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2017 ; 63
(3-4
): 320-332
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IL-17 Exerts Anti-Apoptotic Effect via miR-155-5p Downregulation in Experimental
Autoimmune Encephalomyelitis
#MMPMID29063445
Ksiazek-Winiarek D
; Szpakowski P
; Turniak M
; Szemraj J
; Glabinski A
J Mol Neurosci
2017[Dec]; 63
(3-4
): 320-332
PMID29063445
show ga
Multiple sclerosis is an autoimmune, neurodegenerative disease, affecting mostly
young adults and resulting in progressive disability. It is a multifactorial
disorder, with important involvement of both cellular and epigenetic components.
Among the epigenetic factors, microRNAs are currently intensively investigated in
the context of multiple sclerosis. It has been shown that their biogenesis and
function may be regulated by various cytokines. IL-17, a hallmark cytokine of
Th17 cells, has been thought to function predominantly as a pro-inflammatory
factor, leading to increased disease symptoms. However, there are several studies
indicating its protective role during inflammatory process. In this work, we have
assessed the impact of high-dose IL-17 administration on microRNAs' expression
profile during the preclinical stage of EAE. For selected microRNA, we have
performed computational analysis of its potential target mRNAs and cellular
pathways. Based on results obtained from in silico analysis, we have chosen genes
from neurotrophin signaling pathway for further experiments-BDNF, HRAS, and BCL2.
Results obtained in this study suggested that high dose of IL-17 exerts
protective activity via miR-155-5p downregulation. Increased expression of all
studied genes, especially BCL2, indicated a potential anti-apoptotic function of
IL-17 during the preclinical phase of EAE.