Toxicology Research
·
2024
·Vol. 13
·期 2
·
IF 2.2
Niu Junjie,Hu Jinyang,Wang Zhu
BackgroundTriple-negative breast cancer (TNBC) lacks effective therapeutic targets. Scutellaria barbata D.Don (SB) has been revealed to have anti-breast cancer (BC) effect, but the effect of SB extract in TNBC is still unclear. Herein, this research delves into the underlying mechanism.MethodsSB was extracted by solvent extraction, and the main components were identified using an Agilent 6,520 HPLC-Chip/Q-TOF (Chip/Q-TOF) MS system. In vitro cell experiments were conducted. The effects of SB extract alone, SB extract plus EGF, GSK alone, GSK plus Ezrin overexpression, or SB extract plus Ezrin overexpression on cell viability, invasion, migration, and apoptosis were examined by cell function experiments. The apoptosis- and RhoA/ROCK1 pathway-related protein levels were analyzed by western blot assay.ResultsMass spectrometry analysis exhibited that SB extract mainly contains long-chain fatty acids and ursolic acid. SB extract mitigated TNBC cell biological phenotypes, apoptosis- and RhoA/ROCK1 pathway-related marker expressions, which were reversed by EGF. The further results found that GSK obviously weakens TNBC cell biological behaviors, apoptosis- and RhoA/ROCK1 signaling-related protein levels, while oe-Ezrin treatment reverses the effect of GSK on TNBC cells. Moreover, SB extract regulated Ezrin-mediated function of TNBC cells by impeding the RhoA/ROCK1 pathway.ConclusionOur findings demonstrated that SB extract regulated Ezrin-mediated proliferation, migration, invasion, and apoptosis of TNBC cells via suppressing the RhoA /ROCK1 signaling. Our results offer the experimental foundation for further investigation of the anti-cancer role of SB in TNBC cells.HighlightsSB extract inhibits the biological phenotypes of TNBC cells.SB extract inhibits the biological behaviors of TNBC cells through the RhoA/ROCK1 pathway.SB extract modulates Ezrin-mediated TNBC cell proliferation, migration, invasion, and apoptosis via restraining the RhoA/ROCK1 signaling.
研究领域:
肿瘤学
·
药理学
·
分子生物学
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Pharmacognosy Magazine
·
2023
·
IF 0.7
Guiyuan Liu,Yinliang Bai,Guangxian Leng,Hanwei Ma,Yin Kong,Liuqing Guo,Fahong Wu,Fengxian Wei,Yi Pang,Youcheng Zhang
Background:Leakage of the alveolar epithelial barrier can lead to pulmonary oedema, leading to organ dysfunction.Objectives:Combination anthraquinone (CA) and free anthraquinone (FA) were extracted from Rhubarb, and the prevention and therapeutic effects of Rhubarb anthraquinones (RA) on lipopolysaccharide (LPS)-induced lung injury were investigated.Materials and Methods:The CA and FA were extracted from Rhubarb by water solvent extraction and ethanol solvent extraction. The extracted RA content was determined using spectrophotometry and high-performance liquid chromatography (HPLC). A mouse model of inflammatory lung injury was established by LPS induction to study the mechanism of RA activity. Inflammatory factors were measured using an enzyme-linked immunosorbent assay. Changes in alveolar epithelial leakage were assessed using a permeability assay. Changes in lung injury were evaluated by histopathological and ultrastructural observations. Tight junction (TJ) markers and Ras homolog gene family member A (RhoA)/Rho-associated protein kinase 1 (ROCK1) pathway-related proteins were measured using immunohistochemistry and Western blotting. As an agonist of RhoA/Rock signalling, U46619 was used to further verify whether RA acts through this pathway.Results:RA could inhibit pulmonary inflammation by decreasing the level of inflammatory factors. The alveolar epithelial permeability was reduced, and the pathological injury of the lung tissue was alleviated after administration with RA. Furthermore, the expression of TJ proteins was up regulated and RhoA/ROCK1 signalling was inhibited in the presence of RA. The effects of RA on TJ proteins were partially reversed by U46619.Conclusion:RA effectively protects mice against inflammatory lung injury by enhancing alveolar epithelial TJ via RhoA/ROCK1 signalling.
