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1.
Int Immunopharmacol ; 130: 111798, 2024 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-38442583

RESUMO

Asthma is a serious global health problem affecting 300 million persons around the world. Mast cells (MCs) play a major role in airway hyperresponsiveness (AHR) and inflammation in asthma, their exact effector mechanisms remain unclear. Here, we aim to investigate the inhibitory effect of Bergapten (BER) on MRGPRX2-mediated MCs activation through asthma model. Mouse model of asthma was established to examine the anti-asthmatic effects of BER. Calcium (Ca2+) influx, ß-hexosaminidase and histamine release were used to assess MCs degranulation in vitro. RNA-Seq technique was conducted to study the gene expression profile. RT-PCR and Western Blotting were performed to examine targeting molecules expression. BER inhibited AHR, inflammation, mucous secretion, collagen deposition and lung MCs activation in asthma model. BER dramatically reduced levels of IL4, IL-5, and IL-13 in bronchoalveolar lavage fluid (BALF), as well as inflammatory cells. BER also reduced serum IgE levels. Pretreatment MCs with BER inhibited substance P (SP)-induced Ca2+ influx, degranulation and cytokines release from MCs. BER also reduced the phosphorylation levels of PKC, PLC, IP3R, AKT and ERK, which were induced by SP. Furthermore, RNA-seq analysis showed that SP up-regulated 68 genes in MCs, while were reversed by BER. Among these 68 genes, SP up-regulated NR4A1 expression, and this effect was inhibited by BER. Meanwhile, knockdown of NR4A1 significantly attenuated SP-induced MCs degranulation. In conclusion, NR4A1 plays a major role in MRGPRX2-mediated MCs activation, BER inhibited AHR and inflammation in asthmatic model by inhibiting MCs activation through MRGPRX2-NR4A1 pathway.


Assuntos
5-Metoxipsoraleno , Anti-Inflamatórios , Asma , Mastócitos , Animais , Camundongos , 5-Metoxipsoraleno/farmacologia , 5-Metoxipsoraleno/uso terapêutico , Asma/tratamento farmacológico , Degranulação Celular , Inflamação/tratamento farmacológico , Pulmão/metabolismo , Mastócitos/efeitos dos fármacos , Receptores Acoplados a Proteínas G/metabolismo , Substância P/metabolismo , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/uso terapêutico , Camundongos Endogâmicos C57BL , Feminino
2.
Int J Mol Sci ; 24(21)2023 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-37958539

RESUMO

There is some evidence that non-photoactivated psoralens may be active against breast and colon tumor cells. Therefore, we evaluated the antiproliferative, proapoptotic, and anti-migrative effect of 5-methoxypsoralen (5-MOP) isolated from Peucedanum tauricum MB fruits in human colorectal adenocarcinoma (HT-29 and SW620), osteosarcoma (Saos-2 and HOS), and multiple myeloma (RPMI8226 and U266). Dose- and cell-line-dependent effects of 5-MOP on viability and proliferation were observed, with the strongest inhibitory effect against Saos-2 and a moderate effect against the HOS, HT-29, and SW620 cells. Multiple myeloma showed low sensitivity. The high viability of human normal cell cultures (HSF and hFOB) in a wide range of 5-MOP concentrations tested (6.25-100 µM) was confirmed. Moreover, the migration of treated Saos-2, SW620, and HT-29 cell lines was impaired, as indicated via a wound healing assay. Flow cytometry analysis conducted on Saos-2 cells revealed the ability of 5-MOP to block the cell cycle in the G2 phase and trigger apoptosis, which was accompanied by a loss of mitochondrial membrane potential, caspases (-9 and -3) activation, the altered expression of the Bax and Bcl-2 proteins, and decreased AKT phosphorylation. This is the first report evaluating the antiproliferative and antimigratory impact of non-UV-activated bergapten on the abovementioned (except for HT-29) tumor cells, which provides new data on the potential role of 5-MOP in inhibiting the growth of various types of therapeutic-resistant cancers.


Assuntos
Neoplasias Ósseas , Mieloma Múltiplo , Humanos , 5-Metoxipsoraleno/farmacologia , Proliferação de Células , Apoptose , Neoplasias Ósseas/patologia , Linhagem Celular Tumoral
3.
Acta Pharmacol Sin ; 44(9): 1867-1878, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37142684

