Predicting Relevant Microglia-Associated Cell-Cell Communication Pathways in Alzheimer's Disease: A Role for SPP1.
The 10 matches · 2 of them tie a paragraph to a whole file without given lines: weak matches, whose lines are not tinted
- [1] § Methods › snRNA Analysis Pipeline ↔ analysis_code/02_subclustering_analysis/02A_subclustering_template.R, lines 53 to 140 · score 0.92 · principal component, FindClusters, RunUMAP, ScaleData, variable features, harmonized · Report a mismatch
- [2] § Results › Generating a Complementary snRNAseq Dataset to Study the Cellular Interactome in Alzheimer's Disease ↔ analysis_code/02_subclustering_analysis/02A_subclustering_template.R, lines 1 to 51 · score 0.89 · CSF1R, SLC17A7, SLC1A2, inhibitory neuron, ADARB2, AQP4 · Report a mismatch
- [3] § Methods › snRNA Analysis Pipeline ↔ analysis_code/01_analysis_from_cellRanger7_outs/01D_per_sample_QC.R, lines 44 to 105 · score 0.85 · ambient RNA, FindClusters, RunUMAP, ScaleData, variable features, doublets · Report a mismatch
- [4] § Results › Generating a Complementary snRNAseq Dataset to Study the Cellular Interactome in Alzheimer's Disease ↔ analysis_code/01_analysis_from_cellRanger7_outs/01E_total_object_integration.R, lines 41 to 112 · score 0.83 · CSF1R, SLC17A7, SLC1A2, ADARB2, AQP4, BCAN · Report a mismatch
- [5] § Methods › snRNA Analysis Pipeline ↔ analysis_code/02_subclustering_analysis/02A_subclustering_template.R, lines 53 to 140 · score 0.79 · harmonized principal component, cumulative percent, variation associated, UMAP, neighbor, cell · Report a mismatch
- [6] § Results › Generating a Complementary snRNAseq Dataset to Study the Cellular Interactome in Alzheimer's Disease ↔ analysis_code/02_subclustering_analysis/02A_subclustering_template.R, lines 1 to 51 · score 0.72 · vascular leptomeningeal cells, endothelial cells, excitatory neurons, fibroblasts, lymphocytes, macrophages · Report a mismatch
- [7] § Methods › snRNA Analysis Pipeline ↔ analysis_code/01_analysis_from_cellRanger7_outs/01E_total_object_integration.R, lines 41 to 112 · score 0.63 · cumulative percent, variation associated, UMAP, neighbor, cell · Report a mismatch
- [8] § Methods › snRNA Analysis Pipeline ↔ analysis_code/04_CellChat/04A_template_CellChat_per_condition.R, the whole file · a weak match · score 0.60 · CellChatDB, database, diagnosis, subsets, interactions, pathways · Report a mismatch
- [9] § Results › Generating a Complementary snRNAseq Dataset to Study the Cellular Interactome in Alzheimer's Disease ↔ analysis_code/03_proportion_analysis/03A_proportion_analysis.R, the whole file · a weak match · score 0.57 · excitatory neurons, inhibitory neurons, PMD, age, sex, Propeller · Report a mismatch
- [10] § Results › Microglia–Microglia SPP1 Signaling in AD ↔ analysis_code/04_CellChat/04B_CellChat_compare.R, lines 87 to 138 · score 0.55 · ligand receptor, cell chat, aggregated, incoming, outgoing, widths · Report a mismatch
Paper
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The authors' code
R · 140 lines · 6 KB · no license · 4 matches
- #performed on HPC
- # visualize different cell type markers to use for subset
- # for MTL object, total object was split into excitatory_neurons, inhibitory_neurons, and non_neurons
- # for combined MTL and EGE dataset, we split into all available cell types, namely excitatory_neurons, inhibitory_neurons, astrocytes, microglia, monocytes, endothelial cells, fibroblasts, vascular leptomeningeal cells, oligodendrocytes, OPCs, lymphocytes, and CNS macrophages.
