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Retroviral Overexpression of CXCR4 on Murine B-1a Cells and Adoptive Transfer for Targeted B-1a Cell Migration to the Bone Marrow and IgM Production
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优化了用于激活初级小鼠B细胞的CUT&RUN协议.

Stormy E Ruiz1,2, Robert W Maul1, Patricia J Gearhart1

  • 1Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America.

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概括
此摘要是机器生成的。

经过修改的CUT&RUN技术使B淋巴细胞中高质量的染色质蛋白相互作用研究成为可能,克服了以前用于脆弱细胞类型的方法的局限性.

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科学领域:

  • 分子生物学分子生物学
  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
  • 免疫学 免疫学 免疫学

背景情况:

  • 染色体免疫沉测序 (ChIP-seq) 是研究染色体与蛋白质相互作用的标准.
  • 使用核酶 (CUT&RUN) 在目标下进行切割和释放,与ChIP-seq相比,具有优势,包括更高的信号质量和更少的样本要求.
  • 原来的CUT&RUN协议不适合脆弱的初级B淋巴细胞.

研究的目的:

  • 调整CUT&RUN协议,用于分析初级B淋巴细胞中的染色素蛋白相互作用.
  • 为了从有限数量的B单元中获取高质量的数据.
  • 为了有效量化B细胞中与DNA结合的非歇斯顿蛋白质.

主要方法:

  • 细胞在核隔离之前被固定.
  • 对CUT&RUN程序和B细胞兼容性的试剂进行了关键调整.
  • 测量了H3K4me3素和RNA聚合酶II的结合.

主要成果:

  • 经过修改的CUT&RUN协议检测到只有10万个核的强大峰值.
  • B细胞的冷解处理没有影响结果,这表明协议的灵活性.
  • 从激活的初级B淋巴细胞获得了高质量的数据.

结论:

  • 适应的CUT&RUN协议对于研究B淋巴细胞中的染色素蛋白相互作用是有效的.
  • 这种方法为分析有限的B细胞样本提供了比ChIP-seq更有效的替代方法.
  • 该协议允许量化B细胞中与DNA结合的非歇斯顿蛋白质.