Abstract：
:In the central nervous system (CNS), senescent astrocytes have been associated with neurodegeneration. Senescent cells secrete a complex mixture of pro-inflammatory factors, which are collectively called Senescence Associated Secretory Phenotype (SASP). The SASP components can vary depending on the cell type, senescence inducer and time. The SASP has been mainly studied in fibroblasts and epithelial cells, but little is known in the context of the CNS. Here, the SASP profile in senescent astrocytes isolated from Wistar newborn rats induced to senescence by oxidative stress or by proteasome inhibition was analyzed. Senescent astrocytes secreted predominantly chemokines and IL-1α, but no IL-6. The effect of the anti-inflammatory drugs, sulforaphane (SFN) and dehydroepiandrosterone (DHEA), on the SASP profile was evaluated. Our results showed that SFN and DHEA decreased IL-1α secretion while increasing IL-10, thus modifying the SASP to a less anti-inflammatory profile. Primary neurons were subjected to the conditioned media obtained from drug-treated senescent astrocytes, and their mitochondrial membrane potential was evaluated.
journal_name
Biogerontologyjournal_title
Biogerontologyauthors
Maciel-Barón LÁ,Morales-Rosales SL,Silva-Palacios A,Rodríguez-Barrera RH,García-Álvarez JA,Luna-López A,Pérez VI,Torres C,Königsberg Mdoi
10.1007/s10522-018-9767-3subject
Has Abstractpub_date
2018-10-01 00:00:00pages
415-433issue
5eissn
1389-5729issn
1573-6768pii
10.1007/s10522-018-9767-3journal_volume
19pub_type
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