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Chen DQ, Xie Y, Cao LQ, Fleishman JS, Chen Y, Wu T, Yang DH. The role of ABCC10/MRP7 in anti-cancer drug resistance and beyond. Drug Resist Updat 2024; 73:101062. [PMID: 38330827 DOI: 10.1016/j.drup.2024.101062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 02/10/2024]
Abstract
Multidrug resistance protein 7 (MRP7), also known as ATP-binding cassette (ABC) transporter subfamily C10 (ABCC10), is an ABC transporter that was first identified in 2001. ABCC10/MRP7 is a 171 kDa protein located on the basolateral membrane of cells. ABCC10/MRP7 consists of three transmembrane domains and two nucleotide binding domains. It mediates multidrug resistance of tumor cells to a variety of anticancer drugs by increasing drug efflux and results in reducing intracellular drug accumulation. The transport substrates of ABCC10/MRP7 include antineoplastic drugs such as taxanes, vinca alkaloids, and epothilone B, as well as endobiotics such as leukotriene C4 (LTC4) and estradiol 17 β-D-glucuronide. A variety of ABCC10/MRP7 inhibitors, including cepharanthine, imatinib, erlotinib, tariquidar, and sildenafil, can reverse ABCC10/MRP7-mediated MDR. Additionally, the presence or absence of ABCC10/MRP7 is also closely related to renal tubular dysfunction, obesity, and other diseases. In this review, we discuss: 1) Structure and functions of ABCC10/MRP7; 2) Known substrates and inhibitors of ABCC10/MRP7 and their potential therapeutic applications in cancer; and 3) Role of ABCC10/MRP7 in non-cancerous diseases.
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Affiliation(s)
- Da-Qian Chen
- Department of Medical Oncology, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong 518100, China
| | - Yuhao Xie
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA
| | - Lu-Qi Cao
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA; Institute for Biotechnology, St. John's University, Queens, NY 11439, USA
| | - Joshua S Fleishman
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA
| | - Yang Chen
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Tiesong Wu
- Department of Pharmacy, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong 518100, China.
| | - Dong-Hua Yang
- Department of Medical Oncology, Shenzhen Longhua District Central Hospital, Shenzhen, Guangdong 518100, China; New York College of Traditional Chinese Medicine, Mineola, NY 11501, USA.
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Moon DO. Exploring the Role of Surface and Mitochondrial ATP-Sensitive Potassium Channels in Cancer: From Cellular Functions to Therapeutic Potentials. Int J Mol Sci 2024; 25:2129. [PMID: 38396807 PMCID: PMC10888650 DOI: 10.3390/ijms25042129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
ATP-sensitive potassium (KATP) channels are found in plasma membranes and mitochondria. These channels are a type of ion channel that is regulated by the intracellular concentration of adenosine triphosphate (ATP) and other nucleotides. In cell membranes, they play a crucial role in linking metabolic activity to electrical activity, especially in tissues like the heart and pancreas. In mitochondria, KATP channels are involved in protecting cells against ischemic damage and regulating mitochondrial function. This review delves into the role of KATP channels in cancer biology, underscoring their critical function. Notably responsive to changes in cellular metabolism, KATP channels link metabolic states to electrical activity, a feature that becomes particularly significant in cancer cells. These cells, characterized by uncontrolled growth, necessitate unique metabolic and signaling pathways, differing fundamentally from normal cells. Our review explores the intricate roles of KATP channels in influencing the metabolic and ionic balance within cancerous cells, detailing their structural and operational mechanisms. We highlight the channels' impact on cancer cell survival, proliferation, and the potential of KATP channels as therapeutic targets in oncology. This includes the challenges in targeting these channels due to their widespread presence in various tissues and the need for personalized treatment strategies. By integrating molecular biology, physiology, and pharmacology perspectives, the review aims to enhance the understanding of cancer as a complex metabolic disease and to open new research and treatment avenues by focusing on KATP channels. This comprehensive approach provides valuable insights into the potential of KATP channels in developing innovative cancer treatments.
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Affiliation(s)
- Dong-Oh Moon
- Department of Biology Education, Daegu University, 201, Daegudae-ro, Gyeongsan-si 38453, Gyeongsangbuk-do, Republic of Korea
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Matera I, Miglionico R, Abruzzese V, Marchese G, Ventola GM, Castiglione Morelli MA, Bisaccia F, Ostuni A. A Regulator Role for the ATP-Binding Cassette Subfamily C Member 6 Transporter in HepG2 Cells: Effect on the Dynamics of Cell-Cell and Cell-Matrix Interactions. Int J Mol Sci 2023; 24:16391. [PMID: 38003580 PMCID: PMC10670978 DOI: 10.3390/ijms242216391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
There is growing evidence that various ATP-binding cassette (ABC) transporters contribute to the growth and development of tumors, but relatively little is known about how the ABC transporter family behaves in hepatocellular carcinoma (HCC), one of the most common cancers worldwide. Cellular model studies have shown that ABCC6, which belongs to the ABC subfamily C (ABCC), plays a role in the cytoskeleton rearrangement and migration of HepG2 hepatocarcinoma cells, thus highlighting its role in cancer biology. Deep knowledge on the molecular mechanisms underlying the observed results could provide therapeutic insights into the tumors in which ABCC6 is modulated. In this study, differential expression levels of mRNA transcripts between ABCC6-silenced HepG2 and control groups were measured, and subsequently, Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed. Real-Time PCR and Western blot analyses confirmed bioinformatics; functional studies support the molecular mechanisms underlying the observed effects. The results provide valuable information on the dysregulation of fundamental cellular processes, such as the focal adhesion pathway, which allowed us to obtain detailed information on the active role that the down-regulation of ABCC6 could play in the biology of liver tumors, as it is involved not only in cell migration but also in cell adhesion and invasion.
