國家衛生研究院 NHRI:Item 3990099045/15656

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Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/15656

Title:	Mitochondrial ATP biogenesis regulated by vdac1 in tmem119+tumor-associated microglia and macrophages mediates high-grade glioma growth
Authors:	Wu, CR;Chen, YY;Lin, YJ;Wei, KC;Chang, KY;Feng, LY;Wu, AC;Chen, KT;Ren, AL;Nitta, R;Wu, J;Pant, A;Cho, KB;Mackall, C;Chuang, JY;Huang, CY;Li, G;Jackson, C;Chen, PY;Lim, M
Contributors:	National Institute of Cancer Research
Abstract:	Patients with high-grade glioma have a poor prognosis and an average survival of less than 15 months, which is associated with an increase in tumor-associated microglia and macrophages (TAMs). TAMs in the glioma microenvironment are traditionally thought to suppress antitumor immune responses and are metabolically reprogrammed by glioma. However, it is unknown whether metabolic processes, like ATP synthesis, in TAMs can directly affect glioma growth. Through RNAseq, we identified a novel subpopulation that had elevated metabolic expression patterns. These TAMs (TMEM119+) had increased protein expression of ATP synthases and VDAC1, and surprisingly only TAMs located within the tumor center had increased mitochondrial energy potential. In vitro and ex vivo co-culture assays determined that activated TAMs increased the expression of metabolic, growth, and survival genes in high-grade glioma cells. These activated TAMs produced higher levels of extracellular ATP, which in turn increased glioma cell viability. Inhibition studies identified P2X purinoceptor 7 (P2X7R) as a key player in the TAMs ATP-induced glioma survival. Our findings demonstrate for the first time that a subpopulation of TAMs induced a more tumorigenic microenvironment through the secretion of ATP.
Date:	2023-11
Relation:	Neuro-Oncology. 2023 Nov;25(Suppl. 5):v286.
Link to:	http://dx.doi.org/10.1093/neuonc/noad179.1104
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1522-8517&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:001115245401315
Appears in Collections:	[Kwang-Yu Chang] Conference Papers/Meeting Abstract

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