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The pathogenic human Torsin A in Drosophila activates the unfolded protein response and increases susceptibility to oxidative stress

Overview of attention for article published in BMC Genomics, April 2015
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Title
The pathogenic human Torsin A in Drosophila activates the unfolded protein response and increases susceptibility to oxidative stress
Published in
BMC Genomics, April 2015
DOI 10.1186/s12864-015-1518-0
Pubmed ID
Authors

A-Young Kim, Jong Bok Seo, Won-tae Kim, Hee Jeong Choi, Soo-Young Kim, Genevieve Morrow, Robert M Tanguay, Hermann Steller, Young Ho Koh

Abstract

Dystonia1 (DYT1) dystonia is caused by a glutamic acid deletion (ΔE) mutation in the gene encoding Torsin A in humans (HTorA). To investigate the unknown molecular and cellular mechanisms underlying DYT1 dystonia, we performed an unbiased proteomic analysis. We found that the amount of proteins and transcripts of an Endoplasmic reticulum (ER) resident chaperone Heat shock protein cognate 3 (HSC3) and a mitochondria chaperone Heat Shock Protein 22 (HSP22) were significantly increased in the HTorA(ΔE)- expressing brains compared to the normal HTorA (HTorA(WT)) expressing brains. The physiological consequences included an increased susceptibility to oxidative and ER stress compared to normal HTorA(WT) flies. The alteration of transcripts of Inositol-requiring enzyme-1 (IRE1)-dependent spliced X box binding protein 1(Xbp1), several ER chaperones, a nucleotide exchange factor, Autophagy related protein 8b (ATG8b) and components of the ER associated degradation (ERAD) pathway and increased expression of the Xbp1-enhanced Green Fluorescence Protein (eGFP) in HTorA(ΔE) brains strongly indicated the activation of the unfolded protein response (UPR). In addition, perturbed expression of the UPR sensors and inducers in the HTorA(ΔE) Drosophila brains resulted in a significantly reduced life span of the flies. Furthermore, the types and quantities of proteins present in the anti-HSC3 positive microsomes in the HTorA(ΔE) brains were different from those of the HTorA(WT) brains. Taken together, these data show that HTorA(ΔE) in Drosophila brains may activate the UPR and increase the expression of HSP22 to compensate for the toxic effects caused by HTorA(ΔE) in the brains.

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Geographical breakdown

Country Count As %
United States 1 3%
Korea, Republic of 1 3%
Belgium 1 3%
Unknown 37 93%

Demographic breakdown

Readers by professional status Count As %
Researcher 14 35%
Student > Ph. D. Student 7 18%
Student > Master 6 15%
Professor > Associate Professor 3 8%
Student > Bachelor 3 8%
Other 3 8%
Unknown 4 10%
Readers by discipline Count As %
Agricultural and Biological Sciences 14 35%
Biochemistry, Genetics and Molecular Biology 9 23%
Neuroscience 5 13%
Medicine and Dentistry 3 8%
Mathematics 1 3%
Other 2 5%
Unknown 6 15%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 17 May 2015.
All research outputs
#18,409,030
of 22,803,211 outputs
Outputs from BMC Genomics
#8,178
of 10,650 outputs
Outputs of similar age
#193,442
of 265,373 outputs
Outputs of similar age from BMC Genomics
#214
of 267 outputs
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