KR102304573B1 - Pharmaceutical Composition comprising c-Met kinase inhibitor as active ingredient for preventing or treating toxoplasma gondii infection - Google Patents

Abstract

The present invention relates to a pharmaceutical composition for preventing or treating Toxoplasmosis infection comprising a c-Met kinase inhibitor as an active ingredient. And it is expected to be widely used in the veterinary field.

Description

TECHNICAL FIELD [0001] Pharmaceutical Composition comprising c-Met kinase inhibitor as active ingredient for preventing or treating toxoplasma gondii infection

The present invention relates to a pharmaceutical composition for preventing or treating Toxoplasmosis infection comprising a c-Met kinase inhibitor as an active ingredient.

Toxoplasma gondii is a protozoan parasite that infects the central nervous system of warm-blooded animals including humans. About one-third of the world's population is infected, and in Korea, the infection rate is 2-25% depending on the group. The route of infection is when drinking water contaminated with oocyst from cat feces, which is the definitive host, or when ingested by burying it in raw vegetables, ) can be ingested. Most infections are asymptomatic and pass without symptoms, but as the infection progresses, it exists as an opportunistic infection in the central nervous system, especially brain tissue.

In particular, when a mother is infected with Toxoplasmosis, it causes miscarriage or stillbirth in the early stages of pregnancy, and even when infected later in pregnancy, a Toxoplasma baby is born, which shows symptoms of Toxoplasmosis after normal delivery. Even in healthy people, eating undercooked livestock or wild meat can cause lymphadenitis or retinal choroiditis, and when the host's immune system fails in various situations, meningitis or retinal choroiditis occurs due to reactivation of cyst in the brain.

Treatment is performed when symptoms appear, and currently used treatments include single administration of spiramycin or pyrimethamine, or pyrimethamine and sulfa drugs developed as preventive drugs for malaria. ) is treated for 2-3 weeks with co-administration, and it is particularly effective when co-administered. However, when co-administered, Stevens-Johnson syndrome, which is the main symptom of epidermis and spot peeling, may appear as a side effect, so the development of a safer therapeutic agent is urgently needed.

Meanwhile, it is not known whether c-Met inhibitors altiratinib, golvatinib, foretinib, and/or cabozantinib are effective in the treatment of Toxoplasmosis infection.

Korean Patent No. 10-1540739

Accordingly, the present inventors confirmed that c-Met kinase inhibitors altiratinib, golvatinib, foretinib, and/or caboxantinib have excellent Toxoplasmosis growth inhibitory effects, and thus have a high therapeutic effect on Toxoplasmosis infection. was completed.

Accordingly, it is an object of the present invention to provide a composition for preventing, improving or treating Toxoplasmosis infection, comprising a c-Met kinase inhibitor or a pharmaceutically acceptable salt thereof as an active ingredient.

However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object of the present invention, the present invention provides a pharmaceutical composition for preventing or treating Toxoplasmosis infection, comprising a c-Met kinase inhibitor or a pharmaceutically acceptable salt thereof as an active ingredient.

In addition, the present invention provides a veterinary composition for preventing or treating Toxoplasmosis infection, comprising a c-Met kinase inhibitor or a veterinary acceptable salt thereof as an active ingredient.

In addition, the present invention provides an adjuvant for preventing or treating Toxoplasmosis infection, comprising a c-Met kinase inhibitor or a veterinary acceptable salt thereof as an active ingredient.

In an embodiment of the present invention, the c-Met kinase inhibitor may be at least one selected from the group consisting of altiratinib, golvatinib, foretinib, and cabozantinib. However, the present invention is not limited thereto.

In another embodiment of the present invention, the Toxoplasmosis infection may be an infection caused by Toxoplasma gondii, but is not limited thereto.

In another embodiment of the present invention, the Toxoplasmosis infection may be one or more selected from the group consisting of lymphadenitis, meningitis, encephalomyelitis, hepatitis, myositis, myocarditis, pneumonia, tubular disease, retinitis, choroiditis, and retinal choroiditis. , but is not limited thereto.

In another embodiment of the present invention, the c-Met kinase inhibitor or a pharmaceutically acceptable salt thereof may be included in an amount of 0.01 to 50% by weight based on the total weight of the composition, but is not limited thereto.

