Correlation Engine 2.0
Clear Search sequence regions

  • Aurora B (2)
  • Borealin (1)
  • Haspin (9)
  • kinesin (1)
  • male meiosis (2)
  • MCAK (1)
  • meiosis (1)
  • mitosis (1)
  • regulates (1)
  • SGO2 (1)
  • Sizes of these terms reflect their relevance to your search.

    Chromosome segregation requires that centromeres properly attach to spindle microtubules. This essential step regulates the accuracy of cell division and therefore must be precisely regulated. One of the main centromeric regulatory signaling pathways is the Haspin-H3T3ph-chromosomal passenger complex (CPC) cascade, which is responsible for the recruitment of the CPC to the centromeres. In mitosis, Haspin kinase phosphorylates histone H3 at threonine 3 (H3T3ph), an essential epigenetic mark that recruits the CPC, whose catalytic component is Aurora B kinase. However, the centromeric Haspin-H3T3ph-CPC pathway remains largely uncharacterized in mammalian male meiosis. We have analyzed Haspin functions by either its chemical inhibition in cultured spermatocytes using LDN-192960, or the ablation of Haspin gene in Haspin-/-. Our studies suggest that Haspin kinase activity is required for proper chromosome congression during both meiotic divisions and for the recruitment of Aurora B and kinesin MCAK to meiotic centromeres. However, the absence of H3T3ph histone mark does not alter Borealin and SGO2 centromeric localization. These results add new and relevant information regarding the regulation of the Haspin-H3T3ph-CPC pathway and centromere function during meiosis.© 2022. Published by The Company of Biologists Ltd.


    Berenguer I, P López-Jiménez, I Mena, A Viera, J Page, J González-Martínez, C Maestre, M Malumbres, J A Suja, R Gómez. Haspin participates in AURKB recruitment to centromeres and contributes to chromosome congression in male mouse meiosis. Journal of cell science. 2022 Jun 13

    PMID: 35694956

    View Full Text