CN110922377A - Application of iso-Penicillium xanthone A from Penicillium oxalicum in aspect of melanoma - Google Patents
Application of iso-Penicillium xanthone A from Penicillium oxalicum in aspect of melanoma Download PDFInfo
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- CN110922377A CN110922377A CN201811474204.3A CN201811474204A CN110922377A CN 110922377 A CN110922377 A CN 110922377A CN 201811474204 A CN201811474204 A CN 201811474204A CN 110922377 A CN110922377 A CN 110922377A
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Abstract
The invention relates to iso-Penicillium xanthone A from Penicillium oxalicum and application thereof in melanoma. The compound is characterized by comprising the following structural characteristics:
Description
Technical Field
The invention relates to iso-Penicillium xanthene A derived from penicillium oxalicum and application thereof in melanoma, belonging to the field of biological medicine.
Background
With the development of science and technology, the medical level of our medicine has been improved, but the incidence of cancer is on the rise, which is the second leading cause of death worldwide. Malignant melanoma is a skin cancer caused by malignant proliferation of melanocytes. Although the incidence of the disease is low, the malignancy is high, the metastasis is early, the death rate is high, and the incidence is high in adults mostly. The effect of surgical excision alone is not ideal, so the combination of chemotherapy and medicines is often needed for treatment. To date, the treatment drugs aiming at malignant melanoma are chemical synthesis drugs, the effective treatment rate is only 7% -12%, and the drugs have large side effects and high price, so that the discovery of novel chemotherapeutic drugs is urgent.
Penicillium anthrone is an anthraquinone organic compound produced by secondary metabolism of fungi, and is first obtained from Penicillium anthrone A in 2002Penicillium thomiiTo date, over a decade has passed. The compounds are reported to date as 2, each of which is penam A, B and all of which are 2-4' linked. The compound has obvious inhibition on tumor cells, and is an ideal raw material for developing antitumor drugs or tumor cell proliferation inhibitors. But the research on the antitumor activity of their enantiomers is still blank.
The present inventors have studied and found that Penicillium oxalicum (Penicillium oxalicum) IBPT-6, (deposited at the chinese type culture collection on 25.12.2013, address: wuhan, Wuhan university, the accession number is: CCTCC NO: m2013714), and the active ingredients thereof were studied. Researches show that the penicillium anthrone compound has anti-human melanoma activity, and the penicillium anthrone compound is not found at presentThe compound reports the proliferation inhibition activity to human melanoma cells, so that no medicine related to the proliferation inhibition activity is found on the market.
Disclosure of Invention
The invention aims to provide iso-Penicillioxanthone A derived from penicillium oxalicum and application thereof in melanoma.
In order to realize the purpose, the following technical scheme is adopted:
iso-Penicillium xanthone A derived from Penicillium oxalicum has effects of inhibiting melanoma cell proliferation and resisting human melanoma. The structural formula is as follows:
the preparation method of the compound is to culture penicillium oxalicum (A)Penicillium oxalicum) IBPT-6, obtaining fermented mycelium, and separating and purifying the compound from the mycelium. The method comprises the following specific steps:
1 fermentation production
Culturing microorganism by conventional method, collecting Penicillium oxalicum (B) ((B))Penicillium oxalicum) IBPT-6 is inoculated on a flat solid culture medium, cultured in an incubator at 28 ℃ for 2-3 d, then inoculated in a fungus culture medium, statically cultured at 28 ℃ for 30d, and filtered by a plurality of layers of gauze to obtain mycelium and fermentation liquor; the fungus culture medium comprises the following components: 10.0 g of glucose, 20.0 g of maltose, 20.0 g of mannitol, 10.0 g of monosodium glutamate, 3.0 g of yeast extract, 15.0 g of NaCl and KH2PO40.5 g、MgSO4·7H2O0.3 g and ultrapure water were added to the reaction solution to a constant volume of 1L.
2 obtaining of extract
The mycelium and the fermentation broth were separated with gauze. Continuously performing ultrasonic wall breaking on the mycelia for 3 times by using an acetone solution (containing 20-30% of water), and filtering to remove residues to obtain a crude extract of the mycelia containing acetone and water. Concentrating under reduced pressure to remove acetone to obtain water solution of crude extract, extracting with ethyl acetate at volume ratio of the water solution to ethyl acetate of 1:2 for 3 times to obtain ethyl acetate crude extractive solution, concentrating, and evaporating to obtain mycelium extract 36.5 g.
3 separation and purification of Compound
The mycelium extract is mixed with 100-plus 200-mesh silica gel, and the mixture is mixed with petroleum ether: dichloromethane: methanol is used as gradient eluent, and decompression silica gel chromatographic column chromatography is carried out. The components A-E are separated by simple thin-layer chromatography analysis, combination and separation. Component C (12.7 g) was purified in dichloromethane: methanol =1:2 as gradient eluent, performing gel column chromatography (Sephadex LH-20), and mixing to obtain four subfractions C after thin layer chromatography1-C4. Subfraction C3(4.9 g) by semi-preparative liquid chromatography (type 1010 ODS-A, 10X 250 mm, 5 μm): the isolation flow was 5 mL/min and the mobile phase was 55% acetonitrile with 0.1% TFA to give the indicated compound (510mg, t)R22.8 min)。
Said penicillium oxalicum (A), (B)Penicillium oxalicum) IBPT-6, which has been deposited at the China center for type culture Collection on 25.12.2013, address: wuhan, Wuhan university, the accession number is: CCTCC NO: m2013714.
