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Mechanism of VEGFR-3 promoting proliferation of cerebrospinal fluid-contacting neurons through PI3K/AKT signaling pathway#br# |
HU Qian YAN Haijian▲ |
Department of Emergency, Affiliated Hospital of Guizhou Medical University, Guizhou Province, Guiyang 550000, China |
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Abstract Objective To investigate the effect of vascular endothelial growth factor receptor-3 (VEGFR-3) on the proliferation of cerebrospinal fluid-contacting neurons (CSF-CNs) through PI3K/AKT signaling pathway. Methods CSF-CNs were isolated from ten 3-day-old C57 newborn mice, and divided into four groups: normal control group, empty plasmid control group, VEGFR-3 plasmid group and inhibitor group. The normal control group was without special treatment, empty plasmid control group added empty plasmid, and VEGFR-3 plasmid dilution was added into VEGFR-3 plasmid group, PI3K/AKT inhibitor was added into transfected cells in inhibitor group. The number and diameter of neurospheres were detected after 24 h, and the expression of VEGFR-3, PI3K, AKT, and p-AKT were detected by Western blot. Results The expression of VEGFR-3 in VEGFR-3 plasmid group was higher than that in normal control group and empty plasmid control group (P < 0.05), and the transfection efficiency was the highest after 48 h. Compared with empty plasmid group and inhibitor group, the number and diameter of neurospheres in VEGFR-3 plasmid group increased (P < 0.05), and the expression of PI3K, AKT, and p-AKT in VEGFR-3 plasmid group were higher (P < 0.05). Conclusion VEGFR-3 can promote the proliferation of CSF-CNs by regulating PI3K/AKT signaling pathway.
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