JPH1036388A - Synthesis inhibitor containing ginsenoside of protein belonging to hsp 27 family - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject HSP47 synthesis inhibitor capable of suppressing collagen synthesis and treating diseases showing the condition of sthenia of extracellular matrix production, comprising a ginsenoside as an active ingredient. SOLUTION: Ginseng or koji is subjected to extraction treatment with water or an organic solvent and separated from impurities by filtration, centrifugal separation, etc., to give a crude extract, which is optionally purified by an adsorbent to give a ginsenoside (e.g. ginsenoside Rg1). Then, the ginsenoside is pharmaceutically manufactured alone or with an ordinary carrier to give the objective synthesis inhibitor which contains the ginsenoside as an active ingredient, has an inhibitory acton on synthesis of a heat shock protein (HSP47) having 47 kilodalton molecular weight, suppresses collagen synthesis in organs and is useful for treating diseases such as cirrhosis, interstitial lung disease, chronic renal insufficiency, hypertrophy of heart, postoperative cicatrice, burn cicatrice, keloid, scleroderma, arteriosclerosis, arthrorheumatism, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is, ginsenosides, especially containing ginsenoside Rg ₁ as an active ingredient, heat shock protein having a molecular weight of 47 kilodaltons (kD) for the synthesis inhibitors (hereinafter referred to as HSP47). The HSP47 synthesis inhibitor of the present invention particularly inhibits the synthesis of collagen in organs, thereby increasing cirrhosis, interstitial lung disease, chronic renal failure (or a disease that causes chronic renal failure), cardiac hypertrophy, Keloids and hypertrophic scars, scleroderma, arteriosclerosis,
Or effectively improve the physiological condition of a patient with a disease exhibiting a pathological condition of increased extracellular matrix (extracellular matrix) production, such as rheumatoid arthritis, resulting in cirrhosis, interstitial lung disease, chronic renal failure (or chronic renal failure). Diseases that cause hypercellular matrix production such as cardiac hypertrophy, postoperative scar or burn scar, keloid or hypertrophic scar after traffic accident, scleroderma, arteriosclerosis, or rheumatoid arthritis Can be treated effectively.

[0002]

2. Description of the Related Art In recent years, diseases showing a pathological condition of enhanced production of extracellular matrix such as collagen have become a serious problem. The diseases that indicate the pathological condition of increased extracellular matrix production include, for example, cirrhosis, interstitial lung disease, chronic renal failure (or a disease that results in chronic renal failure), cardiac hypertrophy, postoperative scar and burn. Includes scars, keloids and hypertrophic scars that occur after traffic accidents, etc., scleroderma, arteriosclerosis, or rheumatoid arthritis.

For example, in Japan alone, about 2
Cirrhosis, which is said to be common to all, is a general term for diseases in which the liver becomes stiff due to the growth of connective tissue, and is said to be the end picture of various chronic liver diseases. is there. In other words, in chronic hepatitis in which liver injury such as inflammation lasts for a long time, the liver fibrosis is accompanied by markedly enhanced production of extracellular matrix (particularly type I collagen) such as fibroblasts and Ito cells. As liver fibrosis progresses chronically, more and more normal liver regeneration is disturbed and replaced by hepatocytes, and extracellular matrix composed mainly of fibroblasts and type I collagen occupies a significant part of liver tissue,
It leads to cirrhosis consisting of many colobules. With the progression of cirrhosis, the fibrous septum spreads throughout the liver, and the resulting abnormal blood flow also contributes to further degeneration of hepatic parenchymal cells, leading to continued vicious circulation in cirrhosis and alcohol. , Viruses, autoimmunity, etc.
A large amount of collagen fibers are produced in the liver, resulting in necrosis and loss of function of hepatocytes, and patients with cirrhosis eventually die. Type I collagen accounts for about 2% of the total protein in normal liver, but accounts for 10 to 30% in cirrhosis.

In addition, interstitial lung disease is caused by chronic inflammation (alveolitis) of the lower respiratory tract (alveolitis) which often involves not only the alveoli and the alveolar duct but also the respiratory bronchiole and terminal bronchus, and the resulting interstitial disease. A group of diseases characterized by fibrosis and intraalveolar fibrosis. The interstitial lung disease referred to here includes, for example, interstitial pneumonia, diffuse interstitial lung disease such as pulmonary fibrosis, idiopathic pulmonary fibrosis, permeable pulmonary edema, collagen disease lung, sarcoidosis, etc. . In interstitial lung disease, excessive production and accumulation of extracellular matrix has been observed in fibrotic tissues. That is, in pulmonary fibrotic tissue of interstitial lung disease, marked accumulation of type I and type III collagen is observed in the enlarged interstitium. Accumulate in the alveolar septum, the stage progresses,
Type collagen increases and becomes the main collagen. The basement membrane is destroyed at an early stage, and the invasion of collagen fibers into the alveolar cavity side is observed.

[0005] Chronic renal failure is a condition in which homeostasis in the body cannot be maintained due to deteriorating renal function as a result of chronic nephritis syndrome. A pathological view of the progress of chronic renal failure is glomerular sclerosis and progression of interstitial fibrosis. Glomerulosclerosis is an increase in extracellular matrix centered on the mesangial region. Compared to normal, the component of mesangial sclerosis markedly increased the component of glomerular basement membrane such as type IV collagen, and the type I collagen, which is a stromal component, grew in line with the site of sclerosis . In other words, increased glomerular sclerosis which is chronically progressed is caused by enhanced production of extracellular matrix. Here, the disease falling into chronic renal failure includes, for example, IgA nephropathy, focal glomerulosclerosis, membranous proliferative nephritis, diabetic nephropathy, chronic interstitial nephritis, chronic glomerulonephritis and the like.