RESUMO

Inhibition of NLRP3 inflammasome activation produces potent therapeutic effects in a wide array of inflammatory diseases. Bergapten (BeG), a furocoumarin phytohormone present in many herbal medicines and fruits, exibits anti-inflammatory activity. In this study we characterized the therapeutic potential of BeG against bacterial infection and inflammation-related disorders, and elucidated the underlying mechanisms. We showed that pre-treatment with BeG (20 µM) effectively inhibited NLRP3 inflammasome activation in both lipopolysaccharides (LPS)-primed J774A.1 cells and bone marrow-derived macrophages (BMDMs), evidenced by attenuated cleaved caspase-1 and mature IL-1ß release, as well as reduced ASC speck formation and subsequent gasdermin D (GSDMD)-mediated pyroptosis. Transcriptome analysis revealed that BeG regulated the expression of genes involved in mitochondrial and reactive oxygen species (ROS) metabolism in BMDMs. Moreover, BeG treatment reversed the diminished mitochondrial activity and ROS production after NLRP3 activation, and elevated the expression of LC3-II and enhanced the co-localization of LC3 with mitochondria. Treatment with 3-methyladenine (3-MA, 5 mM) reversed the inhibitory effects of BeG on IL-1ß, cleaved caspase-1 and LDH release, GSDMD-N formation as well as ROS production. In mouse model of Escherichia coli-induced sepsis and mouse model of Citrobacter rodentium-induced intestinal inflammation, pre-treatment with BeG (50 mg/kg) significantly ameliorated tissue inflammation and injury. In conclusion, BeG inhibits NLRP3 inflammasome activation and pyroptosis by promoting mitophagy and maintaining mitochondrial homeostasis. These results suggest BeG as a promising drug candidate for the treatment of bacterial infection and inflammation-related disorders.


Assuntos
Inflamassomos , Proteína 3 que Contém Domínio de Pirina da Família NLR , Camundongos , Animais , Inflamassomos/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Piroptose , Espécies Reativas de Oxigênio/metabolismo , 5-Metoxipsoraleno/farmacologia , Mitofagia , Inflamação/tratamento farmacológico , Inflamação/metabolismo , Caspase 1/metabolismo , Interleucina-1beta/metabolismo
4.
Exp Neurol ; 365: 114426, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37088250

RESUMO

Major depressive disorder (MDD) is a common psychiatric disorder that severely affects human life and health. However, the pathological mechanism of MDD is unclear, and effective treatment strategies are urgently needed. Microglia-mediated neuroinflammation is closely associated with the pathophysiology of depression. Bergapten (BG) is a natural pharmaceutical monomer with anti-inflammatory effects; however, its role in neuroinflammation and depression remains unclear. In this study, we employed a lipopolysaccharide (LPS) injection-induced acute depression mouse model, and found that treatment with BG significantly alleviated LPS-induced depression-like behavior in mice. BG administration largely decreased the increase in microglial numbers and rescued the microglial morphological changes induced by LPS injection. Furthermore, transcriptomic changes revealed a protective role of BG in the hippocampus of mice. Mechanistically, we found that BG directly inhibited cyclooxygenase 2 (COX2) activity, and suppressed nuclear factor-κB (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways in microglia. Together, these results highlight the important role of BG in microglial activation, neuroinflammation, and depression-like behavior, thus providing a new candidate drug for depression treatment.


Assuntos
Transtorno Depressivo Maior , NF-kappa B , Animais , Humanos , Camundongos , 5-Metoxipsoraleno/farmacologia , Ciclo-Oxigenase 2/metabolismo , Depressão/tratamento farmacológico , Depressão/induzido quimicamente , Transtorno Depressivo Maior/metabolismo , Lipopolissacarídeos/toxicidade , Microglia/metabolismo , Proteínas Quinases Ativadas por Mitógeno/metabolismo , Doenças Neuroinflamatórias , Transdução de Sinais
5.
J Biomol Struct Dyn ; 41(5): 1776-1789, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-34996337

RESUMO

The AcrAB-TolC efflux pump (EP) confers multidrug resistance to Salmonella enterica, a major etiological agent of foodborne infections. Phytochemicals that inhibit the functions of AcrAB-TolC EP present ideal candidates for reversal of antibiotic resistance. Progressive technological advancements, have facilitated the development of computational methods that offer a rapid low-cost approach to screen and identify phytochemicals with inhibitory potential against EP. In this study, 71 phytochemicals derived from plants used for medicinal purposes in Mexico were screened for their potential as inhibitors of Salmonella AcrB protein using in silico approaches including molecular docking and molecular dynamics (MD) simulation. Consequently, naringenin, 5-methoxypsoralen, and licarin A were identified as candidate inhibitors of AcrB protein. The three phytochemicals bound distal/deep pocket (DP) and hydrophobic trap (HPT) residues of AcrB protein critical for interactions with inhibitors, with estimated binding free energies of -95.5 kJ/mol, -97.4 kJ/mol, and -143.8 kJ/mol for naringenin, 5-methoxypsoralen, and licarin A, respectively. Data from the 50 ns MD simulation study revealed stability of the protein-ligand complex and alterations in the AcrB protein DP conformation upon binding of phytochemicals to the DP and HPT regions. Based on the estimated binding free energy and interactions with three out of five residues lining the hydrophobic trap, licarin A demonstrated the highest inhibitory potential, supporting its further application as a candidate for overcoming drug resistance in pathogens. Communicated by Ramaswamy H. Sarma.


