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Gamal-Eldeen AM, Raafat BM, Alrehaili AA, El-Daly SM, Hawsawi N, Banjer HJ, Raafat EM, Almehmadi MM. Anti-hypoxic Effect of Polysaccharide Extract of Brown Seaweed Sargassum dentifolium in Tongue Squamous Cell Carcinoma. Front Nutr 2022; 9:854780. [PMID: 35399691 PMCID: PMC8988684 DOI: 10.3389/fnut.2022.854780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/14/2022] [Indexed: 11/13/2022] Open
Abstract
Sargassum dentifolium, (Turner) C. Agarth, 1820, is an edible brown alga collected from red seashores, Egypt. Oral tongue squamous cell carcinoma (OTSCC) is an aggressive malignancy. Hypoxia leads to chemotherapeutic resistance. This work aimed to explore the anti-hypoxia effect of water-soluble polysaccharide fractions of S. dentifolium (SD1-SD3) in CAL-27 OTSCC cells. Cell cytotoxicity assay (MTT); cell death mode (DNA staining); total hypoxia (pimonidazole), HIF-1α (ELISA and immunocytochemistry), HIF-1β (ELISA), and hsa-miRNA-21-5p and hsa-miRNA-210-3p (qRT-PCR) were investigated. SD1 and SD2 showed a cytotoxic effect due to apoptosis. SD2 and SD3 decreased total cell hypoxia, inhibited miR-210 (p < 0.001 and p < 0.01), miR-21 (p < 0.01 and p < 0.05), and HIF-1α (p < 0.01 and p < 0.05), respectively. However, only SD3 suppressed HIF-1β (p < 0.05). In conclusion, SD2 showed a potential anti-hypoxia effect through amelioration of HIF-1α regulators, which may help in decreasing hypoxia-induced therapeutic resistance.
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Affiliation(s)
- Amira M. Gamal-Eldeen
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia,High Altitude Research Center, Prince Sultan Medical Complex, Al-Hawiyah, Taif University, Taif, Saudi Arabia,*Correspondence: Amira M. Gamal-Eldeen, ,
| | - Bassem M. Raafat
- Radiological Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Amani A. Alrehaili
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Sherien M. El-Daly
- Medical Biochemistry Department, National Research Centre, Cairo, Egypt,Cancer Biology and Genetics Laboratory, Centre of Excellence for Advanced Sciences, National Research Centre, Cairo, Egypt
| | - Nahed Hawsawi
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Hamsa J. Banjer
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Eman M. Raafat
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Helwan University, Cairo, Egypt
| | - Mazen M. Almehmadi
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
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