Dynavax Technologies announced publication of a preclinical study demonstrating that inhalation of a TLR9 agonist can stimulate effective immunity against lung tumors and complement the actions of PD-1 blockade to generate durable, systemic anti-tumor immunity. The paper titled Inhaled TLR9 Agonist Renders Lung Tumors Permissive to PD-1 Blockade by Promoting Optimal CD4+ and CD8+ T cell Interplay, by Dynavax scientists M.Gallotta, H. Assi, E. Degagne, S. Kannan, R.Coffman and C. Guiducci was published in the journal Cancer Research. The study demonstrated that combining an inhaled TLR9 agonist with systemic anti-PD-1 led to long-term survival in two different mouse lung tumor models, mediated by systemic immunity that eradicated tumors both in the lung and in distal organs. The study further delineated the distinctive mechanisms of action of these agents in the lung environment.
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