研究领域:
药理学
·
肺病学
·
免疫学
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-15
·
IF 14.7
Yao Mingyu,Zeng Zhenhai,Li Siheng,Zou Zhilin,Chen Zhongxing,Chen Xinyi,Gao Qingyi,Zhao Guoli,Chen Aodong,Li Zheng,Wang Yiran,Ning Rui,McAlinden Colm,Zhou Xingtao,Huang Jinhai
Glaucoma affects approximately 80 million individuals worldwide, a condition for which current treatment options are inadequate. The primary risk factor for glaucoma is elevated intraocular pressure. Intraocular pressure is determined by the balance between the secretion and outflow of aqueous humor. Here we show that using the RNA interference tool CasRx based on shH10 adenovirus-associated virus can reduce the expression of the aqueous humor circulation related genes Rock1 and Rock2 , as well as aquaporin 1 and β2 adrenergic receptor in female mice. This significantly reduced intraocular pressure in female mice and provided protection to the retina ganglion cells, ultimately delaying disease progression. In addition, we elucidated the mechanisms by which the knockdown of Rock1 and Rock2 , or aquaporin 1 and β2 adrenergic receptor in female mice, reduces the intraocular pressure and secures the retina ganglion cells by single-cell sequencing.
研究领域:
分子生物学
·
遗传学
·
眼科学
·
神经科学
✓ 已验证
DOI
PubMed
高影响因子
EXPERIMENTAL NEUROLOGY
·
2026
·
IF 4.8
Junli Xiao,Ming Wang,Haiyan Zuo,WeiChen Yan
Objective Intracerebral hemorrhage (ICH) is a fatal cerebrovascular disease. This study explored the intrinsic relationship between ICH and lncRNA CRNDE. Methods Injecting the lentiviral interference vector (sh-CRNDE) into the ICH mice (induced by collagenase). Subsequently, the neurological deficits were evaluated through Garcia scoring, the corner turn test, and the water maze test. The levels of CRNDE and inflammatory factors in the brain tissue were detected by RT-qPCR and ELISA, respectively. In vitro experiments, microglia and neuronal cells were respectively cultured with hemoglobin and Hemin. Subsequently, the level of M1 polarization markers was detected by RT-qPCR. In neuronal cells, the proliferation activity was evaluated by CCK-8. The apoptosis level was comprehensively assessed based on the results of flow cytometry and the level of LDH. Finally, the effects of inhibiting the CRNDE/miR-152-3p axis on ROCK1 and the phenotype of ICH were re-verified in animal models and cell models. Results In ICH mice, inhibition of CRNDE prevented the neurological deficits and neuroinflammation. Blocking CRNDE also significantly alleviated the M1 polarization of microglia and the apoptosis of neuronal cells. CRNDE sponges miR-152-3p through the ceRNA mechanism and regulates ROCK1. Inhibition of miR-152-3p or overexpression of ROCK1 weakens the inhibitory effect of sh-CRNDE on neurological deficits, M1 polarization, and the apoptosis of neurons. Moreover, in cell models, inhibition of ROCK1 showed the same protective effect as CRNDE downregulation. Conclusion In ICH, CRNDE upregulates ROCK1 by adsorbing miR-152-3p. This regulatory axis exacerbates neuroinflammation and neurofunctional disorders.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Translational Medicine
·
2025
·
IF 7.5
Xiaoying Ma,Weibo Shi,Zhen Wang,Shujin Li,Rufei Ma,Weihao Zhu,Lin Wu,Xiaowei Feng,Bin Cong,Yingmin Li
Background Depression is closely associated with stress-induced hippocampal damage and dysfunction. Emerging evidence demonstrates that the gut microbiota and its metabolites, acting as probiotics or prebiotics, can modulate brain structure and function via the gut-brain axis, thereby offering therapeutic potential for ameliorating related neurological and psychiatric disorders. This study delves into the contribution of the gut microbiota and its metabolites to stress-induced ferroptosis of hippocampal neurons and the associated molecular pathways. Methods This study used time-course stress paradigms combined with ferroptosis inhibitors to identify hippocampal neuronal ferroptosis. Fecal microbiota transplantation were conducted to analyze the role of gut microbiota in this process. Subsequently, 16 S rDNA sequencing and metabolomics techniques were applied to identify key gut microbiota and metabolites. Metabolites intervention were performed to examine their causal relationship with neuronal ferroptosis. Finally, we used histochemical and molecular assays to assess both intestinal and blood-brain barrier integrity as well as inflammation in peripheral blood and hippocampal tissue, along with GPR41/RhoA/Rock1 pathway changes, to preliminarily investigate the molecular mechanisms underlying stress-induced hippocampal neuronal ferroptosis. Results We demonstrated that stress triggered hippocampal neuronal ferroptosis and subsequent depressive-like behaviors in mice. Fecal microbiota transplantation successfully replicated the ferroptosis phenotype. Butyric acid and valeric acid were identified as key metabolites significantly reduced in the serum of acutely and chronically stressed mice, respectively. Intervention with these metabolites markedly alleviated ferroptosis. Furthermore, valerate intervention increased hippocampal GPR41 expression and significantly suppressed the pro-inflammatory RhoA/Rock1 pathway in chronically stressed mice, thereby reducing neuroinflammation and ameliorating neuronal ferroptosis. However, butyrate intervention showed no significant effect on the GPR41/RhoA/Rock1 pathway. Conclusion Stress induces ferroptosis in hippocampal neurons, where reduced abundance of short-chain fatty acid-producing bacteria plays a key role. Key metabolites butyric acid and valeric acid alleviate neuroinflammation to improve ferroptosis via the gut-brain axis in acute and chronic stress, respectively. Specifically, valeric acid exerts neuroprotective effect through the GPR41/RhoA/Rock1 pathway, whereas butyric acid-mediated protection likely operates through alternative mechanisms. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1186/s12967-025-06950-0.
