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A method for studying the acetylation sites of autophagy-related proteins in mature adipocytes

A technology for mature adipocytes and autophagy-related proteins, applied in the field of wine formulation, can solve the problems of not determining whether adipocytes have acetylation modification, wasting researchers' precious time, reducing the reliability of experimental results, etc. Reliability, method reliability, accurate identification of effects

Active Publication Date: 2021-02-26
THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method for studying the acetylation sites of autophagy-related proteins in mature adipocytes, which solves the problem that most of the current research methods for the acetylation sites of autophagy-related proteins in adipocytes are directly on adipocytes. Staining treatment, and then observation through microscopes and other equipment, not only did not judge whether there is acetylation modification in fat cells, but also did not predict the acetylation site, resulting in too blind and easy to study the protein acetylation site. Waste valuable time of researchers while also reducing the issue of credibility of experimental results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]The identification of protein acetylation modification sites based on Thermo Company LTQ Orbitrap XL mass spectrometry data, the steps are:

[0050]In this example 1, the data format collected by the LTQ Orbitrap XL mass spectrometer is ".RAW", and the open source free software ProteoWizard can be used directly to convert the data into standard mgf format files, and then perform MASCOT and pFind database search and acetylation Relocation of modified sites, credibility evaluation and automatic batch export of spectra;

[0051]Using this example 1, the data collected by Thermo Company LTQ Orbitrap XL mass spectrometer was evaluated for acetylation sites, and high-confidence acetylation sites were also obtained, which effectively eliminated the false positive probability brought by database search software.

Embodiment 2

[0053]The experimental procedure of the correlation between protein acetylation and tumor development:

[0054]In this example 2, clinical samples of breast cancer patients were detected, and the results showed that hsp90 acetylated at K292 site in the tissues of cancer patients was significantly higher than the hsp90 acetylation level in normal tissues;

[0055]Similarly, the ack292-hsp90 antibody was used to detect hsp90 acetylation during tumor development in mice. MDA-MB-231 breast cancer cells cultured overnight in 10% FBS medium were digested and diluted to contain 2x107 cells / ml Cell suspension, Balb / c nude mice were inoculated with 2x106 MDA-MB-231 cells, two weeks after inoculation with tumor cells (the tumor was about 100mm3), mouse tumor samples were collected, and ack292-hsp90 antibody was used to detect hsp90 in mouse tumor samples The results show that the expression level of CDC37 and active CDC37 during the development of breast cancer does not change with the development ...

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Abstract

The invention discloses a method for researching autophagy-related protein acetylation sites in mature adipocytes, which relates to the technical field of wine formulations, and includes the following steps: Step 1, confirming that there is acetylation modification in autophagy-related protein A, first culturing fat cells, and induced them to differentiate into mature adipocytes, and then treated with sirtuin inhibitors. The research method of autophagy-related protein acetylation sites in mature adipocytes is to identify acetylation sites on the basis of prediction and obtain the specific position of acetylation modification sites. By relocating and evaluating acetylation modification sites, The identification of acetylation modification sites is more accurate and credible, which can greatly improve the credibility of the search results. Then, the function research of acetylation sites is carried out, and the research process is the way of virus infection, so it can be used in To a certain extent, the time consumed by research experiments is shortened, and the method is reliable and has good repeatability.

Description

Technical field[0001]The invention relates to the technical field of wine formulations, in particular to a method for studying acetylation sites of autophagy-related proteins in mature adipocytes.Background technique[0002]Protein acetylation is the process of adding acetyl groups to protein lysine residues under the action of acetyltransferase. It is a mechanism for cells to control gene expression, protein activity or physiological processes.[0003]Acetylation is a highly regulated protein post-translational modification necessary to ensure protein activity. It can occur in core histones, nearly 40 transcription factors and more than 30 other protein targets, from bacteria to humans, protein acetylation It not only plays a key role in nuclear function, but also plays an important role in regulating various cytoplasmic metabolism, including cytoskeleton dynamics, energy metabolism, endocytosis and autophagy, and even includes transmembrane signal conduction. The recognition of dots w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/62G01N33/68
Inventor 邓玉杰于清李成乾王小霞王萍闫志梅
Owner THE AFFILIATED HOSPITAL OF QINGDAO UNIV
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