Genomic loci mispositioning in Tmem120a knockout mice yields latent lipodystrophy.
Genomic loci mispositioning in Tmem120a knockout mice yields latent lipodystrophy.
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DOI:
10.1038/s41467-021-27869-2
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发表时间:
2022-01-13
影响因子:
16.6
通讯作者:
Schirmer EC
中科院分区:
文献类型:
--
作者:
Czapiewski R;Batrakou DG;de Las Heras JI;Carter RN;Sivakumar A;Sliwinska M;Dixon CR;Webb S;Lattanzi G;Morton NM;Schirmer EC
Little is known about how the observed fat-specific pattern of 3D-spatial genome organisation is established. Here we report that adipocyte-specific knockout of the gene encoding nuclear envelope transmembrane protein Tmem120a disrupts fat genome organisation, thus causing a lipodystrophy syndrome. Tmem120a deficiency broadly suppresses lipid metabolism pathway gene expression and induces myogenic gene expression by repositioning genes, enhancers and miRNA-encoding loci between the nuclear periphery and interior. Tmem120a−/− mice, particularly females, exhibit a lipodystrophy syndrome similar to human familial partial lipodystrophy FPLD2, with profound insulin resistance and metabolic defects that manifest upon exposure to an obesogenic diet. Interestingly, similar genome organisation defects occurred in cells from FPLD2 patients that harbour nuclear envelope protein encoding LMNA mutations. Our data indicate TMEM120A genome organisation functions affect many adipose functions and its loss may yield adiposity spectrum disorders, including a miRNA-based mechanism that could explain muscle hypertrophy in human lipodystrophy. Little is known how spatial genome organization is directed in fat; however, key proadipogenic genes reposition from the nuclear envelope (NE) to the interior during adipogenesis. Here the authors show that deletion of NE protein Tmem120a in adipocytes disrupts fat genome organization, which results in suppression of lipid metabolism pathways and induces myogenic gene expression.
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影响因子:
4.6
作者:
Byerly, Mardi S.;Simon, Jean;Porter, Tom E.
通讯作者:
Porter, Tom E.
DOI:
10.1210/jc.2016-2466
发表时间:
2016-12
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
作者:
Brown RJ;Araujo-Vilar D;Cheung PT;Dunger D;Garg A;Jack M;Mungai L;Oral EA;Patni N;Rother KI;von Schnurbein J;Sorkina E;Stanley T;Vigouroux C;Wabitsch M;Williams R;Yorifuji T
通讯作者:
Yorifuji T
影响因子:
5.6
作者:
Delic D;Eisele C;Schmid R;Luippold G;Mayoux E;Grempler R
通讯作者:
Grempler R
影响因子:
3.7
作者:
Comuzzie AG;Cole SA;Laston SL;Voruganti VS;Haack K;Gibbs RA;Butte NF
通讯作者:
Butte NF
影响因子:
4.6
作者:
Ballester M;Ramayo-Caldas Y;Revilla M;Corominas J;Castelló A;Estellé J;Fernández AI;Folch JM
通讯作者:
Folch JM