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Yusuf M, Pradana YPA, Rahmawati R, Farhat F, Kusumastuti EH, Ekoputro JW. N-Cadherin Expression with Metastasis of Neck Lymph Nodes in Patients with Nasopharyngeal Carcinoma. Int J Gen Med 2023; 16:1029-1037. [PMID: 36974062 PMCID: PMC10039623 DOI: 10.2147/ijgm.s393863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
Background Lymph node (LN) metastases were one characteristic of negative progress of NPC patient despite its advanced therapeutic approaches. One mechanism for the occurrence of epithelial to mesenchymal transition (EMT)-mediated metastases is by increasing N-cadherin expression. The purpose of this research is to determine investigating N-cadherin expression against metastatic LN in NPC cases. Methods Samples were taken by unproportionate stratified random sampling. N-cadherin expression was examined using immunohistochemistry methods. N-cadherin expression was assessed visually by binocular light microscopy. We analyzed these data using Mann-Whitney U-test to examine N-cadherin expression and lymph node metastases. Results A strong expression was found in N3 group by 63.6%; 27.3% in the N2 group and 9.1% in the N1 group. In patients with NPC N0 or without lymph node metastases, N-cadherin expression is 0%. The expression of N-cadherin is indeed an indicator of the occurrence of lymph node metastases in NPC with a statistically significant analysis of p = 0.026 (p < 0.05). Conclusion There were correlations between N-cadherin expression and lymph node metastasis on NPC patients.
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Affiliation(s)
- Muhtarum Yusuf
- Department of Otorhinolaryngology, Head, and Neck Surgery, Airlangga University, Surabaya, East Java, Indonesia
- Department of Otorhinolaryngology, Head, and Neck Surgery, Dr. Soetomo General Teaching Hospital, Surabaya, East Java, Indonesia
- Correspondence: Muhtarum Yusuf, Department of Otorhinolaryngology, Head, and Neck Surgery, Airlangga University, Jl. Mayjend Prof. Dr. Moestopo No. 6-8, Surabaya, Jawa Timur, 60285, 60286, Indonesia, Tel +62 031 5501078, Email
| | - Yogi Putra Adhi Pradana
- Department of Otorhinolaryngology, Head, and Neck Surgery, Airlangga University, Surabaya, East Java, Indonesia
- Department of Otorhinolaryngology, Head, and Neck Surgery, Dr. Soetomo General Teaching Hospital, Surabaya, East Java, Indonesia
| | - Rosydiah Rahmawati
- Department of Otorhinolaryngology, Head, and Neck Surgery, Airlangga University, Surabaya, East Java, Indonesia
- Department of Otorhinolaryngology, Head, and Neck Surgery, Dr. Soetomo General Teaching Hospital, Surabaya, East Java, Indonesia
| | - Farhat Farhat
- Department of Otorhinolaryngology, Head, and Neck Surgery, Sumatera Utara University, Medan, North Sumatera, Indonesia
| | - Etty Hary Kusumastuti
- Department of Otorhinolaryngology, Head, and Neck Surgery, Dr. Soetomo General Teaching Hospital, Surabaya, East Java, Indonesia
- Department of Pathology Anatomy, Airlangga University, Surabaya, East Java, Indonesia
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Du C, Huang T, Sun D, Mo Y, Feng H, Zhou X, Xiao X, Yu N, Hou B, Huang G, Ernberg I, Zhang Z. CDH4 as a novel putative tumor suppressor gene epigenetically silenced by promoter hypermethylation in nasopharyngeal carcinoma. Cancer Lett 2011; 309:54-61. [DOI: 10.1016/j.canlet.2011.05.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 05/15/2011] [Accepted: 05/18/2011] [Indexed: 11/26/2022]
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Chiang CT, Chu WK, Chow SE, Chen JK. Overexpression of delta Np63 in a human nasopharyngeal carcinoma cell line downregulates CKIs and enhances cell proliferation. J Cell Physiol 2009; 219:117-22. [PMID: 19089994 DOI: 10.1002/jcp.21656] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
p63 belongs to a member of the tumor suppressor protein p53 family. Due to alternative promoter usage, two types of p63 proteins are produced. The DeltaNp63 isoform lacks the N-terminal transactivation domain and is thought to antagonize TAp63 and p53 in target gene regulation. DeltaNp63 has been found to be overexpressed in numerous human squamous cell carcinomas, including nasopharyngeal carcinoma (NPC). However, the role of DeltaNp63 overexpression in NPC pathogenesis has not been clear. In this study, we use a DeltaNp63 overexpressing human NPC cell line (NPC-076) to explore the possible roles of DeltaNp63 in cell proliferation and cell-cycle regulation. We found that the proliferation of NPC-076 cell is greatly suppressed when the overexpressed DeltaNp63 is silenced by specific DeltaNp63 siRNA. Further studies show that DeltaNp63 silencing results in the upregulation of CKIs, including p27(kip1) and p57(kip2) in both mRNA and protein levels. Cell-cycle analysis shows that DeltaNp63 silencing also results in an increased G1 phase cell and apoptotic cell population. Our findings indicate that DeltaNp63 plays important roles in the regulation of NPC-076 cell-cycle progression, and may play a role in the maintenance of NPC-076 tumor cell phenotype.