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Affiliation(s)
- Ilenia Matera
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (I.M.); (R.M.); (V.A.); (M.A.C.M.)
| | - Rocchina Miglionico
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (I.M.); (R.M.); (V.A.); (M.A.C.M.)
| | - Vittorio Abruzzese
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (I.M.); (R.M.); (V.A.); (M.A.C.M.)
| | - Giovanna Marchese
- Genomix4Life Srl, 84081 Baronissi, Italy; (G.M.); (G.M.V.)
- Genome Research Center for Health—CRGS, 84081 Baronissi, Italy
| | | | | | - Faustino Bisaccia
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (I.M.); (R.M.); (V.A.); (M.A.C.M.)
| | - Angela Ostuni
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (I.M.); (R.M.); (V.A.); (M.A.C.M.)
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Maqoud F, Zizzo N, Attimonelli M, Tinelli A, Passantino G, Antonacci M, Ranieri G, Tricarico D. Immunohistochemical, pharmacovigilance, and omics analyses reveal the involvement of ATP-sensitive K + channel subunits in cancers: role in drug-disease interactions. Front Pharmacol 2023; 14:1115543. [PMID: 37180726 PMCID: PMC10167295 DOI: 10.3389/fphar.2023.1115543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 04/10/2023] [Indexed: 05/16/2023] Open
Abstract
Background: ATP-sensitive-K+ channels (KATP) are involved in diseases, but their role in cancer is poorly described. Pituitary macroadenoma has been observed in Cantu' syndrome (C.S.), which is associated with the gain-of-function mutations of the ABCC9 and KCNJ8 genes. We tested the role of the ABCC8/Sur1, ABCC9/Sur2A/B, KCNJ11/Kir6.2, and KCNJ8/Kir6.1 genes experimentally in a minoxidil-induced renal tumor in male rats and in the female canine breast cancer, a spontaneous animal model of disease, and in the pharmacovigilance and omics databases. Methods: We performed biopsies from renal tissues of male rats (N = 5) following a sub-chronic high dosing topical administration of minoxidil (0.777-77.7 mg/kg/day) and from breast tissues of female dogs for diagnosis (N = 23) that were analyzed by immunohistochemistry. Pharmacovigilance and omics data were extracted from EudraVigilance and omics databases, respectively. Results: An elevated immunohistochemical reactivity to Sur2A-mAb was detected in the cytosol of the Ki67+/G3 cells other than in the surface membrane in the minoxidil-induced renal tumor and the breast tumor samples. KCNJ11, KCNJ8, and ABCC9 genes are upregulated in cancers but ABCC8 is downregulated. The Kir6.2-Sur2A/B-channel opener minoxidil showed 23 case reports of breast cancer and one case of ovarian cancer in line with omics data reporting, respectively, and the negative and positive prognostic roles of the ABCC9 gene in these cancers. Sulfonylureas and glinides blocking the pancreatic Kir6.2-Sur1 subunits showed a higher risk for pancreatic cancer in line with the positive prognostic role of the ABCC8 gene but low risks for common cancers. Glibenclamide, repaglinide, and glimepiride show a lower cancer risk within the KATP channel blockers. The Kir6.2-Sur1 opener diazoxide shows no cancer reactions. Conclusion: An elevated expression of the Sur2A subunit was found in proliferating cells in two animal models of cancer. Immunohistochemistry/omics/pharmacovigilance data reveal the role of the Kir6.1/2-Sur2A/B subunits as a drug target in breast/renal cancers and in C.S.
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Affiliation(s)
- Fatima Maqoud
- Functional Gastrointestinal Disorders Research Group, National Institute of Gastroenterology Saverio de Bellis, I.R.C.C.S. Research Hospital, Milan, Italy
- Section of Pharmacology, Department of Pharmacy-Pharmaceutical Sciences, University of Bari "Aldo Moro", Bari, Italy
| | - Nicola Zizzo
- Section of Veterinary Pathology and Comparative Oncology, Department of Veterinary Medicine, University of Bari "Aldo Moro", Valenzano, Italy
| | - Marcella Attimonelli
- Department of Biosciences, Biotechnologies, and Biopharmaceutics, University "Aldo Moro" Bari, Bari, Italy
| | - Antonella Tinelli
- Section of Veterinary Pathology and Comparative Oncology, Department of Veterinary Medicine, University of Bari "Aldo Moro", Valenzano, Italy
| | - Giuseppe Passantino
- Section of Veterinary Pathology and Comparative Oncology, Department of Veterinary Medicine, University of Bari "Aldo Moro", Valenzano, Italy
| | - Marina Antonacci
- Section of Pharmacology, Department of Pharmacy-Pharmaceutical Sciences, University of Bari "Aldo Moro", Bari, Italy
| | - Girolamo Ranieri
- Department of Interventional Radiology and Integrated Medical Oncology, I.R.C.C.S. Istituto Tumori "Giovanni Paolo II", Bari, Italy
| | - Domenico Tricarico
- Section of Pharmacology, Department of Pharmacy-Pharmaceutical Sciences, University of Bari "Aldo Moro", Bari, Italy
