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Food & Nutrition Research · 2021 · IF 3.894

Nobiletin, a hexamethoxyflavonoid from citrus pomace, attenuates G1 cell cycle arrest and apoptosis in hypoxia-induced human trophoblast cells of JEG-3 and BeWo via regulating the p53 signaling pathway

Mengling Zhang,Jian Liu,Rui Zhang,Zengenni Liang,Shenghua Ding,Huanling Yu,Yang Shan

Background Hypoxia is associated with abnormal cell apoptosis in trophoblast cells, which causes fetal growth restriction and related placental pathologies. Few effective methods for the prevention and treatment of placenta-related diseases exist. Natural products and functional foods have always been a rich source of potential anti-apoptotic drugs. Nobiletin (NOB), a hexamethoxyflavonoid derived from the citrus pomace, shows an anti-apoptotic activity, which is a non-toxic constituent of dietary phytochemicals approved by the Food and Drug Administration. However, their effects on hypoxia-induced human trophoblast cells have not been fully studied. Objective The aim of this study was to investigate the protective effects of NOB on hypoxia-induced apoptosis of human trophoblast JEG-3 and BeWo cells, and their underlying mechanisms. Design First, the protective effect of NOB on hypoxia-induced apoptosis of JEG-3 and BeWo cells was studied. Cell viability and membrane integrity were determined by CCK-8 assay and lactate dehydrogenase activity, respectively. Real Time Quantitative PCR (RT-qPCR) and Western blot analysis were used to detect the mRNA and protein levels of HIF1α. Propidium iodide (PI)-labeled flow cytometry was used to detect cell cycle distribution. Cell apoptosis was detected by flow cytometry with Annexin V-FITC and PI double staining, and the expression of apoptosis marker protein cl-PARP was detected by Western blot analysis. Then, the molecular mechanism of NOB against apoptosis was investigated. Computer molecular docking and dynamics were used to simulate the interaction between NOB and p53 protein, and this interaction was verified in vitro by Ultraviolet and visible spectrum (UV-visible spectroscopy), fluorescence spectroscopy and circular dichroism. Furthermore, the changes in the expression of p53 signaling pathway genes and proteins were detected by RT-qPCR and Western blot analysis, respectively. Results Hypoxia treatment resulted in a decreased cell viability and cell membrane integrity in JEG-3 and BeWo cell lines, and an increased expression of HIF1α, cell cycle arrest in the G1 phase, and massive cell apoptosis, which were alleviated after NOB treatment. Molecular docking and dynamics simulations found that NOB spontaneously bonded to human p53 protein, leading to the change of protein conformation. The intermolecular interaction between NOB and human p53 protein was further confirmed by UV-visible spectroscopy, fluorescence spectroscopy and circular dichroism. After the treatment of 100 μM NOB, a down-regulation of mRNA and protein levels of p53 and p21 and an up-regulation of BCL2/BAX mRNA and protein ratio were observed in JEG-3 cells; however, there was also a down-regulation of mRNA and protein levels observed for p53 and p21 in BeWo cells after the treatment of NOB. The BCL2/BAX ratio of BeWo cells did not change after the treatment of 100 μM NOB. Conclusion NOB attenuated hypoxia-induced apoptosis in JEG-3 and BeWo cell lines and might be a potential functional ingredient to prevent pregnancy-related diseases caused by hypoxia-induced apoptosis. These findings would also suggest the exploration and utilization of citrus resources, and the development of citrus industry.

研究领域: 药理学 · 细胞生物学 · 分子生物学 · 妇产科学
✓ 已验证 DOI PubMed 高影响因子
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Heliyon · 2023 ·Vol. 9 ·期 7 ·e18046 · IF 4

Oridonin impedes breast cancer growth by blocking cells in S phase and inhibiting the PI3K/AKT/mTOR signaling pathway.

