Anti RFP  

Western Blot of Chicken Anti-RFP Antibody. Lane 1: Prestained MW marker (p/n MB-210-0500). Lane 2: RFP (p/n 000-001-379) 0.1μg reduced [+]. Lane 3: RFP (p/n 000-001-379) 0.05μg reduced [+]. Lane 4: RFP/HEK293T (p/n 000-001-379/W09-001-GX5) 0.5μg/10μg reduced [+]. Lane 5: HEK293T (p/n W09-001-GX5) 10μg reduced [-]. Blocking Buffer: BlockOut^(R) Universal Blocking Buffer (p/n MB-073) for 1hr at RT. Primary Antibody: Chicken Anti-RFP at 1μg/mL overnight at 2-8°C. Secondary Antibody: Rabbit anti-Chicken IgG HRP (p/n 603-4302) at 1:40,000 for 30 mins at RT. Predicted/Observed: 27kda.

Western blot of Rockland's Chicken Anti-RFP Antibody. Loaded 0.1 μg of RFP protein (p/n 000-001-379) on a 4-20% gel and transferred to nitrocellulose membrane. Chicken anti-RFP Antibody was added at 1.0 μg/mL at RT for 2 hours. IRDye800^(R) goat anti-Chicken (p/n 603-132-126) was added at 1:20,000 at RT for 45 minutes.

Western Blot Results of Chicken Anti-RFP Antibody. Lane 1: Opal PreStained Molecular Weight Marker (p/n MB-210-0500). Lane 2: RFP (p/n 000-001-379), load 50ng. Primary Antibody: Anti-RFP 1μg/mL overnight at 4°C. Secondary Antibody: Goat Anti-Chicken HRP (p/n 603-103-126) at 1:40,000 for 30min at RT. Blocking: BlockOut (p/n MB-073) for 30min at RT. Expect: 27kDa.

Differential expression of TRKC in PSNs prior to the cell death period. a Scheme of our working hypothesis. b, c Temporal fate mapping of TRKC PSNs by 4-OHT induction. TrkCCreER mice allow temporary activation of CreER in the TRKC+ cells 2？h after 4-OHT injection21,22. Immunostaining for PV, RFP and RUNX3 on E17.5 DRG sections (c) and graph showing distribution of PV+/RUNX3+ PSNs among the TOM+ cells (n？=？4). Scale bar: 20？μm. d Quantification of PSNs at C5 and C7. ***P？<？0.001, one-way analysis of variance (ANOVA) with Sidak’s multiple comparisons test (n？=？2？3). The window of PSNs cell death is shown. e TRKC expression in E11.5 ISL1+ (and RUNX3+, whose staining is not shown for more visibility) DRG neurons. Scale bar: 50？μm. f TRKC levels in PSNs of e？illustrated by color coding; dark blue indicates the lower and red the higher TRKC levels. From here, all observations are done at brachial levels (C5？8). g Distribution of TRKC levels in PSNs from e. h Distribution of TRKC levels in PSNs in E11.5 DRG neurons (from g). The data exhibit a Poisson-like distribution (one representative animal), with the mean used to define the two different categories of TRKC intensity (TRKCHigh and TRKCLow). i Projection of seven images of RUNX3+/TRKC+ PSNs from one brachial DRG; dots indicate TRKC-labeled neurons and color codes reveal TRKC intensity as shown in h. j Projection image of smFISH for pan Ntrk3 and Ntrk3 full length (FL) transcripts in E11.5 DRG, visualized at high magnification in (1) and (2) (images show full projection); right panel shows color coding of Ntrk3 FL levels in red; the brighter, the higher levels. k Distribution of the number of Ntrk3 FL molecules in E11.5 DRG neurons by smFISH, normalized to pan Ntrk3 (Ntrk3 FL represent 68% of all Ntrk3 transcripts). lTrkCCreER;R26tdTOM mice were injected at E9.75 with 4-OHT and analyzed at E11.5 (n？=？3).

PSNs with high TRKC levels preferentially survive the cell death period. a Temporal fate mapping of TRKCHigh PSNs by 4-OHT (low dose, 0.02？g/kg). b？d Injection of TrkCCreER;R26tdTOM mice with low dose of 4-OHT at E11.0; DRG analyzed at E11.5 with recombination in few (b), preferentially high TRKC PSNs (c, d) (P？<？0.001). Frequency distribution of TOM+ PSNs according to TRKC intensity (c) and pie charts (d) illustrating the large proportion of TOM+ cells among TRKCHigh PSNs. Scale bar: 50？μm. e, f Percentage of recombined PSNs at E11.5 and E13.5 in DRGs from TrkCCreER;R26tdTOM animals after 4-OHT injection at E11.0 (*P？<？0.05, Student’s t-test; n？=？2 litters with 6 embryos, E11.5; 2 litters with 5 embryos, E13.5). g The percentage of labeled PSNs does not change between E11.5 and E13.5 in R26CreERT2;R26tdTOM embryos injected at E11.0 with 0.032？g/kg 4-OHT (n？=？4). Similarly, the recombination rate in TOM+ PSNs does not change between E14.5 and E16.5 in TrkCCreER;R26tdTOM embryos after injection at E14.0 with 0.02？g/kg 4-OHT (n？=？2). Unpaired Student’s t-test. h Whole-mount immunostaining for TRKC, NF160 and RFP of E13.5 forelimb from TrkCCreER;R26tdTOM embryos injected with low dose 4-OHT at E11.0. Insert shows restricted number of TOM+ fibers dispersed amongst TRKC+ axons. Scale bar: 200？μm. i Pattern and color-coded depth (in micrometers) of innervation of TRKC+, NF160+ and RFP+ nerve fibers (processed from h) of E13.5 forelimb from TrkCCreER;R26tdTOM embryos injected with a low dose of 4-OHT (0.02？g/kg) at E11. The pattern and depth color code reveal similar territories (in all dimensions, xyz) of innervation of the TOM+ PSNs compared to all axons (NF160). Scale bar: 200？μm. j Scheme illustrating the preferential selection of TRKCHigh PSNs during the cell death period. Source data are available as a Source Data file Figure provided by CiteAb. Source: Nat Commun, PMID: 31515492.

