Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:2.7.10.2 (focal adhesion kinase)
 44,029 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The current study examined the chemopreventive potential of the dual-function JAK3/EGFR tyrosine kinase inhibitor WHI-P131 (CAS 202475-60-3) in photocarcinogenesis of non-melanoma skin cancer (NMSC). Prophylactic WHI-P131 exhibited significant anti-inflammatory activity in the SKH-1 mouse model of sunburn and afforded significant protection against the inflammatory skin damage that results from UVB exposure. UVB exposure (400 mJ/cm2) increased the mutation rate of the transgene target in UVB-exposed skin of BigBlue mice by a factor of 3.7 from 8.6 x 10(-5) to 31.7 x 10(-5) but this genotoxicity was almost completely prevented by topically administered prophylactic WHI-Pl31 (1.5 mg/cm2). Chronic and repetitive exposure of vehicle-treated SKH-1 mice to 35 mJ/cm2 UVB, three times per week for 20 weeks resulted in appearance of a spectrum of lesions from actinic keratoses and squamous cell carcinoma (SCC) in situ to invasive SCC. Both the number and size of the skin lesions progressively increased over time. Notably, topical administration of WHI-P131 (1.0 mg/cm2) over the UVB target skin area on the dorsal surface 15 min before each UVB exposure significantly suppressed the photocarcinogenesis as documented by a 4-week delay in the onset of visible skin lesions, decreased total lesion volume per mouse (1.9 +/- 0.5 mm3 vs. 2.5 +/- 0.5 mm3/lesion at 20 weeks), and decreased number (1.6 +/- 0.4/mouse vs. 4.2 +/- 1.6/mouse at 20 weeks, P < 0.05) as well as smaller size of lesions and consequently a smaller total lesion volume ("skin cancer burden") (10.6 +/- 4.3 mm3 vs. 3.2 +/- 0.9 mm3 at 20 weeks, P < 0.05). These experimental findings provide unprecedented evidence that WHI-P131 may be useful as a chemopreventive agent against NMSC.
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PMID:Prevention of UVB-induced skin inflammation, genotoxicity, and photocarcinogenesis in mice by WHI-P131, a dual-function inhibitor of Janus kinase 3 and EGF receptor kinase. 2048 73

Ultraviolet radiation is markedly increased because of pollution and the depletion of the stratospheric ozone layer. Excessive exposure to sunlight can negatively affect the skin, resulting in sunburn, photo-aging, or skin cancer. In this study, we first determined the photoprotective effect of sanshool, a major component in Zanthoxylum bungeanum, on UVB-irradiated responses in human dermal fibroblasts (HDFs) and nude mouse. We found that sanshool treatment can protect cells against the effects of UVB irradiation by (i) increasing cell viability, (ii) inhibiting MMP expression, and (iii) inducing autophagy. We also used the recombinant CSF2 or anti-CSF2 antibody co-cultured with human dermal fibroblasts (HDFs) and found that CSF2 contributes to sanshool-induced autophagy. Sanshool hindered the UVB-induced activation of JAK2-STAT3 signaling in HDFs, thereby inhibiting the expression of MMPs and activation of autophagic flux. Exposure of the dorsal skin of hairless mice to UVB radiation and subsequent topical application of sanshool delayed the progression of skin inflammation, leading to autophagy and inhibiting the activation of JAK2-STAT3 signaling. These results provide a basis for the study of the photoprotective effect of sanshool and suggest that it can be potentially used as an agent against UVB-induced skin damage in humans.
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PMID:Sanshool improves UVB-induced skin photodamage by targeting JAK2/STAT3-dependent autophagy. 3062 45