1
|
Justo BL, Jasiulionis MG. Characteristics of TIMP1, CD63, and β1-Integrin and the Functional Impact of Their Interaction in Cancer. Int J Mol Sci 2021; 22:9319. [PMID: 34502227 PMCID: PMC8431149 DOI: 10.3390/ijms22179319] [Citation(s) in RCA: 27] [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] [Received: 07/02/2021] [Revised: 08/10/2021] [Accepted: 08/13/2021] [Indexed: 01/03/2023] Open
Abstract
Tissue Inhibitor of Metalloproteases 1, also known as TIMP-1, is named for its well-established function of inhibiting the proteolytic activity of matrix metalloproteases. Given this function, many studies were carried out to verify if TIMP-1 was able to interrupt processes such as tumor cell invasion and metastasis. In contrast, many studies have shown that TIMP-1 expression is increased in several types of tumors, and this increase was correlated with a poor prognosis and lower survival in cancer patients. Later, it was shown that TIMP-1 is also able to modulate cell behavior through the induction of signaling pathways involved in cell growth, proliferation, and survival. The mechanisms involved in the regulation of the pleiotropic functions of TIMP-1 are still poorly understood. Thus, this review aimed to present literature data that show its ability to form a membrane complex with CD63 and β1-integrin, and point to N-glycosylation as a potential regulatory mechanism of the functions exerted by TIMP-1. This article reviewed the characteristics and functions performed individually by TIMP1, CD63, and β1-integrin, the roles of the TIMP-1/CD63/β1-integrin complex, both in a physiological context and in cancer, and the regulatory mechanisms involved in its assembly.
Collapse
Affiliation(s)
| | - Miriam Galvonas Jasiulionis
- Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Pedro de Toledo 669, 5 Floor, São Paulo 04039-032, Brazil;
| |
Collapse
|
2
|
β1,6 GlcNAc branches-modified protein tyrosine phosphatase Mu attenuates its tyrosine phosphatase activity and promotes glioma cell migration through PLCγ-PKC pathways. Biochem Biophys Res Commun 2018; 505:569-577. [PMID: 30274773 DOI: 10.1016/j.bbrc.2018.09.150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 09/22/2018] [Indexed: 02/05/2023]
Abstract
The metastatic potential of malignant tumor has been shown to be correlated with the increased expression of tri- and tetra-antennary β1,6-N-acetylglucosamine (β1,6-GlcNAc) N-glycans. In this study, We found that GnT-V expression was negatively correlated with receptor protein tyrosine phosphatase type μ(RPTPμ) in human glioma tissues. To study whether RPTPμ is a novel substance of GnT-V which further affect RPTPμ's downstream dephosphorylation function, we preform lentiviral infection with GnT-V gene to construct stably transfected GnT-V glial cell lines. We found RPTPμ undergone severer cleavage in GnT-V transfected glioma cells compare to Mock cells. RPTPμ intracellular domain fragments increased while β1,6-GlcNAc-branched N-glycans increased, in consistent with the decrease of RPTPμ's catalytic activity. The results showed that abnormal glycosylation could decrease the phosphorylation activity of PTP μ, and affect PLCγ-PKC pathways. Both protease inhibitor Furin and N-glycan biosynthesis inhibitor swainsonine could decrease cell mobility in GnT-V-U87 transfectants and other glioma cell lines. All results above suggest increased post-translational modification of RPTPμ N-glycans by GnT-V attenuates its tyrosine phosphatase activity and promotes glioma cell migration through PLCγ-PKC pathways, and that the β1,6-GlcNAc-branched N-glycans of RPTPμ play a crucial role in glioma invasivity.
Collapse
|
3
|
Sumardika IW, Youyi C, Kondo E, Inoue Y, Ruma IMW, Murata H, Kinoshita R, Yamamoto KI, Tomida S, Shien K, Sato H, Yamauchi A, Futami J, Putranto EW, Hibino T, Toyooka S, Nishibori M, Sakaguchi M. β-1,3-Galactosyl- O-Glycosyl-Glycoprotein β-1,6- N-Acetylglucosaminyltransferase 3 Increases MCAM Stability, Which Enhances S100A8/A9-Mediated Cancer Motility. Oncol Res 2017; 26:431-444. [PMID: 28923134 PMCID: PMC7844831 DOI: 10.3727/096504017x15031557924123] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We previously identified novel S100A8/A9 receptors, extracellular matrix metalloproteinase inducer (EMMPRIN), melanoma cell adhesion molecule (MCAM), activated leukocyte cell adhesion molecule (ALCAM), and neuroplastin (NPTN) β, that are critically involved in S100A8/A9-mediated cancer metastasis and inflammation when expressed at high levels. However, little is known about the presence of any cancer-specific mechanism(s) that modifies these receptors, further inducing upregulation at protein levels without any transcriptional regulation. Expression levels of glycosyltransferase-encoding genes were examined by a PCR-based profiling array followed by confirmation with quantitative real-time PCR. Cell migration and invasion were assessed using a Boyden chamber. Western blotting was used to examine the protein level, and the RNA level was examined by Northern blotting. Immunohistochemistry was used to examine the expression pattern of β-1,3-galactosyl-O-glycosyl-glycoprotein β-1,6-N-acetylglucosaminyltransferase 3 (GCNT3) and MCAM in melanoma tissue. We found that GCNT3 is overexpressed in highly metastatic melanomas. Silencing and functional inhibition of GCNT3 greatly suppressed migration and invasion of melanoma cells, resulting in the loss of S100A8/A9 responsiveness. Among the novel S100A8/A9 receptors, GCNT3 favorably glycosylates the MCAM receptor, extending its half-life and leading to further elevation of S100A8/A9-mediated cellular motility in melanoma cells. GCNT3 expression is positively correlated to MCAM expression in patients with high-grade melanomas. Collectively, our results showed that GCNT3 is an upstream regulator of MCAM protein and indicate the possibility of a potential molecular target in melanoma therapeutics through abrogation of the S100A8/A9-MCAM axis.
