1
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Magara K, Takasawa A, Takasawa K, Aoyama T, Ota M, Kyuno D, Ono Y, Murakami T, Yamamoto S, Nakamori Y, Nakahashi N, Kutomi G, Takemasa I, Hasegawa T, Osanai M. Multilayered proteomics reveals that JAM-A promotes breast cancer progression via regulation of amino acid transporter LAT1. Cancer Sci 2024. [PMID: 38943512 DOI: 10.1111/cas.16259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 06/06/2024] [Accepted: 06/16/2024] [Indexed: 07/01/2024] Open
Abstract
Recent studies have shown that transmembrane-type tight junction proteins are upregulated in various cancers compared with their levels in normal tissues and are involved in cancer progression, suggesting that they are potential therapeutic targets. Here, we demonstrated the expression profile and a novel role of junctional adhesion molecule-A (JAM-A) in breast cancer. Immunohistochemistry of surgical specimens showed that JAM-A was highly expressed from carcinoma in situ lesions, as in other adenocarcinomas, with higher expression in invasive carcinomas. High expression of JAM-A contributed to malignant aspects such as lymph node metastasis and lymphatic involvement positivity. In breast cancer cells, JAM-A expression status affects malignant potentials including proliferation and migration. Multilayered proteomics revealed that JAM-A interacts with the amino acid transporter LAT1 in breast cancer cells. JAM-A regulates the expression of LAT1 and interacts with it on the whole cell membrane, leading to enhanced amino acid uptake to promote tumor growth. Double high expression of JAM-A and LAT1 predicts poor prognosis in patients with breast cancer. Of note, an antibody against an extracellular domain of JAM-A suppressed the proliferation of breast cancer cells. Our findings indicate the possibility of JAM-A-targeted therapy ideally combined with LAT1-targeted therapy as a new therapeutic strategy against breast cancer.
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Affiliation(s)
- Kazufumi Magara
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Akira Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Division of Tumor Pathology, Department of Pathology, Asahikawa Medical University, Asahikawa, Japan
| | - Kumi Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Division of Tumor Pathology, Department of Pathology, Asahikawa Medical University, Asahikawa, Japan
| | - Tomoyuki Aoyama
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Misaki Ota
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Daisuke Kyuno
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yusuke Ono
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Taro Murakami
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Soh Yamamoto
- Department of Microbiology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuna Nakamori
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Oral Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Naoya Nakahashi
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Orthopedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Goro Kutomi
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Ichiro Takemasa
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tadashi Hasegawa
- Department of Surgical Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Makoto Osanai
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
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2
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He XN, Wu P, Jiang WD, Liu Y, Kuang SY, Tang L, Ren HM, Li H, Feng L, Zhou XQ. Aflatoxin B1 exposure induced developmental toxicity and inhibited muscle development in zebrafish embryos and larvae. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:163170. [PMID: 37003331 DOI: 10.1016/j.scitotenv.2023.163170] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/02/2023] [Accepted: 03/26/2023] [Indexed: 05/13/2023]
Abstract
The prevalence of aflatoxin B1 (AFB1), one of the most toxic mycotoxins that contaminates feedstock and food is increasing worldwide. AFB1 can cause various health problems in humans and animals, as well as direct embryotoxicity. However, the direct toxicity of AFB1 on embryonic development, especially foetal foetus muscle development, has not been studied in depth. In the present study, we used zebrafish embryos as a model to study the mechanism of the direct toxicity of AFB1 to the foetus, including muscle development and developmental toxicity. Our results showed that AFB1 caused motor dysfunction in zebrafish embryos. In addition, AFB1 induces abnormalities in muscle tissue architecture, which in turn causes abnormal muscle development in larvae. Further studies found that AFB1 destroyed the antioxidant capacity and tight junction complexes (TJs), causing apoptosis in zebrafish larvae. In summary, AFB1 may induce developmental toxicity and inhibit muscle development through oxidative damage, apoptosis and disruption of TJs in zebrafish larvae. Our results revealed the direct toxicity effects of AFB1 on the development of embryos and larvae, including inhibition of muscle development and triggering neurotoxicity, induction of oxidative damage, apoptosis and disruption of TJs, and fills the gap in the toxicity mechanism of AFB1 on foetal development.
