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Evidence-based Complementary and Alternative Medicine · 2016 · IF 1.931

Diosgenin and 5-Methoxypsoralen Ameliorate Insulin Resistance through ER-α/PI3K/Akt-Signaling Pathways in HepG2 Cells

Ke Fang,Hui Dong,Shujun Jiang,Fen Li,Dingkun Wang,Desen Yang,Jing Gong,Wenya Huang,Fuer Lu

To determine the effects and the underlying mechanism of diosgenin (DSG) and 5-methoxypsoralen (5-MOP), two main active components in the classical Chinese prescription Hu-Lu-Ba-Wan (HLBW), on insulin resistance, HepG2 cells were incubated in medium containing insulin. Treatments with DSG, 5-MOP, and their combination were performed, respectively. The result showed that the incubation of HepG2 cells with high concentration insulin markedly decreased glucose consumption and glycogen synthesis. However, treatment with DSG, 5-MOP, or their combination significantly reversed the condition and increased the phosphorylated expression of estrogen receptor-α (ERα), sarcoma (Src), Akt/protein kinase B, glycogen synthase kinase-3β (GSK-3β), and the p85 regulatory subunit of phosphatidylinositol 3-kinase p85 (PI3Kp85). At the transcriptional level, expression of the genes mentioned above also increased except for the negative regulation of GSK-3β mRNA. The increased expression of glucose transport-4 (GLUT-4) was meanwhile observed through immunofluorescence. Nevertheless, the synergistic effect of DSG and 5-MOP on improving glycometabolism was not obvious in the present study. These results suggested that DSG and 5-MOP may improve insulin resistance through an ER-mediated PI3K/Akt activation pathway which may be a new strategy for type 2 diabetes mellitus, especially for women in an estrogen-deficient condition.

CAS / MDL: 50-28-2
研究领域: 药理学 · 内分泌学 · 细胞生物学 · 中医
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BMC Pharmacology & Toxicology · 2025 ·Vol. 26 ·期 1 ·1-12 · IF 2.7

The inhibitory effect of tyrosine kinase inhibitors on angiogenesis in zebrafish and interrelationship with the activation of the PI3K/AKT pathway

Yang Lili,Liu Xiaotian

Section Background To evaluate the effects of tyrosine kinase inhibitors (TKIs) Dovitinib, Lapatinib, and Telatinib on angiogenesis in zebrafish, and to explore the regulatory mechanism of PI3K/AKT pathway activator SC79 on these inhibitory effects. Section Methods Transgenic Fli-1:EGFP zebrafish embryos were used to observe the development and morphological changes of intersegmental vessels (ISVs) by fluorescence microscopy. Real-time fluorescence quantitative PCR was employed to detect the expression of angiogenesis-related genes including kdrl, flt1, vegfaa, akt2, and pik3r1. After determining the maximum tolerated concentration (MTC) of each compound, the effects of single-drug treatment and SC79 co-treatment on vascular development and gene expression were observed. Section Results Dovitinib (0.488 µM) and Telatinib (0.031 µM) significantly reduced the number (by 16.9% and 33.8%, respectively, P  < 0.001) and length (by 14.9% and 23.3%, respectively, P  < 0.001) of complete ISVs, while Lapatinib (1.95 µM) showed no significant inhibitory effect. Gene expression analysis revealed that Dovitinib mainly downregulated flt1 expression ( P  < 0.01), whereas Telatinib more broadly downregulated kdrl ( P  < 0.05), flt1 ( P  < 0.001), and akt2 ( P  < 0.01) expression. SC79 (2.44 nM) promoted angiogenesis, increasing ISV number ( P  < 0.01) and length ( P  < 0.05), while upregulating kdrl (2.03-fold, P  < 0.001), flt1 (1.31-fold, P  < 0.05), vegfaa (1.45-fold, P  < 0.01), akt2 (1.64-fold, P  < 0.01), and pik3r1 (1.48-fold, P  < 0.05) expression. Co-treatment experiments showed that all three TKIs could counteract SC79’s pro-angiogenic effects to varying degrees, with Telatinib showing the strongest effect. Under SC79 co-treatment conditions, all TKIs significantly downregulated kdrl expression ( P  < 0.001), but had differential effects on other genes: Dovitinib mainly downregulated flt1 ( P  < 0.05), Lapatinib specifically downregulated vegfaa ( P  < 0.01), akt2 ( P  < 0.05), and pik3r1 ( P  < 0.05), while Telatinib simultaneously downregulated flt1 ( P  < 0.01), akt2 ( P  < 0.05), and pik3r1 ( P  < 0.01). Section Conclusions Dovitinib and Telatinib exhibit significant anti-angiogenic effects, while Lapatinib is less effective. Different TKIs inhibit angiogenesis by regulating different signaling molecules: Dovitinib primarily targets VEGF receptors, Telatinib targets both receptors and the downstream PI3K/AKT pathway, and Lapatinib shows inhibitory effects on VEGF ligand expression in the SC79 background. SC79 promotes angiogenesis by activating the PI3K/AKT pathway and partially reverses the inhibitory effects of TKIs. These findings provide new insights for targeted therapy of abnormal angiogenesis in ophthalmic diseases, suggesting that precise regulation of angiogenesis may be achieved by modulating the balance between TKIs and the PI3K/AKT signaling pathway.

