Modeling Friedreich's ataxia with Bergmann glia-enriched human cerebellar organoids.
The 3 matches · 1 of them tie a paragraph to a whole file, not to given lines: a weak match, whose lines are not tinted
- [1] § Results › Time-course transcriptomic analysis of hCBOs from healthy donors and patients with FRDA ↔ bulk_rna_seq/ISB038/scripts/ISB038_DESeq_and_heatmaps.R, lines 30–110 · score 0.93 · POU5F1, PTF1A, CBLN1, GAD1, GRIN1, LHX1
- [2] § Methods › RNA bulk-sequencing analysis ↔ bulk_rna_seq/ISB038/quarto/SCTL_ISB038_DE.qmd, lines 157–239 · score 0.64 · lfcShrink, DESeq2, Bulk RNA Seq, genes, heatmaps
- [3] § Methods › RNA bulk-sequencing analysis ↔ bulk_rna_seq/ISB038/quarto/SCTL_ISB038_DE_files/libs/bootstrap/bootstrap.min.js, the whole file · a weak match · score 0.56 · Bulk RNA Seq, API, trimmed, ratios, sub, components
Paper
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The authors' code
R · 271 lines · 8 KB · MIT · 1 match
- library(DESeq2)
- library(data.table)
- library(RColorBrewer)
- library(stringr)
- library(pheatmap)
- library(apeglm)
- library(ggsci)
- library(dplyr)
- library(xfun)
- library(ComplexHeatmap)
- library(circlize)
- ### SETUP ###
- # Project name here:
- project_name <- "ISB038"
- # Set the output directory (to hold the files created by this script)
- output_dir <- file.path('')
- # input file from partek for all samples:
- combined_counts <- ".../ISB038/data/20250514_heatmap_data/Partek_ISB038-redo_Differential_analysis_filter_Ensembl_List_isb038_2 (1)/counts.txt"
- ### Heatmap code ###
- ## Setup z_score function for use in building heatmaps
- cal_z_score <- function(x) {
- (x - mean(x)) / sd(x)
- }
- # set this list of genes after examining the excel files (either directly:)
- goi_list <- c( "POU5F1",
- "NANOG",
- "OTX2",
- "GBX2",
- "FGF8",
- "EN2",
- "EN1",
- "WNT1",
- "NEUROD1",
- "ATOH1",
- "BARHL1",
- "CBLN1",
- "ZIC1",
- "PAX6",
- "SOX9",
- "PAX2",
- "NFIA",
- "MAP2",
- "PTF1A",
- "LHX1",
- "SKOR2",
- "S100B",
- "GFAP",
- "GAD1",
- "GRIN1",
- "PDE1C",
- "RELN",
- "CALB2",
- "GABRA6"
- )
- ##################################################
- ######## Reading in the files from partek #######
- ##################################################
- ########### Combined cell-lines:
- # Read in file
- input_data_2 <- read.csv( combined_counts,
- sep="\t")
- # give rownames from first column
- rownames(input_data_2) <- input_data_2$Feature
- # look at dims to get last column
- dim(input_data_2)
- # remove first column (rather, keep 2nd column through last column)
- input_data_2 <- input_data_2[,2:46]
- # now make the heatmap:
- heatmapValues2 <- input_data_2[goi_list,]
- heatmapData2 <- t(apply(heatmapValues2,1,cal_z_score))
- first_heatmapData2 <- t(heatmapData2)
- # Reorder rows so it's grouped by timepoint first, then GM23913, GM25256, and
- # NCRM within each timepoint:
- first_heatmapData2 <- first_heatmapData2[c(1,2,3,16,17,18,31,32,33,
- 4,5,6,19,20,21,34,35,36,
- 7,8,9,22,23,24,37,38,39,
- 10,11,12,25,26,27,40,41,42,
- 13,14,15,28,29,30,43,44,45),]
- col_fun = colorRamp2(c(-1.45,0,5.22), c("blue","white","red"))
- # Draw annotation blocks on timepoint first leaving space for cell line blocks:
- Heatmap(first_heatmapData2,
- name = "z_score",
- col = col_fun,
- left_annotation = rowAnnotation(
- timepoint = anno_block( gp = gpar(fill = c( "blue", "red", "orange", "green3", "purple")),
- labels = c( "day 0", "day 14", "day 21", "day 35", "day 60"),
- labels_gp = gpar( col = c("white", "white", "black", "white", "white"),
- fontsize = 10 )
- ),
- celline = anno_empty( border = FALSE )
- ),
- row_split = c(rep("day0",9),rep("day14",9), rep("day21",9), rep("day35", 9), rep("day60", 9)),
- row_order = rownames(first_heatmapData2),
- row_title = NULL,
- show_row_names = FALSE,
- column_order = colnames(first_heatmapData2),
- column_title = "All cell lines by day"
- )
- # Function to annotate a single timepoint block with cell line blocks:
- cell_line_anno <- function( group ) {
- # Select this group
- seekViewport( group )
