scholarly journals Exploring the mechanism of the anti-hypertension properties of Morinda citrifolia through a bioinformatics approach

2021 ◽  
Vol 48 (3) ◽  
Author(s):  
Dian Laila Purwaningroom ◽  
◽  
Sholihatul Maghfirah ◽  
Muhaimin Rifai ◽  
Widodo ◽  
...  

Traditionally, noni (Morinda citrifolia L.) has been used to treat hypertension in tropical countries. The noni extract was proven to reduce blood pressure and relatively safe to the liver and kidney in the animal model. This extract could inhibit angiotensin-converting enzyme (ACE) and plays a pivotal role in controlling blood pressure. However, the active compound of the extract that has function as the ACE inhibitor is still unknown. Therefore, the objective of this study was to examine the mechanism of anti-hypertension of noni methanol extract as well as its active compound that acts as the ACE inhibitor by using a bioinformatics approach. An enzyme activity analysis showed that noni methanol extract inhibits ACE activity based on a dose-dependent manner. Further analysis using bioinformatic analysis suggested that three active compounds of Morinda citrifolia, namely linoleic acid, palmitate, and oleic acid, might be bound to PPARA and NOS3 protein. The two targeted protein is predicted as a regulator of blood pressure through the PPARA pathway. The findings showed that M. citrifolia has numerous active compounds containing multiple protein targets, which regulate blood pressure. However, in vitro and in vivo research should be conducted to provide evidence for the mechanism.

2020 ◽  
Vol 2020 ◽  
pp. 1-15 ◽  
Author(s):  
Xinyi Lu ◽  
Xingli Wu ◽  
Lin Jing ◽  
Lingjia Tao ◽  
Yingxuan Zhang ◽  
...  

Objective. To analyze the active compounds, potential targets, and diseases of JianPi Fu Recipe (JPFR) based on network pharmacology and bioinformatics and verify the potential biological function and mechanism of JPFR in vitro and in vivo. Methods. Network pharmacology databases including TCMSP, TCM-PTD, TCMID, and DrugBank were used to screen the active compounds and potential drug targets of JPFR. Cytoscape 3.7 software was applied to construct the interaction network between active compounds and potential targets. The DAVID online database analysis was performed to investigate the potential effective diseases and involved signaling pathways according to the results of the GO function and KEGG pathways enrichment analysis. To ensure standardization and maintain interbatch reliability of JPFR, High Performance Liquid Chromatography (HPLC) was used to establish a “chemical fingerprint.” For biological function validation, the effect of JPFR on the proliferation and migration of CRC cells in vitro was investigated by CCK-8 and transwell and wound healing assay, and the effect of JPFR on the growth and metastasis of CRC cells in vivo was detected by building a lung metastasis model in nude mice and in vivo imaging. For the potential mechanism validation, the expressions of MALAT1, PTBP-2, and β-catenin in CRC cells and transplanted CRC tumors were detected by real-time PCR, western blot, and immunohistochemical staining analysis. Results. According to the rules of oral bioavailability (OB) > 30% and drug-likeness (DL) > 0.18, 244 effective compounds in JPFR were screened out, as well as the corresponding 132 potential drug targets. By the analysis of DAVID database, all these key targets were associated closely with the cancer diseases such as prostate cancer, colorectal cancer, bladder cancer, small cell lung cancer, pancreatic cancer, and hepatocellular carcinoma. In addition, multiple signaling pathways were closely related to JPFR, including p53, Wnt, PI3K-Akt, IL-17, HIF-1, p38-MAPK, NF-κB, PD-L1 expression and PD-1 checkpoint pathway, VEGF, JAK-STAT, and Hippo. The systematical analysis showed that various active compounds of JPFR were closely connected with Wnt/β-catenin, EGFR, HIF-1, TGFβ/Smads, and IL6-STAT3 signaling pathway, including kaempferol, isorhamnetin, calycosin, quercetin, medicarpin, phaseol, spinasterol, hederagenin, beta-sitosterol, wighteone, luteolin, and isotrifoliol. For in vitro experiments, the migration and growth of human CRC cells were inhibited by the JPFR extract in a dose-dependent way, and the expression of MALAT1, PTBP-2, β-catenin, MMP7, c-Myc, and Cyclin D1 in CRC cells were downregulated by the JPFR extract in a dose-dependent way. For in vivo metastasis experiments, the numbers of lung metastasis were found to be decreased by the JPFR extract in a dose-dependent manner, and the expressions of metastasis-associated genes including MALAT1, PTBP-2, β-catenin, and MMP7 in the lung metastases were downregulated dose dependently by the JPFR extract. For the orthotopic transplanted tumor experiments, the JPFR extract could inhibit the growth of orthotopic transplanted tumors and downregulate the expression of c-Myc and Cyclin D1 in a dose-dependent manner. Moreover, the JPFR extract could prolong the survival time of tumor-bearing mice in a dose-dependent manner. Conclusions. Through effective network pharmacology analysis, we found that JPFR contains many effective compounds which may directly target cancer-associated signaling pathways. The in vitro and in vivo experiments further confirmed that JPFR could inhibit the growth and metastasis of CRC cells by regulating β-catenin signaling-associated genes or proteins.


