PMID- 7867008 OWN - NLM STAT- MEDLINE DCOM- 19950330 LR - 20211203 IS - 0008-5472 (Print) IS - 0008-5472 (Linking) VI - 55 IP - 5 DP - 1995 Mar 1 TI - Detection of CDKN2 deletions in tumor cell lines and primary glioma by interphase fluorescence in situ hybridization. PG - 984-8 AB - Deletions of chromosomal band 9p21 have been detected in various tumor types including melanoma, glioma, lung cancer, mesothelioma, and bladder cancer. Recently, the CDKN2 gene (p16INK4A, MTS I, CDK41) has been proposed as a candidate tumor suppressor gene because it is frequently deleted in cell lines derived from multiple tumor types. We performed fluorescence in situ hybridization (FISH) with interphase cells using yeast artificial chromosome clones and a cosmid contig of the CDKN2 region. In 10 cell lines (4 glioma, 2 melanoma, 2 non-small cell lung cancer, 2 bladder cancer) with 9p alterations detected by molecular or cytogenetic analysis, interphase FISH with the CDKN2 cosmid contig detected all 9p deletions previously identified by molecular analysis. Using this probe, FISH analysis of primary glioblastoma tumors revealed homozygous deletions of the CDKN2 region in 6 of 9 tumors (67%) whereas a yeast artificial chromosome probe containing the interferon type I (IFN) gene cluster was deleted in only 4 cases (44%). Thus, it is likely that the CDKN2 region is the target of 9p deletions in gliomas. Interphase FISH will play an important role in defining the clinical significance of 9p deletions in primary tumors because it is especially applicable to clinical samples which may be contaminated by normal cells. FAU - Dreyling, M H AU - Dreyling MH AD - Department of Medicine, University of Chicago, Illinois 60637. FAU - Bohlander, S K AU - Bohlander SK FAU - Adeyanju, M O AU - Adeyanju MO FAU - Olopade, O I AU - Olopade OI LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (Proto-Oncogene Proteins) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.22 (CDK4 protein, human) RN - EC 2.7.11.22 (Cyclin-Dependent Kinase 4) RN - EC 2.7.11.22 (Cyclin-Dependent Kinases) SB - IM GS - CDK41 GS - CDKN2 GS - IFN GS - IFN3 GS - MTS 1 GS - p16INK4A MH - Brain Neoplasms/*genetics MH - Carcinoma, Non-Small-Cell Lung/genetics MH - *Chromosomes, Human, Pair 9 MH - Cyclin-Dependent Kinase 4 MH - *Cyclin-Dependent Kinases MH - *Gene Deletion MH - *Genes, Tumor Suppressor MH - Glioma/*genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Interphase/physiology MH - Lung Neoplasms/genetics MH - Melanoma/genetics MH - Neoplasms/*genetics MH - Protein Serine-Threonine Kinases/*genetics MH - *Proto-Oncogene Proteins MH - Tumor Cells, Cultured MH - Urinary Bladder Neoplasms/genetics EDAT- 1995/03/01 00:00 MHDA- 1995/03/01 00:01 CRDT- 1995/03/01 00:00 PHST- 1995/03/01 00:00 [pubmed] PHST- 1995/03/01 00:01 [medline] PHST- 1995/03/01 00:00 [entrez] PST - ppublish SO - Cancer Res. 1995 Mar 1;55(5):984-8.