Abstract
Background
Celiac disease (CD) is a chronic immune-mediated enteropathy and a cytokine network is involved in its pathogenesis. Interleukin-2 (IL-2) has a key role in the adaptive immune pathogenesis of CD and has been reported to be one of the earliest cytokines to be elicited after gluten exposure by CD patients. This study aimed at investigating the expression level of IL-2 and functionally related genes SOCS1 and TBX21 in active and treated CD patients compared to controls.
Methods and results
Peripheral blood (PB) samples were collected from 40 active CD (ACD), 100 treated CD, and 100 healthy subjects. RNA was extracted, cDNA was synthesized and mRNA expression levels of the desired genes were investigated by Real-time PCR. The gene–gene interaction network was also constructed by GeneMANIA. Our results showed a higher PB mRNA expression of IL-2 in ACD patients compared to controls (p = 0.001) and treated CD patients (p˂0.0001). The mRNA expression level of TBX21 was also significantly up-regulated in ACD patients compared to controls (P = 0.03). SOCS1 mRNA level did not differ between active and treated CD patients and controls (p˃0.05) but showed a significant correlation with the patient’s aphthous stomatitis symptom (r = 0.37, p = 0.01). ROC curve analysis suggested that the use of IL-2 levels can reach a high specificity and sensitivity in discriminating active CD patients.
Conclusions
The PB level of IL-2 has the potential to be introduced as a diagnostic biomarker for CD. Larger cohort studies, including pediatric patients, are needed to achieve more insights in this regard.
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Abbreviations
- ACD:
-
Active celiac disease
- B2M:
-
Beta-2-microglobulin
- CD:
-
Celiac disease
- cDNA:
-
Complementary DNA
- GGI:
-
Gene-gene interaction
- HLA:
-
Human leukocyte antigens
- IFN-γ:
-
interferon gamma
- IL:
-
Interleukin
- JAK:
-
Janus kinase
- NCBI:
-
National Biotechnology Information Center
- ONECUT2:
-
one cut domain family member 2
- PB:
-
Peripheral blood
- RNA:
-
Ribonucleic acid
- ROC:
-
Receiver operating characteristic
- SD:
-
Standard deviation
- SOCS1:
-
Suppressors of cytokine signaling 1
- STAT:
-
Signal transducer and activator of transcription
- TBX21:
-
T-box transcription factor
- TFH:
-
T follicular helper
- Th:
-
T helper
- TNF:
-
Tumor necrosis factor
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Acknowledgements
The authors would like to acknowledge the Gastroenterology and Liver Diseases Research Center of Shahid Beheshti University of Medical Sciences for their support.
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Research reported in this publication was supported by Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Design of experiments by MRN. Analysis of data by NA and FG. First draft of manuscript by FG and EA and subsequent drafting by MRN, MH, AM, NA and HAA. All authors read and approved the final manuscript.
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Ganjali, F., Asri, N., Rostami-Nejad, M. et al. Expression analysis of IL-2, TBX21 and SOCS1 in peripheral blood cells of celiac disease patients reveals the diagnostic potential of IL-2. Mol Biol Rep 50, 4841–4849 (2023). https://doi.org/10.1007/s11033-023-08394-5
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DOI: https://doi.org/10.1007/s11033-023-08394-5