Weijie Zhang,Lei Shi,Wei Zhou,Xin Liu,Yuan Xi,Xinyin Wang,Ya Li,Xia Xu,Youcai Tang

Breast cancer is one of the most common cancers. Oridonin, a traditional Chinese medicine, is believed to inhibit tumor growth, but its particular effects on breast cancer remain unknown. In this study, we examined oridonin's effects on 4T1, MCF-7, and MDAMB-231 cellular activity using CCK8. Scratch assays were used to detect oridonin's effects on cellular migration. Oridonin's effects on the breast cancer cell cycle were studied using flow cytometry, and expression of cell cycle related proteins p53, CDK2, and p21 was detected using Western blot assays. Metabolomics assays were used to detect changes in small molecule metabolites and metabolic pathways in breast cancer cells after treatment with oridonin. Oridonin's effects on breast cancer growth were also studied using xenograft mice. Metabolomics assays were used to detect changes in metabolites and metabolic pathways in xenograft mouse plasma in a control group, model group, and drug administration group. Experimental results showed that oridonin could significantly inhibit breast cancer growth both in vivo and in vitro. Scratch experiments showed that oridonin could inhibit breast cancer cell migration. Oridonin was also able to arrest cells in S phase by affecting several cell cycle-related proteins, including p53, CDK2, and p21. Metabolomic analysis of 4T1 cells identified a total of 33 differential metabolites, including multiple amino acids (such as l-Glutamic acid, l-Asparagine, l-Histidine, l-Valine, and l-Isoleucine). KEGG pathway enrichment analysis showed significant changes in aminoacyl-tRNA biosynthesis, and in multiple amino acid metabolic pathways. Plasma metabolomic analyses of xenograft mice revealed 28 differentially-expressed metabolites between the different animal model groups, including multiple amino acids. KEGG pathway analysis showed significant alterations in multiple amino acid metabolic pathways in oridonin-treated mice. Additionally, changes in the expression of PI3K, AKT and mTOR proteins, as well as in branched amino acids, suggest that oridonin affects the PI3K/AKT/mTOR signaling pathway by inhibiting the biosynthesis of valine, leucine and isoleucine. Taken together, our results suggest that oridonin has strong anti-tumor activity in vitro and in vivo, and has potential as an adjuvant to breast cancer treatment regimens.

研究领域: 肿瘤学 · 药理学 · 分子生物学 · 代谢组学
✓ 已验证 DOI PubMed 高影响因子
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY · 2022 · IF 7.129

Involvement of the inhibition of mitochondrial apoptotic, p53, NF-κB pathways and the activation of Nrf2/HO-1 pathway in the protective effects of curcumin against copper sulfate-induced nephrotoxicity in mice

Chongshan Dai,Meng Li,Yue Liu,Diem Hong Tran,Haiyang Jiang,Shusheng Tang,Jianzhong Shen

Chronic copper exposure could cause potential nephrotoxicity and effective therapy strategies are limited. This study investigated the protective effects of curcumin on copper sulfate (CuSO 4 )-induced renal damage in a mouse model and the underlying molecular mechanisms. Mice were administrated orally with CuSO 4 (100 mg/kg per day) in combination with or without curcumin (50, 100 or 200 mg/kg per day, orally) for 28 days. Results showed that curcumin supplementation significantly reduce the Cu accumulation in the kidney tissues of mice and improved CuSO 4 -induced renal dysfunction. Furthermore, curcumin supplantation also significantly ameliorated Cu exposure-induced oxidative stress and tubular necrosis in the kidneys of mice. Moreover, compared to the CuSO 4 alone group, curcumin supplementation at 200 mg/kg per day significantly decreased CuSO 4 -induced the expression of p53, Bax, IL-1β, IL-6, and TNF-α proteins, levels of NF-κB mRNA, levels of caspases-9 and − 3 activities, and cell apoptosis, and significantly increased the levels of Nrf2 and HO-1 mRNAs in the kidney tissues. In conclusion, for the first time, our results reveal that curcumin could trigger the inhibition of oxidative stress, mitochondrial apoptotic, p53, and NF-κB pathways and the activation of Nrf2/HO-1 pathway to ameliorate Cu overload-induced nephrotoxicity in a mouse model. Our study highlights that curcumin supplementation may be a promising treatment strategy for treating copper overload-caused nephrotoxicity.