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Affiliation(s)
- Xiang-Ning He
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Provence, Sichuan 611130, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Provence, Sichuan 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Provence, Sichuan 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Hong-Mei Ren
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Hua Li
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Provence, Sichuan 611130, China.
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition, Ministry of Education, Ministry of Agriculture and Rural Affairs, Key Laboratory of Sichuan Provence, Sichuan 611130, China.
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3
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Ito Y, Takasawa A, Takasawa K, Murakami T, Akimoto T, Kyuno D, Kawata Y, Shano K, Kirisawa K, Ota M, Aoyama T, Murata M, Sugimoto K, Chiba H, Saito T, Osanai M. Aberrant expression of claudin-6 contributes to malignant potentials and drug resistance of cervical adenocarcinoma. Cancer Sci 2022; 113:1519-1530. [PMID: 35100472 PMCID: PMC8990859 DOI: 10.1111/cas.15284] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/09/2022] [Accepted: 01/24/2022] [Indexed: 11/30/2022] Open
Abstract
Recent studies have revealed that aberrant expression of tight junction (TJ) proteins is a hallmark of various solid tumors and it is recognized as a useful therapeutic target. Claudin‐6 (CLDN6), a member of the family of TJ transmembrane proteins, is an ideal therapeutic target because it is not expressed in human adult normal tissues. In this study, we found that CLDN6 is highly expressed in uterine cervical adenocarcinoma (ADC) and that high CLDN6 expression was correlated with lymph node metastasis and lymphovascular infiltration and was an independent prognostic factor. Shotgun proteome analysis revealed that cell‐cell adhesion‐related proteins and drug metabolism‐associated proteins (aldo‐keto reductase [AKR] family proteins) were significantly increased in CLDN6‐overexpressing cells. Furthermore, overexpression of CLDN6 enhanced cell‐cell adhesion properties and attenuated sensitivity to anticancer drugs including doxorubicin, daunorubicin, and cisplatin. Taken together, the results indicate that aberrant expression of CLDN6 enhances malignant potentials and drug resistance of cervical ADC, possibly due to increased cell‐cell adhesion properties and drug metabolism. Our findings provide an insight into a new therapeutic strategy, a CLDN6‐targeting therapy, against cervical ADC.
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Affiliation(s)
- Yui Ito
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Akira Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Kumi Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Taro Murakami
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Taishi Akimoto
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Daisuke Kyuno
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Yuka Kawata
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Kodai Shano
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Kurara Kirisawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Misaki Ota
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Tomoyuki Aoyama
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Masaki Murata
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Kotaro Sugimoto
- Department of Basic Pathology, Graduate School of Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Hideki Chiba
- Department of Basic Pathology, Graduate School of Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima, 960-1295, Japan
| | - Tsuyoshi Saito
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Makoto Osanai
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
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4
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Takasawa K, Takasawa A, Akimoto T, Magara K, Aoyama T, Kitajima H, Murakami T, Ono Y, Kyuno D, Suzuki H, Osanai M. Regulatory roles of claudin-1 in cell adhesion and microvilli formation. Biochem Biophys Res Commun 2021; 565:36-42. [PMID: 34090208 DOI: 10.1016/j.bbrc.2021.05.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 05/19/2021] [Indexed: 02/06/2023]
Abstract
Aberrant expression of tight junction proteins has recently been focused on in the cancer research field. We previously showed that claudin-1 is aberrantly expressed from an early stage of uterine cervical adenocarcinoma and contributes to malignant potentials. To elucidate the molecular mechanisms underlying tumor-promoting roles of claudin-1, we established and analyzed claudin-1 knockout cells. Knockout of claudin-1 suppressed conventional tight junctional functions, barrier and fence functions, and expression of cell adhesion-associated proteins including E-cadherin. Comparative proteome analysis revealed that expression of claudin-1 affected expression of a wide range of proteins, especially proteins that are associated with cell adhesion and actin cytoskeleton remodeling. Interactome analysis of the identified proteins revealed that E-cadherin and focal adhesion kinase play central roles in the claudin-1-dependently affected protein network. Moreover, knockout of claudin-1 significantly suppressed microvilli formation and activity of Ezrin/Radixin/Moesin. Taken together, the results indicate that expression of claudin-1 affects not only conventional tight junction function but also expression and activity of a wide range of proteins, especially proteins that are associated with cell adhesion and actin cytoskeleton remodeling, to contribute to malignant potentials and microvilli formation in cervical adenocarcinoma cells.