Collapse
Affiliation(s)
- I Wayan Sumardika
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Chen Youyi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Eisaku Kondo
- Division of Molecular and Cellular Pathology, Niigata University Graduate School of Medical and Dental SciencesNiigataJapan
| | - Yusuke Inoue
- Faculty of Science and Technology, Division of Molecular Science, Gunma UniversityGunmaJapan
| | - I Made Winarsa Ruma
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Hitoshi Murata
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Rie Kinoshita
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Ken-Ichi Yamamoto
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Shuta Tomida
- Department of Biobank, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Kazuhiko Shien
- Departments of Thoracic, Breast and Endocrinological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Hiroki Sato
- Departments of Thoracic, Breast and Endocrinological Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Akira Yamauchi
- Department of Biochemistry, Kawasaki Medical SchoolOkayamaJapan
| | - Junichiro Futami
- Department of Medical and Bioengineering Science, Okayama University Graduate School of Natural Science and TechnologyOkayamaJapan
| | - Endy Widya Putranto
- Department of Pediatrics, Dr. Sardjito Hospital/Faculty of Medicine, Universitas Gadjah MadaYogyakartaIndonesia
| | | | - Shinichi Toyooka
- Department of Biobank, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Masahiro Nishibori
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayamaJapan
| |
Collapse
|
4
|
Stathmin decreases cholangiocarcinoma cell line sensitivity to staurosporine-triggered apoptosis via the induction of ERK and Akt signaling. Oncotarget 2017; 8:15775-15788. [PMID: 28178656 PMCID: PMC5362522 DOI: 10.18632/oncotarget.15005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 01/03/2017] [Indexed: 01/03/2023] Open
Abstract
Cholangiocarcinoma is a rare, but highly fatal malignancy. However, the intrinsic mechanism involved in its tumorigenesis remains obscure. An urgent need remains for a promising target for cholangiocarcinoma biological therapies. Based on comparative proteomical technologies, we found 253 and 231 different spots in gallbladder tumor cell lines and cholangiocarcinoma cell lines, respectively, relative to non-malignant cells. Using Mass Spectrometry (MS) and database searching, we chose seven differentially expressed proteins. High Stathmin expression was found in both cholangiocarcinoma and gallbladder carcinoma cells. Stathmin expression was validated using immunohistochemistry and western blot in cholangiocarcinoma tissue samples and peritumoral tissue. It was further revealed that high Stathmin expression was associated with the repression of staurosporine-induced apoptosis in the cholangiocarcinoma cell. Moreover, we found that Stathmin promoted cancer cell proliferation and inhibited its apoptosis through protein kinase B (Akt) and extracellular signal-regulated kinase (ERK) signaling. Integrin, β1 appears to serve as a partner of Stathmin induction of ERK and Akt signaling by inhibiting apoptosis in the cholangiocarcinoma cell. Understanding the regulation of anti-apoptosis effect by Stathmin might provide new insight into how to overcome therapeutic resistance in cholangiocarcinoma.
Collapse
|
5
|
β1,6 GlcNAc branches-modified protein tyrosine phosphatase alpha enhances its stability and promotes focal adhesion formation in MCF-7 cells. Biochem Biophys Res Commun 2017; 482:1455-1461. [DOI: 10.1016/j.bbrc.2016.12.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 12/08/2016] [Indexed: 11/19/2022]
|
6
|
Chen C, Li R, Ross RS, Manso AM. Integrins and integrin-related proteins in cardiac fibrosis. J Mol Cell Cardiol 2015; 93:162-74. [PMID: 26562414 DOI: 10.1016/j.yjmcc.2015.11.010] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/07/2015] [Accepted: 11/07/2015] [Indexed: 12/21/2022]
Abstract
Cardiac fibrosis is one of the major components of the healing mechanism following any injury of the heart and as such may contribute to both systolic and diastolic dysfunction in a range of pathophysiologic conditions. Canonically, it can occur as part of the remodeling process that occurs following myocardial infarction or that follows as a response to pressure overload. Integrins are cell surface receptors which act in both cellular adhesion and signaling. Most importantly, in the context of the continuously contracting myocardium, they are recognized as mechanotransducers. They have been implicated in the development of fibrosis in several organs, including the heart. This review will focus on the involvement of integrins and integrin-related proteins, in cardiac fibrosis, outlining the roles of these proteins in the fibrotic responses in specific cardiac pathologies, discuss some of the common end effectors (angiotensin II, transforming growth factor beta 1 and mechanical stress) through which integrins function and finally discuss how manipulation of this set of proteins may lead to new treatments which could prove useful to alter the deleterious effects of cardiac fibrosis.