CAS / MDL: 458-37-7
✓ 已验证 产品关联 DOI PubMed 高影响因子
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JOURNAL OF COLLOID AND INTERFACE SCIENCE · 2024 · IF 9.4

Enhancing bone regeneration and immunomodulation via gelatin methacryloyl hydrogel-encapsulated exosomes from osteogenic pre-differentiated mesenchymal stem cells

Xiaorong Li,Yunhui Si,Jingxian Liang,Mengsha Li,Zhiwei Wang,Yinying Qin,Litao Sun

Mesenchymal stem cell-derived exosomes (MSC-Exos) have emerged as promising candidates for cell-free therapy in tissue regeneration. However, the native osteogenic and angiogenic capacities of MSC-Exos are often insufficient to repair critical-sized bone defects, and the underlying immune mechanisms remain elusive. Furthermore, achieving sustained delivery and stable activity of MSC-Exos at the defect site is essential for optimal therapeutic outcomes. Here, we extracted exosomes from osteogenically pre-differentiated human bone marrow mesenchymal stem cells (hBMSCs) by ultracentrifugation and encapsulated them in gelatin methacryloyl (GelMA) hydrogel to construct a composite scaffold. The resulting exosome-encapsulated hydrogel exhibited excellent mechanical properties and biocompatibility, facilitating sustained delivery of MSC-Exos. Osteogenic pre-differentiation significantly enhanced the osteogenic and angiogenic properties of MSC-Exos, promoting osteogenic differentiation of hBMSCs and angiogenesis of human umbilical vein endothelial cells (HUVECs). Furthermore, MSC-Exos induced polarization of Raw264.7 cells from a pro-inflammatory phenotype to an anti-inflammatory phenotype under simulated inflammatory conditions, thereby creating an immune microenvironment conducive to osteogenesis. RNA sequencing and bioinformatics analysis revealed that MSC-Exos activate the p53 pathway through targeted delivery of internal microRNAs and regulate macrophage polarization by reducing DNA oxidative damage. Our study highlights the potential of osteogenic exosome-encapsulated composite hydrogels for the development of cell-free scaffolds in bone tissue engineering.

研究领域: 组织工程 · 再生医学 · 生物材料 · 干细胞生物学 · 免疫学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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LIFE SCIENCES · 2025 · IF 5.1

Schwann cells secrete IGFBP5 to facilitate the growth of keloids

Kang Wei,Yiran Shi,Min Wang,Lu He,Huanhuan Xu,Haijie Wang,Langjie Chai,Ling Zhou,Yi Zou,Liang Guo

Keloids (KD) are noncancerous fibroproliferative tumors exhibiting cancer-like traits, encompass aggressive unregulated growth, absence of natural regression, and a significantly high rate of recurrence. The precise molecular mechanisms underlying KD pathology remain poorly understood. In this study, we employed single-cell sequencing to examine the characteristics of cells in KD and normal scar (NS) tissue. We evaluated Schwann cells and their secretory protein IGFBP5 function in KD. Then, the recombinant IGFBP5 protein was employed to elucidate the regulatory roles of IGFBP5 in the proliferation, migration, invasion, angiogenesis, and cell cycle of keloids fibroblasts (KF). The rabbit ear scar model was utilized to ascertain the function of IGFBP5 in vivo. We demonstrated that in KD, the proportion of Schwann cells was 4.13 times that of NS. Besides, the IGFBP5 gene exhibited an expression level that was 8.02 times higher in KD Schwann cells compared to those in NS Schwann cells. High IGFBP5 expression was positively associated with the cell proliferation, migration, invasion, angiogenesis, and cell cycle of KF. Additionally, the p53/p21/Cyclin D1 pathway regulated cell cycle and promoted cell proliferation, which was suppressed after rIGFBP5 administration. These findings suggest that Schwann cells infiltrate in KD and secrete IGFBP5 protein to promote KD growth, and targeting IGFBP5 or Schwann cell infiltration could offer novel therapeutic strategies for KD.

