Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission Yeast

The regulation of telomere length has a significant impact on cancer risk and aging in humans. Circular chromosomes are found in humans and are often unstable during mitosis, resulting in genome instability. Some types of cancer have a high frequency of a circular chromosome. Fission yeast is a good...

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Main Author: Masaru Ueno
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Biomolecules
Subjects:
Online Access:https://www.mdpi.com/2218-273X/13/2/370
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author Masaru Ueno
author_facet Masaru Ueno
author_sort Masaru Ueno
collection DOAJ
description The regulation of telomere length has a significant impact on cancer risk and aging in humans. Circular chromosomes are found in humans and are often unstable during mitosis, resulting in genome instability. Some types of cancer have a high frequency of a circular chromosome. Fission yeast is a good model for studying the formation and stability of circular chromosomes as deletion of <i>pot1</i> (encoding a telomere protection protein) results in rapid telomere degradation and chromosome fusion. Pot1 binds to single-stranded telomere DNA and is conserved from fission yeast to humans. Loss of <i>pot1</i> leads to viable strains in which all three fission yeast chromosomes become circular. In this review, I will introduce <i>pot1</i> genetic interactions as these inform on processes such as the degradation of uncapped telomeres, chromosome fusion, and maintenance of circular chromosomes. Therefore, exploring genes that genetically interact with <i>pot1</i> contributes to finding new genes and/or new functions of genes related to the maintenance of telomeres and/or circular chromosomes.
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spelling doaj.art-44c201fcb8b14a859b68566ff563b9242023-11-16T19:24:15ZengMDPI AGBiomolecules2218-273X2023-02-0113237010.3390/biom13020370Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission YeastMasaru Ueno0Graduate School of Integrated Sciences for Life, Hiroshima University, Higashi-Hiroshima 739-8530, JapanThe regulation of telomere length has a significant impact on cancer risk and aging in humans. Circular chromosomes are found in humans and are often unstable during mitosis, resulting in genome instability. Some types of cancer have a high frequency of a circular chromosome. Fission yeast is a good model for studying the formation and stability of circular chromosomes as deletion of <i>pot1</i> (encoding a telomere protection protein) results in rapid telomere degradation and chromosome fusion. Pot1 binds to single-stranded telomere DNA and is conserved from fission yeast to humans. Loss of <i>pot1</i> leads to viable strains in which all three fission yeast chromosomes become circular. In this review, I will introduce <i>pot1</i> genetic interactions as these inform on processes such as the degradation of uncapped telomeres, chromosome fusion, and maintenance of circular chromosomes. Therefore, exploring genes that genetically interact with <i>pot1</i> contributes to finding new genes and/or new functions of genes related to the maintenance of telomeres and/or circular chromosomes.https://www.mdpi.com/2218-273X/13/2/370telomerering chromosomeDNA repairchromosome segregation
spellingShingle Masaru Ueno
Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission Yeast
Biomolecules
telomere
ring chromosome
DNA repair
chromosome segregation
title Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission Yeast
title_full Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission Yeast
title_fullStr Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission Yeast
title_full_unstemmed Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission Yeast
title_short Exploring Genetic Interactions with Telomere Protection Gene <i>pot1</i> in Fission Yeast
title_sort exploring genetic interactions with telomere protection gene i pot1 i in fission yeast
topic telomere
ring chromosome
DNA repair
chromosome segregation
url https://www.mdpi.com/2218-273X/13/2/370
work_keys_str_mv AT masaruueno exploringgeneticinteractionswithtelomereprotectiongeneipot1iinfissionyeast