- # during subclustering, we sometimes took step wise approaches to extracting cell types, e.g. first subset out and subcluster neurons, then identify and repeat analysis on the excitatory subset
- library(Seurat)
- library(dplyr)
- library(patchwork)
- library(ggplot2)
- library(harmony)
- library(qs2)
- sessionInfo()
- #define locations
- scratch.dir = "/link/to/HPC/directory/"
- Output.dir.plots = "./script_identifier_"
- Output.dir.objects = paste0(scratch.dir, "current_round_script_identifier_")
- prev.Output.dir.objects = "previous_round_script_identifier_" #either total object or subset object from another round
- #load object
- cells = readRDS(paste0(scratch.dir, prev.Output.dir.objects))
- Idents(cells) = "RNA_snn_res.0.08" #resolution of interest
- # visualize the cells we intend to subset (from full object) or remove (during subclustering rounds)
- pdf(paste0(Output.dir.plots, "visualize_cell_subsets.pdf"))
- markers <- c("RBFOX3",
- "SNAP25",
- "SLC17A7",
- "GAD2",
- "ADARB2",
- "LHX6",
- "GFAP","AQP4","SLC1A2",
- "PLP1","MOBP","OPALIN",
- "CSF1R","C3",
- "CLDN5","PECAM1",
- "DCN","COL1A1",
- "PDGFRB",
- "PDGFRA","BCAN",
- "CSPG4")
- DotPlot(object = cells, assay = "RNA",cluster.ident = T, features = markers, cols = c("green", "red"), dot.scale = 12) +
- theme(axis.text.x = element_text(angle = 90, vjust = 0.5, hjust=1),
- aspect.ratio = 12/10) + xlab("") + ylab("")
- cells$highlight = cells$RNA_snn_res.0.08 %in% c(1, 8, 9, 10, 15) # detect which clusters to keep
- DimPlot(cells, group.by = "highlight", raster =T)
- dev.off()
- # example1: subsetting out nonNeuronal cells for first subclustering
- cells = subset(cells, highlight == TRUE)
- nrow([email hidden]) %>% print()
- [email hidden]$Sample %>% table() %>% print()
- # example2: subset out bad clusters, also applicable when removing predicted doublets
- cells = subset(cells, highlight == FALSE)
- cells = subset(cells, predicted_doublet == "False")
- # proceed to analysis
- # we use 2000 variable features for clustering different cell types, and 4000 variable features to subcluster within one cell type (e.g. neurons)
- cells <- NormalizeData(cells, verbose = FALSE)
- cells <- FindVariableFeatures(cells, selection.method = "vst",
- nfeatures = 4000, verbose = FALSE)
- # rescale object
- # we regress out 'percent.mito' and 'nCount_RNA' when clustering different cell types, and include 'percent.ribo' when subclustering within one cell type (e.g. neurons)
- print("rescaling object")
- cells <- ScaleData(object = cells, vars.to.regress = c("percent.mito", "nCount_RNA", "percent.ribo"))
- #dimensionality reduction with PCA
- cells <- RunPCA(cells, npcs = 40)
- #visualize PCA
- DimPlot(cells, reduction = "pca", group.by = "Sample", raster = T) + NoLegend()
- ggsave(paste0(Output.dir.plots, "scaled_pca.pdf"))
- ElbowPlot(cells, ndims = 40)
- ggsave(paste0(Output.dir.plots, "scaled_elbowPlot.pdf"))
- #harmonize principal components using Harmony
- print("starting harmony")
- cells <- RunHarmony(cells, "Sample", plot_convergence = TRUE)
- ggsave(paste0(Output.dir.plots, "harmony_convergencePlot.pdf"))
- print("harmony finished, processing object")
- # determine optimal PCs to load into UMAP
- # adapted from the approach here: https://hbctraining.github.io/scRNA-seq/lessons/sc_exercises_clustering_analysis.html
- # Determine percent of variation associated with each PC
- pct <- cells[["harmony"]]@stdev / sum(cells[["harmony"]]@stdev) * 100
- # Calculate cumulative percents for each PC
- cumu <- cumsum(pct)
- # Determine which PC exhibits cumulative percent greater than 90% and % variation associated with the PC as less than 5
- co1 <- which(cumu > 90 & pct < 5)[1]
- co2 <- sort(which((pct[1:length(pct) - 1] - pct[2:length(pct)]) > 0.1), decreasing = T)[1] + 1
- pcs_harmony <- min(co1, co2)
- print(paste0("Harmony PCs to load into UMAP: ", pcs_harmony))
- cells = cells %>%
- RunUMAP(reduction = "harmony", dims = 1:pcs_harmony) %>%
