J 2022

Satellite DNAs and human sex chromosome variation

ČECHOVÁ, Monika and Karen H MIGA

Basic information

Original name

Satellite DNAs and human sex chromosome variation

Name in Czech

Satelitní DNA a variace lidských pohlavních chromosomů

Authors

ČECHOVÁ, Monika (203 Czech Republic, belonging to the institution) and Karen H MIGA (840 United States of America, guarantor)

Edition

SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY, LONDON, ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 2022, 1084-9521

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 7.300

RIV identification code

RIV/00216224:14330/22:00125958

Organization unit

Faculty of Informatics

UT WoS

000816909200003

Keywords (in Czech)

Satelitní DNA; Centroméra; Aneuploidie; X-inaktivace; Pohlavní chromosomy

Keywords in English

Satellite DNA; Centromere; Aneuploidy; X-inactivation; Sex chromosomes

Tags

International impact, Reviewed
Změněno: 28/3/2023 10:56, RNDr. Pavel Šmerk, Ph.D.

Abstract

V originále

Satellite DNAs are present on every chromosome in the cell and are typically enriched in repetitive, heterochromatic parts of the human genome. Sex chromosomes represent a unique genomic and epigenetic context. In this review, we first report what is known about satellite DNA biology on human X and Y chromosomes, including repeat content and organization, as well as satellite variation in typical euploid individuals. Then, we review sex chromosome aneuploidies that are among the most common types of aneuploidies in the general population, and are better tolerated than autosomal aneuploidies. This is demonstrated also by the fact that aging is associated with the loss of the X, and especially the Y chromosome. In addition, supernumerary sex chromosomes enable us to study general processes in a cell, such as analyzing heterochromatin dosage (i.e. additional Barr bodies and long heterochromatin arrays on Yq) and their downstream consequences. Finally, genomic and epigenetic organization and regulation of satellite DNA could influence chromosome stability and lead to aneuploidy. In this review, we argue that the complete annotation of satellite DNA on sex chromosomes in human, and especially in centromeric regions, will aid in explaining the prevalence and the consequences of sex chromosome aneuploidies.

In Czech

Review článek o satelitní DNA a variaci lidských pohlavních chromosomů