CAS / MDL: 67-68-5
研究领域: 发育生物学 · 药理学 · 分子生物学 · 眼科学 · 信号转导
✓ 已验证 产品关联 DOI PubMed 高影响因子
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JOURNAL OF BIOMEDICAL SCIENCE · 2023 ·Vol. 30 ·期 1 ·1-19 · IF 11

Tumor-secreted IFI35 promotes proliferation and cytotoxic activity of CD8+ T cells through PI3K/AKT/mTOR signaling pathway in colorectal cancer

Li Peisi,Zhou Dawang,Chen Dongwen,Cheng Yikan,Chen Yuan,Lin Zhensen,Zhang Xi,Huang Zhihong,Cai Jiawei,Huang Wenfeng,Lin Yanyun,Ke Haoxian,Long Jiahui,Zou Yifeng,Ye Shubiao,Lan Ping

Background A large proportion of the patients with cancer do not respond to immunotherapies. Recent studies suggested an important role for tumor-infiltrating cytotoxic T lymphocytes (CTL) in enhancing response to immunotherapy. Here, we aim to identify gene that induce proliferative and cytotoxic states of CD8 + T cells, and to investigate its effect on CAR-T cells against colorectal cancer. Methods Correlation between the expression of IFI35 with the activation and cytotoxicity of CD8 + T cells was assessed with TCGA and proteomic databases. Then we constructed murine colon cancer cells over-expressing IFI35 and tested their effect on anti-tumor immunity in both immunodeficient and immunocompetent mouse models. Flow cytometry and immunohistochemistry were performed to assess the immune microenvironment. Western blot analysis was used to identify the potential down-stream signaling pathway regulated by IFI35. We further investigated the efficacy of the rhIFI35 protein in combination with immunotherapeutic treatment. Results The transcriptional and proteomic analysis of the activation and cytotoxicity of CD8 + T cells in human cancer samples demonstrated that IFI35 expression is correlated with increased CD8 + T cell infiltration and predicted a better outcome in colorectal cancer. The number and cytotoxicity of CD8 + T cells were significantly increased in IFI35-overexpressing tumors. Mechanistically, we identified that the IFNγ-STAT1-IRF7 axis stimulated IFI35 expression, and that IFI35-mediated regulation of CD8 + T cell proliferation and cytotoxicity was dependent on PI3K/AKT/mTOR signaling pathway in vitro. Furthermore, IFI35 protein enhanced the efficacy of CAR-T cells against colorectal cancer cells. Conclusion Our findings identify IFI35 as a new biomarker that can enhance the proliferation and function of CD8 + T cells, as well as increase the efficacy of CAR-T cells against colorectal cancer cells. Graphical Abstract

