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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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The human BTG2/TIS21/PC3 gene: genomic structure, transcriptional regulation and evaluation as a candidate tumor suppressor gene.

BTG2/TIS21/PC3 protein is involved in the regulation of G1/S transition of the cell cycle by inhibiting pRb function, suggesting that BTG2/TIS21/PC3 regulation is critical for normal cell growth and proliferation. To understand the regulatory mechanisms for the expression of BTG2/TIS21/PC3 we cloned the human gene. Potential binding sites for several transcription factors were identified in the 5'-flanking region of the gene. Transient expression assays with BTG2/TIS21/PC3 promoter deletions and electrophoretic mobility shift analysis identified a major wild-type p53 response element located -74 to -122 relative to the start codon. This genomic fragment was sufficient to constitute a promoter element in the presence of p53. The BTG2/TIS21/PC3 gene is an antiproliferative gene which maps within a chromosomal segment (1q32) frequently altered in breast adenocarcinomas. However, no mutations of BTG2/TIS21/PC3 were detected in breast cancer cells, suggesting that the inactivation of this gene is not a frequent genetic event during breast carcinogenesis.[1]

References

  1. The human BTG2/TIS21/PC3 gene: genomic structure, transcriptional regulation and evaluation as a candidate tumor suppressor gene. Duriez, C., Falette, N., Audoynaud, C., Moyret-Lalle, C., Bensaad, K., Courtois, S., Wang, Q., Soussi, T., Puisieux, A. Gene (2002) [Pubmed]
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