subsequently purified on a low melt agarose gel.
- the linear vector was used to ligate to the human histamine H4 receptor cDNA inserts.
- Recombinants were isolated, designated human histamine H4 receptor, and used to transfect mammalian cells (SK-N-MC cells) by CaPO ⁇ DNA precipitation.
- Stable cell clones were selected by growth in the presence of G418. Single G418 resistant clones were isolated and shown to contain the intact human histamine H4 receptor gene.
- Clones containing the human histamine H4 receptor cDNAs were analyzed for pH4R expression by measuring inhibition of adenylate cyclase in response to histamine according to the method of (Konig et al., 1991) or by directly measuring cAMP accumulation by radioimmunoassay using Flashplates (NEN). Expression was also analyzed using [ 3 H]-histamine binding assays (Clark et al., 1992). Recombinant plasmids containing human histamine H4 receptor encoding DNA were used to transform the mammalian COS7 or CHO cells or HEK293 or L-cells or SK-N-MC cells.
- Cells expressing human histamine H4 receptor are used to test for expression of human histamine H4 receptor and for [ 3 H]-histamine binding activity. These cells are used to identify and examine other compounds for their ability to modulate, inhibit or activate the human histamine H4 receptor and to compete for radioactive histamine binding.
- Cassettes containing the human histamine H4 receptor cDNA in the positive orientation with respect to the promoter are ligated into appropriate restriction sites 3' of the promoter and identified by restriction site mapping and or sequencing.
- cDNA expression vectors are introduced into fibroblastic host cells for example COS-7 (ATCC# CRL1651), and CV-1 tat rSackevitz et al., Science (1987) 238:1575], 293, L (ATCC# CRL6362), SK-N-MC (ATCC# HTB-10) by standard methods including but not limited to electroporation, or chemical procedures (cationic liposomes, DEAE dextran, calcium phosphate). Transfected cells and cell culture supernatants are harvested and analyzed for human histamine H4 receptor expression as described herein.
- All of the vectors used for mammaUan transient expression can be used to establish stable cell lines expressing human histamine H4 receptor.
- Unaltered human histamine H4 receptor cDNA constructs cloned into expression vectors are expected to program host cells to make human histamine H4 receptor protein.
- the transfection host cells include, but are not limited to, CV-l-P rSackevitz et al., Science (1987) 238:1575], tk-L [Wigler et al. Cell (1977) 11:223], NS/0, and dHFr- CHO [Kaufman and Sharp, J. Mol. Biol. (1982) 159:601].
- Human histamine H4 receptor cDNA constructs are also ligated into vectors containing amplifiable drug-resistance markers for the production of mammalian cell clones synthesizing the highest possible levels of human histamine H4 receptor. Following introduction of these constructs into cells, clones containing the plasmid are selected with the appropriate agent, and isolation of an over-expressing clone with a high copy number of plasmids is accomplished by selection in increasing doses of the agent.
- the expression of recombinant human histamine H4 receptor is achieved by transfection of full-length human histamine H4 receptor cDNA into a mammalian host cell.
- Human SK-N-MC cells were transfected with pH4R and selected in the presence of neomycin for ten days. Individual colonies were picked and grown in six well-dishes. Cells were then plated onto 96 well-plates and grown to confluence. Cells were incubated for twenty minutes with isobutylmethylxanthine (1 mM). Cells were then stimulated with histamine (lOOpM - lOOuM) for five minutes. Cells were then stimulated with forskolin (3uM) and allowed to incubate at 37°C for twenty minutes. Cells were then treated with 0.1N hydrochloric acid.
- SK-N-MC cells or COS7 ceUs that were transiently transfected with pH4R and grown in 150 cm tissue culture dishes. Cells were washed with saline solution, scraped with a cell scraper and collected by centrifugation (1000 rpm, 5 min). SK-N-MC or COS7 cells expressing human histamine H4 receptor binds 3 H-histamine with high affinity ( Figure 4).
- Cell membranes are prepared by homogenization of the cell pellet in 20 mM Tris-HCl with a polytron tissue homogenizer for ten seconds at high speed. Homogenate is centrifuged at 1000 rpm for five minutes at 4°C.
- the supernatant is then collected and centrifuged at 20,000 x g for twenty-five minutes at 4°C.
- the final pellet is re-suspended in 50 mM Tris- HCl.
- Cell membranes are incubated with 3 H-histamine (.5 nM - 70 nM) in the presence or absence of excess histamine (10000 nM). Incubation occurs at room temperature for forty- five minutes.
- Membranes are harvested by rapid filtration over Whatman GF/C filters and washed four times with ice cold 50 mM Tris HC1. Filters are then dried, mixed with scintillant and counted for radioactivity.
