PMID- 38054509 OWN - NLM STAT- MEDLINE DCOM- 20240320 LR - 20240320 IS - 1521-6551 (Electronic) IS - 1521-6543 (Linking) VI - 76 IP - 4 DP - 2024 Apr TI - Amino acid deprivation induces TXNIP expression by NRF2 downregulation. PG - 212-222 LID - 10.1002/iub.2792 [doi] AB - Thioredoxin-interacting protein (TXNIP) is sensitive to oxidative stress and is involved in the pathogenesis of various metabolic, cardiovascular, and neurodegenerative disorders. Therefore, several studies have suggested that TXNIP is a promising therapeutic target for several diseases, particularly cancer and diabetes. However, the regulation of TXNIP expression under amino acid (AA)-restricted conditions is not well understood. In the present study, we demonstrated that TXNIP expression was promoted by the deprivation of AAs, especially arginine, glutamine, lysine, and methionine, in non-small cell lung cancer (NSCLC) cells. Interestingly, we determined that increased TXNIP expression induced by AA deprivation was associated with nuclear factor erythroid 2-related factor 2 (NRF2) downregulation, but not with activating transcription factor 4 (ATF4) activation. Furthermore, N-acetyl-l-cysteine (NAC), a scavenger of reactive oxygen species (ROS), suppressed TXNIP expression in NSCLC cells deprived of AA. Collectively, the induction of TXNIP expression by AA deprivation was mediated by ROS production, potentially through NRF2 downregulation. Our findings suggest that TXNIP expression may be associated with the redox homeostasis of AA metabolism and provide a possible rationale for a therapeutic strategy to treat cancer with AA restriction. CI - (c) 2023 International Union of Biochemistry and Molecular Biology. FAU - Ahn, Se Hee AU - Ahn SH AD - Division of Fusion Radiology Research, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea. AD - Department of Biological Engineering, Konkuk University, Seoul, Republic of Korea. FAU - Jang, Se-Kyeong AU - Jang SK AD - Division of Fusion Radiology Research, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea. FAU - Kim, Yu Jin AU - Kim YJ AD - Division of Fusion Radiology Research, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea. AD - Department of Biological Engineering, Konkuk University, Seoul, Republic of Korea. FAU - Kim, Gyeongmi AU - Kim G AD - Division of Fusion Radiology Research, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea. FAU - Park, Ki Soo AU - Park KS AD - Department of Biological Engineering, Konkuk University, Seoul, Republic of Korea. FAU - Park, In-Chul AU - Park IC AD - Division of Fusion Radiology Research, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea. FAU - Jin, Hyeon-Ok AU - Jin HO AUID- ORCID: 0000-0002-1144-5991 AD - KIRAMS Radiation Biobank, Korea Institute of Radiological & Medical Sciences, Seoul, Republic of Korea. LA - eng GR - 50531-2023/Korea Institute of Radiological and Medical Sciences (KIRAMS), funded by the Ministry of Science and ICT (MSIT)/ GR - 50544-2023/Korea Institute of Radiological and Medical Sciences (KIRAMS), funded by the Ministry of Science and ICT (MSIT)/ GR - NRF-2022R1F1A1063450/National Research Foundation of Korea (NRF), funded by the MIST/ GR - NRF-2023R1A2C1003833/National Research Foundation of Korea (NRF), funded by the MIST/ PT - Journal Article DEP - 20231206 PL - England TA - IUBMB Life JT - IUBMB life JID - 100888706 RN - 0 (Reactive Oxygen Species) RN - 0 (NF-E2-Related Factor 2) RN - 0 (Amino Acids) RN - 0 (TXNIP protein, human) RN - 0 (Carrier Proteins) SB - IM MH - Humans MH - Reactive Oxygen Species/metabolism MH - NF-E2-Related Factor 2/genetics/metabolism MH - Amino Acids/metabolism MH - Down-Regulation MH - *Carcinoma, Non-Small-Cell Lung MH - *Lung Neoplasms MH - Carrier Proteins/genetics/metabolism OTO - NOTNLM OT - amino acid deprivation OT - non-small cell lung cancer OT - nuclear factor erythroid 2-related factor 2 OT - reactive oxygen species OT - thioredoxin-interacting protein EDAT- 2023/12/06 12:42 MHDA- 2024/03/20 06:45 CRDT- 2023/12/06 08:13 PHST- 2023/08/07 00:00 [received] PHST- 2023/11/06 00:00 [accepted] PHST- 2024/03/20 06:45 [medline] PHST- 2023/12/06 12:42 [pubmed] PHST- 2023/12/06 08:13 [entrez] AID - 10.1002/iub.2792 [doi] PST - ppublish SO - IUBMB Life. 2024 Apr;76(4):212-222. doi: 10.1002/iub.2792. Epub 2023 Dec 6.