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Marzaban R, Mohamed Samy R, Ahmed Kassem M, Atef M. Multidrug resistance Gene-1 polymorphisms (C3435T and G2677T) and the risk of inflammatory bowel disease in Egyptian patients. Arab J Gastroenterol 2024:S1687-1979(23)00118-1. [PMID: 38413324 DOI: 10.1016/j.ajg.2023.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 10/23/2023] [Accepted: 12/30/2023] [Indexed: 02/29/2024]
Abstract
BACKGROUND AND STUDY AIMS The multidrug resistance 1 (MDR1) gene is a gene involved in the pathogenesis of inflammatory bowel disease (IBD).The aim of the study is to investigate the association of MDR-1 gene polymorphisms (C2345T and G2677T) and IBD incidence in Egyptian patients, and its relation with disease severity. PATIENTS AND METHODS This is a case-control study where genotyping of MDR-1 gene C3435T and G2677T single nucleotide polymorphisms (SNPs) were assayed. RESULTS Forty naïve IBD patients, who were composed of 25 UC and 15CD, were compared to 60 healthy controls. They were young aged with significant female predominance, particularly in CD (P = 0.004). UC was mainly (48 %) presented in moderate severity while CD was mainly (53.3 %) presented with mild severity. MDR-1 gene C3435T SNP was not statistically related to IBD, whether in terms of genotypes or alleles, yet its T allele was significantly related to moderate cases of UC (P = 0.014). However, GG genotype of G2677T SNP was significantly low in IBD (P = 0.013), while TT genotype and T allele were significantly related to CD (P = 0.011, and 0.012 respectively). Moreover, G allele proved to be associated significantly with moderate cases of UC (P = 0.001) and mild cases of CD (P = 0.002). CONCLUSIONS MDR-I gene G2677T SNP GG genotype proved to be protective against IBD, thus may be considered in diagnostic workup of IBD including its severity.
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Affiliation(s)
- Raghda Marzaban
- Endemic Medicine Department-Faculty of Medicine-Cairo University, Egypt
| | - Rania Mohamed Samy
- Clinical pathology department-Faculty of Medicine-Cairo University, Egypt
| | - Mona Ahmed Kassem
- Department of Hepatology-Students᾿ hospital-Ministry of Health, Giza, Egypt
| | - Mira Atef
- Endemic Medicine Department-Faculty of Medicine-Cairo University, Egypt.
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Zhu H, Chen J, Wen Z, Li J, Yu Q, Liao W, Luo X. The role of circadian clock genes in colorectal carcinoma: Novel insights into regulatory mechanism and implications in clinical therapy. Life Sci 2023; 333:122145. [PMID: 37797685 DOI: 10.1016/j.lfs.2023.122145] [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: 08/03/2023] [Revised: 09/23/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
Colorectal cancer (CRC) is a lethal malignancy with limited treatment strategies. Accumulating evidence indicates that CRC tumorigenesis, progression and metastasis are intimately associated with circadian clock, an inherent 24-h cycle oscillation of biochemical, physiological functions in almost every eukaryote. In the present review, we summarize the altered expression level of circadian genes in CRC and the prognosis associated with gene abundance switch. We illustrate the function and potential mechanisms of circadian genes in CRC pathogenesis and progression. Moreover, circadian based-therapeutic strategies including chronotherapy, therapeutics targeting potential circadian components, and melatonin treatment in CRC are also highlighted.
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Affiliation(s)
- Haodong Zhu
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, PR China; Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan 410078, PR China
| | - Jiawei Chen
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, PR China; Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan 410078, PR China
| | - Zeqin Wen
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, Hunan 410078, PR China
| | - Jinfei Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, PR China; Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan 410078, PR China
| | - Qinyang Yu
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, PR China; Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan 410078, PR China
| | - Weihua Liao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, PR China
| | - Xiangjian Luo
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, PR China; Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, Hunan 410078, PR China; Key Laboratory of Biological Nanotechnology of National Health Commission, Central South University, Changsha, Hunan 410078, PR China; Hunan Key Laboratory of Oncotarget Gene, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, PR China; Molecular Imaging Research Center of Central South University, Changsha, Hunan 410078, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410078, PR China.
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Abstract
ABC transporters are essential for cellular physiology. Humans have 48 ABC genes organized into seven distinct families. Of these genes, 44 (in five distinct families) encode for membrane transporters, of which several are involved in drug resistance and disease pathways resulting from transporter dysfunction. Over the last decade, advances in structural biology have vastly expanded our mechanistic understanding of human ABC transporter function, revealing details of their molecular arrangement, regulation, and interactions, facilitated in large part by advances in cryo-EM that have rendered hitherto inaccessible targets amenable to high-resolution structural analysis. As a result, experimentally determined structures of multiple members of each of the five families of ABC transporters in humans are now available. Here we review this recent progress, highlighting the physiological relevance of human ABC transporters and mechanistic insights gleaned from their direct structure determination. We also discuss the impact and limitations of model systems and structure prediction methods in understanding human ABC transporters and discuss current challenges and future research directions.
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Affiliation(s)
- Amer Alam
- The Hormel Institute, University of Minnesota, Austin, Minnesota, USA
| | - Kaspar P Locher
- Institute of Molecular Biology and Biophysics, ETH Zurich, Switzerland;
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4
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Li T, Gao X, Yan Z, Wai TS, Yang W, Chen J, Yan R. Understanding the tonifying and the detoxifying properties of Chinese medicines from their impacts on gut microbiota and host metabolism: a case study with four medicinal herbs in experimental colitis rat model. Chin Med 2022; 17:118. [PMID: 36195889 PMCID: PMC9533630 DOI: 10.1186/s13020-022-00673-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/17/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chinese medicines (CMs) have emerged as an alternative therapy for ulcerative colitis through reinforcing the vital qi and/or eliminating the pathogenic factors according to the traditional Chinese medicinal theory. Presystemic interactions of CMs with gut microbiota and the associated metabolic network shift are believed to be essential to achieve their holistic health benefits in traditional oral application. METHODS This study first employed 16S rDNA-based microbial profiling and mass spectrometry-based urinary metabolomics to simultaneously evaluate four single CMs frequently prescribed as main constituent herbs for alleviating UC, the tonic ginseng and Astragali Radix (AR) and the detoxifying Scutellaria Radix (SR) and Rhubarb, on a dextran sodium sulfate (DSS)-induced colitis rat model, with aims to understanding the tonifying or detoxifying properties of CMs through clinical phenotypes, the common features and herb-specific signatures in gut microbial alterations and the associated host metabolic shifts. Colitis was induced in rats receiving 5% DSS for consecutive 7 days. Control group received water alone. Herbal groups received 5% DSS and respective herbal preparation by gavage once daily. Body weight, stool consistency, and rectal bleeding were recorded daily. Feces and urine were freshly collected at multiple time points. On day 7, blood and colon tissues were collected to determine anti-/pro-inflammatory cytokines levels, colonic myeloperoxidase activity, and histopathologic alterations. RESULTS Gut microbiome was more prone to herb intervention than metabolome and displayed increasing associations with metabolic dynamics. Although both the tonic and the detoxifying herbs alleviated colitis and caused some similar changes in DSS-induced microbiome and metabolome disturbance, the tonic herbs were more effective and shared more common microbial and metabolic signatures. The detoxifying herbs elicited herb-specific changes. Rhubarb uniquely affected phenylalanine metabolism and established high correlations between Akkermansia muciniphila and Parasutterella and hydroxyphenylacetylglycine and phenylbutyrylglycine, while SR caused significant elevation of steroidal glucuronides dehydropregnenolone glucuronide and estriol glucuronide, both displaying exclusive correlations with genus Acetatifactor. CONCLUSION Both tonic and detoxifying herbs tested ameliorated experimental colitis and elicited alternative microbial and host metabolic reprogramming. The findings highlight the importance of presystemic interactions with gut microbiota to host metabolic shifts and promote modern translation of tonic and detoxifying properties of CMs.
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Affiliation(s)
- Ting Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao China
- Zhuhai UM Science & Technology Research Institute, Zhuhai, 519080 China
| | - Xuejiao Gao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao China
- Zhuhai UM Science & Technology Research Institute, Zhuhai, 519080 China
| | - Zhixiang Yan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao China
- Zhuhai UM Science & Technology Research Institute, Zhuhai, 519080 China
| | - Tai-Seng Wai
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao China
- Zhuhai UM Science & Technology Research Institute, Zhuhai, 519080 China
| | - Wei Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao China
- Zhuhai UM Science & Technology Research Institute, Zhuhai, 519080 China
| | - Junru Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao China
- Zhuhai UM Science & Technology Research Institute, Zhuhai, 519080 China
| | - Ru Yan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao China
- Zhuhai UM Science & Technology Research Institute, Zhuhai, 519080 China
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5
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Garabatos N, Santamaria P. Gut Microbial Antigenic Mimicry in Autoimmunity. Front Immunol 2022; 13:873607. [PMID: 35572569 PMCID: PMC9094498 DOI: 10.3389/fimmu.2022.873607] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 03/14/2022] [Indexed: 12/12/2022] Open
Abstract
The gut microbiota plays a major role in the developmental biology and homeostasis of cells belonging to the adaptive and innate arms of the immune system. Alterations in its composition, which are known to be regulated by both genetic and environmental factors, can either promote or suppress the pathogenic processes underlying the development of various autoimmune diseases, including inflammatory bowel disease, multiple sclerosis, systemic lupus erythematosus, type 1 diabetes and rheumatoid arthritis, to just name a few. Cross-recognition of gut microbial antigens by autoreactive T cells as well as gut microbe-driven alterations in the activation and homeostasis of effector and regulatory T cells have been implicated in this process. Here, we summarize our current understanding of the positive and negative associations between alterations in the composition of the gut microbiota and the development of various autoimmune disorders, with a special emphasis on antigenic mimicry.
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Affiliation(s)
- Nahir Garabatos
- Institut D'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
| | - Pere Santamaria
- Institut D'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- Julia McFarlane Diabetes Research Centre (JMDRC), Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
- Department of Microbiology, Immunology and Infectious Diseases, Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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6
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Naphthoquinone derivatives as P-glycoprotein inducers in inflammatory bowel disease: 2D monolayers, 3D spheroids, and in vivo models. Pharmacol Res 2022; 179:106233. [DOI: 10.1016/j.phrs.2022.106233] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 04/07/2022] [Accepted: 04/19/2022] [Indexed: 12/21/2022]
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7
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Foley SE, Loew EB, McCormick BA. Recent advances in understanding microbial regulation of host multi-drug resistance transporters. CURRENT OPINION IN PHYSIOLOGY 2021. [DOI: 10.1016/j.cophys.2021.100469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Petryszyn P, Dudkowiak R, Gruca A, Jaźwińska-Tarnawska E, Ekk-Cierniakowski P, Poniewierka E, Wiela-Hojeńska A, Głowacka K. C3435T Polymorphism of the ABCB1 Gene in Polish Patients with Inflammatory Bowel Disease: A Case-Control and Meta-Analysis Study. Genes (Basel) 2021; 12:genes12091419. [PMID: 34573401 PMCID: PMC8465101 DOI: 10.3390/genes12091419] [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] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/05/2021] [Accepted: 09/11/2021] [Indexed: 12/30/2022] Open
Abstract
P-glycoprotein encoded by the ABCB1 gene constitutes a molecular barrier in the small and large bowel epithelium, and its different expression may influence susceptibility to inflammatory bowel disease (IBD). We aimed to assess the contribution of the C3435T polymorphism to disease risk in the Polish population. A total of 100 patients (50 Crohn's disease (CD), 50 ulcerative colitis (UC)) and 100 healthy controls were genotyped for the single nucleotide polymorphism (SNP) C3435T by using the PCR-RFLP method. Patients were classified on the basis of disease phenotype and the specific treatment used. A meta-analysis was carried out of our results and those from previously published Polish studies. There was no significant difference in allele and genotype frequencies in IBD patients compared with controls. For CD patients, a lower frequency of TT genotype in those with colonic disease, a lower frequency of T allele, and a higher frequency of C allele in those with luminal disease were observed, whereas for UC patients, a lower frequency of CT genotype was observed in those with left-sided colitis. A meta-analysis showed a tendency towards higher prevalence of CC genotype in UC cases. These results indicate that the C3435T variants may confer a risk for UC and influence disease behaviour.
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Affiliation(s)
- Paweł Petryszyn
- Department of Clinical Pharmacology, Wroclaw Medical University, 50-571 Wroclaw, Poland; (A.G.); (E.J.-T.); (A.W.-H.); (K.G.)
