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Silva GR, Ferreira LB, Gimba ERP. Expression and prognostic potential of osteopontin splice variants in malignant melanoma. Clin Transl Sci 2024; 17:e70002. [PMID: 39152618 PMCID: PMC11329566 DOI: 10.1111/cts.70002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Accepted: 07/03/2024] [Indexed: 08/19/2024] Open
Affiliation(s)
- Gabriela Ribeiro Silva
- Programa de Pós‐Graduação em Ciências Biomédicas, Fisiologia e FarmacologiaInstituto BiomédicoNiteróiBrazil
- Grupo de Hemato‐Oncologia Molecular, Coordenação de PesquisaInstituto Nacional de CâncerRio de JaneiroBrazil
| | - Luciana Bueno Ferreira
- Programa de Pós‐Graduação em Ciências Biomédicas, Fisiologia e FarmacologiaInstituto BiomédicoNiteróiBrazil
- Grupo de Hemato‐Oncologia Molecular, Coordenação de PesquisaInstituto Nacional de CâncerRio de JaneiroBrazil
- Departamento de GenéticaInstituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de JaneiroRio de JaneiroBrazil
| | - Etel Rodrigues Pereira Gimba
- Programa de Pós‐Graduação em Ciências Biomédicas, Fisiologia e FarmacologiaInstituto BiomédicoNiteróiBrazil
- Grupo de Hemato‐Oncologia Molecular, Coordenação de PesquisaInstituto Nacional de CâncerRio de JaneiroBrazil
- Departamento de Ciências da NaturezaUniversidade Federal FluminenseRio das OstrasBrazil
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Koroknai V, Szász I, Jámbor K, Balázs M. Expression pattern of osteopontin isoforms in malignant melanoma cell lines. Clin Transl Sci 2024; 17:e13694. [PMID: 38058256 PMCID: PMC10772848 DOI: 10.1111/cts.13694] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 12/08/2023] Open
Abstract
Osteopontin (OPN) is a secreted integrin-binding protein that plays a role in inflammation, cellular viability, cell adhesion and migration, cancer development, and diabetes through different mechanisms. The splice variants of OPN can play essential roles in cancer development, progression, and metastasis formation; however, limited data are available about the role of OPN isoforms in human malignant melanoma. Our goal was to define the gene expression patterns of five OPN variants (OPN4, OPN5, OPNa, OPNb, and OPNc), integrin, and CD44 receptor genes in primary and metastatic melanoma-originated cell lines (n = 19), and to explore the association of the expression patterns with clinicopathological parameters. We evaluated the invasive property of the cell lines and investigated the potential association between the invasion and gene expression of OPN isoforms. We found a significant rise in the expression of OPNc in the invasive cell lines compared to the noninvasive cells and detected significantly higher expression of the OPN splice variants in melanoma cell lines originating from more advanced stages tumors than cell lines originating from early-stage melanomas. The correlation analysis revealed that all five OPN variants positively correlated with ITGB3 and ITGA9, whereas OPN5 positively correlated with ITGB1, ITGAV, ITGA6, and CD44. OPN can activate extracellular signal-regulated kinase signaling through binding to α9β1 integrin, promoting melanoma tumor cell migration. It is possible that such associations between OPN splice variants and integrin receptors may play a role in melanoma progression. In conclusion, our findings suggest that high expression of OPNc correlates with the invasive behavior of melanoma cells.
