Effect of Laptm4b Deletion on Hematopoietic Stem and Progenitor Cells Homeostasis in Mice.
10.19746/j.cnki.issn.1009-2137.2021.05.040
- Author:
Yuan-Yuan ZHOU
1
;
Zhen-Kun WANG
1
;
Yong-Xiu HUANG
2
;
Xue-Mei FU
2
;
Xian-Li ZHANG
1
;
Yu HOU
2
;
Zhen-Yu JU
3
,
4
;
Bo LIU
4
,
5
Author Information
1. Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China.
2. The First Affiliated Hospital of Army Medical University, Chongqing 400038, China.
3. Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China,E-mail: zhenyuju@
4. com.
5. Institute of Aging and Regenerative Medicine, Jinan University, Guangzhou 510632, Guangdong Province, China,E-mail: ydqc_666@
- Publication Type:Journal Article
- MeSH:
Animals;
Cell Proliferation;
Flow Cytometry;
Hematopoietic Stem Cells;
Homeostasis;
Mice;
Transcription Factors
- From:
Journal of Experimental Hematology
2021;29(5):1623-1630
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To investigate the effect of lysosomal-associated protein transmembrane-4 Beta(Laptm4b) deletion on hematopoietic stem/progenitor cells (HSPCs) homeostasis in mice.
METHODS:The hematopoietic system specific Laptm4b-deficient mice were constructed. The number and proportion of HSPCs (LSK, LT, ST, MPP, etc) in Laptm4b-deficient mice were analyzed by flow cytometry. Single SLAM-HSC cell was sorted by flow sorter and cultured in vitro to measure the effect of Laptm4b deletion on the colony forming ability of hematopoietic stem cells (HSCs). The effect of Laptm4b-deficient on the reconstitution ability of HSCs in mice was detected by competitive transplantation experiment of SLAM-HSC cells.
RESULTS:Laptm4b deficiency could moderately upregulate the proportion of T cells in the peripheral blood of the mice, but showed no significant effect on the proportion and number of HSPCs. Laptm4b deletion showed no effect on the reconstruction ability of HSCs after competitive transplantation, but it could inhibit the colony formation of HSCs in vitro.
CONCLUSION:LAPTM4B may play a role in HSCs under the proliferation stress. Laptm4b-deficient in mice hematopoietic system showed no significant effect on the HSPCs homeostasis maintenance and reconstruction ability.