CAS / MDL: 25126-32-3
研究领域: 皮肤病学 · 分子生物学 · 细胞生物学 · 肿瘤生物学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Natural Product Communications · 2022 · IF 1.496

Active Compounds Screening and Hepatoprotective Mechanism of Shuganning Injection Based on Network Pharmacology and Experimental Validation

Qiyi Wang,Xiaotong Duan,Shan Li,Huaqing Lai,Weina Cheng,Jingwen Ao,Jianyong Zhang,Cancan Duan

Objective: The study aimed to analyze the core active compounds and the potential mechanism of Shuganning injection (SGNI) through network pharmacology with biological experiments. Methods: Active compounds and targets of SGNI were screened from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TCMSP) and Targetnet database, whereas the liver disease-related targets were identified through the Genecards and Online Mendelian Inheritance in Man databases. The “compound-target” and “protein-protein interaction” networks construction, core target identification, and pathway enrichment were then performed. Finally, the exploration of the mechanism of action for SGNI against acetaminophen (APAP)-induced liver injury in the HepaRG cells and validation of three identified protein targets was also carried out through western blot assay, including tumor protein p53 (p53, TP53), transcription factor Jun (Jun), and Caspase 3 (CASP3). Results: The result showed that a total of 312 active compounds of SGNI and 408 liver disease-related targets, as well as 131 core targets were revealed through databases, such as prostaglandin G/H synthase 1, prostaglandin G/H synthase 2, and nuclear factor NF-kappa B (NF-kB) p65 subunit (RELA). The core targets of SGNI were involved in regulating hepatitis B signaling pathway, NF-kB signaling pathway, Toll-like receptor signaling pathway, and tumor necrosis factor (TNF) signaling pathway. Moreover, results of molecular docking in this study indicated that chlorogenic acid, geniposide, baicalin, indirubin, and ganoderic acid A could act on RELA, JUN, TP53, TNF, CASP3, Caspase 8 (CASP8) and nuclear factor NF-kB p105 subunit (NFKB1). Similarly, results of western blot revealed that SGNI reduced the expression of p53, Jun, and Caspase 3 proteins in HepaRG cells as compared with the APAP group (P < 0.01 or P < 0.05). Conclusion: The present study verified the therapeutic effects and mechanism of SGNI on liver diseases and pointed out new directions for further research.

研究领域: 药理学 · 分子生物学 · 网络分析 · 肝病研究
✓ 已验证 DOI 高影响因子
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Scientific Reports · 2025 ·Vol. 15 ·期 1 ·1-18 · IF 3.9

The molecular subtype based on cell cycle-related gene signature predicts the prognosis and chemotherapy and immunotherapy response in gastric cancer

Su Rishun,Chen Jia,Dai Chen,Yin Songcheng,Chen Haoming,Sun Xuezeng,Fang Zhaoxin,Zhang Changhua,Chen Jingyao,Gu Liang

G2/M checkpoint and P53 pathway are essential in regulating the cell cycle and proliferation of cells, which is related to the progress of tumors. Here, we carried out an integrative analysis of the prognostic genes of these pathways in gastric cancer (GC) and thus developed a molecular subtype. We identified prognostic differential expression genes (PDEGs) of G2/M checkpoint and P53 pathways between normal and tumor tissue in TCGA-STAD and developed a molecular subtype based on PDEGs. Meanwhile, the clinical significance of the molecular subtype was further explored. In addition, a comprehensive model and nomogram based on PDEGs score were constructed and validated by GSE26901 and GSE13861. Gastric cancer cell lines and patients’ specimens were used to validate the expression of selected genes.19 PDEGs were identified from these pathways in TCGA-STAD. Ulteriorly, a PDEGs score model consisting of 4 genes (PVT1, F2R, INCENP, IRAK1) was generated to classify patients into high- and low- PDEGs score subgroups. Patients in low PDEGs score groups had a better prognosis and a higher tumor mutational burden and may be more sensitive to chemotherapy and immunotherapy. Notably, the combination of PDEGs score and clinical features showed a pleasing survival prediction ability. In the GSE13861 cohort, the PDEGs score and its derivative model were confirmed with significant predictive effects in overall survival. Furthermore, these genes were significantly upregulated in both GC cell lines and tumor tissues and F2R was the hub gene resulting in poor survival. This paper has provided a distinct insight for tumor classification predicting prognosis more accurately and having the potential to instruct the use of chemotherapy and immunotherapy for patients with GC.

