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Updated: May 7, 2026
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High-resolution Tandem Mass Spectrometry for Studying Chemical Constituents of Gynura bicolor DC
Published on: February 2, 2024
[Anti-complementary constituents of Pogostemon cablin]
Shu-Nan Ruan1, Yan Lu, Dao-Feng Chen
1Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai 201203, China. 10211030038@fudan.edu.cn
Summary
This study isolated 18 compounds from Pogostemon cablin, revealing potent anti-complementary activities in flavonoids and oleanic acid against both classical and alternative complement pathways.
Area of Science:
- Phytochemistry and Natural Products Chemistry
- Immunology and Complement System Research
- Medicinal Plant Chemistry
Context:
- Pogostemon cablin is a medicinal plant with potential immunomodulatory properties.
- The complement system plays a crucial role in innate immunity and inflammatory responses.
- Understanding the active compounds and their mechanisms is vital for developing new therapeutic agents.
Purpose:
- To isolate and identify compounds from Pogostemon cablin with anti-complementary activity.
- To evaluate the in vitro anti-complementary effects of these compounds on the classical and alternative pathways.
- To investigate the molecular targets of potent anti-complementary constituents within the complement cascade.
Summary:
- Silica gel, Sephadex LH-20, and reversed-phase chromatography yielded 18 compounds from Pogostemon cablin, including 15 flavonoids, one triterpenoid (oleanic acid), and two phenolic acids.
- Compounds 3, 7, 10, 12, and 16 demonstrated significant anti-complementary activity against both the classical and alternative pathways, with specific concentration ranges provided.
- Compound 7 was found to interact with complement components C1q, C2, C5, and C9, suggesting a mechanism of action within the complement activation cascade.
Impact:
- Identifies novel anti-complementary compounds from Pogostemon cablin, expanding the known phytochemical profile of the genus.
- Provides valuable data on the immunomodulatory potential of specific flavonoids and oleanic acid, relevant for drug discovery.
- Elucidates potential mechanisms of action for anti-complementary compounds, paving the way for targeted therapeutic development.
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