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Endophytic fungus Onygenales X117 of incarvillea younghusbandii sprague, and preparation method and application of fermented product of endophytic fungus Onygenales X117

A technology for Zangbo flower and endophytic fungi, applied in the biological field, can solve the problems of large-scale synthesis and application of unfavorable compounds, no significant activity of derivatives thereof, complicated steps, etc., and achieves good application prospects and good anti-inflammatory activity. , the effect of broad development space

Active Publication Date: 2019-07-05
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been no reports about other biological activities of this compound, including the discovery of a series of derivatives of this type of compound and their glycoside compounds, but no significant activity of their derivatives has been found[ Ana Kralj, et al, J. Nat. Prod. 2006, 69, 995-1000; Haruhiro Fujimoto, et al, Chem. Pharm. Bull. 2006, 54(4) 550-553; Daigo Wakana, et al, Mycotoxins 2008, 58 (1)1-6]
[0003] Regarding the synthesis of Gymnoascolide A, in 2013 and 2015, American scientists and Chinese scientists respectively synthesized Gymnoascolide A and its derivatives based on the Suzukie Miyaura reaction principle [AnnaN.Parker, et al, Tetrahedron Letters 2013,54, 5322–5324; Lin Mei, et al, Tetrahedron 2015, 71, 3325-3332], however, the steps of synthesizing Gymnoascolide A are cumbersome and costly, which is not conducive to the large-scale synthesis and application of this compound

Method used

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  • Endophytic fungus Onygenales X117 of incarvillea younghusbandii sprague, and preparation method and application of fermented product of endophytic fungus Onygenales X117
  • Endophytic fungus Onygenales X117 of incarvillea younghusbandii sprague, and preparation method and application of fermented product of endophytic fungus Onygenales X117
  • Endophytic fungus Onygenales X117 of incarvillea younghusbandii sprague, and preparation method and application of fermented product of endophytic fungus Onygenales X117

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1 Isolation and Identification of the Endophytic Fungus Onygenales X117 from Zangboluohua

[0057] 1. Isolation of strains

[0058] Sample: The root of a Tibetan medicine Incarvillea younghus bandii Sprague in the saline-alkali land beside the Bamucuo Salt Lake in Bangor County, Tibet Autonomous Region.

[0059] Isolation method: Sterilize the root of the fresh Tibetan medicinal material Zangboluo flower, cut off the outer root bark, inoculate it into PDA medium, Martin medium or Chase medium under aseptic conditions, and culture it below 20°C for 5-20 days , to obtain a single strain Onygenales X117; the obtained strain Onygenales X117 was preserved at 4° C. on a common PDA medium slant.

[0060] 2. Identification of strains

[0061] The biological characteristics of this strain are that when cultured at a constant temperature of 5-15°C on PDA medium, the surface of the colony is orange short hairy hyphae, and the back is orange-red with spores; when cultured...

Embodiment 2

[0065] Example 2 Fermentation of the endophytic fungus Onygenales X117 and the extraction, separation and purification of the compound Gymnoascolide A

[0066] 1. Experimental method

[0067] S1. Potato residue solid medium was used, and the bacterial strain of the endophytic fungus Onygenales X117 strain of Tibetan medicinal material was inserted into a triangular flask filled with potato residue solid medium, and cultured statically for 30 days under variable temperature conditions of 10-28°C;

[0068] S2. Add methanol-chloroform (v / v 1:1) mixed solvent into the conical flask, extract 4 times, and concentrate the extract by rotary evaporation. Ethyl ester-petroleum ether system (1:20, 1:10, 1:5, 1:4, 1:3, 1:2, 1:1) was eluted, and the obtained 1:20 components were purified by petroleum The compound Gymnoascolide A was obtained by recrystallization from ether-ethyl acetate.

[0069] 2. Experimental results

[0070] The productive rate of compound Gymnoascolide A obtained i...

Embodiment 3

[0071] Example 3 Fermentation of the endophytic fungus Onygenales X117 and the extraction, separation and purification of the compound Gymnoascolide A

[0072] 1. Experimental method

[0073] S1. Potato residue solid medium was used, and the bacterial strain of the endophytic fungus Onygenales X117 strain of Tibetan medicinal material was inserted into a triangular flask filled with potato residue solid medium, and cultured statically for 25 days under variable temperature conditions of 5-25°C;

[0074] S2. Add methanol-chloroform (v / v 1:1) mixed solvent into the conical flask, extract 4 times, and concentrate the extract by rotary evaporation. Ethyl ester-petroleum ether system (1:20, 1:10, 1:5, 1:4, 1:3, 1:2, 1:1) was eluted, and the obtained 1:20 components were purified by petroleum The compound Gymnoascolide A was obtained by recrystallization from ether-ethyl acetate.

[0075] 2. Experimental results

[0076] The yield of the compound Gymnoascolide A obtained in this ...

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Abstract

The invention discloses endophytic fungus Onygenales X117 of incarvillea younghusbandii sprague, and a preparation method and application of a fermented product of the endophytic fungus Onygenales X117. The endophytic fungus Onygenales X117 of the incarvillea younghusbandii Sprague is provided for the first time, and the nucleotide sequence of the ITS-rRNA gene of the endophytic fungus OnygenalesX117 is represented by SEQ ID NO. 1. The strain can produce a compound Gymnoscolide A through fermentation, thereby being an ideal carrier for developing novel natural drugs. The invention further provides a method for preparing the compound Gymnoscolide A by fermenting the strain. The method is simple, short in cycle, low in cost, energy saving and environmentally friendly. The high anti-inflammatory activity of compound Gymnoscolide A is discovered for the first time, and accordingly, the compound Gymnoscolide A has a good application prospect and a broad development space in preparation ofanti-inflammatory drugs.

Description

technical field [0001] The invention belongs to the field of biological technology, and more specifically relates to a preparation method and application of an endophytic fungus OnygenalesX117 of Zangboluo flower and its fermentation product. Background technique [0002] In 2005, a research group discovered Gymnoascolide A from two fungi, Gymnoascus reessii and Malbranchea filamentosa [Ben Clark, et al, J.Nat.Prod.2005,68 , 1226-1230; Tomoo Hosoe, et al, Phytochemistry 2005, 66, 2776–2779], and found that the compound moderately inhibited the high K + (60mM) or norepinephrine pretreated aortic ring Ca 2+ induced vasodilation. In 2011, it was found that Gymnoascolide A has the activity of inhibiting glycogen synthase kinase-3 (GSK-3β), which has potential value in the treatment of type 2 diabetes [Dirk Schulz, et al, J.Nat.Prod.2011, 74, 99–101 ]. There have been no reports about other biological activities of this compound, including the discovery of a series of derivat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/14C12P17/04C07D307/58A61K31/365A61P29/00C12R1/645
CPCC12P17/04C07D307/58A61K31/365A61P29/00C12R2001/645C12N1/145
Inventor 刘岚陈彬吴政儿陈森华李静林永成
Owner SUN YAT SEN UNIV