FOOD CHEMISTRY
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2024
·
IF 8.5
Min Zhuang,Jiaqing Li,Anqi Wang,Gaoheng Li,Sheng Ke,Xuanyu Wang,Ming Ning,Zhanwu Sheng,Bing Wang,Zhongkai Zhou
Bioactive peptide’s development is facing two challenges in terms of its lower yield and limited understanding of structurally orientated functionality. Therefore, peptides were prepared from wheat bran via a cocktail enzyme for achieving a higher level of hydrophobic amino acids than traditional method. The obtained peptides exhibited great antioxidant activities against H 2 O 2 -induced oxidative stress in HepG2 cells. Among them, 91 bioactive peptides were selected through the virtual screening, and their N -terminal and C -terminal contained many hydrophobic amino acids. Then the peptides with capacity to interact with Keap1 were identified by in silico simulation, because Keap1 acts as a sensor of redox insults. The results revealed that peptides DLDW and DLGL demonstrated the highest binding affinities, and a bridge was formed between Asp of DLGL and Arg415 of Klech domain, contributing to interfering Keap1-Nrf2 interaction. These findings implied a potential application of wheat bran peptides as nutraceuticals and health-promoting ingredients.
研究领域:
食品科学
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分子生物学
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营养保健品
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药理学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
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IF 4.784
Qiang Chu,Ruoyi Jia,Meng Chen,Yonglu Li,Xin Yu,Yaxuan Wang,Wen Chen,Xiang Ye,Yangyang Liu,Yong Jiang,Xiaodong Zheng
Tetrastigma hemsleyanum Diels et Gilg, a rare herbal plant native to China, possesses high medicinal value. More researches have focused on the flavones in the tubers of Tetrastigma hemsleyanum whereas polysaccharides attract few attentions. In this study, a purified polysaccharide (TTP-1) with the average molecular weights of 478.33 kDa was extracted from Tetrastigma hemsleyanum and conducted multiple analysis to identify its structural information. In vitro , TTP-1 could suppress the inflammation, cytotoxicity, genotoxicity, mitochondrial dysfunction and oxidative damage induced by LPS in RAW264.7 cells. Meanwhile, TTP-1 could attenuate inflammation via COX-2, iNOS, MAPKs pathways and ameliorate oxidative damage through Nrf2-Keap1, Sirt1-FoxO1 pathways in RAW264.7 cells. In vivo , the inflammation induced by LPS triggered the suppression of survival ratio and growing development, as well as the restrain of athletic ability in Caenorhabditis elegans . The treatment of TTP-1 reversed the situation induced by LPS. In a word, TTP-1 could ameliorate LPS-induced inflammation both in vitro and in vivo .
研究领域:
药理学
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免疫学
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分子生物学
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DOI
PubMed
高影响因子
CHEMICO-BIOLOGICAL INTERACTIONS
·
2023
·
IF 5.1
Yiqiu Liu,Musen Lin,Xingrui Mu,Lin Qin,Junyu Deng,Ye Liu,Xingqian Wu,Wenjie He,Huiwen Pang,Felicity Han,Chengxin Sun,Xuqiang Nie
S olanesol is a tetra sesquiterpene enol with various biological activities . Modern medical studies have confirmed that solanesol has the function of lipid antioxidation and scavenges free radicals. This study aimed to investigate the protective effect of solanesol against oxidative damage induced by high glucose on human normal hepatocytes (L-02 cells) and its possible mechanism. The results showed that solanesol could effectively improve the decrease of cell viability induced by high glucose, decrease the contents of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and lactate dehydrogenase (LDH) in the extracellular medium, increased the enzyme activities of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), catalase (CAT), balanced the level of reactive oxygen species (ROS) in cells, inhibited lipid peroxidation of all kinds of biological membranes, and restored mitochondrial membrane potential (MMP). In addition, Solanesol also inhibited the expression of Keap1, promoted the nuclear translocation of Nrf2 by hydrogen bonding with Nrf2, and activated the expression of downstream antioxidant factors NQO1 and HO-1. Altogether, these findings suggest that solanesol may be a potential protectant against diabetic liver injury.