- Correspondence: ; Tel.: +48-717840601
| | - Robert Dudkowiak
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, 50-571 Wroclaw, Poland; (R.D.); (E.P.)
| | - Agnieszka Gruca
- Department of Clinical Pharmacology, Wroclaw Medical University, 50-571 Wroclaw, Poland; (A.G.); (E.J.-T.); (A.W.-H.); (K.G.)
| | - Ewa Jaźwińska-Tarnawska
- Department of Clinical Pharmacology, Wroclaw Medical University, 50-571 Wroclaw, Poland; (A.G.); (E.J.-T.); (A.W.-H.); (K.G.)
| | | | - Elżbieta Poniewierka
- Department of Gastroenterology and Hepatology, Wroclaw Medical University, 50-571 Wroclaw, Poland; (R.D.); (E.P.)
| | - Anna Wiela-Hojeńska
- Department of Clinical Pharmacology, Wroclaw Medical University, 50-571 Wroclaw, Poland; (A.G.); (E.J.-T.); (A.W.-H.); (K.G.)
| | - Krystyna Głowacka
- Department of Clinical Pharmacology, Wroclaw Medical University, 50-571 Wroclaw, Poland; (A.G.); (E.J.-T.); (A.W.-H.); (K.G.)
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9
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Kayama H, Okumura R, Takeda K. Interaction Between the Microbiota, Epithelia, and Immune Cells in the Intestine. Annu Rev Immunol 2021; 38:23-48. [PMID: 32340570 DOI: 10.1146/annurev-immunol-070119-115104] [Citation(s) in RCA: 310] [Impact Index Per Article: 103.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The gastrointestinal tract harbors numerous commensal bacteria, referred to as the microbiota, that benefit host health by digesting dietary components and eliminating pathogens. The intestinal microbiota maintains epithelial barrier integrity and shapes the mucosal immune system, balancing host defense and oral tolerance with microbial metabolites, components, and attachment to host cells. To avoid aberrant immune responses, epithelial cells segregate the intestinal microbiota from immune cells by constructing chemical and physical barriers, leading to the establishment of host-commensal mutualism. Furthermore, intestinal immune cells participate in the maintenance of a healthy microbiota community and reinforce epithelial barrier functions. Perturbations of the microbiota composition are commonly observed in patients with autoimmune diseases and chronic inflammatory disorders. An understanding of the intimate interactions between the intestinal microbiota, epithelial cells, and immune cells that are crucial for the maintenance of intestinal homeostasis might promote advances in diagnostic and therapeutic approaches for various diseases.
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Affiliation(s)
- Hisako Kayama
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan; , , .,WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan.,Institute for Advanced Co-Creation Studies, Osaka University, Suita, Osaka 565-0871, Japan
| | - Ryu Okumura
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan; , , .,WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kiyoshi Takeda
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka 565-0871, Japan; , , .,WPI Immunology Frontier Research Center, Osaka University, Suita, Osaka 565-0871, Japan
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Boonprasert K, Kosa N, Muhamad P, Cheoymang A, Na-Bangchang K. Association between ABCB1 Polymorphisms and Artesunate-Mefloquine Treatment Responses of Patients with Falciparum Malaria on the Thailand-Myanmar Border. Am J Trop Med Hyg 2021; 104:2152-2158. [PMID: 33939644 DOI: 10.4269/ajtmh.21-0047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/08/2021] [Indexed: 01/29/2023] Open
Abstract
A decrease in the clinical efficacy of a 3-day artesunate-mefloquine combination treatment was reported in the areas of multidrug-resistant Plasmodium falciparum along the Thailand-Myanmar border. The current study investigated the possible contribution of genetic polymorphisms of the three major genes encoding drug efflux transporters, ABCB1, ABCG2, and ABCC1, to responses to the aforementioned treatment in 91 patients with acute uncomplicated falciparum malaria residing along the Thailand-Myanmar border. Patients carrying homozygous mutant genotype ABCB1 c.1236C>T (TT) were found to have a three-times higher chance of successful treatment with this combination compared with other genotypes (CC and CT). Furthermore, whole blood mefloquine concentrations in these patients with the TT genotype were significantly lower than those of patients carrying the CC genotype. Patients with heterozygous mutant genotype (CT), however, were three-times more likely to experience treatment failure. No significant association was found with the ABCG2 and ABCC1 gene polymorphisms. The results suggest that ABCB1 c.1236CT polymorphisms could be useful genetic markers for predicting responses to the 3-day artesunate-mefloquine treatment; however, studies using larger sample sizes in different malaria-endemic areas are necessary to confirm this finding. This study highlights the impact of pharmacogenetic factors on antimalarial treatment responses and the basis for the application of control policies in various malaria-endemic areas.
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Affiliation(s)
- Kanyarat Boonprasert
- 1Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani, Thailand.,2Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani, Thailand
| | - Nanthawat Kosa
- 1Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani, Thailand
| | - Poonuch Muhamad
- 3Drug Discovery Center, Thammasat University (Rangsit Campus), Pathum Thani, Thailand
| | - Anurak Cheoymang
- 1Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani, Thailand
| | - Kesara Na-Bangchang
- 1Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani, Thailand.,2Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani, Thailand.,3Drug Discovery Center, Thammasat University (Rangsit Campus), Pathum Thani, Thailand
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11
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Skrzypczak-Zielinska M, Gabryel M, Marszalek D, Dobrowolska A, Slomski R. NGS study of glucocorticoid response genes in inflammatory bowel disease patients. Arch Med Sci 2021; 17:417-433. [PMID: 33747278 PMCID: PMC7959014 DOI: 10.5114/aoms.2019.84470] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 04/03/2019] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Despite intensive research and a long history of glucocorticoids being applied in various clinical areas, they still generate a challenge for personalized medicine by causing resistance or dependence in nearly 50% of patients treated. The objective of the present study was to determine the genetic predictors of variable reactions in inflammatory bowel disease patients to glucocorticoid therapy. Therefore, based on the current knowledge on how glucocorticoids act, we have compiled a panel of 21 genes for variant analysis: NR3C1, NLRP1, IPO13, FKBP5, HSPA4, ABCB1, STIP1, HSP90AA1, IL-1A, IL-1B, IL-2, IL-4, CXCL8, IL-10, NFKBIA, JUN, MIF, TNF, MAPK14, CYP3A4, and CYP3A5. MATERIAL AND METHODS These genes were analyzed using the amplicon next-generation sequencing method in a group of 139 diagnosed and clinically characterized inflammatory bowel disease patients with a confirmed glucocorticoid response. RESULTS Analysis of all the targeted DNA sequences for the whole patient group indicated 121 different functional variants. After association analyses of 31 selected variants, the polymorphism c.1088A>G in the NR3C1 gene was linked with glucocorticoid resistance (p = 0.002), variant c.241+6A>G of the FKBP5 gene with glucocorticoid sensitivity (p = 0.040), and deletion c.306-7delT in the MAPK14 gene with an adverse therapeutic effect (dependency and resistance, p = 0.041) in ulcerative colitis patients. In Crohn's disease, the change c.2685+49T>C of the ABCB1 gene related to glucocorticoid resistance (p = 0.034). CONCLUSIONS Among the 21 analyzed genes, four (NR3C1, FKBP5, MAPK14, and ABCB1) revealed a significant impact on the glucocorticoid treatment response, which could result in valuable pharmacogenetic biomarkers after being confirmed in other populations and in functional studies.
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Affiliation(s)
| | - Marcin Gabryel
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Poznan, Poland
| | - Daria Marszalek
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland
| | - Agnieszka Dobrowolska
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Poznan, Poland
| | - Ryszard Slomski
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland
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12
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Bilsborough J, Fiorino MF, Henkle BW. Select animal models of colitis and their value in predicting clinical efficacy of biological therapies in ulcerative colitis. Expert Opin Drug Discov 2020; 16:567-577. [PMID: 33245673 DOI: 10.1080/17460441.2021.1851185] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Introduction: Advancing new therapies from discovery to development usually requires proof-of-concept in animal models to justify the costs of continuing the program. While animal models are useful for understanding the mechanism of action (MOA) of a target, limitations of many published colitis models restrict their value to predict clinical efficacy.Areas covered: The authors focused their literature search on published studies of chronic animal models used to evaluate the pre-clinical efficacy of therapeutic molecules subsequently evaluated in clinical trials for UC. The UC therapies evaluated were anti-α4β7, anti-IL13, anti-IL12p40, and anti-IL23p19. The models of chronic colitis evaluating these molecules were: mdra1a-/-, chronic dextran sulfate sodium (DSS), chronic 2,4,6-trinitrobenzene sulfonic acid (TNBS), and the T cell transfer model.Expert opinion: While some models provide insight into target MOA in UC, none is consistently superior in predicting efficacy. Evaluation of multiple models, with varying mechanisms of colitis induction, is needed to understand potential drug efficacy. Additional models of greater complexity, reflecting the disease chronicity/heterogeneity seen in humans, are needed. Although helpful in prioritizing targets, animal models alone will likely not improve outcomes of UC clinical trials. Transformational changes to clinical efficacy will likely only occur when precision medicine approaches are employed.
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Affiliation(s)
- Janine Bilsborough
- IBD Drug Discovery and Development Unit, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Marie F Fiorino
- IBD Drug Discovery and Development Unit, F. Widjaja Foundation Inflammatory Bowel and Immunbiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Bradley W Henkle
- IBD Drug Discovery and Development Unit, F. Widjaja Foundation Inflammatory Bowel and Immunbiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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13
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Patel M, Kumar A, Jayawardena D, Priyamvada S, Anbazhagan AN, Alrefai WA, Gill RK, Dudeja PK, Saksena S. Citrobacter rodentium Infection Inhibits Colonic P-glycoprotein Expression. GENE REPORTS 2020; 18. [PMID: 32864506 DOI: 10.1016/j.genrep.2019.100549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
P-glycoprotein (Pgp/MDR1) serves as a biological barrier that protects intestinal epithelial cells (IECs) by transporting out xenobiotics and bacterial toxins. Decreased Pgp function and expression has been seen in mouse models of inflammatory colitis and also in patients with IBD. Pgp knockout mice spontaneously develop severe colitis, which is also seen in human patients with ulcerative colitis. However, whether Pgp is also altered in infectious colitis is not known. Citrobacter rodentium (CR), a murine pathogen has been shown to cause colonic hyperplasia and colitis in mice by attaching to IECs. The current study investigated the direct effects of Citrobacter rodentium infection on intestinal Pgp expression in mice. Mice were challenged with a single dose of C. rodentium (1 × 109 CFU) by oral gavage for 9 days and Pgp expression in the ileum and colon was measured by real time qRT-PCR and immunofluorescence studies. Our results showed that C. rodentium infection significantly decreased Pgp mRNA and protein expression in the colon, although no significant change was observed in the ileum of mice. These findings suggest that inhibition of the efflux protein, Pgp by C. rodentium can cause perturbations in the intestinal epithelial integrity, which could further lead to the pathogenesis of intestinal inflammation as observed in infectious colitis.
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Affiliation(s)
- Mitul Patel
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Anoop Kumar
- Jesse Brown VA Medical Center, University of Illinois at Chicago, Chicago, IL.,Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Dulari Jayawardena
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Shubha Priyamvada
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Arivarasu N Anbazhagan
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Waddah A Alrefai
- Jesse Brown VA Medical Center, University of Illinois at Chicago, Chicago, IL.,Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Ravinder K Gill
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Pradeep K Dudeja
- Jesse Brown VA Medical Center, University of Illinois at Chicago, Chicago, IL.,Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
| | - Seema Saksena
- Jesse Brown VA Medical Center, University of Illinois at Chicago, Chicago, IL.,Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL
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14
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Costa J, Almonti V, Cacopardo L, Poli D, Rapposelli S, Ahluwalia A. Investigating Curcumin/Intestinal Epithelium Interaction in a Millifluidic Bioreactor. Bioengineering (Basel) 2020; 7:bioengineering7030100. [PMID: 32858899 PMCID: PMC7552770 DOI: 10.3390/bioengineering7030100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 01/25/2023] Open
Abstract
Multidrug resistance is still an obstacle for chemotherapeutic treatments. One of the proteins involved in this phenomenon is the P-glycoprotein, P-gp, which is known to be responsible for the efflux of therapeutic substances from the cell cytoplasm. To date, the identification of a drug that can efficiently inhibit P-gp activity remains a challenge, nevertheless some studies have identified natural compounds suitable for that purpose. Amongst them, curcumin has shown an inhibitory effect on the protein in in vitro studies using Caco-2 cells. To understand if flow can modulate the influence of curcumin on the protein's activity, we studied the uptake of a P-gp substrate under static and dynamic conditions. Caco-2 cells were cultured in bioreactors and in Transwells and the basolateral transport of rhodamine-123 was assessed in the two systems as a function of the P-gp activity. Experiments were performed with and without pre-treatment of the cells with an extract of curcumin or an arylmethyloxy-phenyl derivative to evaluate the inhibitory effect of the natural substance with respect to a synthetic compound. The results indicated that the P-gp activity of the cells cultured in the bioreactors was intrinsically lower, and that the effect of both natural and synthetic inhibitors was up modulated by the presence of flow. Our study underlies the fact that the use of more sophisticated and physiologically relevant in vitro models can bring new insights on the therapeutic effects of natural substances such as curcumin.
