Abstract
Direct and indirect, in vivo and in vitro observations are in accord with the hypothesis that as a consequence of their deformation within capillaries, cancer cells undergo sphere-to-cylinder shape-transformations that create a demand for increased surface area. When this demand cannot be met by apparent increases in surface area accomplished by nonlethal, surface “unfolding,” the cell surface membrane is stretched; if expansion results in more than a 4% increase in true surface area, the membrane ruptures, resulting in cancer cell death.
It is suggested that this deformation-driven process is an important factor in accounting for the rapid death of circulating cancer cells that have been trapped in the microvasculature. Therefore, this mechanism is thought to make a significant contribution to metastatic inefficiency by acting as a potent rate-regulator for hematogenous metastasis.
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Weiss, L. Deformation-Driven, lethal damage to cancer cells. Cell Biophysics 18, 73–79 (1991). https://doi.org/10.1007/BF02989807
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DOI: https://doi.org/10.1007/BF02989807