RESUMO
Delvestidine (DLTD) is a monomeric compound isolated from Aconitum leucostomum Worosch, a widely used medicine for local treatment of rheumatoid arthritis (RA). Studies have shown that Aconitum leucostomum Worosch. can inhibit maturation of bone marrow-derived dendritic cells (BMDCs). Further, microRNAs (miRNAs) have regulatory effects on DC maturity and function. However, the mechanism underlying DLTD effects on DC maturity and RA remains to be elucidated. This study investigated whether DLTD-mediated inhibition of DC maturation is regulated by miRNAs. LPS-induced mature BMDCs were treated with DLTD for 48 h. CD80 and CD86 expression on BMDCs was detected by flow cytometry, and levels of inflammatory factors IL-6, IL-23, IL-1ß, and TNF-α were detected by ELISA and PCR. Further, gene expression and miRNA expression profiles were investigated by bioinformatics analysis and verified by PCR. DLTD was found to inhibit CD80 and CD86 expression on the surface of BMDCs and secretion of inflammatory factors IL-6, IL-23, IL-1ß, and TNF-α. In total, 54 differentially expressed miRNAs were detected, including 29 up-regulated and 25 down-regulated miRNAs after DLTD treatment. Analysis of biological information revealed that the differentially expressed target genes mainly regulated biological processes, including cell differentiation, cell cycle, and protein kinase complexes. Additionally, miR-511-3p downstream targets Calcr, Fzd10, and Eps8, were closely related to BMDCs maturation. DLTD may induce BMDCs maturity through regulation of miRNAs that affect Calcr, Fzd10, and Eps8 gene signals.
Assuntos
Aconitum/química , Células da Medula Óssea/imunologia , Células da Medula Óssea/metabolismo , Células Dendríticas/imunologia , Células Dendríticas/metabolismo , MicroRNAs/imunologia , MicroRNAs/metabolismo , Proteínas Adaptadoras de Transdução de Sinal/efeitos dos fármacos , Proteínas Adaptadoras de Transdução de Sinal/genética , Animais , Antígeno B7-1/efeitos dos fármacos , Antígeno B7-1/metabolismo , Antígeno B7-2/efeitos dos fármacos , Antígeno B7-2/metabolismo , Proteína Semelhante a Receptor de Calcitonina/efeitos dos fármacos , Proteína Semelhante a Receptor de Calcitonina/genética , Diferenciação Celular , Células Cultivadas , Biologia Computacional , Citocinas/genética , Citocinas/metabolismo , Receptores Frizzled/efeitos dos fármacos , Receptores Frizzled/genética , Regulação da Expressão Gênica/efeitos dos fármacos , Lipopolissacarídeos/toxicidade , Camundongos Endogâmicos BALB C , MicroRNAs/genética , Antígenos de Histocompatibilidade Menor/efeitos dos fármacos , Antígenos de Histocompatibilidade Menor/genética , Receptores de Citocinas/efeitos dos fármacos , Receptores de Citocinas/genéticaRESUMO
Numerous honeybee products are used in traditional medicine. The best-known honeybee products are the honey, the propolis and the royal jelly. Drone milk is a relatively little-known honeybee product. Although, drone milk is traditionally used to treat infertility and to promote vitality in both men and women in certain countries, the literature furnishes no information concerning effects of the drone milk. The oestrogenic and androgenic effects of drone milk have recently been reported in rats and the effective compounds have also been identified. The aim of this study was to determine the putative gestagenic effect of raw drone milk in rats. Maintenance of pregnancy assays revealed that drone milk was able to increase the number of surviving fetuses. This results suggested some gestagenic effects. This effect was confirmed by RT-PCR and Western blot methods in which the mRNA and protein expressions of gestagen-dependent CRLR (Calcitonin Receptor-Like Receptor) peptide were determined. To determine the efficacy of gestagenic effect of drone milk, spironolactone (weak gestagen compound) was used. The combination of drone milk and spironolactone showed more potent gestagenic effect. These results lead us to suppose that raw drone milk shows weak gestagenic effect and this effect can be increased by another weak gestagen. Further studies are required to clarify the gestagenic mechanisms of action of drone milk.
