Identification of a candidate tumour suppressor gene, MMAC1, at chromosome 10q23.3 that is mutated in multiple advanced cancers

Peter A. Steck, Mark A. Pershouse, Samar A. Jasser, W. K.Alfred Yung, Huai Lin, Azra H. Ligon, Lauren A. Langford, Michelle L. Baumgard, Thomas Hattier, Thaylon Davis, Cheryl Frye, Rong Hu, Bradley Swedlund, David H.F. Teng, Scan V. Tavtigian

Research output: Contribution to journalArticlepeer-review

Abstract

Deletions involving regions of chromosome 10 occur in the vast majority (>90%) of human glioblastoma multiformes. A region at chromosome 10q23-24 was implicated to contain a tumour suppressor gene and the identification of homozygous deletions in four glioma cell lines further refined the location. We have identified a gene, designated MMAC1, that spans these deletions and encodes a widely expressed 5.5-kb mRNA. The predicted MMAC1 protein contains sequence motifs with significant homology to the catalytic domain of protein phosphatases and to the cytoskeletal proteins, tensin and auxilin. MMAC1 coding-region mutations were observed in a number of glioma, prostate, kidney and breast carcinoma cell lines or tumour specimens. Our results identify a strong candidate tumour suppressor gene at chromosome 10q23.3, whose loss of function appears to be associated with the oncogenesis of multiple human cancers.

Original languageEnglish
Pages (from-to)356-362
Number of pages7
JournalNature Genetics
Volume15
Issue number4
DOIs
StatePublished - Apr 1997

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