研究领域:
神经科学
·
精神病学
·
微生物学
·
代谢组学
·
药理学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Oxidative Medicine and Cellular Longevity
·
2022
·
IF 7.31
Hongshu Wang,Xianyi Wang,Xiaomin Liu,Jinbao Zhou,Qianqian Yang,Binshu Chai,Yimin Chai,Zhongliang Ma,Shengdi Lu
Diabetes mellitus (DM) is a growing health problem. As a common complication of DM, diabetic foot ulcer (DFU) results in delayed wound healing and is a leading cause of nontraumatic amputation. miR-199a-5p, a short noncoding RNA, had abnormal expression in DFU wound tissues. The expression of miR-199a-5p was significantly increased in DFU wound tissues, skin tissues of diabetic rats, and high glucose-induced cells. Vascular endothelial growth factor A (VEGFA) and Rho-associated kinase 1 (ROCK1) are directly targets of miR-199a-5p. Inhibiting the expression of miR-199a-5p alleviated the inhibition of VEGFA and ROCK1, thereby rescued impaired proliferation and migration of HG-induced cells, and restored the normal function of the cells to some extent. In diabetic rats, inhibition of miR-199a-5p significantly increased the expression of VEGFA and ROCK1, significantly promoted wound healing, and rescued impaired wound healing. miR-199a-5p and its targets showed therapeutic effect on diabetic wounds.
研究领域:
分子生物学
·
内分泌学
·
伤口愈合
·
糖尿病研究
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF PHARMACEUTICAL SCIENCES
·
2022
·
IF 3.784
Xiaomei Wu,Zhumei Wei,Hui Feng,Hongli Chen,Jiaxiu Xie,Yupeng Huang,Mengyao Wang,Chanjuan Yao,Jianchun Huang
Betulinic acid (BA) is a natural pentacyclic triterpenoid with broad-spectrum anticancer activity, which has great development potential as an anti-cancer drug. In this study, a novel hyaluronic acid (HA)-modified BA liposome (BA-L) was developed for use in targeted liver cancer therapy. The size, polymer dispersity index (PDI), zeta potential , and entrapment efficiency were measured. Cell viability, cell migration and clonogenicity, cellular uptake, immunohistochemistry of CD44, and protein expression of ROCK1/IP3/RAS were also investigated. BA, BA-L, and HA-BA-L had no inhibitory effect on the activity of LO2 normal hepatocytes, but they inhibited the proliferation of HepG2 and SMMC-7721 cells in a dose- and time-dependent manner, with HA-BA-L exhibiting the most prominent inhibitory effect. Compared with the BA-L group, the expression of CD44 in HepG2 cells in the HA-BA-L group was decreased. The results of WB showed that BA, BA-L, and HA-BA-L downregulated the expression of ROCK1, IP3, and RAS in HepG2 cells, and the expression level in the HA-BA-L group was significantly decreased. The easily prepared HA-BA-L was demonstrated to be an excellent CD44-mediated intracellular delivery system capable of targeting effects. Further mechanistic research revealed that the inhibition of HA-BA-L on HepG2 cells may be mediated by blocking the ROCK1/IP3/RAS signaling pathways.
研究领域:
药理学
·
肿瘤学
·
生物技术
·
细胞生物学
✓ 已验证
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）