[0006] Cardiomyocytes are highly differentiated cells.
Does not have the ability to divide and proliferate. Therefore, when a certain load is applied to the heart, each of the myocardial cells enlarges to increase the contractile force and try to maintain the heart function. Furthermore, if the load lasts for a long time, various obstacles are accumulated, mainly due to the cause of ischemia, and the compensation mechanism for the load breaks down, the contractile force of the myocardium rapidly decreases, and the heart's pump function is impaired. It is known that heart failure occurs, and cardiac hypertrophy is the largest cause of heart failure in Japan. In addition, the formation of cardiac hypertrophy is not only the largest risk factor for the development of heart failure, but also significantly increases the complication rate of ischemic heart disease and severe ventricular arrhythmia, and is a factor that independently determines the prognosis of life. Has become. When cardiac hypertrophy progresses, not only individual cardiomyocytes are remarkably enlarged, but also because the cardiomyocytes are tightly bundled, fibrosis of the interstitium is promoted and collagen which is an extracellular matrix increases. In addition, when myocardial cells are lost due to myocarditis, myocardial ischemia, etc., collagen is biosynthesized to replace gaps. If the interstitial fibrosis progresses excessively, the result is a hardened myocardium,
Extensions fail. In addition, muscle function is impaired and diastolic relaxation of the heart muscle is impaired. Other diseases such as post-operative scars and burn scars, or scleroderma, arteriosclerosis, and other pathological conditions of increased extracellular matrix production may cause abnormal increase in collagen synthesis for some reason, leading to fibrosis and tissue It is believed that a change in cure is a major cause.

It has been pointed out that the basement membrane and collagen synthesis in the basement membrane also play an important role in angiogenesis (Maragoudakis, E., Sarmonika, M., and
Panoutsacopoulous, M., "J. Pharmacol. Exp. The
r. ", 244 : 729, 1988; Ingber, DE, Madri, J.
A., and Folkman, J., "Endocrinology", 119 : 1768,
1986). Examples of diseases caused by angiogenesis include diabetic retinopathy, posterior lens fibroplasia, angiogenesis associated with corneal transplantation, glaucoma, eye tumor, trachoma, stem gland, suppurative granuloma, hemangiomas, fibrous blood vessels Tumors, hypertrophic scars, granulation, rheumatoid arthritis, edema sclerosis, atherosclerosis, various tumors and the like are known. Despite the serious problem of diseases that indicate the increased production of extracellular matrix such as collagen, the inhibition of extracellular matrix synthesis has been satisfactory in various aspects such as side effects and pharmacological effects. Agents (eg, collagen synthesis inhibitors) have not yet been developed.

On the other hand, heat shock proteins (heat shock proteins)
protein; also called HSP, stress protein)
A group of proteins expressed in cells by stimulating the cells with some stress, such as heat, heavy metals, drugs, amino acid analogs, or hypoxia (low oxygen concentration). Heat shock proteins are ubiquitous in nature and are produced by higher animals, including bacteria, yeast, plants, insects, and humans. HSPs vary in their types, but due to their large molecular weight, the HSP90 family (eg, 90 kD or 110 kD HSPs), HSP
SP70 family (eg, 70-73 kD HSP
), HSP60 family (for example, 57-68k
D HSP), the small HSP family (eg,
20 hD, 25-28 kD, or 47 kD HSP). In this specification, HSP having a specific molecular weight is referred to as HS
P and the number immediately following it,
For example, an HSP having a molecular weight of 47 kD is referred to as “HSP47”. As described above, there are many types of HSPs, which differ not only in molecular weight but also in structure, function, or property. In addition to the response to stress, some of these proteins are constitutively synthesized and, under normal circumstances, regulate protein folding, unfolding, protein subunit assembly, and protein membrane trafficking. It has been shown to play an essential physiological role. These functions as heat shock proteins are called molecular chaperones.

HSP47 is a protein discovered by Nagata et al. In 1986, and is a basic protein having a molecular weight of 47 kDa (pI = 9.0). HSP47
Increased collagen expression has been shown to increase collagen synthesis in various cells ("J. Biol. Che.
m. ", 261 : 7531, 1986;" Eur. J. Biochem. ", 206 :
323, 1992; "J. Biol. Chem.", 265 : 992, 1990;
"J. Clin. Invest.", 94 : 2481, 1994). That is, H
SP47 functions as a collagen-specific molecular chaperone in the aspect of intracellular processing of procollagen in the endoplasmic reticulum, formation of triple helix, or transport / secretion of procollagen from the endoplasmic reticulum to the Golgi apparatus. As such, increased HSP47 expression stimulates the accumulation of collagen molecules in the extracellular matrix. Thus, HSP47, a collagen-bound heat shock protein, is a heat shock protein closely related to collagen, which is an extracellular matrix protein, in terms of function as well as expression.