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Affiliation(s)
- Kumi Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Akira Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan.
| | - Taishi Akimoto
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Kazufumi Magara
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Tomoyuki Aoyama
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Hiroshi Kitajima
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Taro Murakami
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Yusuke Ono
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Daisuke Kyuno
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Hiromu Suzuki
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Makoto Osanai
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
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5
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Post-translational modifications of tight junction transmembrane proteins and their direct effect on barrier function. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183330. [PMID: 32376223 DOI: 10.1016/j.bbamem.2020.183330] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 04/21/2020] [Accepted: 04/27/2020] [Indexed: 12/24/2022]
Abstract
Post-translational modifications (PTMs) such as phosphorylation, ubiquitination or glycosylation are processes affecting the conformation, stability, localization and function of proteins. There is clear evidence that PTMs can act upon tight junction (TJ) proteins, thus modulating epithelial barrier function. Compared to transcriptional or translational regulation, PTMs are rapid and more dynamic processes so in the context of barrier maintenance they might be essential for coping with changing environmental or external impacts. The aim of this review is to extract literature deciphering PTMs in TJ proteins directly contributing to epithelial barrier changes in permeability to ions and macromolecules. It is not intended to cover the entire scope of PTMs in TJ proteins and should rather be understood as a digest of TJ protein modifications directly resulting in the tightening or opening of the epithelial barrier.
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6
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Kolosov D, Kelly SP. Tricellular tight junction-associated angulins in the gill epithelium of rainbow trout. Am J Physiol Regul Integr Comp Physiol 2018; 315:R312-R322. [PMID: 29631364 DOI: 10.1152/ajpregu.00431.2017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Molecular physiology of the tricellular tight junction (tTJ)-associated proteins lipolysis-stimulated lipoprotein receptor ( lsr, = angulin-1) and an immunoglobulin-like domain-containing receptor ( ildr2, ≈angulin-3) was examined in model trout gill epithelia. Transcripts encoding lsr and ildr2 are broadly expressed in trout organs. A reduction in lsr and ildr2 mRNA abundance was observed during and after confluence in flask-cultured gill cells. In contrast, as high-resistance and low-permeability characteristics developed in a model gill epithelium cultured on permeable polyethylene terephthalate membrane inserts, lsr and ildr2 transcript abundance increased. However, as epithelia entered the developmental plateau phase, lsr abundance returned to initial values, while ildr2 transcript abundance remained elevated. When mitochondrion-rich cells were introduced to model preparations, lsr mRNA abundance was unaltered and ildr2 mRNA abundance significantly increased. Transcript abundance of ildr2 was not altered in association with corticosteroid-induced tightening of the gill epithelium, while lsr mRNA abundance decreased. Transcriptional knockdown of the tTJ protein tricelluin (Tric) reduced Tric abundance, increased gill epithelium permeability, and increased lsr without significantly altering ildr2 transcript abundance. Data suggest that angulins contribute to fish gill epithelium barrier properties but that Lsr and Ildr2 seem likely to play different roles. This is because ildr2 typically exhibited increased abundance in association with decreased model permeability, while lsr abundance changed in a manner that suggested a role in Tric recruitment to the tTJ.
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Affiliation(s)
- Dennis Kolosov
- Department of Biology, York University , Toronto, Ontario , Canada
| | - Scott P Kelly
- Department of Biology, York University , Toronto, Ontario , Canada
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7
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Diao R, Mu X, Wang T, Li S. Risk score based on ten lncRNA-mRNA expression predicts the survival of stage II-III colorectal carcinoma. PLoS One 2017; 12:e0182908. [PMID: 28796819 PMCID: PMC5552098 DOI: 10.1371/journal.pone.0182908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 07/26/2017] [Indexed: 11/22/2022] Open
Abstract
The prognosis of colorectal carcinoma (CRC) is unstable in the stage II-III patients. Patients with early stage II CRC have a relative poor prognosis while other stage III CRC patients have a better prognosis. In our work, by utilizing the expression of lncRNAs and mRNAs measured by microarray (GSE39582), we constructed a risk score staging system with Cox multivariate regression model to predict the outcome of grade II-III CRC patients. Ten genes including two lncRNAs and eight mRNAs were used to estimate the survival of stage II-III CRC patients. The patients with high risk scores have poorer survival rate those with low risk scores, significantly. These results were further validated in another three independent datasets (GSE37892, GSE33113, and GSE17536). The relationship between clinical information and were evaluated, and the risk score is independent from the other clinical information and performs better in evaluating the survival of stage II-III CRC patients. Moreover, the correlation between chemotherapy was also evaluated, and we found that both patients with or without chemotherapy have a poor survival in high risk group. Gene Set Enrichment Analysis were used to find the difference between high-risk and low-risk groups, and pathways including cell adhesion and focal adhesion were significantly enriched, suggesting that the risk score reflects the status of cell-cell physical interaction. In summary, we constructed a risk staging model for grade II-III CRC, which is independent from and performs better than clinical information.
