Therapeutic effect of NEO400, perillyl alcohol conjugated to linoleic acid, in a mouse model of UV‐induced skin damage

Author:

Swenson Stephen1ORCID,Silva‐Hirschberg Catalina2,Freeland Liliana1,Chen Kristen L.3ORCID,Marín‐Ramos Nagore I.1ORCID,Schönthal Axel H.2ORCID,Chen Thomas C.1456ORCID

Affiliation:

1. Department of Neurosurgery, Keck School of Medicine University of Southern California Los Angeles California USA

2. Department of Molecular Microbiology and Immunology, Keck School of Medicine University of Southern California Los Angeles California USA

3. Department of Dermatology University of Wisconsin School of Medicine and Public Health Madison Wisconsin USA

4. Department of Pathology, Keck School of Medicine University of Southern California Los Angeles California USA

5. USC/Norris Comprehensive Cancer Center University of Southern California Los Angeles California USA

6. NeOnc Technologies, Inc. Los Angeles California USA

Abstract

AbstractExcessive exposure to ultraviolet radiation (UVR) causes harmful effects on human skin. Pre‐exposure application of sunscreen can be protective, but not after damage already has occurred. There is a need for agents that can be applied post‐UVR exposure to repair the damage. We investigated a novel compound, NEO400, that appears to meet this medicinal need. NEO400 was created by conjugating linoleic acid to perillyl alcohol. UVR was repeatedly administered to the skin of mice over several weeks, where it caused the typical signs of UV damage, including scaling of the skin, DNA damage, and elevated levels of inflammatory cytokines. However, when NEO400 was applied immediately post‐UVR, it triggered the appearance of markers for dermal stem cell proliferation, and no signs of skin damage emerged. Furthermore, when NEO400 was applied to skin that already had incurred significant damage, it accelerated skin healing. When applied individually, linoleic acid and perillyl alcohol were ineffective, indicating that they had to be conjugated in order to exert therapeutic efficacy. None of these skin‐protective effects could be achieved with Aloe vera gel, a popular and widely used post‐exposure remedy. Our study suggests that NEO400 holds potential as a regenerative treatment for excessively UVR‐exposed skin.

Publisher

Wiley

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