Bringing consideration to probably the most difficult mind ailments at the moment, Alzheimer’s continues to have an effect on hundreds of thousands of individuals worldwide with reminiscence loss, confusion, and regular psychological decline. What makes this illness particularly dangerous is the buildup of dangerous proteins within the mind, known as amyloid-beta (Aβ), which group collectively and injury nerve cells. Though there are medicines that assist handle some signs, none can totally cease the illness from getting worse. Due to this, scientists are looking for new methods to deal with Alzheimer’s, and one promising path entails pure substances present in crops and fungi.
Lichen, a symbiotic organism fashioned from fungi and algae, function terrestrial pioneer species and environmental indicators in colonizating terrestrial environments. They play important ecological roles, notably in excessive high-altitude areas, such because the Qinghai–Tibetan Plateau (Himalayan Plateau) and different alpine zones worldwide. To outlive harsh situations, lichen have developed strong secondary metabolic pathways, producing a various array of structurally distinctive and secure chemical compounds. These pure merchandise signify an enormous and underexplored reservoir for drug discovery.
Coming from a workforce at The Hong Kong College of Science and Know-how (HKUST), led by Dr. Meixia Yang and Professor Karl Tsim, has uncovered a promising Alzheimer’s-related discovering. Their research demonstrates that gyrophoric acid—a pure compound derived from lichen—can each inhibit the formation of dangerous protein clumps (Aβ aggregates) within the mind and disaggregate current ones. This work has been revealed within the Worldwide Journal of Molecular Sciences.
Combining pc simulations with actual lab exams, the researchers confirmed how gyrophoric acid works. The compound sticks to particular elements of the dangerous Aβ aggregates and prevents it from becoming the sticky kind that builds up in Alzheimer’s. As an alternative of utilizing sturdy bonds like some medication do, gyrophoric acid makes use of gentler connections—primarily based mostly on hydrophobic forces, that are interactions the place water-repelling areas of molecules come collectively—to carry the protein in a innocent kind. In lab exams, gyrophoric acid began breaking down these Aβ aggregates inside just a few hours, and by the top of the day, many of the massive aggregates had been gone.
Professor Tsim defined, “Our research demonstrates that gyrophoric acid interacts with key hydrophobic residues of Aβ by way of a conformational choice mechanism.” These hydrophobic residues are the water-repelling elements of the protein. The conformational choice mechanism implies that the compound works by locking the protein right into a protected form earlier than it turns dangerous. “This enables it to disrupt each early and late-stage fibril formation.” Fibrils are the dangerous, thread-like constructions that kind when the protein clumps collectively. Utilizing a dye that glows within the presence of those protein clumps, together with highly effective confocal microscopes—particular instruments that enable researchers to see tremendous particulars inside cells—the workforce watched the remedy work in actual time.
Fascinatingly, gyrophoric acid doesn’t simply cease Aβ from clumping—it additionally breaks aside the clumps which have already fashioned. This can be a uncommon and useful trait, particularly since many Alzheimer’s remedies battle to cope with these older, sticky protein kinds. As a result of the compound connects in a softer and extra focused approach, it may additionally trigger fewer negative effects in comparison with stronger medication that may follow the unsuitable locations within the physique.
Exploring its security and usefulness, the workforce additionally checked out how the physique would possibly take up and deal with gyrophoric acid. They discovered it follows a number of key guidelines for drug-likeness, a time period meaning how effectively a compound would possibly work as a medication contained in the human physique. One such rule is Lipinski’s rule of 5, a suggestion utilized in drug growth to foretell if a compound could be absorbed when taken by mouth. Whereas gyrophoric acid may not simply cross into the mind because of its molecular construction, its skill to strongly maintain onto its goal protein may assist steadiness that out. “Gyrophoric acid demonstrates a uncommon mixture of sturdy binding, metabolic stability, and low cytotoxicity,” mentioned Dr. Yang. Metabolic stability refers to how lengthy a substance stays lively within the physique with out being damaged down, and low cytotoxicity means it’s not dangerous to wholesome cells.
Wanting on the greater image, this analysis brings consideration to lichens that survive in robust environments by producing distinctive and secure chemical compounds. Gyrophoric acid is considered one of these pure substances, and the scientists consider different related compounds in lichens might be simply as useful. Looking out by way of completely different lichens may uncover much more pure chemical compounds that may assist struggle Alzheimer’s.
Shifting focus to future prospects, the researchers say extra exams are wanted in residing techniques, referred to as in vivo testing, to see how effectively gyrophoric acid works and the way it may be delivered successfully to the mind. “The pure chemodiversity present in lichens stays largely untapped,” mentioned Dr. Yang. Chemodiversity refers back to the number of chemical constructions present in nature. “We consider that is solely the start. Derivatives of gyrophoric acid or related constructions could also be optimized additional for scientific use.”
Working towards a illness anticipated to change into way more widespread within the coming many years, this research highlights a promising new possibility. Gyrophoric acid not solely stops the formation of dangerous protein buildup within the mind, but additionally clears away what’s already there. Paired with its security and potential for future growth, it provides hope within the ongoing effort to seek out higher options for treating Alzheimer’s.
Journal Reference
Yang M., Hu H., Gao J., Lai Q.W.S., Eshboev F., Leung Ok.W., Dong T.T., Xu Q., Tsim Ok.W.Ok. “The Identification of Gyrophoric Acid, a Phytochemical Derived from Lichen, as a Potent Inhibitor for Aggregation of Amyloid Beta Peptide: In Silico and Biochemical Analysis.” Worldwide Journal of Molecular Sciences, 2025; 26(17): 8500. DOI: https://doi.org/10.3390/ijms26178500
In regards to the Authors
Prof. Karl Wah Keung Tsim is a Chair Professor of Division of Life Science, and the Director of Middle for Chinese language Medication R & D on the college. His present analysis focus is on learning geographical authenticity of Chinese language medicinal herbs and mechanisms of Chinese language medicines by molecular and genetic methods. He has revealed over 600 scientific papers and serves as editors for worldwide scientific journals. He additionally serves as an adviser/guide/member to numerous organisations, each nationally and internationally, within the standardisation of Chinese language medicines, together with World Well being Group Collaborating Centre for Conventional Medication, and varied advisory our bodies referring to testing and certification of Chinese language medicines of the HKSAR Authorities. He’s additionally an lively entrepreneur and is founding administrators of a number of corporations.
Dr. Meixia Yang is a scientist devoted to unlocking the therapeutic secrets and techniques of nature. As a Analysis Affiliate at The Hong Kong College of Science and Know-how, she leverages her experience in phytochemistry to discover pure medication. After incomes her PhD in 2021 from a joint program of the College of Bern and the Swiss Federal Institute WSL (ETH), she joined HKUST in 2022. Her analysis builds a sustainable pipeline “from lichen sources to drug candidates,” integrating lichen taxonomy, pure merchandise chemistry, artificial biology, and neuropharmacology. She focuses on discovering novel bioactive molecules, utilizing artificial biology to make sure sustainable provide, and elucidating their multi-target mechanisms of motion.