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Affiliation(s)
- Ruigang Diao
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
| | - Xiaodong Mu
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
| | - Tingting Wang
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
| | - Shuqing Li
- Yangtai Yuhuangding Hospital, Zhifu District, Yantai, Shandong Province, China
- * E-mail:
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8
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Krug SM. Contribution of the tricellular tight junction to paracellular permeability in leaky and tight epithelia. Ann N Y Acad Sci 2017; 1397:219-230. [DOI: 10.1111/nyas.13379] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Revised: 04/14/2017] [Accepted: 04/18/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Susanne M. Krug
- Institute of Clinical Physiology; Charité, Universitätsmedizin Berlin; Berlin Germany
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9
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Jennek S, Mittag S, Reiche J, Westphal JK, Seelk S, Dörfel MJ, Pfirrmann T, Friedrich K, Schütz A, Heinemann U, Huber O. Tricellulin is a target of the ubiquitin ligase Itch. Ann N Y Acad Sci 2017; 1397:157-168. [DOI: 10.1111/nyas.13349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/08/2017] [Accepted: 03/14/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Susanne Jennek
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
| | - Sonnhild Mittag
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
| | - Juliane Reiche
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
| | - Julie K. Westphal
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
| | - Stefanie Seelk
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
| | - Max J. Dörfel
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
| | - Thorsten Pfirrmann
- Institute of Physiological Chemistry, University Hospital Halle; Martin Luther University Halle-Wittenberg; Halle/Saale Germany
| | - Karlheinz Friedrich
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
| | - Anja Schütz
- Helmholtz Protein Sample Production Facility; Max-Delbrück-Center for Molecular Medicine; Berlin Germany
| | - Udo Heinemann
- Helmholtz Protein Sample Production Facility; Max-Delbrück-Center for Molecular Medicine; Berlin Germany
- Crystallography; Max Delbrück Center for Molecular Medicine; Berlin Germany
- Chemistry and Biochemistry Institute; Freie Universität Berlin; Berlin Germany
| | - Otmar Huber
- Department of Biochemistry II; Jena University Hospital, Friedrich Schiller University Jena; Jena Germany
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10
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Wang X, Wang N, Li L, Xiao R, Yuan L, Yang X, Li N. Evaluation of red and near infrared fluorescent silver nanoclusters as potential in vivo indicators of tight junction opening. RSC Adv 2017. [DOI: 10.1039/c7ra05561g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A double fluorescence probe strategy based on silver nanoclusters for study of the TJ structure change.