The invention also comprises the application of the compound in preparing medicaments for inhibiting the proliferation of human melanoma cells and the application of the compound in preparing medicaments for resisting human melanoma.
The invention has the following remarkable advantages: researches show that the penicillanicum anthrone compound has obvious activity of inhibiting human melanoma cell proliferation, and no report of the activity of the compound on inhibiting human melanoma cell proliferation exists at present, so that no relevant medicine exists in the market.
Drawings
FIG. 1 major COSY, HMBC and NOE signals of Iso-Penicillixanthone A.
Detailed Description
The chemical structures of the compounds referred to in the examples below:
EXAMPLE 1 fermentative production and isolation purification of the Compound
1 fermentation production
Fermentation culture of producing bacteria: taking Penicillium oxalicum (B) according to a conventional method for culturing microorganismsPenicillium oxalicum) IBPT-6 (deposited in the China center for type culture Collection on 25.12.2013, address: wuhan, Wuhan university, the accession number is: CCTCC NO: m2013714) and inoculating the mixture to a flat solid culture medium and culturing the mixture for 2-3 d in an incubator at 28 ℃.
Taking flat plate to culture 2-3 d penicillium oxalicum (Penicillium oxalicum) An appropriate amount of IBPT-6 was inoculated into a container containing 400 mL of culture broth [ composition of culture broth (g/L): 10.0 parts of glucose, 20.0 parts of maltose, 20.0 parts of mannitol, 10.0 parts of monosodium glutamate, 3.0 parts of yeast extract, 15.0 parts of NaCl and KH2PO40.5、MgSO4·7H2O0.3, diluting with ultrapure water to a constant volume of 1L, and performing static culture at 28 ℃ for 30d to obtain mycelium and fermentation liquor.
2 obtaining of extract
The mycelium and the fermentation broth were separated with gauze. Continuously performing ultrasonic wall breaking on the mycelia for 3 times by using an acetone solution (containing 20-30% of water), and filtering to remove residues to obtain a crude extract of the mycelia containing acetone and water. Concentrating under reduced pressure to remove acetone to obtain water solution of crude extract, extracting with ethyl acetate at volume ratio of the water solution to ethyl acetate of 1:2 for 3 times to obtain ethyl acetate crude extractive solution, and concentrating under reduced pressure to near dry to obtain mycelium extract 36.5 g.
3 separation and purification of Compound
The mycelium extract is mixed with 100-plus 200-mesh silica gel, and the mixture is mixed with petroleum ether: dichloromethane: methanol is used as gradient eluent, and decompression silica gel chromatographic column chromatography is carried out. By simple thin layer chromatography, combining, and separating into components A-E. Component C (12.7 g) was purified in dichloromethane: methanol =1:2 as gradient eluent, performing gel column chromatography (Sephadex LH-20), and mixing to obtain four subfractions C after thin layer chromatography1-C4. Subfraction C3(4.9 g) by semi-preparative liquid chromatography (type 1010 ODS-A, 10X 250 mm, 5 μm): the isolation flow was 5 mL/min and the mobile phase was 55% acetonitrile with 0.1% TFA to give the indicated compound (510mg, t)R22.8 min)。
A compound: is yellow powder at normal temperature, and is a yellow powder,[α]20 D+ 105.6° (c 1, pyridine); [α]20 D+ 3.1°(c 1, Me2CO) high resolution electrospray mass spectrometry HRESI-MS at m/z: 661.1550 shows molecular ion peak [ M + Na]+(calcd for C32H30NaO14661.1533); the molecular weight was 638, and the molecular formula was C as presumed from the binding spectrum information32H30O14。1H and13the C-NMR data are shown in Table 1, and the main COSY, HMBC and NOE signals are shown in FIG. 1.
Of the compounds of Table 11H and13C-NMR data (500 MHz)1H and 126 MHz13C, in DMSO-d 6 )
Example 2 in vitro testing of antitumor Activity
1 Experimental sample and experimental method
Preparing a solution of a sample to be detected: the test sample was the purified compound isolated and purified in example 1. Precisely weighing a proper amount of sample, preparing a 100 mM mother solution by DMSO, filtering and sterilizing by a filter membrane, and storing at-20 ℃ for later use. The proportion of DMSO is controlled below 1 per mill.