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Tsyganov MM, Tsydenova IA, Markovich VA, Ibragimova MK, Rodionov EO, Tuzikov SA, Litvyakov NV. Expression heterogeneity of ABC-transporter family genes and chemosensitivity genes in gastric tumor, carcinomatosis and lymph node metastases. ADVANCES IN MOLECULAR ONCOLOGY 2022. [DOI: 10.17650/2313-805x-2022-9-4-78-88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Introduction. Metastatic tumors (particularly gastric cancer) have been found to be characterized by heterogeneity between the primary tumor and metastases. This type of heterogeneity comes to the fore when treating primary-metastatic forms of tumor and is an important reason for the low effectiveness of their treatment. In this regard, comparative analysis of ABC-transporter gene expression and chemosensitivity genes will allow to characterize to a certain extent the resistance and sensitivity of primary tumor, carcinomatosis and metastases to therapy and provide the basis for personalized treatment approach.Aim. To evaluate expression heterogeneity of ABC-transporter genes and chemosensitivity genes in gastric tumor, carcinomatosis and lymph node metastases.Materials and methods. Overall 41 patients with disseminated gastric cancer stage IV with carcinomatosis of peritoneum were included in the investigation. All patients underwent surgery according to Roux palliative gastrectomy. After surgery patients underwent chemotherapy depending on indications. RNA was isolated using RNeasy Plus mini kit (Qiagen, Germany). The expression level of ABC transporter genes (ABCB1, ABCC1, ABCC2, ABCC5, ABCG1, ABCG2) and chemosensitivity genes (BRCA1, RRM1, ERCC1, TOP1, TOP2α, TUBβ3, TYMS, GSTP1) was assessed by reverse transcription polymerase chain reaction (RT-PCR) in primary tumor, carcinomatosis and lymph node metastases.Results. The expression levels of the genes under study were shown to vary widely. For ABC transporter genes, ABCG1 (3.1 ± 1.1; max 32.0), ABCG2 (7.9 ± 2.3; max 54.1), ABCG2 (9.6 ± 3.8; max 101.0) were the most expressed genes in gastric tumor tissue, carcinomatosis and lymph node metastasis, respectively. Hyperexpression among chemosensitivity genes at all three sites was characteristic only of TOP2α (17.2 ± 6.0; max. 161.9; 10.8 ± 4.1; max. 105.1; 35.3 ± 0.8; max. 439.6, respectively). We found that TOP2α and BRCA1 gene expression levels were higher in lymph node metastasis compared with gastric tumor tissue and carcinomatosis (at p = 0.005 and p = 0.001). Whereas ABCC1 gene expression was statistically significantly higher in carcinomatosis (p = 0.03).Conclusion. Thus, a high level of expression heterogeneity is observed in gastric cancer, which affects the expression patterns of various genes in different localizations. The expression profile can be used to determine the level of heterogeneity and approach to personalized therapy tactics.
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Affiliation(s)
- M. M. Tsyganov
- Cancer Research Institute of the Tomsk National Research Medical Center of the Russian Academy of Sciences; Siberian State Medical University, Ministry of Health of Russia
| | - I. A. Tsydenova
- Cancer Research Institute of the Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - V. A. Markovich
- Cancer Research Institute of the Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - M. K. Ibragimova
- Cancer Research Institute of the Tomsk National Research Medical Center of the Russian Academy of Sciences; Siberian State Medical University, Ministry of Health of Russia; National Research Tomsk State University
| | - E. O. Rodionov
- Cancer Research Institute of the Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - S. A. Tuzikov
- Cancer Research Institute of the Tomsk National Research Medical Center of the Russian Academy of Sciences
| | - N. V. Litvyakov
- Cancer Research Institute of the Tomsk National Research Medical Center of the Russian Academy of Sciences
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Abruzzese V, Sukowati CHC, Tiribelli C, Matera I, Ostuni A, Bisaccia F. The Expression Level of ABCC6 Transporter in Colon Cancer Cells Correlates with the Activation of Different Intracellular Signaling Pathways. PATHOPHYSIOLOGY 2022; 29:173-186. [PMID: 35645325 PMCID: PMC9149812 DOI: 10.3390/pathophysiology29020015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/04/2022] [Accepted: 05/09/2022] [Indexed: 11/16/2022] Open
Abstract
The ATP-binding cassette sub-family C member 6 transporter (ABCC6) is mainly found in the basolateral plasma membrane of hepatic and kidney cells. In hepatocarcinoma HepG2 cells, ABCC6 was involved in cell migration. In the present study, we investigated the role of ABCC6 in colon cancer evaluating the effect of Quercetin and Probenecid, inhibitors of the ectonucleotidase NT5E and ABCC6, respectively, on migration rate of Caco2 and HT29 cell lines. Both drugs reduced cell migration analyzed by scratch test. Gene and protein expression were evaluated by quantitative reverse-transcription PCR (RT-qPCR) and Western blot, respectively. In Caco2 cells, in which ABCC6 is significantly expressed, the addition of ATP restored motility, suggesting the involvement of P2 receptors. Contrary to HT29 cells, where the expression of ABCC6 is negligible but remarkable to the level of NT5E, no effect of ATP addition was detected, suggesting a main role on their migration by the phosphatidylinositol 3′-kinase (PI3K)/Akt system. Therefore, in some colon cancers in which ABCC6 is overexpressed, it may have a primary role in controlling the extracellular purinergic system by feeding it with ATP, thus representing a potential target for a therapy aimed at mitigating invasiveness of those type of cancers.
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Affiliation(s)
- Vittorio Abruzzese
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
| | - Caecilia H. C. Sukowati
- Fondazione Italiana Fegato ONLUS, AREA Science Park Basovizza, 34149 Trieste, Italy; (C.H.C.S.); (C.T.)
| | - Claudio Tiribelli
- Fondazione Italiana Fegato ONLUS, AREA Science Park Basovizza, 34149 Trieste, Italy; (C.H.C.S.); (C.T.)
| | - Ilenia Matera
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
| | - Angela Ostuni
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
- Correspondence: (A.O.); (F.B.)
| | - Faustino Bisaccia
- Department of Sciences, University of Basilicata, 85100 Potenza, Italy; (V.A.); (I.M.)
