Auxin-inducible degradation of UNC-116 in C. elegans inhibits bidirectional dense core vesicle transport and worm locomotion on different timescales.
The 2 matches
- [1] § MATERIALS AND METHODS › Analysis of steady-state images ↔ snb1/Puncta_analysis_normalised_alldata_snb1_v2_raw.R, lines 100 to 155 · score 0.61 · pracma package, peak intensity, raw, puncta, v2, median · Report a mismatch
- [2] § MATERIALS AND METHODS › Analysis of steady-state images ↔ ida1/Puncta_analysis_normalised_alldata_functions.R, lines 78 to 123 · score 0.58 · pracma package, peak intensity, raw, puncta, median, um · Report a mismatch
Paper
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The authors' code
R · 159 lines · 6 KB · no license · 1 match
- library(readxl)
- library(writexl)
- library(ggplot2)
- library(pracma)
- library(magrittr)
- library(tidyverse)
- library(gsignal)
- library(patchwork)
- ### NOTE:
- # for this script, the sheet name to be analysed has to be manually set in the lapply call at the bottom
- # typically this is 'axon' or 'dendrite'
- # define functions to detect peaks and plot the outputs
- detect_peaks <- function(x,intensities){
- target_worm <- intensities %>%
- dplyr::filter(Worm == x) %>%
- drop_na()
- sd_y <- sd(target_worm$Grey_Value_norm, na.rm = TRUE) # calculate standard deviation
- # we need all positive values for peak detection so make a grey_value column normalised to 0
- # min_value <- abs(min(target_worm$Grey_Value_norm))
- # target_worm$Grey_Value_norm_abs <- target_worm$Grey_Value_norm + min_value
- # peaks_median <- tibble(findpeaks(target_worm$Grey_Value_norm, minpeakheight = median(target_worm$Grey_Value))) # note we use the median of the un-normalised Grey Value - equivalent to using a threshold of median * 2
- peaks_sd <- as_tibble(pracma::findpeaks(target_worm$Grey_Value_norm, minpeakheight = sd_y))
- # colnames(peaks_median) <- c("peak_height","peak_max","peak_start","peak_end")
- colnames(peaks_sd) <- c("peak_height","peak_max","peak_start","peak_end")
- # for every identified peak pull the relevant intensity data and calculate FWHM and AUC
- fwhm_vec <- vector(length = nrow(peaks_sd))
- auc_vec <- vector(length = nrow(peaks_sd))
- peak_vec <- vector(length = nrow(peaks_sd))
- start_vec <- vector(length = nrow(peaks_sd))
- end_vec <- vector(length = nrow(peaks_sd))
- for(i in 1:length(fwhm_vec)){
- peak <- target_worm[peaks_sd$peak_start[i]:peaks_sd$peak_end[i],]
- fwhm_vec[i] <- fwhm(peak$Distance,peak$Grey_Value_norm)
- auc_vec[i] <- trapz(peak$Distance,peak$Grey_Value_norm)
- peak_vec[i] <- target_worm$Distance[peaks_sd$peak_max[i]]
- start_vec[i] <- target_worm$Distance[peaks_sd$peak_start[i]]
- end_vec[i] <- target_worm$Distance[peaks_sd$peak_end[i]]
- }
- peaks_sd$fwhm <- fwhm_vec
- peaks_sd$auc <- auc_vec
- peaks_sd$worm <- x
- peaks_sd$peak_max_dist <- peak_vec
- peaks_sd$peak_start_dist <- start_vec
- peaks_sd$peak_end_dist <- end_vec
- # calculate the puncta intensity - median ratio
- # note we add median value back to the puncta intensity to undo the normalisation carried out in the master function
- peaks_sd$median_ratio <- (peaks_sd$peak_height + median(target_worm$Grey_Value))/median(target_worm$Grey_Value)
- return(peaks_sd)
- }
- puncta_per_um <- function(x,intensities,peaks){
- target_worm <- intensities %>%
- dplyr::filter(Worm == x) %>%
- drop_na()
- target_peaks <- peaks %>%
- dplyr::filter(worm == x) %>%
- drop_na()
- peak_density <- nrow(target_peaks)/max(target_worm$Distance)
- return(peak_density)
- }
- plotting_func <- function(x,intensities,peaks){
- target_worm <- intensities %>%
- dplyr::filter(Worm == x) %>%
- drop_na()
- target_peak <- peaks %>%
- dplyr::filter(worm == x) %>%
- drop_na()
- plot_worm <- ggplot(target_worm, aes(x = Distance, y = Grey_Value_norm)) +
- geom_line() +
- geom_point(data = target_peak, aes(x = peak_max_dist, y = peak_height), color = "black",fill = "firebrick2", size = 2,shape=21,alpha = 0.5) +
- labs(title = paste0(str_to_title(str_extract(x,pattern="[a-z]+"))," ",str_extract(x,pattern="\\d+")),
- x = "Distance (µm)",
- y = "Normalised Intensity (A.U.)") +
