Rapid molecular assays to study human centromere genomics.

Abstract:

:The centromere is the structural unit responsible for the faithful segregation of chromosomes. Although regulation of centromeric function by epigenetic factors has been well-studied, the contributions of the underlying DNA sequences have been much less well defined, and existing methodologies for studying centromere genomics in biology are laborious. We have identified specific markers in the centromere of 23 of the 24 human chromosomes that allow for rapid PCR assays capable of capturing the genomic landscape of human centromeres at a given time. Use of this genetic strategy can also delineate which specific centromere arrays in each chromosome drive the recruitment of epigenetic modulators. We further show that, surprisingly, loss and rearrangement of DNA in centromere 21 is associated with trisomy 21. This new approach can thus be used to rapidly take a snapshot of the genetics and epigenetics of each specific human centromere in nondisjunction disorders and other biological settings.

journal_name

Genome Res

journal_title

Genome research

authors

Contreras-Galindo R,Fischer S,Saha AK,Lundy JD,Cervantes PW,Mourad M,Wang C,Qian B,Dai M,Meng F,Chinnaiyan A,Omenn GS,Kaplan MH,Markovitz DM

doi

10.1101/gr.219709.116

subject

Has Abstract

pub_date

2017-12-01 00:00:00

pages

2040-2049

issue

12

eissn

1088-9051

issn

1549-5469

pii

gr.219709.116

journal_volume

27

pub_type

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