The PI3K Signaling Pathway in Head and Neck Squamous Cell Carcinoma

2018 ◽  
pp. 117-154
Author(s):  
Alexander Y. Deneka ◽  
Jason D. Howard ◽  
Christine H. Chung
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Signaling Pathway ◽  
Squamous Cell ◽  
Neck Squamous Cell Carcinoma ◽  
Pi3k Signaling ◽  
Pi3k Signaling Pathway

scholarly journals FOXM1 Promotes Head and Neck Squamous Cell Carcinoma via Activation of the Linc-ROR/LMO4/AKT/PI3K Axis

2021 ◽  
Vol 11 ◽  
Author(s):  
Xiao Ma ◽  
Hong Zhang ◽  
Qian Li ◽  
Erik Schiferle ◽  
Yao Qin ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Signaling Pathway ◽  
Squamous Cell ◽  
Neck Squamous Cell Carcinoma ◽  
Pi3k Signaling ◽  
Tissue Samples ◽  
Pi3k Signaling Pathway ◽  
Proliferation And Invasion

Background/AimPrevious literature has implicated the sustained expression of FOXM1 in numerous human cancers, including head and neck squamous cell carcinoma (HNSCC). The current study aimed to elucidate the function and regulatory mechanism of FOXM1 in HNSCC.MethodsWestern blot and RT-qPCR methods were performed to evaluate the expression of Linc-ROR, FOXM1, and LMO4 in HNSCC tissue samples and cells. The binding between FOXM1 and Linc-ROR was analyzed using a ChIP assay. Various cellular processes including proliferation and invasion abilities were assessed following alteration of FOXM1, Linc-ROR and LMO4 expression in HNSCC cells. Xenograft mouse models were established to validate the in vitro findings.ResultsLinc-ROR and FOXM1 were highly expressed in HNSCC tissues and cells. FOXM1 operated as a potential transcription factor to bind to the promoter region of Linc-ROR. Linc-ROR and FOXM1 exhibited high expression levels in both the clinical tissue samples as well as the HNSCC cells, which could facilitate the proliferation and invasion of HNSCC cells. Linc-ROR upregulated the expression of LMO4 and promoted activation of the AKT/PI3K signaling pathway, thus stimulating the proliferation and invasion of HNSCC cells. Silencing of Linc-ROR brought about a contrasting effect relative to that seen when FOXM1 was overexpressed in HNSCC in vivo.ConclusionsOverall, FOXM1 promoted the expression of Linc-ROR and induced the activation of the LMO4-dependent AKT/PI3K signaling pathway, thus facilitating the occurrence and development of HNSCC.

Regulation of tumor progression via the Snail-RKIP signaling pathway by nicotine exposure in head and neck squamous cell carcinoma

Head & Neck ◽  
2015 ◽  
Vol 37 (12) ◽  
pp. 1712-1721 ◽  
Author(s):  
Shin Nieh ◽  
Shu-Wen Jao ◽  
Chin-Yuh Yang ◽  
Yaoh-Shiang Lin ◽  
Yi-Han Tseng ◽  
...  
Keyword(s):  
Squamous Cell Carcinoma ◽  
Tumor Progression ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Signaling Pathway ◽  
Squamous Cell ◽  
Neck Squamous Cell Carcinoma ◽  
Nicotine Exposure

Abstract 1972: Targeting the IL-6 signaling pathway overcomes cetuximab resistance in head and neck squamous cell carcinoma

2018 ◽  
Author(s):  
Rachel A. O'Keefe ◽  
Neil E. Bhola ◽  
David S. Lee ◽  
Daniel E. Johnson ◽  
Jennifer R. Grandis
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Signaling Pathway ◽  
Squamous Cell ◽  
Neck Squamous Cell Carcinoma

scholarly journals Roles of the Wnt Signaling Pathway in Head and Neck Squamous Cell Carcinoma

2021 ◽  
Vol 7 ◽  
Author(s):  
Jing Xie ◽  
Li Huang ◽  
You-Guang Lu ◽  
Da-Li Zheng
Keyword(s):  
Squamous Cell Carcinoma ◽  
Wnt Signaling ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Signaling Pathway ◽  
Squamous Cell ◽  
Wnt Pathway ◽  
Wnt Signaling Pathway ◽  
Neck Squamous Cell Carcinoma ◽  
Upstream Gene

Head and neck squamous cell carcinoma (HNSCC) is the most common type of head and neck tumor. It is a high incidence malignant tumor associated with a low survival rate and limited treatment options. Accumulating conclusions indicate that the Wnt signaling pathway plays a vital role in the pathobiological process of HNSCC. The canonical Wnt/β-catenin signaling pathway affects a variety of cellular progression, enabling tumor cells to maintain and further promote the immature stem-like phenotype, proliferate, prolong survival, and gain invasiveness. Genomic studies of head and neck tumors have shown that although β-catenin is not frequently mutated in HNSCC, its activity is not inhibited by mutations in upstream gene encoding β-catenin, NOTCH1, FAT1, and AJUBA. Genetic defects affect the components of the Wnt pathway in oral squamous cell carcinoma (OSCC) and the epigenetic mechanisms that regulate inhibitors of the Wnt pathway. This paper aims to summarize the groundbreaking discoveries and recent advances involving the Wnt signaling pathway and highlight the relevance of this pathway in head and neck squamous cell cancer, which will help provide new insights into improving the treatment of human HNSCC by interfering with the transcriptional signaling of Wnt.

scholarly journals Characterization of the immune cell infiltration landscape in head and neck squamous cell carcinoma to aid immunotherapy

2020 ◽  
Author(s):  
Xinhai Zhang ◽  
Tielou Chen ◽  
Boxin Zhang
Keyword(s):  
Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Head And Neck ◽  
Signaling Pathway ◽  
Squamous Cell ◽  
Immune Cell ◽  
Neck Squamous Cell Carcinoma ◽  
Cell Infiltration ◽  
Immune Cell Infiltration ◽  
Stromal Component

Abstract Background: The tumor microenvironment chiefly consists of tumor cells, and tumor-infiltrating immune cells admixed with the stromal component. The recent clinical trial has shown that the tumor immune cell infiltration is correlated with the sensitivity to immunotherapy and the prognosis of head and neck squamous cell carcinoma (HNSC). However, to date, the immune infiltrative landscape of HNSC has not yet been elucidated. Methods: We proposed two computational algorithms to unravel the immune infiltration landscape of 1029 HNSC patients. The Boruta algorithm and principal component algorithms (PCA) were employed to quantify three immune cell infiltration gene subtypes categorized as per the immune cell infiltrations pattern. Results: The high ICI score subtype was characterized by a higher tumor mutation burden (TMB) and the immune-activated signaling pathway. However, a low ICI score subtype was categorized as per the activation of immunosuppressive signaling pathways such as TGF-BETA, WNT signaling pathway, and lower TMB. Two immunotherapy cohorts confirmed patients with higher ICI score demonstrated significant therapeutic advantages and clinical benefits.Conclusions: This demonstrated that the ICI score could serve as an effective prognostic biomarker and predictive indicator for immunotherapy. A comprehensive understanding of the HNSC immune landscape might help in tailoring immunotherapeutic strategies for different patients.

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