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LncRNA00492 is required for marginal zone B-cell development
Immunology ( IF 4.9 ) Pub Date : 2021-08-26 , DOI: 10.1111/imm.13408
Faming Wang 1 , Dongya Cui 2, 3 , Qingyun Zhang 4 , Yingying Shao 4 , Baijiao Zheng 2, 3 , Liling Chen 2, 3 , Yao Luo 1 , Liudi Yuan 1, 4 , Demin Wang 5
Affiliation  

B-cell development undergoes a series of steps from the bone marrow to the secondary lymphoid organs. A defect in B-cell development can lead to immunodeficiency or malignant disorders, such as leukaemia or lymphoma. Long non-coding RNAs have been reported to act as important regulators of many pathological processes. However, very little is known regarding the role of lncRNAs during B-cell development and the regulation of their expression. In this study, we explored the expression and role of lncRNA Gme00492 in B-cell development. We observed that lnc00492 was highly expressed in B-cell development and primarily expressed in the nucleus. Lnc00492-deficient mice had fewer marginal zone B cells in the spleen, likely due to a developmental block. Importantly, lnc00492 interacts with CTBP1 and targets it for ubiquitination and degradation during B-cell development, whereas the transcriptional corepressor factor CTBP1 plays a critical role in Notch2 signalling. Thus, we identified a novel regulatory axis between lnc00492 and CTBP1 in B cells, suggesting that lnc00492 is essential for marginal zone B-cell development.

中文翻译:

边缘区 B 细胞发育需要 LncRNA00492

B 细胞的发育经历了从骨髓到次级淋巴器官的一系列步骤。B 细胞发育缺陷可导致免疫缺陷或恶性疾病,例如白血病或淋巴瘤。据报道,长链非编码 RNA 可作为许多病理过程的重要调节剂。然而,关于 lncRNA 在 B 细胞发育过程中的作用及其表达的调节知之甚少。在本研究中,我们探讨了 lncRNA Gme00492 在 B 细胞发育中的表达和作用。我们观察到lnc00492在B细胞发育中高度表达,主要在细胞核中表达。Lnc00492缺陷小鼠脾脏中的边缘区B细胞较少,可能是由于发育障碍。重要的,lnc00492 与 CTBP1 相互作用并在 B 细胞发育过程中靶向 CTBP1 进行泛素化和降解,而转录辅助抑制因子 CTBP1 在 Notch2 信号传导中起关键作用。因此,我们在 B 细胞中确定了 lnc00492 和 CTBP1 之间的新调节轴,表明 lnc00492 对边缘区 B 细胞发育至关重要。
更新日期:2021-08-26
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