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Related Concept Videos

Antifungal Agents01:15

Antifungal Agents

Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
Fungal Phylum Basidiomycota01:26

Fungal Phylum Basidiomycota

Basidiomycota is a diverse phylum of fungi that includes ecologically significant decomposers such as white rot fungi, symbionts like mycorrhizal fungi, plant pathogens such as rusts and smuts, and edible species like Agaricus bisporus (the common button mushroom). These fungi play crucial roles in nutrient cycling, symbiotic relationships, and even human health. Their defining feature is the basidium, a microscopic club-shaped structure responsible for producing basidiospores.Fruiting Bodies...
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Fungal Group Zygomycota

Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...

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Isolation and Purification of Fungal &#946;-Glucan as an Immunotherapy Strategy for Glioblastoma
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A new ganoderic acid from Ganoderma lucidum mycelia.

Jia-Le Wang1, Ying-Bo Li, Ru-Ming Liu

  • 1Key Laboratory of Microbial Metabolism, Ministry of Education, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai, China.

Journal of Asian Natural Products Research
|August 14, 2010
PubMed
Summary

Researchers discovered a new ganoderic acid, 7-O-ethyl ganoderic acid O, from Ganoderma lucidum. This compound, featuring a rare ethoxyl group, was evaluated for its potential anticancer effects on human cancer cell lines.

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Area of Science:

  • Natural Product Chemistry
  • Medicinal Chemistry
  • Pharmacology

Background:

  • Ganoderma lucidum (Reishi mushroom) is a traditional medicinal fungus.
  • Ganoderic acids (GAs) are bioactive triterpenoids found in G. lucidum with diverse pharmacological properties.
  • Investigating novel compounds from G. lucidum is crucial for discovering new therapeutic agents.

Purpose of the Study:

  • To isolate and characterize new ganoderic acids from fermented Ganoderma lucidum mycelia.
  • To elucidate the chemical structure of novel compounds using advanced spectroscopic techniques.
  • To evaluate the cytotoxic activity of the isolated compounds against human cancer cell lines.

Main Methods:

  • Fermentation of Ganoderma lucidum mycelia.
  • Isolation and purification of compounds using chromatographic techniques.
  • Structure elucidation via High-Resolution Mass Spectrometry (HR-MS), Infrared (IR), Ultraviolet (UV), and Nuclear Magnetic Resonance (NMR) spectroscopy (1D and 2D).
  • Cytotoxicity assays against 95D and HeLa human cancer cell lines.

Main Results:

  • A new ganoderic acid, 7-O-ethyl ganoderic acid O (GA-O), was isolated and identified.
  • Two known compounds, GA-T and GA-Me, were also purified.
  • The novel GA-O possesses a unique ethoxyl group at the C-7 position of its triterpenoid structure.
  • Preliminary evaluation of GA-O's cytotoxicity against 95D and HeLa cancer cell lines was performed.

Conclusions:

  • A new ethoxyl-containing ganoderic acid, GA-O, was successfully isolated from Ganoderma lucidum.
  • The structural elucidation confirmed the unique chemical features of GA-O.
  • Further research into GA-O's biological activities, particularly its anticancer potential, is warranted.