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Affiliation(s)
- Joana Costa
- Research Center “E. Piaggio”, University of Pisa, 56122 Pisa, Italy; (L.C.); (D.P.); (A.A.)
- Correspondence:
| | - Vanessa Almonti
- LARF-DIMES, Department of Experimental Medicine, University of Genoa, 16126 Genoa, Italy;
- Centro 3R (Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research), 56122 Pisa, Italy;
| | - Ludovica Cacopardo
- Research Center “E. Piaggio”, University of Pisa, 56122 Pisa, Italy; (L.C.); (D.P.); (A.A.)
| | - Daniele Poli
- Research Center “E. Piaggio”, University of Pisa, 56122 Pisa, Italy; (L.C.); (D.P.); (A.A.)
| | - Simona Rapposelli
- Centro 3R (Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research), 56122 Pisa, Italy;
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy
| | - Arti Ahluwalia
- Research Center “E. Piaggio”, University of Pisa, 56122 Pisa, Italy; (L.C.); (D.P.); (A.A.)
- Centro 3R (Inter-University Center for the Promotion of the 3Rs Principles in Teaching & Research), 56122 Pisa, Italy;
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15
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Kumar A, Priyamvada S, Soni V, Anbazhagan AN, Gujral T, Gill RK, Alrefai WA, Dudeja PK, Saksena S. Angiotensin II inhibits P-glycoprotein in intestinal epithelial cells. Acta Physiol (Oxf) 2020; 228:e13332. [PMID: 31177627 PMCID: PMC6899205 DOI: 10.1111/apha.13332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 05/24/2019] [Accepted: 06/04/2019] [Indexed: 01/15/2023]
Abstract
AIM P-glycoprotein (Pgp/MDR1) plays a major role in intestinal homeostasis. Decrease in Pgp function and expression has been implicated in the pathogenesis of IBD. However, inhibitory mechanisms involved in the decrease of Pgp in inflammation are not fully understood. Angiotensin II (Ang II), a peptide hormone predominantly expressed in the epithelial cells of the crypt-villus junction of the intestine, has been shown to exert pro-inflammatory effects in the gut. It is increased in IBD patients and animals with experimental colitis. Whether Ang II directly influences Pgp is not known. METHODS Pgp activity was measured as verapamil-sensitive 3 H-digoxin flux. Pgp surface expression and exocytosis were measured by cell surface biotinylation studies. Signalling pathways were elucidated by Western blot analysis and pharmacological approaches. RESULTS Ang II (10 nM) significantly inhibited Pgp activity at 60 minutes. Ang II-mediated effects on Pgp function were receptor-mediated as the Ang II receptor 1 (ATR1) antagonist, losartan, blocked Pgp inhibition. Ang II effects on Pgp activity appeared to be mediated via PI3 kinase, p38 MAPK and Akt signalling. Ang II-mediated inhibition of Pgp activity was associated with a decrease in the surface membrane expression of Pgp protein via decreased exocytosis and was found to be dependent on the Akt pathway. Short-term treatment of Ang II (2 mg/kg b.wt., 2 hours) to mice also decreased the membrane expression of Pgp protein levels in ileum and colon. CONCLUSION Our findings provide novel insights into the role of Ang II and ATR1 in decreasing Pgp expression in intestinal inflammation.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Angiotensin II/administration & dosage
- Angiotensin II/pharmacology
- Animals
- Caco-2 Cells
- Dose-Response Relationship, Drug
- Epithelial Cells/drug effects
- Epithelial Cells/metabolism
- Gene Expression Regulation/drug effects
- Humans
- Intestinal Mucosa/cytology
- Mice
- Phosphatidylinositol 3-Kinases/genetics
- Phosphatidylinositol 3-Kinases/metabolism
- Proto-Oncogene Proteins c-akt/genetics
- Proto-Oncogene Proteins c-akt/metabolism
- Receptor, Angiotensin, Type 1/genetics
- Receptor, Angiotensin, Type 1/metabolism
- Receptor, Angiotensin, Type 2/genetics
- Receptor, Angiotensin, Type 2/metabolism
- p38 Mitogen-Activated Protein Kinases/genetics
- p38 Mitogen-Activated Protein Kinases/metabolism
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Affiliation(s)
- Anoop Kumar
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
| | - Shubha Priyamvada
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
| | - Vikas Soni
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
| | - Arivarasu N. Anbazhagan
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
| | - Tarunmeet Gujral
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
| | - Ravinder K Gill
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
| | - Waddah A. Alrefai
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
- Jesse Brown VA Medical Center, Chicago, IL 60612
| | - Pradeep K. Dudeja
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
- Jesse Brown VA Medical Center, Chicago, IL 60612
| | - Seema Saksena
- Division of Gastroenterology & Hepatology, Dept. of Medicine, University of Illinois at Chicago
- Jesse Brown VA Medical Center, Chicago, IL 60612
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16
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MDR1 gene polymorphisms and acute myeloid leukemia AML susceptibility in A Moroccan adult population: A case-control study and meta-analysis. Curr Res Transl Med 2019; 68:29-35. [PMID: 31307954 DOI: 10.1016/j.retram.2019.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 06/24/2019] [Accepted: 06/30/2019] [Indexed: 02/06/2023]
Abstract
INTRODUCTION The multidrug resistance 1 (MDR1) gene plays an important function in carcinogens detoxification and drugs metabolism. Many authors reported that MDR1 gene influences individual susceptibility to cancers. We carried out the present case-control study to investigate the impact of MDR1 gene in the predisposition to acute myeloid leukemia (AML) in a sample of Moroccan population. In addition, we performed a meta-analysis study to discuss our results and to better highlight the influence of MDR1 gene on the susceptibility of AML. METHODS The study included 187 AML patients and 206 controls. Genomic DNA was extracted from white blood cell by salting method. Polymorphisms of G2677 T and C3435 T were genotyped by Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), using Mbo I and Ban I restriction enzymes. Statistical analysis was performed using the software SPSS (version 19.0; SPPS Inc., Chicago, IL, USA) and MedCalcv.11.6.1.0 software. RESULTS No statistically significant differences in genotype and allelic distribution were found in G2677 T and C3435 T polymorphisms between AML cases and controls in the Moroccan population. On the other hand, we found that the age of onset of AML in patients with homozygous mutant genotype was statistically lower than in patients with either the heterozygous or wild type genotype for both polymorphisms (P = 0.006; P = 0.03). Meta-analysis showed a significant association of C3435 T, G2677 T polymorphisms on the susceptibility of AML when considering the recessive and the allelic models. CONCLUSION Our findings showed that the G2677 T and C3435 T polymorphisms of the MDR1 gene were associated with the age at onset of AML in our population. In addition, the meta-analysis showed that these polymorphisms could play a role in susceptibility to AML.
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17
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Castro-López J, Teles M, Fierro C, Allenspach K, Planellas M, Pastor J. Pilot study: duodenal MDR1 and COX2 gene expression in cats with inflammatory bowel disease and low-grade alimentary lymphoma. J Feline Med Surg 2018; 20:759-766. [PMID: 28948903 PMCID: PMC11104148 DOI: 10.1177/1098612x17730708] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Objectives Multidrug resistance 1 (MDR1) encodes a protein called P-glycoprotein (P-gp), which serves as an efflux pump membrane protein implicated in intestinal homeostasis and drug resistance. Cyclooxygenase-2 (COX2) is a key enzyme in the synthesis of proinflammatory prostaglandins, tumourigenesis and in mucosal defence. Despite the importance of MDR1 and COX2, changes in their mRNA levels have not been studied in cats with inflammatory bowel disease (IBD) and low-grade alimentary lymphoma (LGAL). The present study aimed to determine the mRNA levels of MDR1 and COX2 in cats with IBD and LGAL, and to evaluate their correlation with clinical signs, histological severity and between genes. Methods Cats diagnosed with IBD (n = 20) and LGAL (n = 9) between 2008 and 2015 were included in the current study. Three healthy animals composed the healthy control cats group in which endoscopy was performed immediately before the ovariohysterectomy. All duodenal biopsy samples were obtained by endoscopy. Feline chronic enteropathy activity index was calculated for all cases. IBD histopathology was classified according to severity. MDR1 and COX2 mRNA levels were determined by absolute reverse transcriptase-quantitative real-time PCR. Results Statistically significant differences were observed for MDR1 and COX2 mRNA levels between the IBD and LGAL groups. No correlations were observed between molecular gene expression, feline chronic enteropathy activity index and histological grading for IBD, and between MDR1 and COX2 genes. However, a positive statistically significant correlation was observed between MDR1 and COX2 expression in the duodenum of cats. Conclusions and relevance MDR1 and COX2 gene expression is increased in cats with LGAL compared with cats with IBD. The control group tended to have lower values than both diseased groups. These results suggest that these genes may be involved in the pathogenesis of IBD or LGAL in cats.
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Affiliation(s)
- Jorge Castro-López
- Department of Animal Medicine and Surgery, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Fundació Hospital Clínic Veterinari de la Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Mariana Teles
- Department of Cellular Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Camino Fierro
- Department of Cellular Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Karin Allenspach
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine Ames, IA, USA
| | - Marta Planellas
- Department of Animal Medicine and Surgery, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Fundació Hospital Clínic Veterinari de la Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Josep Pastor
- Department of Animal Medicine and Surgery, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Fundació Hospital Clínic Veterinari de la Universitat Autònoma de Barcelona, Bellaterra, Spain
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18
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Mijac D, Vukovic-Petrovic I, Mijac V, Perovic V, Milic N, Djuranovic S, Bojic D, Popovic D, Culafic D, Krstic M, Jankovic G, Pravica V, Markovic M. MDR1 gene polymorphisms are associated with ulcerative colitis in a cohort of Serbian patients with inflammatory bowel disease. PLoS One 2018; 13:e0194536. [PMID: 29543864 PMCID: PMC5854418 DOI: 10.1371/journal.pone.0194536] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 03/05/2018] [Indexed: 12/12/2022] Open
Abstract
Background Inflammatory bowel disease (IBD) is a chronic disease of unknown etiology in which genetic factors contribute to development of disease. Single nucleotide polymorphisms (SNPs) in multidrug resistance 1 (MDR1) gene encoding transporter P-glycoprotein have been associated with IBD, but their role in disease susceptibility remains unclear. Therefore, the aim of this study was to investigate the association of three MDR1 polymorphisms, C1236T (rs1128503), G2677T/A (rs2032582) and C3435T (rs1045642), with Serbian IBD patients. Methods A total of 206 IBD patients, 107 Crohn's disease (CD) and 99 ulcerative colitis (UC), and 255 healthy controls were included in the study. All subjects were genotyped using TaqMan SNP genotyping assays. Comparisons between the groups were performed using the Pearson Chi-square test. False discovery rate according to Benjamini-Hochberg procedure was applied to adjust for multiple comparisons. Results Carriers of T allele of all three MDR1 SNPs were more common in UC patients compared to healthy controls, suggesting predisposing role of T allele of these SNPs in UC pathogenesis. Consistently, TT genotype of C1236T and TTT haplotype were also found more frequently in UC patients. On the other hand, C allele and CC genotype of C1236T and C3435T, as well as G allele and GG genotype of G2677T/A were more frequent in healthy subjects, implying protective role of these variants in UC. Likewise, CGC haplotype and CGC/CGC diplotype were more frequent in controls. Contrary to UC, no statistical difference was observed between CD patients and controls in any of the SNPs analyzed. Conclusion MDR1 gene variants and haplotypes were associated with UC in Serbian IBD patients, further supporting their potential role in susceptibility to UC.