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Affiliation(s)
- Viktoria Koroknai
- Department of Public Health and Epidemiology, Faculty of MedicineUniversity of DebrecenDebrecenHungary
- HUN‐REN‐DE Public Health Research GroupUniversity of DebrecenDebrecenHungary
| | - István Szász
- Department of Public Health and Epidemiology, Faculty of MedicineUniversity of DebrecenDebrecenHungary
- HUN‐REN‐DE Public Health Research GroupUniversity of DebrecenDebrecenHungary
| | - Krisztina Jámbor
- Department of Public Health and Epidemiology, Faculty of MedicineUniversity of DebrecenDebrecenHungary
| | - Margit Balázs
- Department of Public Health and Epidemiology, Faculty of MedicineUniversity of DebrecenDebrecenHungary
- HUN‐REN‐DE Public Health Research GroupUniversity of DebrecenDebrecenHungary
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Várvölgyi T, Janka EA, Szász I, Koroknai V, Toka-Farkas T, Szabó IL, Ványai B, Szegedi A, Emri G, Balázs M. Combining Biomarkers for the Diagnosis of Metastatic Melanoma. J Clin Med 2023; 13:174. [PMID: 38202181 PMCID: PMC10779676 DOI: 10.3390/jcm13010174] [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: 11/09/2023] [Revised: 12/12/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
The early detection of melanoma relapse can improve patient survival; thus, there is a great need for easily accessible biomarkers that facilitate the diagnosis of metastatic disease. We investigated the diagnostic effect of blood biomarkers such as lactate dehydrogenase (LDH), S100B, and osteopontin in the detection of metastases. Clinical data and peripheral blood samples of 206 melanoma patients were collected (no metastasis, N = 120; metastasis, N = 86). The discriminative power of blood biomarkers, patient demographics, and clinicopathological parameters of primary melanomas were evaluated using univariate and multivariate logistic regression models and receiver operating characteristic (ROC) analysis to determine the area under the curve (AUC). Plasma osteopontin levels showed a significant and independent effect on the probability of metastasis, similar to serum S100B levels. In addition, the location of the primary tumor on the lower extremities and the American Joint Committee on Cancer (AJCC) categories pT2b-3a, pT3b-4a, and pT4b were associated with the diagnosis of metastasis. Importantly, the combination of the three blood biomarkers and primary tumor localization and AJCC pT category yielded excellent discrimination (AUC: training set: 0.803; validation set: 0.822). In conclusion, plasma osteopontin can be classified as a melanoma biomarker; moreover, by combining clinicopathological prognostic variables, the diagnostic effect of blood biomarkers in the detection of metastatic melanoma can be improved.
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Affiliation(s)
- Tünde Várvölgyi
- Department of Dermatology, MTA Centre of Excellence, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (T.V.); (E.A.J.); (T.T.-F.); (I.L.S.); (B.V.); (A.S.); (G.E.)
| | - Eszter Anna Janka
- Department of Dermatology, MTA Centre of Excellence, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (T.V.); (E.A.J.); (T.T.-F.); (I.L.S.); (B.V.); (A.S.); (G.E.)
- HUN-REN-UD Allergology Research Group, University of Debrecen, 4032 Debrecen, Hungary
| | - István Szász
- HUN-REN-UD Public Health Research Group, University of Debrecen, 4028 Debrecen, Hungary; (I.S.); (V.K.)
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, 4028 Debrecen, Hungary
| | - Viktória Koroknai
- HUN-REN-UD Public Health Research Group, University of Debrecen, 4028 Debrecen, Hungary; (I.S.); (V.K.)
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, 4028 Debrecen, Hungary
| | - Tünde Toka-Farkas
- Department of Dermatology, MTA Centre of Excellence, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (T.V.); (E.A.J.); (T.T.-F.); (I.L.S.); (B.V.); (A.S.); (G.E.)
| | - Imre Lőrinc Szabó
- Department of Dermatology, MTA Centre of Excellence, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (T.V.); (E.A.J.); (T.T.-F.); (I.L.S.); (B.V.); (A.S.); (G.E.)
- HUN-REN-UD Allergology Research Group, University of Debrecen, 4032 Debrecen, Hungary
| | - Beatrix Ványai
- Department of Dermatology, MTA Centre of Excellence, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (T.V.); (E.A.J.); (T.T.-F.); (I.L.S.); (B.V.); (A.S.); (G.E.)
| | - Andrea Szegedi
- Department of Dermatology, MTA Centre of Excellence, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (T.V.); (E.A.J.); (T.T.-F.); (I.L.S.); (B.V.); (A.S.); (G.E.)
- HUN-REN-UD Allergology Research Group, University of Debrecen, 4032 Debrecen, Hungary
| | - Gabriella Emri
- Department of Dermatology, MTA Centre of Excellence, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (T.V.); (E.A.J.); (T.T.-F.); (I.L.S.); (B.V.); (A.S.); (G.E.)
