Thanks for highlighting our work!

Thanks for highlighting our work!

7/ A crucial caveat: these experiments were done in preclinical models. We have not shown that neuroimmune training occurs in people or that it explains any individual’s allergies. But it offers a new way to investigate why allergic responses can build with repeated exposure.

6/ The effect persisted for about three weeks in our models, then faded. That gives us a window into how an environmental encounter can shape a future immune response - and raises the question of whether this neuronal state could be reset.

5/ The surprise😲: the second exposure did not have to be to the same allergen. Neurons primed by papain also responded more strongly to house dust mite and Alternaria. They may be tuned to a shared feature of these allergens, rather than remembering one precise molecular identity.

4/ How is that heightened state maintained? Xueping found that allergen exposure activates mTORC1 signaling in sensory neurons and remodels their mitochondria. Disrupting either neuronal mTORC1 or mitochondrial function prevented the enhanced response to a later exposure.

3/ We found that an initial allergen exposure left sensory neurons easier to activate. A later, low dose exposure produced more itch and a stronger response in the immune cells that help initiate allergic immunity. We call this neuroimmune training.