@article { author = {Aslani, Mohammad Reza and Jafari, Zahra and Rahbarghazi, Reza and Rezaie, jafar and Delkhosh, Aref and Ahmadi, Mahdi}, title = {Effects of crocin on T-bet/GATA-3 ratio, and miR-146a and miR-106a expression levels in lung tissue of ovalbumin-sensitized mice}, journal = {Iranian Journal of Basic Medical Sciences}, volume = {25}, number = {10}, pages = {1267-1274}, year = {2022}, publisher = {Mashhad University of Medical Sciences}, issn = {2008-3866}, eissn = {2008-3874}, doi = {10.22038/ijbms.2022.65622.14433}, abstract = {Objective(s): Although various studies have revealed the beneficial effects of crocin (derived from saffron), such as anti-inflammatory, anti-cancer, antioxidant, and immune modulator, however, its exact mechanism is unknown. The present study aimed to investigate the effect of crocin on the expression ratio of T-bet/GATA-3 as an indicator of altered immune responses in the lung tissue of ovalbumin (OVA)-sensitized mice. In addition, the effect of crocin on the expression level of miR-146a and miR-106a in the lung tissue OVA-sensitized mice was investigated.Materials and Methods: Mice were randomly divided into five groups (n=6): Control; OVA, OVA + Crocin 25, OVA + Cro 50, and OVA + Cro100 groups. Crocin was administrated intraperitoneally at doses of 25, 50, and 100 mg/kg for five consecutive days. One day after asthma induction, animals were euthanized, and lungs were sampled for pathological and gene expression analysis.Results: OVA-sensitization led to increased inflammation and histopathological changes in the lung tissue of mice. In addition, GATA-3 expression increased (P<0.001) and T-bet expression decreased (P<0.001) in OVA-sensitized groups. The T-bet/GATA3 ratio was also reduced markedly in asthma groups (P<0.001). Furthermore, increased expression of miR-146a and miR-106a levels was evident in the lung tissue of OVA-sensitized mice (P<0.001 for both). Intervention with high concentrations of crocin (50 and 100 mg/kg) significantly reduced airway inflammation, GATA-3 expression, miR-146a expression, and miR-106a expression and corrected the T-bet/GATA-3 ratio (P<0.05 to P<0.001).Conclusion: Treatment with crocin led to a decrease in the severity of lung inflammation in OVA-sensitized mice, which is probably through the reduction of the T-bet/GATA-3 ratio, and mir-146a and mir-106a expression level.}, keywords = {Asthma,Gata-3,microRNA-106a,microRNA-146a,T-box transcription factor}, url = {https://ijbms.mums.ac.ir/article_21060.html}, eprint = {https://ijbms.mums.ac.ir/article_21060_be89d8d700d9ff757a5b292c0619b562.pdf} }