Gene expression signatures in EGFR-deleted oral squamous cell carcinoma (OSCC) cell lines
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE222629 | GEO | 2023/05/01
REPOSITORIES: GEO
Similar Datasets
Project description:Gene expression signatures in EGFR-deleted oral squamous cell carcinoma (OSCC) cell lines
| PRJNA922911 | ENA
Project description:Head and neck squamous cell carcinoma (HNSCC) is the sixth most common malignancy in the world; oral squamous cell carcinomas (OSCC) account for the majority of HNSCC cases. A major driver of OSCC is the epidermal growth factor receptor (EGFR), a receptor tyrosine kinase (RTK) with 12 N-glycosylation sites whose activity is aberrantly upregulated in 80-90% of tumors. EGFR antennary-fucosylated glycans have been shown to suppress EGFR dimerization and signaling in lung adenocarcinoma. High levels of fucosylated glycan epitopes have also been observed in OSCC, but invasive regions lose expression of linkage-specific fucosylated epitopes, suggesting that certain fucosylated glycans are involved in the suppression of cell growth and invasion. We found that EGFR from metastatic HSC-3 cells has low levels of fucosylated N-glycans, while EGFR from non-metastatic CAL27 cells shows higher levels of fucosylation at multiple EGFR glycosylation sites including sites N420 and N579, via nUPLC-MS/MS. In cell culture and in mouse tumor xenografts, treatment with ICG-001, a small molecule inhibitor of the interaction between nuclear -catenin and CREB-binding protein (CBP) resulted in higher expression of FUT2 and FUT3, higher fucosylation of EGFR at sites N420 and N579, and decreased EGFR abundance. In addition, we have performed in-depth characterization of multiply-fucosylated N-glycans via glycopeptide tandem mass spectrometry to understand which fucosylated glycan epitopes are involved in the observed effect.
2020-03-26 | PXD017060 | Pride
Project description:Oral squamous cell carcinoma (OSCC) is a main reason of oral cancer mortality and morbidity. Cancer of oral cavity in central south Asia, ranks among third most common kinds of cancer. The discovery of candidate markers to differentiate normal from malignant cells in clinical diagnosis of OSCC would be of critical importance because this malignancy has poor prognosis. To improve the clinical outcome in OSCC patients, the present study was aimed at identifying robust candidate biomarkers for early OSCC diagnosis and to enhance understanding of the mechanisms of disease progression and pathogenesis. Of particular interest are proteins that can be found in tissue lysates of OSCC tumor vs normal adjacent mucosa samples and secreted in cell line Secretomes of HNSCC for non-invasive detection. We analysed 17 paired human malignant OSCC tissues and normal adjacent tissue in addition to secretomes of 9 HNSCC cell lines. The proteome dataset of OSCC and normal tissues consisted of 5,123 protein groups, including 299 proteins with strong differential expression (p-value <0.01, fold change barrier to ˃+2 and <-2, 205 upregulated and 94 down regulated) and 134 common proteins were also found out of total dataset of 4473 identified proteins of HNSCC cell line secretomes. Functional data analysis revealed that these differential proteins were significantly associated with multiple biological processes. Myogenesis, Fatty Acid Metabolism and KRAS Signaling DN were associated with the proteins downregulated in cancer tissues, while Protein Secretion, Unfolded Protein Response, Spliceosomal complex assembly, Protein localization to endosome and Interferon Gamma Response were enriched in the set of upregulated proteins and these regulated proteins may be classically or non-classically secreted. Furthermore, we found differential enrichment of Creb3L1, ESRRA, YY, ELF2, STAT1 and XBP transcription factors potentially regulating these major pathways.
