Classifications

• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
  • C12P1/00—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes
  • C12P1/06—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes by using actinomycetales
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
  • C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
  • C12N1/20—Bacteria; Culture media therefor
  • C12N1/205—Bacterial isolates
• • C—CHEMISTRY; METALLURGY
  • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
  • C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
  • C12R2001/00—Microorganisms ; Processes using microorganisms
  • C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
  • C12R2001/465—Streptomyces

Definitions

• the present invention relates to novel compounds DC-88A and DC-89A1 and methods for producing them, and these compounds can be produced by culturing a microorganism of the genus Streptomyces. These compounds have excellent antibacterial and antitumor effects.
• a microorganism belonging to the genus Streptomyces and capable of producing 13C-88A and / or DC-89A1 is cultured in a medium, thereby exhibiting an antibacterial effect and an antitumor effect.
• New substances DC-88 A and Z or DC-89 A1 can be obtained.
• the physicochemical properties of these compounds are shown below.
• Solubility Soluble in methanol, ethanol, acetate, cross-linked form, ethyl acetate, DMS ⁇ , but hardly soluble in water and hexane.
• Solubility Dissolves well in methanol, ethanol, ethyl acetate, acetate, chloroform, and dimethyl sulfoxide.
• the antibacterial action is to dissolve 3 g of Bacto Tripton (manufactured by Difco), 3 g of meat extract, 1 g of yeast extract, 1 g of glucose, and 16 g of agar in 1 ⁇ water. Using a medium (PH 7) prepared in this manner, the measurement was carried out by an agar dilution method.
• Atsuta the value of acute toxicity (LD 50) is DC- about 8 8 A about 0. 9 4 rag kg. DC- About 8 9 A 1 to about 1. 1 7 mgZkg of the intraperitoneal administration to mice.
• Sarcosine one Ma 1 8 0 solid tumor cells 5 X 1 0 5 cells were transplanted into axilla subcutaneously weighing approximately 2 0 g 1 group 6 mice ddy male mice. Twenty-four hours after transplantation, 0.2 ml of a DC-88A phosphate buffered saline (hereinafter referred to as PBS) solution having a concentration shown in Table 2 was intraperitoneally administered once.
• PBS DC-88A phosphate buffered saline
• composition of PBS is Na C 0.8 g M ⁇ K C ⁇ 0.02 g / dH,
• Average tumor body weight (mm 3 ) or TZC [T: average tumor volume (mm 3 ) of test example, 10 days after transplantation, C: average tumor volume of control (0.2 ml of PBS solution administered intraperitoneally) mm 3 )] was measured, and the results are shown in Tables 3 and 4.
• a group was set in which 0.2 ml of a PBS solution of mitomycin C was intraperitoneally administered 24 hours after tumor cell implantation.
• DC-88A and Z or DC-89A1 belong to the genus Streptomyces DC-88A and Z or DC-89A1 producing strains are cultured in a nutrient medium and cultured. From DC-88 A and Z or DC-89 A1 from DC-88A and Z or DC-89A1 producing strains belonging to the genus Streptomyces and any strain capable of producing DC-88A and Z or 89A1. However, it can be used. Representative strains include the aforementioned D-88 strain and D-89 strain.
• Aerial mycelium branched, but not fragmented.
• Table 7 shows the results of culturing DO-88 strain on various agar media at 28 ° C for 3 weeks.
• Agar medium AM Abundant, natural (2 dc)
• Agar medium A M Abundant, cobalt. Gray
• a M Abundant, natural (.2 dc) ⁇ cobalt gray (2 fe)
• a M Moderate, concealed
• a M Medium, silver and gray
• the growth temperature was 2, and the effects on skim milk and fibrin were observed at 28 ° C for 1 month, and the other items were observed at 28 ° C for 2 weeks.