Taking out frozen cell strain from liquid nitrogen, rapidly melting in 37 deg.C water bath, centrifuging at 1200 rpm for 5 min, discarding frozen solution, adding 1 mL culture medium, pumping into culture flask, adding 5 mL fresh DMEM or RPMI 1640 culture medium, gently shaking to uniformly suspend cells in culture medium, standing at 37 deg.C and 5% CO2Cultured in an incubator. When the cell density reaches about 90%, passage is carried out, old culture medium is removed, PBS is washed for 2 times, 300 mu L of pancreatin is added (the pancreatin can cover the bottom of the bottle), the cell is digested in an incubator at 37 ℃ until the cell becomes round and is about to fall off, the culture medium containing 10% fetal calf serum is added to stop the digestion, the cell is divided into 2-3 new culture bottles after being blown and evenly mixed, and the culture medium is supplemented to ensure that the cell continues to grow in the incubator.
Cell proliferation inhibitory Activity test method (WST-1 method)
The activity evaluation of the anti-tumor cells adopts a WST-1 kit detection method, and the cell concentration is adjusted to be 3 multiplied by 10 after the tumor cells in the logarithmic growth phase are digested4a/mL single cell suspension, 100 μ L of the cell suspension was mixed and inoculated into a 96-well plate, 5 replicate wells per concentration. Then placing at 37 ℃ and 5% CO2The culture was carried out overnight in an incubator. The supernatant was removed and the drug was diluted with medium to different concentrations and added to the corresponding 96-well plates, and the control was added to medium containing the same amount of DMSO. After culturing for 72 h, adding 10 mu L of WST-1 solution into each well, incubating for 2 h at 37 ℃, gently shaking and uniformly mixing, and measuring the light absorption value at 450 nm by using a microplate reader. The mean OD value for 5 wells was calculated and calculated according to the formula: cell proliferation inhibition rate = (OD control group-OD blank group)/(OD experimental group-OD blank group) × 100% the proliferation inhibition rate of each concentration of drug on tumor cells was calculated, and half inhibition rate IC was calculated using Graphpad prism5.0 software50。
2 results of the experiment
The results of the cell proliferation inhibitory activity test are shown in Table 2.
TABLE 2 inhibitory Activity of Compounds on human melanoma cell proliferation
3 conclusion
The compound has good anti-tumor activity on human melanoma cells. Can be used for preparing melanoma cell proliferation inhibiting medicine or antitumor medicine for melanoma research.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (3)
1. Compound (I)The method is characterized in that: the compound is prepared by the following method: fermented Penicillium oxalicum (Penicillium oxalicum) IBPT-6, obtaining a fermentation product, and then separating and purifying the fermentation product to obtain the compound; wherein said Penicillium oxalicum (A), (B)Penicillium oxalicum) IBPT-6, which has been deposited at the China center for type culture Collection on 25.12.2013, address: wuhan, Wuhan university, the accession number is: CCTCC NO: m2013714.
2. Use of a compound according to claim 1 for the preparation of a medicament for inhibiting the proliferation of melanoma cells.
3. Use of a compound according to claim 1 for the manufacture of a medicament for the treatment of melanoma.
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Citations (3)
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DE3002761A1 (en) * | 1979-01-30 | 1980-07-31 | Asahi Chemical Ind | NEW SECALONIC ACIDS METHOD FOR THE PRODUCTION AND USE THEREOF |
JPH0873452A (en) * | 1994-07-07 | 1996-03-19 | Ajinomoto Co Inc | New antibiotic |
CN107298671A (en) * | 2017-06-17 | 2017-10-27 | 福州大学 | Come from the secalonic acid H of penicillium oxalicum and prepare the application of anti-human colon cancer drug |
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2018
- 2018-12-04 CN CN201811474204.3A patent/CN110922377A/en active Pending
Patent Citations (4)
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DE3002761A1 (en) * | 1979-01-30 | 1980-07-31 | Asahi Chemical Ind | NEW SECALONIC ACIDS METHOD FOR THE PRODUCTION AND USE THEREOF |
US4424373A (en) * | 1979-01-30 | 1984-01-03 | Asahi Kasei Kogyo Kabushiki Kaisha | Secalonic acids |
JPH0873452A (en) * | 1994-07-07 | 1996-03-19 | Ajinomoto Co Inc | New antibiotic |
CN107298671A (en) * | 2017-06-17 | 2017-10-27 | 福州大学 | Come from the secalonic acid H of penicillium oxalicum and prepare the application of anti-human colon cancer drug |
Non-Patent Citations (5)
Title |
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GUANGWEI WU,ET AL.: "Structure-based discovery of cytotoxic dimeric tetrahydroxanthones as potential topoisomerase I inhibitors from a marine-derived fungus", 《EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY》 * |
LI CHEN,ET AL.: "Isolation of 4,4′-bond secalonic acid D from the marine-derived fungus Penicillium oxalicum with inhibitory property against hepatocellular carcinoma", 《THE JOURNAL OF ANTIBIOTICS》 * |
TAMAM EL-ELIMAT,ET AL.: "Biosynthetically Distinct Cytotoxic Polyketides from Setophoma terrestris", 《EUROPEAN J ORG CHEM.》 * |
杨小姣 等: "中华剑角蝗内生真菌Penicillium oxalicum次级代谢产物Secalonic acid A的分离及毒性实验研究", 《三峡大学学报(自然科学版)》 * |
江蔚新 等: "丰肉结海绵相关青霉菌HLS-216次级代谢产物研究", 《药学研究》 * |
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