Collapse
Affiliation(s)
- Chao Chen
- Department of Medicine, Cardiology, UCSD School of Medicine, La Jolla, CA 92093-0613, USA; Veterans Administration San Diego Healthcare System, San Diego, CA 92161, USA.
| | - Ruixia Li
- Department of Medicine, Cardiology, UCSD School of Medicine, La Jolla, CA 92093-0613, USA; Veterans Administration San Diego Healthcare System, San Diego, CA 92161, USA.
| | - Robert S Ross
- Department of Medicine, Cardiology, UCSD School of Medicine, La Jolla, CA 92093-0613, USA; Veterans Administration San Diego Healthcare System, San Diego, CA 92161, USA.
| | - Ana Maria Manso
- Department of Medicine, Cardiology, UCSD School of Medicine, La Jolla, CA 92093-0613, USA; Veterans Administration San Diego Healthcare System, San Diego, CA 92161, USA.
| |
Collapse
|
7
|
Abstract
PURPOSE OF REVIEW In this review of the literature from 2014 through mid-2015, we examine new data that shed light on how macrophages and other innate immune cells and signals contribute to inflammation, vascular dysfunction, and fibrosis in scleroderma. RECENT FINDINGS Recent human studies have focused on changes early in scleroderma, and linked macrophages to inflammation in skin and progression of lung disease. Plasmacytoid dendritic cells have been implicated in vascular dysfunction. In mice, several factors have been identified that influence macrophage activation and experimental fibrosis. However, emerging data also suggest that myeloid cells can have differential effects in fibrosis. Sustained signaling through different toll-like receptors can lead to inflammation or fibrosis, and these signals can influence both immune and nonimmune cells. SUMMARY There are many types of innate immune cells that can potentially contribute to scleroderma and will be worth exploring in detail. Experimentally dissecting the roles of macrophages based on ontogeny and activation state, and the innate signaling pathways in the tissue microenvironment, may also lead to better understanding of scleroderma pathogenesis.
Collapse
Affiliation(s)
- Jennifer J Chia
- aWeill Cornell/Rockefeller/Sloan-Kettering Tri-Institutional MD-PhD Program bImmunology and Microbial Pathogenesis Program, Weill Cornell Graduate School of Medical Sciences cAutoimmunity and Inflammation Program dAutoimmunity and Inflammation Program and Department of Pediatric Rheumatology, Hospital for Special Surgery eDepartment of Microbiology and Immunology, Weill Cornell Medical College, New York, USA
| | | |
Collapse
|
8
|
Glavey SV, Huynh D, Reagan MR, Manier S, Moschetta M, Kawano Y, Roccaro AM, Ghobrial IM, Joshi L, O'Dwyer ME. The cancer glycome: carbohydrates as mediators of metastasis. Blood Rev 2015; 29:269-79. [PMID: 25636501 DOI: 10.1016/j.blre.2015.01.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 01/06/2015] [Accepted: 01/16/2015] [Indexed: 12/30/2022]
Abstract
Glycosylation is a frequent post-translational modification which results in the addition of carbohydrate determinants, "glycans", to cell surface proteins and lipids. These glycan structures form the "glycome" and play an integral role in cell-cell and cell-matrix interactions through modulation of adhesion and cell trafficking. Glycosylation is increasingly recognized as a modulator of the malignant phenotype of cancer cells, where the interaction between cells and the tumor micro-environment is altered to facilitate processes such as drug resistance and metastasis. Changes in glycosylation of cell surface adhesion molecules such as selectin ligands, integrins and mucins have been implicated in the pathogenesis of several solid and hematological malignancies, often with prognostic implications. In this review we focus on the functional significance of alterations in cancer cell glycosylation, in terms of cell adhesion, trafficking and the metastatic cascade and provide insights into the prognostic and therapeutic implications of recent findings in this fast-evolving niche.
Collapse
Affiliation(s)
- Siobhan V Glavey
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA; Glycoscience Research Group, National University of Ireland, Galway, Ireland.
| | - Daisy Huynh
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Michaela R Reagan
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Salomon Manier
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Michele Moschetta
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Yawara Kawano
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Aldo M Roccaro
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Irene M Ghobrial
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA.
| | - Lokesh Joshi
- Glycoscience Research Group, National University of Ireland, Galway, Ireland.
| | - Michael E O'Dwyer
- Glycoscience Research Group, National University of Ireland, Galway, Ireland; Department of Hematology National University of Ireland, Galway and Galway University Hospital, Ireland.
| |
Collapse
|
9
|
Nunes JB, Peixoto J, Soares P, Maximo V, Carvalho S, Pinho SS, Vieira AF, Paredes J, Rego AC, Ferreira IL, Gomez-Lazaro M, Sobrinho-Simoes M, Singh KK, Lima J. OXPHOS dysfunction regulates integrin- 1 modifications and enhances cell motility and migration. Hum Mol Genet 2014; 24:1977-90. [DOI: 10.1093/hmg/ddu612] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
10
|
Li N, Xu H, Fan K, Liu X, Qi J, Zhao C, Yin P, Wang L, Li Z, Zha X. Altered β1,6-GlcNAc branched N-glycans impair TGF-β-mediated epithelial-to-mesenchymal transition through Smad signalling pathway in human lung cancer. J Cell Mol Med 2014; 18:1975-91. [PMID: 24913443 PMCID: PMC4244013 DOI: 10.1111/jcmm.12331] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 04/15/2014] [Indexed: 12/21/2022] Open
Abstract
The change of oligosaccharide structure has been revealed to be crucial for glycoproteins' biological functions and cell biological characteristics. N-acetylglucosaminy transferase V (GnT-V), a key enzyme catalysing the reaction of adding β1, 6-N-acetylglucosamine (GlcNAc) on asparagine-linked oligosaccharides of cell proteins, has been implicated to a metastastic-promoting oncoprotein in some carcinomas. However, this correlation might not be subjected to all types of cancers, for example, in non-small cell lung cancers, low level of GnT-V expression is associated with relatively short survival time and poor prognosis. To explain the role of GnT-V in lung cancer progression, we studied the association of GnT-V expression with lung cancer EMT behaviour. We found that GnT-V expression was correlated with epithelial marker positively and mesenchymal marker negatively. GnT-V levels, as well as β1,6-GlcNAc branched N-glycans, were strongly reduced in TGF-β1-induced EMT of human lung adenocarcinoma A549 cells. Further studies showed that suppression of β1,6-GlcNAc branched N-glycans by inhibitor or GnT-V silencing in A549 cells could promote TGF-β1-induced EMT-like changes, cell migration and invasion. Meanwhile, overexpression of GnT-V impaired TGF-β1-induced EMT, migration and invasion. It suggests that GnT-V suppresses the EMT process of lung cancer cells through inhibiting the TGF-β/Smad signalling and its downstream transcription factors in a GnT-V catalytic activity–dependent manner. Taken together, the present study reveals a novel mechanism of GnT-V as a suppressor of both EMT and invasion in human lung cancer cells, which may be useful for fully understanding N-glycan's biological roles in lung cancer progression.
