Proliferative capacity of cell cultures derived from the human placenta |
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Authors: | R A Vincent P C Huang T H Parmley |
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Institution: | (1) Dept. of Biochemical and Biophysical Science, School of Hygiene and Public Health, The Johns Hopkins University, 615 North Wolfe St., 21205 Baltimore, Md.;(2) Department of Gynecology and Obstetrics, School of Medicine, The Johns Hopkins University, 21205 Baltimore, Maryland;(3) Present address: Pathology Department, Medical University of South Carolina, 29401 Charleston, S.C. |
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Abstract: | Summary The placenta consists largely of fetal tissue, yet at term it displays histological signs of deterioration not apparent in
the fetus. To determine whether the apparent degeneration of the placenta is genetically determined, the life-spans of placental
cell cultures and the proportion of placental cells capable of incorporating 3H]thymidine for replicative DNA synthesis in vitro were measured. Under the culture conditions employed, the placental cells
were removed from the influence of many extrinsic factors thought to play a role in the degeneration of the placenta in vivo.
Cultures of fibroblast-like cells derived from the placenta exhibited a reduced life-span and correspondingly reduced proportion
of cells able to incorporate 3H]thymidine for DNA synthesis in comparison to cultures derived from the fetal skin and the maternal decidua. These results
suggest that intrinsic cellular processes may be involved in the apparent degeneration of the placenta.
This work was supported by an NIH postdoctoral fellowship (R. A. V.) and grants from the National Institutes of Health, and
the National Foundation/March of Dimes. |
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Keywords: | proliferative capacity human placental cells in vitro life-span |
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