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Affiliation(s)
- Dragana Mijac
- Clinic for Gastroenterology and Hepatology, Faculty of Medicine, University of Belgrade, Clinical Center of Serbia, Belgrade, Serbia
- * E-mail:
| | - Irena Vukovic-Petrovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vera Mijac
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Vladimir Perovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Natasa Milic
- Department for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
- Department of Internal Medicine, Mayo Clinic, Rochester, MN, United States of America
| | - Srdjan Djuranovic
- Clinic for Gastroenterology and Hepatology, Faculty of Medicine, University of Belgrade, Clinical Center of Serbia, Belgrade, Serbia
| | - Daniela Bojic
- Department of Gastroenterology, University Hospital Zvezdara, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Dragan Popovic
- Clinic for Gastroenterology and Hepatology, Faculty of Medicine, University of Belgrade, Clinical Center of Serbia, Belgrade, Serbia
| | - Djordje Culafic
- Clinic for Gastroenterology and Hepatology, Faculty of Medicine, University of Belgrade, Clinical Center of Serbia, Belgrade, Serbia
| | - Miodrag Krstic
- Clinic for Gastroenterology and Hepatology, Faculty of Medicine, University of Belgrade, Clinical Center of Serbia, Belgrade, Serbia
| | - Goran Jankovic
- Clinic for Gastroenterology and Hepatology, Faculty of Medicine, University of Belgrade, Clinical Center of Serbia, Belgrade, Serbia
| | - Vera Pravica
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milos Markovic
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
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19
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Cao W, Kayama H, Chen ML, Delmas A, Sun A, Kim SY, Rangarajan ES, McKevitt K, Beck AP, Jackson CB, Crynen G, Oikonomopoulos A, Lacey PN, Martinez GJ, Izard T, Lorenz RG, Rodriguez-Palacios A, Cominelli F, Abreu MT, Hommes DW, Koralov SB, Takeda K, Sundrud MS. The Xenobiotic Transporter Mdr1 Enforces T Cell Homeostasis in the Presence of Intestinal Bile Acids. Immunity 2017; 47:1182-1196.e10. [PMID: 29262351 PMCID: PMC5741099 DOI: 10.1016/j.immuni.2017.11.012] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 07/27/2017] [Accepted: 11/07/2017] [Indexed: 12/13/2022]
Abstract
CD4+ T cells are tightly regulated by microbiota in the intestine, but whether intestinal T cells interface with host-derived metabolites is less clear. Here, we show that CD4+ T effector (Teff) cells upregulated the xenobiotic transporter, Mdr1, in the ileum to maintain homeostasis in the presence of bile acids. Whereas wild-type Teff cells upregulated Mdr1 in the ileum, those lacking Mdr1 displayed mucosal dysfunction and induced Crohn's disease-like ileitis following transfer into Rag1-/- hosts. Mdr1 mitigated oxidative stress and enforced homeostasis in Teff cells exposed to conjugated bile acids (CBAs), a class of liver-derived emulsifying agents that actively circulate through the ileal mucosa. Blocking ileal CBA reabsorption in transferred Rag1-/- mice restored Mdr1-deficient Teff cell homeostasis and attenuated ileitis. Further, a subset of ileal Crohn's disease patients displayed MDR1 loss of function. Together, these results suggest that coordinated interaction between mucosal Teff cells and CBAs in the ileum regulate intestinal immune homeostasis.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/deficiency
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/immunology
- Acridines/pharmacology
- Adult
- Animals
- Bile Acids and Salts/immunology
- Bile Acids and Salts/metabolism
- Bile Acids and Salts/pharmacology
- Biological Transport
- CD4-Positive T-Lymphocytes/drug effects
- CD4-Positive T-Lymphocytes/immunology
- CD4-Positive T-Lymphocytes/pathology
- Crohn Disease/genetics
- Crohn Disease/immunology
- Crohn Disease/pathology
- Disease Models, Animal
- Female
- Gene Expression Regulation
- Homeodomain Proteins/genetics
- Homeodomain Proteins/immunology
- Homeostasis/immunology
- Humans
- Ileitis/genetics
- Ileitis/immunology
- Ileitis/pathology
- Ileum/immunology
- Ileum/pathology
- Immunity, Mucosal
- Intestinal Mucosa/immunology
- Intestinal Mucosa/pathology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Middle Aged
- Oxidative Stress
- Signal Transduction
- Tetrahydroisoquinolines/pharmacology
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Affiliation(s)
- Wei Cao
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Hisako Kayama
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Mei Lan Chen
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Amber Delmas
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Amy Sun
- Department of Pathology , New York University School of Medicine, New York, NY 10016, USA
| | - Sang Yong Kim
- Rodent Genetic Engineering Core , New York University School of Medicine, New York, NY 10016, USA
| | - Erumbi S Rangarajan
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Kelly McKevitt
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Amanda P Beck
- Department of Veterinary Sciences, MD Anderson Cancer Center, Bastrop, TX 78602, USA
| | - Cody B Jackson
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Gogce Crynen
- Bioinformatics Core Facility, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Angelos Oikonomopoulos
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Precious N Lacey
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Gustavo J Martinez
- Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - Tina Izard
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Robin G Lorenz
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Alex Rodriguez-Palacios
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Fabio Cominelli
- Digestive Health Research Institute, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA
| | - Maria T Abreu
- Division of Gastroenterology, Department of Medicine, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Daniel W Hommes
- Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Sergei B Koralov
- Department of Pathology , New York University School of Medicine, New York, NY 10016, USA
| | - Kiyoshi Takeda
- Department of Microbiology and Immunology, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Mark S Sundrud
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA.
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20
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Glymenaki M, Barnes A, O'Hagan S, Warhurst G, McBain AJ, Wilson ID, Kell DB, Else KJ, Cruickshank SM. Stability in metabolic phenotypes and inferred metagenome profiles before the onset of colitis-induced inflammation. Sci Rep 2017; 7:8836. [PMID: 28821731 PMCID: PMC5562868 DOI: 10.1038/s41598-017-08732-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 07/12/2017] [Indexed: 02/07/2023] Open
Abstract
Inflammatory bowel disease (IBD) is associated with altered microbiota composition and metabolism, but it is unclear whether these changes precede inflammation or are the result of it since current studies have mainly focused on changes after the onset of disease. We previously showed differences in mucus gut microbiota composition preceded colitis-induced inflammation and stool microbial differences only became apparent at colitis onset. In the present study, we aimed to investigate whether microbial dysbiosis was associated with differences in both predicted microbial gene content and endogenous metabolite profiles. We examined the functional potential of mucus and stool microbial communities in the mdr1a -/- mouse model of colitis and littermate controls using PICRUSt on 16S rRNA sequencing data. Our findings indicate that despite changes in microbial composition, microbial functional pathways were stable before and during the development of mucosal inflammation. LC-MS-based metabolic phenotyping (metabotyping) in urine samples confirmed that metabolite profiles in mdr1a -/- mice were remarkably unaffected by development of intestinal inflammation and there were no differences in previously published metabolic markers of IBD. Metabolic profiles did, however, discriminate the colitis-prone mdr1a -/- genotype from controls. Our results indicate resilience of the metabolic network irrespective of inflammation. Importantly as metabolites differentiated genotype, genotype-differentiating metabolites could potentially predict IBD risk.
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Affiliation(s)
- M Glymenaki
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - A Barnes
- Shimadzu Corporation, Manchester, UK
| | - S O'Hagan
- School of Chemistry, University of Manchester, Manchester, UK; Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
| | - G Warhurst
- Infection, Injury and Inflammation Research Group, Division of Medicine and Neurosciences, University of Manchester and Salford Royal Hospitals NHS Trust, Salford, UK
| | - A J McBain
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - I D Wilson
- Section of Biomolecular Medicine, Division of Computational and Systems Medicine, Department of Surgery and Cancer, Imperial College, London, UK
| | - D B Kell
- School of Chemistry, University of Manchester, Manchester, UK; Manchester Institute of Biotechnology, University of Manchester, Manchester, UK
| | - K J Else
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - S M Cruickshank
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
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21
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Zhao C, Zhao Q, Zhang C, Wang G, Yao Y, Huang X, Zhan F, Zhu Y, Shi J, Chen J, Yan F, Zhang Y. miR-15b-5p resensitizes colon cancer cells to 5-fluorouracil by promoting apoptosis via the NF-κB/XIAP axis. Sci Rep 2017. [PMID: 28646148 PMCID: PMC5482850 DOI: 10.1038/s41598-017-04172-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Drug resistance, which is closely correlated with an imbalance in apoptosis, endows colorectal cancer (CRC) with enhanced progression capacity irrespective of the treatment with therapeutics. We report that miR-15b-5p is a tumor suppressor whose level is globally decreased in CRC cells and tissues. Over-expression of miR-15b-5p not only promoted 5-fluorouracil (5-FU)-induced cellular apoptosis but also reversed the chemoresistance of 5-FU in vitro and in vivo. As a key mediator of inflammation-induced cancer, miR-15b-5p enhances these therapeutic effects are mainly attributed to targeting of the NF-κB signaling pathway through negative regulation of NF-κB1 and one of its kinase complexes IKK-α. miR-15b-5p mediates NF-ĸB regulation by targeting the anti-apoptosis protein XIAP in vitro. Together, these results establish an axis of miR-15b-mediated apoptosis regulation, which reverses chemoresistance and suppresses CRC progression. These findings suggest that miR-15b-5p may be a potential agent for CRC treatment, particularly for 5-FU-resistant CRC.
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Affiliation(s)
- Ci Zhao
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China.,Translation Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, 150000, China
| | - Qi Zhao
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China.,Translation Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, 150000, China
| | - Chunhui Zhang
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Guangyu Wang
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Yuanfei Yao
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Xiaoyi Huang
- Translation Medicine Research and Cooperation Center of Northern China, Heilongjiang Academy of Medical Sciences, Harbin, 150000, China.,Department of Biotherapy, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Fei Zhan
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Yuanyuan Zhu
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Jiaqi Shi
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Jianan Chen
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Feihu Yan
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China
| | - Yanqiao Zhang
- Department of Gastrointestinal Medical Oncology, The Affiliated Tumor Hospital of Harbin Medical University, Harbin, 150000, China.
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22
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Yamamoto-Furusho JK. Pharmacogenetics in inflammatory bowel disease: understanding treatment response and personalizing therapeutic strategies. Pharmgenomics Pers Med 2017; 10:197-204. [PMID: 28603427 PMCID: PMC5457182 DOI: 10.2147/pgpm.s109648] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic and heterogeneous disorder characterized by remitting and relapsing periods of activity. Pharmacogenetics refers to the study of the effect of inheritance on individual variation in drug responses. Several drug-related markers in IBD patients have been identified in order to predict the response to medical treatment including biological therapy as well as the reduction of adverse events. In the future, the treatment of IBD should be personalized in its specific profile to provide the most efficacious treatment with lack of adverse events.
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Affiliation(s)
- Jesús K Yamamoto-Furusho
- Inflammatory Bowel Disease Clinic, Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Tlalpan, Mexico
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23
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Bouzidi A, Mesbah-Amroun H, Boukercha A, Benhassine F, Belboueb R, Berkouk K, Messadi W, Touil-Boukoffa C. Association between MDR1 gene polymorphisms and the risk of Crohn's disease in a cohort of Algerian pediatric patients. Pediatr Res 2016; 80:837-843. [PMID: 27603561 DOI: 10.1038/pr.2016.163] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 06/21/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND The multi-drug resistance gene (MDR1) has raised increasing interest as a susceptibility gene for Crohn's disease (CD). The role of MDR1 single-nucleotide polymorphisms (SNPs) in the predisposition and behavior of CD in the pediatric population is still elusive. Here, we investigated whether SNPs in MDR1 are associated with CD in Algerian pediatric patients. METHODS A case-control study was conducted enrolling 47 pediatric CD patients and 100 controls. All subjects were genotyped for the most common MDR1 SNPs (C3434T, C1236T, and G2677A/T) using PCR-RFLP method. We also explored the association between polymorphisms and clinical sub-phenotypes. RESULTS We have detected no significant association of C3435T SNP and pediatric CD. However, we observed a significantly higher frequency of the risk alleles, 1236T and 2677T/A among the CD patients compared to controls. Moreover, the risk allele 1236T was associated to a higher risk for resective surgery. CONCLUSION Our data suggest that the C1236T and G2677A/T SNPs in the MDR1 gene are associated with CD and the C1236T risk allele with a more severe course of disease in Algerian pediatric patients. Further analysis using larger patients group and functional studies would be interesting to elucidate the role of MDR1 gene in pediatric CD.Pediatric Research (2016); doi:10.1038/pr.2016.163.
