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Riaz H, Zheng B, Zheng Y, Liu Z, Gu HM, Imran M, Yaqoob T, Bhinder MA, Zhang DW, Zahoor MY. The spectrum of novel ABCB11 gene variations in children with progressive familial intrahepatic cholestasis type 2 in Pakistani cohorts. Sci Rep 2024; 14:18876. [PMID: 39143102 PMCID: PMC11324741 DOI: 10.1038/s41598-024-59945-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 04/17/2024] [Indexed: 08/16/2024] Open
Abstract
Progressive familial intrahepatic cholestasis (PFIC) is a rare childhood manifested disease associated with impaired bile secretion with severe pruritus yellow stool, and sometimes hepatosplenomegaly. PFIC is caused by mutations in ATP8B1, ABCB11, ABCB4, TJP2, NR1H4, SLC51A, USP53, KIF12, ZFYVE19, and MYO5B genes depending on its type. ABCB11 mutations lead to PFIC2 that encodes the bile salt export pump (BSEP). Different mutations of ABCB11 have been reported in different population groups but no data available in Pakistani population being a consanguineous one. We sequenced coding exons of the ABCB11 gene along with its flanking regions in 66 unrelated Pakistani children along with parents with PFIC2 phenotype. We identified 20 variations of ABCB11: 12 in homozygous form, one compound heterozygous, and seven heterozygous. These variants include 11 missenses, two frameshifts, two nonsense mutations, and five splicing variants. Seven variants are novel candidate variants and are not detected in any of the 120 chromosomes from normal ethnically matched individuals. Insilico analysis revealed that four homozygous missense variations have high pathogenic scores. Minigene analysis of splicing variants showed exon skipping and the addition of exon. This data is a useful addition to the disease variants genomic database and would be used in the future to build a diagnostic algorithm.
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Affiliation(s)
- Hafsa Riaz
- Department of Pediatrics, University of Alberta, Edmonton, Canada
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Bixia Zheng
- Department of Gastroenterology, Children's Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Yucan Zheng
- Department of Gastroenterology, Children's Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Zhifeng Liu
- Department of Gastroenterology, Children's Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Hong-Mei Gu
- Department of Pediatrics, University of Alberta, Edmonton, Canada
| | - Muhammad Imran
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Tahir Yaqoob
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Munir Ahmad Bhinder
- Department of Human Genetics and Molecular Biology, University of Health Sciences, Lahore, Pakistan
| | - Da-Wei Zhang
- Department of Pediatrics, University of Alberta, Edmonton, Canada.
| | - Muhammad Yasir Zahoor
- Institute of Biochemistry and Biotechnology, University of Veterinary and Animal Sciences, Lahore, Pakistan.
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Selim N, Omair H, El-Karaksy H, Fathy M, Mahmoud E, Baroudy S, Fathy M, Yassin N. A study of exons 14, 15, and 24 of the ABCB11 gene in Egyptian children with normal GGT cholestasis. Arab J Gastroenterol 2022; 23:15-19. [PMID: 35153175 DOI: 10.1016/j.ajg.2021.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 09/27/2021] [Accepted: 11/01/2021] [Indexed: 10/19/2022]
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Zhang C, Li S, Sun C, Liu L, Fang Y, Yang X, Pan X, Zhang B. Vitexin ameliorates glycochenodeoxycholate-induced hepatocyte injury through SIRT6 and JAK2/STAT3 pathways. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:1717-1725. [PMID: 35432812 PMCID: PMC8976905 DOI: 10.22038/ijbms.2021.59424.13196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 11/22/2021] [Indexed: 11/06/2022]
Abstract
Objectives Vitexin, a natural flavonoid, is commonly found in many foods and traditional herbal medicines and has clear health benefits. However, the role of vitexin in cholestasis is presently unclear. This study investigated whether vitexin mitigated glycochenodeoxycholate (GCDC)-induced hepatocyte injury and further elucidated the underlying mechanisms. Materials and Methods A cell counting kit-8 (CCK-8) assay was conducted to evaluate cell viability. The mitochondrial membrane potential (MMP, Δψm), reactive oxygen species (ROS) levels, and apoptosis rate of hepatocytes exposed to GCDC were detected by flow cytometry (FCM). We then measured the cytoprotective effects of vitexin against oxidative stress. The molecular signaling pathway was further investigated by using Western blotting and signaling pathway inhibitors. Results Here, we showed that vitexin increased cell viability and reduced cell apoptosis, necroptosis, and oxidative stress in a dose-dependent manner in GCDC-treated hepatocytes. In addition, by using selective inhibitors, we further confirmed that inhibition of the JAK2/STAT3 pathway by vitexin was mediated by prolonged activation of Sirtuin 6 (SIRT6). Conclusion Vitexin attenuated GCDC-induced hepatocyte injury via SIRT6 and the JAK2/STAT3 pathways.