Collapse
Affiliation(s)
- Na Li
- Department of Biochemistry and Molecular Biology, Shanghai Medical College, Fudan University, Shanghai, China; Key Laboratory of Glycoconjugate Research, Ministry of Health, Shanghai, China; Key Laboratory of Molecular Medicine, Ministry of Education, Shanghai, China; Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Qi J, Li N, Fan K, Yin P, Zhao C, Li Z, Lin Y, Wang L, Zha X. β1,6 GlcNAc branches-modified PTPRT attenuates its activity and promotes cell migration by STAT3 pathway. PLoS One 2014; 9:e98052. [PMID: 24846175 PMCID: PMC4028250 DOI: 10.1371/journal.pone.0098052] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 04/28/2014] [Indexed: 11/19/2022] Open
Abstract
Receptor-like protein tyrosine phosphatases (RPTPs) are type I transmembrane glycoproteins with N-glycans whose catalytic activities are regulated by dimerization. However, the intrinsic mechanism involved in dimerizing processes remains obscure. In this study, receptor protein tyrosine phosphatase rho (PTPRT) is identified as a novel substrate of N-Acetylglucosaminyltransferase V (GnT-V). We show that addition of β1,6 GlcNAc branches on PTPRT prolongs PTPRT's cell-surface retention time. GnT-V overexpression enhances galectin-3's cell-surface retention and promotes PTPRT's dimerization mediated by galectin-3. Increased dimerization subsequently reduces PTPRT's catalytic activity on the dephosphorylation of signal transducer and activator of transcription 3 (STAT3) at tyrosine residue 705 (pY705 STAT3), then the accumulated pY705 STAT3 translocates into the nucleus. Collectively, these findings provide an insight into the molecular mechanism by which GnT-V promotes cell migration, suggesting that accumulation of β1,6 GlcNAc branched N-glycans promotes PTPRT's dimerization and decreases its catalytic activity, resulting in enhanced cell migratory capacity.
Collapse
Affiliation(s)
- Jingjing Qi
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Department of Immunology and Microbiology, Shanghai JiaoTong University School of Medicine, Shanghai Institute of Immunology, Shanghai, China
| | - Na Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Kun Fan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Peng Yin
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Chao Zhao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Zengxia Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Key Laboratory of Glycoconjugate Research, Ministry of Health, Shanghai, China
- Key Laboratory of Molecular Medicine, Ministry of Education, Shanghai, China
| | - Yi Lin
- Department of Pediatrics, Affiliated Hospital of Medical College, Qingdao University, Qingdao, Shandong Province, China
| | - Liying Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Key Laboratory of Glycoconjugate Research, Ministry of Health, Shanghai, China
- Key Laboratory of Molecular Medicine, Ministry of Education, Shanghai, China
- * E-mail: (LW); (XZ)
| | - Xiliang Zha
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
- Key Laboratory of Glycoconjugate Research, Ministry of Health, Shanghai, China
- Key Laboratory of Molecular Medicine, Ministry of Education, Shanghai, China
- * E-mail: (LW); (XZ)
| |
Collapse
|
12
|
Glycosylation of the laminin receptor (α3β1) regulates its association with tetraspanin CD151: Impact on cell spreading, motility, degradation and invasion of basement membrane by tumor cells. Exp Cell Res 2014; 322:249-64. [PMID: 24530578 DOI: 10.1016/j.yexcr.2014.02.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 01/31/2014] [Accepted: 02/03/2014] [Indexed: 11/27/2022]
Abstract
Invasion is the key requirement for cancer metastasis. Expression of β1,6 branched N-oligosaccharides associated with invasiveness, has been shown to promote adhesion to most Extra Cellular Matrix (ECM) and basement membrane (BM) components and haptotactic motility on ECM (fibronectin) but attenuate it on BM (laminin/matrigel) components. To explore the mechanism and to evaluate the significance of these observations in terms of invasion, highly invasive B16BL6 cells were compared with the parent (B16F10) cells or B16BL6 cells in which glycosylation was inhibited. We demonstrate that increased adhesion to matrix components induced secretion of MMP-9, important for invasion. Further, both the subunits of integrin receptors for fibronectin (α5β1) and laminin (α3β1) on B16BL6 cells were shown to carry these oligosaccharides. Although, glycosylation of receptors had no effect on their surface expression, it had same differential effect on cell spreading as haptotactic motility. Absence of correlation between invasiveness and expression of most tetraspanins (major regulators of integrin function) hints at an alternate mechanism. Here we show that glycosylation on α3β1 impedes its association with CD151 and modulates spreading and motility of cells apparently to reach an optimum required for invasion of BM. These studies demonstrate the complex mechanisms used by cancer cells to be invasive.
