Bioactive Pentacyclic Triterpenes Trigger Multiple Signalling Pathways for Selective Apoptosis Leading to Anticancer Efficacy: Recent Updates and Future Perspectives.

Nowadays, discovering an effective and safe anticancer medication is one of the major challenges. Premature death due to the unidirectional toxicity of conventional therapy is common in cancer patients with poor health status. Plants have been used as medicine since prehistoric times, and extensive research on the anticancer properties of various bioactive phytomolecules is ongoing. Pentacyclic triterpenoids are secondary metabolites of plants with well-known cytotoxic and chemopreventive properties established in numerous cancer research studies. The lupane, oleanane, and ursane groups of these triterpenoids have been well-studied in recent decades for their potential antitumor activity. This review delves into the molecular machinery governing plant-derived triterpenes' anticancer efficacy. The highlighted mechanisms are antiproliferative activity, induction of apoptosis through regulation of BCL-2 and BH3 family proteins, modulation of the inflammatory pathway, interference with cell invagination and inhibition of metastasis. Lack of solubility in mostly used biological solvents is the major barrier to the therapeutic progress of these triterpenoids. This review also highlights some probable ways to mitigate this issue with the help of nanotechnology and the modification of their physical forms.

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