Objective To investigate the effect of mucin 1(MUC1)on the proliferation and apoptosis of nasopharyngeal carcinoma(NPC)and its regulatory mechanism.Methods The 60 NPC and paired para-cancer normal tissues were collect...Objective To investigate the effect of mucin 1(MUC1)on the proliferation and apoptosis of nasopharyngeal carcinoma(NPC)and its regulatory mechanism.Methods The 60 NPC and paired para-cancer normal tissues were collected from October 2020 to July 2021 in Quanzhou First Hospital.The expression of MUC1 was measured by real-time quantitative PCR(qPCR)in the patients with PNC.The 5-8F and HNE1 cells were transfected with siRNA control(si-control)or siRNA targeting MUC1(si-MUC1).Cell proliferation was analyzed by cell counting kit-8 and colony formation assay,and apoptosis was analyzed by flow cytometry analysis in the 5-8F and HNE1 cells.The qPCR and ELISA were executed to analyze the levels of TNF-αand IL-6.Western blot was performed to measure the expression of MUC1,NFкB and apoptosis-related proteins(Bax and Bcl-2).Results The expression of MUC1 was up-regulated in the NPC tissues,and NPC patients with the high MUC1 expression were inclined to EBV infection,growth and metastasis of NPC.Loss of MUC1 restrained malignant features,including the proliferation and apoptosis,downregulated the expression of p-IкB、p-P65 and Bcl-2 and upregulated the expression of Bax in the NPC cells.Conclusion Downregulation of MUC1 restrained biological characteristics of malignancy,including cell proliferation and apoptosis,by inactivating NF-κB signaling pathway in NPC.展开更多
Background: Fusobacterium nucleatum can cause opportunistic and chronic infections and has recently been shown to be involved in colorectal cancer. However, the specific mechanism by which F. nucleatum induces colorect...Background: Fusobacterium nucleatum can cause opportunistic and chronic infections and has recently been shown to be involved in colorectal cancer. However, the specific mechanism by which F. nucleatum induces colorectal carcinoma remains unclear. Methods: We downloaded the GSE110223, GSE110224, GSE113513 and GSE122183 microarray datasets from the Gene Expression Omnibus (GEO) database. Identification of differentially expressed genes (DEGs) related to F. nucleatum in CRC by overlapping data sets was performed. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genome pathway (KEGG) analyses were used for enrichment analysis. Moreover, Cytoscape software constructed a protein-protein interaction (PPI) network of differentially expressed genes. Finally, western blot and RT-qPCR analysis identified the relative protein and mRNA expression of hub genes in the cell model. Results: In total, 118 DEGs in F. nucleatum-associated CRC were screened from nonoverlapping microarray data, among which 20 upregulated and 98 downregulated DEGs were identified. The 118 DEGs were significantly correlated with diverse functions and pathways. The hub gene MUC1 had higher centrality scores in the PPI network, and the top 5 closely interacting hub genes, SLC7A11, AGR2, KRT18, CARTPT and TSPYL5, were identified. Conclusion: Our evidence suggests that the identified DEGs associated with F. nucleatum enhance our comprehension of the molecular Mechanisms underlying the tumorigenesis and development of CRC and might be used as molecular targets and diagnostic biomarkers for the treatment of CRC.展开更多
