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Qi Y, Yang H, Wang S, Zou L, Zhao F, Zhang Q, Hong Y, Luo Q, Zhou Q, Geng P, Chen H, Ji F, Cai J, Dai D. Identification and Functional Assessment of Eight CYP3A4 Allelic Variants *39-*46 Detected in the Chinese Han Population. Drug Metab Dispos 2024; 52:218-227. [PMID: 38195522 DOI: 10.1124/dmd.123.001542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/10/2023] [Accepted: 12/15/2023] [Indexed: 01/11/2024] Open
Abstract
Cytochrome P450 3A4 (CYP3A4), a key enzyme, is pivotal in metabolizing approximately half of the drugs used clinically. The genetic polymorphism of the CYP3A4 gene significantly influences individual variations in drug metabolism, potentially leading to severe adverse drug reactions (ADRs). In this study, we conducted a genetic analysis on CYP3A4 gene in 1163 Chinese Han individuals to identify the genetic variations that might affect their drug metabolism capabilities. For this purpose, a multiplex polymerase chain reaction (PCR) amplicon sequencing technique was developed, enabling us to perform the genotyping of CYP3A4 gene efficiently and economically on a large scale. As a result, a total of 14 CYP3A4 allelic variants were identified, comprising six previously reported alleles and eight new nonsynonymous variants that were nominated as new allelic variants *39-*46 by the PharmVar Association. Further, functional assessments of these novel CYP3A4 variants were undertaken by coexpressing them with cytochromes P450 oxidoreductase (CYPOR) in Saccharomyces cerevisiae microsomes. Immunoblot analysis indicated that with the exception of CYP3A4.40 and CYP3A4.45, the protein expression levels of most new variants were similar to that of the wild-type CYP3A4.1 in yeast cells. To evaluate their catalytic activities, midazolam was used as a probe drug. The results showed that variant CYP3A4.45 had almost no catalytic activity, whereas the other variants exhibited significantly reduced drug metabolism abilities. This suggests that the majority of the CYP3A4 variants identified in the Chinese population possess markedly altered capacities for drug metabolism. SIGNIFICANCE STATEMENT: In this study, we established a multiplex polymerase chain reaction (PCR) amplicon sequencing method and detected the maximum number of new CYP3A4 variants in a single ethnic population. Additionally, we performed the functional characterizations of these eight novel CYP3A4 allele variants in vitro. This study not only contributes to the understanding of CYP3A4 genetic polymorphism in the Chinese Han population but also holds substantial reference value for their potential clinical applications in personalized medicine.
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Affiliation(s)
- Yuying Qi
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Hang Yang
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Shuanghu Wang
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Lili Zou
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Fangling Zhao
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Qing Zhang
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Yun Hong
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Qingfeng Luo
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Quan Zhou
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Peiwu Geng
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Hao Chen
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Fusui Ji
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Jianping Cai
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Dapeng Dai
- Peking University Fifth School of Clinical Medicine, Beijing, China (Y.Q., H.Y., D.D.); The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, China (H.Y., F.Z., J.C.); Laboratory of Clinical Pharmacy, The Sixth Affiliated Hospital of Wenzhou Medical University, The People's Hospital of Lishui, Lishui, China (S.W., Q.Z., P.G.); and Department of Cardiology (L.Z., Q.Z., H.C., F.J.) and Department of Gastroenterology (Y.H., Q.L.), Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
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