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Related Experiment Video

Updated: Jul 14, 2026

Human Primary Trophoblast Cell Culture Model to Study the Protective Effects of Melatonin Against Hypoxia/reoxygenation-induced Disruption

Human Primary Trophoblast Cell Culture Model to Study the Protective Effects of Melatonin Against Hypoxia/reoxygenation-induced Disruption

Published on: July 30, 2016

HaCaT cell proliferation influenced by melatonin.

U-C Hipler¹, T W Fischer, P Elsner

¹Department of Dermatology and Allergology, Friedrich-Schiller-Universität Jena, Jena, Germany. Christina.Hipler@med.uni-jena.de

Skin Pharmacology and Applied Skin Physiology

|October 7, 2003

Summary

Melatonin influences skin cell proliferation, with its effects varying by concentration and incubation time. This study determined safe melatonin levels for skin treatments, avoiding cytotoxicity in HaCaT keratinocytes.

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Last Updated: Jul 14, 2026

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Area of Science:

Pharmacology
Dermatology
Cell Biology

Background:

Melatonin is a hormone with diverse pharmacological effects.
Previous research indicates melatonin influences human hair follicle growth.

Purpose of the Study:

To investigate the effects of melatonin on HaCaT keratinocyte proliferation.
To determine safe melatonin concentrations for skin treatments.
To assess potential cytotoxic effects of melatonin on skin cells.

Main Methods:

Cell proliferation was measured using [3H]thymidine incorporation.
A fluorescence assay with Hoechst dye 33342 was employed.
ATP bioluminescence assays were conducted.

Main Results:

Melatonin demonstrated varying proliferative activity on HaCaT keratinocytes.
The observed effects were dependent on melatonin concentration and incubation time.
No cytotoxic effects were observed within the tested concentration ranges.

Conclusions:

Melatonin can modulate skin cell proliferation in a dose- and time-dependent manner.
Specific melatonin concentrations are suitable for skin treatments without causing cytotoxicity.
Further research into melatonin's dermatological applications is warranted.