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Affiliation(s)
- Xinyi Wang
- College of Sciences
- Shenyang Agricultural University
- Shenyang 110161
- China
| | - Na Wang
- Department of Pharmacognosy
- School of Pharmaceutical Sciences
- Hebei Medical University
- Shijiazhuang 050017
- China
| | - Limei Li
- College of Sciences
- Shenyang Agricultural University
- Shenyang 110161
- China
| | - Ruyue Xiao
- State Key Laboratory of Natural and Biomimetic Drugs
- Department of Chemical Biology
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100083
| | - Lan Yuan
- State Key Laboratory of Natural and Biomimetic Drugs
- Department of Chemical Biology
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100083
| | - Xiaoda Yang
- State Key Laboratory of Natural and Biomimetic Drugs
- Department of Chemical Biology
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100083
| | - Na Li
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- The Key Laboratory of Bioorganic Chemistry and Molecular Engineering
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Peking University
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11
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Nuclear localization of tricellulin promotes the oncogenic property of pancreatic cancer. Sci Rep 2016; 6:33582. [PMID: 27641742 PMCID: PMC5027560 DOI: 10.1038/srep33582] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 08/31/2016] [Indexed: 12/14/2022] Open
Abstract
Accumulating evidence has shown that dysregulation of tight junctions (TJs) is involved in tumor development and progression. In this study, we investigated the expression and subcellular distribution of tricellulin, which constitutes tricellular TJs, using human pancreatic adenocarcinomas. In well-differentiated pancreatic adenocarcinoma tissues, tricellulin immunostaining was prominent in the cytoplasm and the plasma membrane. In contrast, in poorly differentiated tissues, its immunostaining was predominantly observed in the nuclei and was almost absent in the plasma membrane. The distinct immunostaining of tricellulin successfully distinguished poorly differentiated adenocarcinoma from moderately and well-differentiated adenocarcinomas with high levels of sensitivity and specificity. Nuclear tricellulin expression significantly correlated with lymph node metastasis, lymphatic invasion and poor survival. In pancreatic cancer cell lines, tricellulin localization shifted from the membrane to nucleus with decreasing differentiation status. Nuclear localization of tricellulin promoted cell proliferation and invasiveness possibly in association with MAPK and PKC pathways in pancreatic cancers. Our results provide new insights into the function of tricellulin, and its nuclear localization may become a new prognostic factor for pancreatic cancers.
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Abstract
Tricellulin is a tight-junction protein present at tricellular tight junctions. It has been suggested that basal cells are implicated in the blood-epididymis barrier. Basal cells express claudins, a component of tight junctions; however, there is no information regarding the potential architecture or regulation of basal cell-principal cell interactions. The present objectives were to determine the expression and localization of tricellulin in rat epididymis in relation to occludin, basal cell-principal cell interactions, and other junctional proteins. Tricellulin levels were similar in all segments of the adult epididymis, and the protein was localized to the apical region of the epithelium. Postnatal development showed that tricellulin levels increased with age and localization changed from cytoplasmic to membrane-bound as a function of age. Colocalization with occludin indicated that both proteins are in the region of the tight junction. In the initial segment, the proteins did not colocalize compared to the epididymis where they were both colocalized. Tricellulin did not colocalize with cytokeratin 5, a marker of basal cells, in any region of the epididymis, including the corpus and cauda epididymidis, where apical projections of basal cells were apparent. Tricellulin knockdown studies using small interfering RNA in rat caput epididymal principal cells resulted in decreased transepithelial resistance and was correlated with decreased levels of Cldn3, Cldn1, and occludin. Tight-junction protein1, also known as ZO-1, and cadherin1 levels were unchanged. This is the first report of tricellulin in the epididymis and on the interaction between tricellulin and other tight-junction proteins.
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Affiliation(s)
- Marion Mandon
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Quebec, Canada
| | - Daniel G Cyr
- INRS-Institut Armand-Frappier, Université du Québec, Laval, Quebec, Canada
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13
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Nakatsu D, Kano F, Taguchi Y, Sugawara T, Nishizono T, Nishikawa K, Oda Y, Furuse M, Murata M. JNK1/2-dependent phosphorylation of angulin-1/LSR is required for the exclusive localization of angulin-1/LSR and tricellulin at tricellular contacts in EpH4 epithelial sheet. Genes Cells 2014; 19:565-81. [PMID: 24889144 DOI: 10.1111/gtc.12158] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 03/27/2014] [Indexed: 01/16/2023]
Abstract
Tricellular tight junctions (tTJs) are specialized structural variants of tight junctions within tricellular contacts of an epithelial sheet and comprise several transmembrane proteins including lipolysis-stimulated lipoprotein receptor (angulin-1/LSR) and tricellulin. To elucidate the mechanism of its formation, we carried out stepwise screening of kinase inhibitors followed by RNAi screening to identify kinases that regulate intracellular localization of angulin-1/LSR to the tTJs using a fluorescence image-based screen. We found that the activity of JNK1 and JNK2, but not JNK3, was required for the exclusive localization of angulin-1/LSR at the tTJs. Based on a bioinformatics approach, we estimated the potential phosphorylation site of angulin-1/LSR by JNK1 to be serine 288 and experimentally confirmed that JNK1 directly phosphorylates angulin-1/LSR at this site. We found that JNK2 was also involved in the phosphorylation of angulin-1/LSR. Furthermore, GFP-tagged angulin-1/LSR(S288A), in which serine 288 was substituted by alanine, was observed to be dispersed to bicellular junctions, indicating that phosphorylation of Ser288 is crucial for the exclusive localization of angulin-1/LSR and tricellulin at tTJs. Our fluorescence image-based screening for kinases inhibitor or siRNAs combined with the phosphorylation site prediction could become a versatile and useful tool to elucidate the mechanisms underlying the maintenance of tTJs regulated by kinase networks.