[0010]

SUMMARY OF THE INVENTION In view of the above circumstances, the present inventors have developed cirrhosis, interstitial lung disease, chronic renal failure (or a disease that results in chronic renal failure), cardiac hypertrophy, postoperative scar and Keloids and hypertrophic scars that occur after burn scars, traffic accidents, etc.
Effectively improve the physiological status of patients with scleroderma, arteriosclerosis, or disease states that show extracellular matrix production enhancement such as rheumatoid arthritis, and improve cirrhosis, interstitial lung disease, chronic renal failure (or chronic renal failure) Disease), cardiac hypertrophy, postoperative scar or burn scar, keloid or hypertrophic scar after traffic accident, scleroderma, arteriosclerosis, or enhanced extracellular matrix production such as rheumatoid arthritis. Various studies have been made in order to provide an extracellular matrix synthesis inhibitor capable of effectively treating the indicated disease.

As mentioned above, cirrhosis, interstitial lung disease,
Chronic renal failure (or a disease that leads to chronic renal failure), cardiac hypertrophy,
Fibrosis such as keloids and hypertrophic scars, scleroderma, arteriosclerosis, or rheumatoid arthritis that occur after postoperative scars or burn scars, traffic accidents, etc. are mainly pathological conditions in which extracellular matrix in organs is significantly increased. Is understood. Cirrhosis, interstitial lung disease, chronic renal failure (or a disease that leads to chronic renal failure), cardiac hypertrophy, postoperative scars and burn scars, keloids and hypertrophic scars that occur after traffic accidents, scleroderma, Arteriosclerosis,
Alternatively, fibrosis accompanying a disease showing a pathological condition of enhanced extracellular matrix production such as rheumatoid arthritis is considered to be caused by an increase in collagen biosynthesis or a decrease in collagen degradability. For example, in the fibrosis of the liver, the activation of the synthesis of type I, type III, and type IV collagen occurs. In particular, the activation of the synthesis of type I collagen, which is a main component, is important.

[0012] Under these circumstances, the present inventors have, surprisingly, ginsenoside is a component, such as a carrot or red ginseng, particularly ginsenoside Rg _1, specifically inhibit the synthesis of HSP47 in cells of tissue exhibiting pathology I found to do. That is, administration of ginsenosides suppresses the synthesis of HSP47 in cells, suppresses the synthesis of collagen in organs, and eventually causes cirrhosis, interstitial lung disease, chronic renal failure (or chronic renal failure). Disease), cardiac hypertrophy, postoperative scars and burn scars, keloids and hypertrophic scars after traffic accidents, scleroderma, arteriosclerosis,
Alternatively, it has been found that it is possible to treat a disease exhibiting a pathology of enhanced extracellular matrix production such as rheumatoid arthritis. The present invention is based on these findings, and is useful for the treatment of cirrhosis, interstitial lung disease, chronic renal failure (or a disease leading to chronic renal failure), cardiac hypertrophy, postoperative scar or burn scar, traffic accident, etc. An HSP47 synthesis inhibitor capable of effectively treating a disease showing a pathological condition of enhanced extracellular matrix production, such as a resulting keloid or hypertrophic scar, scleroderma, arteriosclerosis, or rheumatoid arthritis, An object of the present invention is to provide an inhibitor of synthesis of HSP47, a collagen-specific molecular chaperone that plays an important role in the process of maturation and transport of collagen.

[0013]

SUMMARY OF THE INVENTION Accordingly, the present invention is, ginsenosides, characterized by particularly containing ginsenoside Rg ₁ as an active ingredient, to HSP47 synthesis inhibitors.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The synthesis inhibitor of the present invention contains ginsenosides as an active ingredient. In the present specification, ginsenosides (ginsenosides; ginsenosides) are, for example, ginsenoside Ro (ginsenoside Ro;
ginsenoside Ro; Chixetsusaponin V;
chikusetsusaponin V; saponin A;
saponin A), ginsenoside Ra ₁ (ginsenosides Ra _1; ginsenoside Ra _1), ginsenoside Ra ₂ (ginsenosides Ra _2; ginse
noside Ra _2), ginsenoside Rb ₁ (ginsenosides Rb _1; ginsenoside Rb _1; saponin D; saponin D), ginsenoside Rb
₂ (ginsenoside Rb ₂ ; ginsenoside R
b ₂ ), ginsenoside Rb ₃ (ginsenoside Rb ₃ ;
ginsenoside Rb ₃ ), ginsenoside R
c (ginsenoside Rc; ginsenoside R
c), ginsenoside Rd (ginsenoside Rd; gin
ginsenoside Rd), ginsenoside Re (ginsenoside Re), ginsenoside Rf (ginsenoside Rf; ginsenos)
ideRf), ginsenoside Rg ₁ (ginsenoside R
g ₁ ; ginsenoside Rg ₁ ), ginsenoside Rg ₂ (ginsenoside Rg ₂ ; ginsenosi)
de Rg ₂ ; Chixetsusaponin I; chikuset
susaponinI), ginsenoside Rg ₃ (ginsenoside Rg _3; ginsenosideRg _3), ginsenoside Rh ₁ (ginsenosides Rh _1; ginse
nosin Rh ₁ ), ginsenoside Rh ₂ (ginsenoside Rh ₂ ; ginsenoside Rh ₂ ),
20-glucodinsenoside Rf (20-glucoginsenoside Rf; 20-glucoginsenoside Rf)
Rf), malonyl ginsenosides Side Rb ₁ (Maroni alginic Seno Cid Rb _1; maronylginsenosi
de Rb ₁ ), malonyl ginsenoside Rb ₂ (malonylginsenoside Rb ₂ ; maronylginsen)
oside Rb ₂ ), malonyl ginsenoside Rc
(Malonylginsenoside Rc; maronylgins
enosideRc), malonylzine senoside Rd
(Malonylginsenoside Rd; maronylgins
enoside Rd), Chixetsusaponin Ia (ch
ikusetsusaponin Ia), chikusetsusaponin Ib
b), Chixetsusaponin III (chikusetsus)
aponin III), Chixetusa saponin IV (chik)
usetsusaponin IV; saponin B; sapo
nin B), Chixetsusaponin IVa (chikuse)
tsusaponin IVa; saponin C; sapon
in C), protopanaxadiol (protopadiol)
taxidiol), protopanaxatriol (pr
otopanaxtriol), oleanolic acid (o
leanonic acid) or the stereoisomers of these compounds. In the present invention, these ginsenosides can be used alone or in combination with a plurality of different ginsenosides.