2022-04-04 | PXD025701 | Pride
Project description:As a Class II small leucine-rich proteoglycan, fibromodulin (FMOD) plays critical roles in collagen fibrillogenesis and angiogenesis. However, the biological function of FMOD in oral squamous cell carcinoma remains unknown to date. In this study, immunohistochemistry and immunofluorescence assays identified that FMOD protein was located in cytoplasm and nucleus and was overexpressed in OSCC tissues and cell lines. Clinical analysis confirmed that FMOD overexpression showed a significant association with malignant progression (P=0.011) and lymph node metastasis (P=0.032) in OSCC patients. Moreover, loss-of-function studies verified that knockdown of FMOD significantly inhibited OSCC growth and metastasis in vitro and in vivo. Mechanismly, RNA sequencing studies further confirmed that. Knockdown of FMOD expression inhibited OSCC cell proliferation, migration, invasion, and tumor growth probably through altering transcriptome leading to active cell cycle, down-regulating Cell adhesion molecules and ECM-receptor interaction and through inhibiting EGFR-ERK and EGFR-AKT pathways.
2023-08-31 | GSE227643 | GEO
Project description:OSCC is associated with substantial mortality and morbidity. To identify potential biomarkers for the early detection of invasive OSCC, we compared the gene expressions of OSCC, oral dysplasia, and normal oral tissue from patients without oral cancer or preneoplastic oral lesions (controls). Results provided models of gene expression to distinguish OSCC from controls. RNA from 167 OSCC, 17 dysplasia and 45 normal oral tissues were extracted and hybridized to Affymetrix U133 2.0 Plus GeneChip arrays. The differentially expressed genes were identified using GenePlus software and the validation was done using RT-PCR, using independent internal and external datasets.
2011-07-21 | E-GEOD-30784 | biostudies-arrayexpress
Project description:OSCC is associated with substantial mortality and morbidity. To identify potential biomarkers for the early detection of invasive OSCC, we compared the gene expressions of OSCC, oral dysplasia, and normal oral tissue from patients without oral cancer or preneoplastic oral lesions (controls). Results provided models of gene expression to distinguish OSCC from controls.
2011-07-22 | GSE30784 | GEO
Project description:According to epidemiological studies, a vast majority, approximately 80%~90% of male OSCC patients in Taiwan habitually drink alcohol (A), and chew betel quid (B), and use cigarette (C). To assess the impact of these dietary factors on the epigenome, we conduct a high-throughput screen survey in an oral cancer cohort with exposure of A, B, and C. Results indicate aberrent methylation patterns are prevalent in OSCC patients with ABC risk factors. Genomic DNA was collected from tumor and non-tumor pair-wise samples. These biopsies were obtained from 40 male OSCC patients who regularly drink alcohol, chew areca nut and smoking.
2015-04-01 | E-GEOD-38532 | biostudies-arrayexpress
Project description:According to epidemiological studies, a vast majority, approximately 80%~90% of male OSCC patients in Taiwan habitually drink alcohol (A), and chew betel quid (B), and use cigarette (C). To assess the impact of these dietary factors on the transcriptom, we conduct a high-throughput screen survey in an oral cancer cohort with exposure of A, B, and C. Results indicate several potential oncogenes and tumor suppressor genes are dysregulated in OSCC patients with ABC risk factors. Total RNA was collected from tumor and non-tumor pair-wise samples. These biopsies were obtained from 40 male OSCC patients who regularly drink alcohol, chew areca nut and smoking.
2013-05-02 | E-GEOD-37991 | biostudies-arrayexpress
Project description:According to epidemiological studies, a vast majority, approximately 80%~90% of male OSCC patients in Taiwan habitually drink alcohol (A), and chew betel quid (B), and use cigarette (C). To assess the impact of these dietary factors on the epigenome, we conduct a high-throughput screen survey in an oral cancer cohort with exposure of A, B, and C. Results indicate aberrent methylation patterns are prevalent in OSCC patients with ABC risk factors.
2015-04-01 | GSE38532 | GEO
Project description:Gene expression profiling of 66 HPV-negative OSCC primary tumor was performed to identify gene expression that is related to lymph node metastasis and poor prognosis. These gene expression profiles were combined in silico with gene expression profiles of 84 OSCC primary tumors retrieved from GSE30788.
2017-08-10 | GSE85446 | GEO