Evidence map›Paper›PMID 22375025›Full record

ArticleGenome research2012

Human postmeiotic sex chromatin and its impact on sex chromosome evolution.

Ho-Su Sin, Yosuke Ichijima, Eitetsu Koh, Mikio Namiki, Satoshi H Namekawa

Open access · bronzeAbstract read
In one paragraph

Article in Genome research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

33 citing papers in PubMed, 52 citations in OpenAlex.

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  19. Meiotic behaviour of evolutionary sex-autosome translocations in Bovidae.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2016
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 3 countries.

Ho-Su SinDivision of Reproductive Sciences, Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
Yosuke Ichijima
Eitetsu Koh
Mikio Namiki
Satoshi H Namekawa
Cincinnati Children's Hospital Medical Center · USKanazawa University · JP

Funding

DNA Damage Response Pathways in Meiotic Sex Chromosome InactivationR01GM098605 · NIGMS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI NAMEKAWA, SATOSHI · 2011 to 2020
$3.3M
NIGMS NIH HHS GM 098605NIGMS NIH HHS R01 GM098605
6 · The paper itself

Abstract

Sex chromosome inactivation is essential epigenetic programming in male germ cells. However, it remains largely unclear how epigenetic silencing of sex chromosomes impacts the evolution of the mammalian genome. Here we demonstrate that male sex chromosome inactivation is highly conserved between humans and mice and has an impact on the genetic evolution of human sex chromosomes. We show that, in humans, sex chromosome inactivation established during meiosis is maintained into spermatids with the silent compartment postmeiotic sex chromatin (PMSC). Human PMSC is illuminated with epigenetic modifications such as trimethylated lysine 9 of histone H3 and heterochromatin proteins CBX1 and CBX3, which implicate a conserved mechanism underlying the maintenance of sex chromosome inactivation in mammals. Furthermore, our analyses suggest that male sex chromosome inactivation has impacted multiple aspects of the evolutionary history of mammalian sex chromosomes: amplification of copy number, retrotranspositions, acquisition of de novo genes, and acquisition of different expression profiles. Most strikingly, profiles of escape genes from postmeiotic silencing diverge significantly between humans and mice. Escape genes exhibit higher rates of amino acid changes compared with non-escape genes, suggesting that they are beneficial for reproductive fitness and may allow mammals to cope with conserved postmeiotic silencing during the evolutionary past. Taken together, we propose that the epigenetic silencing mechanism impacts the genetic evolution of sex chromosomes and contributed to speciation and reproductive diversity in mammals.

Indexed as

Evolution, MolecularMeiosisAnimalsChromatinChromobox Protein Homolog 5Chromosomes, Human, YEpigenesis, GeneticGene DosageGene Expression ProfilingGenes, X-LinkedHumansMaleMiceOligonucleotide Array Sequence AnalysisSpermatogenesisSpermatogoniaCBX1 protein, humanChromatinChromobox Protein Homolog 5

Identifiers

PMID22375025
PMCPMC3337429
OpenAlexW2125508721

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.