- HUN-REN-UD Allergology Research Group, University of Debrecen, 4032 Debrecen, Hungary
| | - Margit Balázs
- HUN-REN-UD Public Health Research Group, University of Debrecen, 4028 Debrecen, Hungary; (I.S.); (V.K.)
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, 4028 Debrecen, Hungary
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Sinha SK, Mellody M, Carpio MB, Damoiseaux R, Nicholas SB. Osteopontin as a Biomarker in Chronic Kidney Disease. Biomedicines 2023; 11:1356. [PMID: 37239027 PMCID: PMC10216241 DOI: 10.3390/biomedicines11051356] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/28/2023] Open
Abstract
Osteopontin (OPN) is a ubiquitously expressed protein with a wide range of physiological functions, including roles in bone mineralization, immune regulation, and wound healing. OPN has been implicated in the pathogenesis of several forms of chronic kidney disease (CKD) where it promotes inflammation and fibrosis and regulates calcium and phosphate metabolism. OPN expression is increased in the kidneys, blood, and urine of patients with CKD, particularly in those with diabetic kidney disease and glomerulonephritis. The full-length OPN protein is cleaved by various proteases, including thrombin, matrix metalloproteinase (MMP)-3, MMP-7, cathepsin-D, and plasmin, producing N-terminal OPN (ntOPN), which may have more detrimental effects in CKD. Studies suggest that OPN may serve as a biomarker in CKD, and while more research is needed to fully evaluate and validate OPN and ntOPN as CKD biomarkers, the available evidence suggests that they are promising candidates for further investigation. Targeting OPN may be a potential treatment strategy. Several studies show that inhibition of OPN expression or activity can attenuate kidney injury and improve kidney function. In addition to its effects on kidney function, OPN has been linked to cardiovascular disease, which is a major cause of morbidity and mortality in patients with CKD.
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Affiliation(s)
- Satyesh K. Sinha
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
- Division of Endocrinology, Molecular Medicine and Metabolism, Charles R. Drew University of Science and Medicine, Los Angeles, CA 90059, USA
| | - Michael Mellody
- Department of Bioengineering, Henry Samueli School of Engineering, University of California, Los Angeles, CA 90095, USA;
| | - Maria Beatriz Carpio
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
| | - Robert Damoiseaux
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
| | - Susanne B. Nicholas
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA;
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Yu L, Liang X, Wang J, Ding G, Tang J, Xue J, He X, Ge J, Jin X, Yang Z, Li X, Yao H, Yin H, Liu W, Yin S, Sun B, Sheng J. Identification of Key Biomarkers and Candidate Molecules in Non-Small-Cell Lung Cancer by Integrated Bioinformatics Analysis. Genet Res (Camb) 2023; 2023:6782732. [PMID: 36688087 PMCID: PMC9831708 DOI: 10.1155/2023/6782732] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/04/2022] [Accepted: 11/18/2022] [Indexed: 01/05/2023] Open
Abstract
Background Non-small cell lung cancer (NSCLC) is the most prevalent malignant tumor of the lung cancer, for which the molecular mechanisms remain unknown. In this study, we identified novel biomarkers associated with the pathogenesis of NSCLC aiming to provide new diagnostic and therapeutic approaches for NSCLC by bioinformatics analysis. Methods From the Gene Expression Omnibus database, GSE118370 and GSE10072 microarray datasets were obtained. Identifying the differentially expressed genes (DEGs) between lung adenocarcinoma and normal samples was done. By using bioinformatics tools, a protein-protein interaction (PPI) network was constructed, modules were analyzed, and enrichment analyses were performed. The expression and prognostic values of 14 hub genes were validated by the GEPIA database, and the correlation between hub genes and survival in lung adenocarcinoma was assessed by UALCAN, cBioPortal, String and Cytoscape, and Timer tools. Results We found three genes (PIK3R1, SPP1, and PECAM1) that have a clear correlation with OS in the lung adenocarcinoma patient. It has been found that lung adenocarcinoma exhibits high expression of SPP1 and that this has been associated with poor prognosis, while low expression of PECAM1 and PIK3R1 is associated with poor prognosis (P < 0.05). We also found that the expression of SPP1 was associated with miR-146a-5p, while the high expression of miR-146a-5p was related to good prognosis (P < 0.05). On the contrary, the lower miR-21-5p on upstream of PIK3R1 is associated with a higher surviving rate in cancer patients (P < 0.05). Finally, we found that the immune checkpoint genes CD274(PD-L1) and PDCD1LG2(PD-1) were also related to SPP1 in lung adenocarcinoma. Conclusions The results indicated that SPP1 is a cancer promoter (oncogene), while PECAM1 and PIK3R1 are cancer suppressor genes. These genes take part in the regulation of biological activities in lung adenocarcinoma, which provides a basis for improving detection and immunotherapeutic targets for lung adenocarcinoma.