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Affiliation(s)
- Amira Bouzidi
- Department of Cellular and Molecular Biology, Cytokines and NO Synthases -Immunity and Pathogeny Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
| | - Hamida Mesbah-Amroun
- Department of Cellular and Molecular Biology, Cytokines and NO Synthases -Immunity and Pathogeny Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
| | - Aziza Boukercha
- Department of Cellular and Molecular Biology, Cytokines and NO Synthases -Immunity and Pathogeny Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
| | | | - Réda Belboueb
- Department of Pediatrics, University Hospital Center Mustapha Bacha, Algiers, Algeria
| | - Karima Berkouk
- Department of Pediatrics, University Hospital Center Lamine Debaghine, Algiers, Algeria
| | - Wassila Messadi
- Department of Pediatrics, University Hospital Center Issaad Hassani, Algiers, Algeria
| | - Chafia Touil-Boukoffa
- Department of Cellular and Molecular Biology, Cytokines and NO Synthases -Immunity and Pathogeny Team, Faculty of Biological Sciences, University of Sciences and Technology Houari Boumediene, Algiers, Algeria
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24
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Abstract
Ulcerative colitis is a common chronic inflammatory disease of the colon and rectum, resulting from a dysregulated immune response towards intraluminal antigens in a genetically predisposed host. The disease has a varying extent and severity. Approximately 20% of patients with ulcerative colitis experience a severe flare during the course of their disease, requiring hospitalization. Acute severe ulcerative colitis (ASUC) is potentially a life-threatening condition that requires early recognition, hospitalization, correction of body fluids and electrolytes, and nutritional support if needed. Superimposed bacterial or viral infections need to be excluded and thromboprophylaxis should be started. Intravenous corticosteroids are the first-line treatment for this condition. Rescue treatment with ciclosporin or infliximab is indicated in patients who do not sufficiently respond to corticosteroids after 3-5 days, with close monitoring of the patients' symptoms, serum C-reactive protein and albumin levels. If medical therapy fails, timely colectomy should be performed to prevent critical complications. In this article, we review all relevant aspects of ASUC, from its pathophysiological background to modern management in clinical practice.
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25
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Pérez-Bosque A, Miró L, Maijó M, Polo J, Campbell JM, Russell L, Crenshaw JD, Weaver E, Moretó M. Oral Serum-Derived Bovine Immunoglobulin/Protein Isolate Has Immunomodulatory Effects on the Colon of Mice that Spontaneously Develop Colitis. PLoS One 2016; 11:e0154823. [PMID: 27139220 PMCID: PMC4854409 DOI: 10.1371/journal.pone.0154823] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 04/19/2016] [Indexed: 12/30/2022] Open
Abstract
Dietary immunoglobulin concentrates prepared from animal plasma can modulate the immune response of gut-associated lymphoid tissue (GALT). Previous studies have revealed that supplementation with serum-derived bovine immunoglobulin/protein isolate (SBI) ameliorates colonic barrier alterations in the mdr1a-/- genetic mouse model of IBD. Here, we examine the effects of SBI on mucosal inflammation in mdr1a-/- mice that spontaneously develop colitis. Wild type (WT) mice and mice lacking the mdr1a gene (KO) were fed diets supplemented with either SBI (2% w/w) or milk proteins (Control diet), from day 21 (weaning) until day 56. Leucocytes in mesenteric lymph nodes (MLN) and in lamina propria were determined, as was mucosal cytokine production. Neutrophil recruitment and activation in MLN and lamina propria of KO mice were increased, but were significantly reduced in both by SBI supplementation (p < 0.05). The increased neutrophil recruitment and activation observed in KO mice correlated with increased colon oxidative stress (p < 0.05) and SBI supplementation reduced this variable (p < 0.05). The Tact/Treg lymphocyte ratios in MLN and lamina propria were also increased in KO animals, but SBI prevented these changes (both p < 0.05). In the colon of KO mice, there was an increased production of mucosal pro-inflammatory cytokines such as IL-2 (2-fold), IL-6 (26-fold) and IL-17 (19-fold), and of chemokines MIP-1β (4.5-fold) and MCP-1 (7.2-fold). These effects were significantly prevented by SBI (p < 0.05). SBI also significantly increased TGF-β secretion in the colon mucosa, suggesting a role of this anti-inflammatory cytokine in the modulation of GALT and the reduction of the severity of the inflammatory response during the onset of colitis.
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Affiliation(s)
- Anna Pérez-Bosque
- Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació and Institut de Nutrició i Seguretat Alimentària, Universitat de Barcelona (UB), Barcelona, Spain
- * E-mail:
| | - Lluïsa Miró
- Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació and Institut de Nutrició i Seguretat Alimentària, Universitat de Barcelona (UB), Barcelona, Spain
| | - Mònica Maijó
- Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació and Institut de Nutrició i Seguretat Alimentària, Universitat de Barcelona (UB), Barcelona, Spain
| | | | | | | | | | - Eric Weaver
- EnteraHealth, Cary, NC, United States of America
| | - Miquel Moretó
- Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació and Institut de Nutrició i Seguretat Alimentària, Universitat de Barcelona (UB), Barcelona, Spain
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26
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Abstract
Pathogenesis of the inflammatory bowel diseases (IBDs), such as ulcerative colitis (UC) and Crohn's disease (CD), involve proinflammatory changes within the microbiota, chronic immune-mediated inflammatory responses, and epithelial dysfunction. Converging data from genome-wide association studies, mouse models of IBD, and clinical trials indicate that cytokines are key effectors of both normal homeostasis and chronic inflammation in the gut. Yet many questions remain concerning the role of specific cytokines in different IBDs within distinct regions of the gut, and regarding cellular mechanisms of action. In this article, we review current and emerging concepts concerning the role of cytokines in IBD with a focus on immune regulation, T cell subsets, and potential clinical applications.
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27
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Abstract
Pathogenesis of the inflammatory bowel diseases (IBDs), such as ulcerative colitis (UC) and Crohn's disease (CD), involve proinflammatory changes within the microbiota, chronic immune-mediated inflammatory responses, and epithelial dysfunction. Converging data from genome-wide association studies, mouse models of IBD, and clinical trials indicate that cytokines are key effectors of both normal homeostasis and chronic inflammation in the gut. Yet many questions remain concerning the role of specific cytokines in different IBDs within distinct regions of the gut, and regarding cellular mechanisms of action. In this article, we review current and emerging concepts concerning the role of cytokines in IBD with a focus on immune regulation, T cell subsets, and potential clinical applications.
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Affiliation(s)
- Mei Lan Chen
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, FL 33458 USA
| | - Mark S. Sundrud
- Department of Cancer Biology, The Scripps Research Institute, Jupiter, FL 33458 USA
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28
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Priyamvada S, Anbazhagan AN, Kumar A, Soni V, Alrefai WA, Gill RK, Dudeja PK, Saksena S. Lactobacillus acidophilus stimulates intestinal P-glycoprotein expression via a c-Fos/c-Jun-dependent mechanism in intestinal epithelial cells. Am J Physiol Gastrointest Liver Physiol 2016; 310:G599-608. [PMID: 26867563 PMCID: PMC4836133 DOI: 10.1152/ajpgi.00210.2015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 02/05/2016] [Indexed: 02/08/2023]
Abstract
Our previous studies showed that Lactobacillus acidophilus (LA) culture supernatant (CS) increased P-glycoprotein [Pgp/multidrug resistance 1 (MDR1)] function, expression, and promoter activity in Caco-2 cells. The current studies were designed to elucidate the molecular mechanisms mediating the stimulatory effects of LA CS on Pgp promoter activity. Deletion analysis indicated that the LA CS response element(s) is located in the -172/+428-bp region, and sequence analysis of this region revealed three potential binding sites for c-Fos or c-Jun: proximal activating protein (AP) 1a (-119/-98 bp), distal AP1b (-99/-78 bp), and AP1c (+175/+196 bp). LA CS (24 h) showed an approximately twofold increase in the protein expression of c-Fos and c-Jun in Caco-2 cells. Electrophoretic mobility shift assay showed that LA CS markedly increased the binding of Caco-2 nuclear proteins to AP1a and AP1b, but not AP1c. The DNA-protein complex was completely eliminated by c-Fos antibody, while c-Jun antibody partially eliminated the complex. Chromatin immunoprecipitation analysis also showed that LA CS enhanced the association of c-Fos and c-Jun (by ∼4- and 1.5-fold, respectively) with endogenous Pgp promoter in Caco-2 cells (p-172/+1). Interestingly, overexpression of c-Fos or c-Jun activated Pgp promoter by nearly twofold each. This increase was further enhanced (∼14-fold) when c-Fos and c-Jun were simultaneously overexpressed, suggesting that the presence of one of these transcription factors potentiates the effect of the other. These studies, for the first time, provide evidence for the involvement of c-Fos/c-Jun in stimulation of Pgp gene expression by LA CS in the human intestine.
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Affiliation(s)
- Shubha Priyamvada
- 1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Arivarasu N. Anbazhagan
- 1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Anoop Kumar
- 1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Vikas Soni
- 1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Waddah A. Alrefai
- 1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and ,2Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Ravinder K. Gill
- 1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
| | - Pradeep K. Dudeja
- 1Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and ,2Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Seema Saksena
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois; and
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29
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Andersen V, Svenningsen K, Knudsen LA, Hansen AK, Holmskov U, Stensballe A, Vogel U. Novel understanding of ABC transporters ABCB1/MDR/P-glycoprotein, ABCC2/MRP2, and ABCG2/BCRP in colorectal pathophysiology. World J Gastroenterol 2015; 21:11862-11876. [PMID: 26557010 PMCID: PMC4631984 DOI: 10.3748/wjg.v21.i41.11862] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 08/07/2015] [Accepted: 09/30/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate ATP-binding cassette (ABC) transporters in colonic pathophysiology as they had recently been related to colorectal cancer (CRC) development.
METHODS: Literature search was conducted on PubMed using combinations of the following terms: ABC transporters, ATP binding cassette transporter proteins, inflammatory bowel disease, ulcerative, colitis, Crohns disease, colorectal cancer, colitis, intestinal inflammation, intestinal carcinogenesis, ABCB1/P-glycoprotein (P-gp/CD243/MDR1), ABCC2/multidrug resistance protein 2 (MRP2) and ABCG2/breast cancer resistance protein (BCRP), Abcb1/Mdr1a, abcc2/Mrp2, abcg2/Bcrp, knock-out mice, tight junction, membrane lipid function.
RESULTS: Recently, human studies reported that changes in the levels of ABC transporters were early events in the adenoma-carcinoma sequence leading to CRC. A link between ABCB1, high fat diet and gut microbes in relation to colitis was suggested by the animal studies. The finding that colitis was preceded by altered gut bacterial composition suggests that deletion of Abcb1 leads to fundamental changes of host-microbiota interaction. Also, high fat diet increases the frequency and severity of colitis in specific pathogen-free Abcb1 KO mice. The Abcb1 KO mice might thus serve as a model in which diet/environmental factors and microbes may be controlled and investigated in relation to intestinal inflammation. Potential molecular mechanisms include defective transport of inflammatory mediators and/or phospholipid translocation from one side to the other of the cell membrane lipid bilayer by ABC transporters affecting inflammatory response and/or function of tight junctions, phagocytosis and vesicle trafficking. Also, diet and microbes give rise to molecules which are potential substrates for the ABC transporters and which may additionally affect ABC transporter function through nuclear receptors and transcriptional regulation. Another critical role of ABCB1 was suggested by the finding that ABCB1 expression identifies a subpopulation of pro-inflammatory Th17 cells which were resistant to treatment with glucocorticoids. The evidence for the involvement of ABCC2 and ABCG2 in colonic pathophysiology was weak.