CAS / MDL: 76-03-9
研究领域: 肿瘤学 · 免疫学 · 分子生物学 · 癌症免疫疗法
✓ 已验证 产品关联 DOI PubMed 高影响因子
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JOURNAL OF ETHNOPHARMACOLOGY · 2021 · IF 4.36

Zuojin Pill ameliorates chronic atrophic gastritis induced by MNNG through TGF-β1/PI3K/Akt axis

Yuling Tong,Ruilin Wang,Xia Liu,Miao Tian,Yanling Wang,Yanfei Cui,Wenjun Zou,Yanling Zhao

Ethnopharmacological relevance Zuojin Pill (ZJP) is a classic prescription composed of Coptis chinensis and Tetradium ruticarpum (A.Juss.) T.G.Hartley, which is often used in the treatment of digestive system diseases . Aim of this study The purpose of this study was to explore the therapeutic effect and potential mechanism of ZJP on chronic atrophic gastritis (CAG) induced by MNNG . Materials and methods The GES-1 and rat model of CAG was established by MNNG. Detection of cell viability, morphological changes and proliferation of GES-1 by CCK-8 and high content screening (HCS) assay. G-17, IL-8 and TNF-α in rat serum were detected by ELISA kit. The expression of related mRNA and protein on TGF-β1/PI3K/Akt signal axis were detected by RT-PCR and Western blot . Results The results showed that ZJP could significantly improve the GES-1 damage induced by MNNG and improve the gastric histomorphology of CAG rats. The intervention of ZJP could significantly reduce the content of G-17 and inflammatory factors IL-8, TNF- α, IL-6 and IL-1β, inhibit the expression of TGF-β1, PI3K and their downstream signals p-Akt, p-mTOR, P70S6K, and promote the expression level of PTEN, LC3-II and Beclin-1. Conclusion ZJP has a good therapeutic effect on CAG induced by MNNG, which may be closely related to the inhibition of TGF-β1/PI3K/Akt signal pathway.

CAS / MDL: 70-25-7
研究领域: 药理学 · 民族药理学 · 胃肠病学 · 分子生物学 · 细胞生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Oxidative Medicine and Cellular Longevity · 2021 · IF 6.543

PIN1 Protects Hair Cells and Auditory HEI-OC1 Cells against Senescence by Inhibiting the PI3K/Akt/mTOR Pathway

Yanzhuo Zhang,Zhe Lv,Yudong Liu,Huan Cao,Jianwang Yang,Baoshan Wang

A growing amount of evidence has confirmed the crucial role of the prolyl isomerase PIN1 in aging and age-related diseases. However, the mechanism of PIN1 in age-related hearing loss (ARHL) remains unclear. Pathologically, ARHL is primarily due to the loss and dysfunction of hair cells (HCs) and spiral ganglion cells (SGCs) in the cochlea. Therefore, in this study, we aimed to investigate the role of PIN1 in protecting hair cells and auditory HEI-OC1 cells from senescence. Enzyme-linked immunosorbent assays, immunohistochemistry, and immunofluorescence were used to detect the PIN1 protein level in the serum of ARHL patients and C57BL/6 mice in different groups, and in the SGCs and HCs of young and aged C57BL/6 mice. In addition, a model of HEI-OC1 cell senescence induced by H2O2 was used. Adult C57BL/6 mice were treated with juglone, or juglone and NAC, for 4 weeks. Interestingly, we found that the PIN1 protein expression decreased in the serum of patients with ARHL, in senescent HEI-OC1 cells, and in the cochlea of aged mice. Moreover, under H2O2 and juglone treatment, a large amount of ROS was produced, and phosphorylation of p53 was induced. Importantly, PIN1 expression was significantly increased by treatment with the p53 inhibitor pifithrin-α. Overexpression of PIN1 reversed the increased level of p-p53 and rescued HEI-OC1 cells from senescence. Furthermore, PIN1 mediated cellular senescence by the PI3K/Akt/mTOR signaling pathway. In vivo data from C57BL/6 mice showed that treatment with juglone led to hearing loss. Taken together, these findings demonstrated that PIN1 may act as a vital modulator in hair cell and HEI-OC1 cell senescence.

