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Corynoxine B is an oxindole alkaloid isolated from Uncaria rhynchophylla (Miq.) Jacks (Gouteng in Chinese); a Beclin-1-dependent autophagy inducer. IC50 value:Target: Autophagy inducerin vitro: Corynoxine B, a natural autophagy inducer, restores the deficient cytosolic translocation of HMGB1 and autophagy in cells overexpressing SNCA, which may be attributed to its ability to block SNCA-HMGB1 interaction [1].in vivo: Corynoxine B exhibited prolongation of the thiopental-induced hypnosis on oral administration in mice [2].

[1]. Song JX, et al. HMGB1 is involved in autophagy inhibition caused by SNCA/α-synuclein overexpression: a process modulated by the natural autophagy inducer corynoxine B. Autophagy. 2014 Jan;10(1):144-54. [2]. Sakakibara I, et al. Effect of oxindole alkaloids from the hooks of Uncaria macrophylla on thiopental-induced hypnosis. Phytomedicine. 1998 Apr;5(2):83-6.

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