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Critical Reviews™ in Eukaryotic Gene Expression
インパクトファクター: 1.841 5年インパクトファクター: 1.927 SJR: 0.649 SNIP: 0.516 CiteScore™: 1.96

ISSN 印刷: 1045-4403
ISSN オンライン: 2162-6502

Critical Reviews™ in Eukaryotic Gene Expression

DOI: 10.1615/CritRevEukaryotGeneExpr.2018024601
pages 187-204

The Control of Meiotic Recombination in the Human Genome

Mahmut Cerkez Ergoren
Near East University, Faculty of Medicine, Department of Medical Biology, 99138, Nicosia, Cyprus; Near East University, Research Center of Experimental Health Sciences (DESAM), 99138, Nicosia, Cyprus

要約

Meiotic recombination plays a key role in reshuffling haplotypes in human populations and thus affects evolution profoundly. However, our understanding of recombination dynamics is largely limited to descriptions of variation in populations and families. Higher-resolution analysis (≤ 0.0001 cM) of de novo recombination events in human sperm DNA has revealed clustering into very narrow hotspots (1–2 kb) that generally coincide with abrupt breakdown of linkage disequilibrium. Recent findings have highlighted an unexpected molecular control of the distribution of meiotic double-strand breaks (DSBs) in mammals by a rapidly evolving gene in trans, PR-domain-containing 9 (PRDM9), and specific DNA sequence motifs in cis. In addition, the understanding of new regulators in DSB repair processes has allowed the delineation of recombination pathways that have two major outcomes, cross-overs and non-cross-overs, which have distinct mechanistic roles and consequences for genome evolution. Further molecular studies are needed to gain information about how hotspots originate, function, and evolve.

キーワード: hotspot, meiosis, diversity

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