[0015] As ginsenosides which can be used as active ingredients in the synthesis inhibitor of the present invention, in particular, ginsenoside Rg ₁ being most preferred. Ginsenoside Rg ₁ (ginsenosides Rg _1; ginsenos
ide Rg ₁ ) is of the formula (I):

Embedded image (Wherein, Glc is a β-D-glucopyranosyl group)
And a molecular formula of C ₄₂ H ₇₂ O ₁₄ and a molecular weight of 801.03
And contained in crude drugs such as carrots and kojin.

The ginsenosides contained in the synthesis inhibitor of the present invention can be prepared by chemical synthesis or by extracting and purifying from natural products. Alternatively, a commercially available product may be used. When extracting ginsenosides used as an active ingredient in the synthesis inhibitor of the present invention from natural products, for example, whole or part of a plant containing ginsenosides (for example, whole plant, leaf, root,
The rhizome, stem, root bark, or flower) is used as it is, or is simply processed (for example, dried, cut, blanched, steam-heated, or powdered) (for example, a crude drug). The extraction conditions are not particularly limited as long as they are generally used for plant extraction. Examples of plants containing ginsenosides include, but are not limited to, ginseng, Panax ginseng CA Meyee of the family Araliaceae.
r; Panax schinseng Nees), Panax ginseng [Panaxjaponicus C. et al.
A. Meyer; Panax sinsengNe
es var. japonicum Makino; P
anax pseudo-ginseng (Wil
l. ) Subsp. japonicus Har
a], Panax notoginseng [Panax notogin
Seng (Burkill) F.S. H. Chen; Pa
nax sanchi Hoo; Panaxpseud
o-ginseng Wallich var. not
oginseng (Burkill) Hoo et
Tseng] or American carrot (Panax q
uinquefolium L. ) Etc. can be used.

When ginsenosides in the present invention are extracted from crude drugs, the extraction is not limited thereto, but, for example, it is preferable to extract ginsenosides from carrot or kojin. Carrot (Ginseng Radix) means a root excluding fine roots of Panax ginseng or a lightly blanched root thereof, and these portions can be used alone or in any combination. In addition, kojin (red ginseng; Red Ginseng; Ginseng)
Radix Rubra) means steamed panax ginseng roots, and these portions can be used alone or in any combination.

[0018] carrot extract or red ginseng extract can be used as an active ingredient in the synthesis inhibitor according to the present invention, ginsenosides above, it is sufficient that, especially containing ginsenoside Rg _1, therefore, the carrot or red ginseng crude The extract can be used. As a method for producing a carrot extract or a ginseng extract that can be used in the present invention, a carrot or a ginseng is extracted with water (for example, cold water, hot water, preferably hot water) or with an organic solvent. By doing so, it can be obtained. As the organic solvent, for example, having 1 to 1 carbon atoms
6, alcohols (eg, methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, or butyl alcohol), esters (eg, methyl acetate, ethyl acetate, propyl acetate, or butyl acetate), ketones (eg, acetone or methyl) Isobutyl ketone), ether, petroleum ether, n-
Hexane, cyclohexane, toluene, benzene, a halogen derivative of a hydrocarbon (eg, carbon tetrachloride, dichloromethane, or chloroform), pyridine, glycol (eg, propylene glycol or butylene glycol), polyethylene glycol, or acetonitrile can be used. These organic solvents can be used alone or in an appropriate combination, mixed at a certain ratio, and further used in an anhydrous or water-containing state. Preferably,
Methyl alcohol and the like are desirable. As a method of water extraction or organic solvent extraction, a method used for ordinary crude drug extraction can be used. For example, 3 to 300 parts by weight of water or an organic solvent is used for 1 part by weight of (dried) carrot or kojin. It is desirable to heat and reflux at a temperature lower than the boiling point while stirring, to perform ultrasonic extraction at room temperature, or to cool and soak. The extraction step is usually performed for 5 minutes to 7 days, preferably for 10 minutes.
The extraction time can be shortened by carrying out for a period of minutes to 24 hours and, if necessary, adding auxiliary means such as stirring.