Assuntos
Antibacterianos , Plantas Medicinais , Salmonella enterica , 5-Metoxipsoraleno/farmacologia , Antibacterianos/farmacologia , Antibacterianos/química , Farmacorresistência Bacteriana Múltipla , México , Simulação de Acoplamento Molecular , Proteínas Associadas à Resistência a Múltiplos Medicamentos , Plantas Medicinais/química , Salmonella enterica/efeitos dos fármacos , Compostos Fitoquímicos/química , Compostos Fitoquímicos/farmacologia
6.
Eur J Pharmacol ; 933: 175242, 2022 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-36058290

RESUMO

Microglia-mediated neuroinflammation plays a vital role in the pathogenesis of ischemic stroke, which serves as a prime target for developing novel therapeutic agent. However, feasible and effective agents for controlling neuroinflammation are scarce. Bergapten were acknowledged to hold therapeutic potential in restricting inflammation in multiple diseases, including peripheral neuropathy, migraine headaches and osteoarthritis. Here, we aimed to investigate the impact of bergapten on microglia-mediated neuroinflammation and its therapeutic potential in ischemic stroke. Our study demonstrated that bergapten significantly reduced the expression of pro-inflammatory cytokines and the activation of NF-κB signaling pathway in LPS-stimulated primary microglia. Mechanistically, bergapten suppressed cellular potassium ion efflux by inhibiting Kv1.3 channel and inhibits the degradation of Carbonyl reductase 1 induced by LPS, which might contribute to the anti-inflammatory effect of bergapten. Furthermore, bergapten suppressed microglial activation and post-stroke neuroinflammation in an experimental stroke model, leading to reduced infarct size and improved functional recovery. Thus, our study identified that bergapten might be a potential therapeutic compound for the treatment of ischemic stroke.


Assuntos
Lesões Encefálicas , AVC Isquêmico , Canal de Potássio Kv1.3/metabolismo , 5-Metoxipsoraleno/farmacologia , Anti-Inflamatórios/farmacologia , Lesões Encefálicas/metabolismo , Carbonil Redutase (NADPH)/metabolismo , Citocinas/metabolismo , Humanos , AVC Isquêmico/tratamento farmacológico , Lipopolissacarídeos/farmacologia , Microglia , NF-kappa B/metabolismo , Doenças Neuroinflamatórias , Potássio/metabolismo
7.
Toxicol Appl Pharmacol ; 429: 115697, 2021 10 15.
Artigo em Inglês | MEDLINE | ID: mdl-34428446

RESUMO

Sporadic Alzheimer's disease (SAD) is a slowly progressive neurodegenerative disorder. This study aimed to investigate neuroprotective potential of tadalafil (TAD) and bergapten (BG) in SAD-induced cognitive impairment in mice. SAD was induced by single injection of streptozotocin (STZ; 3 mg/kg, ICV). STZ resulted in AD-like pathologies including Aß deposition, tau aggregation, impaired insulin and Wnt/ß-catenin signaling, as well as autophagic dysfunction and neuroinflammation. Administration of TAD or BG at doses of 20 and 25 mg/kg, respectively, for 21 consecutive days attenuated STZ-induced hippocampal insult, preserved neuronal integrity, and improved cognitive function in the Morris water maze and object recognition tests paralleled by reduction in Aß expression by 79 and 89% and tau hyperphosphorylation by 60 and 61%, respectively. TAD and BG also enhanced protein expression of pAkt, pGSK-3ß, beclin-1 and methylated protein phosphatase 2A (PP2A) and gene expression of cyclin D1, while raised BDNF immunoreactivity. Furthermore, TAD and BG boosted hippocampal levels of cGMP, PKG, Wnt3a, and AMPK and reduced expression of ß-catenin and mTOR by 74% and 51%, respectively. TAD and BG also halted neuroinflammation by reducing IL-23 and IL-27 levels, as well as protein expression of NF-κB by 62% & 61%, respectively. In conclusion, this study offers novel insights on the neuroprotective effects of TAD or BG in the management of SAD as evidenced by improved cognitive function and histological architecture. This could be attributed to modulation of the crosstalk among PI3K/Akt/GSK-3ß, PP2A, mTOR/autophagy, cGMP/PKG, and Wnt/ß-catenin signaling cascades and mitigation of neuroinflammation.


Assuntos
5-Metoxipsoraleno/farmacologia , Proteínas Quinases Ativadas por AMP/metabolismo , Doença de Alzheimer/prevenção & controle , Anti-Inflamatórios/farmacologia , Hipocampo/efeitos dos fármacos , Doenças Neuroinflamatórias/prevenção & controle , Fosfatidilinositol 3-Quinase/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Serina-Treonina Quinases TOR/metabolismo , Tadalafila/farmacologia , Via de Sinalização Wnt/efeitos dos fármacos , Doença de Alzheimer/induzido quimicamente , Doença de Alzheimer/enzimologia , Doença de Alzheimer/imunologia , Peptídeos beta-Amiloides/metabolismo , Animais , Comportamento Animal/efeitos dos fármacos , Cognição/efeitos dos fármacos , Modelos Animais de Doenças , Hipocampo/enzimologia , Hipocampo/imunologia , Masculino , Camundongos , Teste do Labirinto Aquático de Morris , Doenças Neuroinflamatórias/induzido quimicamente , Doenças Neuroinflamatórias/enzimologia , Doenças Neuroinflamatórias/imunologia , Teste de Campo Aberto , Fosforilação , Estreptozocina , Proteínas tau/metabolismo
8.
Acta Biochim Biophys Sin (Shanghai) ; 53(6): 683-696, 2021 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-33772282

