WO2015005365A1 - 非アルコール性脂肪性肝疾患治療剤 - Google Patents
非アルコール性脂肪性肝疾患治療剤 Download PDFInfo
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- WO2015005365A1 WO2015005365A1 PCT/JP2014/068253 JP2014068253W WO2015005365A1 WO 2015005365 A1 WO2015005365 A1 WO 2015005365A1 JP 2014068253 W JP2014068253 W JP 2014068253W WO 2015005365 A1 WO2015005365 A1 WO 2015005365A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/42—Oxazoles
- A61K31/423—Oxazoles condensed with carbocyclic rings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
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- 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
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- the present invention relates to a preventive and / or therapeutic agent for non-alcoholic fatty liver disease.
- Metabolic syndrome (visceral fat syndrome) has attracted attention as a concept of so-called lifestyle-related diseases such as type 2 diabetes.
- Metabolic syndrome is defined as a condition that includes at least two of hyperglycemia, hypertension, and lipid abnormalities in addition to visceral fat obesity, and promotes arteriosclerosis, increasing the risk of developing myocardial infarction, cerebral infarction, etc. It is supposed to be.
- Nonalcoholic fatty liver disease is a fatty liver disorder that does not depend on alcohol consumption or obvious causes (virus, autoimmunity, etc.). Although it is recognized as a phenotype in the liver of the syndrome, various other etiologies that impair fat metabolism and mitochondrial metabolism have been reported. NAFLD is a non-alcoholic fat that can range from simple fatty steatosis with a relatively good prognosis due to hepatocyte fat deposition alone to relatively severe liver tissue fibrosis, cirrhosis, and hepatocellular carcinoma. Symptoms up to sexual hepatitis (nonalcoholic steatohepatitis, hereinafter sometimes referred to as NASH) are included (Non-patent Document 1).
- Non-patent Document 2 As a generation mechanism of NASH, “two ⁇ hit theory” by Day et al. Is widely known (Non-patent Document 2).
- the fatty liver formation process (1st hit) involves imbalance in caloric intake / consumption balance and lipid retention in hepatocytes due to metabolic abnormalities based on insulin resistance.
- 2nd hit an increase in oxidative stress based on energy metabolic load and accompanying activation of the innate immune system play an important role.
- Kupffer (CD68 positive) cells which are immunocompetent cells in the liver, are resident macrophages in the liver and increase in NASH patients (Non-patent Document 3).
- Non-patent Document 4 Furthermore, it has been reported that macrophages are increased in the liver of NASH model mice (Non-patent Document 4). Experimental removal of Kupffer cells has also been reported to suppress hepatic fat accumulation induced by high-fat diet loading, suggesting that Kupffer cells play an important role in the development of NASH. (Non-Patent Document 5).
- NASH Treatment of NASH is based on lifestyle improvement based on diet and exercise therapy for lifestyle-related diseases such as obesity, diabetes, dyslipidemia, and hypertension.
- lifestyle-related diseases such as obesity, diabetes, dyslipidemia, and hypertension.
- drug treatment targeting insulin resistance, oxidative stress, lipid metabolism abnormality, hypertension, etc. which is considered to be an important factor in the progress of NASH, has been performed. Yes.
- thiazolidine derivatives such as pioglitazone and rosiglitazone
- a biguanide drug such as metformin
- vitamin E is used as a therapeutic agent alone or in combination with vitamin C.
- fibrates such as PPAR ⁇ agonists (fenofibrate, bezafibrate, etc.), statin preparations, probucol, etc., and as antihypertensive agents, angiotensin II type 1 receptor antagonist (ARB).
