Plasma membrane transporters and channels involved in hepatobiliary function
| Cells | Membrane | Protein | Gene | Substrates |
|---|---|---|---|---|
| Hepatocytes | Basolateral | NTCP | SLC10A1 | Bile acids |
| OATP1B1 | SLCO1B1 | Bile acids, organic anions | ||
| OATP1B3 | SLCO1B3 | Bile acids, organic anions | ||
| MRP3 | ABCC3 | Bile acids, organic anions | ||
| MRP4 | ABCC4 | Bile acids, organic anions | ||
| NBC4 | SLC4A5 | Na+/HCO3–symporter | ||
| NHE1 | SLC9A1 | Na+/H+ antiporter | ||
| SK2 | KCNN2 | K+ channel | ||
| BSC | SLC12A2 | Na+/Cl– symporter | ||
| AQP9 | AQP9 | Water channel | ||
| Hepatocytes | Canalicular | BSEP | ABCB11 | Bile acids |
| MRP2 | ABCC2 | Organic anions | ||
| MDR1 | ABCB1 | Several | ||
| BCRP | ABCG2 | Bile acids, steroids | ||
| MDR3 | ABCB4 | Phosphatidyl choline | ||
| FIC1 | ATP8B1 | Phosphatidyl serine | ||
| ABCG5/G8 | ABCG5/G8 | Cholesterol | ||
| NHE3 | SLC9A3 | Na+/H+ antiporter | ||
| AQP8 | AQP8 | Water channel | ||
| Cholangiocytes | Basolateral | OSTα/β | SLC51A/B | Bile acids, organic anions |
| NHE1 | SLC9A1 | Na+/H+ antiporter | ||
| NDCBE | SLC4A8 | Cl–/HCO3– antiporter | ||
| SK2 | KCNN2 | K+ channel | ||
| BSC | SLC12A2 | Na+/Cl– symporter | ||
| MRP3 | ABCC3 | Bile acids, organic anions | ||
| MRP4 | ABCC4 | Bile acids, organic anions | ||
| AQP4 | AQP4 | Water channel | ||
| Cholangiocytes | Apical | ASBT | SLC10A2 | Bile acids |
| AE2 | SLC4A2 | Cl–/HCO3– antiporter | ||
| CFTR | ABCC7 | Cl– channel | ||
| NBC4 | SLC4A5 | Na+/HCO3– symporter | ||
| AQP1 | AQP1 | Water channel |
BCRP: breast cancer resistance protein; HCO3–: bicarbonate; KCNN2: potassium calcium-activated channel subfamily N member 2
MA: writing – review & editing; SOR and AMC: writing – original draft; JJGM: supervision.
The authors declare that they have no conflicts of interest.
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This study was funded by the CIBERehd (EHD15PI05/2016) and “Fondo de Investi-gaciones Sanitarias, Instituto de Salud Carlos III”, Spain (PI16/00598 and PI19/00819, co-funded by European Regional Development Fund/European Social Fund, “Investing in your future”); Spanish Ministry of Economy, Industry and Competitiveness (SAF2016-75197-R); “Junta de Cas-tilla y Leon” (SA063P17); AECC Scientific Foundation (2017/2020), Spain; “Proyectos de Investigación Modalidad C2”, University of Salamanca (18.K137/463AC01 and 18.K140/463AC01); “Centro Internacional sobre el Envejecimiento” (OLD-HEPAMARKER, 0348_CIE_6_E), Spain and Fundación University of Salamanca, Spain (PC-TCUE18-20_051); Fundació Marato TV3 (Ref. 201916-31). SOR was supported by a postdoctoral contract (FPU) funded by the “Junta de Castilla y Leon” (SA074P20). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
© The Author(s) 2022.