{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,25]],"date-time":"2026-04-25T05:04:18Z","timestamp":1777093458524,"version":"3.51.4"},"reference-count":34,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T00:00:00Z","timestamp":1773705600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Talent Project established by Chinese Pharmaceutical Association Hospital Pharmacy department","award":["CPA-Z05-ZC-2025-003"],"award-info":[{"award-number":["CPA-Z05-ZC-2025-003"]}]},{"name":"Shanghai Higher Education Institution-Industry-Research Collaborative Education Team: Classical Wisdom, Clinical Empowerment Collaborative Team"},{"DOI":"10.13039\/100017950","name":"Shanghai Municipal Health Commission","doi-asserted-by":"publisher","award":["ZYCC2019019"],"award-info":[{"award-number":["ZYCC2019019"]}],"id":[{"id":"10.13039\/100017950","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pharmaceuticals"],"abstract":"<jats:p>Background\/Objectives: Cholestasis is a clinically intractable liver disorder. Da-Huang-Xiao-Shi Decoction (DHXSD), a classic traditional Chinese medicine formula, demonstrates notable efficacy, yet the mechanistic basis for its multi-herb synergy remains unclear. The purpose of this study was to decipher the pharmacokinetic interaction underlying the synergy of DHXSD. Methods: A cholestatic rat model was established in male Sprague Dawley rats. Hepatoprotective efficacy was evaluated, and the pharmacokinetics of anthraquinones were profiled. Key interaction mechanisms were investigated using the everted intestinal sac model, the breast cancer resistance protein (BCRP)-overexpressing MDCKII cells, and molecular docking simulations. Results: DHXSD provided significantly stronger hepatoprotection than its principal herb Rheum palmatum L. (DaHuang, DH) alone. This enhanced efficacy correlated with an approximate 2-fold increase in the systemic exposure of rhein compared to DH monotherapy. We identified berberine from Phellodendron amurense Rupr. (Huang Bo, HB) as the key synergist, which potently inhibited the BCRP efflux transporter, thereby enhancing rhein absorption. In contrast, geniposide from Gardenia jasminoides Ellis (Zhi Zi, ZZ) showed minimal effects. Conclusions: This work elucidates a concrete, transporter-mediated pharmacokinetic interaction as the core mechanism underlying herbal synergy in DHXSD. Our findings offer a rational strategy\u2014targeted efflux transporter modulation\u2014for improving the oral bioavailability of challenging drug molecules.<\/jats:p>","DOI":"10.3390\/ph19030492","type":"journal-article","created":{"date-parts":[[2026,3,17]],"date-time":"2026-03-17T09:35:57Z","timestamp":1773740157000},"page":"492","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Berberine-Mediated BCRP Inhibition Enhances Systemic Exposure of Rhein: A Study to Unravel the Pharmacokinetic Basis of Synergy in Da-Huang-Xiao-Shi Decoction"],"prefix":"10.3390","volume":"19","author":[{"given":"Zhangyao","family":"Xu","sequence":"first","affiliation":[{"name":"Science and Technology Experimental Center, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China"},{"name":"Department of Pharmacy, Eye and ENT Hospital, Fudan University, Shanghai 200031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongyu","family":"Li","sequence":"additional","affiliation":[{"name":"Science and Technology Experimental Center, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haoyu","family":"Xue","sequence":"additional","affiliation":[{"name":"Science and Technology Experimental Center, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoge","family":"Wang","sequence":"additional","affiliation":[{"name":"Science and Technology Experimental Center, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tianming","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Pharmacology, School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9422-2450","authenticated-orcid":false,"given":"Yuyang","family":"Zhou","sequence":"additional","affiliation":[{"name":"Science and Technology Experimental Center, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China"},{"name":"Department of Pharmacology, Addiction Science, Toxicology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jifeng","family":"Gu","sequence":"additional","affiliation":[{"name":"Department of Pharmacy, Eye and ENT Hospital, Fudan University, Shanghai 200031, China"},{"name":"Shanghai Key Laboratory of Gene Editing and Cell Therapy for Rare Diseases, Shanghai 200031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rong","family":"Shi","sequence":"additional","affiliation":[{"name":"Science and Technology Experimental Center, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Wu, H., Chen, C., Ziani, S., Nelson, L.J., \u00c1vila, M.A., Nevzorova, Y.A., and Cubero, F.J. 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