Natural products – Page 4

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.

Methods for Overcoming Chemoresistance in Head and Neck Squamous Cell Carcinoma: Keeping the Focus on Cancer Stem Cells, a Systematic Review

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Head and neck cancer is often resistant to chemotherapy because of cancer stem cells that survive treatment and cause recurrence. This review examined 31 studies on methods to overcome this resistance, finding that natural products like mushrooms (Ganoderma lucidum), plants (sulforaphane from broccoli, curcumin from turmeric), and synthetic compounds can enhance chemotherapy effectiveness when combined with traditional drugs. These approaches work by targeting the specific pathways that allow cancer stem cells to survive, potentially improving treatment outcomes while reducing required drug doses and side effects.

Clade III Synthases Add Cyclic and Linear Terpenoids to the Psilocybe Metabolome

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Researchers identified four enzymes in magic mushrooms that produce various aromatic compounds called terpenes. These findings show that Psilocybe mushrooms make a much wider variety of bioactive molecules beyond just psilocybin. Understanding these additional compounds could help explain why whole mushrooms may have different effects than pure psilocybin alone.

Microbe Profile: Streptomyces formicae KY5: an ANT-ibiotic factory

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Scientists have discovered a special bacterium called Streptomyces formicae that lives in ant nests and produces powerful antibiotics. This bacterium makes formicamycins, which can kill dangerous bacteria like methicillin-resistant Staphylococcus aureus that resists many common antibiotics. Using advanced genetic tools, researchers can modify this bacterium to unlock hidden antibiotic-producing pathways, potentially leading to new medicines to fight drug-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.

The endophytic fungus Cosmosporella sp. VM-42 from Vinca minor is a source of bioactive compounds with potent activity against drug-resistant bacteria

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Scientists discovered a fungus living inside a medicinal plant called Vinca minor that produces compounds capable of killing drug-resistant bacteria like MRSA. They isolated the main active compound, nectriapyrone, and found it effectively stops the growth of these dangerous bacteria in laboratory tests. The fungus appears to be a promising source of new antibacterial drugs that could help combat the growing problem of antibiotic-resistant infections.

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.

Antifungal effects of metabolites from Arthrinium sp. 2–65 and identification of main active ingredients

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Scientists discovered that a fungus called Arthrinium sp. 2–65, found living inside a wild plant called Thymus mongolicus, produces two special compounds that can kill the fungus responsible for grey mould disease. Grey mould is a major problem for farmers worldwide, damaging crops like tomatoes, grapes, and strawberries. These newly identified compounds were tested and showed excellent effectiveness against the disease, offering a promising natural alternative to chemical pesticides that have become less effective due to resistance and environmental concerns.

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.

Synergistic potential and apoptosis induction of Bunium persicum essential oil and its pure components, cuminaldehyde and γ-terpinene, in combination with fluconazole on Candida albicans isolates: in vitro and in silico evaluation

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Researchers tested how Bunium persicum essential oil and its components work alongside the antifungal drug fluconazole against Candida albicans infections. Cuminaldehyde, a major component of the oil, showed the strongest effects when combined with fluconazole, making infection-causing cells die faster than each substance alone. This combination approach could help overcome drug-resistant fungal infections and offers a promising natural alternative to synthetic drugs alone.

Research Topic: Natural products