TY - JOUR
T1 - Bringing balance by force
T2 - Live cell extrusion controls epithelial cell numbers
AU - Eisenhoffer, George T.
AU - Rosenblatt, Jody
N1 - Funding Information:
The authors would like to thank members of the Rosenblatt laboratory for helpful discussions and Thomas Marshall for critical reading of the manuscript. This work was supported by an American Cancer Society Salt Lake City Postdoctoral Fellowship (120464-PF-11-095-01 CSM) to G.T.E. and NIH Director's New Innovator award DP2 OD002056-01 and 1R01GM102169-01 to J.R.
PY - 2013
Y1 - 2013
N2 - To function as an intact barrier, epithelia must maintain constant cell numbers despite high rates of turnover. If the rate of death exceeds proliferation, epithelial barrier function could become compromised; if it lags behind proliferation, cells could amass into tumors. Although the balance between cell death and division is critical for preventing pathology,most studies focus on each process in isolation. Loss of contact inhibition is a hallmark of cancer cells and has suggested that cell contacts are important for linking rates of cell division and death. However, epithelial cells continuously divide and die while maintaining contacts with each other, so other factors must control this balance. Recent studies have found that cell-crowding forces from cell proliferation can drive cells to die by extrusion from the epithelium. Factors thatalter thisresponsetocellcrowding mayleadtobarrier function diseases or promote hyperplasia and cancer.
AB - To function as an intact barrier, epithelia must maintain constant cell numbers despite high rates of turnover. If the rate of death exceeds proliferation, epithelial barrier function could become compromised; if it lags behind proliferation, cells could amass into tumors. Although the balance between cell death and division is critical for preventing pathology,most studies focus on each process in isolation. Loss of contact inhibition is a hallmark of cancer cells and has suggested that cell contacts are important for linking rates of cell division and death. However, epithelial cells continuously divide and die while maintaining contacts with each other, so other factors must control this balance. Recent studies have found that cell-crowding forces from cell proliferation can drive cells to die by extrusion from the epithelium. Factors thatalter thisresponsetocellcrowding mayleadtobarrier function diseases or promote hyperplasia and cancer.
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U2 - 10.1016/j.tcb.2012.11.006
DO - 10.1016/j.tcb.2012.11.006
M3 - Review article
C2 - 23273931
AN - SCOPUS:84884634586
SN - 0962-8924
VL - 23
SP - 185
EP - 192
JO - Trends in Cell Biology
JF - Trends in Cell Biology
IS - 4
ER -