Role of astrocyte senescence regulated by the non- canonical autophagy in the neuroinflammation associated to cerebral malaria.
Brain Behav Immun
; 117: 20-35, 2024 03.
Article
em En
| MEDLINE
| ID: mdl-38157948
ABSTRACT
BACKGROUND:
Cerebral malaria (CM) is a fatal neuroinflammatory syndrome caused (in humans) by the protozoa Plasmodium (P.) falciparum. Glial cell activation is one of the mechanisms that contributes to neuroinflammation in CM.RESULT:
By studying a mouse model of CM (caused by P. berghei ANKA), we describe that the induction of autophagy promoted p21-dependent senescence in astrocytes and that CXCL-10 was part of the senescence-associated secretory phenotype. Furthermore, p21 expression was observed in post-mortem brain and peripheral blood samples from patients with CM. Lastly, we found that the depletion of senescent astrocytes with senolytic drugs abrogated inflammation and protected mice from CM.CONCLUSION:
Our data provide evidence for a novel mechanism through which astrocytes could be involved in the neuropathophysiology of CM. p21 gene expression in blood cell and an elevated plasma CXCL-10 concentration could be valuable biomarkers of CM in humans. In the end, we believe senolytic drugs shall open up new avenues to develop newer treatment options.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Malária Cerebral
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article