In another embodiment of the present invention, it may further include a pharmaceutically acceptable carrier, excipient or diluent, but is not limited thereto.

In addition, the present invention provides a method for treating Toxoplasmosis infection, comprising administering to a subject a composition comprising a c-Met kinase inhibitor or a pharmaceutically acceptable salt thereof as an active ingredient.

In addition, the present invention provides the use of a composition comprising a c-Met kinase inhibitor or a pharmaceutically acceptable salt thereof as an active ingredient to prevent or treat Toxoplasmosis infection.

In addition, the present invention provides a use of a c-Met kinase inhibitor for producing a medicament used for Toxoplasmosis infection.

The therapeutic agent for Toxoplasmosis infection according to the present invention is expected to be widely used in pharmaceutical and veterinary fields because it has an excellent growth inhibitory effect on Toxoplasmosis.

1 is a comparison of the Toxoplasma gondii growth inhibitory effect of pyrimethamine, an untreated control group, and a negative control group, sunitinib, which is a positive control agent.
Figure 2 shows the inhibitory effect of Toxoplasmosis growth inhibition of c-Met kinase inhibitors altiratinib, golvatinib, foretinib, and caboxantinib.

The present invention relates to a composition for preventing, ameliorating or treating Toxoplasmosis infection, comprising a c-Met kinase inhibitor or a pharmaceutically acceptable salt thereof as an active ingredient, the composition comprising a pharmaceutical composition, a food composition or a veterinary composition can be

Hereinafter, the present invention will be described in detail.

In the present invention, "altiratinib (altiratinib)" can be purchased commercially, and the chemical name is '1-N'-[4-[2-(cyclopropanecarbonylamino)pyridin-4-yl]oxy-2, 5-difluorophenyl]-1-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide', and refers to a compound having the following formula (1). In the present specification, altiratinib is used to mean altiratinib and its racemates, enantiomers, isomers, hydrates, and solvates.

[Formula 1]

In the present invention, “foretinib” can be purchased commercially, and the chemical name is '1-N'-[3-fluoro-4-[6-methoxy-7-(3-morpholin-4)] -ylpropoxy)quinolin-4-yl]oxyphenyl]-1-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide', and refers to a compound having the following formula (2). In the present specification, the term foretinib is used to include all of foretinib and its racemates, enantiomers, isomers, hydrates, and solvates.

[Formula 2]

In the present invention, "cabozantinib" can be purchased commercially, and the chemical name is '1-N-[4-(6,7-dimethoxyquinolin-4-yl)oxyphenyl]-1-N It is '-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide', and refers to a compound having the following formula (3). In the present specification, the term caboxantinib is used to include all of caboxantinib and its racemates, enantiomers, isomers, hydrates, and solvates.

[Formula 3]

In the present invention, “golvatinib” can be purchased commercially, and the chemical name is '1-N'-[2-fluoro-4-[2-[[4-(4-methylpiperazin-1)] -yl)piperidine-1-carbonyl]amino]pyridin-4-yl]oxyphenyl]-1-N-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide', and refers to a compound having the following formula (4). In the present specification, the term gorvatinib is used to include all of gorvatinib and its racemates, enantiomers, polymorphs, hydrates, and solvates.

[Formula 4]

The present invention may also include a pharmaceutically acceptable salt of a c-Met kinase inhibitor as an active ingredient. As used herein, the term "pharmaceutically acceptable salt" includes salts derived from pharmaceutically acceptable inorganic acids, organic acids, or bases. As used herein, the term “food pharmaceutically acceptable salt” includes salts derived from pharmaceutically acceptable organic acids, inorganic acids, or bases. As used herein, the term "veterinary acceptable salt" includes salts derived from veterinary acceptable inorganic acids, organic acids, or bases.

Examples of suitable acids include hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, perchloric acid, fumaric acid, maleic acid, phosphoric acid, glycolic acid, lactic acid, salicylic acid, succinic acid, toluene-p-sulfonic acid, tartaric acid, acetic acid, citric acid, methanesulfonic acid, formic acid , benzoic acid, malonic acid, naphthalene-2-sulfonic acid, benzenesulfonic acid, and the like. Acid addition salts can be prepared by conventional methods, for example, by dissolving a compound in an aqueous solution of an excess of acid, and precipitating the salt using a water-miscible organic solvent such as methanol, ethanol, acetone or acetonitrile. It can also be prepared by heating an equimolar amount of the compound and an acid or alcohol in water and then evaporating the mixture to dryness, or by suction filtration of the precipitated salt.

