應(yīng)用RNA干擾技術(shù)研究線蟲酪氨酸磷酸酶PTP-2的生物學(xué)功能
[Abstract]:SHP-2 is a non-transmembrane protein tyrosine phosphatase which exists in mammalian. It plays an important role in regulating many signal transduction processes and controlling cell activity. In order to study the biological function of SHP-2, (Caenorhabditis elegans) was selected as the model organism, and the function of PTP-2 (SHP-2 in nematode) was studied by RNA interference technique. Firstly, we designed and synthesized primers, amplified ptp-2 gene from cDNA library of nematode by PCR method, cloned it into expression vector pGex-2T, and obtained high expression in E-coli BL21codonplus pLysS. High purity GST-PTP-2 fusion protein was obtained by using preparation electrophoresis, and the fusion protein was immunized to rabbits, and a highly specific PTP-2 polyclonal antibody was obtained. Finally, on the basis of the above work, We used RNAi technique to interfere with the expression of ptp-2 gene in wild nematode. By studying the biological phenotype of nematode, we found that there were significant differences in longevity and abnormal death between the interference group and the control group. It is suggested that PTP-2 plays an important role in regulating the development of vagina muscle system of nematodes, and it is also involved in the regulation of signal transduction pathway related to longevity.
【學(xué)位授予單位】:吉林大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2007
【分類號】:R346
【共引文獻(xiàn)】
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