2019 ◽  
Vol 8 (1) ◽  
pp. 9-22
Author(s):  
Siti Munawaroh ◽  
Dian Laila Purwaningroom ◽  
Dianita Rifqia Putri ◽  
Cholik Harun Rosjidi

AbstractBlood pressure regulation is basically control of amount of blood flow to certain tissues according to their metabolic needs. The complexity of the mechanisms involved leading to the assumption that there are many functional and structural proteins involved in blood pressure regulation. Indonesian people, especially those living on the island of Java, usually consume star fruit Averrhoa carambola to reduce blood pressure, but the content of bioactive compounds and the mechanism of their interference with proteins is still unknown. This study aimed to determine the bioactive compound content of Averrhoa carambola's methanol extract and its mechanism of interference with the target proteins. An amount of 200 g Averrhoa carambola dried simplicia was extracted by the maceration method using absolute methanol. The extract was then subjected to phytochemical tests using the Gas Chromatography-Mass Spectrometry (GC-MS) method. Based on the results obtained from the GC-MS phytochemical test, the names of the bioactive compounds found in the Averrhoa carambola methanol extract were obtained. The compounds are then analyzed for their target protein in the human body using the STITCH database (http://stitch.embl.de/). The proteins that had been predicted to be the target of active compounds of Averrhoa carambola methanol extract were analyzed for interactions between proteins using the STRINGdb database (https://string-db.org/cgi/input.pl). Based on this research, it can be concluded that Averrhoa carambola fruit methanol extract can help lower blood pressure by producing NO and acting as antioxidants. However, further research (in-vitro and in-vivo) needs to be done to prove the mechanism. AbstrakRegulasi tekanan darah adalah jumlah kontrol aliran darah ke jaringan tertentu sesuai dengan kebutuhan metabolismenya. Kompleksnya mekanisme yang terlibat, memunculkan asumsi terdapat banyak protein fungsional maupun struktural yang terlibat dalam regulasi tekanan darah. Masyarakat Indonesia, terutama yang tinggal di pulau Jawa biasa mengkonsumsi buah belimbing untuk menurunkan tekanan darah, namun kandungan senyawa bioaktif dan mekanisme intervensinya terhadap protein-protein belum diketahui. Tujuan penelitian ini adalah untuk mengetahui kandungan senyawa bioaktif ekstrak metanol buah Averrhoa carambola dan mekanisme intervensinya terhadap protein-protein targetnya. Simplisia kering buah Averrhoa carambola sebanyak 200 g diekstraksi dengan metode maserasi menggunakan metanol absolut. Dari ekstrak tersebut dilakukan uji fitokimia dengan metode Gas chromatography–mass spectrometry (GC-MS) sehingga didapatkan nama-nama senyawa bioaktif yang terdapat pada ekstrak metanol Averrhoa carambola. Senyawa-senyawa tersebut kemudian dianalisis protein targetnya dalam tubuh manusia menggunakan database STITCH (http://stitch.embl.de/). Kemudian dianalisis interaksi antar protein menggunakan database STRINGdb (https://string-db.org/cgi/input.pl). Berdasarkan penelitian ini, ekstrak metanol buah Averrhoa carambola dapat membantu menurunkan tekanan darah dengan memproduksi NO dan berperan sebagai antioksidan. Namun, penelitian lebih lanjut (in-vitro dan in-vivo) perlu dilakukan untuk membuktikan mekanismenya


