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PTEN/MMAC1 mutations identified in small cell, but not in non-small cell lung cancers. 1998

A Yokomizo, and D J Tindall, and H Drabkin, and R Gemmill, and W Franklin, and P Yang, and K Sugio, and D I Smith, and W Liu
Department of Laboratory Medicine and Pathology, Mayo Foundation, Rochester, MN 55905, USA.

A putative tumor suppressor, PTEN/MMAC1 gene at 10q23 was recently identified and found to be mutated in many different human tumors. To determine the role of the PTEN/MMAC1 gene in lung cancer, we screened 34 small cell lung cancer (SCLC) cell lines, 10 SCLC tumors, 13 non-small cell lung cancer (NSCLC) cell lines and 10 NSCLC tumors using Denaturing HPLC (DHPLC) and direct sequencing methods. In SCLC, six (18%) of the cell lines and one of the primary tumor samples (10%) showed alterations of the PTEN/MMAC1 gene including point mutations, small fragment deletions, and homozygous deletions. All of the point mutations and small fragment deletions were observed in hemizygously deleted cell lines. In contrast to SCLC, none of the NSCLC tumors or cell lines had mutations in the PTEN/MMAC1 gene. These data indicate that PTEN/MMAC1 mutations contribute to the pathogenesis and neoplastic evolution in SCLC but not in NSCLC.

UI MeSH Term Description Entries
D008175 Lung Neoplasms Tumors or cancer of the LUNG. Cancer of Lung,Lung Cancer,Pulmonary Cancer,Pulmonary Neoplasms,Cancer of the Lung,Neoplasms, Lung,Neoplasms, Pulmonary,Cancer, Lung,Cancer, Pulmonary,Cancers, Lung,Cancers, Pulmonary,Lung Cancers,Lung Neoplasm,Neoplasm, Lung,Neoplasm, Pulmonary,Pulmonary Cancers,Pulmonary Neoplasm
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D010744 Phosphoric Monoester Hydrolases A group of hydrolases which catalyze the hydrolysis of monophosphoric esters with the production of one mole of orthophosphate. Phosphatase,Phosphatases,Phosphohydrolase,Phosphohydrolases,Phosphomonoesterase,Phosphomonoesterases,Phosphoric Monoester Hydrolase,Hydrolase, Phosphoric Monoester,Hydrolases, Phosphoric Monoester,Monoester Hydrolase, Phosphoric
D002289 Carcinoma, Non-Small-Cell Lung A heterogeneous aggregate of at least three distinct histological types of lung cancer, including SQUAMOUS CELL CARCINOMA; ADENOCARCINOMA; and LARGE CELL CARCINOMA. They are dealt with collectively because of their shared treatment strategy. Carcinoma, Non-Small Cell Lung,Non-Small Cell Lung Cancer,Non-Small Cell Lung Carcinoma,Non-Small-Cell Lung Carcinoma,Nonsmall Cell Lung Cancer,Carcinoma, Non Small Cell Lung,Carcinomas, Non-Small-Cell Lung,Lung Carcinoma, Non-Small-Cell,Lung Carcinomas, Non-Small-Cell,Non Small Cell Lung Carcinoma,Non-Small-Cell Lung Carcinomas
D005091 Exons The parts of a transcript of a split GENE remaining after the INTRONS are removed. They are spliced together to become a MESSENGER RNA or other functional RNA. Mini-Exon,Exon,Mini Exon,Mini-Exons
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012326 RNA Splicing The ultimate exclusion of nonsense sequences or intervening sequences (introns) before the final RNA transcript is sent to the cytoplasm. RNA, Messenger, Splicing,Splicing, RNA,RNA Splicings,Splicings, RNA
D014407 Tumor Cells, Cultured Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely. Cultured Tumor Cells,Neoplastic Cells, Cultured,Cultured Neoplastic Cells,Cell, Cultured Neoplastic,Cell, Cultured Tumor,Cells, Cultured Neoplastic,Cells, Cultured Tumor,Cultured Neoplastic Cell,Cultured Tumor Cell,Neoplastic Cell, Cultured,Tumor Cell, Cultured
D016147 Genes, Tumor Suppressor Genes that inhibit expression of the tumorigenic phenotype. They are normally involved in holding cellular growth in check. When tumor suppressor genes are inactivated or lost, a barrier to normal proliferation is removed and unregulated growth is possible. Antioncogenes,Cancer Suppressor Genes,Emerogenes,Genes, Cancer Suppressor,Genes, Growth Suppressor,Genes, Metastasis Suppressor,Growth Suppressor Genes,Metastasis Suppressor Genes,Tumor Suppressor Genes,Anti-Oncogenes,Genes, Onco-Suppressor,Oncogenes, Recessive,Tumor Suppressing Genes,Anti Oncogenes,Anti-Oncogene,Antioncogene,Cancer Suppressor Gene,Emerogene,Gene, Cancer Suppressor,Gene, Growth Suppressor,Gene, Metastasis Suppressor,Gene, Onco-Suppressor,Gene, Tumor Suppressing,Gene, Tumor Suppressor,Genes, Onco Suppressor,Genes, Tumor Suppressing,Growth Suppressor Gene,Metastasis Suppressor Gene,Onco-Suppressor Gene,Onco-Suppressor Genes,Oncogene, Recessive,Recessive Oncogene,Recessive Oncogenes,Suppressor Gene, Cancer,Suppressor Gene, Growth,Suppressor Gene, Metastasis,Suppressor Genes, Cancer,Suppressor Genes, Growth,Suppressor Genes, Metastasis,Tumor Suppressing Gene,Tumor Suppressor Gene
D017027 Protein Tyrosine Phosphatases An enzyme group that specifically dephosphorylates phosphotyrosyl residues in selected proteins. Together with PROTEIN-TYROSINE KINASE, it regulates tyrosine phosphorylation and dephosphorylation in cellular signal transduction and may play a role in cell growth control and carcinogenesis. Phosphotyrosine Phosphatase,Protein-Tyrosine-Phosphatase,Tyrosyl Phosphoprotein Phosphatase,PTPase,Phosphotyrosyl Protein Phosphatase,Protein-Tyrosine Phosphatase,Phosphatase, Phosphotyrosine,Phosphatase, Phosphotyrosyl Protein,Phosphatase, Protein-Tyrosine,Phosphatase, Tyrosyl Phosphoprotein,Phosphatases, Protein Tyrosine,Phosphoprotein Phosphatase, Tyrosyl,Protein Phosphatase, Phosphotyrosyl,Protein Tyrosine Phosphatase,Tyrosine Phosphatases, Protein

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