Targeting Cellular Calcium Homeostasis to Prevent Cytokine-Mediated Beta Cell Death.
Targeting Cellular Calcium Homeostasis to Prevent Cytokine-Mediated Beta Cell Death.
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DOI:
10.1038/s41598-017-05935-4
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发表时间:
2017-07-17
影响因子:
4.6
通讯作者:
Urano F
中科院分区:
文献类型:
--
作者:
Clark AL;Kanekura K;Lavagnino Z;Spears LD;Abreu D;Mahadevan J;Yagi T;Semenkovich CF;Piston DW;Urano F
Pro-inflammatory cytokines are important mediators of islet inflammation, leading to beta cell death in type 1 diabetes. Although alterations in both endoplasmic reticulum (ER) and cytosolic free calcium levels are known to play a role in cytokine-mediated beta cell death, there are currently no treatments targeting cellular calcium homeostasis to combat type 1 diabetes. Here we show that modulation of cellular calcium homeostasis can mitigate cytokine- and ER stress-mediated beta cell death. The calcium modulating compounds, dantrolene and sitagliptin, both prevent cytokine and ER stress-induced activation of the pro-apoptotic calcium-dependent enzyme, calpain, and partly suppress beta cell death in INS1E cells and human primary islets. These agents are also able to restore cytokine-mediated suppression of functional ER calcium release. In addition, sitagliptin preserves function of the ER calcium pump, sarco-endoplasmic reticulum Ca2+-ATPase (SERCA), and decreases levels of the pro-apoptotic protein thioredoxin-interacting protein (TXNIP). Supporting the role of TXNIP in cytokine-mediated cell death, knock down of TXNIP in INS1-E cells prevents cytokine-mediated beta cell death. Our findings demonstrate that modulation of dynamic cellular calcium homeostasis and TXNIP suppression present viable pharmacologic targets to prevent cytokine-mediated beta cell loss in diabetes.
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影响因子:
29
作者:
Lerner AG;Upton JP;Praveen PV;Ghosh R;Nakagawa Y;Igbaria A;Shen S;Nguyen V;Backes BJ;Heiman M;Heintz N;Greengard P;Hui S;Tang Q;Trusina A;Oakes SA;Papa FR
通讯作者:
Papa FR
DOI:
10.1196/annals.1372.011
发表时间:
2006-01-01
期刊:
DIABETES MELLITUS AND ITS COMPLICATIONS
影响因子:
--
作者:
Harris, Frederick;Biswas, Suman;Phoenix, David A.
通讯作者:
Phoenix, David A.
影响因子:
7.7
作者:
Herold KC;Gitelman SE;Masharani U;Hagopian W;Bisikirska B;Donaldson D;Rother K;Diamond B;Harlan DM;Bluestone JA
通讯作者:
Bluestone JA
影响因子:
17.1
作者:
Engin F;Yermalovich A;Nguyen T;Hummasti S;Fu W;Eizirik DL;Mathis D;Hotamisligil GS
通讯作者:
Hotamisligil GS
影响因子:
4.8
作者:
Johnson, JD;Kuang, SH;Polonsky, KS
通讯作者:
Polonsky, KS