CAS / MDL: 616-91-1
研究领域: 衰老 · 听力科学 · 细胞生物学 · 分子生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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NEUROSCIENCE · 2024 · IF 2.9

HACE1 exerts a neuroprotective role against oxidative stress in cerebral ischemia–reperfusion injury by activating the PI3K/AKT/Nrf2 pathway

Xinyue Zhang,Xiao Wang,Le Yin,Dan Wang,Hong Jiao,Xiaodan Liu,Jiaolin Zheng

HECT domain and Ankyrin repeat-containing E3 ubiquitin protein ligase 1 (HACE1) is an E3 ubiquitin ligase involving oxidative stress, an important contributor in cerebral ischemia–reperfusion injury (CIRI). It was proposed to be associated with the PI3K/AKT pathway and Nrf2 nuclear translocation, which are important players of oxidative stress. Therefore, we supposed that HACE1 might affect CIRI by regulating the PI3K/AKT/Nrf2 pathway. Here, we used the transient middle cerebral artery occlusion-reperfusion (tMCAO/R) model to induce CIRI in rats and found lower HACE1 expression in ischemic rats compared with the control. To explore the exact role of HACE1, the lentivirus vector carrying the HACE1 sequence was administrated to rats by intracerebroventricular injection (1 × 10 9  TU/mL, 9 μL) one week before tMCAO/R operation. HACE1 overexpression alleviated tMCAO/R-induced brain damage in rats. Further studies revealed that it reduced oxidative stress via activating the PI3K/AKT/Nrf2 pathway, thereby inhibiting neuronal apoptosis in the ischemic penumbra of rats with CIRI. Then, differentiated PC12 cells were cultured in oxygen-glucose deprivation-reoxygenation (OGD/R) conditions (OGD: 1 % O 2 , 94 % N2, and 5 % CO 2 ; R: normal atmosphere) to simulate CIRI in vitro . Similarly, HACE1 overexpression inhibited neuronal apoptosis caused by OGD/R treatment. The PI3K inhibitor LY294002 reversed the inhibitory effects of HACE1 overexpression on oxidative stress in OGD/R-injured cells, accompanied by the inactivated AKT/Nrf2 pathway. Altogether, our results suggest that HACE1 protects against oxidative stress-induced neuronal apoptosis in CIRI by activating the PI3K/AKT/Nrf2 pathway, providing a new insight into the CIRI treatment.

CAS / MDL: 47165-04-8
研究领域: 神经科学 · 分子生物学 · 细胞生物学 · 药理学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES · 2024 ·Vol. 25 ·期 23 ·12844 · IF 4.9

Hydroxytyrosol Alleviates Acute Liver Injury by Inhibiting the TNF-α/PI3K/AKT Signaling Pathway via Targeting TNF-α Signaling

Zhining Gao,Haoyang Dai,Qinqin Zhang,Fan Yang,Chenxi Bu,Suiqing Chen

Acute liver injury (ALI) is an injury to liver tissue caused by viruses, drugs, alcohol, and oxygen deprivation, and is one of the most common and serious clinical disorders. Hydroxytyrosol (HT) is a naturally occurring polyphenolic compound isolated from forsythia and has excellent anti-inflammatory properties. However, the effect and mechanisms of HT in ALI remain unclear. We used the LPS/D-GalN induced experimental ALI mouse model and AML12 cells to reveal the efficacy and potential mechanisms of HT in ALI, and HE staining was used for the evaluation of pathologies. A biochemical assay was used to detect changes in liver function, RNA-seq was conducted to reveal the underlying mechanisms of HT for ALI, and WB, RT-qPCR, and IF were used to assess the effects of HT action. Furthermore, an in vitro ALI model against HT in AML12 cells induced by LPS/D-GalN was used to assess the HT protection mechanism. HT significant alleviated LPS/D-GalN-induced ALI in the mice by suppressing inflammatory. In terms of RNA-seq, HT improved the TNF, ECM-receptor interaction, and PI3K/AKT signaling pathway, and it downregulated the mRNA levels of VCAM-1, CXCL5, TNF-α and IL-6 in the liver. Mechanically, HT alleviated LPS/D-GalN in the mice by targeting TNF-α, thereby inhibiting the TNF-α/PI3K/AKT signaling pathway.