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Affiliation(s)
- Daiki Nakatsu
- Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo, 153-8902, Japan
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14
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Kolosov D, Chasiotis H, Kelly SP. Tight junction protein gene expression patterns and changes in transcript abundance during development of model fish gill epithelia. ACTA ACUST UNITED AC 2014; 217:1667-81. [PMID: 24501135 DOI: 10.1242/jeb.098731] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In vertebrates, tight junction (TJ) proteins play an important role in epithelium formation and development, the maintenance of tissue integrity and regulation of TJ permeability. In this study, primary cultured model gill epithelia composed of pavement cells (PVCs) were used to examine TJ protein transcript abundance during the development of epithelium confluence and epithelium resistive properties. Differences in TJ protein expression patterns and transcript abundance between gill models composed of PVCs and models composed of PVCs and mitochondrion-rich cells (MRCs) were also examined. Marked alterations in TJ protein transcript abundance were observed as cells developed to confluence in flask-cultured model gill epithelia. In contrast, during the formation of tissue resistance in insert-cultured epithelia (i.e. epithelia cultured on a permeable substrate), changes in TJ protein mRNA abundance were conservative, despite paracellular marker flux decreasing by orders of magnitude. In both cases significant changes in claudin-8b, -8d, -27b, -28b and -32a transcript abundance were observed, suggesting that temporal alterations in the abundance of these genes are important end points of model gill epithelium integrity. When MRCs were present in cultured gill models, the mRNA abundance of several TJ proteins significantly altered and claudin-10c, -10d and -33b were only detected in preparations that included MRCs. These data provide insight into the role of select TJ proteins in the formation and development of gill epithelia and the maintenance of gill barrier properties. In addition, observations reveal a heterogeneous distribution of claudin TJ proteins in the gill epithelial cells of rainbow trout.
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Affiliation(s)
- Dennis Kolosov
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
| | - Helen Chasiotis
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
| | - Scott P Kelly
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
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15
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Kolosov D, Kelly SP. A role for tricellulin in the regulation of gill epithelium permeability. Am J Physiol Regul Integr Comp Physiol 2013; 304:R1139-48. [PMID: 23594608 DOI: 10.1152/ajpregu.00086.2013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The apical-most region of cell-to-cell contact in a vertebrate epithelium is the tight junction (TJ) complex. It is composed of bicellular TJs (bTJs) that bridge two adjacent epithelial cells and tricellular TJs (tTJs) that are points of contact between three adjoining epithelial cells. Tricellulin (TRIC) is a transmembrane TJ protein of vertebrates that is found in the tTJ complex. Full-length cDNA encoding rainbow trout TRIC was cloned and sequenced. In silico analysis of rainbow trout TRIC revealed a tetraspannin protein with several putative posttranslational modification sites. TRIC mRNA was broadly expressed in rainbow trout tissues and exhibited moderately greater abundance in the gill. In a primary cultured gill epithelium, TRIC localized to tTJs and TRIC protein abundance increased in association with corticosteroid-induced reductions in paracellular permeability. Sodium caprate was used to compromise cultured gill epithelium integrity by disrupting the tTJ complex. Sodium caprate treatment caused a reversible reduction in transepithelial resistance, caused an increase in paracellular permeability (as measured by [³H]PEG-4000 flux), and displaced TRIC from tTJs while leaving bTJs intact. Data from this study support the view that tTJs and the TJ protein TRIC 1) play a role in maintaining gill epithelium integrity and 2) contribute to the regulation of gill epithelium permeability.
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Affiliation(s)
- Dennis Kolosov
- Department of Biology, York University, Toronto, Ontario, Canada.
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