Natural products – Page 3

Miniaturized high-throughput conversion of fungal strain collections into chemically characterized extract libraries for antimicrobial discovery

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Scientists developed a fast, automated method called FLECS-96 to screen hundreds of fungal species for antimicrobial compounds in a small 96-well plate format. The method combines fungal culture, chemical extraction, and analysis to identify promising candidates against resistant bacteria like Staphylococcus aureus. The team successfully identified two bioactive compounds from the fungi tested. This innovation could significantly speed up the discovery of new antibiotics to combat antibiotic-resistant infections.

Marine-derived Acremonium strain prioritization using untargeted metabolomics approach for the identification of cytotoxic cyclic depsipeptides

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Researchers discovered five potent anti-cancer compounds from Arctic fungi called Acremonium strains. Using advanced chemical analysis techniques, they identified and tested these cyclic depsipeptides against various cancer cell types. The most active compound showed promising results against breast cancer and melanoma cells with extremely low concentrations needed for effect. These findings suggest Arctic microorganisms could be valuable sources for developing new cancer treatments.

Aspergillus terreus IFM 65899-THP-1 cells interaction triggers production of the natural product butyrolactone Ia, an immune suppressive compound

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Scientists discovered that when a dangerous fungus called Aspergillus terreus is grown together with immune cells, it produces a special compound called butyrolactone Ia that helps it hide from the body’s defense system. This compound works by reducing inflammatory signals that immune cells use to fight the fungus. The research shows that direct contact between the fungus and immune cells is needed to trigger this protective compound production, suggesting the fungus responds directly to the threat of immune attack.

Activation of Secondary Metabolism and Protease Activity Mechanisms in the Black Koji Mold Aspergillus luchuensis through Coculture with Animal Cells

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Researchers found that growing koji mold (Aspergillus luchuensis) alongside mouse immune cells in the laboratory significantly increases the production of valuable bioactive compounds. The mold releases enzymes called proteases that break down proteins from the animal cells, which the fungus then uses as building blocks to create medicinal compounds. This discovery shows that coculturing microorganisms with animal cells is an effective strategy to unlock hidden chemical production capabilities in fungi, which could lead to new medicines and useful compounds.

Optimization of triterpenoids biosynthesis in Athelia termitophila as a source of natural products

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Researchers optimized growing conditions for a fungus found in termite nests to dramatically increase production of triterpenoids, naturally-occurring compounds with potent health benefits. Using statistical methods to test different nutrients and conditions, they nearly doubled triterpenoid production and mycelial biomass. These findings could make triterpenoid-based medicines and supplements more affordable and widely available by improving natural production methods.

New bioactive secondary metabolites from fungi: 2024

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Scientists discovered 907 new compounds from fungi in 2024, with most being terpenoids and polyketides that show promise as medicines. These fungal compounds demonstrate strong activity against bacteria, fungi, and inflammation, with some showing potential against cancer and diabetes. The research uses advanced techniques like genome mining and metabolomics to find these compounds more efficiently. This accelerating discovery rate suggests fungi could be a major source for developing new drugs to treat various diseases.

Identification of a Biosynthetic Gene Cluster for the Production of the Blue-Green Pigment Xylindein by the Fungus Chlorociboria aeruginascens

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Scientists discovered the genetic instructions that allow certain fungi to produce xylindein, a beautiful blue-green pigment found in stained wood. By analyzing fungal genomes and studying gene activity, they identified nine genes working together to create this valuable compound, which has uses in textiles and electronics. While attempts to produce xylindein in laboratory yeasts were unsuccessful, their work successfully produced a related pigment and opens new pathways for understanding xylindein production.

Comment on Subhadra et al. Significant Broad-Spectrum Antiviral Activity of Bi121 against Different Variants of SARS-CoV-2

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This is a scientific critique of a recent study claiming that a plant extract called Bi121 has antiviral properties against SARS-CoV-2. The author raises important concerns about how the plant material was prepared and characterized, noting that the chemical fingerprint appears suspiciously identical to a previously published extract, and that the identification of the active ingredient relies on incomplete evidence. The critique calls for more rigorous scientific methods to verify the original study’s findings.

From Mushrooms to Molecules: Exploring Depsidones in Ganoderma lucidum for Antioxidant and Anticancer Applications

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This research examined reishi mushroom (Ganoderma lucidum), a traditional medicinal fungus, to find rare compounds called depsidones with potential cancer-fighting properties. Scientists extracted these compounds using different solvents and tested them against four types of cancer cells (liver, colon, breast, and lung cancer), finding that they successfully killed cancer cells while being safe to normal cells. Using advanced chemical analysis and computer modeling, they identified nine new depsidone compounds in reishi and showed how these compounds could bind to cancer-related proteins to stop tumor growth.

Mycochemistry, antioxidant activity and anticancer potentiality of ethyl acetate extract of Daldinia eschscholtzii against A549 lung cancer cell line

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Researchers studied a wild fungus called Daldinia eschscholtzii to see if it could fight lung cancer. They found that an extract from this fungus contained 28 different beneficial compounds and was effective at killing cancer cells by triggering a process called apoptosis (programmed cell death). The treatment also reduced the cancer cells’ ability to spread, and it appeared safe for normal, healthy cells. Several compounds in the extract showed promise as potential anti-cancer drugs.

Research Keyword: Natural products