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Mad2 and spindle assembly checkpoint function during meiosis I in mammalian oocytes

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dc.contributor.authorHomer, H.A.es
dc.date.accessioned2011-06-30T12:03:19Z
dc.date.available2011-06-30T12:03:19Z
dc.date.issued2006
dc.description.abstractDuring mammalian mitosis, a proofreading network called the spindle assembly checkpoint (SAC) is indispensable for ensuring the fidelity of chromosome segregation. An inhibitory SAC signal is deputed to inhibits mitotic cell-cycle progression in response to misaligned chromosomes until such imperfections are rectified thereby ensuring equitable chromosome partitioning to daughter cells. Amongst the cast of SAC proteins, mitotic arrest deficient 2 (Mad2) plays a leading role in transducing the SAC signal. The aneuploidy and cancer predispositions of individuals who harbour genetic mutations in SAC genes emphasise the in vivo significance of this surveillance mechanism. In humans, congenital aneuploidies such as Down’s syndrome demonstrate an exponential increase with advancing female age. Although largely the result of female meiosis I errors, the molecular entities that succumb with age in oocytes remain elusive. Declining oocyte SAC function could plausibly contribute to such errors. Until recently however, convincing evidence for a functional SAC in mammalian oocytes during meiosis I was unforthcoming. Here I review the evidence regarding the SAC in female mammalian meiosis I and how our understanding of this system has evolved in recent years. This review will focus on Mad2 as this is the SAC protein that has been most comprehensively investigated.es
dc.formatapplication/pdfes
dc.format.extent14es
dc.identifier.issn0213-3911es
dc.identifier.urihttp://hdl.handle.net/10201/22689
dc.languageenges
dc.publisherMurcia : F. Hernándezes
dc.relation.ispartofHistology and histopathologyes
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectNosdisjunctiones
dc.subjectMammalses
dc.subject.other61 - Medicinaes
dc.titleMad2 and spindle assembly checkpoint function during meiosis I in mammalian oocyteses
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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Histology and histopathology Vol.21, nº 8 (2006)