Telomerase activity of human bone marrow mesenchymal stem cells.
- Author:
Jing-yuan LI
1
;
Xiao-yu LA
;
Yi LUO
;
Jie SUN
;
Jian YU
;
Jian-ping LAN
;
Yuan-yuan ZHU
;
Ya-min TAN
;
Mao-fang LIN
;
He HUANG
Author Information
- Publication Type:Journal Article
- MeSH: Adipocytes; cytology; enzymology; Bone Marrow Cells; cytology; enzymology; Cell Differentiation; Cells, Cultured; Cryopreservation; Humans; Mesenchymal Stromal Cells; cytology; enzymology; Telomerase; metabolism
- From: Journal of Zhejiang University. Medical sciences 2004;33(6):481-485
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the telomerase activity in mesenchymal stem cells (hMSCs) from human bone marrow after their in vitro committed differentiation into adipocytes and cryopreservation.
METHODShMSCs were isolated from human bone marrow. The isolated hMSCs were induced to differentiate into adipocytes in vitro or cryopreserved. TRAP assay (telomerase repeat amplification protocol assay) was employed to detect telomerase activity in those hMSCs.
RESULTSTelomerase activity (RTA) in hMSCs (n=19) was (1.46 +/-0.67)%, while that in hMSCs-derived adipocytes (n=3) was (11.80 +/-2.52)% (P<0.001). RTA of hMSCs-passage 1.3 (n=10) was (1.46+/-0.83)%, and that of hMSCs-passage 4-7(n=9) was (1.46 +/-0.47)% (P=0.99). Cryopreservation did not affect the telomerase activity in hMSCs, RTA of fresh hMSCs (n=13) was (1.41 +/-0.44)%, RTA of frozen hMSCs (n=6) was (1.57 +/-1.07)% (P=0.64).
CONCLUSIONhMSCs are telomerase-negative, but telomerase activity in hMSCs-derived adipocytes is upregulated.
