Aberrations in the centrosome number and structure can readily be detected at all stages of tumor progression and are considered hallmarks of cancer. Centrosome anomalies are closely linked to chromosome instability and, therefore, are proposed to be one of the driving events of tumor formation and progression. This concept, first posited by Boveri over 100 years ago, has been an area of interest to cancer researchers. We have now begun to understand the processes by which these numerical and structural anomalies may lead to cancer, and vice-versa: how key events that occur during carcinogenesis could lead to amplification of centrosomes. Despite the proliferative advantages that having extra centrosomes may confer, their presence can also lead to loss of essential genetic material as a result of segregational errors and cancer cells must deal with these deadly consequences. Here, we review recent advances in the current literature describing the mechanisms by which cancer cells amplify their centrosomes and the methods they employ to tolerate the presence of these anomalies, focusing particularly on centrosomal clustering.
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http://dx.doi.org/10.3390/cancers14020442 | DOI Listing |
Proc Natl Acad Sci U S A
December 2024
Department of Infectious Diseases and Pathobiology, Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, 3012 Bern, Switzerland.
Taxanes are frequently used anticancer drugs known to kill tumor cells by inducing mitotic aberrations and segregation defects. A defining feature of specific cancers, notably triple-negative breast cancer (TNBC) and particularly those deficient in BRCA1, is chromosomal instability (CIN). Here, we focused on understanding the mechanisms of docetaxel-induced cytotoxicity, especially in the context of BRCA1-deficient TNBC.
View Article and Find Full Text PDFCancer Metastasis Rev
November 2024
Brady Urological Institute, Johns Hopkins School of Medicine, Baltimore, MD, USA.
Centrosomes serve as microtubule-organizing organelles that function in spindle pole organization, cell cycle progression, and cilia formation. A non-canonical role of centrosomes that has gained traction in recent years is the ability to act as signal transduction centers. Centrosome amplification, which includes numerical and structural aberrations of centrosomes, is a candidate hallmark of cancer.
View Article and Find Full Text PDFSci Adv
November 2024
Armenise-Harvard Laboratory of Cell Division, Department of Cellular, Computational and Integrative Biology-CIBIO, University of Trento, Trento, Italy.
Centrosomes are membrane-less organelles that orchestrate a wide array of biological functions by acting as microtubule organizing centers. Here, we report that caspase-2-driven apoptosis is elicited in blood cells failing cytokinesis and that extra centrosomes are necessary to trigger this cell death. Activation of caspase-2 depends on the PIDDosome multi-protein complex, and priming of PIDD1 at extra centrosomes is necessary for pathway activation.
View Article and Find Full Text PDFNat Commun
October 2024
Institute for Developmental Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria.
Centrioles define centrosome structure and function. Deregulation of centriole numbers can cause developmental defects and cancer. The p53 tumor suppressor limits the growth of cells lacking or harboring additional centrosomes and can be engaged by the "mitotic surveillance" or the "PIDDosome pathway", respectively.
View Article and Find Full Text PDFEMBO Rep
October 2024
Institute for Developmental Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria.
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