BACKGROUND/AIM: This study investigated a novel combined therapy of rosmarinic acid (RA)/blue light on head and neck squamous cell carcinoma (HNSCC) cell proliferation in vitro. MATERIALS AND METHODS: HNSCC cells were exposed to BL (500 mW/cm2) for 90 s, and incubated with 80 μg/ml RA for 1 hour. Cell viability was determined after 24 h using WST-1 assay. Western blot was used to detect treatment-induced changes in epidermal growth factor receptor (EGFR) activation. Hydrogen peroxide (H2O2) and nitric oxide levels were quantified using CM-H2DCFH-DA assays. Apoptosis was assessed using Annexin V/PI staining and flow cytometry. RESULTS: RA/blue light treatment resulted in a significant reduction in cell viability, EGFR activation and H2O2 levels in all HNSCC cell lines. However, no significant changes in NO production or apoptosis induction were found. CONCLUSION: RA/blue light effectively decreased HNSCC cell proliferation through reduction in EGFR activation and H2O2 production, and not via induction of apoptosis. Copyright
BACKGROUND/AIM: This study investigated a novel combined therapy of rosmarinic acid (RA)/blue light on head and neck squamous cell carcinoma (HNSCC) cell proliferation in vitro. MATERIALS AND METHODS: HNSCC cells were exposed to BL (500 mW/cm2) for 90 s, and incubated with 80 μg/ml RA for 1 hour. Cell viability was determined after 24 h using WST-1 assay. Western blot was used to detect treatment-induced changes in epidermal growth factor receptor (EGFR) activation. Hydrogen peroxide (H2O2) and nitric oxide levels were quantified using CM-H2DCFH-DA assays. Apoptosis was assessed using Annexin V/PI staining and flow cytometry. RESULTS:RA/blue light treatment resulted in a significant reduction in cell viability, EGFR activation and H2O2 levels in all HNSCC cell lines. However, no significant changes in NO production or apoptosis induction were found. CONCLUSION:RA/blue light effectively decreased HNSCC cell proliferation through reduction in EGFR activation and H2O2 production, and not via induction of apoptosis. Copyright
Authors: Mabel Catalán; Vicente Castro-Castillo; Javier Gajardo-de la Fuente; Jocelyn Aguilera; Jorge Ferreira; Ricardo Ramires-Fernandez; Ivonne Olmedo; Alfredo Molina-Berríos; Charlotte Palominos; Marcelo Valencia; Marta Domínguez; José A Souto; José A Jara Journal: RSC Med Chem Date: 2020-08-19
Authors: Saba Noor; Taj Mohammad; Malik Abdul Rub; Ali Raza; Naved Azum; Dharmendra Kumar Yadav; Md Imtaiyaz Hassan; Abdullah M Asiri Journal: Arch Pharm Res Date: 2022-04-07 Impact factor: 6.010