Collapse
|
13
|
Lesniak D, Sabri S, Xu Y, Graham K, Bhatnagar P, Suresh M, Abdulkarim B. Spontaneous epithelial-mesenchymal transition and resistance to HER-2-targeted therapies in HER-2-positive luminal breast cancer. PLoS One 2013; 8:e71987. [PMID: 23991019 PMCID: PMC3753362 DOI: 10.1371/journal.pone.0071987] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 07/05/2013] [Indexed: 01/05/2023] Open
Abstract
Resistance to trastuzumab, a rationally designed HER-2-targeting antibody, remains a major hurdle in the management of HER-2-positive breast cancer. Preclinical studies suggest the mechanisms of trastuzumab resistance are numerous. Unfortunately, the majority of these studies are based around HER-2-positive (HER-2+) luminal cell lines. The role of epithelial to mesenchymal transition (EMT), a genetic program that confers a basal phenotype, may represent a novel mechanism of escape for HER-2+ luminal cells from trastuzumab treatment. Here we investigated this possibility using a model of clonal selection in HER-2+ luminal breast cancer cells. Following a random isolation and expansion of "colony clusters" from SKBR-3 cell lines, several colony clusters underwent a spontaneous EMT in-vitro. In addition to expression of conventional EMT markers, all mesenchymal colony clusters displayed a predominant CD44+/CD24- phenotype with decreased HER-2 expression and elevated levels of a β1-integrin isoform with a high degree of N-glycosylation. Treatment with a β1-integrin function-blocking antibody, AIIB2, preferentially decreased the N-glycosylated form of β1-integrin, impaired mammosphere formation and restored epithelial phenotype in mesenchymal colony clusters. Using this model we provide the first clear evidence that resistance to trastuzumab (and lapatinib) can occur spontaneously as HER-2+ cells shift from a luminal to a basal/mesenchymal phenotype following EMT. While the major determinant of trastuzumab resistance in mesenchymal colony clusters is likely the down regulation of the HER-2 protein, our evidence suggests that multiple factors may contribute, including expression of N-glycosylated β1-integrin.
Collapse
MESH Headings
- Antibodies, Monoclonal, Humanized/pharmacology
- Antineoplastic Agents/pharmacology
- Blotting, Western
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- CD24 Antigen/metabolism
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Drug Resistance, Neoplasm/drug effects
- Drug Resistance, Neoplasm/genetics
- Epithelial-Mesenchymal Transition/genetics
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic/drug effects
- Glycosylation/drug effects
- Humans
- Hyaluronan Receptors/metabolism
- Integrin beta1/genetics
- Integrin beta1/metabolism
- Lapatinib
- Molecular Targeted Therapy/methods
- Quinazolines/pharmacology
- Receptor, ErbB-2/antagonists & inhibitors
- Receptor, ErbB-2/genetics
- Receptor, ErbB-2/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Trastuzumab
Collapse
Affiliation(s)
- David Lesniak
- Department of Experimental Oncology, Cross Cancer Institute and University of Alberta, Edmonton, Alberta, Canada
| | - Siham Sabri
- Department of Radiation Oncology, Research Institute of McGill University Health Center, McGill University, Montréal, Quebec, Canada
| | - Yaoxian Xu
- Department of Radiation Oncology, Research Institute of McGill University Health Center, McGill University, Montréal, Quebec, Canada
| | - Kathryn Graham
- Department of Experimental Oncology, Cross Cancer Institute and University of Alberta, Edmonton, Alberta, Canada
| | - Pravin Bhatnagar
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Mavanur Suresh
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Bassam Abdulkarim
- Department of Radiation Oncology, Research Institute of McGill University Health Center, McGill University, Montréal, Quebec, Canada
- * E-mail:
| |
Collapse
|
14
|
Transforming growth factor beta receptor 2 (TGFBR2) changes sialylation in the microsatellite unstable (MSI) Colorectal cancer cell line HCT116. PLoS One 2013; 8:e57074. [PMID: 23468914 PMCID: PMC3584148 DOI: 10.1371/journal.pone.0057074] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Accepted: 01/17/2013] [Indexed: 01/09/2023] Open
Abstract
Aberrant glycosylation is a common feature of many malignancies including colorectal cancers (CRCs). About 15% of CRC show the microsatellite instability (MSI) phenotype that is associated with a high frequency of biallelic frameshift mutations in the A10 coding mononucleotide microsatellite of the transforming growth factor beta receptor 2 (TGFBR2) gene. If and how impaired TGFBR2 signaling in MSI CRC cells affects cell surface glycan pattern is largely unexplored. Here, we used the TGFBR2-deficient MSI colon carcinoma cell line HCT116 as a model system. Stable clones conferring doxycycline (dox)-inducible expression of a single copy wildtype TGFBR2 transgene were generated by recombinase-mediated cassette exchange (RMCE). In two independent clones, dox-inducible expression of wildtype TGFBR2 protein and reconstitution of its signaling function was shown. Metabolic labeling experiments using the tritiated sialic acid precursor N-acetyl-D-mannosamine (ManNAc) revealed a significant decline (∼30%) of its incorporation into newly synthesized sialoglycoproteins in a TGFBR2-dependent manner. In particular, we detected a significant decrease of sialylated ß1-integrin upon reconstituted TGFBR2 signaling which did not influence ß1-integrin protein turnover. Notably, TGFBR2 reconstitution did not affect the transcript levels of any of the known human sialyltransferases when examined by real-time RT- PCR analysis. These results suggest that reconstituted TGFBR2 signaling in an isogenic MSI cell line model system can modulate sialylation of cell surface proteins like ß1-integrin. Moreover, our model system will be suitable to uncover the underlying molecular mechanisms of altered MSI tumor glycobiology.