- ARB angiotensin II type 1 receptor antagonist
- Patent Document 1 includes the following formula (1):
- R 1 and R 2 are the same or different and each represents a hydrogen atom, a methyl group or an ethyl group
- R 3a , R 3b , R 4a and R 4b are the same or different and represent a hydrogen atom, a halogen atom, a nitro group, Hydroxyl group, C 1-4 alkyl group, trifluoromethyl group, C 1-4 alkoxy group, C 1-4 alkylcarbonyloxy group, di-C 1-4 alkylamino group, C 1-4 alkylsulfonyloxy group, C 1-4 alkylsulfonyl group, C 1-4 alkylsulfinyl group, or a C 1-4 or indicates an alkylthio group, R 3a and R 3b, or R 4a and R 4b are combined to show the alkylenedioxy group;
- X is oxygen atom, a sulfur atom or N-R 5 (R 5 is a hydrogen atom, C 1-4 alkyl,
- Y is indicating the number of oxygen atoms, S (O) l group (l 0-2), carbonyl group, carbonylamino group, aminocarbonyl group, sulfonylamino group, amino sulfonyl group, or Z represents CH or N; n represents a number from 1 to 6; m represents a number from 2 to 6)
- a compound represented by the above, a salt thereof, or a solvate thereof has a selective PPAR ⁇ activation action, and is not accompanied by weight gain or obesity in mammals including humans, hyperlipidemia, arteriosclerosis It is disclosed that it is useful as a preventive and / or therapeutic agent for diabetes, diabetes, diabetic complications (such as diabetic nephropathy), inflammation, heart disease and the like. However, there is no description or suggestion of how these compounds act on NAFLD, particularly NASH with severe symptoms.
- An object of the present invention is to provide a novel preventive and therapeutic agent for nonalcoholic fatty liver disease useful for the prevention and treatment of NAFLD, particularly NASH.
- NASH nonalcoholic fatty liver disease
- MCD methionine-choline deficient diet-loaded KK-A y mouse
- the present invention relates to (R) -2- [3-[[N- (benzoxazol-2-yl) -N-3- (4-methoxyphenoxy) propyl] aminomethyl] phenoxy] butyric acid (hereinafter referred to as compound A) or a salt thereof or a solvate thereof as an active ingredient provides a preventive and / or therapeutic agent for nonalcoholic fatty liver disease.
- the present invention relates to the following (1) to (18).
- a preventive and / or therapeutic agent for non-alcoholic fatty liver disease comprising a solvate as an active ingredient.
- An agent for suppressing or reducing fat deposition in the liver comprising the compound A or a salt thereof or a solvate thereof as an active ingredient.
- An inhibitor or reducer of Kupffer cells in the liver comprising the compound A or a salt thereof or a solvate thereof as an active ingredient.
- a method for preventing and / or treating nonalcoholic fatty liver disease comprising administering an effective amount of the compound A or a salt thereof or a solvate thereof to a patient in need.
- the method according to (7), wherein the non-alcoholic fatty liver disease is non-alcoholic steatohepatitis.
- Inhibiting fat deposition in the liver characterized by administering an effective amount of the compound A or a salt thereof or a solvate thereof to a patient in need of suppression or reduction of fat deposition in the liver Or how to decrease.
- a Kupffer cell in the liver characterized by administering an effective amount of the compound A, or a salt thereof, or a solvate thereof to a patient who needs to suppress or decrease the increase in Kupffer cell in the liver How to suppress or reduce.
- the compound A or a salt thereof, or a solvate thereof for use in a pharmaceutical composition used for preventing and / or treating nonalcoholic fatty liver disease (16) The compound A or a salt thereof or a solvate thereof for use in a pharmaceutical composition used for preventing and / or treating nonalcoholic steatohepatitis.
- the compound A or a salt thereof or a solvate thereof for use in a pharmaceutical composition used for suppressing and / or reducing Kupffer cells in the liver
- the present invention provides a novel preventive / therapeutic agent for nonalcoholic fatty liver disease (NAFLD), particularly severe nonalcoholic steatohepatitis (NASH).
- NAFLD nonalcoholic fatty liver disease
- NASH severe nonalcoholic steatohepatitis
- the present invention provides a preventive / therapeutic agent for highly severe NASH, which can suppress liver fat deposition and balloon-like swelling of hepatocytes, and can further reduce Kupffer cells in the liver. is there.
- FIG. 1 is a graph showing balloon-like enlargement of hepatocytes when Compound A (0.5 mg / kg) or fenofibrate (100 mg / kg) of the present invention is administered.
- FIG. 2 is a graph showing the CD68 positive cell area ratio (CD68 positive area liver) in the liver when Compound A (0.5 mg / kg) or fenofibrate (100 mg / kg) of the present invention is administered.