PSNs with high TRKC levels preferentially survive the cell death period. a Temporal fate mapping of TRKCHigh PSNs by 4-OHT (low dose, 0.02？g/kg). b？d Injection of TrkCCreER;R26tdTOM mice with low dose of 4-OHT at E11.0; DRG analyzed at E11.5 with recombination in few (b), preferentially high TRKC PSNs (c, d) (P？<？0.001). Frequency distribution of TOM+ PSNs according to TRKC intensity (c) and pie charts (d) illustrating the large proportion of TOM+ cells among TRKCHigh PSNs. Scale bar: 50？μm. e, f Percentage of recombined PSNs at E11.5 and E13.5 in DRGs from TrkCCreER;R26tdTOM animals after 4-OHT injection at E11.0 (*P？<？0.05, Student’s t-test; n？=？2 litters with 6 embryos, E11.5; 2 litters with 5 embryos, E13.5). g The percentage of labeled PSNs does not change between E11.5 and E13.5 in R26CreERT2;R26tdTOM embryos injected at E11.0 with 0.032？g/kg 4-OHT (n？=？4). Similarly, the recombination rate in TOM+ PSNs does not change between E14.5 and E16.5 in TrkCCreER;R26tdTOM embryos after injection at E14.0 with 0.02？g/kg 4-OHT (n？=？2). Unpaired Student’s t-test. h Whole-mount immunostaining for TRKC, NF160 and RFP of E13.5 forelimb from TrkCCreER;R26tdTOM embryos injected with low dose 4-OHT at E11.0. Insert shows restricted number of TOM+ fibers dispersed amongst TRKC+ axons. Scale bar: 200？μm. i Pattern and color-coded depth (in micrometers) of innervation of TRKC+, NF160+ and RFP+ nerve fibers (processed from h) of E13.5 forelimb from TrkCCreER;R26tdTOM embryos injected with a low dose of 4-OHT (0.02？g/kg) at E11. The pattern and depth color code reveal similar territories (in all dimensions, xyz) of innervation of the TOM+ PSNs compared to all axons (NF160). Scale bar: 200？μm. j Scheme illustrating the preferential selection of TRKCHigh PSNs during the cell death period. Source data are available as a Source Data file Figure provided by CiteAb. Source: Nat Commun, PMID: 31515492.

PSNs with high TRKC levels preferentially survive the cell death period. a Temporal fate mapping of TRKCHigh PSNs by 4-OHT (low dose, 0.02？g/kg). b？d Injection of TrkCCreER;R26tdTOM mice with low dose of 4-OHT at E11.0; DRG analyzed at E11.5 with recombination in few (b), preferentially high TRKC PSNs (c, d) (P？<？0.001). Frequency distribution of TOM+ PSNs according to TRKC intensity (c) and pie charts (d) illustrating the large proportion of TOM+ cells among TRKCHigh PSNs. Scale bar: 50？μm. e, f Percentage of recombined PSNs at E11.5 and E13.5 in DRGs from TrkCCreER;R26tdTOM animals after 4-OHT injection at E11.0 (*P？<？0.05, Student’s t-test; n？=？2 litters with 6 embryos, E11.5; 2 litters with 5 embryos, E13.5). g The percentage of labeled PSNs does not change between E11.5 and E13.5 in R26CreERT2;R26tdTOM embryos injected at E11.0 with 0.032？g/kg 4-OHT (n？=？4). Similarly, the recombination rate in TOM+ PSNs does not change between E14.5 and E16.5 in TrkCCreER;R26tdTOM embryos after injection at E14.0 with 0.02？g/kg 4-OHT (n？=？2). Unpaired Student’s t-test. h Whole-mount immunostaining for TRKC, NF160 and RFP of E13.5 forelimb from TrkCCreER;R26tdTOM embryos injected with low dose 4-OHT at E11.0. Insert shows restricted number of TOM+ fibers dispersed amongst TRKC+ axons. Scale bar: 200？μm. i Pattern and color-coded depth (in micrometers) of innervation of TRKC+, NF160+ and RFP+ nerve fibers (processed from h) of E13.5 forelimb from TrkCCreER;R26tdTOM embryos injected with a low dose of 4-OHT (0.02？g/kg) at E11. The pattern and depth color code reveal similar territories (in all dimensions, xyz) of innervation of the TOM+ PSNs compared to all axons (NF160). Scale bar: 200？μm. j Scheme illustrating the preferential selection of TRKCHigh PSNs during the cell death period. Source data are available as a Source Data file Figure provided by CiteAb. Source: Nat Commun, PMID: 31515492.