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
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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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