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Erschienen in: Irish Journal of Medical Science (1971 -) 4/2017

07.04.2017 | Original Article

High-mobility group box 1 regulates cytoprotective autophagy in a mouse spermatocyte cell line (GC-2spd) exposed to cadmium

verfasst von: Z. Ou, Y. Chen, X. Niu, W. He, B. Song, D. Fan, X. Sun

Erschienen in: Irish Journal of Medical Science (1971 -) | Ausgabe 4/2017

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Abstract

Background

Cadmium (Cd) is an environmental and industrial pollutant that induces a broad spectrum of toxicological effects, influences a variety of human organs, and is associated with poor semen quality and male infertility. Increasing evidence demonstrates that Cd induces testicular germ cell apoptosis in rodent animals. However, the specific effect of Cd exposure on autophagy in germ cells is poorly understood.

Methods

We investigate the role of high-mobility group box 1 protein (HMGB1), a ubiquitous nuclear protein, on Cd-evoked autophagy in a mouse spermatocyte cell line (GC-2spd).

Results

Our data have shown that autophagy was significantly elevated in GC-2spd cells exposed to Cd. Furthermore, there was a reduction in rapamycin (RAP)-mediated apoptosis. In addition, Cd exposure reduced cell viability, which is an effect that could be significantly inhibited by RAP treatment. These results indicate that autophagy appears to serve a positive function in reducing Cd-induced cytotoxicity. In addition, HMGB1 increased coincident with the processing of LC3-I to LC3-II. Thus, the upregulation of HMGB1 increases LC3-II levels.

Conclusions

Our data suggest that HMGB1-induced autophagy appears to act as a defense/survival mechanism against Cd cytotoxicity in GC-2spd cells.
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Metadaten
Titel
High-mobility group box 1 regulates cytoprotective autophagy in a mouse spermatocyte cell line (GC-2spd) exposed to cadmium
verfasst von
Z. Ou
Y. Chen
X. Niu
W. He
B. Song
D. Fan
X. Sun
Publikationsdatum
07.04.2017
Verlag
Springer London
Erschienen in
Irish Journal of Medical Science (1971 -) / Ausgabe 4/2017
Print ISSN: 0021-1265
Elektronische ISSN: 1863-4362
DOI
https://doi.org/10.1007/s11845-017-1595-y

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