- Correspondence: (A.O.); (F.B.)
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Genetic Variants Associated with Neuropeptide Y Autoantibody Levels in Newly Diagnosed Individuals with Type 1 Diabetes. Genes (Basel) 2022; 13:genes13050869. [PMID: 35627254 PMCID: PMC9142038 DOI: 10.3390/genes13050869] [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: 03/10/2022] [Revised: 04/30/2022] [Accepted: 05/11/2022] [Indexed: 11/23/2022] Open
Abstract
(1) Autoantibodies to the leucine variant of neuropeptide Y (NPY-LA) have been found in individuals with type 1 diabetes (T1D). We investigated the association between the levels of NPY-LA and single nucleotide polymorphisms (SNP) to better understand the genetic regulatory mechanisms of autoimmunity in T1D and the functional impacts of increased NPY-LA levels. (2) NPY-LA measurements from serum and SNP genotyping were done on 560 newly diagnosed individuals with T1D. SNP imputation with the 1000 Genomes reference panel was followed by an association analysis between the SNPs and measured NPY-LA levels. Additionally, functional enrichment and pathway analyses were done. (3) Three loci (DGKH, DCAF5, and LINC02261) were associated with NPY-LA levels (p-value < 1.5 × 10−6), which indicates an association with neurologic and vascular disorders. SNPs associated with variations in expression levels were found in six genes (including DCAF5). The pathway analysis showed that NPY-LA was associated with changes in gene transcription, protein modification, immunological functions, and the MAPK pathway. (4) Conclusively, we found NPY-LA to be significantly associated with three loci (DGKH, DCAF5, and LINC02261), and based on our findings we hypothesize that the presence of NPY-LA is associated with the regulation of the immune system and possibly neurologic and vascular disorders.
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Meng X, Dong S, Yangyang L, Wang S, Xu X, Liu T, Zhuang X. Adenosine triphosphate-binding cassette subfamily C members in liver hepatocellular carcinoma: Bioinformatics-driven prognostic value. Medicine (Baltimore) 2022; 101:e28869. [PMID: 35363194 PMCID: PMC9282002 DOI: 10.1097/md.0000000000028869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 12/16/2021] [Indexed: 01/04/2023] Open
Abstract
Aberrant expression of adenosine triphosphate-binding cassette subfamily C (ABCC), one of the largest superfamilies and transporter gene families of membrane proteins, is associated with various tumors. However, its relationship with liver hepatocellular carcinoma (LIHC) remains unclear.We used the Oncomine, UALCAN, Human Protein Atlas, GeneMANIA, GO, Kyoto Encyclopedia of Genes and Genomes (KEGG), TIMER, and Kaplan-Meier Plotter databases. On May 20, 2021, we searched these databases for the terms ABCC1, ABCC2, ABCC3, ABCC4, ABCC5, ABCC6, ABCC7, ABCC8, ABCC9, ABCC10, ABCC11, ABCC12, ABCC13, and "liver cancer." The exposure group comprised LIHC patients, and the control group comprised normal patients (those with noncancerous liver tissue). All patients shown in the retrieval language search were included. We compared the mRNA expression of these proteins in LIHC and control patients to examine the potential role of ABCC1-13 in LIHC.Relative to the normal liver tissue, mRNA expression of ABCC1/2/3/4/5/6/10 was significantly upregulated (P < .001), and that of ABCC9/11 significantly downregulated (both P < .001), in LIHC. ABCC mRNA expression varied with gender (P < .05), except for ABCC11-13; with tumor grade (P < 0.05), except for ABCC7/12/13; with tumor stage (P < .05), except for ABCC11-13; and with lymph node metastasis status (P < .05), except for ABCC7/8/11/12/13. Based on KEGG enrichment analysis, these genes were associated with the following pathways: ABC transporters, Bile secretion, Antifolate resistance, and Peroxisome (P < .05). Except for ABCC12/13, the ABCCs were significantly associated with B cell, CD8+ T cell, CD4+ T cell, macrophage, neutrophil, and dendritic cell infiltration (P < .05). High mRNA expression of ABCC1/4/5/8 (P < .05) and low expression of ABCC6/7/9/12/13 (P < .05) indicated poor prognosis. Prognostic significance was indicated for ABCC2/13 for both men and women (P < .05); for ABCC1/6/12/13 for tumor grades 1-3 (P < .05); for ABCC5/11/12/13 for all tumor stages (P < .05); for ABCC1/11/12/13 for American Joint Committee on Cancer T stages 1-3 (P < .05); and for ABCC1/5/6/13 for vascular invasion. None showed prognostic significance for microvascular invasion (P < .05).We identified ABCC1/2/3/4/5/6/9/10/11 as potential diagnostic markers, and ABCC1/4/5/6/7/8/9/12/13 as prognostic markers, of LIHC. Our future work will promote the use of ABCCs in the diagnosis and treatment of LIHC.