Collapse
|
15
|
Broustas CG, Zhu A, Lieberman HB. Rad9 protein contributes to prostate tumor progression by promoting cell migration and anoikis resistance. J Biol Chem 2012; 287:41324-33. [PMID: 23066031 PMCID: PMC3510830 DOI: 10.1074/jbc.m112.402784] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 10/12/2012] [Indexed: 01/05/2023] Open
Abstract
Rad9 as part of the Rad9-Hus1-Rad1 complex is known to participate in cell cycle checkpoint activation and DNA repair. However, Rad9 can act as a sequence-specific transcription factor, modulating expression of a number of genes. Importantly, Rad9 is up-regulated in prostate cancer cell lines and clinical specimens. Its expression correlates positively with advanced stage tumors and its down-regulation reduces tumor burden in mice. We show here that transient down-regulation of Rad9 by RNA interference reduces DU145 and PC3 prostate cancer cell proliferation and survival in vitro. In addition, transient or stable down-regulation of Rad9 impairs migration and invasion of the cells. Moreover, stable reduction of Rad9 renders DU145 cell growth anchorage-dependent. It also decreases expression of integrin β1 protein and sensitizes DU145 and LNCaP cells to anoikis and impairs Akt activation. On the other hand, stable expression of Mrad9, the mouse homolog, in DU145/shRNA Rad9 cells restores migration, invasion, anchorage-independent growth, integrin β1 expression, and anoikis resistance with a concomitant elevation of Akt activation. We thus demonstrate for the first time that Rad9 contributes to prostate tumorigenesis by increasing not only tumor proliferation and survival but also tumor migration and invasion, anoikis resistance, and anchorage-independent growth.
Collapse
Affiliation(s)
- Constantinos G. Broustas
- From the Center for Radiological Research, Columbia University College of Physicians and Surgeons, New York, New York 10032 and
| | - Aiping Zhu
- From the Center for Radiological Research, Columbia University College of Physicians and Surgeons, New York, New York 10032 and
| | - Howard B. Lieberman
- From the Center for Radiological Research, Columbia University College of Physicians and Surgeons, New York, New York 10032 and
- the Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, New York 10032
| |
Collapse
|
16
|
Yao W, Yu X, Fang Z, Yin P, Zhao C, Li N, Wang L, Li Z, Zha X. Profilin1 facilitates staurosporine-triggered apoptosis by stabilizing the integrin β1-actin complex in breast cancer cells. J Cell Mol Med 2012; 16:824-35. [PMID: 21692986 PMCID: PMC3822851 DOI: 10.1111/j.1582-4934.2011.01369.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Profilin1 (Pfn1) functions as a tumour suppressor against malignant phenotypes of cancer cells. A minimum level of Pfn1 is critical for the differentiation of human epithelial cells, and its lower expression correlates with the tumourigenesis of breast cancer cells and tissues. However, the molecular mechanisms underlying its anti-tumour action remain largely unknown. In this study, we found that stable expression of ectopic Pfn1 sensitized the breast cancer cell line MDA-MB-468 to apoptosis induced by staurosporine, a widely used natural apoptosis-inducing agent. Pfn1 overexpression could also up-regulate the expression of integrin α5β1, which has been shown to inhibit the transformed phenotype of cancer cells. Furthermore, the Pfn1-facilitated apoptosis induced by staurosporine was blocked in cells attached to a supplementary fibronectin substrate, which serves as a ligand of integrin α5β1. These results suggest that the insufficient fibronectin caused by the integrin α5β1 up-regulation might activate a signalling pathway leading to an increase of cellular apoptosis. Moreover, Pfn1 that primarily functions to promote local superstructure formation involving actin filaments and integrin β1 may contribute to its promotion on apoptosis. Our study indicated a previously uncharacterized role of Pfn1 in mediating staurosporine-inducing apoptosis in breast cancer cells via up-regulating integrin α5β1, and suggested a new target for breast cancer therapy.
Collapse
Affiliation(s)
- Wantong Yao
- Department of Biochemistry and Molecular Biology, Shanghai Medical College, Fudan University, Shanghai, China
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Lee KM, Ju JH, Jang K, Yang W, Yi JY, Noh DY, Shin I. CD24 regulates cell proliferation and transforming growth factor β-induced epithelial to mesenchymal transition through modulation of integrin β1 stability. Cell Signal 2012; 24:2132-42. [PMID: 22800863 DOI: 10.1016/j.cellsig.2012.07.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 06/25/2012] [Accepted: 07/09/2012] [Indexed: 12/22/2022]
Abstract
To determine the role of CD24 in breast cancer cells, we knocked down CD24 in MCF-7 human breast cancer cells by retroviral delivery of shRNA. MCF-7 cells with knocked down CD24 (MCF-7 hCD24 shRNA) exhibited decreased cell proliferation and cell adhesion as compared to control MCF-7 mCD24 shRNA cells. Decreased proliferation of MCF-7 hCD24 shRNA cells resulted from the inhibition of cell cycle progression from G1 to S phase. The specific inhibition of MEK/ERK signaling by CD24 ablation might be responsible for the inhibition of cell proliferation. Phosphorylation of Src/FAK and TGF-β1-mediated epithelial to mesenchymal transition was also down-regulated in MCF-7 hCD24 shRNA cells. Reduced Src/FAK activity was caused by a decrease in integrin β1 bound with CD24 and subsequent destabilization of integrin β1. Our results suggest that down-regulation of Raf/MEK/ERK signaling via Src/FAK may be dependent on integrin β1 function and that this mechanism is largely responsible for the CD24 ablation-induced decreases in cell proliferation and epithelial to mesenchymal transition.