- FIG. 3 is a graph showing the fatty liver score (Steatosis score) when Compound A (0.25 mg / kg) or Bezafibrate (60 mg / kg) of the present invention is administered.
- (R) -2- [3-[[N- (Benzoxazol-2-yl) -N-3- (4-methoxyphenoxy) propyl] aminomethyl] phenoxy] butyric acid (compound A) used in the present invention is for example, it can be produced according to the method described in WO2005 / 023777 pamphlet or the like. Moreover, it can also formulate according to the method as described in literature.
- salts and solvates can be produced by conventional methods.
- the salt of compound A is not particularly limited as long as it is pharmaceutically acceptable; for example, alkali metal salts such as sodium salt and potassium salt; alkaline earth metal salts such as calcium salt and magnesium salt; ammonium salt Organic base salts such as trialkylamine salts; mineral acid salts such as hydrochlorides and sulfates; organic acid salts such as acetates.
- alkali metal salts such as sodium salt and potassium salt
- alkaline earth metal salts such as calcium salt and magnesium salt
- ammonium salt Organic base salts such as trialkylamine salts
- mineral acid salts such as hydrochlorides and sulfates
- organic acid salts such as acetates.
- solvate of Compound A or a salt thereof examples include hydrates, alcohol solvates (for example, ethanol solvates) and the like.
- Non-Patent Document 3 In NASH, it is known that CD68 positive Kupffer cells, which are macrophages in the liver, increase (see Non-Patent Document 3). As shown in Examples below, Compound A significantly increased hepatocyte balloon-like swelling and Kupffer cells in a high-fat, high-cholesterol diet (Western diet) -loaded LDL receptor knockout mouse, which is a model animal for NASH. In addition, in the MCD diet-loaded KK-A y mice, which are NASH model animals, a significant decrease in liver fat deposition was shown. Therefore, the compound A of the present invention, or a salt thereof, or a solvate thereof can prevent and / or treat nonalcoholic fatty liver disease of mammals including humans, particularly nonalcoholic steatohepatitis with high severity. Useful as an agent.
- the preventive and / or therapeutic agent of the present invention comprises a pharmaceutical composition comprising an active ingredient for prevention and a pharmaceutically acceptable carrier, an active ingredient for treatment and a pharmaceutically acceptable carrier. And a pharmaceutical composition comprising an active ingredient for prevention and treatment and a pharmaceutically acceptable carrier.
- the liver fat deposition inhibitor of the present invention is a pharmaceutical composition comprising an active ingredient for suppressing an increase in fat deposition in the liver and a pharmaceutically acceptable carrier, and reduces liver fat deposition.
- a pharmaceutical composition comprising a pharmaceutically acceptable carrier, and an active ingredient and a pharmaceutically acceptable carrier for inhibiting and reducing an increase in fat deposition in the liver. The pharmaceutical composition is included.
- the Kupffer cell-reducing agent in the liver of the present invention comprises a pharmaceutical composition comprising an active ingredient for suppressing an increase in Kupffer cells in the liver and a pharmaceutically acceptable carrier, and Kupffer cells increased in the liver.
- PHARMACEUTICAL COMPOSITION COMPRISING ACTIVE INGREDIENT FOR REDUCING AND PHARMACEUTICALLY ACCEPTABLE CARRIER, AND ACTIVE INGREDIENT AND Pharmacological A pharmaceutical composition comprising an acceptable carrier is included.
- the prophylactic and / or therapeutic agent of the present invention and the pharmaceutical composition of the present invention comprise the compound represented by Compound A, or a salt thereof, or a solvate thereof as an active ingredient.
- the component is useful as a preventive and / or therapeutic agent for non-alcoholic fatty liver disease of mammals including humans, particularly non-alcoholic steatohepatitis of high severity, as shown in the Examples described later.
- the active ingredient of the present invention is also useful as a fat deposition inhibitor in the liver of mammals including humans and a Kupffer cell reducing agent in the liver.
- Compound A of the present invention or a salt thereof, or a solvate thereof alone or in combination with other pharmaceutically acceptable carriers, is used for tablets, capsules, granules, powders, lotions, ointments, injections. Or a dosage form such as a suppository. These preparations can be produced by known methods.
