FOOD CHEMISTRY
·
2020
·
IF 6.306
Shufen Wu,Xiaochan Wang,Yuxin Bao,Chuanying Zhang,Huanhuan Liu,Zhenjing Li,Mianhua Chen,Changlu Wang,Qingbin Guo,Xin Peng
Monascin (MS) is a yellow lipid-soluble azaphilonoid pigment identified from Monascus -fermented products with promising biological activities. This work studied interactions between MS and bovine serum albumin (BSA) as well as their influences on the antioxidant activity of MS. Experimental results demonstrated that the fluorescence emission of BSA was quenched by MS via static quenching mechanism and the formed BSA-MS complex was mainly maintained by hydrophobic and hydrogen bond interactions. Meanwhile, the probable binding pocket of MS located near site I of BSA and the corresponding conformational and structural alterations of BSA were determined. Furthermore, the molecular modeling approach was performed to understand the visual representation of binding mode between BSA and MS. It was noticeable that the BSA-MS complex exhibited reduced DPPH radical-scavenging ability, which might be attributed to the restraining effect of BSA on the relevant reaction pathways involved in antioxidation by MS.
研究领域:
生物化学
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食品科学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Bio Materials
·
2025
·
IF 4.7
Zhao Wang,Khawar Ali Shahzad,Ding Li,Boyu Cai,Zilin Huang,Maoxiang Xu,Jiaojiao Li,Dong Chen,Fei Tan
Monascin, a natural and safe drug, exhibits potent anti-inflammatory, hypolipidemic, and antioxidative effects. However, their therapeutic potential and underlying mechanisms in allergic rhinitis (AR) remain unexplored. The intranasal delivery of monascin for treating AR faces the challenge of rapid clearance. Herein, to achieve sustained and prolonged release, we developed monascin-encapsulated poly(lactic co glycolic acid) nanoparticles (PLGA-MS) by the mechanical double emulsion technique, enabling effective local delivery of monascin for the treatment of AR. Histopathological staining, flow cytometry, ELISA, and network pharmacology were used to assess therapeutic effects and potential mechanisms of monascin in treating AR. In vitro and in vivo experiments revealed that PLGA-MS exhibited enhanced stability, excellent drug encapsulation capacity, and sustained drug release. PLGA-MS treatment showed a significant therapeutic effect in AR mice by decreasing inflammatory cells in nasal tissue and regulating IgE, histamine, and a variety of cytokines. PLGA-MS treatment decreased T helper 2 cells (Th2) and T helper 17 cells (Th17) while promoting and increasing Tregs (regulatory T cells). Further analysis showed elevated levels of IL-10 and TGF-β expression in Tregs post-treatment. Results of the CCK-8 assay, pathological analysis of vital organs, and serum analysis of liver and kidney functions demonstrated the biosafety of PLGA-MS. Additionally, network pharmacology identified immune response pathways that may support PLGA-MS’s immunomodulatory effects in AR. Our study presented a biomaterial-facilitated intranasal delivery system for monascin, offering an effective therapeutic strategy for AR.
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DOI
PubMed
高影响因子
Foods
·
2024
·Vol. 13
·期 10
·1573
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IF 4.7
Shufen Wu,Changyan Dong,Meihui Zhang,Yi Cheng,Xiaobo Cao,Benxu Yang,Chao Li,Xin Peng
Red yeast rice dietary supplements have been proven to ameliorate hyperglycemia, but the mechanism was unclear. In this work, ankaflavin (AK) and monascin (MS), as typical pigments derived from red yeast rice, were found to exert noteworthy inhibitory ability against α-glucosidase, with an IC50of 126.5 ± 2.5 and 302.6 ± 2.5 μM, respectively, compared with acarbose (IC50= 341.3 ± 13.6 μM). They also exhibited mixed-type inhibition of α-glucosidase in vitro and caused fluorescence quenching through the static-quenching process. Molecular-docking studies indicated that AK and MS bind to amino acid residues outside the catalytic center, which induces structural changes in the enzyme, thus influencing its catalytic activity. The anti-glycation ability ofMonascus-fermented products was evaluated, and they exhibited a high inhibition rate of 87.1% in fluorescent advanced glycation end-product formation at a concentration of 0.2 mg mL−1, while aminoguanidine showed a rate of 75.7% at the same concentration. These results will be significant in broadening the application scope ofMonascuspigments, especially AK and MS, in treating type 2 diabetes.
研究领域:
药理学
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营养学
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糖尿病研究
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产品关联
DOI
PubMed
高影响因子
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