CAS / MDL: 61825-94-3
研究领域: 癌症研究 · 分子生物学 · 生物信息学 · 基因组学 · 肿瘤学 · 计算生物学 · 医学遗传学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Nature Communications · 2025 ·Vol. 16 ·期 1 ·1-18 · IF 15.7

Cardiac repair using regenerating neonatal heart tissue-derived extracellular vesicles

Li Hanjing,Liu Yining,Lin Yuqing,Li Sijia,Liu Chenlu,Cai Ao,Li Wei,Zhang Wanyu,Gao Xinlu,Ren Zhongyu,Ji Haoyu,Yu Yang,Wang Xiuxiu,Ma Wenya,Wang Ning,Zhao Dan,Li Tianlong,Liu Yu,Cai Benzhi

Neonatal mammalian hearts are capable of regenerating by inducing cardiomyocyte proliferation after injury. However, this regenerative capability in adult mammalian hearts almost disappears. Extracellular vesicles (EVs) have been shown to play vital cardioprotective roles in heart repair. Here, we report that EVs from regenerating neonatal heart tissues, after apical resection surgery (AR-Neo-EVs), exhibit stronger pro-proliferative, anti-apoptotic, and pro-angiogenesis activities than EVs from neonatal mouse cardiac tissues (Neo-EVs), effects which are absent in adult mouse heart-derived EVs (Adu-EVs). Proteomic analysis reveals the expression of Wdr75 protein, a regulator of p53, is higher in AR-Neo-EVs than in Neo-EVs. It is shown the regenerative potential of AR-Neo-EVs is abrogated when Wdr75 is knocked down. We further show that delivery of AR-Neo-EVs by sodium alginate hydrogel microspheres is an effective treatment in myocardial infraction. This work shows the potential of using EVs from regenerating tissue to trigger protective and regenerative mechanisms.

CAS / MDL: 8001-22-7
研究领域: 心脏病学 · 再生医学 · 分子生物学 · 蛋白质组学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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Anti-Cancer Agents in Medicinal Chemistry · 2020 ·Vol. 20 ·期 13 ·1571-1581 · IF 2.049

The Apoptosis Mechanism of Epirubicin Combined with BCG on Human Bladder Cancer Cells

Luo Yang,Fu Xiaoyi,Han Bin,Zhang Fafu,Yuan Lihong,Men Hongsheng,Zhang Shulin,Tian Sujuan,Dong Bin,Meng Minjie

