C5aR1 signaling in sensory neuron-associated macrophages drives neuropathic pain
This study identifies that C5a/C5aR1 signaling specifically activates sensory neuron-associated macrophages in the dorsal root ganglia to drive neuropathic pain via IL-1β, while excluding the involvement of C5aR1 in spinal microglia, peripheral injury-site macrophages, or primary nociceptive neurons.