Procyanidin C1 is a natural polyphenol that causes DNA damage, cell cycle arrest, and apoptosis induction. It reduces Bcl-2 protein levels and enhances the expression of BAX, caspase 3, and 9 in cancer cells.

METHODS: PSC27 cells were treated with Procyanidin C1 (5, 10, 25, 50, 100, 400 μM) and senescent PSC27 cell survival was measured by SA-β-Gal staining.
RESULTS Procyanidin C1 exerted an anti-senescent effect on senescent stromal cells starting at a concentration of 50 μM, at which concentration proliferating cells were largely unaffected. [1]
METHODS: Procyanidin C1 (5 and 10 μM) was used in DLD1 and HCT116 cells, and the expression of has-miR-501-3p was detected.
RESULTS Procyanidin C1 inhibited the expression of has-miR-501-3p in CRC cells with increasing concentrations. [4]

METHODS: DLD1 and SW1463 cells were injected into the right axilla of BALB/c nude mice. The nude mice were treated with Procyanidin C1 (20 mg/kg and 40 mg/kg, intraperitoneal injection, once every three days), and the tumor volume and tumor weight were calculated.
METHODS: Procyanidin C1 can inhibit tumor growth and metastasis in CRC, and the has-miR-501-3p/HIGD1A axis is involved in this process. [4]