Antibodies used in this study include rabbit polyclonal anti-TRPV4 (Lifespan Biosciences, Inc.), mouse anti-TRPV1 antibody (clone N221/17; NeuroMAB), mouse anti-STOP antibody (Cell Signaling Technology), mouse anti-β-tubulin (EMD Millipore),
mouse anti-MAP2, rabbit anti-Tau1, rat anti-MBP antibodies (EMD Millipore), and
Cy2- and Cy5-conjugated secondary antibodies (Jackson ImmunoResearch Laboratories, Inc.). In particular, the anti-TRPV4 antibody (LS-C94498; Lifespan Biosciences) was extensively validated by using Western blots and immunostaining of wild-type and TRPV4-null mice (as well as TRPV4 cDNA; Ryskamp et al., 2011 (
link)). The procedure of immunocytochemistry was previously described (Jukkola et al., 2012 (
link), 2013 (
link)). In brief, neurons were fixed with 4%
formaldehyde (10% ultrapure EM grade and methanol free; Polysciences, Inc.) and 4% sucroseq in PBS for 20 min and then stained with specified antibodies under permeabilized conditions in the presence of 0.2% Triton X-100 to label total proteins. To distinguish axons and dendrites of neurons, the anti-MAP2 (a dendritic marker) antibody was used in costaining.
Gu Y., Jukkola P., Wang Q., Esparza T., Zhao Y., Brody D, & Gu C. (2017). Polarity of varicosity initiation in central neuron mechanosensation. The Journal of Cell Biology, 216(7), 2179-2199.