title: LATS2 tumour specific mutations and down-regulation of the gene in non-small cell carcinoma.
abstract: LATS2 is a new member of the LATS tumour suppressor family. The human LATS2 gene is located at chromosome 13q11-12, a hot spot (67%) for loss of heterozygosity (LOH) in non-small cell lung cancer (NSCLC). We screened 129 non-small cell lung cancer samples and 13 lung cancer cell lines, initially for mutations in the LATS2 gene and subsequently for mutations in P53 and K-RAS genes. Either polymorphisms or mutations were identified in over 50 percent of analysed tumours. A novel missense mutation, S1073R, and a large deletion of 8 amino acids in the PAPA-repeat region were detected in 9 and 2 NSCLC tumours, respectively. Those mutations were not identified in the 13 lung cancer cell lines. Mutations were tumour specific and were absent from adjacent normal tissue and healthy controls. Down-regulation of the LATS2 gene was observed in most NSCLC tumours but was not related to any mutation or polymorphism. Tumours with a LATS2 mutation often also harbour a P53 but not K-RAS gene mutation and were mostly in an advanced stage of development, with regional lymph node involvement.
authors.affiliation: Department of Molecular Genetics, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia.
authors.forename: Mojca
authors.initials: M
authors.lastname: Strazisar
authors.forename: Vid
authors.initials: V
authors.lastname: Mlakar
authors.forename: Damjan
authors.initials: D
authors.lastname: Glavac
mesh_terms: D002289:Carcinoma, Non-Small-Cell Lung / Q000235:genetics* / Q000473:pathology / Q000503:physiopathology; D045744:Cell Line, Tumor; D002471:Cell Transformation, Neoplastic; D004252:DNA Mutational Analysis; D015536:Down-Regulation; D005260:Female; D016158:Genes, p53 / Q000235:genetics; D011905:Genes, ras / Q000235:genetics; D006801:Humans; D019656:Loss of Heterozygosity; D008168:Lung / Q000378:metabolism* / Q000473:pathology; D008175:Lung Neoplasms / Q000235:genetics* / Q000473:pathology / Q000503:physiopathology; D008297:Male; D009154:Mutation; D009367:Neoplasm Staging; D017346:Protein Serine-Threonine Kinases / Q000235:genetics* / Q000378:metabolism; D051736:Proto-Oncogene Proteins c-mdm2 / Q000235:genetics / Q000378:metabolism; D025521:Tumor Suppressor Proteins / Q000235:genetics* / Q000378:metabolism
chemical_list: D025521:Tumor Suppressor Proteins; C497206:MDM2 protein, human; D051736:Proto-Oncogene Proteins c-mdm2; C406449:LATS2 protein, human; D017346:Protein Serine-Threonine Kinases