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Xist drives spatial compartmentalization of DNA and protein to orchestrate initiation and maintenance of X inactivation

Strehle, Mackenzie and Guttman, Mitchell (2020) Xist drives spatial compartmentalization of DNA and protein to orchestrate initiation and maintenance of X inactivation. Current Opinion in Cell Biology, 64 . pp. 139-147. ISSN 0955-0674. https://resolver.caltech.edu/CaltechAUTHORS:20200615-114647527

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Abstract

X chromosome inactivation (XCI) is the process whereby one of the X chromosomes in female mammalian cells is silenced to equalize X-linked gene expression with males. XCI depends on the long noncoding RNA Xist, which coats the inactive X chromosome in cis and triggers a cascade of events that ultimately lead to chromosome-wide transcriptional silencing that is stable for the lifetime of an organism. In recent years, the discovery of proteins that interact with Xist have led to new insights into how the initiation of XCI occurs. Nevertheless, there are still various unknowns about the mechanisms by which Xist orchestrates and maintains stable X-linked silencing. Here, we review recent work elucidating the role of Xist and its protein partners in mediating chromosome-wide transcriptional repression, as well as discuss a model by which Xist may compartmentalize proteins across the inactive X chromosome to enable both the initiation and maintenance of XCI.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.ceb.2020.04.009DOIArticle
ORCID:
AuthorORCID
Strehle, Mackenzie0000-0003-1410-8701
Guttman, Mitchell0000-0003-4748-9352
Additional Information:© 2020 Elsevier Ltd. Available online 11 June 2020. This review comes from a themed issue on Cell Nucleus; Edited by Andrew S Belmont and Megan C King. We thank J Jachowicz, A Chow, and S Hiley for manuscript comments, and IM Strazhnik for illustrations. This work was funded by the NIH 4DN Program (U01 DA040612 and U01 HL130007), New York Stem Cell Foundation (NYSCF-R-I13), Sontag Foundation, and funds from Caltech. M Guttman is an NYSCF-Robertson Investigator. Conflict of interest statement: Nothing declared.
Funders:
Funding AgencyGrant Number
NIHU01 DA040612
NIHU01 HL130007
New York Stem Cell FoundationNYSCF-R-I13
Sontag FoundationUNSPECIFIED
CaltechUNSPECIFIED
Subject Keywords:Xist; X chromosome inactivation; 3D structure; Nuclear structure; Chromatin regulation; Gene regulation; Epigenetics; Long noncoding RNA
Record Number:CaltechAUTHORS:20200615-114647527
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200615-114647527
Official Citation:Mackenzie Strehle, Mitchell Guttman, Xist drives spatial compartmentalization of DNA and protein to orchestrate initiation and maintenance of X inactivation, Current Opinion in Cell Biology, Volume 64, 2020, Pages 139-147, ISSN 0955-0674, https://doi.org/10.1016/j.ceb.2020.04.009. (http://www.sciencedirect.com/science/article/pii/S0955067420300557)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103921
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:15 Jun 2020 18:54
Last Modified:15 Jun 2020 18:54

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