Exploration of the Regulatory Effects of PSORI-CM01 and Yin Xie Ling on microRNAs in the Peripheral Blood Monocytes of Patients with Blood Stasis Syndrome of Psoriasis Vulgaris

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Background: Traditional Chinese medicines (TCMs) have been used to manage psoriasis since thousands of years and are associated with advantages such as long remission period and few side effects. PSORI-CM01 is a clinical TCM formula for treating the blood stasis syndrome of psoriasis vulgaris. It is optimised from Yin Xie Ling, a herbal preparation formulated by the Chinese national medical master Xuan Guowei. In the present study, we used microRNA (miRNA) chip technology to analyse the effects of PSORI-CM01 and Yin Xie Ling on miRNA differential expression in the peripheral blood monocytes of patients with blood stasis syndrome of psoriasis vulgaris.Methods: Blood samples collected from healthy subjects and patients with blood stasis syndrome of psoriasis vulgaris were obtained from the Department of Dermatology in the Guangdong Provincial Hospital of Chinese Medicine. These samples were obtained before and after treatment with PSORI-CM01 or Yin Xie Ling. Differentially expressed miRNAs were analysed by performing miRNA expression microarray to evaluate the mechanisms underlying the effects of the two formulations.Results: It was found that hsa-miR-3184-3p, hsa-miR-3653-3p, hsa-miR-20a-3p, hsa-miR-5681b, and hsa-miR-26a-5p were differentially expressed between the PSORI-CM01 and healthy control groups as well as between the Yin Xie Ling and healthy control groups before treatment, without any significant differences in their expression after treatment. The results revealed that the therapeutic effect of PSORI-CM01 on psoriasis was mediated mainly via the regulation of the adherens junction, thyroid hormone signalling, and proteoglycans in cancer pathways, whereas that of Yin Xie Ling was mediated mainly via the regulation of the endoplasmic reticulum protein processing, Hippo signalling, adherens junction, thyroid hormone signalling, cell cycle, proteoglycans in cancer, p53 signalling, oocyte meiosis, and unsaturated fatty acid biosynthesis pathways.Conclusions: The findings demonstrate that PSORI-CM01 and Yin Xie Ling are beneficial for treating blood stasis syndrome of psoriasis vulgaris through the regulation of hsa-miR-20a-3p and hsa-miR-3184-3p expression and, consequently, through the adherens junction, thyroid hormone signalling, and proteoglycans in cancer pathways.Trial registration: Registration number, ChiCTR-TRC-14005185; Date of registration, 8 August 2014.