| First Author | Marvaldi L | Year | 2020 |
| Journal | Science | Volume | 369 |
| Issue | 6505 | Pages | 842-846 |
| PubMed ID | 32792398 | Mgi Jnum | J:294736 |
| Mgi Id | MGI:6456950 | Doi | 10.1126/science.aaz5875 |
| Citation | Marvaldi L, et al. (2020) Importin alpha3 regulates chronic pain pathways in peripheral sensory neurons. Science 369(6505):842-846 |
| abstractText | How is neuropathic pain regulated in peripheral sensory neurons? Importins are key regulators of nucleocytoplasmic transport. In this study, we found that importin alpha3 (also known as karyopherin subunit alpha 4) can control pain responsiveness in peripheral sensory neurons in mice. Importin alpha3 knockout or sensory neuron-specific knockdown in mice reduced responsiveness to diverse noxious stimuli and increased tolerance to neuropathic pain. Importin alpha3-bound c-Fos and importin alpha3-deficient neurons were impaired in c-Fos nuclear import. Knockdown or dominant-negative inhibition of c-Fos or c-Jun in sensory neurons reduced neuropathic pain. In silico screens identified drugs that mimic importin alpha3 deficiency. These drugs attenuated neuropathic pain and reduced c-Fos nuclear localization. Thus, perturbing c-Fos nuclear import by importin alpha3 in peripheral neurons can promote analgesia. |
