The present invention concerns methods and compositions that employ peptides that target dorsal root ganglion (DRG) neurons. In particular, the peptides are used to target therapeutic agents, such as proteins, liposomes, or viral particles comprising therapeutic polynucleotides, to one or more peripheral neuropathies or neuropathic pain, for example. In particular cases, the peripheral neuropathies or neuropathic pain is caused directly or indirectly by DRG neuronopathy.