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Affiliation(s)
- Xiangtong Meng
- Changchun University of Chinese Medicine, 1035 Bo Shuo Road, Changchun City, Jilin Province, China
| | - Shen Dong
- Changchun University of Chinese Medicine, 1035 Bo Shuo Road, Changchun City, Jilin Province, China
| | - Liu Yangyang
- Changchun University of Chinese Medicine, 1035 Bo Shuo Road, Changchun City, Jilin Province, China
- Endocrinology, First Affiliated Hospital to Changchun University of Chinese Medicine, 1478 Gongnong Road, Changchun City, Jilin Province, China
| | - Song Wang
- Changchun University of Chinese Medicine, 1035 Bo Shuo Road, Changchun City, Jilin Province, China
| | - Xiaohao Xu
- Changchun University of Chinese Medicine, 1035 Bo Shuo Road, Changchun City, Jilin Province, China
- Research Center of Traditional Chinese Medicine, First Affiliated Hospital to Changchun University of Chinese Medicine, Changchun City, Jilin Province, China
| | - Tiejun Liu
- Changchun University of Chinese Medicine, 1035 Bo Shuo Road, Changchun City, Jilin Province, China
- Department of Hepatology, First Affiliated Hospital to Changchun University of Chinese Medicine, 1478 Gongnong Road, Changchun City, Jilin Province, China
| | - Xiong Zhuang
- Changchun University of Chinese Medicine, 1035 Bo Shuo Road, Changchun City, Jilin Province, China
- Department of Hepatology, First Affiliated Hospital to Changchun University of Chinese Medicine, 1478 Gongnong Road, Changchun City, Jilin Province, China
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9
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Hao P, Song KY, Wang SQ, Huang XJ, Yao DW, Yang DJ. ABCC9 Is Downregulated and Prone to Microsatellite Instability on ABCC9tetra in Canine Breast Cancer. Front Vet Sci 2022; 8:819293. [PMID: 35071399 PMCID: PMC8777218 DOI: 10.3389/fvets.2021.819293] [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: 11/21/2021] [Accepted: 12/06/2021] [Indexed: 11/13/2022] Open
Abstract
Tumorigenesis is associated with metabolic abnormalities and genomic instability. Microsatellite mutations, including microsatellite instability (MSI) and loss of heterozygosity (LOH), are associated with the functional impairment of some tumor-related genes. To investigate the role of MSI and LOH in sporadic breast tumors in canines, 22 tumors DNA samples and their adjacent normal tissues were evaluated using polyacrylamide gel electrophoresis and silver staining for 58 microsatellites. Quantitative real-time polymerase chain reaction, promoter methylation analysis and immunohistochemical staining were used to quantify gene expression. The results revealed that a total of 14 tumors (6 benign tumors and 8 breast cancers) exhibited instability as MSI-Low tumors. Most of the microsatellite loci possessed a single occurrence of mutations. The maximum number of MSI mutations on loci was observed in tumors with a lower degree of differentiation. Among the unstable markers, FH2060 (4/22), ABCC9tetra (4/22) and SCN11A (6/22) were high-frequency mutation sites, whereas FH2060 was a high-frequency LOH site (4/22). The ABCC9tetra locus was mutated only in cancerous tissue, although it was excluded by transcription. The corresponding genes and proteins were significantly downregulated in malignant tissues, particularly in tumors with MSI. Furthermore, the promoter methylation results of the adenosine triphosphate binding cassette subfamily C member 9 (ABCC9) showed that there was a high level of methylation in breast tissues, but only one case showed a significant elevation compared with the control. In conclusion, MSI-Low or MSI-Stable is characteristic of most sporadic mammary tumors. Genes associated with tumorigenesis are more likely to develop MSI. ABCC9 protein and transcription abnormalities may be associated with ABCC9tetra instability.
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Affiliation(s)
- Pan Hao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Kai-Yue Song
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Si-Qi Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xiao-Jun Huang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Da-Wei Yao
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - De-Ji Yang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
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10
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DNA Repair and Replication-Related Gene Signature Based on Tumor Mutation Burden Reveals Prognostic and Immunotherapy Response in Gastric Cancer. JOURNAL OF ONCOLOGY 2022; 2022:6469523. [PMID: 35058980 PMCID: PMC8766186 DOI: 10.1155/2022/6469523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/01/2021] [Indexed: 12/16/2022]
Abstract
The genomic variant features (mutations, deletions, structural variants, etc.) within gastric cancer impact its evolution and immunogenicity. The tumor has developed several coping strategies to respond to these changes by DNA repair and replication (DRR). However, the intrinsic relationship between the associated DRR-related genes and gastric cancer progression remained unknown. This study selected DRR-related genes with tumor mutation burden based on the TCGA (The Cancer Genome Atlas) database of gastric cancer transcriptome and mutation data. The prognosis model of seven genes (LAMA2, CREB3L3, SELP, ABCC9, CYP1B1, CDH2, and GAMT) was constructed by a univariate and LASSO regression analysis and divided into high-risk and low-risk groups with the median risk score. Survival analysis showed that overall survival (OS) was lower in the high-risk group than that in the low-risk group. Moreover, patients with gastric cancer in the high-risk group have worse survival in different subgroups, including age, gender, histological grade, and TNM stage. The nomogram that included risk scores for DRR-related genes could accurately foresee OS of patients with gastric cancer. Interestingly, the tumor mutation burden score was higher in the low-risk group than that in the high-risk group, and the risk score for DRR-related genes was negatively correlated with tumor mutation burden in gastric cancer. Next, we further combined the risk score and tumor mutation burden to evaluate the prognosis of gastric cancer patients. The low-risk cohort had a better prognosis than the high-risk cohort in the high tumor mutation burden subgroup. The number of mutation types in the high-risk group was lower than that in the low-risk group. In the immune microenvironment of gastric cancer, more naïve B cells, memory resting CD4+ T cells, Treg cells, monocytes cells, and resting mast cells were infiltrated in the high-risk group. At last, PD-L1 and IAP expressions were negatively correlated with the risk scores; patients with gastric cancer in the low-risk group showed better immunotherapy outcomes than those in the high-risk group. Overall, the DRR-related gene signature based on tumor mutation burden is a novel biomarker for prognostic and immunotherapy response in patients with gastric cancer.
