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Abstract Title:

Differential role of cannabinoids in the pathogenesis of skin cancer.

Abstract Source:

Life Sci. 2015 Oct 1 ;138:35-40. Epub 2015 Apr 25. PMID: 25921771

Abstract Author(s):

Nicole Glodde, Mira Jakobs, Tobias Bald, Thomas Tüting, Evelyn Gaffal

Article Affiliation:

Nicole Glodde

Abstract:

AIM: Cannabinoids (CB) like∆(9)-tetrahydrocannabinol (THC) can induce cancer cell apoptosis and inhibit angiogenesis. However, the use of cannabinoids for the treatment of malignant diseases is discussed controversially because of their immunomodulatory effects which can suppress anti-tumor immunity. Here we investigated the role of exogenous and endogenous cannabinoids in mouse skin cancer.

MAIN METHODS: First we examined the effect of THC, which binds to CB receptors (CB1, CB2), on the growth of the mouse melanoma cell lines B16 and HCmel12 in vitro and in vivo in wild type (WT) and CB1/CB2-receptor deficient mice (Cnr1/2(-/-)). Next we evaluated the role of the endogenous cannabinoid system by studying the growth of chemically induced melanomas, fibrosarcoma and papillomas in WT and Cnr1/2(-/-) mice.

KEY FINDINGS: THC significantly inhibited tumor growth of transplanted HCmel12 melanomas in a CB receptor-dependent manner in vivo through antagonistic effects on its characteristic pro-inflammatory microenvironment. Chemically induced skin tumors developed in a similar manner in Cnr1/2(-/-) mice when compared to WT mice.

SIGNIFICANCE: Our results confirm the value of exogenous cannabinoids for the treatment of melanoma but do not support a role for the endogenous cannabinoid system in the pathogenesis of skin cancer.

Study Type : Animal Study

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Sayer Ji
Founder of GreenMedInfo.com

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