- # Get coords of large box
- loc1 = deviceLoc( x = unit( 1, "npc" ), y = unit( 1, "npc" ) )
- loc2 = deviceLoc( x = unit( 0, "npc" ), y = unit( 0, "npc" ) )
- # find small block height
- small_height = ( loc2$y - loc1$y ) / 3
- small_width = loc2$x - loc1$x
- seekViewport( "global")
- # first box: (GM23913)
- grid.rect( loc1$x,
- loc1$y,
- width = small_width,
- height = small_height,
- just = c("left", "bottom"),
- gp = gpar( fill = "blue")
- )
- grid.text( "GM23913",
- x = (loc1$x + loc2$x) * 0.5,
- y = ( loc1$y + loc2$y) * 0.5 - small_height,
- rot = 60,
- gp = gpar( col = "white", fontsize = 8)
- )
- # second box: (GM25256)
- grid.rect( loc1$x,
- loc1$y + small_height,
- width = small_width,
- height = small_height,
- just = c("left", "bottom"),
- gp = gpar( fill = "red")
- )
- grid.text( "GM25256",
- x = (loc1$x + loc2$x) * 0.5,
- y = ( loc1$y + loc2$y) * 0.5,
- rot = 60,
- gp = gpar( col = "white", fontsize = 8)
- )
- # third box: (NCRM)
- grid.rect( loc1$x,
- loc1$y + (2 * small_height),
- width = small_width,
- height = small_height,
- just = c("left", "bottom"),
- gp = gpar( fill = "orange")
- )
- grid.text( "NCRM",
- x = (loc1$x + loc2$x) * 0.5,
- y = ( loc1$y + loc2$y) * 0.5 + small_height,
- rot = 60,
- gp = gpar( col = "black", fontsize = 8)
- )
- }
- # Draw the annotations
- cell_line_anno( "annotation_celline_1" )
- cell_line_anno( "annotation_celline_2" )
- cell_line_anno( "annotation_celline_3" )
- cell_line_anno( "annotation_celline_4" )
- cell_line_anno( "annotation_celline_5" )
- # EXPORT NOW, then:
- dev.off()
- ###################################################################
- #
- # pca plot
- #
- #
- library( plotly )
- library( ggfortify )
- library( tidyr )
- pca_data <- read.csv( combined_counts, sep="\t")
- # multistep transformation:
- genes <- pca_data$Feature
- df.data <- as.data.frame(t(pca_data[,-1]))
- colnames(df.data) <- genes
- df.data$sample <- gsub("\\.\\d+","",row.names(df.data))
- df.data$cell_line <- gsub("_day\\d+\\.\\d+","",row.names(df.data))
- df.data$timepoint <- gsub(".*(day\\d+).*","\\1",row.names(df.data))
- pca_counts <- df.data[,1:45]
- pca_res <- prcomp( pca_counts, scale. = FALSE )
- p <- autoplot( pca_res, data = df.data, colour = "timepoint", shape = "cell_line", size = 6)
- ggplotly(p)
- head(df.data)
- ## 3d
- prin_comp <- prcomp(pca_counts, rank. = 3 )
- components <- prin_comp[["x"]]
- components <- data.frame(components)
- components$PC2 <- components$PC2
- components$PC3 <- components$PC3
- components = cbind(components, df.data$timepoint)
- components = cbind(components, df.data$cell_line)
- tevr <- summary(prin_comp)[["importance"]]['Proportion of Variance',]
- tevr <- 100 * sum(tevr)
- tit <- paste0("Total Explained Variance = ", tevr )
- fig <- plot_ly( components,
- x = ~PC1,
- y = ~PC2,
- z = ~PC3,
- color = ~df.data$timepoint,
- colors = c("blue","red","orange","green","purple"),
- symbol = ~df.data$cell_line,
- symbols = c("cross","square","triangle-down")
- ) %>%
- add_markers( size = 12)
- fig <- fig %>%
- layout(
- title = tit,
- scene = list(bgcolor = "grey75")
- )
- fig
- #################### With my normalization from DESeq2
- # multistep transformation:
- normalized_goi <- normalizedCounts[goi_list,]
- df.data <- as.data.frame(t(normalizedCounts))
- df.data$sample <- gsub("\\.\\d+","",row.names(df.data))
- df.data$cell_line <- gsub("_day.*","",row.names(df.data))
- df.data$timepoint <- gsub(".*(day\\d+).*","\\1",row.names(df.data))
- dim(df.data)
- pca_counts <- df.data[,1:37877]
- pca_res <- prcomp( pca_counts, scale. = FALSE )
- p <- autoplot( pca_res, data = df.data, colour = "timepoint", shape = "cell_line", size = 6)
- ggplotly(p)
- # with ellipses:
- PC1 <- pca_res$x[,"PC1"]
- PC2 <- pca_res$x[,"PC2"]
- ggplot( df.data,
- aes( PC1,
- PC2,
- color = timepoint,
- shape = cell_line,
- group = timepoint
- )) +
- geom_point( size = 6) +
- theme_bw() +
- stat_ellipse() +
- xlab( "PC1 (42.9%)" ) +
- ylab( "PC2 (24.64%)")
- ## for 3d, run the 3d code above at this point.