- scale_y_continuous(limits = c(-1000,4000)) +
- theme_minimal(base_size = 12)
- return(plot_worm)
- }
- # define master function to apply analysis to every source_data
- analyse_intensities <- function(source_data,sheet){
- # load data and normalise
- raw_intensities <- read_xlsx(source_data,sheet = sheet)
- source_data_name <- str_sub(source_data,start = 1, end = -6)
- num_worms <- ncol(raw_intensities)/2
- intensities <- raw_intensities %>%
- pivot_longer(cols = everything(),names_to = c(".value","Distance"),names_sep = "e_")
- colnames(intensities) <- c("Worm","Distance","Grey_Value")
- # arrange worm names in numeric order to allow handling of any number of non-consecutive worm numbers
- worm_names <- tibble(worm = unique(intensities$Worm),worm_num = as.numeric(str_extract(unique(intensities$Worm),"\\d+")))
- worm_names %<>%
- arrange(worm_num)
- intensities$Worm <- factor(intensities$Worm,levels = worm_names$worm)
- intensities %<>%
- group_by(Worm) %>%
- mutate(Grey_Value_norm = Grey_Value - median(Grey_Value,na.rm=T))
- # # quick visualisation of intensity over neuron length
- # ggplot(intensities,aes(x = Distance, y = Grey_Value_norm)) +
- # geom_line() +
- # scale_y_continuous(breaks = c(-4000,0,4000,8000,12000,16000))+
- # theme_minimal()+
- # facet_wrap(~Worm)
- #
- # ggsave(paste0(source_data_name,"_normalised_intensity_plot.png"))
- # detect peaks using pracma package
- peaks <- do.call(rbind,lapply(unique(intensities$Worm),detect_peaks,intensities=intensities))
- write_xlsx(peaks,paste0("output_data/",source_data_name,"_",sheet,"_peaks_raw.xlsx"))
- peaks_summary <- peaks %>%
- group_by(worm) %>%
- summarise(n_peaks = n(),mean_peak_intensity = mean(peak_height),mean_peak_auc = mean(auc),mean_peak_median_ratio = mean(median_ratio))
- peaks_summary$puncta_per_um <- do.call(c,lapply(unique(intensities$Worm),puncta_per_um,intensities=intensities,peaks=peaks))
- write_xlsx(peaks_summary,paste0("output_data/",source_data_name,"_",sheet,"_peaks_summary.xlsx"))
- plot_list <- lapply(unique(intensities$Worm),plotting_func,intensities=intensities,peaks=peaks)
- wrap_plots(plot_list,nrow=5, ncol=4)
- ggsave(paste0("plots/all_peak_plots_",source_data_name,"_",sheet,"_4000cutoff_24h.pdf"),width = 6500, height = 3000, units = "px")
- }
- filelist_all <- list.files(pattern = paste(".*_snb1.xlsx",sep="|"))
- lapply(filelist_all,analyse_intensities,sheet="axon")
Puncta_analysis_normalised_alldata_snb1_v2_raw.R at commit 2dc1579, no license · at the source
Overview
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, The Michael Smith Building, Rumford St, Manchester M13 9PT, UK
- Department of Mathematics, Faculty of Science and Engineering, The University of Manchester, Manchester M13 9PL, UK
- MRC-University of Glasgow Centre for Virus Research, Garscube Campus, Switchback Road, Glasgow G61 1AF, UK
Abstract
The microtubule motor kinesin-1 is vital in neurons, with mutations being associated with neurological diseases. Deletion of the Caenorhabditis elegans kinesin-1 gene unc-116 is lethal, and viable mutants are uncoordinated. Here, we perform auxin-mediated degradation of the UNC-116 protein and monitor effects on worm locomotion and dense core vesicle (DCV) transport. UNC-116 is degraded within 1–3 h of auxin treatment. Impaired swimming and crawling are detected after 6–14 h, depending on organismal age, and degradation of UNC-116 in neurons alone disrupts locomotion. Effects on DCV transport are observed sooner, with 4 h of degradation strongly inhibiting both anterograde and retrograde movement. This motility recovers when worms are transferred to auxin-free plates for 24 h, even though protein level recovery is incomplete. Rescue from a 10 h auxin treatment completely restores crawling speed, but although swimming is initially unaffected, it becomes strongly inhibited during the rescue period, suggesting that UNC-116 has distinct roles in these locomotive gaits. Overall, by bypassing early developmental UNC-116 functions, we reveal that UNC-116 is essential for bidirectional DCV transport and crucial for worm locomotion.