目的通过Meta分析探讨甲状腺癌组织中黏蛋白1(MUC1)表达的临床意义及其与各临床病理参数的相关性。方法检索维普、万方、中国知网、中国生物医学文献、PubMed、Web of Science、Embase、Cochrane中英文数据库中关于MUC1在甲状腺癌中表...目的通过Meta分析探讨甲状腺癌组织中黏蛋白1(MUC1)表达的临床意义及其与各临床病理参数的相关性。方法检索维普、万方、中国知网、中国生物医学文献、PubMed、Web of Science、Embase、Cochrane中英文数据库中关于MUC1在甲状腺癌中表达及其意义的文献,以比值比(OR)和95%置信区间(95%CI)为效应指标,采用STATA 14软件进行Meta分析,并对发表偏倚及敏感性进行检验。结果共纳入13项病例对照研究,甲状腺癌病例组共1157例,非甲状腺癌对照组共509例。结果显示,甲状腺癌病例组MUC1表达明显高于非甲状腺癌对照组(OR=9.78,95%CI:7.49~12.78,P<0.001);伴有淋巴结转移的甲状腺癌组织中MUC1表达高于无淋巴结转移的甲状腺癌组织(OR=3.08,95%CI:1.37~6.92,P<0.05);TNM分期为Ⅲ~Ⅳ期的甲状腺癌组织中MUC1表达高于TNM分期为Ⅰ~Ⅱ期的甲状腺癌组织(OR=1.88,95%CI:1.22~2.90,P<0.05)。结论与非甲状腺癌对照组比较,甲状腺癌病例组MUC1呈高表达,且MUC1高表达与淋巴结转移、TNM分期密切相关。MUC1与甲状腺癌的发生和发展存在相关性,有望成为甲状腺癌分子研究领域的一项新靶标。展开更多
AIM： To investigate the expressions of MUC1 and MUC5AC in intrahepatic cholangiocarcinoma （ICC）. Association of expressions of mucins MUC1 and MUC5AC with clinical findings, metastasis, and survival of the liver fl...AIM： To investigate the expressions of MUC1 and MUC5AC in intrahepatic cholangiocarcinoma （ICC）. Association of expressions of mucins MUC1 and MUC5AC with clinical findings, metastasis, and survival of the liver fluke-associated ICC patients was determined. METHODS： The expressions of MUC1 and MUC5AC mucins were examined by immunohistochemical staining in 87 cases of histologically-proven ICC. The expressions of mucins in relationship between clinicopathological significance and prognosis of the patients were evaluated. RESULTS： Fifty-two patients （60%） exhibited both MUC1 and MUCSAC expressions, whereas 31% expressed either MUC1 or MUC5AC, and 9% expressed neither. High MUC1 immunoreactivity displayed a significant correlation wibh tumor progression as reflected by vascular invasion （P〈0.001）, whereas high expression of MUC5AC significantly correlated with neural invasion （P = 0.022） and advanced ICC stage （P = 0.008）. Patients with high expression of MUC1 had a significantly shorter survival （P = 0.0002）. According to multivariate analyses, MUC1 reactivity （P = 0.026）, histological grading and stage of tumor represented the least probability of survival. CONCLUSION： MUC1 is overexpressed in liver flukeassociated cholangiocarcinoma and relates to vascular invasion and poor prognosis, whereas MUC5AC mucin is neoexpressed and relates to neural invasion and advanced ICC stage. High MUC1 expression in tumor may be useful for predicting the poor outcome of ICC patients.展开更多
AIM:To evaluate the influence of MUC1 mucin variable number of tandem repeats (VNTR) variability on H pylori adhesion to gastric cells. METHODS: Enzyme linked immunosorbent assay (ELISA)-based adhesion assays were per...AIM:To evaluate the influence of MUC1 mucin variable number of tandem repeats (VNTR) variability on H pylori adhesion to gastric cells. METHODS: Enzyme linked immunosorbent assay (ELISA)-based adhesion assays were performed to measure the adhesion of different H pylori strains (HP26695 and HPTx30a) to gastric carcinoma cell lines (GP202 and MKN45) and GP202 clones expressing recombinant MUC1 with different VNTR lengths. RESULTS: Evaluation of adhesion results shows that H pylori pathogenic strain HP26695 has a significantly higher (P < 0.05) adhesion to all the cell lines and clones tested, when compared to the non-pathogenic strain HPTx30a. Bacteria showed a significantly higher (P < 0.05) adhesion to the GP202 cell line, when compared to the MKN45 cell line. Furthermore, both strains showed a significantly higher (P < 0.05) adhesion to GP202 clones with larger MUC1 VNTR domains. CONCLUSION: This work shows that MUC1 mucin variability conditions H pylori binding to gastric cells. The extent of bacterial adhesion depends on the size of theMUC1 VNTR domain. The adhesion is further dependent on bacterial pathogenicity and the gastric cell line. MUC1 mucin variability may contribute to determine H pylori colonization of the gastric mucosa.展开更多
