Objective: This study aims to study the effect of the enhancer of zeste homolog 2 (EZH2) inhibitor GSK126 on the proliferation and apoptosis of human tongue squamous cell carcinoma cells in vitro and explore its related mechanisms in order to obtain insights into the clinical treatment of tongue squamous cell carcinoma.
Methods: Different concentrations of GSK126 were applied to CAL-27 cells of tongue squamous cell carcinoma, and the effects of drugs on cell proliferation were detected through methyl thiazolyl tetrazolium (MTT) assay, colony formation assay, and 5-ethynyl-2'-deoxyuridine (EdU) fluorescence staining. Hoechst33342 fluorescence staining and the JC-1 method were used in observing apoptosis. The expression levels of extracellular regulated protein kinases (ERK), phospho-extracellular regulated protein kinases (p-ERK), Bax, Bcl-2, and Cleaved caspase-9 in Cal-27 cells were detected through Western blot.
Results: GSK126 inhibited CAL-27 cell proliferation and promoted apoptosis. GSK126 down-regulated the expression of p-ERK and Bcl-2 and increased the expression of Bax and Cleaved caspase-9 (P<0.05).
Conclusions: GSK126 can inhibit the proliferation of CAL-27 cells in tongue squamous cell carcinoma and promote its apoptosis, and the related mechanism may be associated with the inhibition of the MEK/ERK signaling pathway and activation of the Bax/Bcl-2 pathway.
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http://dx.doi.org/10.7518/hxkq.2020.05.004 | DOI Listing |
Head Neck
January 2025
Institute of Head and Neck Studies and Education (InHANSE), Department of Cancer and Genomics, University of Birmingham, UK.
Background: The aim of this clinical survey was to assess variations in head and neck squamous cell carcinoma from an unknown primary (HNSCCUP) diagnostic practices across international centers.
Methods: Clinical practice survey of experts nominated by Head and Neck Cancer International Group (HNCIG) and International Federation of Head and Neck Oncologic Societies (IFHNOS).
Results: Responses were received from 48/49 (97.
Clin Otolaryngol
January 2025
Head and Neck Unit, The Royal Marsden Hospital, London, UK.
Objectives: Head and neck squamous cell carcinoma from unknown primary (HNSCCUP) is a rare and challenging condition. This study aimed to investigate the diagnostic pathways of suspected HNSCCUP patients in the United Kingdom.
Methods: A retrospective observational cohort study was conducted, over 5 years from January 2015, in UK Head and Neck centres of consecutive adults undergoing 18F-Fluorodeoxyglucose-PET-CT (PET-CT) within 3 months of diagnosis with metastatic cervical squamous cell carcinoma.
Head Neck Pathol
January 2025
Department of Otolaryngology - Head and Neck Surgery, Harvard Medical School, Boston, MA, USA.
We present the case of a 51-year-old man with Von Hippel-Lindau disease and a history of renal transplantation who developed a persistent, painful tongue lesion with episodes of significant swelling. Given his history of prolonged immunosuppression and elevated cancer risk, oral squamous cell carcinoma was a major concern. However, histopathological evaluation confirmed recrudescent herpes simplex virus (HSV) infection rather than malignancy.
View Article and Find Full Text PDFBraz Oral Res
January 2025
Universidade Estadual de Campinas - Unicamp, Piracicaba Dental School, Dnepartment of Oral Diagnosis, Piracicaba, SP, Brazil.
The aim of this study was to perform a clinicopathological analysis of oral squamous cell carcinoma (OSCC) in young patients from the northeast of Brazil and compare with elderly individuals. This retrospective study reviewed 104 OSCC cases from 2000 to 2015, focusing on patients under 40 and over 60 at diagnosis. Forty-two patients under 40 years old (40.
View Article and Find Full Text PDFClin Nucl Med
November 2024
From the Department of Nuclear Medicine, All India Institute of Medical Sciences, Bhubaneswar, India.
Oral squamous cell carcinoma (OSCC) is one of the most common malignancies worldwide. Locoregional nodal involvement by OSCC is commonly encountered. Current conventional and functional imaging modalities have limited diagnostic accuracy in nodal assessment, particularly in head and neck cancer.
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