- a solubilizing agent such as gum tragacanth, gum arabic, sucrose fatty acid ester, lecithin, olive oil, soybean oil, PEG 400; excipients such as starch, mannitol, lactose; sodium carboxymethylcellulose; Manufactured by appropriately combining a binder such as hydroxypropylcellulose; a disintegrant such as crystalline cellulose and carboxymethylcellulose calcium; a lubricant such as talc and magnesium stearate, and a fluidity improver such as light anhydrous silicic acid. can do.
- a binder such as hydroxypropylcellulose
- a disintegrant such as crystalline cellulose and carboxymethylcellulose calcium
- a lubricant such as talc and magnesium stearate
- a fluidity improver such as light anhydrous silicic acid.
- the compound A of the present invention, or a salt thereof, or a solvate thereof is administered by oral administration or parenteral administration.
- the dose of the medicament of the present invention varies depending on the patient's body weight, age, sex, symptoms, etc., but in the case of an adult, it is generally 0.01 to 1000 mg, preferably 0.1 to 100 mg as Compound A per day. It is preferable to administer divided doses.
- Example 1 Action in LDL receptor knockout mouse NASH model In Western diet-loaded LDL receptor knockout mouse (Non-patent Document 4), which is known to develop inflammation of fatty liver and liver, which is a characteristic pathology of NASH The effect was examined. In this test, (R) -2- [3-[[N- (benzoxazol-2-yl) -N-3- (4- Methoxyphenoxy) propyl] aminomethyl] phenoxy] butyric acid (Compound A) was used.
- mice Male LDL receptor knockout mice (B6.129S7-Ldlr ⁇ tm1Her> / J, Jackson Laboratories) were used in the experiments. From about 8 weeks of age, 13 weeks after around 8 weeks of age, Teklad Custom Research Diet (Harlan Teklad, TD.88137) was freely ingested as a Western diet, and NASH was developed. 2) Group composition: The mice were loaded with Western diet, and blood collection and body weight measurement were performed one week later.
- the group was divided into a control group (0.5% methylcellulose aqueous solution), a compound A 0.5 mg / kg administration group, and a fenofibrate 100 mg / kg administration group so that there was no difference in plasma lipids and body weight among the groups.
- Drug administration The administration volume was 5 mL / kg body weight, 0.5% methylcellulose aqueous solution was orally administered to the control group, and each drug solution was orally administered to the compound A administration group and fenofibrate administration group once a day. The administration period was 12 weeks.
- Example 2 Effect on NASH model using methionine / choline-deficient diet-loaded KK-A y mice
- MCD diet methionine / choline-deficient diet
- the control group received an MCD diet containing no drug
- the compound A administration group received an MCD diet containing 0.00026% of compound A
- the bezafibrate administration group received an MCD diet containing 0.06% bezafibrate.
- the administration period was 16 weeks.
- fatty liver score (Steatosis score) was evaluated under blind conditions.
- the degree of fat deposition (Grade) was observed at a magnification of 100 times, and the fatty liver was scored from 0 to 3 according to the following criteria according to the degree. Less than 5%: 0 5% to less than 33%: 1 33% or more and less than 66%: 2 66% or more: 3
- Example 1 and Example 2 reveal that Compound A of the present invention is extremely useful as a prophylactic / therapeutic agent for nonalcoholic steatohepatitis (NASH).
- NASH nonalcoholic steatohepatitis
- NASH nonalcoholic steatohepatitis
- the present invention relates to a balloon-like tumor of hepatocytes in nonalcoholic steatohepatitis (NASH), in which compound A, or a salt thereof, or a solvate thereof is a severe pathology of nonalcoholic steatohepatitis (NAFLD).
- NASH nonalcoholic steatohepatitis
- the present invention is the first to find that it has a large suppression, Kupffer cell positive area reduction, fat deposition suppression action, and provides a low molecular non-alcoholic fatty liver disease prevention and / or treatment agent . Since the present invention can be used as a drug substance, it is useful in the pharmaceutical industry and has industrial applicability.