Salts derived from suitable bases may include, but are not limited to, alkali metals such as sodium and potassium, alkaline earth metals such as magnesium, and ammonium. The alkali metal or alkaline earth metal salt can be obtained, for example, by dissolving the compound in an excess alkali metal hydroxide or alkaline earth metal hydroxide solution, filtering the undissolved compound salt, and then evaporating and drying the filtrate. In this case, it is pharmaceutically suitable to prepare a sodium, potassium or calcium salt as the metal salt, and the corresponding silver salt can be obtained by reacting an alkali metal or alkaline earth metal salt with a suitable silver salt (eg, silver nitrate).

The content of the c-Met kinase inhibitor in the composition of the present invention can be appropriately adjusted depending on the symptoms of the disease, the degree of progression of the symptoms, the condition of the patient, etc., for example, 0.0001 to 99.9% by weight, 0.001 to 80 based on the total weight of the composition. It may be weight % or 0.01 to 50 weight %, but is not limited thereto. The content ratio is a value based on the dry amount from which the solvent is removed.

In the present invention, "Toxoplasma gondii infection" is a disease caused by infection of Toxoplasma gondii, a type of protozoa, for example, Toxoplasma gondii. A type of zoonotic infectious disease that can cause abnormalities. Toxoplasmosis infection can also be described as "toxoplasmosis". In the present invention, Toxoplasmosis infection includes all diseases and symptoms that can be caused by Toxoplasmosis infection.

Toxoplasmosis can be parasitized in various parts of the body, for example, lymph glands, brain, lung, myocardium, spleen, bone marrow, kidney, adrenal gland, and nervous system. It can divide and proliferate, resulting in tissue necrosis. In addition, it can cause various diseases and symptoms depending on the site of infection, for example, lymphadenitis, retinal choroiditis, meningitis, encephalomyelitis, hepatitis, myositis, myocarditis, pneumonia, tubular disease, and the like.

In addition, in the present invention, toxoplasma infection may be an infectious disease appearing in the retina or choroid, and may be exemplified by retinitis, choroiditis, and retinal choroiditis. Because the retina is in contact with the choroid, when the retina is inflamed, changes occur in the choroid, and conversely, changes in the retina may occur due to inflammation of the choroid. Therefore, retinitis and choroiditis often appear together, and this is called retinal choroiditis or chorioretinitis.

When Toxoplasma gondii enters the human body, it creates pockets in the brain, eyes, and liver, and then reactivates when the immune system is weakened. have.

In one embodiment of the present invention, by treating retinal epithelial cells with c-Met kinase inhibitors to suppress the proliferation of Toxoplasmosis, the inhibitors of the present invention are comparable to the existing Toxoplasmosis treatment, pyrimethamine. It was confirmed that the effect was shown (see FIG. 2).

The pharmaceutical composition according to the present invention may further include suitable carriers, excipients and diluents commonly used in the preparation of pharmaceutical compositions. The excipient may be, for example, at least one selected from the group consisting of a diluent, a binder, a disintegrant, a lubricant, an adsorbent, a humectant, a film-coating material, and a controlled-release additive.

The pharmaceutical composition according to the present invention can be prepared according to a conventional method according to a conventional method, such as powders, granules, sustained-release granules, enteric granules, liquids, eye drops, elsilic, emulsions, suspensions, alcohols, troches, fragrances, and limonaade. , tablets, sustained release tablets, enteric tablets, sublingual tablets, hard capsules, soft capsules, sustained release capsules, enteric capsules, pills, tinctures, soft extracts, dry extracts, fluid extracts, injections, capsules, perfusates, Warnings, lotions, pastas, sprays, inhalants, patches, sterile injection solutions, or external preparations such as aerosols can be formulated and used, and the external preparations are, for example, creams, gels, patches, sprays, ointments, etc. , a warning agent, a lotion, a liniment agent, a pasta agent, or a cataplasma agent.

