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Lin LZ, Wu QY, Zhang JH, Li SJ, Wu WZ, Ruan DD, Wu M, Chen Q, Liao LS, Fang ZT, Luo JW, Li ZA, Li Z, Li H. A pedigree analysis of Rotor hyperbilirubinemia combined with hepatitis B virus infection in a SLCO1B1 and SLCO1B3 gene mutations patient. Heliyon 2024; 10:e33864. [PMID: 39071607 PMCID: PMC11283089 DOI: 10.1016/j.heliyon.2024.e33864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/21/2024] [Accepted: 06/28/2024] [Indexed: 07/30/2024] Open
Abstract
Background Rotor syndrome (RS, OMIM#237450) is an extremely rare autosomal digenic recessive disorder characterized by mild non-hemolytic hereditary conjugated hyperbilirubinemia, caused by biallelic variation of SLCO1B1 and SLCO1B3 genes that resulted in OATP1B1/B3 dysfunction in the sinusoidal membrane leading to impaired bilirubin reuptake ability of hepatocytes. Methods One RS pedigree was recruited and clinical features were documented. Whole genome second-generation sequencing was used to screen candidate genes and mutations, Sanger sequencing confirmed predicted mutations. Results This study detected a homozygous nonsense variant c.1738C > T (p.R580*) in the coding region of the SLCO1B1 (NM006446) gene in a family with RS and hepatitis B virus infection by Variants analysis and Sanger sequencing, and confirmed by Copy Number Variation (CNV) analysis and Long Range PCR that there was a homozygous insertion of intron 5 of the SLCO1B3 gene into intron 5 of long-interspersed element 1 (LINE1). A few cases of such haplotypes have been reported in East Asian populations. A hepatitis B virus infection with fatty liver disease was indicated by pathology, which revealed mild-moderate lobular inflammation, moderate lobular inflammation, moderate hepatocellular steatosis, and fibrosis stage 1-2 (NAS score: 4 points/S1-2) alterations. Heterozygotes carrying p.R580* and LINE1 insertions were also detected in family members (I1, I2, III2, III3), but they did not develop conjugated hyperbilirubinemia. Conclusion The mutations may be the molecular genetic foundation for the presence of SLCO1B1 c.1738C > T(p.R580*) and SLCO1B3 (LINE1) in this RS pedigree.
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Affiliation(s)
- Li-zhen Lin
- Department of Traditional Chinese Medicine, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China
- Department of Traditional Chinese Medicine, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350212, China
| | - Qiu-yan Wu
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Jian-hui Zhang
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Shi-jie Li
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Wei-zhen Wu
- Xiyuan Clinical Medical College of Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Dan-dan Ruan
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Min Wu
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Qian Chen
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Li-sheng Liao
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Zhu-Ting Fang
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
| | - Jie-wei Luo
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
- Department of Traditional Chinese Medicine, Fujian Provincial Hospital, Fuzhou, 350001, China
| | - Zuo-an Li
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
- Department of Emergency, Fujian provincial hospital, Fuzhou, 350001, China
- Fujian Provincial Key Laboratory of Emergency Medicine, Fujian Provincial Institute of Emergency Medicine, Fujian Emergency Medical Center, Fuzhou, 350001, China
| | - Zhou Li
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
- Department of Traditional Chinese Medicine, Fujian Provincial Hospital, Fuzhou, 350001, China
| | - Hong Li
- Fujian provincial hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China
- Department of Emergency, Fujian provincial hospital, Fuzhou, 350001, China
- Fujian Provincial Key Laboratory of Emergency Medicine, Fujian Provincial Institute of Emergency Medicine, Fujian Emergency Medical Center, Fuzhou, 350001, China
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Shen H, Dai J, Liu T, Cheng Y, Chen W, Freeden C, Zhang Y, Humphreys WG, Marathe P, Lai Y. Coproporphyrins I and III as Functional Markers of OATP1B Activity: In Vitro and In Vivo Evaluation in Preclinical Species. ACTA ACUST UNITED AC 2016; 357:382-93. [DOI: 10.1124/jpet.116.232066] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 02/12/2016] [Indexed: 01/01/2023]
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Li XL, Guo ZT, Wang YD, Chen XY, Liu J, Zhong DF. Potential role of organic anion transporting polypeptide 1B1 (OATP1B1) in the selective hepatic uptake of hematoporphyrin monomethyl ether isomers. Acta Pharmacol Sin 2015; 36:268-80. [PMID: 25418376 DOI: 10.1038/aps.2014.104] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 08/29/2014] [Indexed: 01/07/2023] Open
Abstract
AIM Hematoporphyrin monomethyl ether (HMME), which consists of equal amounts of isomers HMME-1 and HMME-2, is a novel porphyrin-related drug for photodynamic therapy. This study was aimed to investigate the uptake transporter-mediated selective uptake of HMME into the liver and to identify the major uptake transporter isoforms involved. METHODS Adult SD rats were intravenously injected with a single dose of HMME (5 mg/kg) with or without rifampicin (an inhibitor of organic anion transporting polypeptides OATP1B1 and OATP1B3, 25 mg/kg). Blood samples were collected, and HMME concentrations were measured using LC-MS/MS. Rat hepatocytes, human hepatocytes and HEK293 cells expressing OATP1B1, OATP1B3, or OATP2B1 were used to investigate the uptake of HMME or individual isomers in vitro. RESULTS Co-administration of rifampicin significantly increased the exposure of HMME isomers, and decreased the AUC ratio of HMME-1 to HMME-2 from 1.98 to 1.56. The uptake of HMME-2 into human hepatocytes and the HEK293 cells expressing OATP1B1 or OATP2B1 in vitro was 2-7 times greater than that of HMME-1, whereas OATP1B3 mediated a higher HMME-1 uptake. OATP1B1 exhibited a higher affinity for HMME-2 than for HMME-1 (the Km values were 0.63 and 5.61 μmol/L, respectively), which were similar to those in human hepatocytes. By using telmisartan (a non-specific OATP inhibitor) and rifampicin, OATP2B1 was demonstrated to account for <20% of hepatic HMME uptake. CONCLUSION OATP1B1 is the major transporter involved in the rapid hepatic uptake of HMME, and the greater uptake of HMME-2 by OATP1B1 may lead to a lower exposure of HMME-2 than HMME-1 in humans.