Aims: The purpose of our study was to explore the combination effect of epirubicin and Bacillus Calmette Guerin (BCG) and its mechanism. Background: Bladder cancer is a threat to human health worldwide. Commonly used chemotherapy drugs and biotherapy have significant therapeutic effects on bladder cancer, but the mechanism and combined effects are still unclear. Objective: To evaluate the anti-cancer effect of epirubicin combined with BCG on human bladder cancer cells, our studies were carried out. Methods: The viability of human bladder cancer cells with epirubicin and/or BCG treatments was examined by Cell Counting Kit-8 (CCK-8) assay. Apoptosis and cell cycle phase were determined by flow cytometry analysis. Pre-apoptosis factors of caspase-3, p53, B-cell lymphoma 2 associated X protein (Bax) and anti-apoptosis factor of B-cell lymphoma 2 (Bcl-2) were detected by western blot. Results: The viability of human bladder cancer with epirubicin or BCG treatment was decreased and the viability with epirubicin combined with BCG treatment was decreased more, which were determined by CCK-8 assay. Both epirubicin and BCG increased the apoptosis rate of human bladder cancer and arrested more cells into G0/G1 phase, which were tested by flow cytometry. The expression of caspase-3, p53 and Bax was increased and the expression of Bcl-2 was decreased with epirubicin treatment on human bladder cells, which were analyzed by western blot. The expression of caspase-3 and p53 was increased with BCG treatment, which was examined by western blot. Conclusion: Epirubicin induced apoptosis in human bladder cancer cells by up-regulating the expression of proapoptotic factors (caspase-3, p53 and Bax) and down-regulating the expression of anti-apoptotic factor (Bcl-2). BCG promoted apoptosis of human bladder cancer cells by up-regulating the expression of caspase-3 and p53. BCG plays a potential role at the time of the combination of epirubicin and BCG on bladder cancer cells in early stage. Both epirubicin and BCG affected cell cycle distribution via arresting more bladder cancer cells at G0/G1 phase, which ultimately led bladder cancer proliferation in vitro and promoted apoptosis.

研究领域: 肿瘤学 · 药理学 · 分子生物学 · 细胞生物学
✓ 已验证 DOI PubMed 高影响因子
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Materials Science & Engineering C-Materials for Biological Applications · 2019 · IF 4.959

UV-light cross-linked and pH de-cross-linked coumarin-decorated cationic copolymer grafted mesoporous silica nanoparticles for drug and gene co-delivery in vitro

Shuai Zhou,Chendi Ding,Cheng Wang,Jiajun Fu

The chemotherapy combined with gene therapy has emerged as a promising strategy for cancer therapy because of enhanced anticancer efficacy. To this end, we constructed a novel UV-light cross-linked and pH de-cross-linked coumarin-decorated cationic copolymer functionalized mesoporous silica nanoparticles (MSN) for co-delivery of chemotherapeutic agent 5-FU and tumor suppresser p53 gene. The multifunctional MSN were modified with poly(glycidyl methacrylate)-b-poly(2-(dimethylamino)ethyl methacrylate) (PGMA-b-PDMAEMA) via two sequential surface-initiated atom transfer radical polymerization (ATRP), followed by ring-opening of epoxy groups with ethanediamine and covalent conjugation with coumarin moieties via acid-liable cis-aconityl bonds. The in vitro drug release results indicated that the premature release was negligible at physiological pH when coumarin moieties on the MSN-g-PCAAMC-b-PDMAEMA surface underwent UV-light induced photo-dimerization (cross-linking), while the release of embedded drugs was accelerated under acidic conditions, which was attributed to the hydrolytic cleavage of cis-aconityl bonds (de-crosslinking). In addition to small-molecule drug, the established MSN-g-PCAAMC-b-PDMAEMA also could carry p53 gene in outer cationic copolymers, and the formed complex exhibited good gene transfection activity. Interestingly, coumarin moieties themselves could emit blue fluorescence, which was used to track the cellular uptake of the nanocarriers without the need of additional fluorescence probes. Importantly, the cytotoxicity and cell apoptosis assays confirmed that co-delivery of 5-FU and p53 gene by the cross-linked [email protected] /p53 induced enhanced chemotherapeutic efficacy as compared to 5-FU delivery alone. In conclusion, these results suggested that the constructed stimuli-responsive co-delivery system may hold the promise for cancer therapeutic application.

