Anti-cancer activity of sustained release capsaicin formulations

Area of Science:

• Phytochemistry
• Pharmacology
• Oncology

Background:

• Capsaicin, a vanilloid phytochemical from chili peppers, exhibits significant anticancer properties, inhibiting cancer growth, angiogenesis, and metastasis.
• Clinical use of capsaicin is limited by poor bioavailability, low aqueous solubility, and adverse gastrointestinal side effects.

Purpose of the Study:

• To review the physicochemical properties, bioavailability, and anticancer activity of capsaicin encapsulated in sustained-release drug delivery systems.
• To explore the potential of these formulations as novel cancer chemotherapies and diagnostic agents.

Main Methods:

• Review of existing literature on capsaicin and its sustained-release formulations.
• Analysis of physicochemical properties, bioavailability data, and in vitro/in vivo anticancer efficacy studies.

Main Results:

• Sustained-release capsaicin formulations demonstrate enhanced solubility, stability, and bioavailability compared to free capsaicin.
• Encapsulation effectively minimizes capsaicin-associated adverse effects.
• These formulations exhibit potent growth-suppressive activity against various human cancers.

Conclusions:

• Sustained-release capsaicin delivery systems offer a viable strategy to overcome the limitations of free capsaicin for cancer therapy.
• These advanced formulations hold potential as novel chemotherapies, diagnostic probes, and chemosensitization agents for human cancers.