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Abstract
Description
(1)(R)-2-[3-[[N-(ベンズオキサゾール-2-イル)-N-3-(4-メトキシフェノキシ)プロピル]アミノメチル]フェノキシ]酪酸、若しくはその塩又はこれらの溶媒和物を有効成分とする非アルコール性脂肪性肝疾患の予防及び/又は治療剤。
(2)非アルコール性脂肪性肝疾患が、非アルコール性脂肪性肝炎である、前記(1)に記載の予防及び/又は治療剤。
(3)非アルコール性脂肪性肝疾患の予防及び/又は治療が、肝臓中の脂肪沈着を抑制するものである、前記(1)又は(2)に記載の予防及び/又は治療剤。
(4)非アルコール性脂肪性肝疾患の予防及び/又は治療が、肝臓中のKupffer細胞を減少させるものである、前記(1)又は(2)に記載の予防及び/又は治療剤。
(8)非アルコール性脂肪性肝疾患が、非アルコール性脂肪性肝炎である、前記(7)に記載の方法。
(9)肝臓中の脂肪沈着の抑制又は減少が必要な患者に、前記化合物A、若しくはその塩又はこれらの溶媒和物の有効量を投与することを特徴とする、肝臓中の脂肪沈着を抑制又は減少する方法。
(10)肝臓中のKupffer細胞の増加抑制又は減少が必要な患者に、前記化合物A、若しくはその塩又はこれらの溶媒和物の有効量を投与することを特徴とする、肝臓中のKupffer細胞を抑制又は減少させる方法。
(12)非アルコール性脂肪性肝疾患が、非アルコール性脂肪性肝炎である、前記(11)に記載の使用。
(13)肝臓中の脂肪沈着を抑制又は減少させるための医薬組成物を製造するための、前記化合物A、若しくはその塩又はこれらの溶媒和物の使用。
(14)肝臓中のKupffer細胞を抑制又は減少させるための医薬組成物を製造するための、前記化合物A、若しくはその塩又はこれらの溶媒和物の使用。
(16)非アルコール性脂肪性肝炎を予防及び/又は治療するために使用される医薬組成物に使用するための、前記化合物A、若しくはその塩又はこれらの溶媒和物。
(17)肝臓中の脂肪沈着を抑制及び/又は減少させるために使用される医薬組成物に使用するための、前記化合物A、若しくはその塩又はこれらの溶媒和物。
(18)肝臓中のKupffer細胞を抑制及び/又は減少させるために使用される医薬組成物に使用するための、前記化合物A、若しくはその塩又はこれらの溶媒和物。
本発明の肝臓中の脂肪沈着抑制剤は、肝臓中の脂肪の沈着の増加を抑制させるための有効成分及び製薬上許容される担体を含有してなる医薬組成物、肝臓中の脂肪沈着を減少させるための有効成分及び製薬上許容される担体を含有してなる医薬組成物、並びに肝臓中の脂肪の沈着の増加を抑制及び減少させるための有効成分及び製薬上許容される担体を含有してなる医薬組成物を包含している。
本発明の肝臓中のKupffer細胞減少剤は、肝臓中のKupffer細胞の増加を抑制させるための有効成分及び製薬上許容される担体を含有してなる医薬組成物、肝臓中で増加したKupffer細胞を減少させるための有効成分及び製薬上許容される担体を含有してなる医薬組成物、並びに肝臓中のKupffer細胞の増加の抑制及び肝臓中で増加したKupffer細胞を減少させるための有効成分及び製薬上許容される担体を含有してなる医薬組成物を包含している。
本発明の予防及び/又は治療剤、及び本発明の医薬組成物は、化合物Aで表される化合物、若しくはその塩、又はこれらの溶媒和物を有効成分とするものであり、本発明の有効成分は、後記する実施例に示すとおり、ヒトを含む哺乳類の非アルコール性脂肪性肝疾患、特に重症度の高い非アルコール性脂肪性肝炎の予防及び/又は治療剤として有用である。また、後記する実施例に示すとおり、本発明の有効成分は、ヒトを含む哺乳類の肝臓中の脂肪沈着抑制剤、肝臓中のKupffer細胞減少剤としても有用である。
NASHの特徴的病態である脂肪肝と肝の炎症を発症することが知られている、Western diet負荷LDL受容体ノックアウトマウス(非特許文献4)における作用を検討した。
なお、本試験には、前記特許文献1に実施例85として開示されている、(R)-2-[3-[[N-(ベンズオキサゾール-2-イル)-N-3-(4-メトキシフェノキシ)プロピル]アミノメチル]フェノキシ]酪酸(化合物A)を使用した。