RESUMO

The bacteria-mediated inflammatory conditions adversely affect the osseointegration process of endosseous implants, which can even lead to implant malfunction or failure. Local drug delivery has been designed to exert anti-inflammatory and antibacterial activities, but whether this strategy has an effect on the compromised osseointegration under inflammation has rarely been studied. The present study focused on the osteoinductive efficacy of two known phytoestrogens [bergapten (BP) and quercetin (QE)] on implant sites under multiple bacteria-infected conditions in situ. Furthermore, the gene expression profiles of rat bone mesenchymal stem cells (rBMSCs) treated with BP and QE in the presence of Porphyromonas gingivalis-derived lipopolysaccharide were identified. The results showed that both drugs, especially QE, had significant potentiating effects on promoting osteogenic differentiation of rBMSCs, resisting multiple pathogens, and reducing inflammatory activity. Meanwhile, RNA sequencing analysis highlighted the enriched gene ontology terms and the differentially expressed genes (Vps25, Il1r2, Csf3, Efemp1, and Ccl20) that might play essential roles in regulating the above tri-effects, which provided the basis for the drug delivery system to be used as a novel therapeutic strategy for integrating peri-implant health. Overall, our study confirmed that QE appeared to outperform BP in osteogenesis and bacterial killing but not in anti-inflammation. Moreover, both drugs possess favorable tri-effects and can serve as the pivotal agents for the drug delivery system to boost osseointegration at inflammatory implant sites.


Assuntos
5-Metoxipsoraleno/farmacologia , Antibacterianos/farmacologia , Anti-Inflamatórios/farmacologia , Células-Tronco Mesenquimais/efeitos dos fármacos , Células-Tronco Mesenquimais/metabolismo , Osteogênese/efeitos dos fármacos , Fitoestrógenos/farmacologia , Quercetina/farmacologia , Animais , Biofilmes/efeitos dos fármacos , Diferenciação Celular/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Células Cultivadas , Sistemas de Liberação de Medicamentos/métodos , Lipopolissacarídeos/farmacologia , Masculino , Osseointegração/efeitos dos fármacos , Porphyromonas gingivalis/fisiologia , Próteses e Implantes/microbiologia , Ratos , Ratos Sprague-Dawley , Transcriptoma/efeitos dos fármacos
9.
ACS Chem Neurosci ; 10(6): 3008-3017, 2019 06 19.
Artigo em Inglês | MEDLINE | ID: mdl-31064179

RESUMO

Bergapten, a furanocoumarin derivative found in a variety of medicinal plants, is documented to possess anti-inflammatory activity. However, whether bergapten is useful in alleviating the symptoms as well as the progress of peripheral neuropathy is not yet studied. The current investigation has been designed to explore the effect of bergapten on vincristine-induced neuropathic pain. Rats were grouped as normal, neuropathic control (vincristine), gabapentin, and bergapten treated groups with five animals in each group. Vincristine (100 µg/kg, i.p.) was administered for 10 days with 2 days break. Gabapentin (60 mg/kg, i.p.) and bergapten (10 mg/kg i.p.) treatments were given once daily for 14 days. The animals were assessed for hyperalgesia and allodynia. After 14 days, animals were sacrificed to detect plasma pro-inflammatory cytokines (TNF α, IL-1ß), spinal cord, and sciatic nerve oxidative stress and expression of iNOS, COX-2, and NFkB in the spinal cord. There was a marked reduction in pain behaviors in the bergapten group as compared to the vincristine group. Bergapten also attenuated pro-inflammatory cytokines (TNFα and IL-1ß), oxidative stress, and expression of NFkB, COX-2, and iNOS. Overall the current study concludes that bergapten could serve as a potential lead to drug development for the treatment of neuropathic pain.


Assuntos
5-Metoxipsoraleno/farmacologia , Anti-Inflamatórios/farmacologia , Antineoplásicos Fitogênicos/toxicidade , Neuralgia/induzido quimicamente , Vincristina/toxicidade , Animais , Citocinas/efeitos dos fármacos , Inflamação/metabolismo , Masculino , NF-kappa B/efeitos dos fármacos , NF-kappa B/metabolismo , Neuralgia/metabolismo , Ratos , Transdução de Sinais/efeitos dos fármacos
10.
FEBS Open Bio ; 9(6): 1144-1152, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31037830

RESUMO

Osteoarthritis (OA) is a chronic degenerative disease that commonly affects the elderly. Current drug therapies for treating OA may cause adverse side effects, and so there remains a need to develop alternative treatments. Bergapten (BG) is a coumarin phytohormone that is widely found in fruits and has antioxidative and anti-inflammatory effects. Here, we tested the hypothesis that BG may restrict the progression of OA by examining its effect on OA chondrocytes. We observed that BG significantly ameliorated interleukin (IL)-1ß-induced expression of inflammatory cytokines and mediators, including interleukin 1 (Il-1), interleukin 6 (Il-6), tumor necrosis factor α (Tnf-α), cyclooxygenase 2 (Cox-2) and matrix metalloproteinase 13 (Mmp-13), maintained chondrocyte phenotype, and promoted the secretion of cartilage-specific extracellular matrix. We provide evidence that BG exerts its anti-inflammatory effect by activating the ANP32A/ATM signaling pathway, which was recently verified to be associated with OA. In conclusion, these findings indicate that BG may be a potential candidate for treatment of OA.


