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Isolation of Sertoli Cells and Peritubular Cells from Rat Testes
Published on: February 8, 2016
Simvastatin protects Sertoli cells against cisplatin cytotoxicity through enhanced gap junction intercellular
Lingzhi Wang1, Jianxin Peng2, Huansen Huang1
1Department of Anaesthesia, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou 510260, P.R. China.
Abstract:
Cisplatin, an important chemotherapeutic agent against testicular germ cell cancer, induces testicular toxicity on Leydig and Sertoli cells, leading to serious side-effects such as azoospermia and infertility. In a previous study, it was found that simvastatin enhanced the sensitivity of Leydig tumor cells to chemotherapeutic toxicity through the enhancement of gap junction functions. In the present study, the effect of simvastatin on the sensitivity of normal Sertoli cells to cisplatin and the role of gap junctions in such effects was investigated. The results showed that, simvastatin attenuated cisplatin toxicity only when cells exhibited high-density culture where gap junctional formation was possible. When gap junction function was decreased by the gap junction inhibitor or by siRNA targeting connexin 43, the protective effect of simvastatin to cisplatin toxicity was substantially attenuated. Simvastatin also enhanced gap junction functions between Sertoli cells. This effect was mediated by the reduction of PKC-mediated connexin phosphorylation, thereby increasing connexin 43 membrane localization. Thus, simvastatin-induced enhancement of gap junction‑mediated intercellular communication attenuated cisplatin toxicity on Sertoli cells. This result indicated that enhancement of gap junction function by simvastatin may have bilateral beneficial effects on cisplatin‑based chemotherapy, enhancing cisplatin killing on cancer while ameliorating the reproduction toxicity.
Insights
Simvastatin protects normal Sertoli cells from cisplatin toxicity by enhancing gap junction communication. This finding suggests simvastatin could reduce chemotherapy side effects on male fertility.
Area of Science:
- Reproductive Toxicology
- Cellular Biology
- Pharmacology
Background:
- Cisplatin chemotherapy for testicular cancer causes significant reproductive toxicity, affecting Sertoli and Leydig cells.
- Previous research indicated simvastatin enhances Leydig tumor cell sensitivity to chemotherapy via gap junction modulation.
Purpose of the Study:
- To investigate simvastatin's effect on cisplatin toxicity in normal Sertoli cells.
- To determine the role of gap junctions in simvastatin's protective mechanism against cisplatin.
Main Methods:
- Utilized high-density Sertoli cell cultures to facilitate gap junction formation.
- Employed gap junction inhibitors and siRNA targeting connexin 43 to disrupt intercellular communication.
- Assessed simvastatin's impact on cisplatin-induced toxicity and gap junction function.
Main Results:
- Simvastatin attenuated cisplatin toxicity specifically in high-density cultures where gap junctions were present.
- Inhibition of gap junction function significantly reduced simvastatin's protective effect against cisplatin.
- Simvastatin enhanced Sertoli cell gap junction function by reducing PKC-mediated connexin 43 phosphorylation and increasing its membrane localization.
Conclusions:
- Simvastatin enhances gap junction-mediated intercellular communication in Sertoli cells.
- This enhanced communication confers protection against cisplatin-induced testicular toxicity.
- Simvastatin shows potential for dual benefit in chemotherapy: enhancing cancer cell killing and mitigating reproductive side effects.