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Affiliation(s)
- Chuang Zhang
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
| | - Suolin Li
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China,Corresponding author: Suolin Li. Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China. Tel: +8615803210526;
| | - Chi Sun
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
| | - Lin Liu
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
| | - Yanbin Fang
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
| | - Xiaofeng Yang
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
| | - Xingxin Pan
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
| | - Ben Zhang
- Department of Pediatric Surgery, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China
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Van Tung N, Lien NTK, Lan NN, Mai NTP, Yen PTH, Hoa NPA, Hoang NH. The role of p.Val444Ala variant in the ABCB11 gene and susceptibility to biliary atresia in Vietnamese patients. Medicine (Baltimore) 2021; 100:e28011. [PMID: 34964797 PMCID: PMC8615439 DOI: 10.1097/md.0000000000028011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 11/11/2021] [Indexed: 11/26/2022] Open
Abstract
Biliary atresia (BA) is the most serious type of obstructive cholangiopathy that occurs in infants. BA can be the cause of death in children under 2 years if untreated early. However, the etiology of the disease is not known. BA is considered to be the result of the destruction of the bile duct system including the accumulation of bile acids. The bile salt export pump, a transporter protein encoded by the ABCB11 gene, plays the main role in the exportation and accumulation of bile acids. The p.Val444Ala variant in this gene is known to be associated with many cholestatic diseases. However, to date no study have been performed to evaluate the association of this variant with susceptibility to the risk of BA. In this study, we aimed to identify the frequency of p.Val444Ala variant and the risk of BA in Vietnamese patients.The polymerase chain reaction (PCR)- restriction fragment length polymorphism method was used to determine the frequency of alleles c.1331T>C (p.Val444Ala, rs2287622) in the ABCB11 gene in 266 Vietnamese patients with BA and 150 healthy people. The gene segment containing the variant was amplified by PCR with specific primers, after that the PCR products were cut by HaeIII restriction enzyme and analyzed on agarose gel to determine the genotypes. The frequency of alleles was assessed statistically to determine the association between these alleles and the risk of disease in patients.In our study, the frequency of alleles c.1331T>C (p.Val444Ala, rs2287622) in the ABCB11 gene was investigated the first time in the patients with BA. The results showed that CC and TC genotypes were significantly different between BA patients and healthy people (P < .01), and the C allele was associated with an increased risk of BA (odds ratio = 2.47; 95% confidence interval: 1.84-3.32; P < .01). The initial results of clinical, biochemical, and genetic analysis in our study suggested that the p.Val444Ala variant in the ABCB11 gene may be a susceptibility factor for the disease in Vietnamese patients with BA. These results provided new insights into the role of this ABCB11 variant in the pathogenesis of BA.
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Affiliation(s)
- Nguyen Van Tung
- Institute of Genome Research, Vietnam Academy of Science and Technology, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Vietnam
| | - Nguyen Thi Kim Lien
- Institute of Genome Research, Vietnam Academy of Science and Technology, Vietnam
| | - Nguyen Ngoc Lan
- Institute of Genome Research, Vietnam Academy of Science and Technology, Vietnam
| | | | - Pham Thi Hai Yen
- Vietnam National Children's Hospital, Ministry of Health, Vietnam
| | | | - Nguyen Huy Hoang
- Institute of Genome Research, Vietnam Academy of Science and Technology, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Vietnam
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Kroll T, Prescher M, Smits SHJ, Schmitt L. Structure and Function of Hepatobiliary ATP Binding Cassette Transporters. Chem Rev 2020; 121:5240-5288. [PMID: 33201677 DOI: 10.1021/acs.chemrev.0c00659] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The liver is beyond any doubt the most important metabolic organ of the human body. This function requires an intensive crosstalk within liver cellular structures, but also with other organs. Membrane transport proteins are therefore of upmost importance as they represent the sensors and mediators that shuttle signals from outside to the inside of liver cells and/or vice versa. In this review, we summarize the known literature of liver transport proteins with a clear emphasis on functional and structural information on ATP binding cassette (ABC) transporters, which are expressed in the human liver. These primary active membrane transporters form one of the largest families of membrane proteins. In the liver, they play an essential role in for example bile formation or xenobiotic export. Our review provides a state of the art and comprehensive summary of the current knowledge of hepatobiliary ABC transporters. Clearly, our knowledge has improved with a breath-taking speed over the last few years and will expand further. Thus, this review will provide the status quo and will lay the foundation for new and exciting avenues in liver membrane transporter research.
