Quinones from Rubia manjith and their antitumor activity

Area of Science:

• Phytochemistry
• Pharmacology
• Natural Products Chemistry

Background:

• Rubia plants are recognized medicinal resources with diverse biological activities.
• R. manjith, used in traditional Chinese medicine, contains quinone derivatives but lacks chemical component research.
• The study aims to identify potential anti-tumor agents from R. manjith's quinone constituents.

Purpose of the Study:

• To isolate and identify quinone constituents from R. manjith roots and rhizomes.
• To evaluate the cytotoxic activities of isolated compounds against colorectal cancer cell lines.
• To elucidate the anti-tumor mechanisms of active compounds using network pharmacology and molecular docking.

Main Methods:

• Isolation and structural elucidation of quinone compounds from R. manjith.
• In vitro cytotoxic assays against colorectal cancer cell lines.
• Network pharmacology analysis and molecular docking studies.

Main Results:

• Four new anthraquinones (1-4) and thirty-one known quinones (5-35) were isolated.
• Compound 6 demonstrated significant antiproliferative effects on colorectal cancer cell lines.
• Potential anti-tumor mechanisms of compound 6 were investigated.

Conclusions:

• R. manjith is a rich source of quinone derivatives with potential anti-cancer properties.
• Compound 6 is a promising candidate for further development as an anti-tumor agent.
• The study provides insights into the molecular mechanisms of R. manjith's anti-tumor activity.