Reproduced under the paper's license (CC BY), from the paper cited above.
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Its files are read in the Code ↔ Paper reader above, with 2 matches between paragraphs and lines of code.
umkich/organelle_transport_analysis
dd740bba10119f4fec7b13e3bcf71e112a670821, 25 September 2024Availability: 1 check, the latest on 30 September 2026: the link answers
- 30 September 2026: the link answers
8 files
- example/
example.ipynb , Jupyter, 110 lines - src/
organelle_transport_anal , Python, 1 lineysis/ __init__.py - src/
organelle_transport_anal , Python, 153 linesysis/ directions.py - src/
organelle_transport_anal , Python, 85 linesysis/ kymographs.py - src/
organelle_transport_anal , Python, 102 linesysis/ plotting.py - src/
organelle_transport_anal , Python, 39 linesysis/ velocities.py - LICENSE, License, 21 lines
- README.md, Text, 39 lines
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jcherzig/ida1_vesicle_analysis
2dc1579383710d3e3279a830321acd6a8a818cbe, 17 December 2025Availability: 1 check, the latest on 30 September 2026: the link answers
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10 files
- ida1/
Puncta_analysis_normalis , R, 123 lines, 1 matched_alldata_functions.R - ida1/
Puncta_analysis_normalis , R, 23 linesed_alldata_v2.R - ida1/
Puncta_analysis_normalis , R, 198 linesed_neuron_end_functions. R - ida1/
Puncta_analysis_normalis , R, 23 linesed_neuron_end_v2.R - nlp21/
Puncta_analysis_normalis , R, 123 linesed_alldata_nlp21_functio ns.R - nlp21/
Puncta_analysis_normalis , R, 22 linesed_alldata_nlp21_v2.R - snb1/
Puncta_analysis_normalis , R, 123 linesed_alldata_snb1_function s.R - snb1/
Puncta_analysis_normalis , R, 22 linesed_alldata_snb1_v2.R - snb1/
Puncta_analysis_normalis , R, 159 lines, 1 matched_alldata_snb1_v2_raw.R - README.md, Text, 9 lines
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This paper
Boström, A. H., Gavrilova, A., Herzig, J. C., Poulin, G. B., & Allan, V. J. (2026). Auxin-inducible degradation of UNC-116 in C. elegans inhibits bidirectional dense core vesicle transport and worm locomotion on different timescales. Journal of cell science, 139(6), jcs264245. https://
BibTeX
@article{bostrom2026auxi
author = {Boström, Astrid H and Gavrilova, Anna and Herzig, James C and Poulin, Gino B and Allan, Victoria J},
title = {{Auxin-inducible degradation of UNC-116 in C. elegans inhibits bidirectional dense core vesicle transport and worm locomotion on different timescales}},
journal = {Journal of cell science},
year = {2026},
month = mar,
volume = {139},
number = {6},
pages = {jcs264245},
publisher = {Company of Biologists},
issn = {0021-9533},
doi = {10.1242/
url = {https://
pmid = {41725581},
pmcid = {PMC13070256}
}
RIS
TY - JOUR
AU - Boström, Astrid H
AU - Gavrilova, Anna
AU - Herzig, James C
AU - Poulin, Gino B
AU - Allan, Victoria J
TI - Auxin-inducible degradation of UNC-116 in C. elegans inhibits bidirectional dense core vesicle transport and worm locomotion on different timescales
T2 - Journal of cell science
J2 - J Cell Sci
PY - 2026
DA - 2026/
VL - 139
IS - 6
SP - jcs264245
SN - 0021-9533
PB - Company of Biologists
DO - 10.1242/
UR - https://
LA - en
ER -
CSL-JSON
{
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"container-title": "Journal of cell science",
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"given": "Astrid H"
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"given": "James C"
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"given": "Gino B"
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}
],
"container-title-short":
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"issue": "6",
"page": "jcs264245",
"DOI": "10.1242/
"PMID": "41725581",
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"ISSN": "0021-9533",
"publisher": "Company of Biologists",
"URL": "https://
"language": "en",
"issued": {
"date-parts": [
[
2026,
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