Chemotherapy induced damage to spermatogonial stem cells in prepubertal mouse in vitro impairs long-term

Federica Lopes1,2, Prathima Tholeti1,3, Satish K Adiga3

  • 1Biomedical Sciences, University of Edinburgh, Edinburgh, UK.

Toxicology Reports
|January 11, 2021
PubMed

Insights

Chemotherapy drugs like cisplatin and doxorubicin can harm young boys' fertility by damaging sperm development. This study used an in vitro model to show how these drugs affect spermatogonial stem cells and germ cell populations.

Area of Science:

  • Reproductive Biology
  • Developmental Biology
  • Toxicology

Background:

  • Chemotherapy poses a risk to testicular function and future fertility in young male cancer survivors.
  • Understanding the specific impact of individual chemotherapy agents on prepubertal testis development is crucial for fertility preservation strategies.
  • Experimental models are needed to assess drug-induced testicular damage and predict infertility risks.

Purpose of the Study:

  • To investigate the individual effects of cisplatin and doxorubicin on prepubertal mouse testis development.
  • To assess the impact of these chemotherapy drugs on spermatogonial stem cells (SSCs) and subsequent germ cell populations in vitro.
  • To evaluate the long-term consequences on spermatogenesis following acute chemotherapy exposure.

Main Methods:

  • Utilized an in vitro culture model of postnatal day 5 mouse testis.
  • Exposed testis fragments to clinically relevant doses of cisplatin or doxorubicin for 24 hours.
  • Quantified spermatogonial stem cells (SSCs), proliferating SSCs, total germ cells, and spermatocytes at various time points post-exposure.

Main Results:

  • Acute exposure to cisplatin and doxorubicin caused significant loss of SSCs, proliferating SSCs, total germ cells, and spermatocytes one week post-treatment.
  • While SSC numbers recovered, higher doses of cisplatin and both drugs reduced total germ cells and spermatocytes by weeks 4 and 8.
  • Reduced frequencies of round and elongated spermatids were observed in both cisplatin- and doxorubicin-treated testis fragments.

Conclusions:

  • Acute chemotherapy exposure during the prepubertal phase directly impairs germ cell development, primarily affecting spermatogonial stem cells.
  • The in vitro model successfully recapitulates key aspects of chemotherapy-induced testicular damage and spermatogenesis.
  • Findings highlight the potential for long-term fertility impairment due to chemotherapy in young males.