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High-throughput screening system and screening method for potential drugs targeting c-cbl protein ring functional domain

A technology of c-cbl and functional domains, which is applied in the field of high-throughput screening of potential drugs targeting the circular functional domain of c-Cbl protein, achieving good application prospects, low cost and high accuracy

Inactive Publication Date: 2016-01-20
CHENGDU MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when actually screening potential drugs acting on the target protein, it is very important to find ligands with high affinity to the target protein. At present, there is no high-throughput screening of potential drugs targeting the ring domain of c-Cbl protein. related reports

Method used

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  • High-throughput screening system and screening method for potential drugs targeting c-cbl protein ring functional domain
  • High-throughput screening system and screening method for potential drugs targeting c-cbl protein ring functional domain
  • High-throughput screening system and screening method for potential drugs targeting c-cbl protein ring functional domain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 Screening of Potential Drugs Targeting the c-Cbl Ring Domain Protein (c-Cbl Ring Domain Protein Ligand)

[0036]A mixture of FITC-P1 at a final concentration of 100 nM and a c-Cbl ring domain protein at a final concentration of 2 μM was prepared, and then this mixture was added to a 384-well plate at 19 μL / well. The unknown compound was dissolved in 20 μL DMSO to prepare a 200 μM stock solution, and the stock solution was diluted 7 times in half to obtain 8 different concentrations of the samples to be tested (the concentration range was 200 μM-1.56 μM). Add 1 μL / well of the sample to be tested into a 384-well plate (final concentration range 10 μM-0.08 μM). Shake the 384-well plate for 30 seconds before the test to fully mix the solution, and use the ZS-2 plate reader to read the polarized fluorescence value of the sample. The instrument should be set at Ex554 / Em575. Each concentration of each sample should be tested 3 times.

[0037] After the instrument ...

Embodiment 2

[0038] Example 2 Screening of potential drugs (c-Cbl ring domain protein ligands) targeting c-Cbl ring domain protein

[0039] A mixture of FITC-P2 at a final concentration of 100 nM and a c-Cbl ring domain protein at a final concentration of 2 μM was prepared, and then this mixture was added to a 384-well plate at 19 μL / well. The unknown compound was dissolved in 20 μL DMSO to prepare a 200 μM stock solution, and the stock solution was diluted 7 times in half to obtain 8 different concentrations of the samples to be tested (the concentration range was 200 μM-1.56 μM). Add 1 μL / well of the sample to be tested into a 384-well plate (final concentration range 10 μM-0.08 μM). Shake the 384-well plate for 30 seconds before the test to fully mix the solution, and use the ZS-2 plate reader to read the polarized fluorescence value of the sample. The instrument should be set at Ex554 / Em575. Each concentration of each sample should be tested 3 times.

[0040] After the instrument re...

Embodiment 3

[0041] Example 3 Screening of Potential Drugs Targeting the c-Cbl Ring Domain Protein (c-Cbl Ring Domain Protein Ligand)

[0042] A mixture of FITC-P3 at a final concentration of 100 nM and a c-Cbl ring domain protein at a final concentration of 2 μM was prepared, and then this mixture was added to a 384-well plate at 19 μL / well. The unknown compound was dissolved in 20 μL DMSO to prepare a 200 μM stock solution, and the stock solution was diluted 7 times in half to obtain 8 different concentrations of the samples to be tested (the concentration range was 200 μM-1.56 μM). Add 1 μL / well of the sample to be tested into a 384-well plate (final concentration range 10 μM-0.08 μM). Shake the 384-well plate for 30 seconds before the test to fully mix the solution, and use the ZS-2 plate reader to read the polarized fluorescence value of the sample. The instrument should be set at Ex554 / Em575. Each concentration of each sample should be tested 3 times.

[0043] After the instrument...

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Abstract

The invention discloses a polypeptide as shown in any one of SEQ (sequence) ID (identity) NO. 1-3. The invention further discloses a high-throughput screening system and method of potential medicaments taking c-Cbl protein cyclic functional regions as target points. The screening system comprises a fluorescence labeled peptide and a c-Cbl cyclic functional region protein, wherein the molar ratio of the fluorescence labeled peptide to the c-Cbl cyclic functional region protein is (1-2): (5-30), and the amino acid sequence of the peptide is as shown in any one of the SEQ ID NO. 1-3. The c-Cbl protein cyclic functional regions participate in energy balance regulation and control of organisms and are potential medicament target points for treating metabolic related diseases. According to the screening method disclosed by the invention, the potential medicaments taking the c-Cbl protein cyclic functional regions as the target points can be screened accurately and efficiently, a good foundation is laid for further screening the medicaments for treating the metabolic related diseases, and the industrial application prospects are great.

Description

technical field [0001] The invention relates to a high-throughput screening method for potential drugs targeting the ring functional domain of c-Cbl protein. Background technique [0002] Cbl (CasitasB-lineagelymphoma) protein is a kind of intracellular protein widely distributed in organisms, belonging to the ubiquitin ligase E3 series. c-Cbl is widely expressed in cells, but mainly exists in the cytoplasm. c-Cbl consists of a highly conserved N-terminal tyrosine kinase binding domain (TKB), a ring domain (RING), a proline-rich domain, and a C-terminal binding to ubiquitin (Ubiquitin-associated , UBA) domain and its overlapping leucine zipper domain. TKB and other functional domains in the c-Cbl molecule can recognize and bind target proteins, and the RING functional domain is responsible for recruiting ubiquitin-conjugating enzyme E2, thereby initiating the ubiquitin degradation pathway. c-Cbl participates in the negative regulation of intracellular signal transduction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07K7/06G01N21/64
Inventor 孙毅毅袁子雁谢兴亮林东
Owner CHENGDU MEDICAL COLLEGE