Hyperglycemia exacerbates dengue virus infection by facilitating poly(A)-binding protein–mediated viral translation

Ting Jing Shen, Chia Ling Chen, Tsung Ting Tsai, Ming Kai Jhan, Chyi Huey Bai, Yu Chun Yen, Ching Wen Tsai, Cheng Yi Lee, Po Chun Tseng, Chia Yi Yu, Chiou Feng Lin

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5 引文 斯高帕斯(Scopus)

摘要

Diabetes mellitus (DM) is highly comorbid with severe dengue diseases; however, the underlying mechanisms are unclear. Patients with DM have a 1.61-fold increased risk of developing dengue hemorrhagic fever. In search of host factors involved in dengue virus (DENV) infection, we used high-glucose (HG) treatment and showed that HG increased viral protein expression and virion release but had no effects on the early stages of viral infection. After HG stimulation, DENV–firefly luciferase–transfected assay and cellular replicon–based assay indicated increased viral translation, whereas using the glucose uptake inhibitor phloretin blocked this effect. HG treatment increased the translational factor poly(A)-binding protein (PABP) in a glucose transporter–associated, PI3K/ AKT-regulated manner. Silencing PABP significantly decreased HG-prompted virion production. HG enhanced the formation of the PABP–eukaryotic translation initiation factor 4G complex, which is regulated by protein–disulfide isomerase. Hyperglycemia increased PABP expression, mortality rate, viral protein expression, and viral loads in streptozotocin-induced DM mice. Overall, hyperglycemic stress facilitates DENV infection by strengthening PABP-mediated viral translation.
原文英語
文章編號e142805
期刊JCI insight
7
發行號21
DOIs
出版狀態已發佈 - 11月 8 2022

ASJC Scopus subject areas

  • 一般醫學

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