A new vacuum-operated stress-providing instrument that applies static or variable duration cyclic tension or compression to cells in vitro

Document Type


Publication Date



An instrument providing cyclic stress to cells cultured in vitro has been developed. The unit uses a vacuum to deform a plastic Petri dish yielding 0·13 % compression to cells on the inner surface, measured by strain gauge recordings. A regimen of 25 s stress and 5 min relaxation induced no significant change in synthesis of a 45x103Mr protein that comigrates with actin, whereas a 52x103Mr protein that comigrated with tubulin decreased from 12·7 ± 0·451 % of the total protein synthesized in control, static cells to 8·53 ± 0·182% in stressed cells. The unit may have a broad application in monitoring biochemical changes in response to stress in cells such as muscle, lung, tendon, ligament and bone that are normally subjected to tension or compression.


The copy of record is available at http://jcs.biologists.org/content/joces/75/1/35.full.pdf. Copyright © 1985 by Company of Biologists. All rights reserved.