CONCLUSION: ABCB1, diet, and gut microbes mutually interact in colonic inflammation, a well-known risk factor for CRC. Further insight may be translated into preventive and treatment strategies.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B/genetics
- ATP Binding Cassette Transporter, Subfamily B/metabolism
- ATP Binding Cassette Transporter, Subfamily G, Member 2
- ATP-Binding Cassette Transporters/genetics
- ATP-Binding Cassette Transporters/metabolism
- Animals
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- Colorectal Neoplasms/genetics
- Colorectal Neoplasms/metabolism
- Colorectal Neoplasms/pathology
- Colorectal Neoplasms/physiopathology
- Disease Models, Animal
- Genetic Predisposition to Disease
- Humans
- Inflammatory Bowel Diseases/genetics
- Inflammatory Bowel Diseases/metabolism
- Inflammatory Bowel Diseases/pathology
- Inflammatory Bowel Diseases/physiopathology
- Mice, Transgenic
- Multidrug Resistance-Associated Protein 2
- Multidrug Resistance-Associated Proteins/genetics
- Multidrug Resistance-Associated Proteins/metabolism
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Phenotype
- Polymorphism, Genetic
- Tumor Microenvironment
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30
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Abstract
Genetic factors play a significant role in determining inflammatory bowel disease (IBD) susceptibility. Epidemiologic data support genetic contribution to the pathogenesis of IBD, which include familial aggregation, twin studies, and racial and ethnic differences in disease prevalence. Recently, several new genes have been identified to be involved in the genetic susceptibility to IBD. The characterization of novel genes potentially will lead to the identification of therapeutic agents and clinical assessment of phenotype and prognosis in patients with IBD. The development of genetic markers associated with clinical outcomes in patients with IBD will be very important in the future. The progress of molecular biology tools (microarrays, proteomics, and epigenetics) have progressed the field of the genetic markers discovery. The advances in bioinformatics coupled with cross-disciplinary collaborations have greatly enhanced our ability to retrieve, characterize, and analyze large amounts of data generated by the technological advances. The techniques available for markers development are genomics (single nucleotide polymorphism genotyping, pharmacogenetics, and gene expression analyses) and proteomics. This could be a potential great benefit in predicting the course of disease in individual patients and in guiding appropriate medical therapy.
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31
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Mohammadi M, Zahedi MJ, Nikpoor AR, Nazem M, Khazaeli P, Hayatbakhsh MM. Determination of Vitamin D Serum Levels and Status of the C3435T Polymorphism of Multidrug Resistance 1 Gene in Southeastern Iranian Patients with Ulcerative Colitis. Middle East J Dig Dis 2015; 7:245-52. [PMID: 26609354 PMCID: PMC4655846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is a multi-factorial autoimmune disease. P-glycoprotein is encoded by the multidrug resistance 1 (MDR1) gene. The C3435T polymorphism in the MDR1 gene is correlated with low P-glycoprotein expression. Additionally, vitamin D has regulatory effects on the immune system. The aim of our study was to determine the association between the C3435T MDR1 polymorphism and UC and to detect the vitamin D serum levels in patients with UC. METHODS One hundred healthy controls and 85 patients with UC were evaluated. Polymerase chain reaction-restriction fragment length polymorphism (PCRRFLP) was used to detect the C3435T MDR1 polymorphisms. Serum levels of vitamin D were measured by Enzyme-linked immunosorbent assay (ELISA). The research was performed in Kerman, Iran, from 2011 to 2013. RESULTS We could not find any association between the C3435T MDR1 polymorphism and susceptibility to UC. There was a significant decrease in serum levels of vitamin D in patients with UC compared with healthy controls (p<0.001). CONCLUSION Controversies regarding the association between the C3435T MDR1 polymorphism with UC have been reported in different populations. The difference between our results and others may be attributed to the heterogeneity of the Iranian population and the sample size. Additionally, our data indicated that UC might be correlated with vitamin D insufficiency. Therefore, the administration of vitamin D might be suggested as a valuable treatment for patients with UC.
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Affiliation(s)
- Mojgan Mohammadi
- 1 Allergy Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
,2 Physiology Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran.
| | - Mohammad Javad Zahedi
- 3 Department of Gastroenterology, Afzalipour Hospital, Kerman University of Medical Sciences, Kerman, Iran
| | - Amin Reza Nikpoor
- 4 Department of Immunology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehdi Nazem
- 5 Pharmaceutics Department, Kerman University of Medical Sciences, Kerman, Iran
| | - Payam Khazaeli
- 5 Pharmaceutics Department, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Mahdi Hayatbakhsh
- 3 Department of Gastroenterology, Afzalipour Hospital, Kerman University of Medical Sciences, Kerman, Iran
,6 Gastroenterology and Hepatology Research Center, Institute of Basic and Clinical Physiology sciences, kerman University of medical Sciences, Kerman, Iran
, Corresponding Author: Mohammad Mahdi Hayatbakhsh, MD Department of Gastroenterology, Afzalipour Hospital, Kerman University of Medical Sciences, Kerman, Iran Telefax: +98 34 33222270
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miR-195 plays a role in steroid resistance of ulcerative colitis by targeting Smad7. Biochem J 2015; 471:357-67. [PMID: 26303523 DOI: 10.1042/bj20150095] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 08/24/2015] [Indexed: 12/18/2022]
Abstract
An imbalance in pro- and anti-inflammation is an important mechanism of steroid resistance in UC (ulcerative colitis), and miRNAs may participate in this process. The present study aimed to explore whether miRNAs play a role in the steroid resistance of UC by regulating gene expression of the inflammation signal pathway. SS (steroid-sensitive) patients, SR (steroid-resistant) patients and healthy individuals were recruited. In vivo miRNA profiles of serum samples showed that miR-195 was decreased significantly in the SR group compared with the SS group (P<0.05). This result was confirmed by qPCR (quantitative real-time PCR) and miRNA ISH (in situ hybridization) in serum and colon tissue samples. Online software was used to identify Smad7 mRNA as a potential target of miR-195. The direct interaction of miR-195 and Smad7 mRNA was investigated using a biotinylated miR-195 pull-down assay. Overexpression of a miR-195 precursor lowered cellular levels of Smad7 protein; conversely, antagonism of miR-195 enhanced Smad7 translation without disturbing Smad7 mRNA levels. A luciferase reporter assay revealed a repressive effect of miR-195 via a single Smad7 3'-UTR target site, and point mutation of this site prevented miR-195-induced repression of Smad7 translation. Furthermore, increased levels of miR-195 led to a decrease in c-Jun and p65 expression. In contrast, transfection with anti-miR-195 led to increased levels of c-Jun and p65 protein. The decrease in miR-195 led to an increase in Smad7 expression and corresponding up-regulation of p65 and the AP-1 (activator protein 1) pathway, which might explain the mechanism of steroid resistance in UC patients.
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Jaźwińska-Tarnawska E, Jęśkowiak I, Waszczuk E, Mulak A, Głowacka K, Hurkacz M, Paradowski L, Zaleska Z, Wiela-Hojeńska A. Genetic polymorphism of ABCB1 gene (C3435T) in patients with inflammatory bowel diseases. Is there any gender dependency? Pharmacol Rep 2014; 67:294-8. [PMID: 25712653 DOI: 10.1016/j.pharep.2014.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 09/28/2014] [Accepted: 09/30/2014] [Indexed: 01/14/2023]
Abstract
BACKGROUND In recent years, an increasing incidence of inflammatory bowel disease (IBD) has been reported, mainly as Crohn's disease (CD) and ulcerative colitis (UC). The individual susceptibility, the disease's course and response to the applied therapy is likely due to genetic factors such as ABCB1 gene mutations, exemplified by C3435T polymorphism. The aim of the study was to evaluate the distribution of C3435T polymorphism regarding the gender in IBD patients and control subjects from Lower Silesia region and its possible association with IBD susceptibility. METHODS The research was conducted in groups of 61 IBD patients and 101 healthy subjects from the Lower Silesia region. Polymorphism of C3435T was determined using PCR-RFLP method. RESULTS Frequency distributions of C3435T genotype and of 3435T or 3435C gene alleles of IBD, CD or UC patients were compared to control group; each treated as a whole or split further by gender. The statistically significant correlation was discovered between gender and C3435T genotype both for IBD and CD patients, with 3435CT heterozygote prevailing in IBD and CD males. Odds ratio calculations revealed statistically significant difference for the 3435CT genotype between control and: IBD group considered as a whole; IBD males; CD males; and for 3435TT variant between control and IBD males. Conclusions. The 3435CT genotype could be a risk factor for IBD and CD in men. The 3435TT genotype in males seems to be associated with the lower chance of IBD presence.
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Affiliation(s)
| | - Izabela Jęśkowiak
- Department of Clinical Pharmacology Wroclaw Medical University, Wrocław, Poland
| | - Ewa Waszczuk
- Department of Gastroenterology and Hepatology Wroclaw Medical University, Wrocław, Poland
| | - Agata Mulak
- Department of Gastroenterology and Hepatology Wroclaw Medical University, Wrocław, Poland
| | - Krystyna Głowacka
- Department of Clinical Pharmacology Wroclaw Medical University, Wrocław, Poland.
| | - Magdalena Hurkacz
- Department of Clinical Pharmacology Wroclaw Medical University, Wrocław, Poland
| | - Leszek Paradowski
- Department of Gastroenterology and Hepatology Wroclaw Medical University, Wrocław, Poland
| | - Zofia Zaleska
- Department of Clinical Pharmacology Wroclaw Medical University, Wrocław, Poland
| | - Anna Wiela-Hojeńska
- Department of Clinical Pharmacology Wroclaw Medical University, Wrocław, Poland.
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34
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Zhang D, Wang C, Zhou Z. Meta-Analysis of ABCB1 3435C>T Polymorphism and Colorectal Cancer. Pak J Med Sci 2014; 29:1269-74. [PMID: 24353734 PMCID: PMC3858949 DOI: 10.12669/pjms.295.3758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 07/05/2013] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE Many studies have focused on the association between the ABCB1 3435C>T polymorphism and colorectal cancer (CRC) risk. However, the results were conflicting. The aim of this meta-analysis is to evaluate the precise association between this polymorphism and CRC risk. METHODS We formally reviewed the literature at Pubmed, EMBASE and the Cochrane Library with the key words as follows: ABCB1/MDR1/P-glycoprotein, polymorphism, colorectal and cancer/neoplasm/tumor. This meta-analysis was assessed by Review manager 5.0. The fixed-effects model was used to pool the odds ratios (OR) with 95% confidence intervals (CI) for CRC risk. RESULTS There were 8 studies identified. The pooled OR with 95% CI of CC+CT versus TT genotype of the ABCB1 3435C>T polymorphism for CRC risk was 1.01 [0.90-1.13]. The sensitivity analysis further confirmed the result. Heterogeneity and publication bias were not observed in this meta-analysis. CONCLUSIONS In summary, there was no significant association between the ABCB1 3435C>T polymorphism and CRC risk. Abbreviations used: the ATP-binding cassette, subfamily B, member 1 (ABCB1); multidrug resistance gene 1 (MDR1); P-glycoprotein (P-gp); colorectal cancer (CRC); single nucleotide polymorphisms (SNPs); odds ratio (OR); confidence interval (CI); Hardy-Weinberg equilibrium (HWE).
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Affiliation(s)
- Dan Zhang
- Dan Zhang, Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, No. 37 on Guoxue Xiang, Chengdu, Sichuan Province, China
| | - Cun Wang
- Cun Wang, Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, No. 37 on Guoxue Xiang, Chengdu, Sichuan Province, China
| | - Zongguang Zhou
- Zongguang Zhou Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, No. 37 on Guoxue Xiang, Chengdu, Sichuan Province, China
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Tahara T, Shibata T, Okubo M, Ishizuka T, Kawamura T, Yamashita H, Nakamura M, Nakagawa Y, Nagasaka M, Arisawa T, Ohmiya N, Hirata I. Effect of RANTES gene promoter genotypes in patients with ulcerative colitis. Biomed Rep 2014; 2:602-606. [PMID: 24944817 DOI: 10.3892/br.2014.287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 05/16/2014] [Indexed: 12/12/2022] Open
Abstract
A complex interaction of genetic and environmental factors is closely associated with the development of inflammatory bowel disease. Previous studies reported that the expression of the regulated upon activation, normal T-cell expressed and secreted (RANTES) gene is enhanced in the colonic mucosa of ulcerative colitis (UC). Quantitative differences in RANTES gene expression among numerous promoter genotypes have also been reported. The aim of the present study was to clarify the effect of RANTES promoter polymorphism on the risk of UC, including its clinical phenotypes. A total of 150 UC patients and 372 healthy control (HC) subjects participated in the study. The UC patients were classified by disease behavior, severity and extent of disease. Restriction fragment length polymorphism analysis was performed for polymorphisms at -28 C/G in the RANTES gene promoter region. Although no significant difference of the RANTES promoter genotype distribution was observed between the HC and UC groups, the G/G genotype was significantly higher among female (OR=3.95, 95% CI=1.22-12.82, P=0.03), non-steroid dependent (OR=3.37, 95% CI=1.16-9.85, P=0.03) and non-refractory (OR=3.76, 95% CI=1.29-10.98, P=0.02) UC patients. The G carrier was also found to be associated with an increased risk of rectal colitis (OR=2.21, 95% CI=1.12-4.39, P=0.03). The data indicate that the polymorphism of the RANTES promoter is not directly associated with the susceptibility to UC, but the -28 G allele is associated with female UC patients and mild clinical phenotypes of UC, including non-steroid dependency, non-refractory and rectal colitis.