研究领域:
药理学
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细胞生物学
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分子生物学
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糖尿病研究
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DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Nan Li,Ruiyan Wang,Wenwen Li,Qian Du,Zeyuan deng,Yawei Fan,Liufeng Zheng
Vitexin, which exists in various medicinal plants and food sources, has recently received increasing attention because of its anti-inflammatory properties. This study aims to identify the protein target of vitexin that ameliorates dextran sulfate sodium (DSS)-induced colitis. The results showed that vitexin not only alleviated the clinical symptoms and colonic damage in mice with DSS-induced colitis but also suppressed the colonic production of inflammatory cytokines (IL-1β, IL-6, ICAM, and VCAM) and enhanced the expression of barrier-associated proteins (ZO-1, Occludin, and E-cadherin). Based on tissue thermal proteome profiling (Tissue-TPP) and molecular docking, OLA1 was creatively identified as a potential protein target for vitexin. Further siRNA-mediated knockdown of the OLA1 gene in Caco-2 cells demonstrated the ability of OLA1 to increase Nrf2 protein expression and, thus, mediated the anti-inflammatory effects of vitexin. Interaction of the OLA1–vitexin complex with Keap1 protein to disrupt the Keap1-Nrf2 interaction may be required for activating Nrf2. Our findings revealed a novel role for OLA1 as a protein target of vitexin that contributes to its anti-inflammatory action by activating Nrf2, which may provide a promising molecular mechanism for novel therapeutic strategies to treat colitis and the associated systemic inflammation.
研究领域:
药理学
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免疫学
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分子生物学
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胃肠病学
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产品关联
DOI
PubMed
高影响因子
International Journal of Nanomedicine
·
2026
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IF 8.7
Feifei Chen,Hui Jiang,Xueyi Song,Jianfeng Wang,Xu Ma,Quan Zhou,Abdullah Al Mamun,Lingna Li,Yunfang Zhou,Hongbin Xu,Shuanghu Wang
Introduction: Cerebral ischemic stroke has high mortality and disability rates with limited targeted therapeutic strategies. Biomimetic nanocarriers can optimize drug delivery efficiency and exert neuroprotection effects, providing a promising strategy for ischemia-reperfusion injury treatment.Methods: Hollow mesoporous silica nanoparticles (HMSNs) were synthesized via an improved Stoer method and loaded with imperatorin (IMP). Subsequently, neutrophil cell membranes (NCM) extracted from DMSO-induced HL-60 cells were coated onto the nanoparticles to construct NCM/IMP@HMSNs. Nanomaterial characterization was carried out. In vitro oxygen-glucose deprivation/reoxygenation (OGD/R) models in SH-SY5Y cells and in vivo rat middle cerebral artery occlusion/reperfusion (MCAO/R) models were established to explore the underlying neuroprotective mechanisms.Results: The synthesized NCM/IMP@HMSNs nanoparticles possessed uniform particle size (~143 nm) and favorable stability, with an encapsulation efficiency of 31.84%. In vitro results revealed that IMP significantly increased the viability of OGD/R-injured SH-SY5Y cells compared with the model group. In vivo experiments showed that NCM/IMP@HMSNs efficiently accumulated in ischemic brain tissue, notably decreased mNSS scores, and reduced cerebral infarct volume by approximately 33.31% compared with the MCAO/R group. This nanosystem activated the Nrf2/ARE/Keap1 pathway, thereby upregulating HO-1 expression to strengthen antioxidant capacity, alleviate the accumulation of cerebral oxidative stress products, and regulate the activities of SOD, GSH, CAT and LDH.Conclusion: The biomimetic NCM/IMP@HMSNs nanoplatform enhances the neuroprotective efficacy against ischemia–reperfusion injury via activating the Nrf2/ARE/Keap1 pathway, offering a promising targeted therapeutic approach for ischemic stroke therapy.
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DOI
PubMed
高影响因子
Food Bioscience
·
2024
·
IF 4.8
Yueyao Gui,Bing Zheng,Hairong Huang,Jianhua Xie,Yi Chen,Jialuo Shan,Xingxing Chang,Xiaobo Hu,Qiang Yu
Alcoholic liver disease (ALD) is characterized by inflammation and oxidative stress induced by excessive alcohol consumption. It is necessary to find a way to use natural active substances to alleviate the liver damage caused by alcohol. The object of this study was to investigate the beneficial effects of pure Polygomatum cyrtonema polysaccharide (PCP-80%) on ALD, and to explore its possible mechanism from the aspect of oxidative stress, inflammation and intestinal microbiota. The results demonstrated that PCP-80% effectively reduced serum biochemical index level and improved liver disease induced by acute alcohol exposure. Furthermore, PCP-80% showed promising outcomes in mitigating oxidative stress and liver inflammation associated with ALD. This might relate to the inhibition of NF-κB pathway and the activation of Keap1/HO-1 pathway. Additionally,PCP-80% enhanced the intestinal barrier and elevated the levels of propionic acid in the colon contents. It also partially reversed the alcohol-induced disturbances in the intestinal microbiome. Overall, PCP-80% exhibited significant therapeutic potential in alleviating acute alcoholic liver injury by reducing oxidative stress, inflammation, and relieving disturbances in the intestinal microbiome. These findings presented a novel approach for the treatment of acute alcoholic liver injury, offering prospects for improving disease prognosis.
