Genome-wide maps of histone modifications unwind in vivo chromatin states of the hair follicle lineage.
Genome-wide maps of histone modifications unwind in vivo chromatin states of the hair follicle lineage.
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DOI:
10.1016/j.stem.2011.07.015
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发表时间:
2011-09-02
期刊:
影响因子:
23.9
通讯作者:
Fuchs, Elaine
中科院分区:
文献类型:
--
作者:
Lien, Wen-Hui;Guo, Xingyi;Polak, Lisa;Lawton, Lee N.;Young, Richard A.;Zheng, Deyou;Fuchs, Elaine
Using mouse skin, where bountiful reservoirs of synchronized hair follicle stem cells (HF-SCs) fuel cycles of regeneration, we explore how adult SCs remodel chromatin in response to activating cues. By profiling global mRNA and chromatin changes in quiescent and activated HF-SCs and their committed, transit-amplifying (TA) progeny, we show that polycomb-group(PcG)-mediated H3K27-trimethylation features prominently in HF-lineage progression by mechanisms distinct from embryonic-SCs. In HF-SCs, PcG represses non-skin lineages and HF-differentiation. In TA-progeny, non-skin regulators remain PcG-repressed, HF-SC regulators acquire H3K27me3-marks and HF-lineage regulators lose them. Interestingly, genes poised in embryonic-SCs, active in HF-SCs and PcGrepressed in TA-progeny, encode not only key transcription factors, but also signaling regulators. We document their importance in balancing HF-SC quiescence, underscoring the power of chromatin mapping in dissecting SC behavior. Our findings explain how HF-SCs cycle through quiescent and activated states without losing stemness, and define roles for PcG-mediated repression in governing a fate switch irreversibly.
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影响因子:
23.9
作者:
Koche RP;Smith ZD;Adli M;Gu H;Ku M;Gnirke A;Bernstein BE;Meissner A
通讯作者:
Meissner A
影响因子:
64.5
作者:
Hsu YC;Pasolli HA;Fuchs E
通讯作者:
Fuchs E
影响因子:
10.5
作者:
Cole, Megan F.;Johnstone, Sarah E.;Young, Richard A.
通讯作者:
Young, Richard A.
影响因子:
64.5
作者:
Horsley, Valerie;Aliprantis, Antonios O.;Fuchs, Elaine
通讯作者:
Fuchs, Elaine
影响因子:
64.5
作者:
Marson A;Levine SS;Cole MF;Frampton GM;Brambrink T;Johnstone S;Guenther MG;Johnston WK;Wernig M;Newman J;Calabrese JM;Dennis LM;Volkert TL;Gupta S;Love J;Hannett N;Sharp PA;Bartel DP;Jaenisch R;Young RA
通讯作者:
Young RA