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Affiliation(s)
- Tim Kroll
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Martin Prescher
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Sander H J Smits
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,Center for Structural Studies, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Lutz Schmitt
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
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Schreiner P, Stieger B, McLin V, Rougemont AL, Keitel V, Dröge C, Müllhaupt B. A rare cause of a cholestatic jaundice in a North African teenager. Liver Int 2019; 39:2036-2041. [PMID: 31021034 DOI: 10.1111/liv.14122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/18/2019] [Accepted: 03/31/2019] [Indexed: 02/06/2023]
Abstract
We report an unusual case of intermittent episodes of cholestasis in a young patient. The cholestatic attacks were preceded in each case by an infection and subsequent antibiotic therapies. After ruling out many possible causes of cholestatic hepatitis, the differential diagnoses were a benign recurrent intrahepatic cholestasis or a drug-induced liver injury. We discuss here the diagnostic approach and interpretation of the genetic analysis.
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Affiliation(s)
- Philipp Schreiner
- Division of Gastroenterology and Hepatology, University Hospital of Zurich, Zurich, Switzerland
| | - Bruno Stieger
- Division of Clinical Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
| | - Valérie McLin
- Swiss Pediatric Liver Center, University Hospitals Geneva, Geneva, Switzerland
| | - Anne-Laure Rougemont
- Diagnostic Department, Division of Clinical Pathology, University Hospitals Geneva, Geneva, Switzerland
| | - Verena Keitel
- Department of Gastroenterology, Hepatology, and Infectious Diseases, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Carola Dröge
- Department of Gastroenterology, Hepatology, and Infectious Diseases, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Beat Müllhaupt
- Division of Gastroenterology and Hepatology, University Hospital of Zurich, Zurich, Switzerland
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Ali I, Khalid S, Stieger B, Brouwer KLR. Effect of a Common Genetic Variant (p.V444A) in the Bile Salt Export Pump on the Inhibition of Bile Acid Transport by Cholestatic Medications. Mol Pharm 2019; 16:1406-1411. [PMID: 30608704 DOI: 10.1021/acs.molpharmaceut.8b01124] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The bile salt export pump (BSEP) is the primary canalicular transporter responsible for the secretion of bile acids from hepatocytes into bile canaliculi, and inhibition of this transporter has been associated with drug-induced liver injury (DILI). A common variant (rs2287622; p.V444A) in the gene encoding BSEP has been associated with an increased risk of cholestatic DILI. Although p.444V BSEP (reference) and p.444A BSEP (variant) do not differ in their transport kinetics of taurocholic acid (TCA), transport of the more abundant glycocholic acid (GCA) has not been investigated. Importantly, differences in the susceptibility of p.444V and p.444A BSEP to inhibition by drugs causing cholestatic DILI have not been investigated. To address these issues, the transport kinetics of GCA were evaluated by incubating membrane vesicles expressing either p.444V or p.444A BSEP with GCA over a range of concentrations (1, 10, 25, 50, and 100 μM). The abilities of commonly used cholestatic medications to inhibit the transport of TCA and GCA by the reference and variant proteins were compared. Resulting data indicated that GCA transport kinetics for reference and variant BSEP followed Michaelis-Menten kinetics and were not statistically different [ Vmax values of 1132 ± 246 and 959 ± 256 pmol min-1 (mg of protein)-1, respectively, and Km values of 32.7 ± 18.2 and 45.7 ± 25.5 μM, respectively]. There were no statistically significant differences between the reference and variant BSEP in the inhibition of TCA or GCA transport by the cholestatic drugs tested. In conclusion, differential inhibition of TCA or GCA transport cannot account for an association between the variant BSEP and the risk for cholestatic DILI due to the drugs tested.