• Optimal temperature range 26 to 30 ° C
• the D0-88 strain is classified by Lessivalie et al. As having LL-type diaminopimelic acid in its cell wall [International Journal Journal of Systematic ⁇ Nocterio This is a type I cell wall strain according to the International Journal of Systematic Bacteriology 20, 435-443 (1970)]. On the other hand, morphologically, this strain forms aerial hyphae, forms a simple branch, and forms a long spore chain at its tip. It is classified into the genus Seth.
• Strept Myces-Redicas and Strept Myces libani contain orange ⁇ yellow in the color of the backside of the settlement
• Streptomyces * rivani produces a small amount of yellow soluble pigment.
• the color of the aerial bacteria contains red, and the growth temperature of Streptomyces' sa-mobulgaris is between 40 and 50. 8 different from 8 shares.
• the various mycological characteristics of Streptomyces palbras were relatively consistent with those of the DO-88 strain.
• the growth temperature is 2 months later, the effect on skim milk and fibrin is 2 months at 28 ° C, and the other items are 2 weeks after 2 months. Growth status on various agar media
• a M Abundant, Beige ⁇ Brown
• Agar medium A M poor, natural
• Agar medium A M Abundant, white (a) ⁇
• a M poor, white (a) ⁇
• Nutrient agar medium G Normal, granular
• a M Abundant, Cobalt 'Gray
• Peptone ⁇ Yeast G Normal, smooth
• aerial hyphae forms a simple branch, forms a long spore chain at its tip, and contains LL-diaminopimelic acid in the cell wall. It is classified into the genus Streptomyces. From the approved species, DO-89 strains and species that matched their mycological characteristics were searched. That is, the following terms were used as keys.
• Non-producing pigments Non-producing pigments; non-production, assimilation pattern of carbon source, and color tone in various media ( results of search: S. parvullus, S. lydicus, S. Gallis (S. thermovu 1 garis), S. misionensis (S. misionensis), and S. libonii (S. libani) were mentioned.
• S. parvulus has a green color in the color of the underlying mycelium
• S. thermobulgaris has an optimum growth temperature of 40 to 50 ° C
• Mycionsis differs from the DO-89 strain in that S. libani produces a soluble pigment, albeit thin, in its aerial mycelia.
• the DO-89 strain was identified as Strept Myces ⁇ Redicas and named S. lidicas DO-89. Deposited with the Research Institute as No. 988 No. «— ⁇
• the strains shown here may be mutated by human mutation such as ultraviolet rays, X-rays, drugs, etc. Even among such mutants, those having the ability to produce DC-88A and / or DC-89A1 can be applied to the present invention.
• any of a natural medium and a synthetic medium may be used as long as the medium contains a carbon source, a nitrogen source, and an inorganic substance.
• Carbon sources include glucose, starch, dextrin, and glycerol; mannose, fructos, sucrose, molasses, and alcohols (metanol, ethanol). ), Organic acids (acetic acid, formic acid, citric acid, lingic acid, etc.). Nitrogen sources include ammonium chloride, ammonium sulfate, ammonium nitrate, sodium nitrate, urea, peptone, meat extract, yeast extract, dried yeast, corn steep liquor, soybean flour, and kazami For example, acid is used.
• Inorganic substances include sodium chloride, potassium chloride, ferrous sulfate, zinc sulfate, manganese sulfate, copper sulfate, nickel sulfate, lithium phosphate, lithium phosphate Potassium, magnesium phosphate, magnesium sulfate, calcium carbonate and the like are used.
• a substance that promotes the production of DC-88A or DC-89A1 for example, biotin, vitamin, or the like, may be added to the medium.
• the most suitable culture method is a liquid culture method, particularly a submerged stirring culture method.
• the culture temperature is 25 to 33 ° C, preferably 28 to 30.
• the pH of the culture medium is adjusted to pH 4 to 10 by adding ammonia water, ammonium carbonate solution, etc. Or adjust to 6-8.
• DC-88A and Z or DC-89A1 are produced and accumulated in the culture solution.
• the culture is stopped when the production amount in the culture reaches the maximum, and DC_88A and Z or DC-89A1 are obtained from the culture obtained by separating the cells. Purify and isolate. If necessary, extract the cells with black-mouthed form, acetate, etc., and add them to the extract.