After completion of the extraction step, a crude extract can be obtained by separating insolubles from the water or organic solvent extract by a suitable method such as filtration or centrifugation. Incidentally, in the synthesis inhibitors of the present invention, extracted from natural products, fractionated ginsenosides, especially in the case of using ginsenoside Rg _1, without particular purification the crude extract may be used as it is. In addition to the water extract or organic solvent extract by a conventional method, a purified extract obtained by further treating the above crude extract with various organic solvents or adsorbents is also used as an active ingredient of the synthesis inhibitor of the present invention. Can be. Carrot extract or ginseng extract containing these crude extracts and purified extracts after various purification treatments may be used as extracted, or may be an extract obtained by concentrating the solvent,
A powder dried by removing the solvent, or a powder purified by crystallization, or a viscous substance may be used, or a diluent thereof may be used. The carrot extract or ginseng extract thus obtained contains ginsenosides contained in the ginseng or ginseng as a mixture, and at the same time contains impurities derived from the carrot or ginseng as the raw material.

The synthetic inhibitor of the present invention comprises ginsenosides or an extract of a plant containing ginsenosides, for example, an extract of a crude drug containing ginsenosides (particularly, a carrot extract or a ginseng extract). It can be administered to animals, preferably mammals (especially humans), alone or preferably together with conventional pharmaceutically or veterinarily acceptable carriers. The administration dosage form is not particularly limited, for example, powders, fine granules,
Granules, tablets, capsules, suspensions, emulsions,
Examples include oral preparations such as syrups, extracts and pills, and parenteral preparations such as injections, external solutions, ointments, suppositories, creams for topical administration, and eye drops. These oral preparations include, for example, gelatin, sodium alginate, starch, corn starch, sucrose, lactose, glucose, mannitol, carboxymethylcellulose, dextrin, polyvinylpyrrolidone, crystalline cellulose, soy lecithin, sucrose, fatty acid esters, talc, stearic acid. Excipients such as magnesium, polyethylene glycol, magnesium silicate, anhydrous silicic acid, or synthetic aluminum silicate, binders, disintegrants, surfactants, lubricants, glidants, diluents, preservatives, coloring It can be produced according to a conventional method using an agent, a flavor, a flavoring agent, a stabilizer, a humectant, a preservative, an antioxidant, or the like. For example,
Capsules prepared by mixing and filling ₁ part by weight of ginsenoside Rg1 and 99 parts by weight of lactose.

Examples of parenteral administration methods include injection (subcutaneous, intravenous, etc.) and rectal administration. Of these, injections are most preferably used. For example, in the preparation of an injection, ginsenosides (particularly ginsenoside Rg ₁ ) as an active ingredient, or extracts of plants containing ginsenosides, for example, extracts of crude drugs containing ginsenosides (particularly carrots) Extract or kojin extract), in addition, for example, water-soluble solvents such as physiological saline or Ringer's solution, water-insoluble solvents such as vegetable oils or fatty acid esters, isotonic agents such as glucose or sodium chloride, solubilizing agents, A stabilizer, preservative, suspending agent, emulsifier, or the like can be optionally used. Further, the synthetic inhibitor of the present invention may be administered using a sustained-release preparation technique using a sustained-release polymer or the like. For example,
The synthetic inhibitors of the present invention can be incorporated into a pellet of ethylene vinyl acetate polymer and the pellet can be surgically implanted into the tissue to be treated.

The synthesis inhibitor of the present invention is not limited to this.
%, Preferably 0.1 to 80% by weight. In addition, extracts of plants containing ginsenosides, for example, extracts of crude drugs containing ginsenosides (particularly, carrot extracts or kojin extract)
Can be prepared by appropriately adjusting the amount of ginsenosides (particularly, ginsenoside Rg ₁ ) contained therein to the above-mentioned range. In addition, a plant extract containing ginsenosides, for example, a synthetic inhibitor containing an extract of a crude drug containing ginsenosides (particularly, a carrot extract or a ginseng extract) as an active ingredient, a formulation for oral administration. In such a case, it is preferable to formulate a preparation using a pharmaceutically acceptable carrier.

The dose of the synthetic inhibitor of the present invention depends on the type of disease, the age, sex, weight, degree of symptoms and the method of administration of the patient, and is not particularly limited, and the amount of ginsenoside Rg ₁ is not particularly limited. As usual 1 per adult
About 10 mg to 10 g is orally or parenterally administered in about 1 to 4 times a day. Furthermore, the use is not limited to pharmaceuticals, and various uses, for example, functional foods and health foods can be given in the form of food and drink.

[0024]

[Action] As described above, ginsenosides contained in synthesis inhibitors of the present invention, particularly ginsenoside Rg _1,
Since it has the action of specifically inhibiting the synthesis of HSP47 in cells, the administration of the ginsenosides leads to an increase in HSP47 in cells.
SP47 biosynthesis is specifically reduced, and collagen biosynthesis is suppressed. As a result, extracellular matrix production is also suppressed. Therefore, the ginsenosides are diseases showing pathological conditions of increased extracellular matrix production accompanied by an increase in collagen, such as cirrhosis, interstitial lung disease, chronic renal failure (or a disease falling into chronic renal failure), cardiac hypertrophy, surgery and the like. It can be used for the prevention and treatment of keloids and hypertrophic scars, scleroderma, arteriosclerosis, rheumatoid arthritis, etc. which occur after scars and burn scars, traffic accidents and the like. That is, the synthesis inhibitor of the present invention suppresses the synthesis of collagen by suppressing the synthesis of HSP47, which is a collagen-specific chaperone.

