Functional genomic analysis of frataxin deficiency reveals tissue-specific alterations and identifies the PPARgamma pathway as a therapeutic target in Friedreich's ataxia.
Functional genomic analysis of frataxin deficiency reveals tissue-specific alterations and identifies the PPARgamma pathway as a therapeutic target in Friedreich's ataxia.
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Frataxin缺乏症的功能基因组分析揭示了组织特异性的改变,并将PPARGAMMA途径鉴定为弗里德里希共济失调的治疗靶标。
DOI:
10.1093/hmg/ddp183
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发表时间:
2009-07-01
影响因子:
3.5
通讯作者:
Geschwind DH
中科院分区:
文献类型:
--
作者:
Coppola G;Marmolino D;Lu D;Wang Q;Cnop M;Rai M;Acquaviva F;Cocozza S;Pandolfo M;Geschwind DH
Friedreich’s ataxia (FRDA), the most common inherited ataxia, is characterized by focal neurodegeneration, diabetes mellitus and life-threatening cardiomyopathy. Frataxin, which is significantly reduced in patients with this recessive disorder, is a mitochondrial iron-binding protein, but how its deficiency leads to neurodegeneration and metabolic derangements is not known. We performed microarray analysis of heart and skeletal muscle in a mouse model of frataxin deficiency, and found molecular evidence of increased lipogenesis in skeletal muscle, and alteration of fiber-type composition in heart, consistent with insulin resistance and cardiomyopathy, respectively. Since the peroxisome proliferator-activated receptor gamma (PPARγ) pathway is known to regulate both processes, we hypothesized that dysregulation of this pathway could play a key role in frataxin deficiency. We confirmed this by showing a coordinate dysregulation of the PPARγ coactivator Pgc1a and transcription factor Srebp1 in cellular and animal models of frataxin deficiency, and in cells from FRDA patients, who have marked insulin resistance. Finally, we show that genetic modulation of the PPARγ pathway affects frataxin levels in vitro, supporting PPARγ as a novel therapeutic target in FRDA.
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DOI:
10.1152/ajpheart.00313.2002
发表时间:
2002-10-01
影响因子:
4.8
作者:
Choi, KM;Zhong, Y;Matlib, MA
通讯作者:
Matlib, MA
DOI:
10.1073/pnas.96.20.11492
发表时间:
1999-09-28
影响因子:
11.1
作者:
Lodi, R;Cooper, JM;Schapira, AHV
通讯作者:
Schapira, AHV
影响因子:
7.7
作者:
Kanatani, Yukiko;Usui, Isao;Kobayashi, Masashi
通讯作者:
Kobayashi, Masashi
影响因子:
15.9
作者:
Finck, BN;Lehman, JJ;Kelly, DP
通讯作者:
Kelly, DP
影响因子:
64.5
作者:
Lin, JD;Wu, PH;Spiegelman, BM
通讯作者:
Spiegelman, BM