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Differential Metabolic Reprogramming by Zika Virus Promotes Cell Death in Human versus Mosquito Cells by Shivani K. Thaker; Travis Chapa; Gustavo Garcia; Danyang Gong; Ernst W. Schmid; Vaithilingaraja Arumugaswami; Ren Sun; Heather R. Christofk is a Medicine article available to read on EtoBox.

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Zika virus is a pathogen that poses serious consequences, including congenital microcephaly. Although many viruses reprogram host cell metabolism, whether Zika virus alters cellular metabolism and the functional consequences of Zika-induced metabolic changes remain unknown. Here, we show that Zika virus infection differentially reprograms glucose metabolism in human versus C6/36 mosquito cells by increasing glucose use in the tricarboxylic acid cycle in human cells versus increasing glucose use in the pentose phosphate pathway in mosquito cells. Infection of human cells selectively depletes nucleotide triphosphate levels, leading to elevated AMP/ATP ratios, AMP-activated protein kinase (AMPK) phosphorylation, and caspase-mediated cell death. AMPK is also phosphorylated in Zika virus-infected mouse brain. Inhibiting AMPK in human cells decreases Zika virus-mediated cell death, whereas activating AMPK in mosquito cells promotes Zika virus-mediated cell death. These findings suggest that the differential metabolic reprogramming during Zika virus infection of human versus mosquito cells determines whether cell death occurs.

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Author

Shivani K. Thaker; Travis Chapa; Gustavo Garcia; Danyang Gong; Ernst W. Schmid; Vaithilingaraja Arumugaswami; Ren Sun; Heather R. Christofk

Publisher

Elsevier BV

Published

2019

Language

EN

Field

Medicine (Life Sciences)