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Affiliation(s)
- Liyan Yu
- Department of Respiratory, The First Affiliated Hospital of Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Xuemei Liang
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Jianwei Wang
- Department of Radiation Oncology, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Guangxiang Ding
- Department of Radiation Oncology, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Jinhai Tang
- Department of Radiation Oncology, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Juan Xue
- Department of Radiation Oncology, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Xin He
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Jingxuan Ge
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Xianzhang Jin
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Zhiyi Yang
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Xianwei Li
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Hehuan Yao
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Hongtao Yin
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Wu Liu
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Shengchen Yin
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Bing Sun
- Department of Thoracic Surgery, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
| | - Junxiu Sheng
- Department of Radiation Oncology, First Affiliated Hospital, Dalian Medical University, Dalian 116044, China
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Jámbor K, Koroknai V, Kiss T, Szász I, Pikó P, Balázs M. Gene Expression Patterns of Osteopontin Isoforms and Integrins in Malignant Melanoma. PATHOLOGY AND ONCOLOGY RESEARCH 2022; 28:1610608. [PMID: 36091936 PMCID: PMC9448871 DOI: 10.3389/pore.2022.1610608] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/11/2022] [Indexed: 11/30/2022]
Abstract
Osteopontin (OPN) is a multifunctional glycoprotein that physiologically interacts with different types of integrins. It is considered to be a possible prognostic biomarker in certain tumor types; however, various splicing isoforms exist, which have not been investigated in melanoma. We aimed to define the relative expression pattern of five OPN isoforms and clarify the prognostic significance of the splice variants in melanoma. We also aimed to investigate the expression pattern of eight integrins in the same tumors. Gene expression analyses revealed that the relative expression of OPNa, OPNb, and OPNc is significantly higher in metastatic tumors compared to primary lesions (p < 0.01), whereas the expression of OPN4 and OPN5 was low in both. The more aggressive nodular melanomas had higher expression levels compared to the superficial spreading subtype (p ≤ 0.05). The relative expression of the eight tested integrins was low, with only the expression of ITGB3 being detectable in nodular melanoma (Medianlog2 = 1.274). A positive correlation was found between Breslow thickness and the expression of OPNc variant, whereby thicker tumors (>4 mm) had significantly higher expression (p ≤ 0.05). The Breslow thickness was negatively correlated with the expression of OPN4, and similarly with ITGA2. OPNc also exhibited significant positive correlation with the presence of metastasis. Our data show that high expression of OPNa, OPNb, and especially OPNc and low expression of OPN4 and ITGA2 are associated with an advanced stage of tumor progression and poor prognosis in melanoma.