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Huang W, Zhang J, Dong B, Chen H, Shao L, Li X. A Novel miR-98 Negatively Regulates the Resistance of Endometrial Cancer Cells to Paclitaxel by Suppressing ABCC10/MRP-7. Front Oncol 2021; 11:809410. [PMID: 34950596 PMCID: PMC8688247 DOI: 10.3389/fonc.2021.809410] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 11/15/2021] [Indexed: 02/01/2023] Open
Abstract
Endometrial cancer (EC) is one of the most frequent gynecological tumors, and chemoresistance is a major obstacle to improving the prognosis of EC patients. MicroRNAs (miRNAs) and long non-coding RNAs (lncRNAs) have recently emerged as crucial chemoresistance regulators that alter the levels of downstream target genes. Multidrug Resistance Protein 7 (MRP-7/ABCC10) is an ATP-binding cassette transporter that causes the resistance to anti-cancer drugs. The purpose of this research is to determine whether MRP-7 has a role in mediating the sensitivity of EC cells to paclitaxel and whether the expression of MRP-7 is regulated by miR-98 and lncRNA NEAT1. We reported that the levels of MRP-7 were significantly increased in EC tissues and associated with an unfavorable prognosis. Downregulation of MRP-7 in EC cells sensitized these cells to paclitaxel and reduced cell invasion. PLAUR serves as a downstream molecule of MRP-7 and facilitates paclitaxel resistance and EC cell invasiveness. Moreover, miR-98 serves as a tumor suppressor to inhibit MRP-7 expression, leading to the repression of paclitaxel resistance. Furthermore, a novel lncRNA, NEAT1, was identified as a suppressor of miR-98, and NEAT1 could upregulate MRP-7 levels by reducing the expression of miR-98. Taken together, these findings demonstrate that upregulation of MRP-7 and NEAT1, and downregulation of miR-98 have important roles in conferring paclitaxel resistance to EC cells. The modulation of these molecules may help overcome the chemoresistance against paclitaxel in EC cells.
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Affiliation(s)
- Wei Huang
- Department of Gynecologic and Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jun Zhang
- Department of Clinical Laboratory, The Fifth Hospital of Wuhan, Wuhan, China
| | - Biao Dong
- Department of Neurosurgery, The Fifth Hospital of Wuhan, Wuhan, China
| | - Haiting Chen
- Department of Gastrointestinal Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Liwei Shao
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, China
| | - Xiaohui Li
- Department of Pediatrics, The Fifth Hospital of Wuhan, Wuhan, China
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12
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Cheng Q, Duan W, He S, Li C, Cao H, Liu K, Ye W, Yuan B, Xia Z. Multi-Omics Data Integration Analysis of an Immune-Related Gene Signature in LGG Patients With Epilepsy. Front Cell Dev Biol 2021; 9:686909. [PMID: 34336837 PMCID: PMC8322853 DOI: 10.3389/fcell.2021.686909] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 06/22/2021] [Indexed: 12/12/2022] Open
Abstract
Background The tumor immune microenvironment significantly affects tumor occurrence, progression, and prognosis, but its impact on the prognosis of low-grade glioma (LGG) patients with epilepsy has not been reported. Hence, the purpose of this study is to explore its effect on LGG patients with epilepsy. Methods The data of LGG patients derived from the TCGA database. The level of immune cell infiltration and the proportion of 22 immune cells were evaluated by ESTIMATE and CIBERSORT algorithms, respectively. The Cox and LASSO regression analysis was adopted to determine the DEGs, and further established the clustering and risk score models. The association between genomic alterations and risk score was investigated using CNV and somatic mutation data. GSVA was adopted to identify the immunological pathways, immune infiltration and inflammatory profiles related to the signature genes. The Tumor Immune Dysfunction and Exclusion (TIDE) algorithm and GDSC database were used to predict the patient’s response to immunotherapy and chemotherapy, respectively. Results The prognosis of LGG patients with epilepsy was associated with the immune score. Three prognostic DEGs (ABCC3, PDPN, and INA) were screened out. The expression of signature genes was regulated by DNA methylation. The clustering and risk score models could stratify glioma patients into distinct prognosis groups. The risk score was an independent predictor in prognosis, with a high risk-score indicating a poor prognosis, more malignant clinicopathological and genomic aberration features. The nomogram had the better predictive ability. Patients at high risk had a higher level of macrophage infiltration and increased inflammatory activities associated with T cells and macrophages. While the higher percentage of NK CD56bright cell and more active inflammatory activity associated with B cell were present in the low-risk patients. The signature genes participated in the regulation of immune-related pathways, such as IL6-JAK-STAT3 signaling, IFN-α response, IFN-γ response, and TNFA-signaling-via-NFKB pathways. The high-risk patients were more likely to benefit from anti-PD1 and temozolomide (TMZ) treatment. Conclusion An immune-related gene signature was established based on ABCC3, PDPN, and INA, which can be used to predict the prognosis, immune infiltration status, immunotherapy and chemotherapy response of LGG patients with epilepsy.
