Purpose: The aim of this study was to access the safety profiles of 2 fusion proteins with anti-vascular endothelial growth factor action (ziv-aflibercept and aflibercept) on retinal pigment epithelium cells and Muller-Glia cells in culture by assessing cell viability post drug exposure.
Methods: Primary human retinal pigment epithelium cells (pRPE) and Muller-Glia cells (Mio-M1) were exposed to the clinical standardized concentrations of ziv-aflibercept (25 mg/mL) and aflibercept (40 mg/mL). Progressively higher concentrations of NaCl (300, 500, 1,000, 1,500, 2,000, 5,000, and 10,000 mosm/kg) were also applied to cells to assess the possibility of potentiating hyperosmotic cytotoxity effect. The study was applied to measure pRPE and Mio-M1 viability by a tetrazolium dye-reduction assay (XTT).
Results: Cell viability of both pRPE and Mio-M1 presented no significant changes after exposure of ziv-aflibercept and aflibercept. Progressive NaCl concentrations did not significantly alter cell viability. The exposure to the negative control of 75 µL/mL of dimethyl sulfoxide showed significant reduction in cell viability.
Conclusions: At clinical doses, neither ziv-aflibercept nor aflibercept caused any significant reduction in cell viability in vitro. Furthermore, injection solutions of NaCl with higher osmolality caused no significant reduction in cell viability.
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