- FindNeighbors(reduction = "harmony", dims = 1:pcs_harmony)
- cells = cells %>%
- FindClusters(resolution = 0.08) %>%
- FindClusters(resolution = 0.2) %>%
- FindClusters(resolution = 0.15) %>%
- FindClusters(resolution = 0.1)
- print("Finish processing, saving and making plots")
- #switching to QS2 instead of saveRDS for speed
- qs_save(cells, paste0(Output.dir.objects, "integrated.qs2"))
- #plotting
- pdf(paste0(Output.dir.plots, "integration_visualization.pdf"))
- #total UMAP check
- DimPlot(cells, raster = T, label = T, group.by = "Donor") + NoLegend()
- DimPlot(cells, raster = T, label = T, group.by = "Sample") + NoLegend()
- DimPlot(cells, raster = T, label = T, group.by = "region") + NoLegend()
- DimPlot(cells, raster = T, label = T, group.by = "predicted_doublet") + NoLegend()
- #clustering check
- list_of_res = c("RNA_snn_res.0.08","RNA_snn_res.0.1","RNA_snn_res.0.15","RNA_snn_res.0.2")
- for (each in list_of_res){
- print(DimPlot(cells, group.by=each, raster = T, label = T) + NoLegend())
- print(VlnPlot(cells,group.by=each,features = c("nFeature_RNA", "percent.ribo", "percent.mito","nCount_RNA"),ncol = 2, pt.size = 0))
- print(VlnPlot(cells,group.by=each,features = c("scrublet_score"), pt.size = 0))
- print(DotPlot(object = cells, group.by=each, assay = "RNA",cluster.ident = T,
- features = markers, cols = c("green", "red"), dot.scale = 12) + theme(axis.text.x = element_text(angle = 90, vjust = 0.5, hjust=1),aspect.ratio = 12/10) + xlab("") + ylab(""))
- }
- dev.off()
- # run quick marker testing for specific resolutions
- Idents(cells) = "RNA_snn_res.0.2"
- markers = FindAllMarkers(cells)
- write.csv(markers, paste0(Output.dir.plots, "res0.2_markers.csv"))
02A_subclustering_template.R at commit c6cc60e, no license · at the source
Overview
Abstract
Microglia play a key role in the pathophysiology of Alzheimer's Disease (AD) and their increased heterogeneity likely affects disease progression. We previously identified distinct microglial signatures that were enriched in AD donors and associated with amyloid and tau, respectively. Here we generated a snRNAseq dataset from postmortem control and AD cases and analyzed alterations in cell–cell communication pathways that might be relevant to AD pathophysiology. One signaling pathway perturbed in AD cases involved SPP1, and while this pathway was also present in control samples, microglia–microglia SPP1 signaling was restricted to AD donors. Further analyses within microglia–microglia signaling predict AD‐specific induction of GAS6‐AXL signaling (from inflammatory and ribosomal microglia), and SPP1‐ITGAV/
Reproduced under the paper's license (CC BY), from the paper cited above.
Repository
Its files are read in the Code ↔ Paper reader above, with 10 matches between paragraphs and lines of code.
jmkotah/AD_snRNAseq
c6cc60e287885b6d535323d96339e759739bdba9, 11 August 2026Availability: 2 checks, the latest on 31 October 2026: the link answers
- 31 October 2026: the link answers
- 1 October 2026: the link answers
10 files
- analysis_code/
01_analysis_from_cellRan , R, 53 linesger7_outs/ 01A_SoupX_correction.R - analysis_code/
01_analysis_from_cellRan , Python, 31 linesger7_outs/ 01B_Py_Scrublet_Per_Samp le.py - analysis_code/
01_analysis_from_cellRan , R, 64 linesger7_outs/ 01C_assemble_seurat_obje ct_with_scrublet.R - analysis_code/
01_analysis_from_cellRan , R, 105 lines, 1 matchger7_outs/ 01D_per_sample_QC.R - analysis_code/
01_analysis_from_cellRan , R, 112 lines, 2 matchesger7_outs/ 01E_total_object_integra tion.R - analysis_code/
02_subclustering_analysi , R, 140 lines, 4 matchess/ 02A_subclustering_templa te.R - analysis_code/
03_proportion_analysis/ , R, 51 lines, 1 match03A_proportion_analysis. R - analysis_code/
04_CellChat/ , R, 57 lines, 1 match04A_template_CellChat_pe r_condition.R - analysis_code/
04_CellChat/ , R, 138 lines, 1 match04B_CellChat_compare.R - README.md, Text, 18 lines
The paper's code and data availability statement is in the Data section.