Further, as mentioned above, it has been pointed out that the basement membrane and collagen synthesis in the basement membrane play an important role also in angiogenesis. It is extremely useful as a prophylactic or therapeutic agent for many diseases based on proliferation, and as described above, such as diabetic retinopathy, posterior lens fibroplasia, angiogenesis associated with corneal transplantation, glaucoma, and ocular tumors. , Trachoma,
It can be used for psoriasis, suppurative granulomas, hemangiomas, fibrous hemangiomas, hypertrophic scars, granulation, rheumatoid arthritis, edema sclerosis, atherosclerosis and various tumors. Furthermore, it has been shown that interstitial stroma, whose basic skeleton is type I collagen and fibronectin, plays a guiding role in the metastasis of cancer until detached cancer cells invade nearby vessels. So ["B
IOTHERAPY ", 7 (8): 1181, 1993], and it is also possible to suppress cancer metastasis by administering the synthetic inhibitor of the present invention.

[0026]

EXAMPLES The present invention will be described below in more detail with reference to examples, but these examples do not limit the scope of the present invention. Example 1: Preparation of anti-HSP47 polyclonal antibody (1) Preparation of anti-HSP47 polyclonal antibody A peptide consisting of 15 amino acids corresponding to the amino acid sequence of the 2nd to 16th amino acids from the N-terminal of human HSP47 [hereinafter,
Human HSP47 peptide (2-16)] was prepared using an automatic peptide synthesizer (PSSM-8 system, Shimadzu Corporation), and succinimidyl 4- (p-maleimidophenyl) butyrate [SMPB: Succinimidyl 4
-(p-maleimidophenyl) butyrate) as a crosslinking agent,
It was bound to lactoglobulin by a conventional method ("Biochemistry", 18 : 690, 1979) to prepare a sensitizing antigen. Phosphate buffered saline containing 150 μg of this sensitizing antigen [Composition: KC
l = 0.2 g / l, KH ₂ PO ₄ = 0.2 g / l, Na
Cl = 8 g / l, Na ₂ HPO ₄ (anhydrous) = 1.15 g
/ L: hereinafter referred to as PBS (-): Cosmo Bio, Catalog No. 320-01] 0.2 ml and an equal volume of Freund's complete adjuvant (Jatron, Catalog No. RM606-1) are mixed, and the resulting mixture is obtained. 0.2 ml was subcutaneously administered to Lurat (6 weeks old, female: CLEA Japan) to immunize. After repeating the second and third immunizations in the same manner, immunization was performed six times using an adjuvant (Hunter's TiterMax; CytRx Corporation, Georgia, USA). Blood was collected from the sensitized animals, serum was separated and collected by a conventional method, and the antibody titer in the serum was measured by the enzyme antibody method (ELISA method) and the Western blot method described below.

(2) Evaluation of anti-HSP47 polyclonal antibody properties by enzyme-linked immunosorbent assay (ELISA) The human HSP47 peptide (2-1) prepared in (1) above
6) was dissolved in PBS (-) to prepare a peptide solution having a concentration of 10 µg / ml, and the peptide solution was dropped in 50 µl portions to each well of a rigid assay plate (Falcon, catalog number 3910). P on the outermost well
After only 50 μl of BS (−) was added and left overnight at 4 ° C. in a wet state, the peptide solution was discarded, and each well was washed with PBS (−), and then 1% bovine serum albumin (hereinafter, referred to as “PBS”). PBS (-) 100 containing BSA)
μl was placed in each well and left at room temperature for 1 hour. PB
After washing three times with S (-), 50 μl of the lurat serum obtained in the above (1) was added to each well, and left at room temperature for 1 hour. After washing three times with PBS (-), each well was used as a secondary antibody as a peroxidase-labeled anti-rat IgG5.
After adding 0 μl, the mixture was left at room temperature for 1 hour. PBS (-)
After washing twice with 0.1%, 4 μl of a hydrogen peroxide solution was added.
100 μl of a substrate solution prepared by dissolving one o-phenylenediamine (OPD) tablet (Sigma, catalog number P8287) (10 mg) in 10 ml of M citrate buffer (pH 4.5) was added dropwise to each well, and the mixture was cooled to room temperature. After being left for 30 minutes under light shielding, the absorbance at 492 nm of each well was measured using a microplate reader (Tosoh, MPR-A4).
i-type). The serum in which an increase in the antibody titer was confirmed was used as an anti-human HSP47 polyclonal antibody in the following Examples.

