EMBO Molecular Medicine (Sep 2022)

A catalog of numerical centrosome defects in epithelial ovarian cancers

  • Jean‐Philippe Morretton,
  • Anthony Simon,
  • Aurélie Herbette,
  • Jorge Barbazan,
  • Carlos Pérez‐González,
  • Camille Cosson,
  • Bassirou Mboup,
  • Aurélien Latouche,
  • Tatiana Popova,
  • Yann Kieffer,
  • Anne‐Sophie Macé,
  • Pierre Gestraud,
  • Guillaume Bataillon,
  • Véronique Becette,
  • Didier Meseure,
  • André Nicolas,
  • Odette Mariani,
  • Anne Vincent‐Salomon,
  • Marc‐Henri Stern,
  • Fatima Mechta‐Grigoriou,
  • Sergio Roman Roman,
  • Danijela Matic Vignjevic,
  • Roman Rouzier,
  • Xavier Sastre‐Garau,
  • Oumou Goundiam,
  • Renata Basto

DOI
https://doi.org/10.15252/emmm.202215670
Journal volume & issue
Vol. 14, no. 9
pp. n/a – n/a

Abstract

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Abstract Centrosome amplification, the presence of more than two centrosomes in a cell is a common feature of most human cancer cell lines. However, little is known about centrosome numbers in human cancers and whether amplification or other numerical aberrations are frequently present. To address this question, we have analyzed a large cohort of primary human epithelial ovarian cancers (EOCs) from 100 patients. We found that rigorous quantitation of centrosome number in tumor samples was extremely challenging due to tumor heterogeneity and extensive tissue disorganization. Interestingly, even if centrosome clusters could be identified, the incidence of centrosome amplification was not comparable to what has been described in cultured cancer cells. Surprisingly, centrosome loss events where a few or many nuclei were not associated with centrosomes were clearly noticed and overall more frequent than centrosome amplification. Our findings highlight the difficulty of characterizing centrosome numbers in human tumors, while revealing a novel paradigm of centrosome number defects in EOCs.

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