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Affiliation(s)
- Tomomitsu Tahara
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomoyuki Shibata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masaaki Okubo
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Takamitsu Ishizuka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomohiko Kawamura
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Hiromi Yamashita
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masakatsu Nakamura
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa 920-0293, Japan
| | - Yoshihito Nakagawa
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Mitsuo Nagasaka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomiyasu Arisawa
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa 920-0293, Japan
| | - Naoki Ohmiya
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Ichiro Hirata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
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Tahara T, Shibata T, Okubo M, Ishizuka T, Kawamura T, Yamashita H, Nakamura M, Nakagawa Y, Nagasaka M, Arisawa T, Ohmiya N, Hirata I. Heat-shock protein 70-2 BB genotype is associated with reduced risks of the steroid-dependent and refractory phenotypes of ulcerative colitis. Biomed Rep 2014; 2:555-558. [PMID: 24944807 DOI: 10.3892/br.2014.288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Accepted: 05/16/2014] [Indexed: 01/03/2023] Open
Abstract
Previous studies have demonstrated the protective role of inducible heat-shock protein (HSP) 70 in intestinal cells. The HSP70-2 gene has a PstI site due to an A-G transition at the 1,267 position and different genotypes are associated with various levels of mRNA expression. The present study aimed to clarify the effect of the HSP70-2 polymorphism on the risk of ulcerative colitis (UC), including its clinical phenotypes. A total of 121 patients with UC and 500 healthy control (HC) subjects participated in the study. To assess the polymorphisms at the 1,267 position of the HSP70-2 gene, restriction fragment length polymorphism analysis was performed. The subjects in the study were classified by disease behavior, severity and extent of disease. Although no significant difference of the HSP70-2 genotype distribution was identified between the HC and UC groups, the BB genotype exhibited a lower risk of the steroid-dependent phenotype [odds ratio (OR), 0.12; 95% confidence interval (CI), 0.02-0.95; P=0.02]. The same genotype was also associated with a lower risk of the refractory phenotype (OR, 0.16; 95% CI, 0.04-0.73; P=0.01). There was no direct correlation between the polymorphism of the HSP70-2 gene and UC susceptibility. However, there was an association between a reduced risk of the steroid-dependent and refractory phenotypes of UC and the BB genotype.
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Affiliation(s)
- Tomomitsu Tahara
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomoyuki Shibata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masaaki Okubo
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Takamitsu Ishizuka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomohiko Kawamura
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Hiromi Yamashita
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Masakatsu Nakamura
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa-ken 920-0292, Japan
| | - Yoshihito Nakagawa
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Mitsuo Nagasaka
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Tomiyasu Arisawa
- Department of Gastroenterology, Kanzawa Medical University, Uchinada-machi, Ishikawa-ken 920-0292, Japan
| | - Naoki Ohmiya
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | - Ichiro Hirata
- Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
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Kostoff RN. Literature-related discovery: common factors for Parkinson’s Disease and Crohn’s Disease. Scientometrics 2014. [DOI: 10.1007/s11192-014-1298-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Rustemoglu A, Gumus-Akay G, Karakus N, Yigit S, Sahin S, Tasliyurt T. Association analysis of three ABCB1 (MDR1) gene variants (C1236T, G2677A/T and C3435T) and their genotype/haplotype combinations with the familial Mediterranean fever. Xenobiotica 2014; 44:933-40. [PMID: 24773260 DOI: 10.3109/00498254.2014.915071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
1. Familial Mediterranean fever (FMF) is considered an autosomal recessive disorder, associated with a single gene named Mediterranean fever (MEFV). The aim of this study was to perform genotyping and haplotyping analysis of the multidrug resistance (ATP-binding cassette, subfamily B, member 1 - ABCB1) gene in FMF patients. 2. Three ABCB1 gene polymorphisms (C1236T, G2677T/A and C3435T) were analyzed in 309 FMF patients and 250 healthy control subjects. All subjects were genotyped by PCR-restriction fragment length polymorphism analysis, and statistical analysis was performed using the Arlequin 3.1.1 and SPSS 16.0 software packages. 3. The CT genotype frequency of the C3435T polymorphism (p = 0.003), the CT-GT-CT (C1236T-G2677T/A-C3435T) triple genotype (p = 0.001) and the C-G (C1236T-G2677T/A) haplotype (p = 0.030) were more common in the FMF patients. The CT-GG-CC triple genotype and T-G-C, C-T-T and T-G-T haplotypes (C1236T-G2677T/A-C3435T) were higher in the control subjects (p = 0.011, 0.001, 0.009 and 0.000, respectively). The CT-GG binary genotype and C-T and T-G haplotypes for C1236T-G2677T/A polymorphisms may have a high degree of protective effect against FMF (p = 0.0005, 0.002 and 0.000, respectively). 4. Our study showed that genotypes and haplotypes of ABCB1 gene polymorphisms may affect patients' FMF susceptibility.
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Affiliation(s)
- Aydin Rustemoglu
- Department of Medical Biology, Faculty of Medicine, Gaziosmanpasa University , Tokat , Turkey
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Chimezie C, Ewing AC, Quadri SS, Cole RB, Boué SM, Omari CF, Bratton M, Glotser E, Skripnikova E, Townley I, Stratford RE. Glyceollin transport, metabolism, and effects on p-glycoprotein function in Caco-2 cells. J Med Food 2014; 17:462-71. [PMID: 24476214 PMCID: PMC3993029 DOI: 10.1089/jmf.2013.0115] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 10/24/2013] [Indexed: 12/21/2022] Open
Abstract
Glyceollins are phytoalexins produced in soybeans from their isoflavone precursor daidzein. Their impressive anticancer and glucose normalization effects in rodents have generated interest in their therapeutic potential. The aim of the present studies was to begin to understand glyceollin intestinal transport and metabolism, and their potential effects on P-glycoprotein (Pgp) in Caco-2 cells. At 10 and 25 μM, glyceollin permeability was 2.4±0.16×10(-4) cm/sec and 2.1±0.15×10(-4) cm/sec, respectively, in the absorptive direction. Basolateral to apical permeability at 25 μM was 1.6±0.10×10(-4) cm/sec. Results suggest high absorption potential of glyceollin by a passive-diffusion-dominated mechanism. A sulfate conjugate at the phenolic hydroxyl position was observed following exposure to Caco-2 cells. In contrast to verapamil inhibition of the net secretory permeability of rhodamine 123 (R123) and its enhancement of calcein AM uptake into Caco-2 cells, neither glyceollin nor genistein inhibited Pgp (MDR1; ABCB1) up to 300 μM. There was no significant change in MDR1 mRNA expression, Pgp protein expression, or R123 transport in cells exposed to glyceollin or genistein for 24 h up to 100 μM. Collectively, these results suggest that glyceollin has the potential to be well absorbed, but that, similar to the isoflavone genistein, its absorption may be reduced substantially by intestinal metabolism; further, they indicate that glyceollin does not appear to alter Pgp function in Caco-2 cells.
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Affiliation(s)
- Chukwuemezie Chimezie
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
| | - Adina C. Ewing
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
| | - Syeda S. Quadri
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana, USA
| | - Richard B. Cole
- Department of Chemistry, University of New Orleans, New Orleans, Louisiana, USA
- Laboratory of Organic and Biological Structural Chemistry, Université Pierre et Marie Curie (Paris 6), Paris, France
| | - Stephen M. Boué
- Southern Regional Research Center, U.S. Department of Agriculture, New Orleans, Louisiana, USA
| | - Christopher F. Omari
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
| | - Melyssa Bratton
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
| | - Elena Glotser
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
| | - Elena Skripnikova
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
| | - Ian Townley
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
| | - Robert E. Stratford
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, Louisiana, USA
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Wang J, Guo X, Yu S, Zhang J, Song J, Ji M, Cao Z, Wang J, Liu Y, Dong W. MDR1 C3435T polymorphism and inflammatory bowel disease risk: a meta-analysis. Mol Biol Rep 2014; 41:2679-85. [PMID: 24449364 DOI: 10.1007/s11033-014-3127-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 01/11/2014] [Indexed: 12/19/2022]
Abstract
The C3435T polymorphism of the multidrug resistance gene (MDR1) has been implicated in inflammatory bowel disease (IBD) risk, but the reported results are inconsistent. Here we performed a meta-analysis to evaluate the association between C3435T polymorphism and the risk of IBD using all case-control studies published before February 2013 according to PubMed and Web of Science. A total of 13 case-control studies, including 6,757 cases and 4,295 controls, were included. Pooled odds ratio (OR) with 95 % confidence interval (CI) was calculated using fixed- or random-effects model. Overall, no evidence has indicated that the C3435T polymorphism was associated with the susceptibility to IBD (dominant model: OR = 1.05, 95 % CI: 0.96-1.16; CT vs. CC: OR = 1.06, 95 % CI: 0.95-1.17; TT vs. CC: OR = 1.04, 95 % CI: 0.92-1.17; recessive model: OR = 0.99, 95 % CI: 0.90-1.09). Besides, stratified analysis by clinical type also indicated that no significant association between MDR1 C3435T and the risk of Crohn's disease and ulcerative colitis was observed. This meta-analysis indicated that the C3435T polymorphism of MDR1 may not confer susceptibility to IBD.
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Affiliation(s)
- Jun Wang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
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Muise A, Rotin D. Apical junction complex proteins and ulcerative colitis: a focus on thePTPRSgene. Expert Rev Mol Diagn 2014; 8:465-77. [DOI: 10.1586/14737159.8.4.465] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Carvalho ATP, Fróes RSB, Esberard BC, Santos JCVC, Rapozo DCM, Grinman AB, Simão TA, Nicolau Neto P, Luiz RR, Carneiro AJV, Souza HSPD, Ribeiro-Pinto LF. Multidrug resistance 1 gene polymorphisms may determine Crohn's disease behavior in patients from Rio de Janeiro. Clinics (Sao Paulo) 2014; 69:327-34. [PMID: 24838898 PMCID: PMC4012237 DOI: 10.6061/clinics/2014(05)06] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 09/19/2013] [Indexed: 12/18/2022] Open
Abstract
OBJECTIVES Conflicting data from studies on the potential role of multidrug resistance 1 gene polymorphisms in inflammatory bowel disease may result from the analysis of genetically and geographically distinct populations. Here, we investigated whether multidrug resistance 1 gene polymorphisms are associated with inflammatory bowel diseases in patients from Rio de Janeiro. METHODS We analyzed 123 Crohn's disease patients and 83 ulcerative colitis patients to determine the presence of the multidrug resistance 1 gene polymorphisms C1236T, G2677T and C3435T. In particular, the genotype frequencies of Crohn's disease and ulcerative colitis patients were analyzed. Genotype-phenotype associations with major clinical characteristics were established, and estimated risks were calculated for the mutations. RESULTS No significant difference was observed in the genotype frequencies of the multidrug resistance 1 G2677T/A and C3435T polymorphisms between Crohn's disease and ulcerative colitis patients. In contrast, the C1236T polymorphism was significantly more common in Crohn's disease than in ulcerative colitis (p = 0.047). A significant association was also found between the multidrug resistance 1 C3435T polymorphism and the stricturing form of Crohn's disease (OR: 4.13; p = 0.009), whereas no association was found with penetrating behavior (OR: 0.33; p = 0.094). In Crohn's disease, a positive association was also found between the C3435T polymorphism and corticosteroid resistance/refractoriness (OR: 4.14; p = 0.010). However, no significant association was found between multidrug resistance 1 gene polymorphisms and UC subphenotypic categories. CONCLUSION The multidrug resistance 1 gene polymorphism C3435T is associated with the stricturing phenotype and an inappropriate response to therapy in Crohn's disease. This association with Crohn's disease may support additional pathogenic roles for the multidrug resistance 1 gene in regulating gut-microbiota interactions and in mediating fibrosis. Understanding the effects of several drugs associated with multidrug resistance 1 gene variants may aid in the selection of customized therapeutic regimens.
