Publication Date:
1995-09-15
Description:
Cyclin-dependent kinases (CDKs) are activated by CDC25 phosphatases, which remove inhibitory phosphate from tyrosine and threonine residues. In human cells, CDC25 proteins are encoded by a multigene family, consisting of CDC25A, CDC25B, and CDC25C. In rodent cells, human CDC25A or CDC25B but not CDC25C phosphatases cooperate with either Ha-RASG12V or loss of RB1 in oncogenic focus formation. Such transformants were highly aneuploid, grew in soft agar, and formed high-grade tumors in nude mice. Overexpression of CDC25B was detected in 32 percent of human primary breast cancers tested. The CDC25 phosphatases may contribute to the development of human cancer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galaktionov, K -- Lee, A K -- Eckstein, J -- Draetta, G -- Meckler, J -- Loda, M -- Beach, D -- New York, N.Y. -- Science. 1995 Sep 15;269(5230):1575-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Cold Spring Harbor Laboratory, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7667636" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Breast Neoplasms/genetics
;
Cell Cycle Proteins/*genetics
;
Cell Division
;
*Cell Transformation, Neoplastic
;
Cells, Cultured
;
Gene Expression
;
Genes, Retinoblastoma
;
Genes, p53
;
Genes, ras
;
Humans
;
In Situ Hybridization
;
Mice
;
Mice, Inbred BALB C
;
Mice, Nude
;
*Multigene Family
;
Neoplasm Transplantation
;
*Oncogenes
;
Phosphoprotein Phosphatases/*genetics
;
Prognosis
;
Transfection
;
Tumor Cells, Cultured
;
cdc25 Phosphatases
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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