Carriers, excipients and diluents that may be included in the pharmaceutical composition according to the present invention include lactose, dextrose, sucrose, oligosaccharide, sorbitol, mannitol, xylitol, erythritol, maltitol, starch, acacia gum, alginate, gelatin, calcium phosphate, calcium silicate, cellulose, methyl cellulose, microcrystalline cellulose, polyvinyl pyrrolidone, water, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate and mineral oil.

In the case of formulation, it is prepared using diluents or excipients, such as commonly used fillers, extenders, binders, wetting agents, disintegrants, and surfactants.

Corn starch, potato starch, wheat starch, lactose, sucrose, glucose, fructose, di-mannitol, precipitated calcium carbonate, synthetic aluminum silicate, phosphoric acid as additives for tablets, powders, granules, capsules, pills, and troches according to the present invention Calcium monohydrogen, calcium sulfate, sodium chloride, sodium hydrogen carbonate, purified lanolin, microcrystalline cellulose, dextrin, sodium alginate, methyl cellulose, sodium carboxymethyl cellulose, kaolin, urea, colloidal silica gel, hydroxypropyl starch, hydroxypropyl methyl excipients such as cellulose, 1928, 2208, 2906, 2910, propylene glycol, casein, calcium lactate, and Primogel; Gelatin, gum arabic, ethanol, agar powder, cellulose acetate phthalate, carboxymethylcellulose, calcium carboxymethylcellulose, glucose, purified water, sodium caseinate, glycerin, stearic acid, sodium carboxymethylcellulose, sodium methylcellulose, methylcellulose, microcrystalline cellulose, dextrin , hydroxycellulose, hydroxypropyl starch, hydroxymethylcellulose, purified shellac, starch powder, hydroxypropylcellulose, hydroxypropylmethylcellulose, polyvinyl alcohol, polyvinylpyrrolidone, etc. can be used. Hydroxypropyl methylcellulose, corn starch, agar powder, methylcellulose, bentonite, hydroxypropyl starch, sodium carboxymethylcellulose, sodium alginate, calcium carboxymethylcellulose, calcium citrate, sodium lauryl sulfate, silicic anhydride, 1-hydroxy Propyl cellulose, dextran, ion exchange resin, polyvinyl acetate, formaldehyde treated casein and gelatin, alginic acid, amylose, guar gum, sodium bicarbonate, polyvinylpyrrolidone, calcium phosphate, gelled starch, gum arabic, disintegrants such as amylopectin, pectin, sodium polyphosphate, ethyl cellulose, sucrose, magnesium aluminum silicate, di-sorbitol solution, light anhydrous silicic acid; Calcium stearate, magnesium stearate, stearic acid, hydrogenated vegetable oil, talc, lycopodite, kaolin, petrolatum, sodium stearate, cacao butter, sodium salicylate, magnesium salicylate, polyethylene glycol 4000, polyethylene glycol 6000, liquid paraffin, hydrogenated soybean oil (Lubri wax), aluminum stearate, zinc stearate, sodium lauryl sulfate, magnesium oxide, macrogol, synthetic aluminum silicate, silicic anhydride, higher fatty acids, higher alcohols, silicone oil, paraffin oil, polyethylene glycol fatty acid ether, starch, A lubricant such as sodium chloride, sodium acetate, sodium oleate, dl-leucine, light silicic anhydride; may be used.

The liquid additives according to the present invention include water, dilute hydrochloric acid, dilute sulfuric acid, sodium citrate, monostearate sucrose, polyoxyethylene sorbitol fatty acid esters (Twinester), polyoxyethylene monoalkyl ethers, lanolin ethers, Lanolin esters, acetic acid, hydrochloric acid, aqueous ammonia, ammonium carbonate, potassium hydroxide, sodium hydroxide, prolamine, polyvinylpyrrolidone, ethyl cellulose, sodium carboxymethyl cellulose, and the like can be used.

In the syrup according to the present invention, a sucrose solution, other sugars or sweeteners may be used, and if necessary, a fragrance, colorant, preservative, stabilizer, suspending agent, emulsifying agent, thickening agent, etc. may be used.

Purified water may be used in the emulsion according to the present invention, and if necessary, an emulsifier, preservative, stabilizer, fragrance, etc. may be used.

