Deletion of HO-1 blocks development of B lymphocytes in mice
- PMID: 31369826
- DOI: 10.1016/j.cellsig.2019.109378
Deletion of HO-1 blocks development of B lymphocytes in mice
Abstract
B lymphocytes, a key cluster of cells composing the immune system, can protect against abnormal biological factors. Heme oxygenase-1 (HO-1) plays important roles in cell proliferation and immune regulation, but its effects on the development and growth of B lymphocytes are still unknown. Herein, the count of B lymphocytes in HO-1 gene knockout (HO-1+/-) mice was significantly lower than that of the HO-1 gene wild-type (HO-1WT) mice. Meanwhile, the cell count of HO-1+/- mice did not recover after irradiation for one week, due to the G0/G1 phase arrest of Pro-B cells and the augmented apoptosis of Pre-B cells. Up-regulation of HO-1 by lentivirus attenuated the Pro-B cell cycle arrest and Pre-B cell apoptosis. To understand the molecular mechanism by which HO-1 knockout blocked B lymphocyte development, protein-to-protein interaction network and Western blot were used. The PI3K/AKT signaling pathway mediated the regulatory effects of HO-1 on B lymphocytes. In conclusion, HO-1 is a crucial transcriptional repressor for B cell development.
Keywords: B lymphocyte; Development; Gene knockout; Heme oxygenase-1; Mice.
Copyright © 2019. Published by Elsevier Inc.
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