X‑chromosome loss rescues Sertoli cell maturation and spermatogenesis in Klinefelter syndrome

Sofia B. Winge, Niels E Skakkebæk, Lise Aksglaede, Gülizar Saritas, Ewa Rajpert-De Meyts, Anders Juul, Ellen Goossens, Kristian Almstrup

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2 Citations (Scopus)

Abstract

Klinefelter syndrome (47,XXY) causes infertility with a testicular histology comprising two types of Sertoli cell-only tubules, representing mature and immature-like Sertoli cells, and occasionally focal spermatogenesis. Here, we show that the immature-like Sertoli cells highly expressed XIST and had two X-chromosomes, while the mature Sertoli cells lacked XIST expression and had only one X-chromosome. Sertoli cells supporting focal spermatogenesis also lacked XIST expression and the additional X-chromosome, while the spermatogonia expressed XIST despite having only one X-chromosome. XIST was expressed in Sertoli cells until puberty, where a gradual loss was observed. Our results suggest that a micro-mosaic loss of the additional X-chromosome is needed for Sertoli cells to mature and to allow focal spermatogenesis.
Original languageEnglish
Article number396
Number of pages9
JournalCell & Death Disease
Volume15
DOIs
Publication statusPublished - 5 Jun 2024

Bibliographical note

Funding Information:
We thank the Novo Nordisk Foundation (grant no. NNF21OC0069913 to KA) for financial support. The authors have benefited from networking grants of COST Action CA20119 (ANDRONET) supported by European Cooperation in Science and Technology (www.cost.eu). The authors wish to acknowledge Lisa Leth Maroun and Svetlana Teplaia for assistance with the DNA FISH staining, and John E. Nielsen and Ana Ricci C. G. Nielsen for technical assistance with the IHC experiments. We also want to thank Professor Mikkel H. Schierup for helpful input to the manuscript.

Publisher Copyright:
© The Author(s) 2024.

Keywords

  • klinefelter syndrome
  • X chromosome loss
  • Sertoli cells
  • Spermatogenesis

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