IGFBP-3 Regulates Mitochondrial Hyperfusion and Metabolic Activity in Ocular Surface Epithelia during Hyperosmolar Stress.
IGFBP-3 Regulates Mitochondrial Hyperfusion and Metabolic Activity in Ocular Surface Epithelia during Hyperosmolar Stress.
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DOI:
10.3390/ijms23074066
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发表时间:
2022-04-06
影响因子:
5.6
通讯作者:
中科院分区:
文献类型:
--
作者:
In the eye, hyperosmolarity of the precorneal tear film triggers inflammation and the development of dry eye disease (DED), a highly prevalent condition that causes depression and disability in severe forms. A member of the insulin-like growth factor (IGF) family, the IGF binding protein-3 (IGFBP-3), is a pleiotropic protein with known roles in growth downregulation and survival. IGFBP-3 exerts these effects by blocking IGF-1 activation of the type 1 IGF-receptor (IGF-1R). Here, we examined a new IGF-independent role for IGFBP-3 in the regulation of mitochondrial and metabolic activity in ocular surface epithelial cells subject to hyperosmolar stress and in a mouse model of DED. We found that hyperosmolar stress decreased IGFBP-3 expression in vitro and in vivo. Treatment with exogenous IGFBP-3 induced an early, transient shift in IGF-1R to mitochondria, followed by IGFBP-3 nuclear accumulation. IGFBP-3 nuclear accumulation increased protein translation, blocked the hyperosmolar-mediated decrease in oxidative phosphorylation through the induction of mitochondrial hyperfusion, and restored corneal health in vivo. These data indicate that IGFBP-3 acts a stress response protein in ocular surface epithelia subject to hyperosmolar stress. These findings may lead to the development of first-in-class therapeutics to treat eye diseases with underlying mitochondrial dysfunction.
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影响因子:
3.4
作者:
De Paiva, Cintia S.;Corrales, Rosa M.;Pfiugfelder, Stephen C.
通讯作者:
Pfiugfelder, Stephen C.
DOI:
10.1111/j.1440-1843.1996.tb00029.x
发表时间:
1996-09-01
期刊:
Respirology (Carlton, Vic.)
影响因子:
--
作者:
Anderson, S D
通讯作者:
Anderson, S D
影响因子:
6.9
作者:
Furuichi, S;Hashimoto, S;Horie, T
通讯作者:
Horie, T
影响因子:
4.8
作者:
Liu, BR;Lee, HY;Cohen, P
通讯作者:
Cohen, P
影响因子:
3.4
作者:
Li, DQ;Luo, LH;Pflugfelder, SC
通讯作者:
Pflugfelder, SC