The effects of prolonged gravity vector randomization on differentiation of precursour cells in vitro.
It was shown that proliferative rate of human mesenchymal stem cells (hMSCs) decreased during gravity vector randomization (clinorotation). Clinorotated hMSCs exhibited changes in expression of some external cell markers and adhesion molecules. Marked suppression of osteogenic differentiation of hMSC as to formation of bone nodules and calcium deposits was observed. F-actin stress fibers of cytoskeleton were altered in clinorotated cultures. Prolonged clinorotation of embryoid bodies (EBs) resulted in a delay of embryonic stem cells (ESCs) differentiation into cardiomyocytes. Percentage of beating cardiomyocytes in each EB was significantly reduced. Thus, long-term gravity vector randomization decreases the differentiation processes of precursor cells in vitro.
Gershovich
J G
JG
Institute for Biomedical Problems RAS, 123007, Khoroshevskoye sh., 76-a, Moscow, Russia.
Konstantinova
N A
NA
Gershovich
P M
PM
Buravkova
L B
LB
D000199:Actins / Q000378:metabolism; D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D015703:Antigens, CD / Q000378:metabolism; D001854:Bone Marrow Cells / Q000276:immunology / Q000378:metabolism / Q000502:physiology*; D002118:Calcium / Q000378:metabolism; D002454:Cell Differentiation; D002460:Cell Line; D049109:Cell Proliferation; D002478:Cells, Cultured; D003599:Cytoskeleton / Q000378:metabolism; D053595:Embryonic Stem Cells / Q000502:physiology*; D015395:Histocompatibility Antigens Class I / Q000378:metabolism; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000276:immunology / Q000378:metabolism / Q000502:physiology*; D051379:Mice; D032383:Myocytes, Cardiac / Q000502:physiology*; D010012:Osteogenesis; D012399:Rotation; D013997:Time Factors
D000199:Actins; D015703:Antigens, CD; D015395:Histocompatibility Antigens Class I; D000469:Alkaline Phosphatase; D002118:Calcium