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논문 기본 정보

자료유형
학술저널
저자정보
Boo Hye-Jin (Seoul National University) Min Hye-Young (Seoul National University) Hwang Su Jung (Sungkyunkwan University) Lee Hyo-Jong (Sungkyunkwan University) Lee Jae-Won (Korea Research Institute of Bioscience and Biotechnology) Oh Sei-Ryang (Korea Research Institute of Bioscience and Biotechnology) Park Choon-Sik (Soonchunhyang University Bucheon Hospital) Park Jong-Sook (Soonchunhyang University Bucheon Hospital) Lee You Mie (Kyungpook National University) Lee Ho-Young (Seoul National University)
저널정보
대한생화학·분자생물학회 Experimental and Molecular Medicine Experimental and Molecular Medicine 제55권
발행연도
2023.6
수록면
1,131 - 1,144 (14page)
DOI
10.1038/s12276-023-00994-2

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The renin-angiotensin (RA) system has been implicated in lung tumorigenesis without detailed mechanistic elucidation. Here, we demonstrate that exposure to the representative tobacco-specific carcinogen nitrosamine 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) promotes lung tumorigenesis through deregulation of the pulmonary RA system. Mechanistically, NNK binding to the nicotinic acetylcholine receptor (nAChR) induces Src-mediated signal transducer and activator of transcription 3 (STAT3) activation, resulting in transcriptional upregulation of angiotensinogen (AGT) and subsequent induction of the angiotensin II (AngII) receptor type 1 (AGTR1) signaling pathway. In parallel, NNK concurrently increases insulin-like growth factor 2 (IGF2) production and activation of IGF-1R/insulin receptor (IR) signaling via a two-step pathway involving transcriptional upregulation of IGF2 through STAT3 activation and enhanced secretion from intracellular storage through AngII/AGTR1/PLC-intervened calcium release. NNK-mediated crosstalk between IGF-1R/IR and AGTR1 signaling promoted tumorigenic activity in lung epithelial and stromal cells. Lung tumorigenesis caused by NNK exposure or alveolar type 2 cell-specific Src activation was suppressed by heterozygous Agt knockout or clinically available inhibitors of the nAChR/Src or AngII/AGTR1 pathways. These results demonstrate that NNK-induced stimulation of the lung RA system leads to IGF2-mediated IGF-1R/IR signaling activation in lung epithelial and stromal cells, resulting in lung tumorigenesis in smokers.

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