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Data
No dataset and no data link were found in the paper.
Data Availability Statement
The snRNAseq data generated in this paper is available on the Gene Expression Omnibus with accession number GSE335667. The reanalyzed Gerrits et al. (2021) dataset is available on the Gene Expression Omnibus with accession number GSE148822. Code associated with snRNAseq clustering and CellChat analyses is available at https://
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Version 1, 1 October 2026: the first record
Recorded: type, language, journal, volume, issue, pages, dates, 8 authors, 5 keywords, 12 MeSH terms, 3 funders, 100 references.
Cite
This paper
Kotah, J. M., Lima, M. T., Dragt, E. C., Voulgaroglou, A., Brouwer, N., Holtman, I. R., Kooistra, S. M., & Eggen, B. J. L. (2026). Predicting Relevant Microglia-Associated Cell-Cell Communication Pathways in Alzheimer's Disease: A Role for SPP1. Glia, 74(10), e70210. https://
BibTeX
@article{kotah2026predic
author = {Kotah, Janssen M. and Lima, Marina Trombetta and Dragt, Esmée C. and Voulgaroglou, Asimenia and Brouwer, Nieske and Holtman, Inge R. and Kooistra, Susanne M. and Eggen, Bart J. L.},
title = {{Predicting Relevant Microglia-Associated Cell-Cell Communication Pathways in Alzheimer's Disease: A Role for SPP1}},
journal = {Glia},
year = {2026},
month = oct,
volume = {74},
number = {10},
pages = {e70210},
publisher = {Wiley},
issn = {0894-1491},
doi = {10.1002/
url = {https://
pmid = {42552722},
pmcid = {PMC13438122}
}
RIS
TY - JOUR
AU - Kotah, Janssen M.
AU - Lima, Marina Trombetta
AU - Dragt, Esmée C.
AU - Voulgaroglou, Asimenia
AU - Brouwer, Nieske
AU - Holtman, Inge R.
AU - Kooistra, Susanne M.
AU - Eggen, Bart J. L.
TI - Predicting Relevant Microglia-Associated Cell-Cell Communication Pathways in Alzheimer's Disease: A Role for SPP1
T2 - Glia
J2 - Glia
PY - 2026
DA - 2026/
VL - 74
IS - 10
SP - e70210
SN - 0894-1491
PB - Wiley
DO - 10.1002/
UR - https://
LA - en
ER -
CSL-JSON
{
"id": "10.1002/
"type": "article-journal",
"title": "Predicting Relevant Microglia-Associated Cell-Cell Communication Pathways in Alzheimer's Disease: A Role for SPP1",
"container-title": "Glia",
"author": [
{
"family": "Kotah",
"given": "Janssen M."
},
{
"family": "Lima",
"given": "Marina Trombetta"
},
{
"family": "Dragt",
"given": "Esmée C."
},
{
"family": "Voulgaroglou",
"given": "Asimenia"
},
{
"family": "Brouwer",
"given": "Nieske"
},
{
"family": "Holtman",
"given": "Inge R."
},
{
"family": "Kooistra",
"given": "Susanne M."
},
{
"family": "Eggen",
"given": "Bart J. L."
}
],
"container-title-short":
"volume": "74",
"issue": "10",
"page": "e70210",
"DOI": "10.1002/
"PMID": "42552722",
"PMCID": "PMC13438122",
"ISSN": "0894-1491",
"publisher": "Wiley",
"URL": "https://
"language": "en",
"issued": {
"date-parts": [
[
2026,
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]
}
}
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