AIM:To explore useful prognostic factors for mucinous adenocarcinoma(MAC) in the colon and rectum.METHODS:MAC was divided into low-and high-grade types based on the degree of structural differentiation;low-grade MAC a...AIM:To explore useful prognostic factors for mucinous adenocarcinoma(MAC) in the colon and rectum.METHODS:MAC was divided into low-and high-grade types based on the degree of structural differentiation;low-grade MAC arisen from well to moderately differentiated adenocarcinoma and papillary carcinoma,and high-grade MAC from poorly differentiated adenocarcinoma and signet ring cell carcinoma.Immunohistochemically,the expression of 2 types of MUC1(MUC1/DF and MUC1/CORE),MUC2,2 types of MUC5AC(MUC5AC/CHL2 and HGM),MUC6,CDX2,and CD10 was examined in 16 cases of MAC consisting of 6 low-and 10 high-grade types.RESULTS:MUC1/DF3 was expressed in 3 of 6 low-grade MAC(50) and 10 of 10 high-grade MAC(100).MUC1/CORE was expressed in 1 of 6 lowgrade MAC(16.7) and 7 of 10 high-grade MAC(70).MUC2 was expressed in all MAC regardless of the grade.MUC5AC was expressed in 6 of 6 low-grade MAC(100) and 4 of 10 high-grade MAC(40).HGM was expressed in 5 of 6 low-grade MAC(83.3) and 6 of 10 high-grade MAC(60).Expression of MUC6 and CD10 was undetected in all MAC regardless of the grade.CDX2 was expressed in 5 of 6 low-grade MAC(83.3) and 7 of 10 high-grade MAC(70).Taken together,MUC1/DF3 was expressed significantly more frequently in high-grade MAC than in low-grade,and MUC5AC/CHL2 was expressed significantly more frequently in low-grade MAC than in high-grade.CONCLUSION:It is proposed that MUC1/DF3 and MUC5AC/CHL2 immunostaining is useful to discriminate high-grade MAC from low-grade MAC.展开更多
文摘Objective To investigate the effect of mucin 1(MUC1)on the proliferation and apoptosis of nasopharyngeal carcinoma(NPC)and its regulatory mechanism.Methods The 60 NPC and paired para-cancer normal tissues were collected from October 2020 to July 2021 in Quanzhou First Hospital.The expression of MUC1 was measured by real-time quantitative PCR(qPCR)in the patients with PNC.The 5-8F and HNE1 cells were transfected with siRNA control(si-control)or siRNA targeting MUC1(si-MUC1).Cell proliferation was analyzed by cell counting kit-8 and colony formation assay,and apoptosis was analyzed by flow cytometry analysis in the 5-8F and HNE1 cells.The qPCR and ELISA were executed to analyze the levels of TNF-αand IL-6.Western blot was performed to measure the expression of MUC1,NFкB and apoptosis-related proteins(Bax and Bcl-2).Results The expression of MUC1 was up-regulated in the NPC tissues,and NPC patients with the high MUC1 expression were inclined to EBV infection,growth and metastasis of NPC.Loss of MUC1 restrained malignant features,including the proliferation and apoptosis,downregulated the expression of p-IкB、p-P65 and Bcl-2 and upregulated the expression of Bax in the NPC cells.Conclusion Downregulation of MUC1 restrained biological characteristics of malignancy,including cell proliferation and apoptosis,by inactivating NF-κB signaling pathway in NPC.
