The effect of K(+) on caspase activity of corneal epithelial cells exposed to UVB.
The effect of K(+) on caspase activity of corneal epithelial cells exposed to UVB.
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DOI:
10.1016/j.exer.2016.07.014
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发表时间:
2016-10
影响因子:
3.4
通讯作者:
Ubels, John L.
中科院分区:
文献类型:
--
作者:
Leerar, John R.;Glupker, Courtney D.;Schotanus, Mark P.;Ubels, John L.
Exposure of human corneal limbal epithelial (HCLE) cells to UVB triggers rapid loss of K+ and apoptosis via activation of caspases-9, -8 and -3. It has been shown that preventing loss of intracellular K+ can inhibit apoptosis. The goal of this study was to investigate the effect of K+ on the UVB-induced caspase activity. HCLE cells were exposed to 150 mJ/cm2 UVB, followed by measurement of caspase activity in cell lysates. Caspase activity was measured in the presence and absence of 100 mM K+ in the reaction buffer. UVB-induced activity of caspases-9, -8 and -3 all decreased in the presence of 100 mM K+. These results suggest that a role of high [K+] in the cell is to inhibit caspase activity. Therefore, when cells lose K+ in response to UVB, caspases are activated and cells go into apoptosis. This supports our hypothesis that K+ inhibits caspase activity.
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影响因子:
2
作者:
Shimmura, S;Tadano, K;Tsubota, K
通讯作者:
Tsubota, K
影响因子:
3.4
作者:
Ubels, John L.;Van Dyken, Rachel E.;Haarsma, Loren D.
通讯作者:
Haarsma, Loren D.
影响因子:
3.4
作者:
Singleton, Katherine R.;Will, David S.;Ubels, John L.
通讯作者:
Ubels, John L.
影响因子:
4.8
作者:
Hughes, FM;Bortner, CD;Cidlowski, JA
通讯作者:
Cidlowski, JA
影响因子:
12.4
作者:
Inoue, S.;Browne, G.;Cohen, G. M.
通讯作者:
Cohen, G. M.