研究领域:
药理学
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肝病学
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胃肠病学
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免疫学
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微生物学
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产品关联
DOI
高影响因子
JOURNAL OF FOOD BIOCHEMISTRY
·
2021
·Vol. 45
·期 4
·e13602
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IF 2.72
Yang Yue,Mengting Wang,Zhangping Feng,Yanyun Zhu,Jianchu Chen
Rice protein hydrolysates (RPH) prepared by enzymatic hydrolysis have plenty of bioactive functions. Herein, we investigated the antiaging effect of RPH on Drosophila melanogaster (fruit fly) and its mechanisms. According to the results, fruit flies reared on 0.2% and 3.2% RP-supplement diet prolonged their average lifespan, 50% survival days, and the maximum lifespan, together with increasing superoxide dismutase, manganese superoxide dismutase, and catalase activity compared to those reared on basal diet. Further studies showed the lifespan extending effect of RPH was regulated by the cooperation with the intrinsic stress protection system (Nrf2/Keap1), age-related signaling pathway (TOR, S6K) and the expression of longevity genes (methuselah). In conclusion, the lifespan extending effect of RPH makes it possible to be applied in food and healthcare industry. Practical applications In previous studies, rice protein hydrolysates (RPH) have been found to have strong antioxidant properties. But so far, most researches focused on the preparation, identification and in vitro antioxidant experiments of RPH, and there is still a lack of researches on its effect on the antioxidant system of fruit flies and the antiaging of fruit flies. This report showed that RPH enhanced the antioxidant system and prolonged the lifespan of Drosophila, which might help us rationally use rice peptides in functional foods.
研究领域:
衰老研究
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营养科学
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生物化学
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DOI
PubMed
高影响因子
FISH & SHELLFISH IMMUNOLOGY
·
2023
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IF 4.7
Shengnan Shi,Ju Wang,Changhong Liu,Lei Zheng
Quercetin is a kind of flavonoid substance extensively existing in the plant, which has antioxidant, anti-inflammatory, and anti-apoptosis effects. It was reported that the higher concentration of spores present in the environment could cause abnormal development in zebrafish larvae. Therefore, this study set out to investigate whether quercetin could reduce the zebrafish larvae damage caused by Botrytis cinerea exposure as well as to examine the molecular basis for this action. The findings demonstrated that 50 μM quercetin improved the developmental dysplasia of zebrafish larvae induced by 10 2 CFU/mL Botrytis cinerea spore suspension, reduced abnormal apoptosis, enhanced antioxidant system, relieved inflammation, reshaped intestinal morphology and recovered intestinal motility . At the molecular level, quercetin decreased the transcriptional abundance of pro-apoptotic factors ( bax , p53 , caspase3 , and caspase9 ) and up-regulated the anti-apoptotic gene ( bcl-2 ) expression to reduce apoptosis. Moreover, quercetin enhanced the activities of downstream antioxidant enzymes (SOD and CAT) to clear excess ROS and MDA due to Botrytis cinerea exposure by up-regulating the expression of antioxidant genes ( nrf2 , ho-1 , sod , and cat ) in the Keap1-Nrf2 pathway. Additionally, quercetin inhibited the elevation of TNF-α by regulating the gene expression of key targets ( jak3 , pi3k , pdk1 , akt , and ikk2 ) and the content of major proteins NF-κB (P65) and IκB in the NF-κB pathway. In conclusion, this work enriched the contents of the biological research of Botrytis cinerea and provided a new direction for the drug development and targeted therapy of quercetin.
研究领域:
药理学
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毒理学
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动物学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR HISTOLOGY
·
2023
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IF 3.2
Pan Jun,Cai Youzhi,Zhang Chi,Xu Sanzhong
Osteoarthritis (OA) remains a challenging condition due to limited drug bioavailability within the avascular and dense cartilage matrix. This study introduces a pH/redox-responsive nanogel for enhanced delivery of geraniol in OA therapy. We investigated geraniol's role in preventing chondrocyte matrix degradation and designed a pH/redox-responsive nanogel as a delivery platform. Our methods included Western blot, histological staining, and immunohistochemistry. Geraniol treatment reduced Keap1 expression while elevating Nrf2 and HO-1 levels, effectively inhibiting cartilage matrix degradation. The pH/redox-responsive nanogel further enhanced geraniol’s therapeutic impact. Our study demonstrates that geraniol encapsulated within a pH/redox-responsive nanogel mitigates OA by regulating oxidative stress and inflammation. This innovative approach holds potential as an effective OA therapeutic strategy.
