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LTBR-mediated immunomodulation of the tumor microenvironment promotes anti-tumor responses

GSE243170 Mus musculus (mouse) RNA-seq (gene expression) 20 samples Submitted 2024/08/08 Platform GPL24247
At a glance

RNA-seq (gene expression) · mouse · 20 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
Mus musculus (mouse)
Samples
20 samples: 5 × EV_ISO vs 5 × EV_LTB vs 5 × LTα_ISO vs 5 × LTα_LTBGroups 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
LTβR Agonism Promotes Antitumor Immune Responses via Modulation of the Tumor MicroenvironmentCancer research · 2024
Summary (written by the submitters)
The presence of high endothelial venules (HEV) and tertiary lymphoid structures (TLS) in solid tumors is correlated with favorable prognosis in many cancer types and has been associated with better treatment responses to immune-checkpoint blockade (ICB). However, the molecular mechanisms underlying intratumoral HEV and TLS formation and their contribution to anti-tumor responses remain unclear.
Read the full summary ↓
Lymphotoxin beta receptor (LTBR) signaling is a critical regulator of lymph node organogenesis and when combined with antiangiogenic and ICB treatment can augment tumor-associated HEV formation. Here we demonstrate that LTBR signaling modulates the tumor microenvironment via multiple mechanisms to promote anti-tumor T cell responses. Systemic activation of the LTBR pathway via agonistic antibody treatment induced tumor-specific HEV formation, upregulated the expression of TLS-related chemokines, and enhanced dendritic cell (DC) and T cell infiltration and activation in syngeneic tumor models. In vitro studies confirmed direct effects of LTBR agonism on DC activation and maturation and associated DC- mediated T cell activation. Single agent LTBR agonist treatment inhibited syngeneic tumor growth in a CD8+ T cell- and HEV-dependent manner; and the LTBR agonist enhanced anti-tumor effects of anti-PD-1 and CAR T cell therapies, respectively. An in vivo tumor screen for TLS-inducing cytokines revealed that the combination of LTBR agonism and lymphotoxin alpha (LT⍺) expression promoted robust intratumoral TLS induction and enhanced tumor responses to anti-CTLA-4 treatment. Collectively, this study highlights crucial functions of LTBR signaling in modulating the tumor microenvironment and inform future HEV/TLS- based strategies for cancer treatments.
Published in
LTβR Agonism Promotes Antitumor Immune Responses via Modulation of the Tumor Microenvironment
An D, Chen G, Cheng WY et al. · Cancer research 2024 · PMID 39137402 · doi:10.1158/0008-5472.CAN-23-2716
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 GSE243170_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 PRJNA1016471 and SRA study SRP460370. Searching any of these in the dataset finder brings you back here.

Study design
5 × EV_ISO vs 5 × EV_LTB vs 5 × LTα_ISO vs 5 × LTα_LTB

Supports a between-group comparison across 20 samples.

How we read this: 4 replicated groups read from 20 sample titles; they account for 20 of them. 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
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