Title : Silibinin prevents ultraviolet B radiation-induced epidermal damages in JB6 cells and mouse skin in a p53-GADD45α-dependent manner.

Pub. Date : 2012 Mar

PMID : 22166495






5 Functional Relationships(s)
Download
Sentence
Compound Name
Protein Name
Organism
1 In mechanistic studies, UVB-irradiated cells showed a transient upregulation of both phosphorylated (Ser-15 and Ser-392) and total p53, whereas silibinin pretreatment led to a more sustained upregulation and stronger nuclear localization of p53. Silybin tumor protein p53 Homo sapiens
2 Silibinin also caused a marked upregulation of GADD45alpha, a downstream target of p53, implicated in DNA repair and cell cycle regulation. Silybin tumor protein p53 Homo sapiens
3 Importantly, under p53 and GADD45alpha knockdown conditions, cells were more susceptible to UVB-induced apoptosis without any significant S phase arrest, and protective effects of silibinin were compromised. Silybin tumor protein p53 Homo sapiens
4 Together, our results show for the first time that p53-mediated GADD45alpha upregulation is the key mechanism by which silibinin protects against UVB-induced photodamage and provides a strong rationale to investigate silibinin in reducing the risk and/or preventing early onset of NMSC. Silybin tumor protein p53 Homo sapiens
5 Together, our results show for the first time that p53-mediated GADD45alpha upregulation is the key mechanism by which silibinin protects against UVB-induced photodamage and provides a strong rationale to investigate silibinin in reducing the risk and/or preventing early onset of NMSC. Silybin tumor protein p53 Homo sapiens