I. Introduction 1 II. Materials and Methods 4 III. Results 8 3.1 Evolutionally conserved TRP channel family from C. elegans to Human. 8 3.2 Production of CRISPR/Cas9-mediated knockdown vector against ortholog genes of C. elegans proprioceptive channels. 8 3.3 Establishment of intrathecal AAV delivery to the DRG. 9 3.4 Characterization of proprioception-related behavioral phenotype. 10 3.5 In vivo AAV-gRNA delivery and behavior results. 11 IV. Discussion 23 V. References 26