TY - JOUR
T1 - Cellular signals converge at the NOX2-SHP-2 axis to induce reductive carboxylation in cancer cells
AU - Zhang, Rukang
AU - Chen, Dong
AU - Fan, Hao
AU - Wu, Rong
AU - Tu, Jiayi
AU - Zhang, Freya Q.
AU - Wang, Mei
AU - Zheng, Hong
AU - Qu, Cheng Kui
AU - Elf, Shannon E.
AU - Faubert, Brandon
AU - He, Yu Ying
AU - Bissonnette, Marc B.
AU - Gao, Xue
AU - DeBerardinis, Ralph J.
AU - Chen, Jing
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/7/21
Y1 - 2022/7/21
N2 - Environmental stresses, including hypoxia or detachment for anchorage independence, or attenuation of mitochondrial respiration through inhibition of electron transport chain induce reductive carboxylation in cells with an enhanced fraction of citrate arising through reductive metabolism of glutamine. This metabolic process contributes to redox homeostasis and sustains biosynthesis of lipids. Reductive carboxylation is often dependent on cytosolic isocitrate dehydrogenase 1 (IDH1). However, whether diverse cellular signals induce reductive carboxylation differentially or through a common signaling converging node remains unclear. We found that induction of reductive carboxylation commonly requires enhanced tyrosine phosphorylation and activation of IDH1, which, surprisingly, is achieved by attenuation of a cytosolic protein tyrosine phosphatase, Src homology region 2 domain-containing phosphatase-2 (SHP-2). Mechanistically, diverse signals induce reductive carboxylation by converging at upregulation of NADPH oxidase 2, leading to elevated cytosolic reactive oxygen species that consequently inhibit SHP-2. Together, our work elucidates the signaling basis underlying reductive carboxylation in cancer cells.
AB - Environmental stresses, including hypoxia or detachment for anchorage independence, or attenuation of mitochondrial respiration through inhibition of electron transport chain induce reductive carboxylation in cells with an enhanced fraction of citrate arising through reductive metabolism of glutamine. This metabolic process contributes to redox homeostasis and sustains biosynthesis of lipids. Reductive carboxylation is often dependent on cytosolic isocitrate dehydrogenase 1 (IDH1). However, whether diverse cellular signals induce reductive carboxylation differentially or through a common signaling converging node remains unclear. We found that induction of reductive carboxylation commonly requires enhanced tyrosine phosphorylation and activation of IDH1, which, surprisingly, is achieved by attenuation of a cytosolic protein tyrosine phosphatase, Src homology region 2 domain-containing phosphatase-2 (SHP-2). Mechanistically, diverse signals induce reductive carboxylation by converging at upregulation of NADPH oxidase 2, leading to elevated cytosolic reactive oxygen species that consequently inhibit SHP-2. Together, our work elucidates the signaling basis underlying reductive carboxylation in cancer cells.
KW - NADPH oxidase 2 (NOX2)
KW - Src homology region 2 domain-containing phosphatase-2 (SHP-2)
KW - cytosolic reactive oxygen species (ROS)
KW - isocitrate dehydrogenase 1 (IDH1)
KW - reductive carboxylation
KW - tyrosine phosphorylation
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U2 - 10.1016/j.chembiol.2022.03.010
DO - 10.1016/j.chembiol.2022.03.010
M3 - Article
C2 - 35429459
AN - SCOPUS:85134776527
SN - 2451-9456
VL - 29
SP - 1200-1208.e6
JO - Cell Chemical Biology
JF - Cell Chemical Biology
IS - 7
ER -