New Insights into SN-38 Glucuronidation: Evidence for the Important Role of UDP Glucuronosyltransferase 1A9
文献类型：期刊论文
| 作者 | Xiao, Ling2,3; Zhu, Liangliang3,4; Li, Wenjuan3,4; Li, Conghu3,4; Cao, Yunfeng5,6; Ge, Guangbo1; Sun, Xiaoyu5,6 |
| 刊名 | BASIC & CLINICAL PHARMACOLOGY & TOXICOLOGY
 |
| 出版日期 | 2018-04-01 |
| 卷号 | 122期号:4页码:424-428 |
| ISSN号 | 1742-7835 |
| DOI | 10.1111/bcpt.12929 |
| 文献子类 | Article |
| 英文摘要 | Glucuronidation of SN-38 serves as an important metabolic pathway in determining the toxic effects of irinotecan. The role of UDP-glucuronosyltransferases (UGT) 1A9 in SN-38 glucuronidation pathway is very confusing. This study re-investigates the pathway through testing effects of bovine serum albumin (BSA) and the selective inhibitor on SN-38 glucuronidation in pooled human liver microsomes (HLM) and recombinant UGT1A1/UGT1A9. For UGT1A1, SN-38 glucuronidation was little affected by BSA. Whether in the presence of BSA or not, the reactions both obey Michaelis-Menten kinetics with closed Vmax/Km values. For UGT1A9 and HLM, BSA can significantly accelerate SN-38 glucuronidation activities and similar effects are further observed on kinetic patterns. In the absence of BSA, reactions by HLM and UGT1A9 both display substrate inhibition kinetics. When BSA is included in the incubations, the reactions exhibit Michaelis-Menten kinetics. To get the true contribution of UGT1A9 in SN-38 glucuronidation, a relative activity factor (RAF) approach was additionally used. It is suggested that UGT1A9 and 1A1 contribute equally to SN-38 glucuronidation in HLM. Furthermore, in the presence of BSA, magnolol, a selective UGT1A9 inhibitor, displays moderate inhibition against HLM. Results together conclude that UGT1A9 serves as an additional important contributor to hepatic SN-38 glucuronidation. |
| WOS关键词 | BOVINE SERUM-ALBUMIN ; UGT1A9 ; 7-ETHYL-10-HYDROXYCAMPTOTHECIN ; POLYMORPHISMS ; INHIBITION ; METABOLISM ; ISOFORMS ; LIVER ; MICROSOMES ; MAGNOLOL |
| WOS研究方向 | Pharmacology & Pharmacy ; Toxicology |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000427113100008 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168908]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Zhu, Liangliang |
| 作者单位 | 1.Shanghai Univ Tradit Chinese Med, Inst Interdisciplinary Integrat Med Res, Shanghai, Peoples R China 2.Anqing Normal Univ, Sch Resources & Environm, Lab Environm Sci, Anqing, Peoples R China 3.Anqing Normal Univ, Anhui Res Ctr Aquat Organism Conservat & Water Ec, Anqing, Peoples R China 4.Anqing Normal Univ, Dept Food Sci & Technol, Sch Life Sci, 1318 North Jixian Rd, Anqing 246011, Peoples R China 5.Dalian Inst Chem Phys, Joint Ctr Translat Med, Dalian, Peoples R China 6.Liaoning Med Univ, Affiliated Hosp 1, Dalian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xiao, Ling,Zhu, Liangliang,Li, Wenjuan,et al. New Insights into SN-38 Glucuronidation: Evidence for the Important Role of UDP Glucuronosyltransferase 1A9[J]. BASIC & CLINICAL PHARMACOLOGY & TOXICOLOGY,2018,122(4):424-428. |
| APA | Xiao, Ling.,Zhu, Liangliang.,Li, Wenjuan.,Li, Conghu.,Cao, Yunfeng.,...&Sun, Xiaoyu.(2018).New Insights into SN-38 Glucuronidation: Evidence for the Important Role of UDP Glucuronosyltransferase 1A9.BASIC & CLINICAL PHARMACOLOGY & TOXICOLOGY,122(4),424-428. |
| MLA | Xiao, Ling,et al."New Insights into SN-38 Glucuronidation: Evidence for the Important Role of UDP Glucuronosyltransferase 1A9".BASIC & CLINICAL PHARMACOLOGY & TOXICOLOGY 122.4(2018):424-428. |
入库方式： OAI收割
来源：大连化学物理研究所
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