Assuntos
5-Metoxipsoraleno/farmacologia , Anti-Inflamatórios/farmacologia , Proteínas Mutadas de Ataxia Telangiectasia/metabolismo , Proteínas Nucleares/metabolismo , Osteoartrite/metabolismo , Extratos Vegetais/farmacologia , Reguladores de Crescimento de Plantas/farmacologia , Animais , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Condrócitos/efeitos dos fármacos , Ciclo-Oxigenase 2/metabolismo , Citocinas/metabolismo , Ficus/química , Inflamação/tratamento farmacológico , Articulação do Joelho/citologia , Metaloproteinase 13 da Matriz/metabolismo , Ratos , Ratos Sprague-Dawley , Transdução de Sinais/efeitos dos fármacos
11.
Inflammopharmacology ; 27(4): 749-760, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30953227

RESUMO

In continuation with our previous studies on osthole, bergapten, a closely related furanocoumarin was investigated for its ameliorative effect on chemically induced neurogenic and inflammatory hyperalgesia and inflammation in mice. Chemical hyperalgesia and inflammation was induced by administration of formalin (intraplantar), acetic acid (intraperitoneal) and carrageenan (intraplantar) to different groups of animals. Pain responses were quantified and median effective dose (ED50) of bergapten was calculated. Lipopolysaccharide challenge was administered to study inflammatory cytokines which were analyzed in plasma using ELISA. The expression of poly ADP-ribose polymerase (PARP), cyclooxygenase (COX-2) and inducible nitric oxide synthase (iNOS) was quantified by immnofluorescence staining. Bergapten was found to ameliorate both neurogenic and inflammatory hyperalgesia precipitated by formalin, acetic acid induced writhing and carrageenan induced paw inflammation with ED50 dose of 2.96 mg/kg. Bergapten also significantly decreased the levels of TNF-α and IL-6 and the expression of PARP, COX-2 and iNOS in the spine. It is concluded that bergapten is an interesting molecule with significant analgesic and anti-inflammatory activity emanating through the modulation of multiple pain mediating pathways.


Assuntos
5-Metoxipsoraleno/farmacologia , Ciclo-Oxigenase 2/metabolismo , Citocinas/metabolismo , Inflamação/tratamento farmacológico , Óxido Nítrico Sintase Tipo II/metabolismo , Dor Nociceptiva/tratamento farmacológico , Inibidores de Poli(ADP-Ribose) Polimerases/metabolismo , Coluna Vertebral/efeitos dos fármacos , Analgésicos/farmacologia , Animais , Anti-Inflamatórios/farmacologia , Carragenina/farmacologia , Feminino , Hiperalgesia/tratamento farmacológico , Hiperalgesia/metabolismo , Inflamação/metabolismo , Mediadores da Inflamação/metabolismo , Lipopolissacarídeos/farmacologia , Masculino , Camundongos , Dor Nociceptiva/metabolismo , Coluna Vertebral/metabolismo
12.
Int J Mol Sci ; 20(6)2019 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-30875838

RESUMO

This study evaluated whether bergapten and methoxsalen could prevent diabetes-induced osteoporosis and its underlying mechanism. For 10 weeks, bergapten or methoxsalen (0.02%, w/w) was applied to diabetic mice that were provided with a high-fat diet and streptozotocin. Bone mineral density (BMD) and microarchitecture quality were significantly reduced in the diabetic control group; however, both bergapten and methoxsalen reversed serum osteocalcin, bone-alkaline phosphatase and femur BMD. These coumarin derivatives significantly increased bone volume density and trabecular number, whereas they decreased the structure model index of femur tissue in diabetic mice. Conversely, tartrate-resistant acid phosphatase 5 (TRAP) staining revealed that these derivatives reduced osteoclast numbers and formation in diabetic bone tissue. Additionally, both bergapten and methoxsalen tended to downregulate the expression of osteoclast-related genes such as receptor activator of nuclear factor kappa-B ligand (RANKL), nuclear of activated T-cells, cytoplasmic 1 (NFATc1) and TRAP in diabetic femurs, with NFATc1 and TRAP expression showing significant reductions. Our data suggest that both bergapten and methoxsalen prevent diabetic osteoporosis by suppressing bone resorption.


