Spore Sized: The Tiny Lectin Inside a Shaggy Scaly Mushroom

<p><em>Pholiota squarrosa</em> is a familiar woodland mushroom, but its chemistry has made it surprisingly important to modern fungal research.</p><p>This episode explores the species&#39; distinctive dry, heavily scaled appearance, its white-rot lifestyle, and its unusual relationship with weakened trees. The hosts then examine compounds such as <strong>squarrosidine and pinillidine</strong>, which have demonstrated xanthine oxidase inhibition in laboratory research.</p><p>The centerpiece is <strong>PhoSL</strong>, an exceptionally small 40-amino-acid lectin with remarkable specificity for core-fucosylated N-glycans. Researchers have investigated its structure and applications in <strong>cancer glycobiology</strong>, including the study of altered fucosylation and AFP-L3.</p><p>The episode also examines laboratory research into PhoSL and <strong>SARS-CoV-2 spike protein</strong>, while clearly separating experimental findings from claims about medical treatment.</p><p>Finally, the discussion covers the species&#39; status as the type species of <em>Pholiota</em>, its reported gastrointestinal effects, and why this ordinary-looking mushroom continues to attract researchers across mycology, biochemistry and glycobiology.</p><p>Pholiota squarrosa, shaggy scalycap, PhoSL lectin, mushroom lectin, core fucose, glycobiology, cancer research, fungal chemistry, xanthine oxidase, squarrosidine, pinillidine, white rot fungus, mushroom science, mycology, SARS-CoV-2 research, AFP-L3, fungal biology, mycology podcast</p><p>#PholiotaSquarrosa #ShaggyScalycap #PhoSL #Mycology #MushroomScience #Glycobiology #CancerResearch #FungalBiology #Lectin #WhiteRot #FungalChemistry #MushroomResearch</p><p></p>