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Preparation method and application of marine fungi aspergillus terreus butyrolactone compound butyrolactone-I

A technology of ester compounds and marine fungi, applied in the field of microorganisms, can solve the problems of high price, toxic and side effects, etc., and achieve the effects of simple method, increased yield and good application prospects

Inactive Publication Date: 2018-07-06
SHENZHEN INST OF GUANGDONG OCEAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing clinically used drugs for the treatment of Alzheimer's disease are mainly AChE inhibitors, including physostigmine, galantamine, huperzine A, rivastigmine, amsacrine, tacrine and piperidine donepezil etc. The drugs used to treat Parkinson's disease are mainly levodopa, amantadine, selegiline, etc. These drugs are expensive and have certain toxic and side effects except huperzine A

Method used

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  • Preparation method and application of marine fungi aspergillus terreus butyrolactone compound butyrolactone-I
  • Preparation method and application of marine fungi aspergillus terreus butyrolactone compound butyrolactone-I
  • Preparation method and application of marine fungi aspergillus terreus butyrolactone compound butyrolactone-I

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1 The preparation method of marine fungus Aspergillus terreus C23-3 butyrolactone compound butyrolactone-I

[0049] The present embodiment provides a kind of preparation method of butyrolactone-I, specifically as follows:

[0050] Fermentation: Aspergillus terreus ( Aspergillus terreus ) GDMCC No.60316 was inoculated in the fungal liquid culture medium and left to ferment for 18-25 days, filtered, and the mycelia and fermentation broth were collected respectively;

[0051]Wherein, the formula of described fungal liquid culture medium is:

[0052] Fresh potato juice 400-600mL, sea salt 15-25g, sucrose 15-25g, peptone 3-8g, distilled water 400-600mL, pH 6-8.

[0053] 2. Crude extraction: the fermentation broth obtained in step 1 was ultrasonically extracted 3 times with ethyl acetate and concentrated, the mycelium obtained in step 1 was ultrasonically extracted with methanol and concentrated under reduced pressure, and the obtained concentrates were combined to...

Embodiment 2

[0069] The free radical scavenging experiment of embodiment 2 butyrolactone-I

[0070] (1) Test method

[0071] DPPH free radical scavenging activity test: Vc was used as a positive control. Experimental group (A 1 ): Add different concentrations of monomeric compound NYY-1 (0.05-100 μM) in turn to a 96-well plate, dry it, add 50 μL each of DMSO and 0.16 mM DPPH solution in turn; the control group (A 2 ): use 50 μL methanol instead of 0.16 mM DPPH solution, the others are the same as the experimental group; blank group (A 3 ): no sample, other same as experimental group; blank control group (A 4 ): without adding samples, the others are the same as the control group. React in the dark for 30 min, and measure its absorbance at a wavelength of 517 nm. Use the origin software to make a clearance-concentration semi-logarithmic curve, and calculate its half-clearance concentration (EC 50 )value.

[0072]

[0073] ABTS free radical scavenging activity test: using the total...

Embodiment 3

[0079] Example 3 Determination of intracellular antioxidant and anti-inflammatory activities of butyrolactone-I

[0080] (1) Test method

[0081] Mouse microglial cells BV2 and macrophages RAW267.4 with good logarithmic phase growth were randomly divided into blank control group, LPS group, butyrolactone compound pretreatment+LPS group. The autotoxicity of butyrolactone-I to BV2 and RAW264.7 cells was evaluated by MTT method, the inhibitory effect of butyrolactone I on LPS-induced intracellular NO in BV2 and RAW264.7 cells was determined by Gress method, and the DCFH-DA fluorescent probe was used to detect butyrolactone-I. Inhibitory effect of lactone-I on LPS-induced ROS in BV-2 and RAW264.7 cells. Western blot was used to determine the effect of butyrolactone-I on the expression of iNOS and COX-2 proteins in RAW264.7 cells.

[0082] (2) Results

[0083] Such as Figure 3~Figure 5 As shown, the butyrolactone compound butyrolactone-I can protect cells from oxidative damage ...

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Abstract

The invention relates to a preparation method and application of a marine fungi aspergillus terreus butyrolactone compound butyrolactone-I. The invention discloses application of the marine fungi aspergillus terreus butyrolactone compound butyrolactone-I as shown in a formula (I) to preparation of medicaments for resisting to peripheral and neurogenic inflammation and resisting to neurodegenerative diseases. The formula is shown in the description. The invention finds that besides a DPPH free radical, butyrolactone-I can also well remove an ABTS free radical and an OH free radical; the marinefungi aspergillus terreus butyrolactone compound butyrolactone-I has better oxidation resistance and inflammation resistance and has better neuroprotection activity; therefore, the marine fungi aspergillus terreus butyrolactone compound butyrolactone-I has a wide application prospect in the aspect of preparing the medicaments for resisting to peripheral and neurogenic inflammation and resisting toneurodegenerative diseases. Meanwhile, by the preparation method of the butyrolactone-I, which is provided by the invention, the butyrolactone-I can be successfully prepared; the method is simple andeasy to realize large-scale production; culture conditions can also be optimized by addition of an inducer, so that yield of the butyrolactone-I is greatly improved.

Description

technical field [0001] The invention relates to the technical field of microorganisms, in particular to a preparation method and application of a marine fungus Aspergillus terreus butyrolactone compound butyrolactone-I. Background technique [0002] Neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's syndrome (PD) seriously threaten the physical and mental health of the elderly. The current research results show that their occurrence is closely related to oxidative stress and neuroinflammation. β-amyloid (Aβ), phosphorylated tubulin (Tau), accumulation of unbound iron, and metabolism of dopamine (DA), etc., can stimulate the generation of reactive oxygen species (ROS), cause oxidative stress, and damage nerves element, causing cognitive or motor dysfunction. The continuous activation of oxidative stress can further promote the aggregation and deposition of Aβ and phosphorylated Tau, as well as mitochondrial damage, which eventually lead to the occurr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K31/365A61P25/00A61P25/16A61P25/28C12P17/04C12R1/66
CPCC07D307/58C12P17/04
Inventor 张翼聂影影宋采千忠吉张永平雷晓凌李亚娟洪鹏志杨静明杨文聪冯妍
Owner SHENZHEN INST OF GUANGDONG OCEAN UNIV
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