Transcription factor Hoxb5 reprograms B cells into functional T lymphocytes.

Transcription factor Hoxb5 reprograms B cells into functional T lymphocytes.
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转录因子 Hoxb5 将 B 细胞重编程为功能性 T 淋巴细胞

DOI:
10.1038/s41590-018-0046-x
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发表时间:
2018-03
期刊:
影响因子:
30.5
通讯作者:
Wang J
Wang J
中科院分区:
医学1区
文献类型:
--
作者:
Zhang M;Dong Y;Hu F;Yang D;Zhao Q;Lv C;Wang Y;Xia C;Weng Q;Liu X;Li C;Zhou P;Wang T;Guan Y;Guo R;Liu L;Geng Y;Wu H;Du J;Hu Z;Xu S;Chen J;He A;Liu B;Wang D;Yang YG;Wang J

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B细胞谱系的主调节因子的缺失将B细胞重编程为T细胞。在此,我们发现转录因子Hoxb 5能够将前B细胞重编程为功能性早期T细胞谱系祖细胞,该转录因子Hoxb 5在未定型造血祖细胞中表达,但在定型为B细胞或T细胞谱系的细胞中不存在。这种重编程开始于骨髓,并在胸腺中完成,产生了T淋巴细胞,其转录组,分级分化,组织分布和免疫功能与其天然对应物非常相似。Hoxb 5抑制B细胞的“主基因”,激活T细胞的调节因子,并调节前B细胞中关键的染色质修饰剂,最终驱动B细胞命运向T细胞命运的转换。我们的研究结果提供了一个从头范式的功能性T细胞通过体内重编程的产生。
Deletion of master regulators of the B cell lineage reprograms B cells into T cells. Here we found that the transcription factor Hoxb5, which is expressed in uncommitted hematopoietic progenitor cells but is not present in cells committed to the B cell or T cell lineage, was able to reprogram pro-pre-B cells into functional early T cell lineage progenitors. This reprogramming started in the bone marrow and was completed in the thymus and gave rise to T lymphocytes with transcriptomes, hierarchical differentiation, tissue distribution and immunological functions that closely resembled those of their natural counterparts. Hoxb5 repressed B cell ‘master genes’, activated regulators of T cells and regulated crucial chromatin modifiers in pro-pre-B cells and ultimately drove the B cell fate–to–T cell fate conversion. Our results provide a de novo paradigm for the generation of functional T cells through reprogramming in vivo.
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