Collapse
Affiliation(s)
- Kyung-min Lee
- Department of Life Science, Hanyang University, Seoul, Korea
| | | | | | | | | | | | | |
Collapse
|
18
|
Abstract
Complex carbohydrates, which are major components of the cell membrane, perform important functions in cell-cell and cell-extracellular matrix interactions, as well as in signal transduction. They comprise three kinds of biomolecules: glycoproteins, proteoglycans and glycosphingolipids. Recent studies have also shown that glycan changes in malignant cells take a variety of forms and mediate key pathophysiological events during the various stages of tumour progression. Glycosylation changes are universal hallmarks of malignant transformation and tumour progression in human cancer, which take place on the whole cells or some specific molecules. Accordingly, those changes make them prominent candidates for cancer biomarkers in the meantime. This review mainly focuses on the correlation between glycosylation and the metastasis potential of tumour cells from comprehensive aspects to further address the vital roles of glycans in oncogenesising. Moreover, utilizing these glycosylation changes to ward off tumour metastasis by means of anti-adhesion approach or devising anti-cancer vaccine is one of promising targets of future study.
Collapse
Affiliation(s)
- Min Li
- Department of General Surgery, Zhongshan Hospital, Shanghai Medical School, Fudan University, 180, Fenglin Road, Shanghai, 200032, China
| | | | | |
Collapse
|
19
|
The effect of epidermal growth factor receptor variant III on glioma cell migration by stimulating ERK phosphorylation through the focal adhesion kinase signaling pathway. Arch Biochem Biophys 2010; 502:89-95. [PMID: 20650261 DOI: 10.1016/j.abb.2010.07.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2010] [Revised: 07/11/2010] [Accepted: 07/14/2010] [Indexed: 10/19/2022]
Abstract
Epidermal growth factor receptor variant III (EGFRvIII), the most common EGFR mutation, is associated with cell migration of glioblastoma multiforme (GBM) cases; however, the mechanism has not been elucidated. In this study, we found that the EGFRvIII-promoted glioma cell migration was closely linked to high levels of tyrosine phosphorylation in focal adhesion kinase (FAK) Y397. We also demonstrated that EGFRvIII formed a complex with FAK, resulting in enhanced tyrosine phosphorylation levels of FAK Y397 and EGFR Y1068. After knockdown of FAK expression via anti-FAK shRNA, the U87ΔEGFR cell migration was significantly inhibited, accompanying with the reduced phosphorylation levels of extracellular signal-regulated kinase (ERK1/2). Furthermore, the role of ERK1/2 in FAK-regulated cell migration was confirmed. Taken together, our results suggest that FAK and its downstream molecule ERK were involved in EGFRvIII-promoted glioma cell migration in U87ΔEGFR cells.
Collapse
|
20
|
Lee M, Lee HJ, Seo WD, Park KH, Lee YS. Sialylation of integrin beta1 is involved in radiation-induced adhesion and migration in human colon cancer cells. Int J Radiat Oncol Biol Phys 2010; 76:1528-36. [PMID: 20338479 DOI: 10.1016/j.ijrobp.2009.11.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Revised: 10/06/2009] [Accepted: 11/02/2009] [Indexed: 10/19/2022]
Abstract
PURPOSE Previously, we reported that radiation-induced ST6 Gal I gene expression was responsible for an increase of integrin beta1 sialylation. In this study, we have further investigated the function of radiation-mediated integrin beta1 sialylation in colon cancer cells. METHODS AND MATERIALS We performed Western blotting and lectin affinity assay to analyze the expression and level of sialylated integrin beta1. After exposure to ionizing radiation (IR), adhesion and migration of cells were measured by in vitro adhesion and migration assay. RESULTS IR increased sialylation of integrin beta1 responsible for its increased protein stability and adhesion and migration of colon cancer cells. However, for cells with an N-glycosylation site mutant of integrin beta1 located on the I-like domain (Mu3), these effects were dramatically inhibited. In addition, integrin beta1-mediated radioresistance was not observed in cells containing this mutant. When sialylation of integrin beta1 was targeted with a sulfonamide chalcone compound, inhibition of radiation-induced sialylation of integrin beta1 and inhibition of radiation-induced adhesion and migration occurred. CONCLUSION The increase of integrin beta1 sialylation by ST6 Gal I is critically involved in radiation-mediated adhesion and migration of colon cancer cells. From these findings, integrin beta1 sialylation may be a novel target for overcoming radiation-induced survival, especially radiation-induced adhesion and migration.
Collapse
Affiliation(s)
- Minyoung Lee
- Division of Radiation Effects, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | | | | | | | | |
Collapse
|
21
|
Janik ME, Lityńska A, Vereecken P. Cell migration-the role of integrin glycosylation. Biochim Biophys Acta Gen Subj 2010; 1800:545-55. [PMID: 20332015 DOI: 10.1016/j.bbagen.2010.03.013] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Revised: 03/11/2010] [Accepted: 03/17/2010] [Indexed: 12/25/2022]
Abstract
BACKGROUND Cell migration is an essential process in organ homeostasis, in inflammation, and also in metastasis, the main cause of death from cancer. The extracellular matrix (ECM) serves as the molecular scaffold for cell adhesion and migration; in the first phase of migration, adhesion of cells to the ECM is critical. Engagement of integrin receptors with ECM ligands gives rise to the formation of complex multiprotein structures which link the ECM to the cytoplasmic actin skeleton. Both ECM proteins and the adhesion receptors are glycoproteins, and it is well accepted that N-glycans modulate their conformation and activity, thereby affecting cell-ECM interactions. Likely targets for glycosylation are the integrins, whose ability to form functional dimers depends upon the presence of N-linked oligosaccharides. Cell migratory behavior may depend on the level of expression of adhesion proteins, and their N-glycosylation that affect receptor-ligand binding. SCOPE OF REVIEW The mechanism underlying the effect of integrin glycosylation on migration is still unknown, but results gained from integrins with artificial or mutated N-glycosylation sites provide evidence that integrin function can be regulated by changes in glycosylation. GENERAL SIGNIFICANCE A better understanding of the molecular mechanism of cell migration processes could lead to novel diagnostic and therapeutic approaches and applications. For this, the proteins and oligosaccharides involved in these events need to be characterized.
