SerpinB10, a Serine Protease Inhibitor, Is Implicated in UV-Induced Cellular Response

Autor: Zsuzsanna Újfaludi, Zoltán Gábor Páhi, Lajos Haracska, Imre Boros, Hajnalka Majoros, Tibor Pankotai, Mónika Mórocz, Barbara N. Borsos
Rok vydání: 2021
Předmět:
Zdroj: International Journal of Molecular Sciences
Volume 22
Issue 16
International Journal of Molecular Sciences, Vol 22, Iss 8500, p 8500 (2021)
ISSN: 1422-0067
Popis: UV-induced DNA damage response and repair are extensively studied processes, as any malfunction in these pathways contributes to the activation of tumorigenesis. Although several proteins involved in these cellular mechanisms have been described, the entire repair cascade has remained unexplored. To identify new players in UV-induced repair, we performed a microarray screen, in which we found SerpinB10 (SPB10, Bomapin) as one of the most dramatically upregulated genes following UV irradiation. Here, we demonstrated that an increased mRNA level of SPB10 is a general cellular response following UV irradiation regardless of the cell type. We showed that although SPB10 is implicated in the UV-induced cellular response, it has no indispensable function in cell survival upon UV irradiation. Nonetheless, we revealed that SPB10 might be involved in delaying the duration of DNA repair in interphase and also in S-phase cells. Additionally, we also highlighted the interaction between SPB10 and H3. Based on our results, it seems that SPB10 protein is implicated in UV-induced stress as a “quality control protein”, presumably by slowing down the repair process.
Databáze: OpenAIRE