文摘Background: Fusobacterium nucleatum can cause opportunistic and chronic infections and has recently been shown to be involved in colorectal cancer. However, the specific mechanism by which F. nucleatum induces colorectal carcinoma remains unclear. Methods: We downloaded the GSE110223, GSE110224, GSE113513 and GSE122183 microarray datasets from the Gene Expression Omnibus (GEO) database. Identification of differentially expressed genes (DEGs) related to F. nucleatum in CRC by overlapping data sets was performed. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genome pathway (KEGG) analyses were used for enrichment analysis. Moreover, Cytoscape software constructed a protein-protein interaction (PPI) network of differentially expressed genes. Finally, western blot and RT-qPCR analysis identified the relative protein and mRNA expression of hub genes in the cell model. Results: In total, 118 DEGs in F. nucleatum-associated CRC were screened from nonoverlapping microarray data, among which 20 upregulated and 98 downregulated DEGs were identified. The 118 DEGs were significantly correlated with diverse functions and pathways. The hub gene MUC1 had higher centrality scores in the PPI network, and the top 5 closely interacting hub genes, SLC7A11, AGR2, KRT18, CARTPT and TSPYL5, were identified. Conclusion: Our evidence suggests that the identified DEGs associated with F. nucleatum enhance our comprehension of the molecular Mechanisms underlying the tumorigenesis and development of CRC and might be used as molecular targets and diagnostic biomarkers for the treatment of CRC.
文摘目的通过Meta分析探讨甲状腺癌组织中黏蛋白1(MUC1)表达的临床意义及其与各临床病理参数的相关性。方法检索维普、万方、中国知网、中国生物医学文献、PubMed、Web of Science、Embase、Cochrane中英文数据库中关于MUC1在甲状腺癌中表达及其意义的文献,以比值比(OR)和95%置信区间(95%CI)为效应指标,采用STATA 14软件进行Meta分析,并对发表偏倚及敏感性进行检验。结果共纳入13项病例对照研究,甲状腺癌病例组共1157例,非甲状腺癌对照组共509例。结果显示,甲状腺癌病例组MUC1表达明显高于非甲状腺癌对照组(OR=9.78,95%CI:7.49~12.78,P<0.001);伴有淋巴结转移的甲状腺癌组织中MUC1表达高于无淋巴结转移的甲状腺癌组织(OR=3.08,95%CI:1.37~6.92,P<0.05);TNM分期为Ⅲ~Ⅳ期的甲状腺癌组织中MUC1表达高于TNM分期为Ⅰ~Ⅱ期的甲状腺癌组织(OR=1.88,95%CI:1.22~2.90,P<0.05)。结论与非甲状腺癌对照组比较,甲状腺癌病例组MUC1呈高表达,且MUC1高表达与淋巴结转移、TNM分期密切相关。MUC1与甲状腺癌的发生和发展存在相关性,有望成为甲状腺癌分子研究领域的一项新靶标。
基金Supported by the Thailand Research Fund, No. BRG/06/2544Royal Golden Jubilee PhD Program Grant, No. PHD/0045/2542 to Boonla C and Wongkham S
文摘AIM： To investigate the expressions of MUC1 and MUC5AC in intrahepatic cholangiocarcinoma （ICC）. Association of expressions of mucins MUC1 and MUC5AC with clinical findings, metastasis, and survival of the liver fluke-associated ICC patients was determined. METHODS： The expressions of MUC1 and MUC5AC mucins were examined by immunohistochemical staining in 87 cases of histologically-proven ICC. The expressions of mucins in relationship between clinicopathological significance and prognosis of the patients were evaluated. RESULTS： Fifty-two patients （60%） exhibited both MUC1 and MUCSAC expressions, whereas 31% expressed either MUC1 or MUC5AC, and 9% expressed neither. High MUC1 immunoreactivity displayed a significant correlation wibh tumor progression as reflected by vascular invasion （P〈0.001）, whereas high expression of MUC5AC significantly correlated with neural invasion （P = 0.022） and advanced ICC stage （P = 0.008）. Patients with high expression of MUC1 had a significantly shorter survival （P = 0.0002）. According to multivariate analyses, MUC1 reactivity （P = 0.026）, histological grading and stage of tumor represented the least probability of survival. CONCLUSION： MUC1 is overexpressed in liver flukeassociated cholangiocarcinoma and relates to vascular invasion and poor prognosis, whereas MUC5AC mucin is neoexpressed and relates to neural invasion and advanced ICC stage. High MUC1 expression in tumor may be useful for predicting the poor outcome of ICC patients.
