Related Experiment Video
Updated: Aug 15, 2026

Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
Published on: September 7, 2013
Antiproliferative effects of melatonin and CGP 52608
1Laboratory of Electron Microscopy, Chair of Pathomorphology, Medical University of Lodz, Lodz, Poland. Micha.7497401@pharmanet.com.pl
Abstract:
The antiproliferative effects of melatonin and CGP 52608, an exogenous ligand for RZR/ROR receptors, are compared in the present paper. Both compounds exerted similar inhibitory effects on the proliferation of neoplastic cells in mouse colonic adenocarcinoma, DU 145 human prostate cancer, MCF-7 human breast carcinoma, and rat diethylstilbestrol-induced prolactinoma. Although it has been suggested that melatonin may influence the proliferation of tumor cells via RZR/ROR receptors, it cannot be excluded that the antiproliferative effects of melatonin and CGP 52608 are unrelated and mediated by different intracellular mechanisms.
Insights
Melatonin and CGP 52608 show similar antiproliferative effects on various cancer cells. Their mechanisms may be distinct, despite melatonin
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Melatonin is a hormone with potential anticancer properties.
- RZR/ROR receptors are nuclear receptors implicated in various cellular processes.
- CGP 52608 is an exogenous ligand for RZR/ROR receptors.
Purpose of the Study:
- To compare the antiproliferative effects of melatonin and CGP 52608.
- To investigate the potential involvement of RZR/ROR receptors in melatonin's action.
Main Methods:
- In vitro antiproliferation assays.
- Testing on mouse colonic adenocarcinoma, DU 145 human prostate cancer, MCF-7 human breast carcinoma, and rat diethylstilbestrol-induced prolactinoma cell lines.
Main Results:
- Both melatonin and CGP 52608 demonstrated similar inhibitory effects on cancer cell proliferation.
- The antiproliferative effects were observed across multiple cancer types.
Conclusions:
- Melatonin and CGP 52608 exhibit comparable antiproliferative activities against neoplastic cells.
- The precise mechanisms underlying these effects, and their potential relation to RZR/ROR receptors, require further investigation.