CAS / MDL: 1772-03-8
研究领域: 药理学 · 肝病学 · 分子生物学 · 免疫学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS · 2021 · IF 3.575

Pirfenidone inhibits fibroblast proliferation, migration or adhesion and reduces epidural fibrosis in rats via the PI3K/AKT signaling pathway

Xiaobo Zhang,Jie Zhang,Yun Liu,Dongming Zhu,Dong Chen,Zhen Zhang,Yu Sun

Objective This present study aims to assess the effect of pirfenidone (PFD) on inhibiting fibroblast proliferation, migration or adhesion in vitro and reducing laminectomy-induced epidural fibrosis in vivo. Methods The effect of PFD on proliferation inhibition was evaluated with flow cytometry, CCK-8, EdU and western-blotting assays. Altered properties in migration and adhesion were confirmed by wound-scratch, transwell, immunofluorescence (IF), cell adhesion and western-blotting assays. Additionally, fifty male healthy Sprague-Dawley rats were subjected to laminectomy and then treated with various concentrations of PFD. After 4 weeks, the degree of epidural fibrosis was evaluated by histological analysis. Results In vitro, the results of flow cytometry, CCK-8, EdU and western-blotting assays showed that PFD reduced fibroblast proliferation by a dose-dependent manner. And the results of wound-scratch, transwell, IF, cell adhesion and western-blotting assays showed that the migration and adhesion of fibroblasts could be inhibited and the cytoskeleton could also be altered in a dose-dependent manner. And the inhibitory effect of PFD could be partially reversed in the PI3K overexpression experiment, which indicated that the capability of PFD to inhibit fibroblast proliferation, migration and adhesion might be through the PI3K/AKT signaling pathway . In vivo, an obvious reduction in epidural fibrosis was observed in groups topically treated with PFD. Conclusions Topical PFD application obviously suppressed laminectomy-induced epidural fibrosis, possibly by inhibiting fibroblast proliferation, migration and adhesion via the PI3K/AKT signaling pathway. PFD may be a safe and effective pharmaceutical to reduce clinical epidural fibrosis.

研究领域: 药理学 · 神经外科 · 细胞生物学
✓ 已验证 DOI PubMed 高影响因子
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OncoTargets and Therapy · 2022 · IF 4.345

Evodiamine activates cellular apoptosis through suppressing PI3K/AKT and activating MAPK in glioma

Rong Wang,Danni Deng,Naiyuan Shao,Yuan Xu,Lian Xue,Ya Peng,Yatian Liu,Feng Zhi

Background Glioblastoma multiforme (GBM) is the most malignant primary tumor of the central nervous system and is associated with a very poor prognosis. No further improvements in outcomes have been reported since radiotherapy-temozolomide therapy was introduced. Therefore, developing new agents to treat GBM is important.Aim This study aimed to evaluate the anti-tumor effect of evodiamine (Evo) on GBM cells, and to determine the underlying mechanisms involved.Results According to MTT assay results, Evo significantly inhibited the cell proliferation in a time- and dose-dependent manner. Fluorescence microscopy and flow cytometry analyses revealed that Evo induced cell apoptosis in a concentration-dependent manner. Moreover, Evo induced reactive oxygen species (ROS) production and mitochondrial membrane potential (MMP) disruption. Finally, Evo induced apoptosis in cancer cells by suppressing PI3K/AKT signaling and inducing MAPK phosphorylation (p38 and JNK, but not ERK) to regulate apoptotic proteins (Bax, Bcl-2, Cytochrome c, Caspase-3, and PARP).Conclusion In summary, Evo inhibits cell proliferation by inducing cellular apoptosis via suppressing PI3K/AKT and activating MAPK in GBM; these results indicate that Evo may be regarded as a new approach for GBM treatment.