基金Portuguese Foundation for Science and Technology(FCT)Project POCTI/CBO/44812/2002+1 种基金Project POCTI/SAU-IMI/56895/2004 National Institutes of Health, R01-CA57362
文摘AIM:To evaluate the influence of MUC1 mucin variable number of tandem repeats (VNTR) variability on H pylori adhesion to gastric cells. METHODS: Enzyme linked immunosorbent assay (ELISA)-based adhesion assays were performed to measure the adhesion of different H pylori strains (HP26695 and HPTx30a) to gastric carcinoma cell lines (GP202 and MKN45) and GP202 clones expressing recombinant MUC1 with different VNTR lengths. RESULTS: Evaluation of adhesion results shows that H pylori pathogenic strain HP26695 has a significantly higher (P < 0.05) adhesion to all the cell lines and clones tested, when compared to the non-pathogenic strain HPTx30a. Bacteria showed a significantly higher (P < 0.05) adhesion to the GP202 cell line, when compared to the MKN45 cell line. Furthermore, both strains showed a significantly higher (P < 0.05) adhesion to GP202 clones with larger MUC1 VNTR domains. CONCLUSION: This work shows that MUC1 mucin variability conditions H pylori binding to gastric cells. The extent of bacterial adhesion depends on the size of theMUC1 VNTR domain. The adhesion is further dependent on bacterial pathogenicity and the gastric cell line. MUC1 mucin variability may contribute to determine H pylori colonization of the gastric mucosa.
基金Supported by Grants-Aid for Researchers,Hyogo College of Medicine and Grants-in Aid for Scientif ic Research and Hitec Research Center Grant from the Ministry of Education,Science,Sports,Culture,and Technology of Japan
文摘AIM:To explore useful prognostic factors for mucinous adenocarcinoma(MAC) in the colon and rectum.METHODS:MAC was divided into low-and high-grade types based on the degree of structural differentiation;low-grade MAC arisen from well to moderately differentiated adenocarcinoma and papillary carcinoma,and high-grade MAC from poorly differentiated adenocarcinoma and signet ring cell carcinoma.Immunohistochemically,the expression of 2 types of MUC1(MUC1/DF and MUC1/CORE),MUC2,2 types of MUC5AC(MUC5AC/CHL2 and HGM),MUC6,CDX2,and CD10 was examined in 16 cases of MAC consisting of 6 low-and 10 high-grade types.RESULTS:MUC1/DF3 was expressed in 3 of 6 low-grade MAC(50) and 10 of 10 high-grade MAC(100).MUC1/CORE was expressed in 1 of 6 lowgrade MAC(16.7) and 7 of 10 high-grade MAC(70).MUC2 was expressed in all MAC regardless of the grade.MUC5AC was expressed in 6 of 6 low-grade MAC(100) and 4 of 10 high-grade MAC(40).HGM was expressed in 5 of 6 low-grade MAC(83.3) and 6 of 10 high-grade MAC(60).Expression of MUC6 and CD10 was undetected in all MAC regardless of the grade.CDX2 was expressed in 5 of 6 low-grade MAC(83.3) and 7 of 10 high-grade MAC(70).Taken together,MUC1/DF3 was expressed significantly more frequently in high-grade MAC than in low-grade,and MUC5AC/CHL2 was expressed significantly more frequently in low-grade MAC than in high-grade.CONCLUSION:It is proposed that MUC1/DF3 and MUC5AC/CHL2 immunostaining is useful to discriminate high-grade MAC from low-grade MAC.