• DC-88A and Z or DC-89A1 For the isolation and purification of DC-88A and Z or DC-89A1 from culture broth, it is common to isolate microbial metabolites from the culture broth. A method is used.
• the ⁇ solution is treated with a non-ionic porous resin such as HP-20 (manufactured by Mitsubishi Kasei) to adsorb the active ingredient, and then methanol, ethyl acetate, and acetate are added. Elute with.
• the purified product is purified using a silica gel (Wakogel C-200 Wako Pure Chemical). Get. Further, this is purified using silica gel (Lichroprep Si60 Merc) or the like, and then purified using a reversed-phase silica gel (Wakoge L. C-0DS Wako Pure Chemical) etc. to obtain DC-88A and / or Or DC—89 A1.
• the DC-88A thus obtained can be further purified by recrystallization, high performance liquid chromatography, or the like.
• DC-88A and DC-89A1 can be used as antibiotics or antitumor agents consisting of themselves or containing an effective amount thereof and a pharmaceutical adjuvant.
• the pharmaceutical adjuvant includes commonly used diluents, excipients, disintegrants, binders, lubricants, bases, and the like.
• Examples of the administration form include, for example, when used as an injection, a compound commonly used in this field as a diluent, for example, after dissolving the compound in ethanol (using a surfactant and a solubilizing agent as necessary), 0, with or without aspiration, mixed with distilled water for injection; physiological saline; solutions of glucose, fructose, mannite, etc. in distilled water for injection 0
• an injection solution obtained by freeze-drying an ethanol solution or a powder injection solution obtained by mixing a compound with sodium chloride may be used.
• These injections are used, for example, for intravenous administration, but intramuscular administration, intraarterial administration, intraperitoneal administration, and intrathoracic administration are also possible.
• intravenous administration but intramuscular administration, intraarterial administration, intraperitoneal administration, and intrathoracic administration are also possible.
• excipients, disintegrants, binders, lubricants, etc. are mixed and molded into tablets, granules, and powders by conventional methods.
• Figures 1 and 3 show the UV-absorption spectra (CH 3 OH solution) of DC-88A and DC-89A1, respectively.
• 1 or solid line indicates measurement results for neutral
• 2 or dotted line indicates measurement results for acidity of hydrochloric acid (0.01N)
• 3 or dashed line indicates measurement results for alkaline solution of sodium hydroxide solution (0.01N). .
• FIGS 2 and 4 show the red external absorption spectrum (CHC 3 solution) of DC-88A and DC-89A1, respectively.
• DC-88A and DC_89A1 were tracked by bioassay using Bacillus subtilis No. 10707 or by ultraviolet absorption in thin-layer chromatography. .
• Streptomyces pulp plus PERM BP-1002 was used as the inoculum.
• the strain was transformed into a 2 ⁇ Erlenmeyer flask with dextrin 20 s / H, peptone 1 OgZ, yeast extract lgZ, cone 'step' power-5 g ZH, glucose Seed medium having the composition of 10 gZ of base and 5 g of calcium carbonate (2 before sterilization at pH 7.2) was inoculated into 300 ml and shaken at 30 ° C for 48 hours (at 200 rpm). ) Cultured.
• the resulting seed culture is inoculated into a fermentation medium 15i having the following composition in a 30-volume jar fermenter, and aerated and agitated at 30 ° C (rotation speed: 250 rpm; aeration amount: 15 in). Cultivated.
• Fermentation medium composition soluble starch 20 gZ, dry yeast 5 gZ ⁇ ,
• the pH of the culture medium during the culture was adjusted for 72 hours by adjusting the pH to 6.5 to 7.5 using ammonia water.
• the cells were separated from the culture solution to obtain a solution 13.
• Solution 1 3 to 2 non-ionic porous resin HP—20 product The active substance was adsorbed by passing through a column passed through Nippon Steel Co., Ltd. (Mitsubishi Chemical), washed with water, and then washed with a 50% methanol solution to remove impurities. After washing again with water, elution was carried out with ethyl acetate. After concentrating the eluted fractions,
• Example 1 Using Streptomyces * Lydiacus FERM BP-988 as an inoculum, Example 1 was repeated to obtain 1.8 mg of DC-88A.
