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Masimirembwa C, Ramsay M, Botha J, Ellis E, Etheredge H, Hurrell T, Kanji CR, Kapungu NN, Maher H, Mthembu B, Naidoo J, Scholefield J, Rambarran S, van der Schyff F, Smyth N, Strobele B, Thelingwani RS, Loveland J, Fabian J. The African Liver Tissue Biorepository Consortium: Capacitating Population-Appropriate Drug Metabolism, Pharmacokinetics, and Pharmacogenetics Research in Drug Discovery and Development. Drug Metab Dispos 2023; 51:1551-1560. [PMID: 37751997 DOI: 10.1124/dmd.123.001400] [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: 05/24/2023] [Revised: 08/21/2023] [Accepted: 09/13/2023] [Indexed: 09/28/2023] Open
Abstract
Pharmaceutical companies subject all new molecular entities to a series of in vitro metabolic characterizations that guide the selection and/or design of compounds predicted to have favorable pharmacokinetic properties in humans. Current drug metabolism research is based on liver tissue predominantly obtained from people of European origin, with limited access to tissue from people of African origin. Given the interindividual and interpopulation genomic variability in genes encoding drug-metabolizing enzymes, efficacy and safety of some drugs are poorly predicted for African populations. To address this gap, we have established the first comprehensive liver tissue biorepository inclusive of people of African origin. The African Liver Tissue Biorepository Consortium currently includes three institutions in South Africa and one in Zimbabwe, with plans to expand to other African countries. The program has collected 67 liver samples as of July 2023. DNA from the donors was genotyped for 120 variants in 46 pharmacogenes and revealed variants that are uniquely found in African populations, including the low-activity, African-specific CYP2C9*5 and *8 variants relevant to the metabolism of diclofenac. Larger liver tissue samples were used to isolate primary human hepatocytes. Viability of the hepatocytes and microsomal fractions was demonstrated by the activity of selected cytochrome P450s. This resource will be used to ensure the safety and efficacy of existing and new drugs in African populations. This will be done by characterizing compounds for properties such as drug clearance, metabolite and enzyme identification, and drug-drug and drug-gene interactions. SIGNIFICANCE STATEMENT: Standard optimization of the drug metabolism of new molecular entities in the pharmaceutical industry uses subcellular fractions such as microsomes and isolated primary hepatocytes, being done mainly with tissue from donors of European origin. Pharmacogenetics research has shown that variants in genes coding for drug-metabolizing enzymes have interindividual and interpopulation differences. We established an African liver tissue biorepository that will be useful in ensuring drug discovery and development research takes into account drug responses in people of African origin.
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Affiliation(s)
- Collen Masimirembwa
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Michele Ramsay
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Jean Botha
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Ewa Ellis
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Harriet Etheredge
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Tracey Hurrell
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Comfort Ropafadzo Kanji
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Nyasha Nicole Kapungu
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Heather Maher
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Busisiwe Mthembu
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Jerolen Naidoo
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Janine Scholefield
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Sharan Rambarran
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Francisca van der Schyff
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Natalie Smyth
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Bernd Strobele
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Roslyn Stella Thelingwani
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - Jerome Loveland
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
| | - June Fabian
- African institute of biomedical Science and Technology (AiBST), Harare, Zimbabwe (C.M., C.R.K., N.N.K., R.S.T.); Sydney Brenner Institute of Molecular Bioscience (SBIMB), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (C.M., M.R., B.M., N.S.); Wits Donald Gordon Medical Centre (WDGMC), Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa (H.E., H.M., S.R., B.S., F.V.S., J.L., J.F.); Karolinska Institute, Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska University Hospital Huddinge, Sweden (E.E.); Bioengineering and Integrated Genomics Group, Next Generation Health Cluster, Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa (T.H., J.N., J.S.); and Transplant Services, Intermountain Medical Center, Salt Lake City, Utah (J.B.)
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