3'-Hydroxypterostilbene (3'-HPT), a natural pterostilbene analogue, effectively inhibits the growth of human colon cancer cells with IC50s of 9.0, 40.2, and 70.9 μM for COLO 205, HCT-116, and HT-29 cells, respectively, by inducing apoptosis and autophagy. 3'-Hydroxypterostilbene inhibits the p38MAPK , and PI3K/Akt/mTOR/p70S6K pathways and activates the ERK1/2, JNK1/2 MAPK pathways[1].

Anticancer agent 160 (Compound 6), a natural product extracted from Parthenium hysterophorus, exhibits cytotoxicity against HCT-116 cells with an IC50 of 5.0 μM [1].

Germanicol induces selective growth inhibitory effects in human colon HCT-116 and HT29 cancer cells through induction of apoptosis, cell cycle arrest and inhibition of cell migration. Germanicol may have anti-inflammatory effects .

Flavokawain C is a melanogenesis inhibitor, it inhibited melanogenesis with IC50 values of 6.9 μM. Flavokawain C has anti-tumor activity, it inhibited cell cycle and promoted apoptosis, associated with endoplasmic reticulum stress and regulation of MAPKs and Akt signaling pathways in HCT 116 human colon carcinoma cells.

1. β,β-Dimethylacrylshikonin (Dimethylacrylshikonin) is a promising agent for developing an improved strategy for radiotherapy against tumors. (a) Injection of Dimethylacrylshikonin combined with IR treatment significantly suppressed tumor growth of the HCT-116 xenograft. (b) Dimethylacrylshikonin significantly suppressed the growth of H(22) transplantable hepatoma, and induced the activation of caspase-3 . (c) Dimethylacrylshikonin inhibited growth of gastric cancer SGC-791 cells by inducing ERK signaling pathway. 2. Dimethylacrylshikonin inhibits the proliferation of MCF-7 cells in vitro by inducing apoptosis through the downregulation of Bcl-2, upregulation of Bax and partial inactivation of the NF-κB pathway.

Brefeldin A (Cyanein) belongs to the class of macrolide antibiotics and is an ATPase inhibitor (IC50=0.2 μM). Brefeldin A can induce tumor cell differentiation and apoptosis, and also possesses autophagy inhibitory activity.

3-O-acetyloleanolic acid dose-dependently inhibited the viability of HCT-116 cells. Apoptosis was characterized by detection of cell surface annexin V and sub-G1 apoptotic cell populations.