(3) Anti-HS by Western blotting
Evaluation of P47 polyclonal antibody properties Laemmli buffer system (Laemmli, NK, "Nat
ure ", 283 : pp. 249-256, 1970), lysates of HeLa cells were subjected to sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis according to the following method. 6.1 ml of distilled water, 2.5 ml of 0.5 M Tris (Bio-Rad, Cat. No. 161-0716) -HCl (pH 6.8),
10% SDS (Bio-Rad, Catalog No. 161-030
1) 100 μl and 30% acrylamide (Bio
Lad, Catalog No. 161-1001) / N, N'-methylenebisacrylamide (Bio-Rad, Catalog No. 16
1-0201) Mix 1.3 ml, degas for 15 minutes,
% Ammonium persulfate (Bio-Rad, catalog number
161-0700) 50 μl and N, N, N ′, N′-tetramethylethylenediamine (hereinafter abbreviated as TEMED)
(Bio-Rad, Catalog No. 161-0800) 10 μl was added to prepare a concentrated gel. Separation gels were prepared as follows. 4.045 ml of distilled water, 2.5 ml of 1.5 M Tris-HCl (pH 8.8), 10% SDS
100 μl and 3.3 ml of 30% acrylamide / N, N′-methylenebisacrylamide were slowly mixed, degassed with an aspirator for 15 minutes, and 50 μl of 10% ammonium persulfate and 5 μl of TEMED were added. As an electrophoresis buffer, 9.0 g of Tris, 43.2 g of glycine (Bio-Rad, catalog number 161-0717), and 3.0 g of SDS were mixed with distilled water to make 600 ml, and this was diluted 5-fold with distilled water. Using. The sample buffer was 2 ml of distilled water, 2M Tris-HCl (pH
6.8) 500 μl, SDS 0.32 g, β-mercaptoethanol 800 μl, and 0.05% (w / v) bromophenol blue (Bio-Rad, catalog number
161-0404) A mixture of 400 μl was used.

Under the condition of 5% carbon dioxide, at 37 ° C., 10
HeLa cells were cultured in a MEM medium containing% inactivated fetal bovine serum (hereinafter abbreviated as FBS) to prepare a lysate. SD of the obtained HeLa cell lysate
After performing S-polyacrylamide gel electrophoresis, 0.1%
45 μm nitrocellulose membrane (Schleicher & Schuell,
Attach the gel to the catalog number 401196) and use a protein transfer device (Trans-Blot Electrophoretic Transfer Cell:
(Bio-Rad) at room temperature at 100 V for 3 hours. As a blotting buffer, a Tris Gly Running and Blotting Buffer (Enprot) comprising 0.025 M Tris and 0.192 M glycine and adjusted to pH 8.5 was used.
ech, Massachusetts, USA, catalog number SA100034)
A buffer prepared by adding methyl alcohol to a concentration of 20% was used. After blotting, the nitrocellulose membrane was immersed in a PBS (-) solution containing 5% skim milk (Snow Brand Milk Products) at room temperature for 30 minutes to perform blocking. After blocking, a primary antibody reaction was carried out using a Lurat serum obtained in the above section (1) as a primary antibody using a screener blotter (SAMPLATEC). The primary antibody reaction is PB containing 2% skim milk (Snow Brand Milk Products)
The Rulat serum 200 diluted 10-fold with S (-)
Performed in μl at room temperature for 120 minutes. After the completion of the primary antibody reaction, use a slow rocking shaker to remove PBS.
Shaking twice (-) for 5 minutes was performed using 0.1% Tween20.
PB containing (Bio-Rad, Catalog No. 170-6531)
Shake four times with S (-) solution for 15 minutes, then add PBS
The nitrocellulose membrane was washed by shaking twice for 5 minutes at (-). After washing is completed, a peroxidase-labeled goat anti-rat IgG antibody (Southern Biotechnolog)
y, Catalog No. 3030-05) was subjected to a secondary antibody reaction for 2 hours using 5 ml of a 5000-fold diluted solution of PBS (-) containing 2% skim milk. After the reaction,
BS (-) solution and P containing 0.1% Tween20
The nitrocellulose membrane was washed with the BS (-) solution under the same conditions as those after the primary antibody reaction.

After removing the excess PBS (-) solution, a western blotting detection reagent (ECL Western blotti
ng detection reagent; Amersham, catalog number RP
N2106) was sprinkled on the nitrocellulose membrane, allowed to stand at room temperature for 1 minute, excess detection reagent was removed, the nitrocellulose membrane was wrapped in a wrap, and the reaction surface was coated with an X-ray film (Kodak X-OMAT, AR, (Catalog No. 165 1454). After development, a molecular weight of 47 corresponding to HSP47
The reactivity of the anti-HSP47 polyclonal antibody was examined by measuring the band around the kilodalton. The serum in which the antibody titer was confirmed to increase was used as an anti-human HSP4
7 polyclonal antibodies were used in the following examples.

Example 2: HSP expression level in cultured human cancer cells
Measurement (1) of human cultured cancer cells cultured human breast cancer cell lines MCF7 (ATCC HTB 22)
With 10 ⁻⁸ Mβ-estradiol and 10% inactivated F
The cells were cultured in an RPMI1640 medium containing BS at 37 ° C. under the conditions of 5% carbon dioxide except for the time of the heat shock treatment.

(2) Ginsenoside Rg ₁ treatment and heat shock treatment Two days after seeding, the medium of the human breast cancer cell line MCF7 was
Ginsenoside Rg ₁ (Matsuura Pharmaceutical Co., Ltd.) represented by the above formula (I) was added to a final concentration of 100 μM and cultured for 24 hours. Thereafter, the cells were subjected to a heat shock treatment at 45 ° C. for 15 minutes, and then cultured at 37 ° C. overnight. The control test is
Except that no addition of ginsenoside Rg ₁ was carried out as described above.