雄性LDL受容体ノックアウトマウス(B6.129S7-Ldlr<tm1Her>/J、Jackson Laboratories)を実験に用いた。8週齢前後より13週間、Western dietとしてTeklad Custom Research Diet(Harlan Teklad社、TD.88137)を自由摂取させ、NASHを発症させた。
2)群構成:
マウスにWestern dietを負荷し、1週間後に採血及び体重測定を実施した。群間で血漿中脂質及び体重に差がない様に、コントロール群(0.5%メチルセルロース水溶液)、化合物A 0.5mg/kg投与群、及びフェノフィブラート100mg/kg投与群に群分けした。
3)薬物投与:
投与容量は5mL/kg体重とし、コントロール群には0.5%メチルセルロース水溶液を、化合物A投与群、フェノフィブラート投与群にはそれぞれの薬液を、1日1回経口投与した。投与期間は12週間とした。
投与終了後、ペントバルビタールナトリウム(50mg/kg)麻酔下に肝臓を摘出し、パラホルムアルデヒドで固定後、ヘマトキシリン-エオジン染色標本及びCD68に対する免疫染色標本を作製した。ヘマトキシリン-エオジン染色標本を用いて、肝細胞の風船様腫大をブラインド条件下に、以下の基準(Kleiner et al. Hepatology 41, 1313-21, 2005)でスコア化した。
風船様腫大細胞なし :0
風船様腫大細胞が僅か(Few balloon cells) :1
風船様腫大細胞が多い又は顕著(Ballooning) :2
ブラインド条件下に肝臓におけるCD68陽性細胞面積率(CD68 positive area in liver)を画像解析システム(WinROOF)により測定した。
統計処理はStat Preclinica ((株)タクミインフォメーションテクノロジー)(Ver.1.1)を使用して行った。Dunnett’s test(N=14-15)により、コントロール群に対して、p<0.05で有意差があった場合に*印を、p<0.001で有意差があった場合に***印を付した。
図1に示すように、化合物Aの0.5mg/kg投与群において、肝細胞の風船様腫大の有意な抑制が認められた。フェノフィブラートの100mg/kg投与群においては、風船様腫大を抑制する傾向は認められたが統計学的には有意ではなかった。また、図2に示すように、化合物Aの0.5mg/kg投与群において、肝臓におけるCD68陽性細胞面積率が著明に低下していた(低下率81%)。フェノフィブラートの100mg/kg投与群においても肝臓におけるCD68陽性細胞面積率の低下が認められたが、低下率は73%であり、化合物A投与群の効果に及ばなかった。これらの結果から、化合物AはNASHの病態である、肝細胞の風船様腫大及びKupffer細胞の陽性面積を、PPARαアゴニストであるフェノフィブラートよりも強力に抑制することが明らかとなった。
メチオニン・コリン欠乏食(MCD食)を実験動物に負荷することにより、NASHの特徴的病態である脂肪肝を発症することが知られている、MCD食負荷KK-Ayマウス(Nakano S.et al., Hepatol Res.,38(10),1026-39,2008)における効果を検討した。なお、本試験には、実施例1と同様に前記特許文献1に実施例85として開示されている、(R)-2-[3-[[N-(ベンズオキサゾール-2-イル)-N-3-(4-メトキシフェノキシ)プロピル]アミノメチル]フェノキシ]酪酸(化合物A)を使用した。
雄性KK-Ayマウス(KK-Ay/TaJcl、日本クレア(株))を実験に用いた。12週齢前後より16週間MCD食を自由摂取させ、NASHを発症させた。
2)群構成:
群間で体重に差がない様に、正常食群、コントロール群(MCD食負荷)、化合物A 0.25mg/kg投与群、及びベザフィブラート60mg/kg投与群に群分けした。
3)薬物投与:
混餌投与により行った。コントロール群には薬物を含まないMCD食を、化合物A投与群には化合物Aを0.00026%含むMCD食を、ベザフィブラート投与群にはベザフィブラートを0.06%含むMCD食を自由摂取させた。投与期間は16週間とした。