Suspending agents such as acacia, tragacantha, methylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, microcrystalline cellulose, sodium alginate, hydroxypropylmethylcellulose, 1828, 2906, and 2910 may be used in the suspending agent according to the present invention, If necessary, surfactants, preservatives, stabilizers, colorants, and fragrances may be used.

Injectables according to the present invention include distilled water for injection, 0.9% sodium chloride injection, ring gel injection, dextrose injection, dextrose + sodium chloride injection, PEG (PEG), lactated ring gel injection, ethanol, propylene glycol, non-volatile oil-sesame oil , solvents such as cottonseed oil, peanut oil, soybean oil, corn oil, ethyl oleate, isopropyl myristate, and benzene benzoate; Solubilizing aids such as sodium benzoate, sodium salicylate, sodium acetate, urea, urethane, monoethylacetamide, butazolidine, propylene glycol, tweens, nijeongtinamide, hexamine, and dimethylacetamide; Weak acids and their salts (acetic acid and sodium acetate), weak bases and their salts (ammonia and ammonium acetate), organic compounds, proteins, buffers such as albumin, peptone, gum; isotonic agents such as sodium chloride; sodium bisulfite (NaHSO ₃ ) carbon dioxide gas, sodium metabisulfite (Na ₂ S ₂ O ₃ ), sodium sulfite (Na ₂ SO ₃ ), nitrogen gas (N ₂ ), stabilizers such as ethylenediaminetetraacetic acid; sulphating agents such as sodium bisulfide 0.1%, sodium formaldehyde sulfoxylate, thiourea, disodium ethylenediaminetetraacetate, acetone sodium bisulfite; analgesic agents such as benzyl alcohol, chlorobutanol, procaine hydrochloride, glucose, and calcium gluconate; suspending agents such as SiMC sodium, sodium alginate, Tween 80, and aluminum monostearate.

The suppository according to the present invention includes cacao fat, lanolin, Witepsol, polyethylene glycol, glycerogelatin, methyl cellulose, carboxymethyl cellulose, a mixture of stearic acid and oleic acid, Subanal, cottonseed oil, peanut oil, palm oil, cacao butter + Cholesterol, Lecithin, Lanet Wax, Glycerol Monostearate, Tween or Span, Imhausen, Monolene (Propylene Glycol Monostearate), Glycerin, Adeps Solidus, Butyrum Tego -G), Cebes Pharma 16, Hexalide Base 95, Cotomar, Hydroxote SP, S-70-XXA, S-70-XX75 (S-70-XX95), Hydro Hydrokote 25, Hydrokote 711, Idropostal, Massa estrarium, A, AS, B, C, D, E, I, T, Massa-MF, Masupol, Masupol-15, Neosupostal-N, Paramound-B, Suposiro (OSI, OSIX, A, B, C, D, H, L), Suppository IV type (AB, B, A, BC, BBG, E, BGF, C, D, 299), supostal (N, Es), Wecobi (W, R, S, M, Fs), tester triglyceride base (TG-95, MA, 57) and The same mechanism may be used.

Solid preparations for oral administration include tablets, pills, powders, granules, capsules, etc., and such solid preparations include at least one excipient in the extract, for example, starch, calcium carbonate, sucrose ) or lactose, gelatin, etc. In addition to simple excipients, lubricants such as magnesium stearate talc are also used.

Liquid formulations for oral administration include suspensions, internal solutions, emulsions, syrups, etc. In addition to water and liquid paraffin, which are commonly used simple diluents, various excipients such as wetting agents, sweeteners, fragrances, and preservatives may be included. have. Formulations for parenteral administration include sterile aqueous solutions, non-aqueous solutions, suspensions, emulsions, freeze-dried preparations, and suppositories. Non-aqueous solvents and suspending agents include propylene glycol, polyethylene glycol, vegetable oils such as olive oil, and injectable esters such as ethyl oleate.

The pharmaceutical composition according to the present invention is administered in a pharmaceutically effective amount. In the present invention, "pharmaceutically effective amount" means an amount sufficient to treat a disease with a reasonable benefit/risk ratio applicable to medical treatment, and the effective dose level is determined by the type, severity, drug activity, and type of the patient's disease; Sensitivity to the drug, administration time, administration route and excretion rate, treatment period, factors including concurrent drugs and other factors well known in the medical field may be determined. The dosage of the composition of the present invention is preferably 0.1 mg/kg to 100 mg/kg per day based on the active ingredient, but is not limited thereto. Administration may be administered once a day, or may be administered in several divided doses.