Assuntos
5-Metoxipsoraleno/administração & dosagem , Diabetes Mellitus Experimental/complicações , Metoxaleno/administração & dosagem , Osteogênese/efeitos dos fármacos , Osteoporose/prevenção & controle , 5-Metoxipsoraleno/farmacologia , Fosfatase Alcalina/metabolismo , Animais , Densidade Óssea/efeitos dos fármacos , Diabetes Mellitus Experimental/induzido quimicamente , Diabetes Mellitus Experimental/genética , Dieta Hiperlipídica/efeitos adversos , Modelos Animais de Doenças , Regulação da Expressão Gênica/efeitos dos fármacos , Humanos , Masculino , Metoxaleno/farmacologia , Camundongos , Fatores de Transcrição NFATC/genética , Osteocalcina/sangue , Osteoporose/genética , Ligante RANK/genética , Estreptozocina , Fosfatase Ácida Resistente a Tartarato/genética
13.
Mol Med Rep ; 19(3): 1972-1978, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30628674

RESUMO

The principal subtype of lung cancer, non­small cell lung cancer (NSCLC) is a life­threatening malignancy that causes high mortality rates. Bergapten (5­methoxypsoralen) has been identified to possess anticancer activity against a number of carcinomas. In the present study, the effects of bergapten on NSCLC cells were investigated. The cell viability was determined by MTT assay. Cell cycle distribution was analyzed using flow cytometry. Protein expression and kinase cascade were demonstrated using western blot analysis. The results demonstrated that treatment with bergapten (50 µM for 48 h) inhibited the viability of A549 and NCI­H460 NSCLC cells to 79.1±2.8% and 74.5±3.1%, respectively, compared with the controls. It was identified that bergapten induced G1 phase accumulation in A549 and NCI­H460 cells between ~58 and 75% (P<0.01). In addition, bergapten significantly increased the sub­G1 phase ratio to ~9% (P<0.05) in the two cell types. Further investigation demonstrated that bergapten upregulated the expression of cellular tumor antigen p53 (p53) and its downstream proteins cyclin­dependent kinase inhibitor 1 and cyclin­dependent kinase inhibitor 1B, whereas, it downregulated the expression of cyclin D1 and CDK4. Overall, these results suggested that bergapten may inhibit cell viability and trigger G1 arrest and apoptosis in A549 and NCI­H460 cells, which may be attributed to the activation of p53­mediated cascades. Therefore, bergapten may be beneficial for NSCLC treatment.


Assuntos
Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Ciclina D1/genética , Quinase 4 Dependente de Ciclina/genética , Proteína Supressora de Tumor p53/genética , 5-Metoxipsoraleno/farmacologia , Células A549 , Apoptose/efeitos dos fármacos , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular/efeitos dos fármacos , Pontos de Checagem da Fase G1 do Ciclo Celular/efeitos dos fármacos , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Transdução de Sinais/efeitos dos fármacos
14.
Zhongguo Ying Yong Sheng Li Xue Za Zhi ; 35(6): 563-568, 2019 Nov.
Artigo em Chinês | MEDLINE | ID: mdl-32239867

RESUMO

OBJECTIVE: To study the effects of bergapten (BP) on damages of osteocytes MLO-Y4 induced by tricalcium phosphate (TCP) wear particles and its mechanism. ;Methods: MLO-Y4 cells were treated with TCP wear particles for 48 h to establish the model of osteocytes injuries in vitro. The MLO-Y4 cells were divided into the following five groups: control group, TCP wear particles treated (0.1 mg/ml) group, bergapten (1, 5 and 20 µmol/L) treated groups. MTT assay and Calcein-AM staining were used to determine the viability of MLO-Y4 cells; Hoechst 33342 staining and the flow cytometry were applied to detect the apoptosis of MLO-Y4; real-time PCR was performed to examine the mRNA levels of dentin matrix protein1 (DMP-1), sclerostin (SOST) and fibroblast growth factor23 (FGF23); Western blot was performed to examine protein expressions of glucose-regulated protein 78 (GRP78), protein kinase R-like ER kinase (PERK) phospho-PERK (p-PERK), eukaryotic initiation factor 2α (eIF2α), phospho-eIF2α (p-eIF2α), activating transcription factor 4 (AFT4), C/EBP homologous protein (CHOP) and caspase-3 in MLO-Y4 cells. ;Results: Compared with control group, the MLO-Y4 viability and DMP-1 mRNA level in TCP group were decreased significantly (P<0.05), while the percentage of apoptosis and mRNA levels of SOST and FGF23 were obviously increased (P<0.05), and protein expressions of GRP78, AFT4, CHOP, p-PERK/PERK and p-eIF2α/eIF2α were up-regulated significantly in MLO-Y4 cells (P<0.05). Compared with TCP group, the damages of MLO-Y4 and cell apoptosis in bergapten treated groups were decrease obviously (P<0.05), the expressions of GRP78, AFT4, CHOP, p-PERK/PERK and p-eIF2α/eIF2α were down-regulated remarkably (P<0.05). ;Conclusion: Bergapten can inhibit osteocytes damages induced by TCP wear particles, which may be related to reducing ER stress and PERK pathway activation.


