Back to Journals » Drug Design, Development and Therapy » Volume 10

A triazole derivative elicits autophagic clearance of polyglutamine aggregation in neuronal cells

Authors Hsieh C, Lee L, Leong W, Yang T, Yao C, Fang K

Received 3 May 2016

Accepted for publication 15 June 2016

Published 14 September 2016 Volume 2016:10 Pages 2947—2957


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 5

Editor who approved publication: Prof. Dr. Wei Duan

Chang Heng Hsieh,1 Li-Ching Lee,1 Wai-Yin Leong,1 Tsai-Chen Yang,1 Ching-Fa Yao,2 Kang Fang1

1Department of Life Science, 2Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan

Abstract: Trinucleotide CAG repeat expansion in the coding region of genes has a propensity to form polyglutamine (polyQ) aggregates that contribute to neuronal disorders. Strategies in elevating autophagy to disintegrate the insoluble aggregates without injuring cells have become a major goal for therapy. In this work, a triazole derivative, OC-13, was found accelerating autophagic clearance of polyQ aggregation in human neuroblastoma cells following induction of the enhanced green fluorescence-conjugated chimeric protein that enclosed 79 polyQ repeats (Q79-EGFP). OC-13 accelerated autophagy development and removed nuclear Q79-EGFP aggregates. The increase of Beclin-1, turnover of LC3-I to LC3-II and degradation of p62 supported autophagy activation. Pretreatment of autophagy inhibitor, bafilomycin A1, not only suppressed autophagolysome fusion, but also impeded aggregate eradication. The study also showed that c-Jun N-terminal kinase/Beclin-1 pathway was activated during OC-13 treatment and c-Jun N-terminal kinase inhibitor impaired autophagy and final breakdown. Autophagic clearance of the insoluble aggregates demonstrated the feasibility of OC-13 in alleviating neuronal disorders because of expanded glutamine stretches.

autophagic flux, polyglutamine, aggregates clearance, triazole, JNK pathway, neuronal disorders, green fluorescence protein

 for this paper has been published

Creative Commons License This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at and incorporate the Creative Commons Attribution - Non Commercial (unported, v3.0) License. By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms.

Download Article [PDF]  View Full Text [HTML][Machine readable]