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INHIBITION OF PROLIFERATION OF CONTAMINATING FIBROBLASTS BY D-VALINE IN CULTURES OF SMOOTH MUSCLE CELLS FROM HUMAN MYOMETRIUM

✍ Scribed by Jarin Hongpaisan

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
588 KB
Volume
24
Category
Article
ISSN
1065-6995

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✦ Synopsis

Abstract

Replacement of L‐valine with D‐valine in a standard culture medium can selectively inhibit fibroblast proliferation. The aim of the present study was to investigate whether human myometrial cells cultured with D‐valine instead of L‐valine can survive and express their characteristics. Cultured cells (95–98%) maintain expression of the intermediate filament desmin, which is the specific marker for mature muscle cells. By transmission electron microscopy, the cells showed the general morphology of smooth muscle cells in culture. Oxytocin in serum‐free culture medium at 37°C (5min) caused a concentration‐dependent increase in cellular Na and total Ca, and a decrease in K content as determined by X‐ray microanalysis. The percentage of cells cultured with D‐valine responding to oxytocin stimulation was larger than that of cells cultured with L‐valine, suggesting less contamination of smooth muscle cells by fibroblasts in the presence of D‐valine. As shown by measurements with fura‐2, D‐valine‐cultured cells retained the characteristic increase in intracellular free Ca^2+^ions after oxytocin stimulation.

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