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Affiliation(s)
- Chi-Tai Chiang
- Department of Physiology, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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Wu JC, Tsai RY, Chung TH. Role of catenins in the development of gap junctions in rat cardiomyocytes. J Cell Biochem 2003; 88:823-35. [PMID: 12577316 DOI: 10.1002/jcb.10390] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Gap junctions are intercellular communicating channels responsible for the synchronized activity of cardiomyocytes. Recent studies have shown that the membrane-associated guanylate kinase protein, zonula occludens-1 (ZO-1) can bind to catenins in epithelial cells and act as an adapter for the transport of the connexin isotype, Cx43 during gap junction formation. The significance of catenins in the development of gap junctions and whether complexes between catenins and ZO-1 are formed in cardiomyocytes are not clear. In this study, immunofluorescence and confocal microscopy showed sequential redistribution of alpha-catenin, beta-catenin, ZO-1, and Cx43 to the plasma membrane when rat cardiomyocytes were cultured in low Ca(2+) (<5 microM) medium, then shifted to 1.8 mM Ca(2+) medium (Ca(2+) switch). Diffuse cytoplasmic staining of alpha-catenin, beta-catenin, ZO-1, and Cx43 was seen in the cytoplasm when cardiomyocytes were cultured in low Ca(2+) medium. Staining of alpha-catenin, beta-catenin, and ZO-1 was detected at the plasma membrane of cell-cell contact sites 10 min after Ca(2+) switch, whereas Cx43 staining was first detected, colocalized with ZO-1 at the plasma membrane, 30 min after Ca(2+) switch. Distinct junctional and extensive cytoplasmic staining of alpha-catenin, beta-catenin, ZO-1, and Cx43 was seen 2 h after Ca(2+) switch. Immunoprecipitation of Triton X-100 cardiomyocyte extracts using anti-beta-catenin antibodies showed that beta-catenin was associated with alpha-catenin, ZO-1, and Cx43 at 2 h after Ca(2+) switch. Intracellular application of antisera against alpha-catenin, beta-catenin, or ZO-1 by electroporation of cardiomyocytes cultured in low Ca(2+) medium inhibited the redistribution of Cx43 to the plasma membrane following Ca(2+) switch. These results suggest the formation of a catenin-ZO-1-Cx43 complex in rat cardiomyocytes and that binding of catenins to ZO-1 is required for Cx43 transport to the plasma membrane during the assembly of gap junctions.
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Affiliation(s)
- Jiahn-Chun Wu
- Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei 10018, Taiwan.
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Lou PJ, Chen WP, Lin CT, Chen HC, Wu JC. Taxol reduces cytosolic E-cadherin and ?-catenin levels in nasopharyngeal carcinoma cell line TW-039: Cross-talk between the microtubule- and actin-based cytoskeletons. J Cell Biochem 2000. [DOI: 10.1002/1097-4644(20001215)79:4<542::aid-jcb30>3.0.co;2-q] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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