Eduardo Anitua1,2, Maria de la Fuente1,2, Susana Del Olmo-Aguado3,4, Carlota Suarez-Barrio3, Jesus Merayo-Lloves3,4, Francisco Muruzabal1,2. 1. BTI Biotechnology Institute, Vitoria, Spain. 2. University Institute for Regenerative Medicine and Oral Implantology - UIRMI (UPV/EHU-Fundación Eduardo Anitua), Vitoria, Spain. 3. Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica & Universidad de Oviedo, Oviedo, Spain. 4. Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain.
Abstract
BACKGROUND: This study analysed the effectiveness of plasma rich in growth factors (PRGF) in reducing the oxidative stress induced by blue light exposition on retinal pigment epithelial (RPE) cells. METHODS: Blood from six healthy donors was collected to obtain the PRGF. Retinal pigment epithelium (ARPE-19) cells were exposed to blue light. Then, cells were incubated with PRGF or with control for 24 and 48 hours maintaining exposure to blue light. The cytoprotective effect of PRGF on ARPE cells was evaluated by measuring the cell viability, the reactive oxygen species (ROS) production and the expression of different proteins such as heme oxygenase 1 (HO-1), catalase (CAT), superoxide dismutase (SOD-1), apoptosis-inducing factor (AIF), pigment epithelium-derived factor (PEDF) and vascular endothelial growth factor (VEGF). RESULTS: The cell viability increased significantly at 24 and 48 hours after PRGF treatment compared to the control group. ROS synthesis was significantly reduced in PRGF-treated cells with respect to control. Furthermore, the levels of HO-1, SOD-1 and AIF were significantly reduced after PRGF treatment at both times of treatment. However, CAT levels were only significantly reduced after PRGF treatment at 48 hours. The high expression of VEGF by RPE cells exposed to blue light was only counterbalanced in the PRGF group by increasing the expression of PEDF in comparison to the control group. CONCLUSION: The present results show that PRGF treatment reduces the cytotoxic effects induced in RPE cells exposed to an oxidative stress environment. Furthermore, PRGF treatment preserves the mitochondrial activity and cell viability of RPE cells subjected to an oxidative stress.
BACKGROUND: This study analysed the effectiveness of plasma rich in growth factors (PRGF) in reducing the oxidative stress induced by blue light exposition on retinal pigment epithelial (RPE) cells. METHODS: Blood from six healthy donors was collected to obtain the PRGF. Retinal pigment epithelium (ARPE-19) cells were exposed to blue light. Then, cells were incubated with PRGF or with control for 24 and 48 hours maintaining exposure to blue light. The cytoprotective effect of PRGF on ARPE cells was evaluated by measuring the cell viability, the reactive oxygen species (ROS) production and the expression of different proteins such as heme oxygenase 1 (HO-1), catalase (CAT), superoxide dismutase (SOD-1), apoptosis-inducing factor (AIF), pigment epithelium-derived factor (PEDF) and vascular endothelial growth factor (VEGF). RESULTS: The cell viability increased significantly at 24 and 48 hours after PRGF treatment compared to the control group. ROS synthesis was significantly reduced in PRGF-treated cells with respect to control. Furthermore, the levels of HO-1, SOD-1 and AIF were significantly reduced after PRGF treatment at both times of treatment. However, CAT levels were only significantly reduced after PRGF treatment at 48 hours. The high expression of VEGF by RPE cells exposed to blue light was only counterbalanced in the PRGF group by increasing the expression of PEDF in comparison to the control group. CONCLUSION: The present results show that PRGF treatment reduces the cytotoxic effects induced in RPE cells exposed to an oxidative stress environment. Furthermore, PRGF treatment preserves the mitochondrial activity and cell viability of RPE cells subjected to an oxidative stress.
Authors: Eduardo Anitua; Francisco Muruzabal; Ander Pino; Roberto Prado; Mikel Azkargorta; Felix Elortza; Jesús Merayo-Lloves Journal: Int J Mol Sci Date: 2021-11-10 Impact factor: 5.923
Authors: Carlota Suárez-Barrio; Susana Del Olmo-Aguado; Eva García-Pérez; Enol Artime; María de la Fuente; Francisco Muruzabal; Eduardo Anitua; Begoña Baamonde-Arbaiza; Luis Fernández-Vega; Jesús Merayo-Lloves Journal: Int J Mol Sci Date: 2020-10-09 Impact factor: 5.923