We studied the role of JAKs and STAT3 in the growth potential of neural stem cells and the humoral neurotrophic function of neuroglia in modeling β-amyloid-induced neurodegeneration in vitro. It was found that these signaling molecules do not participate in the neural stem cell functioning, and JAKs plays an inhibitory role (realized, however, without STAT3) in the secretion of neurotrophins by glial cells under conditions of their optimal vital activity. The effect of β-amyloid on progenitor cells is accompanied by the appearance of a “negative” effect of STAT3 signaling pathway on their proliferative activity. At the same time, JAKs and STAT3 during neurodegeneration stimulate specialization/differentiation of neural stem cells and production of growth factors by neuroglial cells. These results indicate the possibility of stimulating proliferation of neural stem cells coupled with their differentiation by using selective STAT3 inhibitors.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 173, No. 4, pp. 426-430, April, 2022
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Zyuz’kov, G.N., Miroshnichenko, L.A., Kotlovskaya, L.Y. et al. The Role of JAKs and STAT3 in Regulation of Regenerative-Competent Cells of the Nervous Tissue in β-Amyloid-Induced Neurodegeneration. Bull Exp Biol Med 173, 419–423 (2022). https://doi.org/10.1007/s10517-022-05560-w
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DOI: https://doi.org/10.1007/s10517-022-05560-w