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Affiliation(s)
- Izna Ali
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Seher Khalid
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
| | - Bruno Stieger
- Department of Clinical Pharmacology and Toxicology , University Hospital Zurich, University of Zurich , 8091 Zurich , Switzerland
| | - Kim L R Brouwer
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599 , United States
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Gan L, Pan S, Cui J, Bai J, Jiang P, He Y. Functional analysis of the correlation between ABCB11 gene mutation and primary intrahepatic stone. Mol Med Rep 2018; 19:195-204. [PMID: 30431138 PMCID: PMC6297787 DOI: 10.3892/mmr.2018.9661] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 10/22/2018] [Indexed: 12/16/2022] Open
Abstract
The adenosine 5'‑triphosphate binding cassette subfamily B member (ABCB)11 gene is involved in bile transport, and mutations in this gene are associated with cholestasis and cholelithiasis. Therefore, the aim of the present study was to investigate the association between ABCB11 gene mutation and primary intrahepatic stone (PIS)s and to investigate the mechanism through which ABCB11 gene mutations affect the expression of the corresponding protein. Mutations of the ABCB11 gene in 443 PIS patients and 560 healthy participants were detected by exon sequencing. The expression levels of ABCB11 mRNA and bile salt export pump (BSEP) protein in the liver tissues of patients with PISs were measured by quantitative polymerase chain reaction and western blot analysis. The mutant plasmids constructed by site‑directed mutagenesis of the human BSEP gene were transfected into human embryonic kidney 293 (293) cells and Madin‑Darby canine kidney (MDCK) cells, and the expression and distribution of rs118109635 of BSEP was measured. There were two significant mutations in the ABCB11 gene of the PIS patients compared with the healthy population; a missense mutation, rs118109635 (P=0.025), and a synonymous mutation, rs497692 (P=0.006). The two mutations were associated with the occurrence of preoperative jaundice (P=0.026, and P=0.011, respectively). The expression levels of BSEP in PIS patients with the missense mutation rs118109635 was decreased, whereas its mRNA expression levels remained unchanged. In PIS patients with the synonymous mutation rs497692, the expression levels of ABCB11 were decreased at both the mRNA and protein level. It was also found that mutation A865V reduced the expression levels of BSEP in 293 cells at the cellular level; its distribution in MDCK cell membranes was decreased, whereas its mRNA levels remained unchanged. The mutated loci at rs118109635 and rs497692 of the ABCB11 gene were correlated with PISs, causing a decreased expression of BSEP and reduced distribution of the protein in the cell membrane. Therefore, mutations at rs118109635 and rs497692 of the ABCB11 gene may be risk factors for PISs.
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Affiliation(s)
- Lang Gan
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
| | - Shuguang Pan
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
| | - Jinchi Cui
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
| | - Jie Bai
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
| | - Peng Jiang
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
| | - Yu He
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, P.R. China
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Kularatnam GAM, Warawitage D, Vidanapathirana DM, Jayasena S, Jasinge E, de Silva N, Liyanarachchi KLAMS, Wickramasinghe P, Devgun MS, Barbu V, Lascols O. Dubin-Johnson syndrome and intrahepatic cholestasis of pregnancy in a Sri Lankan family: a case report. BMC Res Notes 2017; 10:487. [PMID: 28923092 PMCID: PMC5604299 DOI: 10.1186/s13104-017-2811-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/12/2017] [Indexed: 02/06/2023] Open
Abstract
Background Dubin–Johnson syndrome and intrahepatic cholestasis of pregnancy are rare chronic liver disorders. Dubin–Johnson syndrome may manifest as conjugated hyperbilirubinemia, darkly pigmented liver, presence of abnormal pigment in the parenchyma of hepatocytes and abnormal distribution of the coproporphyrin isomers I and III in the urine. Intrahepatic cholestatic jaundice of pregnancy presents as pruritus, abnormal liver biochemistry and increased serum bile acids. Case presentation A Sri Lankan girl presented with recurrent episodes of jaundice. She had conjugated hyperbilirubinaemia with diffuse, coarse brown pigments in the hepatocytes. Urine coproporphyrin examination suggested Dubin–Johnson syndrome. Genetic studies confirmed missense homozygous variant p.Trp709Arg in the ATP-binding cassette sub-family C member 2 gene ABCC2 that encodes the Multidrug resistance-associated protein 2 that causes Dubin–Johnson syndrome. The gene study of the mother revealed the same missense variant in ABCC2/MRP2 but with a heterozygous status, and in addition a homozygous missense variant p.Val444Ala in the ATP-binding cassette, sub-family B member 11 gene ABCB11 that encodes the bile salt export pump. Conclusion Dubin–Johnson syndrome should be considered when the common causes for conjugated hyperbilirubinaemia have been excluded, and patient has an increased percentage of direct bilirubin relative to total bilirubin concentration. Its early diagnosis prevents repeated hospital admissions and investigations. Knowledge of a well known homozygous variant in ABCB11 gene could help in the management of pregnancy.
