구.추천논문
Jiyeon Kim1,*, Hyun Min Lee1, Feng Cai2, Bookyung Ko2, Chendong Yang2, Elizabeth L. Lieu1, Nefertiti Muhammad1, Shawn Rhyne1, Kailong Li 2, Mohamed Haloul1, Wen Gu2, Brandon Faubert 2, Akash K. Kaushik2, Ling Cai3, Sahba Kasiri4, Ummay Marriam4, Kien Nham5, Luc Girard4, Hui Wang6,14, Xiankai Sun5,7, James Kim4,8, John D. Minna4,9, Keziban Unsal-Kacmaz10,15 and Ralph J. DeBerardinis2,11,12,13 ,*
1Department of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, IL, USA. 2Children’s Medical Center Research Institute, UT Southwestern Medical Center, Dallas, TX, USA. 3Department of Population and Data Sciences, UT Southwestern Medical Center, Dallas, TX, USA. 4Hamon Center for Therapeutic Oncology Research, UT Southwestern Medical Center, Dallas, TX, USA. 5Department of Radiology, UT Southwestern Medical Center, Dallas, TX, USA. 6Oncology Research & Development, Pfizer Inc., San Diego, CA, USA. 7Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, TX, USA. 8Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA. 9Simmons Comprehensive Cancer Center, UT Southwestern Medical Center, Dallas, TX, USA. 10Oncology Research Unit, Pfizer Inc., Pearl River, NY, USA. 11Department of Pediatrics, UT Southwestern Medical Center, Dallas, TX, USA. 12McDermott Center for Human Growth and Development, UT Southwestern Medical Center, Dallas, TX, USA. 13Howard Hughes Medical Institute, UT Southwestern Medical Center, Dallas, TX, USA. 14Present address: Cancer Therapeutics Department, Genomics Institute of the Novartis Research Foundation, San Diego, CA, USA. 15Present address: Oncology Translational Development, Bristol Myers Squibb, Lawrenceville, NJ, USA.
*Correspondence to Jiyeon Kim or Ralph J. DeBerardinis.
Abstract
In non-small-cell lung cancer (NSCLC), concurrent mutations in the oncogene KRAS and the tumour suppressor STK11 (also known as LKB1) encoding the kinase LKB1 result in aggressive tumours prone to metastasis but with liabilities arising from reprogrammed metabolism. We previously demonstrated perturbed nitrogen metabolism and addiction to an unconventional pathway of pyrimidine synthesis in KRAS/LKB1 co-mutant cancer cells. To gain broader insight into metabolic reprogramming in NSCLC, we analysed tumour metabolomes in a series of genetically engineered mouse models with oncogenic KRAS combined with mutations in LKB1 or p53. Metabolomics and gene expression profiling pointed towards activation of the hexosamine biosynthesis pathway (HBP), another nitrogen-related metabolic pathway, in both mouse and human KRAS/LKB1 co-mutant tumours. KRAS/LKB1 co-mutant cells contain high levels of HBP metabolites, higher flux through the HBP pathway and elevated dependence on the HBP enzyme glutamine-fructose-6-phosphate transaminase [isomerizing] 2 (GFPT2). GFPT2 inhibition selectively reduced KRAS/LKB1 co-mutant tumour cell growth in culture, xenografts and genetically modified mice. Our results define a new metabolic vulnerability in KRAS/LKB1 co-mutant tumours and provide a rationale for targeting GFPT2 in this aggressive NSCLC subtype.
논문정보
관련 링크
연구자 키워드
관련분야 연구자보기
소속기관 논문보기
관련분야 논문보기
해당논문 저자보기