The GID ubiquitin ligase complex is a regulator of AMPK activity and organismal lifespan.

The GID ubiquitin ligase complex is a regulator of AMPK activity and organismal lifespan.
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DOI:
10.1080/15548627.2019.1695399
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发表时间:
2020-09
期刊:
影响因子:
13.3
通讯作者:
Pfirrmann T
Pfirrmann T
中科院分区:
生物学1区
文献类型:
--
作者:
Liu H;Ding J;Köhnlein K;Urban N;Ori A;Villavicencio-Lorini P;Walentek P;Klotz LO;Hollemann T;Pfirrmann T

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AMP 激活蛋白激酶 (AMPK) 通过感知细胞的代谢状态来调节细胞能量稳态。 AMPK 通过改变 AMP/ATP 水平以及通过 USP10 去除抑制性泛素残基而产生的磷酸化和去磷酸化来调节。在这种情况下,我们确定了 GID 复合物,一种进化上保守的泛素连接酶复合物 (E3),作为 AMPK 活性的负调节因子。我们的数据表明,GID 复合物以 AMPK 为目标进行泛素化,从而改变其活性。耗尽 GID 亚基的细胞模拟饥饿状态,如 AMPK 活性增加、巨自噬/自噬通量以及 MTOR 激活减少所示。一致地,秀丽隐杆线虫中的 gid 基因敲低会导致生物体寿命延长。这项研究可能有助于了解 2 型糖尿病和病态肥胖等代谢性疾病,并实施替代治疗方法来改变 AMPK 活性。 ACTB:肌动蛋白,β; ADP:二磷酸腺苷; AMP:单磷酸腺苷; AMPK:AMP 激活的蛋白激酶; ARMC8:犰狳重复包含8; ATP:三磷酸腺苷; BafA1:巴弗洛霉素A1; BCAA:支链氨基酸; BICC1:BicC家族RNA结合蛋白1; BSA:牛血清白蛋白; CAMKK2 激酶:钙/钙调蛋白依赖性蛋白激酶激酶 2,β; CHX:放线菌酮; DMEM:Dulbecco 改良的 Eagle 培养基; E1:泛素激活酶; E2:泛素结合酶; E3:泛素连接酶; ECAR:细胞外酸化率; FACS:荧光相关细胞分选仪; FBP1:果糖双磷酸酶1; FCCP:羰基氰-4(三氟甲氧基)苯腙; G6P:6-磷酸葡萄糖; GDP:二磷酸鸟苷; GFP:绿色荧光蛋白; GID:葡萄糖诱导的降解缺陷; GMP:单磷酸鸟苷; GTP:三磷酸鸟苷; HBP1:高迁移率族盒转录因子1; HPRT:次黄嘌呤鸟嘌呤磷酸核糖基转移酶; KO:击倒; LE:长时间曝光; MAEA:巨噬细胞成红细胞附着物; MAP1LC3B/LC3B:微管相关蛋白1轻链3β; MKLN1: 麝香蛋白 1; mRNA:信使RNA; MTOR:雷帕霉素的机制靶点; NES:标准化富集分数; OCR:耗氧率; PBS:磷酸盐缓冲盐水; PCK1:磷酸烯醇丙酮酸羧激酶 1,胞质; PCR:聚合酶链式反应; PFA:多聚甲醛; RANBP9:RAN结合蛋白9; RING:非常有趣的新基因; RMND5:减数分裂核分裂5同系物所必需的; RPS6:核糖体蛋白S6; RPTOR:MTOR 的调节相关蛋白,复合物 1; SE:短曝光; SEM:平均值的标准误差; SQSTM1/p62: 隔离体 1; TSC2:结节性硬化症2; TUBA4A:微管蛋白; TUBE:串联泛素结合实体; Ub:泛素; UPS:泛素蛋白酶体系统; WDR26:WD重复域26; WT:野生型。
The AMP-activated protein kinase (AMPK) regulates cellular energy homeostasis by sensing the metabolic status of the cell. AMPK is regulated by phosphorylation and dephosphorylation as a result of changing AMP/ATP levels and by removal of inhibitory ubiquitin residues by USP10. In this context, we identified the GID-complex, an evolutionarily conserved ubiquitin-ligase-complex (E3), as a negative regulator of AMPK activity. Our data show that the GID-complex targets AMPK for ubiquitination thereby altering its activity. Cells depleted of GID-subunits mimic a state of starvation as shown by increased AMPK activity and macroautophagic/autophagic flux as well as reduced MTOR activation. Consistently, gid-genes knockdown in C. elegans results in increased organismal lifespan. This study may contribute to understand metabolic disorders such as type 2 diabetes mellitus and morbid obesity and implements alternative therapeutic approaches