ISB038_DESeq_and_heatmaps.R at commit dc91d1e, under MIT · at the source
Overview
- National Center for Advancing Translational Sciences (NCATS), Stem Cell Translation Laboratory (SCTL), National Institutes of Health (NIH), Rockville, MD USA
- National Institute of Allergy and Infectious Diseases (NIAID), Collaborative Bioinformatics Resource (NCBR), National Institutes of Health (NIH), Bethesda, MD USA
Abstract
The human cerebellum is implicated in various neurological and psychiatric diseases, but its complex development and cellular diversity have posed challenges for in vitro modeling. Here, we report the generation of human induced pluripotent stem cell (iPSC)-derived cerebellar organoids (hCBOs) that are characterized by induction of rhombomere 1 (R1) cellular identity and followed by derivation of typical neuronal and glial cell types of the cerebellum. In contrast to forebrain organoids with multiple neural rosettes and inside-out neuronal migration, hCBOs develop a germinal zone on the outermost surface of the organoids with outside-in neuronal migration. These hCBOs produce various neuronal cell types resembling granule neurons, Purkinje cells, Golgi neurons, and deep cerebellar nuclei. By using a glial induction strategy, we generate Bergmann glial cells (BGCs) that serve as scaffolds for migratory granule cells and enhance electrophysiological activity of the hCBOs. Furthermore, by generating hCBOs from patients with Friedreich’s ataxia (FRDA), we reveal disease-specific phenotypes that can be reversed by histone deacetylase (HDAC) inhibitors and gene editing by CRISPR-Cas9. Taken together, our advanced hCBO model provides new opportunities to investigate the mechanisms of cerebellar ontogenesis and utilize patient-derived iPSCs for translational research.
Reproduced under the paper's license (CC BY), from the paper cited above.
Repositories
Its files are read in the Code ↔ Paper reader above, with 3 matches between paragraphs and lines of code.
ncats/cerebellar-organoid-paper-code
dc91d1e3bbb2900c780af98a158dc87cce12cfe6, 12 June 2026Availability: 1 check, the latest on 28 September 2026: the link answers
- 28 September 2026: the link answers
17 files
- _distance_analysis/
nuclear_distance_analysi , Python, 49 liness/ __init__.py - _distance_analysis/
nuclear_distance_analysi , Python, 85 liness/ analysis.py - _distance_analysis/
nuclear_distance_analysi , Python, 27 liness/ config.py - _distance_analysis/
nuclear_distance_analysi , Python, 145 liness/ io_utils.py - _distance_analysis/
nuclear_distance_analysi , Python, 46 liness/ masks.py - _distance_analysis/
nuclear_distance_analysi , Python, 109 liness/ plotting.py - _distance_analysis/
run.py , Python, 166 lines - bulk_rna_seq/
ISB038/ , Quarto, 593 lines, 1 matchquarto/ SCTL_ISB038_DE.qmd - bulk_rna_seq/
ISB038/ , JavaScript, 7 lines, 1 matchquarto/ SCTL_ISB038_DE_files/ libs/ bootstrap/ bootstrap.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 7 linesquarto/ SCTL_ISB038_DE_files/ libs/ clipboard/ clipboard.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 9 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ anchor.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 6 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ popper.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 528 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ quarto.js - bulk_rna_seq/
ISB038/ , JavaScript, 2 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ tippy.umd.min.js - bulk_rna_seq/
ISB038/ , R, 271 lines, 1 matchscripts/ ISB038_DESeq_and_heatmap s.R - LICENSE, License, 21 lines
- README.md, Text, 2 lines
Zenodo 19560381
Availability: 1 check, the latest on 28 September 2026: the link answers (HTTP 200)
- 28 September 2026: the link answers (HTTP 200)
17 files
- _distance_analysis/
nuclear_distance_analysi , Python, 49 liness/ __init__.py - _distance_analysis/
