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For years, scientists have focused on stopping or clearing these clumps, but the new research suggests a different approach may be more effective\u2014encouraging the proteins to behave normally rather than blocking them entirely. <\/p>\n
Ram Bishnoi, MD, MBA, associate professor of psychiatry and behavioral neurosciences, said the study provides \u201ca concrete, testable mechanism\u201d for how this might work. <\/p>\n
“Tubulin, the building block of microtubules, acts as a molecular switch that determines whether tau and \u03b1-synuclein [a brain protein] become toxic or stay useful,” Bishnoi told Newsweek.<\/p>\n
The team found that tubulin interacts with tau and \u03b1-synuclein inside tiny cellular compartments known as condensates\u2014droplets where both healthy and harmful versions of the proteins operate. <\/p>\n
“When tubulin is present, it gets pulled into the condensates where tau and \u03b1-synuclein accumulates, and it competes for binding sites in a way that keeps both these proteins in functional shapes,” Bishnoi said. <\/p>\n
When tubulin is lacking, these structures change in a way that triggers harmful clumping of tau and \u03b1\u2011synuclein.<\/p>\n
Bishnoi added that reducing tubulin levels in cell models led to a sharp increase in harmful protein buildup and visible neuron loss, underscoring its protective role. <\/p>\n
Rather than eliminating condensates\u2014which also play important roles in healthy cells\u2014the findings suggest the key factor is whether tubulin is present. <\/p>\n
\u201cIt’s not the condensate itself that’s good or bad, it’s whether tubulin is in the room,\u201d Bishnoi said. <\/p>\n
This shift in understanding could reshape how neurodegenerative diseases<\/a> are treated. Instead of trying to remove harmful protein deposits altogether, scientists may be able to steer them toward beneficial behavior. <\/p>\n The idea that tau and \u03b1-synuclein have normal roles in the brain is well established, and concerns about disrupting healthy function by blocking them entirely are not new. But Bishnoi said this study strengthens the case for a more balanced approach. <\/p>\n \u201cInstead of asking how do we dissolve the tau aggregates, it asks how do we keep tubulin levels high enough to win the competition,” he said. Essentially, the question becomes how do we keep tubulin levels high enough to prevent them forming in the first place.<\/p>\n The findings also align with clinical observations that microtubule networks decline early in Alzheimer\u2019s disease, suggesting this could be an upstream target for intervention. <\/p>\n However, the findings are based on laboratory and cell-model experiments and will need to be confirmed in animal models and human studies. <\/p>\n \u201cMicrotubule-targeting drugs are also notoriously hard to develop safely since microtubules are essential cellular structures all over the body,\u201d Bishnoi said. \u201cAnimal studies are the obvious next step.\u201d <\/p>\n Even so, he said the work provides a clearer direction for future research. <\/p>\n “This is a mechanistic insight that strengthens the case for a ‘redirect rather than demolish’ strategy,” he said, adding that tubulin should be seen as a potential lever\u2014not a proven treatment. <\/p>\n Reference<\/p>\n Lucas, L., Tsoi, P.S., Quan, M.D., Choi, K.-J., Ferreon, J.C. and Ferreon, A.C.M. (2026). Tubulin transforms Tau and \u03b1-synuclein condensates from pathological to physiological. Nature Communications. [online] doi:https:\/\/doi.org\/10.1038\/s41467-026-69618-3.<\/a><\/p>\n \u200c<\/p>\n","protected":false},"excerpt":{"rendered":"Scientists have identified a protein that may help stop the brain changes linked to Alzheimer\u2019s and Parkinson\u2019s disease.…\n","protected":false},"author":2,"featured_media":723318,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[6053,3615,97,766],"class_list":["post-723317","post","type-post","status-publish","format-standard","has-post-thumbnail","category-health","tag-alzheimers","tag-brain","tag-health","tag-parkinsons-disease"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/723317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=723317"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/723317\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/723318"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=723317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=723317"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=723317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}