• Streptomyces lidicas FERM BP-988 was used as the inoculum.
• Bacterial tripton manufactured by Difco
• yeast extract 5 gZ ⁇ yeast extract 5 gZ ⁇
• meat extract 3 gZ ⁇ soluble starch 10 gZ ⁇
• glucose Inoculate 300 ml of a seed medium (pH 7.2 before sterilization) with a composition of 10 g ⁇
• the cells were cultured with shaking (200 rpm) for 48 hours.
• the seed culture thus obtained was placed in a 30-volume jar fermenter with a medium having the same composition as described above.
• the mixture was transferred to 15 ⁇ at a ratio of 5% (volume) and cultured at 28 ° C for 24 hours by a stirring method (rotation speed: 200 rpm, aeration rate: 15 ml Ztnin).
• the thus obtained culture solution was transferred at a ratio of 10% (volume) to a fermentation medium of the following composition in a 200-volume tank fermenter having the following composition at a rate of 10% (volume), and aeration and stirring were performed at 28 ° C.
• Fermentation medium composition dextrin 50 gZ, dry paste 10 gZjg-Na NH 4 HP 0 ⁇ 4 H 2O 10 gZ, K H2P O 4O.5 /. (Adjusted before sterilization p H 7. 2, N a 0 H) M g S 0 4 ⁇ 7 H 2 0 0.5 g ⁇ , chloride mosquito re U beam 1 0 g Z, carbonate force Rushiu arm 5 g Z.
• the culture was cultured for 70 hours without controlling the pH of the medium during the culture.
• the cells and the precipitate were separated from the culture to obtain a solution 100 ⁇ .
• the cells and the precipitate were added with acetone 30 and left overnight, then the acetone extract was filtered, and the ⁇ solution (25i) was diluted with 75 g of water.
• the culture solution and the diluent were combined (total of 200 i), adjusted to pH 5.0 with hydrochloric acid, and passed through Dyarion HP-210i to adsorb the active substance.
• the extract was washed sequentially with water and a 40% methanol solution, and then eluted with methanol.
• the eluted fraction was concentrated, adjusted to pH 6.0, and extracted with ethyl acetate.
• n-hexane ethyl acetate: acetic acid (225: 675: 4 v / v / v) was passed through the column to obtain an active fraction.
• silica gel ethyl acetate: acetic acid (225: 675: 4 v / v / v) was passed through the column to obtain an active fraction.
• the active fraction was eluted by applying n-hexane: ethyl acetate: acetic acid (250: 250: 2.5 v / v / v) at a pressure of 5 kgZcnf.
• the obtained active fraction was concentrated, dried and dissolved in a small amount of acetonitrile.
• This solution sample is pre-suspended with acetonitrile and applied to a force ram.
• ⁇ chemical modified type silica gel (Wakogel LC NH 2 -10H, manufactured by Wako Pure Chemical Industries, Ltd.) to 1 0 0% ⁇ Seto D Application Benefits Le after placed on 90% ⁇ Seto D Application Benefits Le aqueous solution was eluted by the concentration gradient method. Active fractions were collected and concentrated to give 1 O mg of pure DC189A1.
• the physicochemical properties, antibacterial activity and antitumor activity of the obtained DC-89A1 are as described above.

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• 1987
  • 1987-04-17 EP EP87902737A patent/EP0271581B1/en not_active Expired - Lifetime
  • 1987-04-17 WO PCT/JP1987/000247 patent/WO1987006265A1/ja not_active Ceased
  • 1987-04-17 JP JP62-502491A patent/JPH0684377B2/ja not_active Expired - Lifetime
  • 1987-04-17 DE DE8787902737T patent/DE3783588T2/de not_active Expired - Lifetime
• 1988
  • 1988-09-09 US US07/242,788 patent/US4923990A/en not_active Expired - Lifetime

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