Assuntos
5-Metoxipsoraleno/farmacologia , Fosfatos de Cálcio/efeitos adversos , Osteócitos/efeitos dos fármacos , Animais , Apoptose , Linhagem Celular , Chaperona BiP do Retículo Endoplasmático , Estresse do Retículo Endoplasmático , Fator de Crescimento de Fibroblastos 23 , Camundongos , Transdução de Sinais , eIF-2 Quinase/metabolismo
15.
Biochem Biophys Res Commun ; 509(2): 329-334, 2019 02 05.
Artigo em Inglês | MEDLINE | ID: mdl-30579598

RESUMO

Bergapten (BP), derived from Cnidium monnieri (L.) Cusson, is an ingredient widely used in traditional Chinese medicine and has important biological and pharmacological activities. However, the effect of BP on ovariectomy-induced osteoporosis and the underlying mechanism are not entirely clear. In this study, we investigated the effects of BP on ovariectomy-induced osteoporosis and receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis in vivo and in vitro, and explored the underlying mechanism. We found that BP treatment exerted beneficial effects on ovariectomy-induced osteoporosis in vivo. Further, BP attenuated osteoclastogenesis in bone marrow macrophages (BMMs) and RAW264.7 cells without any cytotoxicity. Additionally, BP specifically inhibited RANKL-induced NF-κB and JNK signaling,but did not suppress p38 and ERK. At the mRNA level, BP inhibits the OC-associated transcription factor NFATc1 and c-fos, thereby affecting the expression of OC differentiation-related genes. Moreover, BP disrupted the formation of F-actin rings, which are important for bone-resorbing activity, and impairs OC bone resorption. Therefore, BP may be a useful alternative therapy for post-menopausal osteoporosis.


Assuntos
5-Metoxipsoraleno/farmacologia , Conservadores da Densidade Óssea/farmacologia , Reabsorção Óssea/prevenção & controle , NF-kappa B/genética , Osteogênese/efeitos dos fármacos , Osteoporose/prevenção & controle , Ligante RANK/antagonistas & inibidores , Actinas/genética , Actinas/metabolismo , Animais , Reabsorção Óssea/etiologia , Reabsorção Óssea/genética , Reabsorção Óssea/metabolismo , Feminino , Regulação da Expressão Gênica , Humanos , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Macrófagos/efeitos dos fármacos , Macrófagos/metabolismo , Macrófagos/patologia , Camundongos , Camundongos Endogâmicos C57BL , Proteína Quinase 1 Ativada por Mitógeno/genética , Proteína Quinase 1 Ativada por Mitógeno/metabolismo , Proteína Quinase 3 Ativada por Mitógeno/genética , Proteína Quinase 3 Ativada por Mitógeno/metabolismo , NF-kappa B/antagonistas & inibidores , NF-kappa B/metabolismo , Fatores de Transcrição NFATC/genética , Fatores de Transcrição NFATC/metabolismo , Osteoclastos/efeitos dos fármacos , Osteoclastos/metabolismo , Osteoclastos/patologia , Osteogênese/genética , Osteoporose/etiologia , Osteoporose/genética , Osteoporose/metabolismo , Ovariectomia/efeitos adversos , Cultura Primária de Células , Proteínas Proto-Oncogênicas c-fos/genética , Proteínas Proto-Oncogênicas c-fos/metabolismo , Ligante RANK/genética , Ligante RANK/metabolismo , Ligante RANK/farmacologia , Células RAW 264.7 , Proteínas Quinases p38 Ativadas por Mitógeno/genética , Proteínas Quinases p38 Ativadas por Mitógeno/metabolismo
16.
Environ Toxicol ; 34(3): 303-311, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30576070

RESUMO

Bergapten is a natural compound and has potent anticancer activities. In this study, we explored the cytotoxicity of bergapten on colorectal cancer (CRC) cell DLD-1 and LoVo and its underlying mechanisms. We observed that bergapten (30 and 50 µM) decreased the viability of the CRC cells and induced the G0/G1 and sub-G1 phase arrest. Furthermore, immunoblotting results indicated that bergapten increased p53, phospho-p53(Ser-46), p21, PUMA, Bax, PTEN, and the caspase-9 and caspase-3 cleavage, but decreased cyclin E, CDK2, and phosphor-AKT(Ser-473) in the CRC cells. Inhibition of p53 by pifithrin-α reversed the bergapten-induced p53-mediated apoptotic cascade and restored the survival signaling and cell viability. Collectively, our findings reveal that bergapten decrease the cell viability and induce cell cycle arrest in the CRC cells, which may be attributed to p53-mediated apoptotic cascade, upregulation of p21 and PTEN, and inhibition of AKT.


Assuntos
5-Metoxipsoraleno/farmacologia , Apoptose/efeitos dos fármacos , Neoplasias Colorretais/fisiopatologia , Inibidor de Quinase Dependente de Ciclina p21/metabolismo , Pontos de Checagem da Fase G1 do Ciclo Celular/efeitos dos fármacos , PTEN Fosfo-Hidrolase/metabolismo , Proteína Supressora de Tumor p53/metabolismo , Linhagem Celular Tumoral , Sobrevivência Celular/efeitos dos fármacos , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/genética , Neoplasias Colorretais/metabolismo , Ciclina E/genética , Ciclina E/metabolismo , Quinase 2 Dependente de Ciclina/genética , Quinase 2 Dependente de Ciclina/metabolismo , Inibidor de Quinase Dependente de Ciclina p21/genética , Humanos , Proteínas Oncogênicas/genética , Proteínas Oncogênicas/metabolismo , PTEN Fosfo-Hidrolase/genética , Transdução de Sinais/efeitos dos fármacos , Proteína Supressora de Tumor p53/genética
17.
Comput Biol Chem ; 78: 242-259, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30584950

