Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Small molecule peptides and their uses

A small-molecule polypeptide and amino acid technology, applied in the direction of peptides, medical preparations containing active ingredients, and decapeptides, can solve the problems of frequent occurrence of drug resistance, achieve good anti-parasitic activity, simple synthesis method, and easy structure Effect

Active Publication Date: 2020-07-17
安杰利(重庆)生物科技有限公司
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, there are few effective drugs against parasitic diseases, and drug resistance occurs frequently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A small molecular polypeptide, the amino acid sequence of the small molecular polypeptide is shown in SEQ ID No.1;

[0016] SEQ ID No. 1: AEDDCQQNEMPSTYVDDRNKFYYVSTWCQGHDD.

[0017] The isoelectric point of the small molecule polypeptide is 3.7.

[0018] The molecular weight of the small molecule polypeptide is 3961.17.

[0019] The preparation method of the small molecule polypeptide:

[0020] Select amino acid-king resin as the carrier (resin), fully swell the resin with dichloromethane, wash several times with dimethylformamide, use DBLK of appropriate concentration to remove the Fmoc-protecting group, and then use dimethylformamide to remove the Fmoc-protecting group. The amide was washed several times to remove DBLK, and the appropriate condensing agent benzotriazole-N,N,N',N'-tetramethyluronium hexafluorophosphate, the activator methylmorpholine and the C-terminal Two Fmoc-protected amino acids (Fmoc-Pro-OH) are coupled, detected by ninhydrin detection method t...

Embodiment 2

[0022] 1. Experimental method

[0023] Add 1mL concentration of 1×10 to a sterilized test tube 6 1 mg of the small molecule polypeptide provided by the present invention was added to each / mL bacterial liquid, and after culturing at 37°C for 24 hours, the culture medium was collected and diluted in multiples, the dilution factor was 10 times, and the number of viable bacteria was detected by the coating culture method.

[0024] 2. Experimental results:

[0025] Table 1 The bactericidal rate (%) of the small molecule polypeptide of the present invention

[0026] bacteria ATCC 6538 ATCC 25922 ATCC 10231 ATCC 9372 Sterilization rate 99.5％ 99.7％ 99.7％ 99.9％

[0027] As can be seen from Table 1, the small molecule polypeptide provided by the present invention is effective against Staphylococcus aureus (ATCC 6538), Escherichia coli (ATCC 25922), Candida albicans (ATCC 10231), Bacillus subtilis black variety (ATCC 9372) all have strong bactericidal pro...

Embodiment 3

[0029] The anti-parasitic activity of the products of the present invention was assessed using fluorescent cell sorting analysis (FACS) to quantify parasite cultures of erythrocytes. The polypeptide that embodiment 1 obtains is dissolved in 1ml DMSO, then with 25mmol / L 4-hydroxyethylpiperazineethanesulfonic acid buffer solution, 32mmol / L NaHCO 3 Dilute 200 times with RPMI 1640 cell culture medium prepared with 10% human plasma. The sample solution was subsequently prepared into 11 different concentrations by 2-fold dilution, 1ml, 2×10 6 / ml parasites were added to the solution and placed in 5% CO at 37°C 2 Cultivate in the incubator for 48h. Add 1ml of 3% diamidinophenylindole solution, incubate for another 18 hours, and measure the number of red blood cells with a fluorescent cell differential analyzer. The inhibition rate of different concentrations of samples against parasites can be obtained, and the IC can be calculated. 50 value.

[0030] The half effective concentra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses micromolecule polypeptide, wherein an amino acid sequence of the micromolecule polypeptide is shown by SEQ ID No.1. The invention also provides application of the micromoleculepolypeptide. The polypeptide disclosed by the invention has the advantages of anti-parasitic activity, antibacterial activity, strong stability, easy-control structure and obvious application potential.

Description

technical field [0001] The invention relates to a small molecule polypeptide. More specifically, the present invention relates to a small molecule polypeptide with antiparasitic and antibacterial activities. Background technique [0002] As a common disease, parasitic diseases have affected the health of people all over the world. For example, malaria has become a serious social problem in tropical and subtropical regions such as Africa, Asia, and Latin America. About 200 million people are infected with malaria every year, and more than half a million people die. Currently, there are not many effective drugs against parasitic diseases, and drug resistance occurs frequently. Therefore, it is extremely urgent to find new drugs for parasitic diseases. In particular, it is of great significance to find a drug that has both parasitic activity and other biological activities. Contents of the invention [0003] One object of the present invention is to provide a small molecul...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07K14/00A61K38/16A61P31/00A61P33/14
CPCA61K38/00C07K14/00
Inventor 李培源苏炜霍丽妮陈睿
Owner 安杰利(重庆)生物科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com