研究领域: 肿瘤学 · 药理学 · 细胞生物学
✓ 已验证 DOI PubMed 高影响因子
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BMC Complementary Medicine and Therapies · 2022 ·Vol. 22 ·期 1 ·1-10 · IF 2.838

Diosmin mitigates high glucose-induced endoplasmic reticulum stress through PI3K/AKT pathway in HK-2 cells

Deng Jiuhong,Zheng Chao,Hua Zhou,Ci Haideng,Wang Guiying,Chen Lijing

Background Diosmin has been reported to treat diabetes, but its role in diabetic nephropathy (DN) remains unclear. This research investigated the mechanism by which diosmin alleviated high glucose (HG)-induced HK-2 cell injury.Methods First, we used CCK-8 to detect the effect of 0.1, 1, or 10 μg/mL diosmin on the viability of HK-2 cells treated with normal glucose or HG. Next, we used flow cytometry, automatic biochemical analyzer, ELISA, immunofluorescence, and colorimetric assay kit to examine the apoptosis, oxidative stress, inflammatory factors, and Caspase-3 expression in HK-2 cells. Thereafter, we used the western blot and qRT-PCR to examine the expression of the endoplasmic reticulum stress-, oxidative stress-, inflammation-, apoptosis-, and autophagy, and PI3K/AKT pathway-related factors.Results Diosmin was non-cytotoxic to normal HK-2 cells and enhanced the HK-2 cell viability suppressed by HG. Meanwhile, diosmin restrained apoptosis, the contents of MDA, pro-inflammatory factors, and Caspase-3 but intensified the contents of SOD and CAT induced by HG. We further confirmed that diosmin blunted oxidative stress-, inflammation-, apoptosis-, and autophagy-related factors expression induced by HG via restraining the CHOP and GRP78 expressions. Further, we also discovered that PTEN level was restrained and the ratios of p-PI3K/PI3K and p-AKT/AKT were enhanced in HK-2 cells induced by HG, which was reversed by co-treatment of HG and diosmin.Conclusion sOur study manifested that diosmin alleviated the HG-mediated endoplasmic reticulum stress injury in HK-2 cells via restraining the PI3K/AKT pathway.

CAS / MDL: 9048-46-8 9002-93-1
研究领域: 药理学 · 细胞生物学 · 糖尿病 · 肾病学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Discover Oncology · 2024 ·Vol. 15 ·期 1 ·1-12 · IF 2.8

Anlotinib inhibits growth of human esophageal cancer TE-1 cells by negative regulating PI3K/Akt signaling pathway

Liu Yueli,Li Fan,Wang Qiongyu,Zhang Yunfei,Tian Shuhong,Li Biao

Anlotinib is effective in treatment of many kinds of malignant cancer, but its antineoplastic effects on esophageal cancer remains unclear. This study aims to investigate its impact on esophageal cancer and the underlying mechanisms. Anlotiniband 5-fluorouracil + cisplatin (5-FU + DDP) was administered separately to human esophageal cancer TE- 1 cells tumor xenograft mouse models every 3 days. Tumor size and body weight were measured before each treatment and at the end of the experiment. In vitro studies were conducted using TE- 1 cells to examine the effects of Anlotinib. Cell viability, migration, proliferation, apoptosis, cell cycle, their regulatory proteins and the transcriptomic changes were analyzed. Anlotinib reduced tumor size, tumor weight, and the ratio of tumor weight to body weight in vivo. It decreased the viability of TE- 1 cells, with a 50% growth-inhibitory concentration of 9.454 μM for 24 h, induced apoptosis, and arrested TE- 1 cell cycle in the S phase. It inhibited migration and proliferation while negatively regulating the PI3K/Akt signaling pathway. Enhanced expressions of P21, Bax, and lowered expressions of cyclin A1, cyclin B1, CDK1, PI3K, Akt, p-Akt, and Bcl-2 were observed after Anlotinib treatment. Anlotinib exhibits antineoplastic activity against human esophageal cancer TE- 1 cells by negatively regulating the PI3K/Akt signaling pathway, consequently altering the expressions of proteins related to proliferation, apoptosis, and the cell cycle.