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Affiliation(s)
- Ana Teresa P Carvalho
- Disciplina de Gastroenterologia e Endoscopia Digestiva, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Renata S B Fróes
- Disciplina de Gastroenterologia e Endoscopia Digestiva, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Barbara C Esberard
- Disciplina de Gastroenterologia e Endoscopia Digestiva, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Juliana C V C Santos
- Instituto Nacional de Câncer, Programa de Carcinogênese Molecular, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Davy C M Rapozo
- Instituto Nacional de Câncer, Programa de Carcinogênese Molecular, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Ana B Grinman
- Disciplina de Gastroenterologia e Endoscopia Digestiva, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Tatiana A Simão
- Laboratório de Toxicologia e Biologia Molecular, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Pedro Nicolau Neto
- Laboratório de Toxicologia e Biologia Molecular, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
| | - Ronir R Luiz
- Instituto de Epidemiologia e Saúde Coletiva, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Antonio José V Carneiro
- Departamento de Clínica Médica, Serviço de Gastroenterologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Heitor S P de Souza
- Departamento de Clínica Médica, Serviço de Gastroenterologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Luis Felipe Ribeiro-Pinto
- Laboratório de Toxicologia e Biologia Molecular, Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ, Brazil
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Wu DD, Zhang JX, Li J, Dong WG. Lack of association of the MDR1 C3435T polymorphism with susceptibility to gastric cancer and peptic ulcer: a systemic review and meta-analysis. Asian Pac J Cancer Prev 2014; 15:3021-7. [PMID: 24815441 DOI: 10.7314/apjcp.2014.15.7.3021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
BACKGROUND The multidrug resistance 1 gene (MDR1) C3435T polymorphism has been demonstrated to influence the P-glycoprotein (P-gp) activity level which is related to inflammation and carcinogenesis. This meta-analysis was performed to estimate the association between the MDR1 C3435T polymorphism and the risk of gastric cancer (GC) and peptic ulcer (PU). MATERIALS AND METHODS A literature search was conducted with PubMed, Embase and the Cochrane library up to November 2013. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of association. Data were analyzed using Review Manager (Version 5.2), and Stata package (version 12.0) for estimation of publication bias. RESULTS Six case-control studies were included, of which five were for GC and two for PU. Overall, no evidence was found for any association between the MDR1 C3435T polymorphism and the susceptibility to GC and PU. In the stratified analysis by H. pylori infection status, stage and histology classification of GC, and PU type, there was still no significant association between them. CONCLUSIONS This meta-analysis suggested that the MDR1 C3435T polymorphism is not associated with susceptibility to GC and PU. Large and well-designed studies are warranted to validate our findings.
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Affiliation(s)
- Dan-Dan Wu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China E-mail :
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Low D, Nguyen DD, Mizoguchi E. Animal models of ulcerative colitis and their application in drug research. Drug Des Devel Ther 2013; 7:1341-57. [PMID: 24250223 PMCID: PMC3829622 DOI: 10.2147/dddt.s40107] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The specific pathogenesis underlying inflammatory bowel disease is complex, and it is even more difficult to decipher the pathophysiology to explain for the similarities and differences between two of its major subtypes, Crohn's disease and ulcerative colitis (UC). Animal models are indispensable to pry into mechanistic details that will facilitate better preclinical drug/therapy design to target specific components involved in the disease pathogenesis. This review focuses on common animal models that are particularly useful for the study of UC and its therapeutic strategy. Recent reports of the latest compounds, therapeutic strategies, and approaches tested on UC animal models are also discussed.
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Affiliation(s)
- Daren Low
- Gastrointestinal Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Deanna D Nguyen
- Gastrointestinal Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Center for the Study of inflammatory Bowel Disease, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Emiko Mizoguchi
- Gastrointestinal Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
- Center for the Study of inflammatory Bowel Disease, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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Low D, Nguyen DD, Mizoguchi E. Animal models of ulcerative colitis and their application in drug research. DRUG DESIGN DEVELOPMENT AND THERAPY 2013. [PMID: 24250223 DOI: 10.2147/dddt.s40107.ecollection] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The specific pathogenesis underlying inflammatory bowel disease is complex, and it is even more difficult to decipher the pathophysiology to explain for the similarities and differences between two of its major subtypes, Crohn's disease and ulcerative colitis (UC). Animal models are indispensable to pry into mechanistic details that will facilitate better preclinical drug/therapy design to target specific components involved in the disease pathogenesis. This review focuses on common animal models that are particularly useful for the study of UC and its therapeutic strategy. Recent reports of the latest compounds, therapeutic strategies, and approaches tested on UC animal models are also discussed.
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Affiliation(s)
- Daren Low
- Gastrointestinal Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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Saksena S, Priyamvada S, Kumar A, Akhtar M, Soni V, Anbazhagan AN, Alakkam A, Alrefai WA, Dudeja PK, Gill RK. Keratinocyte growth factor-2 stimulates P-glycoprotein expression and function in intestinal epithelial cells. Am J Physiol Gastrointest Liver Physiol 2013; 304:G615-22. [PMID: 23328208 PMCID: PMC3602685 DOI: 10.1152/ajpgi.00445.2012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Intestinal P-glycoprotein (Pgp/multidrug resistance 1), encoded by the ATP-binding cassette B1 gene, is primarily involved in the transepithelial efflux of toxic metabolites and xenobiotics from the mucosa into the gut lumen. Reduced Pgp function and expression has been shown to be associated with intestinal inflammatory disorders. Keratinocyte growth factor-2 (KGF2) has emerged as a potential target for modulation of intestinal inflammation and maintenance of gut mucosal integrity. Whether KGF2 directly regulates Pgp in the human intestine is not known. Therefore, the present studies were undertaken to determine the modulation of Pgp by KGF2 using Caco-2 cells. Short-term treatment of Caco-2 cells with KGF2 (10 ng/ml, 1 h) increased Pgp activity (~2-fold, P < 0.05) as measured by verapamil-sensitive [(3)H]digoxin flux. This increase in Pgp function was associated with an increase in surface Pgp levels. The specific fibroblast growth factor receptor (FGFR) antagonist PD-161570 blocked the KGF2-mediated increase in Pgp activity. Inhibition of the mitogen-activated protein kinase (MAPK) pathway by PD-98059 attenuated the stimulatory effects of KGF2 on Pgp activity. Small-interfering RNA knockdown of Erk1/2 MAPK blocked the increase in surface Pgp levels by KGF2. Long-term treatment with KGF2 (10 ng/ml, 24 h) also significantly increased PgP activity, mRNA, protein expression, and promoter activity. The long-term effects of KGF2 on Pgp promoter activity were also blocked by the FGFR antagonist and mediated by the Erk1/2 MAPK pathway. In conclusion, our findings define the posttranslational and transcriptional mechanisms underlying stimulation of Pgp function and expression by KGF2 that may contribute to the beneficial effects of KGF2 in intestinal inflammatory disorders.
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Affiliation(s)
- Seema Saksena
- Section of Digestive Diseases and Nutrition, Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA.
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Tanner SM, Staley EM, Lorenz RG. Altered generation of induced regulatory T cells in the FVB.mdr1a-/- mouse model of colitis. Mucosal Immunol 2013; 6:309-23. [PMID: 22874899 PMCID: PMC3676969 DOI: 10.1038/mi.2012.73] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The FVB.mdr1a(-/-) mouse, lacking the small molecule pump P-glycoprotein (P-gp), is a commonly used model for the study of spontaneous T cell-mediated colitis. In addition, MDR1 polymorphisms and P-gp deficiency in humans have been linked to the development of ulcerative colitis. We now demonstrate that mice with P-gp deficiency have decreased levels of Foxp3(+) regulatory T cells (Tregs) in the intestinal lamina propria. This decrease is not due to either increased Treg apoptosis, altered Treg trafficking, or enhanced Treg plasticity to become Foxp3(+)IL-17(+) cells. Instead, P-gp deficiency appears to restrict the development of induced Treg cells (iTregs), as fewer Foxp3(+) iTregs developed from naive FVB.mdr1a(-/-) T cells both upon transforming growth factor-β (TGF-β) treatment in vitro and after adoptive transfer into FVB.rag2(-/-) recipients. Rather, in vitro TGF-β treatment results in a IL-17(+)CD4(+) T cell. This failure of iTregs to develop explains the decrease in Foxp3(+) Tregs in the FVB.mdr1a(-/-) intestine, representing a need to investigate this novel disease mechanism in human inflammatory bowel disease patients with MDR1 polymorphisms.
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Affiliation(s)
- Scott M. Tanner
- Department of Pathology at the University of Alabama at Birmingham
| | | | - Robin G. Lorenz
- Department of Pathology at the University of Alabama at Birmingham,Department of Microbiology at the University of Alabama at Birmingham
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Chiurillo MA. Can the prevalence of symptoms in patients with inflammatory bowel disease be predicted by the analysis of multidrug resistance gene 1 polymorphisms? Saudi J Gastroenterol 2013; 19:139-40. [PMID: 23828741 PMCID: PMC3745653 DOI: 10.4103/1319-3767.114502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Miguel Angel Chiurillo
- Department of Functional Sciences, Molecular Genetic Laboratory Dr. Jorge Yunis-Turbay, School of Medicine, Lisandro Alvarado Central Western University, Barquisimeto, Venezuela E-mail:
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Chen HL, Li LR. Glucocorticoid receptor gene polymorphisms and glucocorticoid resistance in inflammatory bowel disease: a meta-analysis. Dig Dis Sci 2012; 57:3065-75. [PMID: 22752665 DOI: 10.1007/s10620-012-2293-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Accepted: 06/11/2012] [Indexed: 12/24/2022]
Abstract
BACKGROUND Studies investigating the associations between glucocorticoid receptor gene polymorphisms and glucocorticoid resistance in inflammatory bowel disease report conflicting results. AIMS We conducted a meta-analysis to assess the possible association between the three most commonly investigated glucocorticoid receptor gene (ER22/23EK, N363S, and BclI) polymorphisms and glucocorticoid resistance in inflammatory bowel disease. METHODS Articles evaluating the effect of ER22/23EK, N363S, and BclI gene polymorphism on glucocorticoid resistance in inflammatory bowel disease were identified from 1950 to February 2012. After extraction of relevant data, meta-analyses were performed to assess the association between glucocorticoid receptor gene polymorphisms and glucocorticoid resistance in inflammatory bowel disease. RESULTS A total of five eligible studies with 942 cases were included. Our analysis showed that ER22/23EK polymorphisms were not associated with glucocorticoid resistance in inflammatory bowel disease [GG versus GA + AA: odds ratio (OR) = 0.58, 95 % confidence interval (CI) 0.16-2.08]. In N363S polymorphisms, AG + GG allele showed no significant effect on glucocorticoid resistance in inflammatory bowel disease compared with AA allele (OR = 1.19, 95 % CI 0.33-4.30). In BclI polymorphisms, there was also no association of CG + GG allele with glucocorticoid resistance (CC versus CG + GG: OR = 1.22, 95 % CI 0.70-2.13). For Crohn's disease (CD) and ulcerative colitis (UC), no statistically significant associations between these three single-nucleotide polymorphisms (SNPs) and glucocorticoid resistance were found. The shape of the funnel plot did not detect publication bias. CONCLUSIONS The current meta-analysis found no evidence that glucocorticoid receptor gene polymorphisms (ER22/23EK, N363S, and BclI) are associated with glucocorticoid resistance in inflammatory bowel disease treatment. However, this meta-analysis is underpowered for relatively large effect sizes in some SNPs. More well-designed cohort studies should be conducted to fully characterize such an association.
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Affiliation(s)
- Hong-Lin Chen
- Nantong University, Qixiu Road 19#, Nantong city, Jiangsu, People's Republic of China.
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Abstract
Inflammatory bowel diseases (IBD) including ulcerative colitis and Crohn's disease are chronically relapsing, immune-mediated disorders of the gastrointestinal tract. A major challenge in the treatment of IBD is the heterogenous nature of these pathologies. Both, ulcerative colitis and Crohn's disease are of multifactorial etiology and feature a complex interaction of host genetic susceptibility and environmental factors such as diet and gut microbiota. Genome-wide association studies identified disease-relevant single-nucleotide polymorphisms in approximately 100 genes, but at the same time twin studies also clearly indicated a strong environmental impact in disease development. However, attempts to link dietary factors to the risk of developing IBD, based on epidemiological observations showed controversial outcomes. Yet, emerging high-throughput technologies implying complete biological systems might allow taking nutrient-gene interactions into account for a better classification of patient subsets in the future. In this context, 2 new scientific fields, "nutrigenetics" and "nutrigenomics" have been established. "Nutrigenetics," studying the effect of genetic variations on nutrient-gene interactions and "Nutrigenomics," describing the impact of nutrition on physiology and health status on the level of gene transcription, protein expression, and metabolism. It is hoped that the integration of both research areas will promote the understanding of the complex gene-environment interaction in IBD etiology and in the long-term will lead to personalized nutrition for disease prevention and treatment. This review briefly summarizes data on the impact of nutrients on intestinal inflammation, highlights nutrient-gene interactions, and addresses the potential of applying "omic" technologies in the context of IBD.
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