title: Crosstalk Among UV-Induced Inflammatory Mediators, DNA Damage and Epigenetic Regulators Facilitates Suppression of the Immune System.
abstract: The suppression of the immune system by overexposure to ultraviolet (UV) radiation has been implicated in the initiation and progression of photocarcinogenesis. Numerous changes occur in the skin on UVB exposure, including the generation of inflammatory mediators, DNA damage, epigenetic modifications, and migration and functional alterations in the antigen-presenting dendritic cells. Although each of these alterations can elicit a cascade of events that have the potential to modulate immune sensitivity alone, there is emerging evidence that there is considerable crosstalk between these cascades. The development of an understanding of UV-induced changes in the skin that culminate in UV-induced immunosuppression, which has been implicated in the risk of nonmelanoma skin cancer, as a network of events has implications for the development of more effective chemopreventive strategies. In the current review article, we discuss the evidence of interactions between the various molecular targets and signaling mechanisms associated with UV-induced immunosuppression.
authors.affiliation: Departments of Dermatology, University of Alabama at Birmingham, Birmingham, AL.
authors.forename: Ram
authors.initials: R
authors.lastname: Prasad
authors.affiliation: Departments of Dermatology, University of Alabama at Birmingham, Birmingham, AL.|Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, AL.|Nutrition Obesity Research Center, University of Alabama at Birmingham, Birmingham, AL.|Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL.|Birmingham Veterans Affairs Medical Center, Birmingham, AL.
authors.forename: Santosh K
authors.initials: SK
authors.lastname: Katiyar
mesh_terms: D000818:Animals; D004249:DNA Damage; D044127:Epigenesis, Genetic / Q000528:radiation effects*; D006801:Humans; D007107:Immune System / Q000378:metabolism* / Q000528:radiation effects*; D018836:Inflammation Mediators / Q000378:metabolism*; D009381:Neoplasms, Radiation-Induced / Q000209:etiology; D012867:Skin / Q000276:immunology / Q000378:metabolism / Q000528:radiation effects*; D012878:Skin Neoplasms / Q000209:etiology; D013472:Sunlight / Q000009:adverse effects*; D014466:Ultraviolet Rays / Q000009:adverse effects*
chemical_list: D018836:Inflammation Mediators