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Erlinger S, Arias IM, Dhumeaux D. Inherited disorders of bilirubin transport and conjugation: new insights into molecular mechanisms and consequences. Gastroenterology 2014; 146:1625-38. [PMID: 24704527 DOI: 10.1053/j.gastro.2014.03.047] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Revised: 03/12/2014] [Accepted: 03/23/2014] [Indexed: 12/11/2022]
Abstract
Inherited disorders of bilirubin metabolism might reduce bilirubin uptake by hepatocytes, bilirubin conjugation, or secretion of bilirubin into bile. Reductions in uptake could increase levels of unconjugated or conjugated bilirubin (Rotor syndrome). Defects in bilirubin conjugation could increase levels of unconjugated bilirubin; the effects can be benign and frequent (Gilbert syndrome) or rare but severe, increasing the risk of bilirubin encephalopathy (Crigler-Najjar syndrome). Impairment of bilirubin secretion leads to accumulation of conjugated bilirubin (Dubin-Johnson syndrome). We review the genetic causes and pathophysiology of disorders of bilirubin transport and conjugation as well as clinical and therapeutic aspects. We also discuss the possible mechanisms by which hyperbilirubinemia protects against cardiovascular disease and the metabolic syndrome and the effects of specific genetic variants on drug metabolism and cancer development.
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Affiliation(s)
| | | | - Daniel Dhumeaux
- Henri Mondor Hospital, Créteil, University of Paris-Est, Créteil, France
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van de Steeg E, Stránecký V, Hartmannová H, Nosková L, Hřebíček M, Wagenaar E, van Esch A, de Waart DR, Oude Elferink RPJ, Kenworthy KE, Sticová E, al-Edreesi M, Knisely AS, Kmoch S, Jirsa M, Schinkel AH. Complete OATP1B1 and OATP1B3 deficiency causes human Rotor syndrome by interrupting conjugated bilirubin reuptake into the liver. J Clin Invest 2012; 122:519-28. [PMID: 22232210 DOI: 10.1172/jci59526] [Citation(s) in RCA: 247] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Accepted: 11/30/2011] [Indexed: 12/21/2022] Open
Abstract
Bilirubin, a breakdown product of heme, is normally glucuronidated and excreted by the liver into bile. Failure of this system can lead to a buildup of conjugated bilirubin in the blood, resulting in jaundice. The mechanistic basis of bilirubin excretion and hyperbilirubinemia syndromes is largely understood, but that of Rotor syndrome, an autosomal recessive disorder characterized by conjugated hyperbilirubinemia, coproporphyrinuria, and near-absent hepatic uptake of anionic diagnostics, has remained enigmatic. Here, we analyzed 8 Rotor-syndrome families and found that Rotor syndrome was linked to mutations predicted to cause complete and simultaneous deficiencies of the organic anion transporting polypeptides OATP1B1 and OATP1B3. These important detoxification-limiting proteins mediate uptake and clearance of countless drugs and drug conjugates across the sinusoidal hepatocyte membrane. OATP1B1 polymorphisms have previously been linked to drug hypersensitivities. Using mice deficient in Oatp1a/1b and in the multispecific sinusoidal export pump Abcc3, we found that Abcc3 secretes bilirubin conjugates into the blood, while Oatp1a/1b transporters mediate their hepatic reuptake. Transgenic expression of human OATP1B1 or OATP1B3 restored the function of this detoxification-enhancing liver-blood shuttle in Oatp1a/1b-deficient mice. Within liver lobules, this shuttle may allow flexible transfer of bilirubin conjugates (and probably also drug conjugates) formed in upstream hepatocytes to downstream hepatocytes, thereby preventing local saturation of further detoxification processes and hepatocyte toxic injury. Thus, disruption of hepatic reuptake of bilirubin glucuronide due to coexisting OATP1B1 and OATP1B3 deficiencies explains Rotor-type hyperbilirubinemia. Moreover, OATP1B1 and OATP1B3 null mutations may confer substantial drug toxicity risks.
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Affiliation(s)
- Evita van de Steeg
- Division of Molecular Biology, The Netherlands Cancer Institute, Amsterdam, The Netherlands
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