The pharmaceutical composition according to the present invention may be administered as an individual therapeutic agent or may be administered in combination with other therapeutic agents, may be administered sequentially or simultaneously with conventional therapeutic agents, and may be administered single or multiple. In consideration of all of the above factors, it is important to administer an amount that can obtain the maximum effect with a minimum amount without side effects, which can be easily determined by a person skilled in the art to which the present invention pertains.

The pharmaceutical composition of the present invention may be administered to an individual by various routes. All modes of administration can be envisaged, for example, oral administration, subcutaneous injection, intraperitoneal administration, intravenous injection, intramuscular injection, paraspinal (intrathecal) injection, sublingual administration, buccal administration, rectal insertion, vaginal It can be administered according to internal insertion, ocular administration, ear administration, nasal administration, inhalation, spraying through the mouth or nose, skin administration, transdermal administration, and the like.

The pharmaceutical composition of the present invention is determined according to the type of drug as an active ingredient along with several related factors such as the disease to be treated, the route of administration, the patient's age, sex, weight, and the severity of the disease.

In the present invention, "individual" means a subject in need of treatment for a disease, and more specifically, human or non-human primates, mice, rats, dogs, cats, horses, cattle, etc. means the mammals of

In the present invention, "administration" means providing a predetermined composition of the present invention to an individual by any suitable method.

In the present invention, “prevention” means any action that suppresses or delays the onset of a target disease, and “treatment” means that the target disease and metabolic abnormalities are improved or It means all actions that are beneficially changed, and “improvement” means all actions that reduce the parameters related to the desired disease, for example, the degree of symptoms by administration of the composition according to the present invention.

When the c-Met kinase inhibitor of the present invention is used as a food additive, the c-Met kinase inhibitor may be added as it is or used together with other foods or food ingredients, and may be appropriately used according to a conventional method. The mixed amount of the active ingredient may be appropriately determined according to the purpose of use (prevention, health or therapeutic treatment). In general, in the production of food or beverage, the c-Met kinase inhibitor of the present invention is added in an amount of 15% by weight or less, or 10% by weight or less based on the raw material. However, in the case of long-term intake for health and hygiene or health control, the amount may be less than the above range, and since there is no problem in terms of safety, the active ingredient may be used in an amount above the above range.

The veterinary composition of the present invention may further include appropriate excipients and diluents according to conventional methods. The excipients and diluents include lactose, dextrose, sucrose, sorbitol, mannitol, xylitol, erythritol, maltitol, starch, gum acacia, alginate, gelatin, calcium phosphate, calcium silicate, cellulose, methyl cellulose, microcrystalline cellulose, Polyvinyl pyrrolidone, water, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate, cetanol, stearyl alcohol, liquid paraffin, sorbitan monostearate, polysorbate 60, methylparaben, propylparaben and mineral oil, but are not limited thereto. In addition, the veterinary composition according to the present invention may further include a filler, an anti-agglomeration agent, a lubricant, a wetting agent, a spice, an emulsifier, a preservative, and the like.

The veterinary composition according to the present invention may be formulated using methods well known in the art to provide rapid, sustained or delayed release of an active ingredient after administration to an animal, and the formulation may be a powder, granule, tablet, It may be in the form of capsules, suspensions, emulsions, solutions, syrups, aerosols, soft or hard gelatin capsules, suppositories, sterile injection solutions, sterile external preparations, and the like, but is not limited thereto.

The dosage of the veterinary composition according to the present invention may vary depending on the age, sex, and weight of the animal, but an amount of 0.0001 to 100 mg/kg may be administered once to several times a day, and the route of administration, the degree of disease , may be increased or decreased according to gender, weight, age, etc. Accordingly, the above dosage does not limit the scope of the present invention in any way.

Hereinafter, preferred examples are presented to help the understanding of the present invention. However, the following examples are only provided for easier understanding of the present invention, and the contents of the present invention are not limited by the following examples.