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Affiliation(s)
| | - Dilanthi Warawitage
- Department of Chemical Pathology, Lady Ridgeway Hospital for Children, Colombo, Sri Lanka
| | | | - Subashini Jayasena
- Department of Chemical Pathology, Lady Ridgeway Hospital for Children, Colombo, Sri Lanka
| | - Eresha Jasinge
- Department of Chemical Pathology, Lady Ridgeway Hospital for Children, Colombo, Sri Lanka
| | | | | | - Pujitha Wickramasinghe
- Department of Paediatrics, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Manjit Singh Devgun
- Clinical Laboratories, Department of Biochemistry, Wishaw General Hospital, Wishaw, Lanarkshire, ML2 0DP, UK
| | - Veronique Barbu
- Laboratoire Commun de Biologie et de Génétique Moléculaires, Hôpital Saint-Antoine, 184, rue du Faubourg Saint-Antoine, 75012, Paris, France
| | - Olivier Lascols
- Laboratoire Commun de Biologie et de Génétique Moléculaires, Hôpital Saint-Antoine, 184, rue du Faubourg Saint-Antoine, 75012, Paris, France
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Lee SJ, Kim JE, Choe BH, Seo AN, Bae HI, Hwang SK. Early Diagnosis of ABCB11 Spectrum Liver Disorders by Next Generation Sequencing. Pediatr Gastroenterol Hepatol Nutr 2017; 20:114-123. [PMID: 28730136 PMCID: PMC5517378 DOI: 10.5223/pghn.2017.20.2.114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 10/21/2016] [Indexed: 01/27/2023] Open
Abstract
PURPOSE The goal of this study was the early diagnosis of ABCB11 spectrum liver disorders, especially those focused on benign recurrent intrahepatic cholestasis and progressive familial intrahepatic cholestasis. METHODS Fifty patients presenting neonatal cholestasis were evaluated to identify underlying etiologies. Genetic analysis was performed on patients suspected to have syndromic diseases or ABCB11 spectrum liver disorders. Two families with proven ABCB11 spectrum liver disorders were subjected to genetic analyses to confirm the diagnosis and were provided genetic counseling. Whole exome sequencing and Sanger sequencing were performed on the patients and the family members. RESULTS Idiopathic or viral hepatitis was diagnosed in 34%, metabolic disease in 20%, total parenteral nutrition induced cholestasis in 16%, extrahepatic biliary atresia in 14%, genetic disease in 10%, neonatal lupus in 2%, congenital syphilis in 2%, and choledochal cyst in 2% of the patients. The patient with progressive familial intrahepatic cholestasis had novel heterozygous mutations of ABCB11 c.11C>G (p.Ser4*) and c.1543A>G (p.Asn515Asp). The patient with benign recurrent intrahepatic cholestasis had homozygous mutations of ABCB11 c.1331T>C (p.Val444Ala) and heterozygous, c.3084A>G (p.Ala1028Ala). Genetic confirmation of ABCB11 spectrum liver disorder led to early liver transplantation in the progressive familial intrahepatic cholestasis patient. In addition, the atypically severe benign recurrent intrahepatic cholestasis patient was able to avoid unnecessary liver transplantation after genetic analysis. CONCLUSION ABCB11 spectrum liver disorders can be clinically indistinguishable as they share similar characteristics related to acute episodes. A comprehensive genetic analysis will facilitate optimal diagnosis and treatment.
