Biotechnology Bulletin ›› 2021, Vol. 37 ›› Issue (12): 227-234.doi: 10.13560/j.cnki.biotech.bull.1985.2021-0616

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Mechanism of Abnormal Chromosomal Segregation in Yeast Mitosis

WEI Wen-qing(), XIE Ze-xiong()   

  1. Frontier Science Center for Synthetic Biology,Key Laboratory of System Bioengineering(Ministry of Education),School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072
  • Received:2021-05-12 Online:2021-12-26 Published:2022-01-19
  • Contact: XIE Ze-xiong E-mail:wqwei@tju.edu.cn;xzx@tju.edu.cn

Abstract:

Mitosis is the basis of cell genetics,proliferation and development in eukaryotes. It is mainly divided into S phase and M phase,of which M phase is an important process of cell division and transmission of genetic material. The correct segregation of chromosome is highly regulated by a variety of cellular mechanisms,and is the key to ensuring the integrity of the genetic information of the offspring cells. This article mainly uses typical eukaryotic yeast cells as the research model,and reviews the specific mechanisms of abnormal chromosome segregation and aneuploidy formation in the yeast during mitosis. There are four aspects including failure of spindle assembly monitoring mechanism,sister chromatid adhesion protein defect,kinetochore-spindle microtubule binding error,and polycentric pathway. The effects of aneuploidy on the yeast cells are also discussed,aiming to better understand the physiological and genetic characteristics of aneuploidy yeast.

Key words: yeast, aneuploidy, abnormal chromosome segregation, mitosis