CAS / MDL: 298-93-1
研究领域: 肿瘤学 · 药理学 · 细胞生物学 · 分子生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Frontiers in Pharmacology · 2024 · IF 4.4

Neuroprotective effects of total phenolics from Hemerocallis citrina Baroni leaves through the PI3K/AKT pathway

Jia Yanjun,Wang Yanping,Wang Zixia,Zhang Zeyu,Zhang Ju,Zhang Jingjing,Sun Ke,Hua Yongchen,Chai Guolin,Hu Fangdi

Neurological injury, as a major pathogenic mechanism in depression, holds significant importance in the research and development of antidepressant drugs. Hemerocallis citrina Baroni (H. citrina), referred to as “Forgetting Sadness Grass,” has been confirmed to possess remarkable neuroprotective effects. Studies have identified that the total phenolics in H. citrina Baroni leaves (HLTP) consist of flavonoids and phenolic acids and numerous studies have substantiated the neuroprotective effects of them. Based on this, we propose that HLTP may possess neuroprotective properties. To confirm this hypothesis, we initially employed network pharmacology techniques to predict potential targets for the neuroprotective effects of HLTP based on the Swiss Target Prediction database. GO and KEGG analyses were conducted to predict potential pathways, and a component-target-pathway network was constructed. Molecular docking experiments were then performed to analyze the binding abilities of the selected active components with the main targets. Furthermore, we validated the neuroprotective effects of HLTP and key targets selected through network pharmacology using a corticosterone-induced PC12 neuronal cell damage model. Network pharmacology research has identified that in the HLTP, Quercetin, Rutin, Apigenin, and Isoquercitrin are potential active components that may exert neuroprotective effects by modulating key targets such as AKT1, TNF, TP53, and CASP3 through crucial pathways including PI3K/AKT and apoptosis. Molecular docking revealed that 4-O-Caffeoylquinic acid, 5-O-Caffeoylshikimic acid, 4-p-Coumaroylquinic acid, and 5-O-Feruloylquinic acid exhibit low binding energies with key targets. Particularly, 4-O-Caffeoylquinic acid forms stable binding through hydrogen bonding with residues such as LYS389, GLU49, GLN47, LYS30, ASP44, and GLU40 in AKT1. PC12 cells were stimulated with 200 μmol/L Corticosterone (Cort) for 24 h, and then treated with 50, 100 and 200 μg/mL of HLTP for 24 h. The cell viability of damaged cells were significantly increased in a dose-dependent manner by 9.50%, 10.42% and 21.25%, respectively (P < 0.01). Western blot analysis confirmed that HLTP significantly (P < 0.01) increased the protein expression of PI3K and AKT by 15.24%, 30.44%, 41.03%, and 21.78%, 43.63%, 12.86%, respectively. In addition, through biochemical method, flow cytometry and WB analysis, we found that different concentrations of HLTP can all improve cell damage by reducing ROS, MDA, Ca2+, Cyt-C, Caspase-3, TNF-α and IL-1β, and increasing SOD, CAT, MMP, Bcl-2/Bax and IL-10. In particular, the HLTP at 200 μg/mL, compared with the Model group, decreased by 140.2%, 54.66%, 51.34%, 65.26%, 40.32%, 63.87%, and 55.38%, and increased by 39.65%, 35.45%, 38.38%, 28.54%, and 39.98%, respectively. Through the above experiments, we verified that HLTP may exert neuroprotective effects by mediating the PI3K/AKT signaling pathway to counteract oxidative stress damage, improve mitochondrial dysfunction, and alleviate inflammatory injury.

CAS / MDL: 50-22-6 298-93-1
研究领域: 药理学 · 神经科学 · 分子生物学 · 细胞生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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