貉IgG克隆及Fc活性多肽功能分析
[Abstract]:In order to obtain the sequence of raccoon dog IgG antibody and analyze the function of its active polypeptide, the immunological foundation was established for the treatment of raccoon dog disease. In this study, the conserved gene of raccoon dog IgG was cloned by RTPCR, and the whole length of IgG was obtained by 3'RACE and overlap-PCR. The functional sites of Fc region were analyzed by on-line software. NTVSITCLVK (N10K), PSVYVLPPSQ (P10Q) and MSTAVSKCAT (NC). (negative control polypeptide) were synthesized by artificial synthesis of IgG-Fc region polypeptide NTVSITCLVK (N10K), PSVYVLPPSQ (P10Q) and negative control polypeptide MSTAVSKCAT (NC). The levels of cytokines (TNF- 偽, IL-1 尾, IL-6) in the supernatant were determined by co-culture of polypeptides with peripheral blood lymphocytes of mice at different concentrations for 18 h. It was found that when the mass concentration was 10mg/L, the levels of cytokines in the supernatant were determined. Polypeptide N10K can stimulate lymphocytes to secrete more TNF- 偽 (271.95ng/L) and IL-1 尾 (27.42ng/L), while polypeptide P10Q can stimulate lymphocytes to produce more IL-6 (35.51ng/L). In this study, IgG heavy chain nucleic acid sequences were cloned successfully, and the in vitro immunogenicity of IgG-Fc polypeptides P10Q and N10K on peripheral blood lymphocytes was preliminarily determined, which laid a foundation for the prevention and treatment of raccoon dog origin diseases in the future and for the study of DNA vaccine. The preparation of Fc biological adjuvant, polypeptide vaccine and monoclonal antibody provides experimental basis.
【作者單位】: 泰安市動(dòng)物衛(wèi)生監(jiān)督所;山東農(nóng)業(yè)大學(xué)動(dòng)物科技學(xué)院;肥城市畜牧獸醫(yī)局;煙臺(tái)市牟平區(qū)姜格莊街道畜牧獸醫(yī)站;山東省濱州畜牧獸醫(yī)研究院;
【基金】:山東省毛皮動(dòng)物創(chuàng)新團(tuán)隊(duì)濱州綜合試驗(yàn)站資助項(xiàng)目(SAT-180-011-15)
【分類(lèi)號(hào)】:S858.92
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