- SK-N-MC or COS7 cells expressing human histamine H4 receptor are used to measure the affinity of binding of other compounds and their ability to displace -1H-ligand binding by incubating the above described reaction in the presence of various concentrations of inhibitor or compound to be tested.
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JP2003558212A JP2005539207A (en) | 2001-12-21 | 2002-12-02 | Use of a histamine H4 receptor antagonist for the treatment of an inflammatory response |
CA002471214A CA2471214A1 (en) | 2001-12-21 | 2002-12-02 | The use of histamine h4 receptor antagonist for the treatment of inflammatory response |
EP02782397A EP1458885A2 (en) | 2001-12-21 | 2002-12-02 | The use of histamine h4 receptor antagonist for the treatment of inflammatory response |
AU2002348265A AU2002348265A1 (en) | 2001-12-21 | 2002-12-02 | The use of histamine h4 receptor antagonist for the treatment of inflammatory response |
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EP1545596A2 (en) * | 2002-09-06 | 2005-06-29 | Janssen Pharmaceutica N.V. | Use of histamine h4 receptor modulators for the treatment of allergy and asthma |
US9138431B2 (en) | 2013-08-06 | 2015-09-22 | Bridge Pharma, Inc. | Methods of treatment of histamine H-4 receptor-related pruritus |
US9345697B2 (en) | 2013-08-06 | 2016-05-24 | Bridge Pharma, Inc. | Methods of treatment of non-histaminic pruritus |
US9439895B2 (en) | 2013-08-06 | 2016-09-13 | Bridge Pharma, Inc. | Methods of treating pruritic conditions mediated through non-histaminergic mechanisms in diabetic patients |
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US20040127395A1 (en) * | 2002-09-06 | 2004-07-01 | Desai Pragnya J. | Use of histamine H4 receptor modulators for the treatment of allergy and asthma |
WO2005031308A2 (en) * | 2003-09-26 | 2005-04-07 | Janssen Pharmaceutica N.V. | Analyzing histamine h4 receptor-mediated effects in whole blood |
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WO2001085786A2 (en) * | 2000-05-05 | 2001-11-15 | Wyeth | Human histamine h4 receptor |
WO2002056871A2 (en) * | 2001-01-17 | 2002-07-25 | Pfizer Limited | Histamine receptor antagonists |
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Non-Patent Citations (4)
Title |
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LIU, C. ET AL: "Comparison of human, mouse, rat and guinea pig histamine H4 receptors reveals substantial pharmacological species variation" THE JOURNAL OF PHARMACOLOGY AND EXPERIMENTAL THERAPEUTICS, vol. 299, no. 1, 2001, pages 121-130, XP009013631 cited in the application * |
NAKAMURA T ET AL: "Molecular cloning and characterization of a new human histamine receptor, HH4R" BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, ACADEMIC PRESS INC. ORLANDO, FL, US, vol. 279, December 2000 (2000-12), pages 615-620, XP002185552 ISSN: 0006-291X * |
ODA T ET AL: "Molecular cloning and characterization of a novel type of histamine receptor preferentially expressed in leukocytes" JOURNAL OF BIOLOGICAL CHEMISTRY, AMERICAN SOCIETY OF BIOLOGICAL CHEMISTS, BALTIMORE, MD, US, vol. 275, no. 47, 24 November 2000 (2000-11-24), pages 36781-36786, XP002164117 ISSN: 0021-9258 * |
O'REILLY MARK ET AL: "Identification of a histamine H4 receptor on human eosinophils: Role in eosinophil chemotaxis." JOURNAL OF RECEPTORS AND SIGNAL TRANSDUCTION, vol. 22, no. 1-4, pages 431-448, XP009013673 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1545596A2 (en) * | 2002-09-06 | 2005-06-29 | Janssen Pharmaceutica N.V. | Use of histamine h4 receptor modulators for the treatment of allergy and asthma |
EP1545596A4 (en) * | 2002-09-06 | 2005-12-28 | Janssen Pharmaceutica Nv | Use of histamine h4 receptor modulators for the treatment of allergy and asthma |
US9138431B2 (en) | 2013-08-06 | 2015-09-22 | Bridge Pharma, Inc. | Methods of treatment of histamine H-4 receptor-related pruritus |
US9333199B2 (en) | 2013-08-06 | 2016-05-10 | Bridge Pharma, Inc. | Methods of treatment of histamine H-4 receptor-related pruritus associated with nerve disorders |
US9345697B2 (en) | 2013-08-06 | 2016-05-24 | Bridge Pharma, Inc. | Methods of treatment of non-histaminic pruritus |
US9439895B2 (en) | 2013-08-06 | 2016-09-13 | Bridge Pharma, Inc. | Methods of treating pruritic conditions mediated through non-histaminergic mechanisms in diabetic patients |
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