© 1999 by Oxford University Press
Journal of the National Cancer Institute, Vol. 91, No. 13, 1099-1100,
July 7, 1999
© 1999 Oxford University Press
EDITORIALS |
Fenretinide: the Death of a Tumor Cell
Correspondence to: John C. Reed, M.D., Ph.D., The Burnham Institute, La Jolla, CA 92037 (e-mail: jreed@burnham-inst.org).
Synthetic retinoids hold great promise as new agents for the
prevention and treatment of cancer. Attempts by chemists to generate
novel retinoid-like structures have resulted in several compounds with
potent antitumor activity [reviewed in (1)]. However, not
all of these synthetic retinoid-like compounds bind known members of
the retinoic acid receptor (RAR; RXR [i.e., retinoid X receptor]) or
nuclear receptor families of transcriptional regulators. The compound
N-(4-hydroxylphenyl)retinamide (4-HPR; fenretinide) represents
a synthetic "retinoid" for which the primary cellular target is
unidentified. Although 4-HPR can induce expression of RARß, it
remains controversial whether the antitumor effects of this compound
can be explained by binding to retinoid receptors (2,3). 4-HPR
has been demonstrated to induce apoptosis at concentrations typically
in the range of 1-5
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