目的:研究CCCTC位点结合蛋白(CTCF)对IgK基因重排的影响。方法:采用RNA干扰技术特异性地下调CTCF的表达,然后利用脂多糖(LPS)诱导祖B细胞(pro—Bcell)3889的分化。利用PCR来定量分析不同的VK基因hf24和VK2的重排情况。结果:CTCF在3889细胞中表达下调后hf24和VK21G。的重排都有所上升。结论:在pro—B细胞中CTCF对IgK基因的重排起抑制作用。
Objective: To investigate the role of CTCF in the rearrangement of IgK gene in pro-B cells. Methods: shRNA was used to knockdown CTCF in 38B9 cells. PCR was used to examine the rearrangement of hf24 and VK21G. Results: In 38B9 cells, rearrangement of hf24 and V K21G to J region increased after CTCF knockdown. Conclusion: CTCF represses the rearrangement of IgK gene in pro-B cells.