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Deciphering the Transcriptomic Heterogeneity of Duodenal Coeliac Disease Biopsies
Johannes Wolf1,2, Edith Willscher3, Henry Loeffler-Wirth3
1Department of Laboratory Medicine at Hospital "St. Georg" Leipzig, 04129 Leipzig, Germany.
International Journal of Molecular Sciences
|April 3, 2021
Summary
This study reveals distinct transcriptomic profiles in pediatric coeliac disease (CD), identifying subgroups associated with disease severity and inflammation. These findings offer insights into CD heterogeneity and potential diagnostic markers.
Area of Science:
- Immunology
- Genetics
- Gastroenterology
Background:
- Coeliac disease (CD) is a heterogeneous autoimmune disorder triggered by gluten, with poorly understood reasons for varied outcomes.
- Transcriptome studies in CD patient biopsies are limited, hindering a deep understanding of disease mechanisms.
Purpose of the Study:
- To perform a high-resolution transcriptomic analysis of duodenal biopsies from pediatric CD patients and controls.
- To identify distinct transcriptional patterns associated with CD severity and inflammation.
Main Methods:
- Transcriptome analysis of duodenal biopsies from 24 children with active CD and 21 controls.
- Cell type deconvolution to analyze immune cell composition.
- Self-organizing maps for high-resolution transcriptome landscape portrayal.
Main Results:
- CD patient transcriptomes segregated into three groups: control, CD-low, and CD-high, correlating with disease severity.
- The CD-high group exhibited higher Marsh stages and cell cycle rates, indicating villous atrophy.
- Asymmetric miRNA and long non-coding RNA patterns were observed, suggesting epigenetic regulation.
Conclusions:
- Transcriptomic heterogeneity in CD is linked to distinct subgroups and disease severity.
- Interferon gamma signaling gene expression can differentiate CD from non-CD cases.
- Understanding these transcriptional patterns may elucidate CD etiology and disease course.
