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Increased CCL2/CCR2 axis in MYC/BCL2 double-expressor DLBCL promotes tumor progression by increasing M2 macrophages

GSE252690 Homo sapiens (human) RNA-seq (gene expression) 28 samples Submitted 2024/09/30 Platform GPL16791
At a glance

RNA-seq (gene expression) · human · 28 samples

What it is
RNA-seq (gene expression)Gene activity measured by sequencing. The summary does not mention single-cell work, so this is most likely bulk: one average per sample, the usual starting point for comparing groups.
Organism
Homo sapiens (human)
Topic
Diffuse large B-cell lymphomaThis series is part of our curated briefing on it.
Samples
28 samples: 28 samples, each with a distinct title — no replicated groupsGroups are read from the sample names, not from the paper. Check the list below.
Data you can get
A processed table (series matrix) and supplementary files from NCBI; the raw sequencing reads from ENA. Which of these hold counts depends on the study, so check the file list.
Paper
Increased CCL2/CCR2 axis promotes tumor progression by increasing M2 macrophages in MYC/BCL2 double-expressor DLBCLBlood advances · 2024
Summary (written by the submitters)
The pathogenesis of c-MYC and BCL2 double-expressor diffuse large B cell lymphoma (DE DLBCL) remains unclear, particularly in terms of the tumor microenvironment. We aimed to analyze the immune microenvironment of DE DLBCLs to understand the basis of DE-DLBCL's aggressiveness and identify potential therapeutic targets. To discover the key features of DE-DLBCL, fourteen non-DE and 14 DE DLBCL samples underwent RNA-seq analysis.
Read the full summary ↓
For validation, formalin-fixed paraffin-embedded tissues from 126 patients were immunostained for CD3, CD4, CD8, FOXP3, CD68 and CD163. Two c-MYClow/BCL2low DLBCL (SU-DHL-10 and HT) and 2 c-MYChigh/BCL2high DLBCL cell lines (DOHH2 and OCI-LY8) were used for in vitro assays. The prognostic impact of differential chemokine secretion and immune profiles was evaluated in a mouse tumor model. RNA-seq analysis revealed significantly higher CCL2 and CCR2 mRNA in DE DLBCLs (Padj < 0.05). Public datasets showed higher M2/macrophage ratio and lower T cell infiltration in DE DLBCLs (P < 0.05). Immunohistochemistry confirmed higher M2 macrophages and M2/total macrophage ratio in DE DLBCL (P=0.010 and P=0.098, respectively). In vitro, c-MYChigh/BCL2high cell lines exhibited increased CCL2 secretion, as seen in RNA-seq analysis. Knockdown and overexpression studies identified that MYC and BCL2 overexpression increased CCL2 secretion by upregulation of NF-κB p65 subunit, and the increased CCL2 secretion was crucial for M2 polarization. In mouse tumor models, CCL2 was related to aggressive tumor growth and an immunosuppressive tumor microenvironment. In conclusion, the increased CCL2/CCR2 axis confers aggressiveness of DE DLBCLs by increasing M2 polarization.
Published in
Increased CCL2/CCR2 axis promotes tumor progression by increasing M2 macrophages in MYC/BCL2 double-expressor DLBCL
Kim S, Jeong H, Ahn HK et al. · Blood advances 2024 · PMID 39293078 · doi:10.1182/bloodadvances.2024013699
This dataset
Download · which file do I need?

Direct links to NCBI and ENA, no account and no request form. Pick by what you want to do: take the small processed table to look, the supplementary files to re-analyse, or the original raw data to start over.

1 · Just have a look

Processed table

The series matrix: one table of values per sample as the submitters processed it. The smallest download, and it opens in Excel or R. Start here to see what the data look like.

2 · Re-analyse it

Supplementary files

The count tables and other files the authors uploaded. Take only the samples you need, or the whole study as GSE252690_RAW.tar (it can run to tens of gigabytes).

3 · Start from the raw reads

Raw sequencing reads

The original FASTQ files, straight from the sequencer, held at ENA. Large, and you align them yourself, so only choose this if you need to re-process the study from scratch.

What the files usually look like: For RNA-seq the counts are usually a table among the supplementary files (look for 'counts', 'expression', 'FPKM' or 'TPM' in the file name). The series matrix of a sequencing study is sometimes nearly empty.

Also filed as BioProject PRJNA1062058 and SRA study SRP482322. Searching any of these in the dataset finder brings you back here.

Study design
28 samples, each with a distinct title — no replicated groups

Any grouping that defines a comparison lives in the sample characteristics, which GEO records separately from the titles.

How we read this: Read from 28 sample titles: 28 distinct titles with little repetition. These groups are guessed from the sample names, not taken from the paper, so check them against the sample list below before relying on them.

Samples in this study
More Diffuse large B-cell lymphoma datasets

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