Abstract
Background:
Kawasaki disease (KD) is the most common systemic vasculitis syndrome primarily affecting medium-sized arteries, particularly the coronary arteries. Though KD may be associated with immunological problems, the involvement of microRNAs (miRs) has not been fully described.
Methods:
We enrolled 23 KD patients and 12 controls. We performed miR and mRNA microarray analysis of peripheral blood mononuclear cells (PBMCs) isolated from acute KD patients and controls. Continuously, we measured specific miRs, mRNA and the expression of proteins by using reverse-transcriptase PCR (RT-PCR) and enzyme-linked immunosorbent assay (ELISA).
Results:
We identified strikingly high levels of miR-182 and miR-296-5p during the acute febrile phase, and of miR-93, miR-145-5p, miR-145-3p, and miR-150-3p in the defervescence stage, especially in refractory KD patients. The expression of vascular endothelial growth factor A (VEGFA) mRNA, previously reported to be controlled by miR-93, was significantly elevated during the febrile phase and normalized upon treatment, negatively correlating with the expression of miR-93. Further, plasma levels of VEGF-A correlated with PBMC VEGFA mRNA expression.
Conclusion:
Several miRs are highly specific to the acute phase of KD, and may participate in regulating the expression of genes in pathways associated with KD. In particular, miR-93 may participate in regulating expression of VEGF-A and contribute to the pathogenesis of arteritis in acute KD.
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Acknowledgements
We thank our colleagues and collaborating hospitals for always supporting us: Hitoshi Moriuchi, Chikako Sakai, Ikuo Hashimoto, Kentaro Tamura, Kiyoshi Hatasaki, Kentaro Shinozaki, Yasunori Ito, Hisano Nakatsubo, Satoshi Umekawa, Syunji Ishihara, Tatsuya Fuchizawa, Junko Yamamoto, Keiichiro Uese, Osamu Higuchi, Motokazu Nakabayashi, Takashi Kuramoto, Shinichi Tsubata, Seiko Saito, Taketoshi Yoshida, Hirokazu Kanegane, Keisuke Ohtsubo, Toshiko Itazawa, and Yuichi Adachi.
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Saito, K., Nakaoka, H., Takasaki, I. et al. MicroRNA-93 may control vascular endothelial growth factor A in circulating peripheral blood mononuclear cells in acute Kawasaki disease. Pediatr Res 80, 425–432 (2016). https://doi.org/10.1038/pr.2016.93
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DOI: https://doi.org/10.1038/pr.2016.93
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