PMID- 12486224 OWN - NLM STAT- MEDLINE DCOM- 20030121 LR - 20181113 IS - 0027-8424 (Print) IS - 1091-6490 (Electronic) IS - 0027-8424 (Linking) VI - 99 IP - 26 DP - 2002 Dec 24 TI - ARF mutation accelerates pituitary tumor development in Rb+/- mice. PG - 16865-70 AB - Mice heterozygous for the retinoblastoma (Rb) tumor suppressor gene develop pituitary and thyroid tumors with high penetrance. We demonstrate here that loss of the ARF tumor suppressor strongly accelerates intermediate lobe pituitary tumorigenesis in Rb heterozygous mice. These effects in the pituitary are greater than those conferred by p53 loss in that Rb+-;ARF-- mice display significantly more early atypical lesions than Rb+-; p53-- mice. Also, Rb+-;ARF-- compound mutants do not develop many of the novel tumors or precancerous lesions seen in Rb+-;p53-- compound mutants. Although complete loss of ARF expression is not obligatory for pituitary tumorigenesis in Rb+- mice, alterations of the ARF locus are observed in tumors from Rb+-;ARF+- mice, consistent with a selective advantage of ARF inactivation in this context. We conclude that inactivation of ARF acts more broadly than that of p53 in connecting abrogation of the Rb pathway to tumorigenesis. FAU - Tsai, Kenneth Y AU - Tsai KY AD - Department of Biology and Center for Cancer Research, and Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. FAU - MacPherson, David AU - MacPherson D FAU - Rubinson, Douglas A AU - Rubinson DA FAU - Nikitin, Alexander Yu AU - Nikitin AY FAU - Bronson, Roderick AU - Bronson R FAU - Mercer, Kim L AU - Mercer KL FAU - Crowley, Denise AU - Crowley D FAU - Jacks, Tyler AU - Jacks T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20021216 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Tumor Suppressor Protein p14ARF) SB - IM CIN - Cell Cycle. 2003 Jan-Feb;2(1):27-30. PMID: 12695682 MH - Animals MH - Cell Division MH - Chromosome Mapping MH - Genes, Retinoblastoma/*physiology MH - Genes, p53/physiology MH - Loss of Heterozygosity MH - Mice MH - *Mutation MH - Pituitary Neoplasms/*genetics/pathology MH - Tumor Suppressor Protein p14ARF/*genetics PMC - PMC139235 EDAT- 2002/12/18 04:00 MHDA- 2003/01/22 04:00 PMCR- 2003/06/24 CRDT- 2002/12/18 04:00 PHST- 2002/12/18 04:00 [pubmed] PHST- 2003/01/22 04:00 [medline] PHST- 2002/12/18 04:00 [entrez] PHST- 2003/06/24 00:00 [pmc-release] AID - 262499599 [pii] AID - pq2602016865 [pii] AID - 10.1073/pnas.262499599 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2002 Dec 24;99(26):16865-70. doi: 10.1073/pnas.262499599. Epub 2002 Dec 16.