RESUMO

Anethum sowa L. has been used as a spice herb in the Asian and European culinary systems to add flavour and taste. The studied plant has diverse folkloric medicinal value. Present study was designed to isolate phytochemicals from the hexane, chloroform and ethyl acetate extracts of the roots by various chromatographic techniques. Based on spectral analysis (IR, LC-MS, NMR) the isolated compounds were identified as physcione (1), ß-sitosterol (2), stigmasterol (3), 2-oxo-3-propyl-2H-chromene-7-carboxylic acid (4), bergapten (5), 3-ethyl-7-hydroxy-2H-chromen-2-one (6) and graveolone (7). The mentioned compounds have been isolated for the first time from the roots part of the plant. Based on extensive literature review, physcione and bergapten were inferred to exhibit crucial bioactivities including inhibitory efficacy against various forms of cancer. Accordingly, in the present research approach molecular docking investigations of the isolated phytochemicals have been robustly executed with different oncogenes that have been reported to be actively involved in various forms of carcinoma. In silico investigations encompassing molecular docking analysis and drug-likeness profiling was executed to estimate the potential therapeutic tendencies of the phytochemicals targeted towards effective cancer therapy. Current investigation offers meaningful know-how pertaining to potential anticancer activities of the phytochemicals extracted from the roots of Anethum sowa L. and might open up new revenues towards effective drug development against cancer.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Apiaceae/química , Simulação de Acoplamento Molecular , Extratos Vegetais/farmacologia , Raízes de Plantas/química , 5-Metoxipsoraleno/química , 5-Metoxipsoraleno/isolamento & purificação , 5-Metoxipsoraleno/farmacologia , Antineoplásicos Fitogênicos/química , Antineoplásicos Fitogênicos/isolamento & purificação , Benzopiranos/química , Benzopiranos/isolamento & purificação , Benzopiranos/farmacologia , Ácidos Carboxílicos/química , Ácidos Carboxílicos/isolamento & purificação , Ácidos Carboxílicos/farmacologia , Proliferação de Células/efeitos dos fármacos , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Metoxaleno/análogos & derivados , Metoxaleno/química , Metoxaleno/isolamento & purificação , Metoxaleno/farmacologia , Extratos Vegetais/química , Extratos Vegetais/isolamento & purificação , Sitosteroides/química , Sitosteroides/isolamento & purificação , Sitosteroides/farmacologia , Estigmasterol/química , Estigmasterol/isolamento & purificação , Estigmasterol/farmacologia
18.
Biomed Pharmacother ; 108: 297-308, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30227322

RESUMO

Oxysterol receptors LXRs (α and ß) are recently reported to be one of the novel and potential therapeutic targets in reducing cell proliferation and tumor growth in different system model. Activation of LXRs is correlated with modification of PI3K/Akt pathway. LXRs are also found to play a critical role in maintaining lipid homeostatais by regulating ABCA1, IDOL, SREBP1, LDLR and also certain lipogenic genes such as FASN and SCD1. In the present study a potential furanocoumarin, Bergapten (BeG) has been evaluated for its anticancer property on Hepatocellular Carcinoma (HCC) on LXR axis. The molecular docking analysis was carried out for BeG on LXR (α & ß) using Maestro tool and compared with reference ligands. This was followed by in vitro (HepG2 cell lines) and in vivo (on NDEA induced HCC in Wistar albino rats) anticancer evaluation of BeG. The docking results revealed polar and hydrophobic interactions of BeG with LXR (α,ß). The in vitro studies revealed the potential of BeG in lowering the accumulation of lipid droplets in HepG2 cells which was correlated with increase in LXR (α,ß) protein expressions. Furthermore, the in vivo studies demonstrated the potential of BeG in ameliorating the cancer induced alterations in body weight, liver weight and significant restoration of the changes in mRNA and protein expressions of LXR(α,ß), ABCA1, IDOL, SREBP1 and LDLR. BeG also modulated the expressions of PI3K, Akt and certain lipogenic genes like FASN and SCD1 and reduced the lipid droplets level in liver cancer cells. These results provide evidence and validates the critical role of BeG in maintaining the lipid homeostasis and justifies its anticancer potential against NDEA-induced HCC.


Assuntos
5-Metoxipsoraleno/uso terapêutico , Carcinogênese/patologia , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/metabolismo , Receptores X do Fígado/metabolismo , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Receptores de LDL/metabolismo , 5-Metoxipsoraleno/química , 5-Metoxipsoraleno/farmacologia , Animais , Peso Corporal/efeitos dos fármacos , Carcinogênese/genética , Dietilnitrosamina , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Células Hep G2 , Humanos , Gotículas Lipídicas/metabolismo , Fígado/efeitos dos fármacos , Fígado/patologia , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patologia , Modelos Biológicos , Simulação de Acoplamento Molecular , Tamanho do Órgão/efeitos dos fármacos , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Ratos Wistar , Transdução de Sinais/efeitos dos fármacos
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