投与終了後、ペントバルビタールナトリウム(50mg/kg)麻酔下に肝臓を摘出し、パラホルムアルデヒドで固定後、ヘマトキシリン-エオジン染色標本を作製した。ブラインド条件下に、脂肪肝スコア(Steatosis score)を評価した。脂肪沈着の程度(Grade)は拡大率100倍で観察し、その程度に応じて以下の基準で脂肪肝を0から3にスコア化した。
5%未満 :0
5%以上~33%未満 :1
33%以上66%未満 :2
66%以上 :3
統計処理はStat Preclinica ((株)タクミインフォメーションテクノロジー)(Ver.1.1)を使用して行った。Dunnett’s test(N=4-9)により、コントロール群に対して、p<0.05で有意差があった場合に*印を、p<0.001で有意差があった場合に***印を付した。
図3に示すように、化合物Aの0.25mg/kg投与群において、脂肪肝スコアが全例で0、すなわち脂肪沈着がほぼ完全に消失した。ベザフィブラートの60mg/kg投与群においては、正常食群と同程度に脂肪沈着を抑制したが、化合物Aのようにほぼ完全に脂肪沈着が消失するまでには至らなかった。これらのことより、化合物AはNASHの病態のひとつである脂肪沈着を、PPARαアゴニストであるベザフィブラートよりも強力に抑制することが明らかとなった。
Claims (4)
- (R)-2-[3-[[N-(ベンズオキサゾール-2-イル)-N-3-(4-メトキシフェノキシ)プロピル]アミノメチル]フェノキシ]酪酸、若しくはその塩又はこれらの溶媒和物を有効成分とする非アルコール性脂肪性肝疾患の予防及び/又は治療剤。
- (R)-2-[3-[[N-(ベンズオキサゾール-2-イル)-N-3-(4-メトキシフェノキシ)プロピル]アミノメチル]フェノキシ]酪酸、若しくはその塩又はこれらの溶媒和物を有効成分とする非アルコール性脂肪性肝炎の予防及び/又は治療剤。
- (R)-2-[3-[[N-(ベンズオキサゾール-2-イル)-N-3-(4-メトキシフェノキシ)プロピル]アミノメチル]フェノキシ]酪酸、若しくはその塩又はこれらの溶媒和物を有効成分とする肝臓中の脂肪沈着抑制剤。
- (R)-2-[3-[[N-(ベンズオキサゾール-2-イル)-N-3-(4-メトキシフェノキシ)プロピル]アミノメチル]フェノキシ]酪酸、若しくはその塩又はこれらの溶媒和物を有効成分とする肝臓中のKupffer細胞減少剤。
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AU2014288272B2 (en) | 2019-09-19 |
JP6391572B2 (ja) | 2018-09-19 |
EP3020401A1 (en) | 2016-05-18 |
IL243481B (en) | 2020-01-30 |
TWI696462B (zh) | 2020-06-21 |
TW201536283A (zh) | 2015-10-01 |
MX2016000307A (es) | 2016-05-05 |
HK1218078A1 (zh) | 2017-02-03 |
CN105307652A (zh) | 2016-02-03 |
NZ716421A (en) | 2020-02-28 |
EP3020401B1 (en) | 2019-11-13 |
CA2917489A1 (en) | 2015-01-15 |
PT3020401T (pt) | 2020-02-21 |
CA2917489C (en) | 2021-05-04 |
AU2014288272A1 (en) | 2016-01-21 |
PL3020401T3 (pl) | 2020-05-18 |
KR20160030479A (ko) | 2016-03-18 |
ES2772754T3 (es) | 2020-07-08 |
US20160136138A1 (en) | 2016-05-19 |
EA201690199A1 (ru) | 2018-01-31 |
CN114848637A (zh) | 2022-08-05 |
KR102034703B1 (ko) | 2019-10-21 |
EP3020401A4 (en) | 2017-02-15 |
IL243481A0 (en) | 2016-02-29 |
JPWO2015005365A1 (ja) | 2017-03-02 |
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