1. Retinal neuroprotective effect of mesenchymal stem cells secretome through modulation of oxidative stress, autophagy, and programmed cell death
- Author
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Usategui Martín, Ricardo, Puertas Neyra, Kevin Louis, Galindo Cabello, Nadia Regina, Hernández Rodríguez, Leticia A, González Pérez, Fernando, Rodríguez Cabello, José Carlos, González Sarmiento, Rogelio, Pastor Jimeno, José Carlos, Fernández Bueno, Iván, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Junta de Castilla y León, Centro en Red de Medicina regenerativa y Terapia celular de Castilla y León, and Fundación Carolina
- Subjects
Apoptosis ,Mesenchymal Stem Cells ,Antioxidants ,Oxidative Stress ,Neuroprotective Agents ,Mesenchymal stem cells secretome ,32 Ciencias Médicas ,Retinal ,Autophagy ,Humans ,Retinal neuroprotective effect ,33 Ciencias Tecnológicas ,Secretome - Abstract
Producción Científica, Purpose: Degenerative mechanisms of retinal neurodegenerative diseases (RND) share common cellular and molecular signalization pathways. Curative treatment does not exist and cell-based therapy, through the paracrine properties of mesenchymal stem cells (MSC), is a potential unspecific treatment for RND. This study aimed to evaluate the neuroprotective capability of human bone marrow (bm) MSC secretome and its potential to modulate retinal responses to neurodegeneration. Methods: An in vitro model of spontaneous retinal neurodegeneration was used to compare three days of monocultured neuroretina (NR), NR cocultured with bmMSC, and NR cultured with bmMSC secretome. We evaluated retinal morphology markers (Lectin peanut agglutinin, rhodopsin, protein kinase C α isoform, neuronal-specific nuclear protein, glial fibrillary acidic protein, TdT-mediated dUTP nick-end labeling, and vimentin) and proteins involved in apoptosis (apoptosis-inductor factor, caspase-3), necroptosis (MLKL), and autophagy (p62). Besides, we analyzed the relative mRNA expression through qPCR of genes involved in apoptosis (BAX, BCL2, CASP3, CASP8, CASP9), necroptosis (MLKL, RIPK1, RIPK3), autophagy (ATG7, BCLIN1, LC3B, mTOR, SQSTM1), oxidative stress (COX2, CYBA, CYBB, GPX6, SOD1, TXN2, TXNRD1) and inflammation (IL1, IL6, IL10, TGFb1, TNFa). Results: The bmMSC secretome preserves retinal morphology, limits pro-apoptotic– and pro-necroptotic–related gene and protein expression, modulates autophagy-related genes and proteins, and stimulates the activation of antioxidant-associated genes. Conclusions: The neuroprotective ability of the bmMSC secretome is associated with activation of antioxidant machinery, modulation of autophagy, and inhibition of apoptosis and necroptosis during retinal degeneration. The neuroprotective effect of bmMSC secretomes in the presence/absence of MSC looks similar. Our current results reinforce the hypothesis that the human bmMSC secretome slows retinal neurodegeneration and may be a therapeutic option for treating RND., Gobierno de España (PID2019-110709RB-100, RED2018-102417-T, FPU16/04015, PID2020-114585RA-I00 and PID2020-118860RB-I00), Junta de Castilla y León (VA317P18, Infrared2018-UVA06, and GRS1928/A/19), Interred V España-Portugal POCTEP (0624_2IQBIONEURO_6_E)
- Published
- 2022