Foundry120 atlas

Single-Cell Analyses Elucidate the Cellular and Molecular Landscape of Ulcerative Colitis

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Dataset overview

Participants 16
Samples None
Reuse readiness 6.3/10 evidence-backed score

Heterogeneity and clonal relationships of adaptive immune cells in ulcerative colitis revealed by single-cell analyses.

Abstract

Inflammatory bowel disease (IBD) encompasses a spectrum of gastrointestinal disorders driven by dysregulated immune responses against gut microbiota. We integrated single-cell RNA and antigen receptor sequencing to elucidate key components, cellular states, and clonal relationships of the peripheral and gastrointestinal mucosal immune systems in health and ulcerative colitis (UC). UC was associated with an increase in IgG1<sup>+</sup> plasma cells in colonic tissue, increased colonic regulatory T cells characterized by elevated expression of the transcription factor ZEB2, and an enrichment of a γδ T cell subset in the peripheral blood. Moreover, we observed heterogeneity in CD8<sup>+</sup> tissue-resident memory T (T<sub>RM</sub>) cells in colonic tissue, with four transcriptionally distinct states of differentiation observed across health and disease. In the setting of UC, there was a marked shift of clonally related CD8<sup>+</sup> T<sub>RM</sub> cells toward an inflammatory state, mediated, in part, by increased expression of the T-box transcription factor Eomesodermin. Together, these results provide a detailed atlas of transcriptional changes occurring in adaptive immune cells in the context of UC and suggest a role for CD8<sup>+</sup> T<sub>RM</sub> cells in IBD.

Study facts

Organism
Homo sapiens
Platform
10X Genomics
Age group
Disease groups
Anatomical sites
rectum, ileum, peripheral blood

Data availability

  • Raw counts
  • Processed matrix

File types CSVTSV

Files and samples

Strengths & limitations for reuse

Strengths

  • Raw reads are advertised
  • Raw counts are advertised
  • Processed matrices are advertised
  • Cell metadata are advertised
  • Participant mapping is available
  • Participant counts are documented
Extraction evidence & provenance

Each extracted field is shown with the source excerpt and location used to resolve it.

Assay

FieldValueEvidence
assay.assay_type single-cell RNA-seq
Single-cell RNA-seq and BCR/TCR repertoire analyses of immune cell from 15 patients

Section series.series_overall_design, offset —

assay.library_chemistry 10X Genomics Single Cell V(D)J + 5’ Gene Expression
Single cell libraries were prepared according to the protocol for 10X Genomics for Single Cell V(D)J + 5’ Gene Expression.

Section samples.extract_protocol, offset —

assay.platform 10X Genomics
Single cell libraries were prepared according to the protocol for 10X Genomics for Single Cell V(D)J + 5’ Gene Expression.

Section samples.extract_protocol, offset —

assay.reference_genome hg38
Genome_build: hg38

Section samples.data_processing, offset —

assay.sequencing_type scrna_seq
We generated an integrated single-cell (scRNA-seq, scTCR-seq, and scBCR-seq) resource dataset

Section series, offset —

Cohort

FieldValueEvidence
cohort.total_participants 16 computed
16 distinct subject/participant IDs across GEO samples

Section GEO family SOFT, offset —

Data_Assets

FieldValueEvidence
data_assets.cell_metadata True
GSE125527_cell_metadata.csv.gz

Section geo_document, offset —

data_assets.open_access True
Public on Jul 16 2020

Section series, offset —

data_assets.participant_metadata True
GSE125527_oldPatientId-newPatientId.csv.gz

Section geo_document, offset —

data_assets.processed_matrix True
GSE125527_UMI_cell_table_sparse.csv.gz

Section geo_document, offset —

data_assets.raw_counts True
GSE125527_UMI_cell_table_sparse.csv.gz

Section geo_document, offset —

data_assets.raw_reads True
GSE125527_RAW.tar

Section geo_document, offset —

Processing

FieldValueEvidence
processing.quality_control_reported True
Only cells with > 400 genes,UMI > 0,and 0.5% ~ 30% of their UMIs mappingto mitochondria genes were kept for downstream analysis.

Section samples, offset —

Specimens

FieldValueEvidence
specimens.anatomical_sites ['rectum', 'ileum', 'peripheral blood']
source_name": "Rectum immune cell"

Section samples, offset —

specimens.participant_to_sample_mapping_available True
"subject #": "C9"

Section samples, offset —

specimens.specimen_type biopsy
Four intestinal biopsies were obtained with endoscopic biopsy forceps from the rectum or ileum

Section samples.extract_protocol, offset —