Collapse
Affiliation(s)
- Marcelina E Janik
- Department of Glycoconjugate Biochemistry, Institute of Zoology, Jagiellonian University, Krakow, Poland.
| | | | | |
Collapse
|
22
|
Wang C, Li Z, Yang Z, Zhao H, Yang Y, Chen K, Cai X, Wang L, Shi Y, Qiu S, Fan J, Zha X. The effect of receptor protein tyrosine phosphatase kappa on the change of cell adhesion and proliferation induced by N-acetylglucosaminyltransferase V. J Cell Biochem 2010; 109:113-23. [PMID: 19911372 DOI: 10.1002/jcb.22387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
N-acetylglucosaminyltransferase V (GnT-V) has been reported to be positively associated with tumor progression, but its mechanism still remains unknown. In the present study, we found that GnT-V overexpression not only changed the glycosylation of receptor protein tyrosine phosphatase kappa (RPTPkappa) but also decreased its protein level. Moreover, GnT-V overexpression decreased cell calcium-independent adhesion and increased the tyrosine phosphorylation level of beta-catenin, in which RPTPkappa played an important role. Since RPTPkappa has an RXKR motif, which is a favored cleavage site for furin, we used furin inhibitor to further explore the effect of RPTPkappa on the change of cell adhesion and beta-catenin signaling induced by GnT-V. Our results showed that preventing RPTPkappa cleavage rescued the above effects of GnT-V, suggesting that furin cleavage could be one of the factors for RPTPkappa to regulate cell adhesion and beta-catenin signaling in GnT-V overexpression cell lines. In addition, the increased tyrosine phosphorylation level of beta-catenin was associated with the increased nuclear level of beta-catenin and downstream signaling molecules such as c-myc and cyclin D1 that were associated with cell proliferation. Our results suggest that GnT-V could decrease human hepatoma SMMC-7721 cell adhesion and promote cell proliferation partially through RPTPkappa.
Collapse
Affiliation(s)
- Can Wang
- Department of Biochemistry and Molecular Biology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Wang C, Yang Y, Yang Z, Liu M, Li Z, Sun L, Mei C, Chen H, Chen L, Wang L, Zha X. EGF-mediated migration signaling activated by N-acetylglucosaminyltransferase-V via receptor protein tyrosine phosphatase kappa. Arch Biochem Biophys 2009; 486:64-72. [DOI: 10.1016/j.abb.2009.02.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Revised: 02/16/2009] [Accepted: 02/18/2009] [Indexed: 10/21/2022]
|
24
|
|
25
|
Zhou F, Su J, Fu L, Yang Y, Zhang L, Wang L, Zhao H, Zhang D, Li Z, Zha X. Unglycosylation at Asn-633 made extracellular domain of E-cadherin folded incorrectly and arrested in endoplasmic reticulum, then sequentially degraded by ERAD. Glycoconj J 2008; 25:727-40. [PMID: 18491227 DOI: 10.1007/s10719-008-9133-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Revised: 03/27/2008] [Accepted: 03/31/2008] [Indexed: 01/28/2023]
Abstract
The human E-cadherin is a single transmembrane domain protein involved in Ca(2+)-dependent cell-cell adhesion. In a previous study, we demonstrated that all of four potential N-glycosylation sites in E-cadherin are occupied by N-glycans in human breast carcinoma cells in vivo and the elimination of N-glycan at Asn-633 dramatically affected E-cadherin expression and made it degraded. In this study we investigated the molecular mechanism of E-cadherin, which lacks N-glycosylation at Asn-633 (M4), degradation and the role of the N-glycan at Asn-633 in E-cadherin folding. We treated cells stably expressed M4 E-cadherin with MG123, DMM, respectively. Either MG132 or DMM could efficiently block degradation of M4 E-cadherin. M4 E-cadherin was recognized as the substrate of ERAD and was retro-translocated from ER lumen to cytoplasm by p97. It was observed that the ration of M4 E-cadherin binding to calnexin was significantly increased compared with that of other variants, suggesting that it was a misfolded protein, though cytoplasmic domain of M4 E-cadherin could associate with beta-catenin. Furthermore, we found that N-glycans of M4 E-cadherin were modified in immature high mannose type, suggesting that it could not depart to Golgi apparatus. In conclusion, this study revealed that N-glycosylation at Asn-633 is essential for E-cadherin expression, folding and trafficking.
Collapse
Affiliation(s)
- Feng Zhou
- Department of Biochemistry and Molecular Biology, Shanghai Medical College, Fudan University, 138 Yi Xue Yuan Road, Shanghai, 200032, People's Republic of China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Li D, Li Y, Wu X, Li Q, Yu J, Gen J, Zhang XL. Knockdown of Mgat5 Inhibits Breast Cancer Cell Growth with Activation of CD4+ T Cells and Macrophages. THE JOURNAL OF IMMUNOLOGY 2008; 180:3158-65. [DOI: 10.4049/jimmunol.180.5.3158] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|