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Blocking Smad2 signalling with loganin attenuates SW10 cell cycle arrest induced by TNF-?.

ABSTRACT: The activity of Schwann cells (SWCs) is very important in trauma-induced nerve repair, and tumour necrosis factor-? (TNF-?) produced during tissue injury inhibits the viability of SWCs, which delays the repair of peripheral nerves. Loganin is an iridoid glycoside that has been shown to alleviate a variety of cytotoxic effects. In the current study, we evaluated the potential efficacy and the mechanism of action of loganin in TNF-?-induced cytotoxicity in SW10 cells. The experimental results indicated that loganin blocked TNF-?-mediated Smad2 activation, downregulated the expression of the G1 phase cell cycle inhibitor p15IN4KB, and upregulated the expression of the G1 phase cell cycle activator cyclin D1-CDK4/6, which upregulated E2F-1-dependent survivin expression and relieved TNF-?-induced apoptosis in SW10 cells. The protective effect of loganin on SWCs has potential medicinal value in the promotion of peripheral nerve repair and is significant for studies in the field of tissue regeneration.

SUBMITTER: Chao G 

PROVIDER: S-EPMC5419568 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Blocking Smad2 signalling with loganin attenuates SW10 cell cycle arrest induced by TNF-α.

Chao Gao G   Tian Xiaoning X   Zhang Wentao W   Ou Xuehai X   Cong Fei F   Song Tao T  

PloS one 20170505 5

The activity of Schwann cells (SWCs) is very important in trauma-induced nerve repair, and tumour necrosis factor-α (TNF-α) produced during tissue injury inhibits the viability of SWCs, which delays the repair of peripheral nerves. Loganin is an iridoid glycoside that has been shown to alleviate a variety of cytotoxic effects. In the current study, we evaluated the potential efficacy and the mechanism of action of loganin in TNF-α-induced cytotoxicity in SW10 cells. The experimental results indi  ...[more]

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