The SUMO-Specific Protease Senp2 Regulates SUMOylation, Expression and Function of Human Organic Anion Transporter 3
| Autor: | Haoxun Wang, Guofeng You |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Male Proteases Organic anion transporter 1 Immunoprecipitation medicine.medical_treatment Mutant Biophysics SUMO protein Organic Anion Transporters Sodium-Independent Kidney Biochemistry Article Rats Sprague-Dawley 03 medical and health sciences 0302 clinical medicine Chlorocebus aethiops medicine Animals Humans RNA Small Interfering Cells Cultured Gene knockdown Protease biology Chemistry Sumoylation Cell Biology Transfection Cell biology Cysteine Endopeptidases 030104 developmental biology 030220 oncology & carcinogenesis COS Cells biology.protein |
| Zdroj: | Biochim Biophys Acta Biomembr |
| Popis: | Organic anion transporter 3 (OAT3) plays a vital role in removing a broad array of anionic drugs from kidney, thereby avoiding their possibly toxic side effects in the body. We earlier demonstrated that OAT3 is subjected to a specific type of post-translational modification called SUMOylation. SUMOylation is a dynamic event, where de-SUMOylation is catalyzed by a class of SUMO-specific proteases. In the present investigation, we assessed the role of SUMO-specific protease Senp2 in OAT3 SUMOylation, expression and function. We report here that overexpression of Senp2 in COS-7 cells led to a reduced OAT3 SUMOylation, which correlated well with a decreased OAT3 expression and transport activity. Such phenomenon was not observed in cells overexpressing an inactive mutant of Senp2. Furthermore, transfection of cells with Senp2-specific siRNA to knockdown the endogenous Senp2 resulted in an increased OAT3 SUMOylation, which correlated well with an enhanced OAT3 expression and transport activity. Coimmunoprecipitation experiments showed that Senp2 directly interacted with OAT3 in the kidneys of rats. Together these results provided first demonstration that Senp2 is a significant regulator for OAT3-mediated organic anion/drug transport. |
| Databáze: | OpenAIRE |
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