Pharmacological Activities of Timosaponins in Cancer Therapeutics

Timosaponins, a group of steroidal saponins predominantly isolated from Anemarrhena asphodeloides, have emerged as multifaceted agents in the fight against cancer. Among these, Timosaponin-AIII has attracted significant interest owing to its selective cytotoxicity towards tumour cells while sparing normal tissues. Mechanistically, timosaponins orchestrate a spectrum of anticancer actions: they induce apoptosis via mitochondrial disruption and endoplasmic reticulum stress, provoke cell-cycle arrest at G2/M through DNA damage signalling, modulate autophagy, and inhibit proliferative pathways such as PI3K/Akt and mTOR. Furthermore, they suppress tumour invasion and metastasis by targeting cytoskeletal dynamics and integrin/FAK signalling, and they exert anti-angiogenic and anti-inflammatory effects within the tumour microenvironment. Despite promising preclinical outcomes, the inherent hydrophobicity and limited bioavailability of timosaponins have prompted the development of advanced delivery systems to enhance their pharmacokinetic profiles. Collectively, these pharmacological activities underscore the potential of timosaponins as lead compounds for novel anticancer therapeutics.

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Pharmacological Activities of Timosaponins in Cancer Therapeutics publication trend

The graph below shows the total number of articles in pharmacological activities of timosaponins in cancer therapeutics across all publications each year (not limited to Nature Index journals).

Technical terms

Steroidal saponin: A class of glycosides combining a steroidal aglycone with sugar moieties, noted for membrane-active and bioactive properties.

Apoptosis: Programmed cell death characterised by cell shrinkage, chromatin condensation, and activation of caspases.

Autophagy: A regulated process of lysosomal degradation of cytoplasmic components, which can either protect or promote cancer cell death.

Angiogenesis: The formation of new blood vessels from pre-existing vasculature, essential for tumour growth and metastasis.

Metastasis: The spread of cancer cells from the primary tumour to distant sites, involving invasion, intravasation, and colonisation.

References

1. The Potential Role of Timosaponin-AIII in Cancer Prevention and Treatment. Molecules (2023).
2. Pharmacological Activity, Pharmacokinetics, and Toxicity of Timosaponin AIII, a Natural Product Isolated From Anemarrhena asphodeloides Bunge: A Review. Frontiers in Pharmacology (2020).
3. Timosaponin AIII Is Preferentially Cytotoxic to Tumor Cells through Inhibition of mTOR and Induction of ER Stress. PLOS ONE (2009).
4. Timosaponin AIII Induces G2/M Arrest and Apoptosis in Breast Cancer by Activating the ATM/Chk2 and p38 MAPK Signaling Pathways. Frontiers in Pharmacology (2021).
5. Potential Antimetastatic Effect of Timosaponin AIII against Human Osteosarcoma Cells through Regulating the Integrin/FAK/Cofilin Axis. Pharmaceuticals (2021).