GoKawiilMIT researchers develop mRNA adjuvant that boosts T-cell response against tumors
MIT scientists created a new vaccine adjuvant made of mRNA encoding two genes that push immune cells into a more active state via specific signaling pathways. Delivered in lipid nanoparticles in mouse models of bladder, colon, lung and skin cancers, the adjuvant slowed or eliminated tumors even without a cancer-specific vaccine, and worked even better alongside one or with checkpoint inhibitor drugs.
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Solid tumors often create hostile microenvironments that block T cells, limiting the effectiveness of many current immunotherapies. An adjuvant that reshapes that environment to be more T-cell friendly could meaningfully improve outcomes for existing cancer treatments and vaccines, and the same technology showed it could sharply amplify immune responses to flu and covid vaccines, hinting at broader applications beyond oncology.
- The mRNA adjuvant encodes two genes that activate immune cells through key signaling pathways.
- In mice, it shrank or eliminated tumors across multiple cancer types, with stronger effects alongside cancer vaccines or checkpoint inhibitors.
- The same adjuvant boosted T-cell response to flu and covid vaccines by 10 to 15 times in early tests.
The Breakthrough by Charles Graeber (book) — If this mRNA adjuvant research has you curious about how T cells became cancer's newest enemy, Charles Graeber's The Breakthrough tells the story of immunotherapy's rise through the scientists and patients behind it. It's an accessible narrative that gives real context to checkpoint inhibitors and the immune-activation ideas driving studies like this one.
See The Breakthrough by Charles Graeber (book) on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: technologyreview.com — Anne Trafton, 2026-08-25
Published there as: “Amping up T cells to target cancer”
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