to alter AMPK activity. ACTB: actin, beta; ADP: adenosine diphosphate; AMP: adenosine monophosphate; AMPK: AMP-activated protein kinase; ARMC8: armadillo repeat containing 8; ATP: adenosine triphosphate; BafA1: bafilomycin A1; BCAA: branched chain amino acid; BICC1: BicC family RNA binding protein 1; BSA: bovine serum albumin; CAMKK2 kinase: calcium/calmodulin dependent protein kinase kinase 2, beta; CHX: cycloheximide; DMEM: Dulbecco’s modified Eagle’s medium; E1: ubiquitin-activating enzyme; E2: ubiquitin-conjugating enzyme; E3: ubiquitin ligase; ECAR: extracellular acidification rate; FACS: fluorescent associated cell sorter; FBP1: fructose-bisphosphatase 1; FCCP: carbonyl cyanide-4 (trifluoromethoxy) phenylhydrazone; G6P: glucose-6-phosphate; GDP: guanosine diphosphate; GFP: green fluorescent protein; GID: glucose induced degradation deficient; GMP: guanosine monophosphate; GTP: guanosine triphosphate; HBP1: high mobility group box transcription factor 1; HPRT: hypoxanthine guanine phosphoribosyl transferase; KO: knock out; LE: long exposure; MAEA: macrophage erythroblast attacher; MAP1LC3B/LC3B: microtubule-associated protein 1 light chain 3 beta; MKLN1: muskelin 1; mRNA: messenger RNA; MTOR: mechanistic target of rapamycin; NES: normalized enrichment score; OCR: oxygen consumption rate; PBS: phosphate buffered saline; PCK1: phosphoenolpyruvate carboxykinase 1, cytosolic; PCR: polymerase chain reaction; PFA: paraformaldehyde; RANBP9: RAN binding protein 9; RING: really interesting new gene; RMND5: required for meiotic nuclear division5 homolog; RPS6: ribosomal protein S6; RPTOR: regulatory associated protein of MTOR, complex 1; SE: short exposure; SEM: standard error of the mean; SQSTM1/p62: sequestosome 1; TSC2: tuberous sclerosis complex 2; TUBA4A: tubulin; TUBE: tandem ubiquitin binding entities; Ub: ubiquitin; UPS: ubiquitin proteasome system; WDR26: WD repeat domain 26; WT: wild type.
DOI: 10.1038/nrneph.2016.108
发表时间: 2016-10
期刊: Nature reviews. Nephrology
影响因子: --
作者:
Fantus D;Rogers NM;Grahammer F;Huber TB;Thomson AW
通讯作者: Thomson AW
DOI: 10.7554/elife.35528
发表时间: 2018-06-18
期刊: eLife
影响因子: 7.7
作者:
Lampert F;Stafa D;Goga A;Soste MV;Gilberto S;Olieric N;Picotti P;Stoffel M;Peter M
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DOI: 10.1042/bj20080067
发表时间: 2008-04-15
影响因子: 4.1
作者:
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通讯作者: Alessi, Dario R.
DOI: 10.1021/pr101065j
发表时间: 2011-04-01
影响因子: 4.4
作者:
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通讯作者: Mann, Matthias
DOI: 10.1371/journal.pone.0075217
发表时间: 2013
期刊: PloS one
影响因子: 3.7
作者:
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