Antitumour principles from Peganum harmala seeds

Area of Science:

• Pharmacology and Phytochemistry
• Natural Product Chemistry
• Oncology

Background:

• Peganum harmala, a medicinal plant, has historical uses but limited research on its antitumour properties.
• Traditional Moroccan medicine utilizes Peganum harmala seeds for skin and subcutaneous tumors.
• Existing research focuses on antibacterial, antifungal, and antiviral effects, not anticancer activity.

Purpose of the Study:

• To investigate the antineoplastic properties of Peganum harmala seed extracts.
• To evaluate the in vitro and in vivo antitumour activity of Peganum harmala alkaloids.
• To explore the potential of Peganum harmala as a novel anticancer therapy.

Main Methods:

• In vitro testing of varying concentrations (10-120 µg/ml) of Peganum harmala alkaloid extracts on four human tumor cell lines (Med-mek, UCP-Med carcinoma, UCP-Med sarcoma, Sp2/O-Ag14).
• In vivo experiments using the Sp2/O cell line grafted subcutaneously in BALB/c mice.
• Administration of the active alkaloid principle at 50 mg/kg orally for 40 days in mice.

Main Results:

• Peganum harmala alkaloid extracts significantly reduced tumor cell line proliferation in vitro within 24 hours.
• Complete tumor cell death was observed within 48-72 hours, demonstrating high in vitro cytotoxicity.
• Significant antitumoural activity was observed in vivo with oral administration of the active principle.

Conclusions:

• Peganum harmala alkaloids exhibit potent in vitro cytotoxicity against various tumor cell lines.
• The plant's alkaloids possess significant in vivo antitumour activity.
• Peganum harmala alkaloids represent a promising candidate for novel anticancer therapies.