Centromeric Satellite DNAs: Hidden Sequence Variation in the Human Population.

Abstract:

:The central goal of medical genomics is to understand the inherited basis of sequence variation that underlies human physiology, evolution, and disease. Functional association studies currently ignore millions of bases that span each centromeric region and acrocentric short arm. These regions are enriched in long arrays of tandem repeats, or satellite DNAs, that are known to vary extensively in copy number and repeat structure in the human population. Satellite sequence variation in the human genome is often so large that it is detected cytogenetically, yet due to the lack of a reference assembly and informatics tools to measure this variability, contemporary high-resolution disease association studies are unable to detect causal variants in these regions. Nevertheless, recently uncovered associations between satellite DNA variation and human disease support that these regions present a substantial and biologically important fraction of human sequence variation. Therefore, there is a pressing and unmet need to detect and incorporate this uncharacterized sequence variation into broad studies of human evolution and medical genomics. Here I discuss the current knowledge of satellite DNA variation in the human genome, focusing on centromeric satellites and their potential implications for disease.

journal_name

Genes (Basel)

journal_title

Genes

authors

Miga KH

doi

10.3390/genes10050352

subject

Has Abstract

pub_date

2019-05-08 00:00:00

issue

5

issn

2073-4425

pii

genes10050352

journal_volume

10

pub_type

杂志文章,评审

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