PKC抑制劑SP及激活劑PMA影響DEV增殖研究
[Abstract]:Duck enteritis virus (Duck enteritis virus), also known as duck plague virus (Duck plague virus), is one of the most important pathogens hindering the healthy development of duck industry. Previous laboratory studies have found that DEV nucleocapsid protein NP and its host cell receptor, the protein kinase C inhibitor (Protein kinase C, are the key molecules of the host cell phosphorylation pathway. Participate in the proliferation of many viruses. However, whether the phosphorylation pathway of host cells affects the process of DEV infection has not been reported. Therefore, the phosphorylation pathway of PKC classical inhibitor (SP) and specific activator (Phorbol-12-Eritrestate-13-acetatePMA) were used to study the role of phosphorylation pathway in DEV infection, in order to provide some new clues and ideas for elucidating the mechanism of DEV infection. Establishment of fluorescent quantitative PCR Detection method for Duck PKC Gene: according to the design and synthesis of specific primers of PKC gene on GenBank, the target gene fragment was obtained by PCR amplification from mRNA samples of (DEF) cells derived from duck embryo fibroblasts. The recombinant plasmid GV pXT19-T-PKC was constructed, and the fluorescent quantitative PCR detection method and standard curve were established by using GV pXT19-T-PKC as positive standard. Then the reproducibility, specificity and sensitivity were verified. The results showed that the linear relationship of the standard curve of fluorescence quantitative PCR was Y-3.3340x 44.199.The correlation coefficient was 0.9954, and the amplification efficiency was 99.19.The melting curve showed only a single specific peak, and no fluorescence signals were detected for the H5 subtype AIV-H7 subtype AIVH9 subtype AIVNV and DHV. The results showed that the fluorescent quantitative PCR method established in this study had good stability, specificity and sensitivity. 2.The effects of SP and PMA on the virulence of DEV were as follows: take DEV Guizhou virulent strain, inoculate DEF cells, measure TCID50 value, and culture into monolayer DEF cells. After treated with SP and PMA (concentration of 100nmol/L) for 4 h, a series of diluted DEV was added to incubate, observe and measure the change of TCID50 value, after treated with SP and PMA at different concentrations, DEF cells were incubated with 0.01MOI DEV. By observing and analyzing the change of virus TCID50 value, the results showed that the TCID50 value of Guizhou virulent strain was 3.16 脳 10 ~ (-9) / 0.1 mL. After SP treatment, the virus TCID50 value decreased with the increase of treatment concentration, but when the concentration reached 100nmol/L, the virus TCID50 value increased, and PMA treatment, At 20 to 50nmol/L, the virus TCID50 increased, but at 100 to 200nmol/L, the virus TCID50 decreased. This indicated that SP and PMA could affect the virulence of DEV, I. E. the proliferation of DEV and the effect of PMA on the transcription of PKCPKCI and DEV-NP genes: DEF cells were cultured into monolayer DEF cells, then infected with DEV after SP and PMA treatment, and then the cell cultures were collected. The transcriptional levels of PKCU PKCI and DEV-NP genes were detected by fluorescence quantitative PCR assay. The results showed that the transcriptional levels of PKCU PKCI and DEV-NP gene were 2.62 脳 109copies/ 渭 L 2.61 脳 102copies/ 渭 L and 6.65 脳 100copies/ 渭 L PMA-treated group, respectively, and were 3.92 脳 108copies/ 渭 L 5.24 脳 101copies/ 渭 L and 2.55 脳 108copies/ 渭 L, respectively, and 8.11 脳 106copies/ 渭 L 5.83 脳 101copies/ 渭 L and 2.74 脳 102copies/ 渭 L in the virus control group. The results showed that the transcriptional levels of PKCI gene and DEV-NP gene in the control group were 8.11 脳 106copies/ 渭 L 5.83 脳 101copies/ 渭 L and 2.74 脳 102copies/ 渭 L, respectively. This indicated that SP treatment could decrease the proliferation of DEV, while PMA treatment could increase the proliferation of DEV.
【學(xué)位授予單位】:貴州大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:S852.65
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