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Affiliation(s)
- Krisztina Jámbor
- Doctoral School of Health Sciences, University of Debrecen, Debrecen, Hungary
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Viktória Koroknai
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- ELKH-DE Public Health Research Group, University of Debrecen, Debrecen, Hungary
| | - Tímea Kiss
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - István Szász
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- ELKH-DE Public Health Research Group, University of Debrecen, Debrecen, Hungary
| | - Péter Pikó
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- ELKH-DE Public Health Research Group, University of Debrecen, Debrecen, Hungary
| | - Margit Balázs
- Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- ELKH-DE Public Health Research Group, University of Debrecen, Debrecen, Hungary
- *Correspondence: Margit Balázs,
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Salamonsen LA. Menstrual Fluid Factors Mediate Endometrial Repair. FRONTIERS IN REPRODUCTIVE HEALTH 2021; 3:779979. [PMID: 36304016 PMCID: PMC9580638 DOI: 10.3389/frph.2021.779979] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
Menstruation is a process whereby the outer functionalis layer of the endometrium is shed each month in response to falling progesterone and estrogen levels in a non-conception cycle. Simultaneously with the tissue breakdown, the surface is re-epithelialized, protecting the wound from infection. Once menstruation is complete and estrogen levels start to rise, regeneration progresses throughout the proliferative phase of the cycle, to fully restore endometrial thickness. Endometrial repair is unique compared to tissue repair elsewhere in the adult, in that it is rapid, scar-free and occurs around 400 times during each modern woman's reproductive life. The shedding tissue and that undergoing repair is bathed in menstrual fluid, which contains live cells, cellular debris, fragments of extracellular matrix, activated leukocytes and their products, soluble cellular components and extracellular vesicles. Proteomic and other analyses have revealed some detail of these components. Menstrual fluid, along with a number of individual proteins enhances epithelial cell migration to cover the wound. This is shown in endometrial epithelial and keratinocyte cell culture models, in an ex vivo decellularized skin model and in pig wounds in vivo. Thus, the microenvironment provided by menstrual fluid, is likely responsible for the unique rapid and scar-free repair of this remarkable tissue. Insight gained from analysis of this fluid is likely to be of value not only for treating endometrial bleeding problems but also in providing potential new therapies for poorly repairing wounds such as those seen in the aged and in diabetics.
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Liu Y, Chen L, Jiang D, Luan L, Huang J, Hou Y, Xu C. HER2 promotes epithelial-mesenchymal transition through regulating osteopontin in gastric cancer. Pathol Res Pract 2021; 227:153643. [PMID: 34634565 DOI: 10.1016/j.prp.2021.153643] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 09/24/2021] [Accepted: 09/30/2021] [Indexed: 01/07/2023]
Abstract
AIMS HER2 and osteopontin (OPN) are both important biomarkers in gastric cancer (GC). The relationships between them remain to be revealed. The purpose of this study is to explore the role of OPN in epithelial-mesenchymal transition (EMT) in HER2 positive GCs. METHODS Nanostring analysis was used to compare the mRNA levels of 730 cancer related genes between paired HER2 3+ and non-3+ areas in GC patients. Immunohistochemistry (IHC) staining was performed to analyze the expression levels of OPN, as well as EMT markers including E-cad, N-cad, twist and vimentin in both areas. To further verify the role of OPN in EMT, the expression levels of OPN and EMT markers, tumor invasion/migration were analyzed after down-regulating HER2 and OPN in GC cell lines MKN-45 and N-87. RESULTS Nanostring analysis identified 8 differential expression genes between HER2 3+ and non-3+ areas. Among them, the expression level of OPN was positively correlated with that of HER2. In GC specimens, OPN showed higher expression level in HER2 3+ areas where higher E-cad expression levels and lower N-cad and twist levels were also found. After knocking down OPN and HER2 by siRNA, both cell lines show decreased invasion/migration abilities, along with the down-regulation of the EMT phenotype, supporting by the decrease of E-cad, and the increase of N-cad and twist at both mRNA and protein levels. In addition, HER2 knock-down lead to a dramatic decrease of OPN expression. CONCLUSIONS These findings indicate that HER2 may promote EMT via the regulation of OPN in GCs.
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Affiliation(s)
- Yalan Liu
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Pathology, School of Basic Medical Sciences & Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lingli Chen
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Pathology, School of Basic Medical Sciences & Zhongshan Hospital, Fudan University, Shanghai, China
| | - Dongxian Jiang
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Pathology, School of Basic Medical Sciences & Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lijuan Luan
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Pathology, School of Basic Medical Sciences & Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie Huang
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Pathology, School of Basic Medical Sciences & Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yingyong Hou
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Pathology, School of Basic Medical Sciences & Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Chen Xu
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China; Department of Pathology, School of Basic Medical Sciences & Zhongshan Hospital, Fudan University, Shanghai, China.
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