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Affiliation(s)
- Su Jeong Lee
- Department of Pediatrics, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jung Eun Kim
- Department of Pediatrics, Kyungpook National University School of Medicine, Daegu, Korea
| | - Byung-Ho Choe
- Department of Pediatrics, Kyungpook National University School of Medicine, Daegu, Korea
| | - An Na Seo
- Department of Pathology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Han-Ik Bae
- Department of Pathology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Su-Kyeong Hwang
- Department of Pediatrics, Kyungpook National University School of Medicine, Daegu, Korea
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Lei JH, Yang X, Xiao XQ, Chen Z, Peng F. A preliminary investigation on single nucleotide polymorphism rs2287622 of bile salt export pump gene in patients with chronic hepatitis C virus infection in Hunan, China. BMC Gastroenterol 2017; 17:42. [PMID: 28292275 PMCID: PMC5351046 DOI: 10.1186/s12876-017-0594-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 03/01/2017] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND European researchers have underscored associations between single nucleotide polymorphism (SNP) rs2287622 of the hepatobiliary bile salt export pump (BSEP) gene and the risk of hepatitis C virus (HCV) infection. The distributions of SNP rs2287622 are racially specific. This study was aimed to preliminarily investigate the distribution of BSEP gene SNP rs2287622 in the Han patients with chronic HCV-infection (CHC) in Hunan, China. METHODS BSEP gene SNP rs2287622 of 165 CHC patients, 99 patients with chronic hepatitis B virus infection (CHB) and 99 healthy individuals were analyzed by polymerase chain reaction-restriction fragment length polymorphism analysis and nucleotide sequencing. RESULTS The overall frequencies of the C allele of BESP gene SNP rs2287622 in the CHC patients, CHB patients and healthy individuals were 74.2, 72.7 and 74.2%, respectively (P > 0.05). The overall odds ratios (ORs) aiming at predicting CHC risk by comparing the ratios of the frequency distribution of alleles or genotypes in the CHC group with those in the non-CHC group had no statistical significance (P > 0.05). However, the CHC ORs of CC vs TT, TC vs TT and CC + CT vs TT among the individuals aged over 40 years were 2.680, 3.122 and 2.824 respectively (P < 0.05), and the higher risk did not relate to gender, HCV genotypes and presence of HCV-related liver cirrhosis. CONCLUSIONS Among the Han individuals aged over 40 years in Hunan, China, genotype CC or CT of BSEP gene SNP rs2287622 may correlate with higher risk of CHC in comparison with genotype TT. Further study with a larger cohort is essential.
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Affiliation(s)
- Jian-Hua Lei
- Department of Infectious Diseases, the Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China.
| | - Xu Yang
- Department of Infectious Diseases, the Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
| | - Xin-Qiang Xiao
- Department of Infectious Diseases, the Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
| | - Zi Chen
- Department of Infectious Diseases, the Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
| | - Feng Peng
- Department of Infectious Diseases, the Second Xiangya Hospital, Central South University, No.139 Middle Renmin Road, Changsha, Hunan, 410011, People's Republic of China
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Park JS, Ko JS, Seo JK, Moon JS, Park SS. Clinical and ABCB11 profiles in Korean infants with progressive familial intrahepatic cholestasis. World J Gastroenterol 2016; 22:4901-4907. [PMID: 27239116 PMCID: PMC4873882 DOI: 10.3748/wjg.v22.i20.4901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 02/29/2016] [Accepted: 03/14/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate clinical profiles and mutations of ABCB11 in Koreans with progressive familial intrahepatic cholestasis 2 and review the differences between Koreans and others.
METHODS: Of 47 patients with neonatal cholestasis, five infants had chronic intrahepatic cholestasis with normal γ-glutamyl transpeptidase. Direct sequencing analyses of ABCB11, including exons and introns, were performed from peripheral blood.
RESULTS: Living donor-liver transplantation was performed in four patients because of rapidly progressive hepatic failure and hepatocellular carcinoma. Three missense mutations were found in two patients: compound heterozygous 677C>T (S226L)/3007G>A (G1003R) and heterozygous 2296G>A (G766R). The mutations were located near and in the transmembranous space.
CONCLUSION: Alterations in the transmembrane of the bile salt export pump in the Korean infants were different from those previously reported in Chinese, Japanease, Taiwanese, and European patients.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 11
- ATP-Binding Cassette Transporters/genetics
- Asian People/genetics
- Biopsy
- Carcinoma, Hepatocellular/diagnostic imaging
- Carcinoma, Hepatocellular/ethnology
- Carcinoma, Hepatocellular/genetics
- Cholestasis, Intrahepatic/diagnostic imaging
- Cholestasis, Intrahepatic/ethnology
- Cholestasis, Intrahepatic/genetics
- Cholestasis, Intrahepatic/surgery
- DNA Mutational Analysis
- Disease Progression
- Female
- Gallstones/diagnostic imaging
- Gallstones/ethnology
- Gallstones/genetics
- Genetic Association Studies
- Genetic Predisposition to Disease
- Heterozygote
- Humans
- Infant
- Infant, Newborn
- Liver Transplantation/methods
- Living Donors
- Male
- Microscopy, Electron
- Mutation, Missense
- Phenotype
- Prognosis
- Republic of Korea
- Retrospective Studies
- Tomography, X-Ray Computed
- Ultrasonography
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