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Function of the PLZF gene in early development and self-renewal of T cells in mice.

Abstract：

BACKGROUND/AIMS:The expression of transcription factor Zbtb1 is essential for the maintenance and development of various blood cells in the hematopoietic system. In the current study, we found that the total number of thymocytes in PLZF deficient mice was reduced compared with thymocytes in wild-type mice, and the number of early T-cell progenitors decreased. However, the decrease of thymocytes in PLZF deficient mice was not cell intrinsic. This study adds new information regarding the regulation of the PLZF gene in the development and self-renewal of T cells. METHODS:The thymus was isolated from newborn mice, and the two lobes of each thymus were physically separated. Each host received a thymus, two lobes, each placed at one end of the kidney, as described in the literature. Tail vein blood was periodically collected from some of the recipients and analyzed for the presence of peripheral blood T cells. RESULTS:In PLZF-EGFP reporter mice and neonatal thymus transplantation to the kidney, we found that PLZF was highly expressed in DN1 (Lineage-CD44+CD25-) cells of thymic grafts of Rag2/γc-/- recipient mice. We found that the proportion of PLZF wild-type and mutant-derived cells in the thymocytes of recipient mice after bone marrow transplantation is approximately equal to the competitive bone marrow chimeric mouse model, and all mice contain a normal thymus. CONCLUSION:The development of T cells suggests that the effect of the PLZF gene on T cell differentiation and development is not cell intrinsic. However, in the neonatal mouse thymic transplant model in the Rag2/γc-/- recipient mouse, deletion of the PLZF gene results in a significant decrease in the proportion of DN1 cells from the donor in the thymic graft.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Du JL,Cao X,Liu HY,Zeng Y,Yang XC,Wan XM,Chang FF,Zhao TY,Jia XY,Wang HZ,Liu J,Cai KZ,Ma ZR

doi

10.1016/j.bbrc.2019.02.156

subject

Has Abstract

pub_date

2019-04-16 00:00:00

pages

935-940

issue

4

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(19)30371-7

journal_volume

511

pub_type

杂志文章

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