Journal: International Journal of Molecular Sciences
Article Title: Towards an In Vitro 3D Model for Photosynthetic Cancer Treatment: A Study of Microalgae and Tumor Cell Interactions
doi: 10.3390/ijms232113550
Figure Lengend Snippet: Effect of illumination in co-cultures of C. reinhardtii and C32 tumor cells. Cells were co-cultured for 24 h in the absence or presence of light. As shown by an MTT assay, regardless of the presence of light, the mitochondrial activity of C32 cells decreased significantly in co-cultures ( A , left ), while cell death did not vary amongst groups but was slightly increased from control ( A , right ). Similarly, light did not affect viability nor proliferation capacity of the microalgae in co-cultures; however, its mortality was significantly lower when compared to control monocultures in cell media ( B ). The effect of light on hypoxia was evaluated ( C ) by HIF-1α expression. Cells were grown in normoxia (I), incubated with CoCl (II) or grown in hypoxia (III). HIF-1α decreased in illuminated hypoxic co-cultures (IV) when compared to hypoxic co-cultures in the dark (V). All assays were performed in at least three independent experiments and data are presented as average + SE. The scale bar represents 1 mm in ( B ). p ≤ 0.05 was considered as significant by using a two-way ANOVA test in an MTT viability assay, a Mann–Whitney test in an LDH release assay, and one-way ANOVA in B and C. * = p ≤ 0.05, ns = not significant.
Article Snippet: The C32 human melanoma cell line was obtained from ATCC (CRL-1585).
Techniques: Cell Culture, MTT Assay, Activity Assay, Control, Expressing, Incubation, MTT Viability Assay, MANN-WHITNEY, Lactate Dehydrogenase Assay