ISSN 1673-3770 CN 37-1437/R
Journal of Otolaryngology and Ophthalmology of Shandong University ›› 2025, Vol. 39 ›› Issue (1): 68-76.doi: 10.6040/j.issn.1673-3770.0.2024.154
• Original Article • Previous Articles
ZHANG Maohua1, WEI Rifu1, ZHU Zhongshou1, LIU Ping1, GAO Shang1,2, LI Huifeng1
CLC Number:
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| [1] | ZHANG Jin, QI Zhiling, WANG Shaohua, ZHAO Yufeng, MA Xu, WU Yungang. A case report of a new pathogenic gene mutation in neurofibromatosis type I and literature review [J]. Journal of Otolaryngology and Ophthalmology of Shandong University, 2024, 38(2): 73-78. |
| [2] | MA Jing, ZHANG Min, ZHU Xinjie. Adolescent oropharyngeal teratoma:a case report and literature review [J]. Journal of Otolaryngology and Ophthalmology of Shandong University, 2024, 38(2): 89-97. |
| [3] | MA Jingyuan, WU Tianyi, SUN Zhanwei, WANG Weiwei, LI Shichao, WANG Guangke. Correlation between sinonasal inverted papilloma and peripheral inflammatory blood markers [J]. Journal of Otolaryngology and Ophthalmology of Shandong University, 2022, 36(4): 35-39. |
| [4] | The objective of this study was to analyze the effects and possible regulatory mechanisms that Notch receptors could have on cisplatin resistance, observed in nasopharyngeal carcinoma. MethodsWestern blot analysis was used for the detection of Notch receptor expression in nasopharyngeal carcinoma cells and cisplatin-resistant nasopharyngeal carcinoma cells(5-8F, 5-8F/CDDP). Flow cytometry was used to investigate how the combined treatment with 10 μM CDDP and different concentrations of γ-secretase inhibitor(DAPT)could affect apoptosis in 5-8F/CDDP cells. Flow cytometry was also used for the detection of cell cycle stages in DAPT-treated 5-8F / CDDP cells. Finally, western blotting was also used for the detection of drug resistance-related protein expression. All experiments were followed by statistical data analysis. ResultsWe observed significantly higher Notch1 and Notch4 receptor expression in 5-8F/CDDP cells than in 5-8F cells(P=0.003, P=0.004). Furthermore, we described that Notch signaling was inhibited by DAPT in 5-8F/CDDP cells, followed by a significant increase in the apoptosis rate and decrease in cell proliferation, induced by cisplatin in a dose-dependent manner(P<0.05). Moreover, after inhibiting the Notch signaling pathway in 5-8F/CDDP cells, DAPT treatment significantly decreased the expression of Cyclin E and CDK-2, proteins involved in cell cycle regulation, and contributed to blocking the cells in the G1/S phase(P<0.05). At the same time, the expression levels of both the EMT-related protein Slug and the DNA excision repair protein ERCC1 significantly decreased, while that of E-Cadherin was up-regulated. ConclusionUp-regulated expression of Notch1 and Notch4 receptors is associated with cisplatin resistance in nasopharyngeal carcinoma cells. The inactivation of the Notch signaling pathway might thus have the potential to enhance the efficiency of cisplatin chemotherapy in drug-resistant nasopharyngeal carcinoma cells by inhibiting EMT rather than blocking the G1/S cell cycle phase.. Cisplatin resistance in nasopharyngeal carcinoma cells is affected by Notch receptors through the regulation of epithelial-mesenchymal transition rather than cell cycle controlHAN Jibo, ZOU You, YANG Rui, TAO Zezhang Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, ChinaAbstract:Objective〓 [J]. Journal of Otolaryngology and Ophthalmology of Shandong University, 2020, 34(4): 105-110. |
| [5] | ObjectiveThe aim of this study was to provide new perspectives and targets for the treatment of HNSCC by screening differentially expressed genes during cetuximab treatment of head and neck squamous cell carcinoma(HNSCC)using bioinformatics. MethodsThe chip dataset, GSE109756, was downloaded from the GEO database, and the online analysis tool, GEO2R, was used to screen differentially expressed genes in head and neck squamous cell carcinoma tissues treated with and without cetuximab. The DAVID 6.8 and STRING online software were used to analyze the function of the differentially expressed genes, their pathway enrichment, and their protein interactions. Cytoscape was used to visualize and analyze the protein interactions. The online analysis tool, X2K, was used to find the transcription factors, the kinases of differentially expressed genes, and their mutual regulatory relationship with the targeted genes. ResultsNinety-one differentially expressed genes, including 50 up-regulated and 41 down-regulated genes(P<0.05; | logFC | > 1), were found in head and neck squamous cell carcinoma tissues treated with and without cetuximab. The GO and KEGG pathway analyses suggested that these differentially expressed genes were mainly enriched with immunomodulation, extracellular matrix, and other processes. Through the construction of a protein-protein interaction network, we screened CD163, VSIG4, and 3 other core differentially expressed genes(P<0.05), which were up-regulated after cetuximab treatment. In addition, our analysis shows that transcription factors, including SUZ12, TP63, and ESR1, played a key role in cetuximab treatment(P<0.05)and MAPK14, CDK1, and MAPK1 were the most important kinases during the process(P<0.05). ConclusionCD163, VSIG4, and the aforementioned transcription factors and protein kinases may be involved in the biological processes that underlie cetuximab treatment of HNSCC. This study provides new perspectives to facilitate further understanding of the biological mechanism that underlies cetuximab treatment of HNSCC and the exploration of the effectiveness of HNSCC treatment.. Analysis of differentially expressed genes during cetuximab treatment of head and neck squamous cell carcinoma using bioinformaticsYU Kena1, SUN Kaiyue2, ZHANG Jie1, JIN Peng1 1. Department of Otorhinolaryngology & Head and Neck Surgery, The Second Hospital of Shandong University, Jinan 250033, Shandong, China; 2. Shandong Provincial Otorhinolaryngology Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250022, Shandong, ChinaAbstract: [J]. Journal of Otolaryngology and Ophthalmology of Shandong University, 2020, 34(4): 117-124. |
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