nuclear_distance_analysi , Python, 85 liness/ analysis.py - _distance_analysis/
nuclear_distance_analysi , Python, 27 liness/ config.py - _distance_analysis/
nuclear_distance_analysi , Python, 145 liness/ io_utils.py - _distance_analysis/
nuclear_distance_analysi , Python, 46 liness/ masks.py - _distance_analysis/
nuclear_distance_analysi , Python, 109 liness/ plotting.py - _distance_analysis/
run.py , Python, 166 lines - bulk_rna_seq/
ISB038/ , Quarto, 593 linesquarto/ SCTL_ISB038_DE.qmd - bulk_rna_seq/
ISB038/ , JavaScript, 7 linesquarto/ SCTL_ISB038_DE_files/ libs/ bootstrap/ bootstrap.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 7 linesquarto/ SCTL_ISB038_DE_files/ libs/ clipboard/ clipboard.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 9 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ anchor.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 6 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ popper.min.js - bulk_rna_seq/
ISB038/ , JavaScript, 528 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ quarto.js - bulk_rna_seq/
ISB038/ , JavaScript, 2 linesquarto/ SCTL_ISB038_DE_files/ libs/ quarto-html/ tippy.umd.min.js - bulk_rna_seq/
ISB038/ , R, 271 linesscripts/ ISB038_DESeq_and_heatmap s.R - LICENSE, License, 21 lines
- README.md, Text, 2 lines
Code availability
All custom code that supported the findings of this study is available at https://
Reproduced under the paper's license (CC BY), from the paper cited above.
Tracing map
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Data
Datasets cited
- geo:GSE247974, at NCBI GEO; found in the text, “RNA bulk-sequencing analysis”
Data availability
Additional data, including the uncropped and unedited blot/
Reproduced under the paper's license (CC BY), from the paper cited above.
Versions
The history of this record: each version stored by the harvester or made by a correction of its authors or of the maintainers of its code, and what changed in its facts. The texts of the paper (its abstract, its availability statements) are not part of it; versions that changed only those are not listed.
Version 1, 28 September 2026: the first record
Recorded: type, language, journal, volume, issue, pages, dates, 16 authors, 4 keywords, 9 MeSH terms, 1 funder, 55 references.
Cite
This paper
Ryu, S., Inman, J., Hong, H., Jovanovic, V. M., Chen, Q., Gedik, Y., Jethmalani, Y., Hur, I., Harouni, M., Voss, T., Lack, J., Collins, J., Ormanoglu, P., Simeonov, A., Tristan, C. A., & Singeç, I. (2026). Modeling Friedreich's ataxia with Bergmann glia-enriched human cerebellar organoids. Communications biology, 9(1), 1235. https://
BibTeX
@article{ryu2026modeling
author = {Ryu, Seungmi and Inman, Jason and Hong, Hyenjong and Jovanovic, Vukasin M and Chen, Qiang and Gedik, Yeliz and Jethmalani, Yogita and Hur, Inae and Harouni, Majid and Voss, Ty and Lack, Justin and Collins, Jack and Ormanoglu, Pinar and Simeonov, Anton and Tristan, Carlos A and Singeç, Ilyas},
title = {{Modeling Friedreich's ataxia with Bergmann glia-enriched human cerebellar organoids}},
journal = {Communications biology},
year = {2026},
month = may,
volume = {9},
number = {1},
pages = {1235},
publisher = {Nature Publishing Group},
issn = {2399-3642},
doi = {10.1038/
url = {https://
pmid = {42098441},
pmcid = {PMC13598134}
}
RIS
TY - JOUR
AU - Ryu, Seungmi
AU - Inman, Jason
AU - Hong, Hyenjong
AU - Jovanovic, Vukasin M
AU - Chen, Qiang
AU - Gedik, Yeliz
AU - Jethmalani, Yogita
AU - Hur, Inae
AU - Harouni, Majid
AU - Voss, Ty
AU - Lack, Justin
AU - Collins, Jack
AU - Ormanoglu, Pinar
AU - Simeonov, Anton
AU - Tristan, Carlos A
AU - Singeç, Ilyas
TI - Modeling Friedreich's ataxia with Bergmann glia-enriched human cerebellar organoids
T2 - Communications biology
J2 - Commun Biol
PY - 2026
DA - 2026/
VL - 9
IS - 1
SP - 1235
SN - 2399-3642
PB - Nature Publishing Group
DO - 10.1038/
UR - https://
LA - en
ER -
CSL-JSON
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