研究领域:
药理学
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纳米技术
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骨科
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风湿病学
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产品关联
DOI
PubMed
高影响因子
Cell Death & Disease
·
2025
·Vol. 16
·期 1
·1-16
·
IF 9.6
Cui Zichen,Gu Guanghui,Chen Fei,Li Jianyi,Du Xiaofan,Chen Shuqing,Zhang Han,Li Chenxu,Shao Jiale,Xi Jiayi,Du Yukun,Zhao Qinghua,Xi Yongming
The accumulation of reactive oxygen species (ROS) leads to enhanced osteoclast activity, causing severe bone destruction in postmenopausal osteoporosis. Immunity-related GTPase family M member 1 (Irgm1) plays an essential role in affecting the production of intracellular ROS. To detect whether deletion of Irgm1 could suppress osteoclastogenesis through cellular redox regulation, we first evaluated whether the Irgm1 level was significantly elevated in mice bone marrow-derived monocytes/macrophages (BMDMs) from ovariectomy (OVX)-induced osteoporosis mice. Moreover, bioinformatics network analysis was performed to identify Irgm1 as a key upregulated gene during osteoclast differentiation. Next, we found that macrophage-specific Irgm1 knockout (Irgm1-cKO, Lyz2-Cre; Irgm1 flox/flox ) in OVX mice resulted in slower bone loss compared with OVX mice from the control group (Irgm1 flox/flox ). We then demonstrated that loss of Irgm1 inhibited osteoclast differentiation and bone resorption function via suppressing ROS accumulation. Further mechanism revealed that Irgm1 could endogenously bind to kelch-like ECH-associated protein 1 (Keap1) and keep Keap1 from ubiquitination and degradation. In the absence of Irgm1, Keap1 was downregulated and causing nuclear factor erythroid 2-related factor 2 (Nrf2) to translocate to the nucleus, thereby activating the level of the antioxidant system to combat oxidative stress. Moreover, Irgm1 deficiency in RAW264.7 promoted osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) through inhibiting the M1 phenotype polarization. Taken together, our results revealed that loss of Irgm1 significantly alleviates OVX-induced bone loss, thus laying the foundation for exploring Irgm1 as a novel targeting approach for the treatment of osteoporosis.
研究领域:
分子生物学
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细胞生物学
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免疫学
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遗传学
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药理学
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生物医学研究
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产品关联
DOI
PubMed
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Cheng Ning,Cailing He,Ling Yan,Changhong Liu,Aijin Ma,Lei Zheng
The research aimed to investigate the underlying anti-inflammatory and antioxidative mechanisms of walnut-derived peptides in BV-2 microglia with H 2 O 2 -induced injury, and to further assess their neuroprotective properties against cognitive impairments caused by lipopolysaccharide (LPS) in mice. The findings indicated that both walnut-derived peptides NPFD and LDAF significantly inhibited ROS production in H 2 O 2 -injured BV-2 microglia and attenuated oxidative stress in BV-2 microglial cells via the Nrf2/keap1 signaling pathway. In addition, LDAF showed greater improvement in inflammatory than NPFD in H 2 O 2 -injured BV-2 microglia. Meanwhile, The MWM demonstrated that LDAF had the potential to mitigate memory impairments caused by LPS through normalizing the brain's inflammatory responses and reducing oxidative stress. And LDAF treatment improved neuronal cell morphology in the hippocampal region of mouse brain tissue and increased the number of Nissl bodies in neurons of injured mice. These results showed that LDAF was able to improve spatial cognitive ability in mice by reducing inflammation and oxidative stress.
研究领域:
神经生物学
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分子药理学
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免疫调节
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氧化应激
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神经退行性疾病
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营养干预
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信号转导
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产品关联
DOI
高影响因子
BIOMEDICINE & PHARMACOTHERAPY
·
2018
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IF 3.457
Ji Ma,Maoru Li,Praveen Kumar Kalavagunta,Jiajing Li,Qiangqiang He,Yifan Zhang,Owais Ahmad,Hongli Yin,Tao Wang,Jing Shang
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease with a broad spectrum of liver injury. Oxidant stress is believed to be the pathogenesis of NAFLD as the “second hit”. Hydrogen peroxide is widely used as an oxidant reagent to induce the oxidant injury of cells and larval zebrafish. Recently, cichoric acid is being studied extensively for its obesity attenuating, hepatic steatosis reduction and anti-oxidant effects. In this study, to identify whether CRA could protect the H 2 O 2 induced oxidant injury via anti-oxidant impact by using L02 and HepG2 hepatocytes as in vitro and larval zebrafish as in vivo injury models, and evaluated the protective and anti-oxidant effects of CRA by pretreated it on both in vitro and in vivo models. CRA was found to reduce the production of ROS and MDA, activate the anti-oxidant enzymes SOD and GSH-px, and pathways Keap1-Nrf2 and HO-1. These results demonstrated that CRA might protect the liver injury by its anti-oxidant effect, which could be a potential therapeutic agent of NAFLD.
研究领域:
药理学
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毒理学
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细胞生物学
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斑马鱼模型
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肝脏疾病
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）