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Affiliation(s)
- Quan Cheng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Weiwei Duan
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Shiqing He
- Department of Neurosurgery, Affiliated Nanhua Hospital, Hengyang Medical College, University of South China, Hengyang, China
| | - Chen Li
- Department of Rehabilitation Medicine, Hunan Provincial People's Hospital, Hunan Normal University, Changsha, China
| | - Hui Cao
- Department of Psychiatry, The Second People's Hospital of Hunan Province, The Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Kun Liu
- Department of Cerebrovascular Surgery, The Second People's Hospital of Hunan Province, The Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Weijie Ye
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, China
| | - Bo Yuan
- Department of Cerebrovascular Surgery, The Second People's Hospital of Hunan Province, The Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Zhiwei Xia
- Department of Neurology, Hunan Aerospace Hospital, Changsha Medical University, Changsha, China
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Zhang Q, Liu W, Luo SB, Xie FC, Liu XJ, Xu RA, Chen L, Su Z. Development of a Prognostic Five-Gene Signature for Diffuse Lower-Grade Glioma Patients. Front Neurol 2021; 12:633390. [PMID: 34295296 PMCID: PMC8291287 DOI: 10.3389/fneur.2021.633390] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 06/02/2021] [Indexed: 01/07/2023] Open
Abstract
Background: Diffuse lower-grade gliomas (LGGs) are infiltrative and heterogeneous neoplasms. Gene signature including multiple protein-coding genes (PCGs) is widely used as a tumor marker. This study aimed to construct a multi-PCG signature to predict survival for LGG patients. Methods: LGG data including PCG expression profiles and clinical information were downloaded from The Cancer Genome Atlas (TCGA) and the Chinese Glioma Genome Atlas (CGGA). Survival analysis, receiver operating characteristic (ROC) analysis, and random survival forest algorithm (RSFVH) were used to identify the prognostic PCG signature. Results: From the training (n = 524) and test (n = 431) datasets, a five-PCG signature which can classify LGG patients into low- or high-risk group with a significantly different overall survival (log rank P < 0.001) was screened out and validated. In terms of prognosis predictive performance, the five-PCG signature is stronger than other clinical variables and IDH mutation status. Moreover, the five-PCG signature could further divide radiotherapy patients into two different risk groups. GO and KEGG analysis found that PCGs in the prognostic five-PCG signature were mainly enriched in cell cycle, apoptosis, DNA replication pathways. Conclusions: The new five-PCG signature is a reliable prognostic marker for LGG patients and has a good prospect in clinical application.
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Affiliation(s)
- Qiang Zhang
- Department of Clinical Laboratory, The People's Hospital of Lishui, Lishui, China
| | - Wenhao Liu
- Guangdong-Hong Kong-Macao Greater Bay Area (GBA) Research Innovation Institute for Nanotechnology, Guangzhou, China
| | - Shun-Bin Luo
- Department of Clinical Pharmacy, The People's Hospital of Lishui, Lishui, China
| | - Fu-Chen Xie
- Department of Urinary Surgery, The People's Hospital of Lishui, Lishui, China
| | - Xiao-Jun Liu
- Pathology Department, The People's Hospital of Lishui, Lishui, China
| | - Ren-Ai Xu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lixi Chen
- Department of Gynecology in Xiahe Branch, Xiamen University Affiliated Zhongshan Hospital, Xiamen, China
| | - Zhilin Su
- Department of Laboratory Medicine, The First Affiliated Hospital of Xiamen University, Xiamen, China
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Rabben HL, Andersen GT, Ianevski A, Olsen MK, Kainov D, Grønbech JE, Wang TC, Chen D, Zhao CM. Computational Drug Repositioning and Experimental Validation of Ivermectin in Treatment of Gastric Cancer. Front Pharmacol 2021; 12:625991. [PMID: 33867984 PMCID: PMC8044519 DOI: 10.3389/fphar.2021.625991] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 02/10/2021] [Indexed: 12/11/2022] Open
Abstract
Objective: The aim of the present study was repositioning of ivermectin in treatment of gastric cancer (GC) by computational prediction based on gene expression profiles of human and mouse model of GC and validations with in silico, in vitro and in vivo approaches. Methods: Computational drug repositioning was performed using connectivity map (cMap) and data/pathway mining with the Ingenuity Knowledge Base. Tissue samples of GC were collected from 16 patients and 57 mice for gene expression profiling. Additional seven independent datasets of gene expression of human GC from the TCGA database were used for validation. In silico testing was performed by constructing interaction networks of ivermectin and the downstream effects in targeted signaling pathways. In vitro testing was carried out in human GC cell lines (MKN74 and KATO-III). In vivo testing was performed in a transgenic mouse model of GC (INS-GAS mice). Results: GC gene expression “signature” and data/pathway mining but not cMAP revealed nine molecular targets of ivermectin in both human and mouse GC associated with WNT/β-catenin signaling as well as cell proliferation pathways. In silico inhibition of the targets of ivermectin and concomitant activation of ivermectin led to the inhibition of WNT/β-catenin signaling pathway in “dose-depended” manner. In vitro, ivermectin inhibited cell proliferation in time- and concentration-depended manners, and cells were arrested in the G1 phase at IC50 and shifted to S phase arrest at >IC50. In vivo, ivermectin reduced the tumor size which was associated with inactivation of WNT/β-catenin signaling and cell proliferation pathways and activation of cell death signaling pathways. Conclusion: Ivermectin could be recognized as a repositioning candidate in treatment of gastric cancer.
