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Updated: Aug 20, 2025
Induction of Graft-versus-host Disease and In Vivo T Cell Monitoring Using an MHC-matched Murine Model
Published on: August 29, 2012
Differential expression of miRNAs from extracellular vesicles in chronic graft-versus-host disease: A preliminary
Piotr Łacina1, Rachel E Crossland2, Joanna Wielińska1
1Laboratory of Clinical Immunogenetics and Pharmacogenetics, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland.
Insights
Researchers identified specific microRNAs (miRNAs) within extracellular vesicles (EVs) in plasma that may serve as early biomarkers for chronic graft-versus-host disease (cGvHD) following stem cell transplantation.
Area of Science:
- Biomarkers
- Molecular Biology
- Transplantation Immunology
Background:
- Chronic graft-versus-host disease (cGvHD) is a significant complication post-allogeneic hematopoietic stem cell transplantation (HSCT), contributing to non-relapse mortality.
- MicroRNAs (miRNAs) are emerging as potential biomarkers due to their stability and presence in extracellular vesicles (EVs) within bodily fluids.
- Identifying reliable biomarkers for cGvHD is crucial for early detection and improved patient outcomes.
Purpose of the Study:
- To discover specific miRNAs circulating in plasma extracellular vesicles (EVs) that are associated with the development of cGvHD.
- To evaluate the potential of plasma EV miRNAs as diagnostic markers for cGvHD after HSCT.
Main Methods:
- Global miRNA expression profiling was conducted on plasma extracellular vesicles (EVs).
- A pilot cohort included patients with cGvHD and a control group without cGvHD symptoms 90 days post-HSCT.
- Unsupervised hierarchical clustering was used to analyze miRNA expression patterns.
Main Results:
- Distinct miRNA expression profiles were observed between cGvHD patients and controls.
- Three miRNAs showed differential expression: hsa-miR-630 and hsa-miR-374b-5p were downregulated, while hsa-miR-29c-3p was upregulated in cGvHD patients.
- Statistical significance was achieved for all identified differentially expressed miRNAs (p < 0.05).
Conclusions:
- Plasma extracellular vesicle (EV) miRNA profiles show promise as potential biomarkers for detecting chronic graft-versus-host disease (cGvHD) onset.
- Further validation is warranted to establish these miRNAs as reliable clinical markers for cGvHD.
Background:
Chronic graft-versus-host disease (cGvHD) is a complex disorder that typically manifests after allogeneic hematopoietic stem cell transplantation (HSCT). It is a major cause of non-relapse mortality, which makes finding biomarkers associated with its occurrence a priority. Recent studies increasingly indicate that microRNAs (miRNAs, short regulatory RNA molecules) can be used as biomarkers of various disorders. They can circulate in patients' bodies encapsulated within extracellular vesicles (EVs).
Objectives:
To identify miRNAs associated with the occurrence of cGvHD in EVs isolated from the plasma of patients after allogeneic HSCT.
Material And Methods:
We performed global miRNA expression profiling in a pilot cohort of 3 cGvHD cases and 4 non-cGvHD patients without disease symptoms 90 days after the transplantation (control group).
Results:
The 2 groups were naturally clustered according to their miRNA profiles using unsupervised hierarchical clustering analysis. We identified 3 miRNAs that were differentially expressed in the cGvHD patients compared to the non-cGvHD patients. The levels of hsa-miR-630 and hsa-miR-374b-5p were lower in the cGvHD patients: 4.1-fold (p = 0.002) and 2.7-fold (p = 0.044), respectively. In contrast, the levels of hsa-miR-29c-3p were 5.8-fold higher (p = 0.004).
Conclusions:
Our results suggest that miRNA profiles from plasma EVs may act as markers of cGvHD onset.