研究领域: 纳米技术 · 药学 · 生物医学工程 · 癌症研究 · 材料科学
✓ 已验证 产品关联 DOI PubMed 高影响因子
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JOURNAL OF BIOLOGICAL CHEMISTRY · 2021 · IF 5.157

Citrus-derived DHCP inhibits mitochondrial complex II to enhance TRAIL sensitivity via ROS-induced DR5 upregulation

Lei Chen,Miao Hao,Jingmin Yan,Lin Sun,Guihua Tai,Hairong Cheng,Yifa Zhou

Heat-modified citrus pectin, a water-soluble indigestible polysaccharide fiber derived from citrus fruits and modified by temperature treatment, has been reported to exhibit anticancer effects. However, the bioactive fractions and their mechanisms remain unclear. In this current study, we isolated an active compound, trans-4,5-dihydroxy-2-cyclopentene-l-one (DHCP), from heat-treated citrus pectin, and found that is induces cell death in colon cancer cells via induction of mitochondrial ROS. On the molecular level, DHCP triggers ROS production by inhibiting the activity of succinate ubiquinone reductase (SQR) in mitochondrial complex II. Furthermore, cytotoxicity, apoptotic activity, and activation of caspase cascades were determined in HCT116 and HT-29 cell-based systems, the results indicated that DHCP enhances the sensitivity of cancer cells to tumor necrosis factor–related apoptosis-inducing ligand (TRAIL), with DHCP-induced ROS accounting for the synergistic effect between DHCP and TRAIL. Furthermore, the combination of DHCP and TRAIL inhibits the growth of HCT116 and HT-29 xenografts synergistically. ROS significantly increases the expression of TRAIL death receptor 5 (DR5) via the p53 and C/EBP homologous protein pathways. Collectively, our findings indicate that DHCP has a favorable toxicity profile and is a new TRAIL sensitizer that shows promise in the development of pectin-based pharmaceuticals, nutraceuticals, and dietary agents aimed at combating human colon cancer.

研究领域: 肿瘤学 · 药理学 · 分子生物学 · 细胞生物学
✓ 已验证 DOI PubMed 高影响因子
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Pharmaceuticals · 2024 ·Vol. 17 ·期 11 ·1420 · IF 4.3

Virtual Screening, Molecular Dynamics, and Mechanism Study of Homeodomain-Interacting Protein Kinase 2 Inhibitor in Renal Fibroblasts

Xinlan Hu,Yan Wu,Hanyi Ouyang,Jiayan Wu,Mengmeng Yao,Zhuo Chen,Qianbin Li

Background/Objectives:Homeodomain-interacting protein kinase 2 (HIPK2) is critically involved in the progression of renal fibrosis. This study aims to identify and characterize a novel HIPK2 inhibitor, CHR-6494, and investigate its therapeutic potential.Methods:Using structure-based virtual screening and molecular dynamics simulations, we identified CHR-6494 as a potent HIPK2 inhibitor with an IC50of 0.97 μM. The effects of CHR-6494 on the phosphorylation of p53 in Normal Rattus norvegicus kidney cells (NRK-49F) induced by transforming growth factor-β (TGF-β) were assessed, along with its impact on TGF-β signaling and downstream profibrotic markers.Results:CHR-6494 significantly reduces p53 phosphorylation induced by TGF-β and enhances the interaction between HIPK2 and seven in absentia 2 (SIAH2), facilitating HIPK2 degradation via proteasomal pathways. Both CHR-6494 and Abemaciclib inhibit NRK-49F cell proliferation and migration induced by TGF-β, suppressing TGF-β/Smad3 signaling and decreasing profibrotic markers such as Fibronectin I (FN-I) Collagen I and α-smooth muscle actin (α-SMA). Additionally, these compounds inhibit nuclear factor kappa-B (NF-κB) signaling and reduce inflammatory cytokine expression.Conclusions:The study highlights the dual functionality of HIPK2 kinase inhibitors like CHR-6494 and Abemaciclib as promising therapeutic candidates for renal fibrosis and inflammation. The findings provide new insights into HIPK2 inhibition mechanisms and suggest pathways for the design of novel HIPK2 inhibitors in the future.

CAS / MDL: 1231930-82-7
研究领域: 药理学 · 分子生物学 · 肾脏生理学 · 药物发现
✓ 已验证 产品关联 DOI PubMed 高影响因子
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