© 2000 by Oxford University Press
Journal of the National Cancer Institute, Vol. 92, No. 10, 780-781,
May 17, 2000
© 2000 Oxford University Press
EDITORIALS |
Retinoids and Demethylating Agents Looking for Partners
Correspondence to: Michael B. Sporn, M.D., Department of Pharmacology, Dartmouth Medical School, Hanover, NH 03755 (e-mail:Michael.Sporn@Dartmouth.edu).
The concept that carcinogenesis may be the result of a deficiency or a failure of the action of substances that are negative regulators of control of proliferation and growth of cells is hardly new (1) and certainly antedates current interest in the mutation of tumor suppressor genes in the causation of cancer. Thus, in their classic article on the role of retinoid deficiency in control of epithelial proliferation and differentiation, Wolbach and Howe (2) noted that retinoid-deficient epithelial tissues had a premalignant phenotype that was characterized by enhanced mitotic activity and loss of differentiation. Retinoids may indeed be considered prototypes of
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