Melanin photosensitizes ultraviolet light (UVC) DNA damage in pigmented cells

CA Huselton, HZ Hill, JP O'Neill - Environmental and molecular …, 1990 - Wiley Online Library
Melanins, pigments of photoprotection and camouflage, are very photoreactive and can both
absorb and emit active oxygen species. Nevertheless, black skinned individuals rarely …

[HTML][HTML] The role of melanin in the induction of oxidative DNA base damage by ultraviolet A irradiation of DNA or melanoma cells

E Kvam, RM Tyrrell - Journal of Investigative Dermatology, 1999 - Elsevier
Highly pigmented, dark skin is more resistant to the harmful effects of solar ultraviolet
radiation than light-colored human skin. The extent to which tanning protects skin from …

Melanin reduces ultraviolet-induced DNA damage formation and killing rate in cultured human melanoma cells

N Kobayashi, T Muramatsu, Y Yamashina… - Journal of investigative …, 1993 - Elsevier
Epidermal melanin pigment is believed to prevent development of ultraviolet (UV)–induced
skin cancer by shielding cell nuclei and reducing DNA damage formation. It has not been …

Commentary: Chemiexcitation of melanin derivatives induces DNA photoproducts long after UV exposure

RP Gajula, S Gaddameedhi - Frontiers in Physiology, 2015 - frontiersin.org
Cutaneous malignant melanoma (CMM) is one of the most rapidly increasing cancers in the
western world (Bowden, 2004). Frequency of its occurrence is closely associated with skin …

Melanin: a two edged sword?

HZ Hill, W Li, P Xin, DL Mitchell - Pigment cell research, 1997 - Wiley Online Library
Melanin is both photosensitizer and photoprotector. Skin cancer rates decrease with
increasing constitutive pigmentation, yet the pigment has been shown to be photoreactive …

Melanin Offers Protection Against Induction of Cyclobutane Pyrimidine Dimers and 6–4 Photoproducts by UVB in Cultured Human Melanocytes¶

NPM Smit, AA Vink, RM Kolb… - Photochemistry and …, 2001 - Wiley Online Library
The goal of this investigation was to correlate the melanin content in human pigmentary cells
with the generation of UVB‐induced photoproducts and to examine the relationship between …

Effect of pigment on photomediated production of thymine dimers in cultured melanoma cells

DA London, DM Carter, ES Condit - Journal of Investigative Dermatology, 1976 - Elsevier
It was the aim of these studies to determine whether the presence of intracellular melanin
quantitatively alters the rate of production of thymine dimers in DNA of irradiated cells in …

Melanin acts as a potent UVB photosensitizer to cause an atypical mode of cell death in murine skin

S Takeuchi, W Zhang, K Wakamatsu… - Proceedings of the …, 2004 - National Acad Sciences
Melanin protects the skin against DNA damage induced by direct absorption of sunlight's UV
radiation. Yet, irradiating melanin in vitro or in cultured cells also generates active oxygen …

[HTML][HTML] (Pheo) melanin photosensitizes UVA-induced DNA damage in cultured human melanocytes

E Wenczl, NPM Smit, S Pavel, AA Schothorst… - Journal of investigative …, 1998 - Elsevier
The question of whether melanins are photoprotecting and/or photosensitizing in human
skin cells continues to be debated. To evaluate the role of melanin upon UVA irradiation …

Comparison of the responses of human melanocytes with different melanin contents to ultraviolet B irradiation

D Barker, K Dixon, EE Medrano, D Smalara, S Im… - Cancer Research, 1995 - AACR
Melanin is thought to serve in photoprotection. To investigate this, we have compared the
responses of cultured human melanocytes derived from different pigmentary phenotypes …