Example 1. Toxoplasmosis growth inhibitory effect of c-Met inhibitor

As host cells, ARPE-19 cells (ATCC, CRL 2302), which are epithelial cells of the human retina, were maintained in a 1:1 mixed medium of DMEM and F12 supplemented with 10% fetal bovine serum. RH strains (passage culture received from Veterinary Science and Quarantine Service) were used. Toxoplasmosis-infected host cells were treated with c-Met kinase inhibitor drugs (altiratinib, golvatinib, foretinib, caboxantinib, purchased from Biovision Co.) by concentration and reacted for 12 hours, followed by Toxoplasmosis. Indirect Immunofluorescence Antibody Assay (IFA) using GRA3 antibody and an antibody of programmed cell death protein 4 (PDCD4), and Western blot using beta-actin and GRA3 antibodies were performed to confirm proliferation inhibition and altered Toxoplasmosis. Sunitinib was used as a negative control, and pyrimethamine was treated as a positive control.

Anti-rabbit PDCD4 (Programmed cell death protein 4) antibody used in IFA was from Cell Signaling Co., FITC (Fluorescein isothiocyanate)-conjugated anti-mouse IgG and TRITC (Tetramethylrhodamine)-conjugated anti-rabbit IgG were It was purchased from Invitrogen Co. The IFA method was as follows: ARPE-19 cells cultured on a cover glass were infected with Toxoplasmosis, treated with drugs, and then reacted with anti-rabbit PDCD4 antibody and anti-GRA3 monoclonal antibody. Thereafter, each fluorescent antibody was treated and observed under a fluorescence microscope.

Anti-actin rabbit antibody and anti-rabbit HRP (horseradish peroxidase) used for Western blotting were purchased from Bethyl Co., and anti-mouse HRP was purchased from Vector Co. The Western blot method is as follows: ARPE-19 was infected with Toxoplasma gondii, treated with the drug, and reacted for 12 hours, followed by electrophoresis and blotting. After treatment with anti-GRA3 monoclonal antibody and anti-actin antibody, anti-rabbit HRP and anti-mouse HRP were treated to develop color with Cresscendo wester HRP substrate (Millipore Co.).

As a result, as shown in FIG. 1 , sunitinib used as a negative control did not show any effect on Toxoplasmosis proliferating in the protozoa-containing membrane generated in retinal cells.

On the other hand, as shown in FIG. 2 , altiratinib was effective at 0.1 μM or higher, foretinib at 2.5 μM or higher, caboxantinib at 5.0 μM or higher, and golvatinib at 5.0 μM or higher, as a positive control agent. It showed an inhibitory effect on mitosis and proliferation equivalent to 5.0 μM of pyrimethamine used.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (10)

A pharmaceutical composition for preventing or treating Toxoplasmosis infection, comprising altiratinib or a pharmaceutically acceptable salt thereof as an active ingredient.

delete According to claim 1,
The Toxoplasmosis infection is lymphadenitis, meningitis, encephalomyelitis, hepatitis, myositis, myocarditis, pneumonia, tubular disease, retinitis, choroiditis, and retinal choroiditis caused by Toxoplasmosis infection, characterized in that at least one selected from the group consisting of, pharmaceutical, enemy composition.
According to claim 1,
A pharmaceutical composition comprising 0.01 to 50% by weight of altiratinib or a pharmaceutically acceptable salt thereof based on the total weight of the composition.
A veterinary composition for preventing or treating Toxoplasmosis infection, comprising altiratinib or a veterinary acceptable salt thereof as an active ingredient.

delete 6. The method of claim 5,
The Toxoplasmosis infection is lymphadenitis, meningitis, encephalomyelitis, hepatitis, myositis, myocarditis, pneumonia, tubular disease, retinitis, choroiditis, and retinal choroiditis caused by Toxoplasmosis infection, characterized in that at least one selected from the group consisting of, medical composition.
Antigen adjuvant for preventing or treating Toxoplasmosis infection, comprising altiratinib or a veterinarily acceptable salt thereof as an active ingredient.

delete 9. The method of claim 8,
The Toxoplasmosis infection is an antigen, characterized in that at least one selected from the group consisting of lymphadenitis, meningitis, encephalomyelitis, hepatitis, myositis, myocarditis, pneumonia, tubular disease, retinitis, choroiditis, and retinal choroiditis caused by Toxoplasmosis infection. supplements.

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