(3) Measurement of HSP expression level in cultured human cancer cells Each cell treated in the above (2) was homogenized by the following method, and the HSP expression level was measured by Western blotting. That is, after the cells treated in the above item (2) are washed with PBS (−), the lysis buffer (ly
sis buffer) [1.0% NP-40, 0.1
5M sodium chloride, 50mM Tris-HCl (pH
8.0) 5 mM EDTA, 2 mM N-ethylmaleimide, 2 mM phenylmethylsulfonyl fluoride,
2 μg / ml leupeptin and 2 μg / ml pepstatin] were added and left on ice for 20 minutes. afterwards,
Centrifugation was performed at 4 ° C. and 12000 rpm for 20 minutes. 10 μl of the supernatant after centrifugation was added to 790 μl of PBS (−), and a protein assay staining solution (Dye Reagent Co., Ltd.) was added.
ncentrate: Bio-Rad, catalog number 500-0006) 2
00 μl was added. After standing at room temperature for 5 minutes, 59
The protein was quantified by measuring the absorbance at 5 nm. SDS polyacrylamide gel electrophoresis of a lysate containing an equal amount of protein was performed in a Laemmli buffer system using the sample on which protein quantification was performed. After the electrophoresis, blotting and subsequent blocking were performed according to the method described in Example 1. That is,
Protein transfer device (Trans-Blot Electrophoretic Tra
nsfer Cell (Bio-Rad) at room temperature for 10
At 0 V, 0.45 μm nitrocellulose membrane (Schleich
er & Schuell, catalog number 401196), and the gel was blotted for 3 hours. As the blotting buffer, the same buffer as used in Example 1 (3) was used. After blotting, nitrocellulose membrane was coated with 10% skim milk (Snow Brand Milk Products) -PBS
(-) The solution was incubated at room temperature for 30 minutes to block non-specific binding.

After blocking, a primary antibody reaction was carried out on the nitrocellulose membrane using the anti-human HSP47 rat polyclonal antibody prepared in Example 1. afterwards,
The solution was replaced with PBS (-) for 5 minutes, and the solution was washed twice with a slow rocking shaker, and further washed with a PBS (-)-0.1% Tween20 (Bio-Rad, Cat. No. 170-6531) solution. The solution was replaced every 15 minutes, and four washes were performed. Finally, PBS
Washing was performed twice for 5 minutes each with (−). After washing was completed, peroxidase-labeled goat anti-rat IgG antibody (So
uthern Biotechnology, Catalog No. 3030-05)
A secondary antibody reaction was performed for 2 hours using 5 ml of an antibody solution prepared by diluting 5000 times with a PBS (-) solution containing skim milk. After the completion of the reaction, the nitrocellulose membrane was changed with a PBS (-) solution for 5 minutes to give 2
The washing was performed 5 times with a slow rocking shaker while changing the solution for 15 minutes each with PBS (-)-0.1% Tween 20 solution. Finally, washing was performed twice for 5 minutes each with a PBS (-) solution. Extra PBS
(-) After removing the solution, Western blotting detection reagent (ECL Westernblotting detection reagent; Ame
rsham, catalog number RPN2106), sprinkle onto the nitrocellulose membrane, incubate for 1 minute, remove excess detection reagent, wrap the nitrocellulose membrane in wrap, and cover the reaction surface with X-ray film (Kodak X-OMAT, AR, (Catalog No. 165 1454), exposure, development and HSP47
Was examined.

A control test, namely ginsenoside Rg
_In the breast cancer cell line MCF7 to which ₁ was not added, one band having a molecular weight of about 47 kD was detected. Ginsenoside R
In breast cancer cell line MCF7 was added g _1, corresponding bands were very faint band. Namely, ginsenoside Rg ₁ can be concluded to have activity of inhibiting synthesis inhibitor the expression of HSP47, this fact indicates that ginsenoside Rg ₁ acts suppressively to increased extracellular matrix production ing.

[0036]

As described in detail above, the synthetic inhibitors of the present invention include, for example, cirrhosis, interstitial lung disease, chronic renal failure (or a disease that results in chronic renal failure), cardiac hypertrophy, post-operative Collagen synthesis in cells affected by diseases that show pathology of extracellular matrix production, such as keloids and hypertrophic scars, scleroderma, arteriosclerosis, or rheumatoid arthritis, which occur after scars, burn scars, traffic accidents, etc. It has the effect of improving hyperactivity. Therefore, by administering the synthetic inhibitor according to the present invention, the fibrosis and sclerosis of organs and tissues are prevented, and as a result, the physiological condition of the sick patient is effectively improved,
The disease can be effectively treated. Further, the synthetic inhibitor of the present invention is also useful for the preventive treatment of various diseases accompanied by abnormal growth of angiogenesis. Furthermore, it has been clarified that the stroma having the basic skeleton of type I collagen and fibronectin serves as a guide for the cancer cells detached in the metastasis of cancer to enter the nearby blood vessels. It is also possible to suppress cancer metastasis by administering a synthetic inhibitor of

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location A61K 31/705 ACV A61K 31/705 ACV AED AED 35/78 ABG 35/78 ABGM ADA ADAM

Claims (4)

[Claims] 1. A heat shock protein synthesis inhibitor having a molecular weight of 47 kilodaltons, containing ginsenosides as an active ingredient. 2. Ginsenosides are ginsenoside Rg.
The heat shock protein synthesis inhibitor having a molecular weight of 47 kilodalton according to claim _1, which is ₁ . 3. A heat shock protein synthesis inhibitor having a molecular weight of 47 kilodaltons, comprising a plant extract containing ginsenosides as an active ingredient. 4. A heat shock protein synthesis inhibitor having a molecular weight of 47 kilodaltons, comprising an extract of carrot or kojin as an active ingredient.