期刊
TOXICOLOGY MECHANISMS AND METHODS
卷 33, 期 5, 页码 388-400出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/15376516.2022.2152514
关键词
microalgae; T-2 toxin; HepG2 cells; cytotoxicity; inflammation
类别
This study evaluated the cytotoxicity and inflammatory response of freeze-dried microalgae. Results showed that Tetraselmis chuii extract increased cell viability and up-regulated the expression of inflammatory genes.
Microalgae are one promising source for the production of bioactive compounds. However, microalgae can accumulate harmful substances. So, our objectives were (i) to evaluate cell viability after Phaeodactylum triconutum (0% and 65% cell disruption, DR) and Tetraselmis chuii (0% and 67% DR) freeze-dried exposure in HepG2 cells by MTT assay; (ii) to evaluate cell viability after P. triconutum and T. chuii extract exposure; (iii) to assess the effect in cell viability when they were simultaneously exposed to T-2 toxin and, (iv) to evaluate if inflammatory response is related to the mechanism of toxicity of these microalgae by qPCR assays. Results demonstrated that cell viability did not increase after freeze-dried microalgae exposure in HepG2 cells. And, no IC50 values were observed. However, an increase in HepG2 cell viability after exposure of T. chuii 0% DR extract at 5, 25 and 100 mu g/mL was observed. Additionally, 1:64 diluted T. chuii 0% DR with IC50/4 T-2 and with IC50/2 T-2 and 1:32 diluted T. chuii 0% DR with IC50/4 T-2 showed an increase in cell viability. Both microalgae increased the relative TNF-alpha, IL-1 beta and IL-6 mRNA expression. Concluding, no cytotoxic effect was evidenced but, it was noted up-regulation of inflammatory genes after T. chuii exposure in HepG2 cell. Thus, more studies related the mechanistic toxicity of microalgae are needed to evaluate the potential toxicological risk of inflammation of these novel foods. .
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