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Affiliation(s)
- Hanne-Line Rabben
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,The Central Norway Regional Health Authority (RHA), Stjørdal, Norway
| | - Gøran Troseth Andersen
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Aleksandr Ianevski
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Magnus Kringstad Olsen
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Denis Kainov
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Jon Erik Grønbech
- Surgical Clinic, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Timothy Cragin Wang
- Division of Digestive and Liver Diseases, Columbia University College of Physicians and Surgeons, New York, NY, United States
| | - Duan Chen
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Chun-Mei Zhao
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.,The Central Norway Regional Health Authority (RHA), Stjørdal, Norway
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15
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Wu H, Zhao XK, Zhu JJ. Clinical characteristics and ABCC2 genotype in Dubin-Johnson syndrome: A case report and review of the literature. World J Clin Cases 2021; 9:878-885. [PMID: 33585635 PMCID: PMC7852649 DOI: 10.12998/wjcc.v9.i4.878] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/20/2020] [Accepted: 12/06/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Dubin-Johnson syndrome (DJS) is a benign autosomal recessive liver disease involving mutations of the ABCC2 gene. It is characterized by chronic or intermittent conjugated hyperbilirubinemia, with chronic idiopathic jaundice as the main clinical manifestation. Genetic alterations of the ABCC2 gene are commonly used for diagnosing DJS; however, the causative ABCC2 point mutation in Chinese patients remains unknown. Research on ABCC2 mutations in Chinese DJS patients is extremely rare, and the diagnosis of DJS remains limited. The routine analysis of ABCC2 mutations is helpful for the diagnosis of DJS. Here, we report the clinical characteristics and ABCC2 genotype of an adult female DJS patient. This article is to expound the discovery of more potentially pathogenic ABCC2 variants will that contribute to DJS identification.
CASE SUMMARY This study investigated a woman referred for DJS and involved clinical and genetic analyses. ABCC2 mutations were identified by next-generation sequencing (NGS). The patient showed intermittent jaundice and conjugated hyper-bilirubinemia. Histopathological examinations were consistent with the typical phenotype of DJS. Genetic diagnostic analysis revealed an ABCC2 genotype exhibiting a pathogenic variant, namely c.2443C>T (p.Arg815*), which has not been reported previously in the domestic or foreign literature.
CONCLUSION Pathogenic ABCC2 mutations play an important role in the diagnosis of DJS, especially in patients with atypical presentations. Currently, NGS is used in the routine analysis of DJS cases and such tests of further cases will better illuminate the relationship between various genotypes and phenotypes of DJS.
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Affiliation(s)
- Huan Wu
- Department of Infectious Diseases, The Affiliated Hospital of Guizhou Medical University, Guiyang 550001, Guizhou Province, China
| | - Xue-Ke Zhao
- Department of Infectious Diseases, The Affiliated Hospital of Guizhou Medical University, Guiyang 550001, Guizhou Province, China
| | - Juan-Juan Zhu
- Department of Infectious Diseases, The Affiliated Hospital of Guizhou Medical University, Guiyang 550001, Guizhou Province, China
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Ostuni A, Carmosino M, Miglionico R, Abruzzese V, Martinelli F, Russo D, Laurenzana I, Petillo A, Bisaccia F. Inhibition of ABCC6 Transporter Modifies Cytoskeleton and Reduces Motility of HepG2 Cells via Purinergic Pathway. Cells 2020; 9:cells9061410. [PMID: 32517079 PMCID: PMC7349786 DOI: 10.3390/cells9061410] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/29/2020] [Accepted: 06/01/2020] [Indexed: 12/22/2022] Open
Abstract
ABCC6, belonging to sub-family C of ATP-binding cassette transporter, is an ATP-dependent transporter mainly present in the basolateral plasma membrane of hepatic and kidney cells. Although the substrates transported are still uncertain, ABCC6 has been shown to promote ATP release. The extracellular ATP and its derivatives di- and mono-nucleotides and adenosine by acting on specific receptors activate the so-called purinergic pathway, which in turn controls relevant cellular functions such as cell immunity, inflammation, and cancer. Here, we analyzed the effect of Abcc6 knockdown and probenecid-induced ABCC6 inhibition on cell cycle, cytoskeleton, and motility of HepG2 cells. Gene and protein expression were evaluated by quantitative Reverse Transcription PCR (RT-qPCR) and western blot, respectively. Cellular cycle analysis was evaluated by flow cytometry. Actin cytoskeleton dynamics was evaluated by laser confocal microscopy using fluorophore-conjugated phalloidin. Cell motility was analyzed by in vitro wound-healing migration assay. Cell migration is reduced both in Abcc6 knockdown HepG2 cells and in probenecid treated HepG2 cells by interfering with the extracellular reserve of ATP. Therefore, ABCC6 could contribute to cytoskeleton rearrangements and cell motility through purinergic signaling. Altogether, our findings shed light on a new role of the ABCC6 transporter in HepG2 cells and suggest that its inhibitor/s could be considered potential anti-metastatic drugs.
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Affiliation(s)
- Angela Ostuni
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
- Correspondence: (A.O.); (F.B.); Tel.: +39-0971-205453 (A.O.); Tel.: +39-0971-205462 (F.B.)
| | - Monica Carmosino
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
| | - Rocchina Miglionico
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
| | - Vittorio Abruzzese
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
| | - Fabio Martinelli
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
| | - Daniela Russo
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
| | - Ilaria Laurenzana
- Laboratory of Preclinical and Translational Research, IRCCS-Referral Cancer Center of Basilicata (CROB), 85028 Rionero in Vulture, Italy;
| | - Agata Petillo
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
| | - Faustino Bisaccia
- Department of Sciences, University of Basilicata, viale Ateneo Lucano 10, 85100 Potenza, Italy; (M.C.); (R.M.); (V.A.); (F.M.); (D.R.); (A.P.)
- Correspondence: (A.O.); (F.B.); Tel.: +39-0971-205453 (A.O.); Tel.: +39-0971-205462 (F.B.)
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