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. 2013:4:1531.
doi: 10.1038/ncomms2517.

LGALS3BP regulates centriole biogenesis and centrosome hypertrophy in cancer cells

Marie-Laure Fogeron  1 , Hannah Müller, Sophia Schade, Felix Dreher, Verena Lehmann, Anne Kühnel, Anne-Kathrin Scholz, Karl Kashofer, Alexandra Zerck, Beatrix Fauler, Rudi Lurz, Ralf Herwig, Kurt Zatloukal, Hans Lehrach, Johan Gobom, Eckhard Nordhoff, Bodo M H Lange
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Free article

LGALS3BP regulates centriole biogenesis and centrosome hypertrophy in cancer cells

Marie-Laure Fogeron et al. Nat Commun. 2013.
Free article

Abstract

Centrosome morphology and number are frequently deregulated in cancer cells. Here, to identify factors that are functionally relevant for centrosome abnormalities in cancer cells, we established a protein-interaction network around 23 centrosomal and cell-cycle regulatory proteins, selecting the interacting proteins that are deregulated in cancer for further studies. One of these components, LGALS3BP, is a centriole- and basal body-associated protein with a dual role, triggering centrosome hypertrophy when overexpressed and causing accumulation of centriolar substructures when downregulated. The cancer cell line SK-BR-3 that overexpresses LGALS3BP exhibits hypertrophic centrosomes, whereas in seminoma tissues with low expression of LGALS3BP, supernumerary centriole-like structures are present. Centrosome hypertrophy is reversed by depleting LGALS3BP in cells endogenously overexpressing this protein, supporting a direct role in centrosome aberration. We propose that LGALS3BP suppresses assembly of centriolar substructures, and when depleted, causes accumulation of centriolar complexes comprising CPAP, acetylated tubulin and centrin.

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