Author(s):  
Urmila U. Tambewagh ◽  
Supada Rambhau Rojatkar

Objective: Objective of the present study was to carry out in vivo anti-inflammatory and in vitro antioxidant activity of methanol extract of aerial part of the Blumea eriantha DC belonging to family Asteraceae.Methods: The shade dried aerial part of B. eriantha (0.5 kg) was powdered and extracted with methanol (1.5 x 3L) at room temperature (24h x 3). After filtration combined all the three extracts and were concentrated on rotary evaporator under reduced pressure at 40 °C, thereby providing crude methanol extract which was subsequently employed for further studies. Anti-inflammatory effect was studied by carrageenan-induced paw edema model in rats at dose level 100, 200, and 400 mg/kg. Acute oral toxicity study and in vitro antioxidant potential of the extract was also studied. The in vitro antioxidant activity of methanol extract of aerial part of Blumea eriantha DC was evaluated against 1,1-diphenyl-2-picrylhydrazyl (DPPH), hydrogen peroxide (H2O2) and hydroxyl (OH) radicalscavenging and reducing power assays.Results: The results indicate that methanol extract of Blumea eriantha (BEME, 400 mg/kg) exhibited significant inhibition (p<0.001) of increase in paw edema at 5th h. IC50 value of BEME showed significant antioxidant activity. The extract exhibits promising free radical scavenging effect of DPPH, H2O2, OH and reducing power in a dose-dependent manner up to 100µg/ml concentration while the reference standard Ascorbic acid demonstrated more scavenging potential than the methanol extract of Blumea eriantha The methanol extract was found to be safe at the dose of 2000 mg/kg.Conclusion: The results of the experimental study confirmed that methanol extract of Blumea eriantha DC possesses significant anti-inflammatory and antioxidant activity.


2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Hwayong Park ◽  
Kwang Hoon Song ◽  
Pil Mun Jung ◽  
Ji-Eun Kim ◽  
Hyunju Ro ◽  
...  

To identify the active compound arctigenin in Fructus Arctii (dried seed of medicinal plantArctium lappa) and to elucidate the inhibitory mechanism in melanogenesis, we analyzed melanin content and tyrosinase activity on B16BL6 murine melanoma and melan-A cell cultures. Water extracts of Fructus Arctii were shown to inhibit tyrosinase activity in vitro and melanin content inα-melanocyte stimulating hormone-stimulated cells to similar levels as the well-known kojic acid and arbutin, respectively. The active compound arctigenin of Fructus Arctii displayed little or no cytotoxicity at all concentrations examined and decreased the relative melanin content and tyrosinase activity in a dose-dependent manner. Melanogenic inhibitory activity was also identified in vivo with zebrafish embryo. To determine the mechanism of inhibition, the effects of arctigenin on tyrosinase gene expression and tyrosinase promoter activity were examined. Also in addition, in the signaling cascade, arctigenin dose dependently decreased the cAMP level and promoted the phosphorylation of extracellular signal-regulated kinase. This result suggests that arctigenin downregulates cAMP and the tyrosinase enzyme through its gene promoter and subsequently upregulates extracellular signal-regulated kinase activity by increasing phosphorylation in the melanogenesis signaling pathway, which leads to a lower melanin content.


1986 ◽  
Vol 251 (5) ◽  
pp. F810-F816 ◽  
Author(s):  
J. P. Grunfeld ◽  
L. Eloy ◽  
A. Araujo ◽  
F. Russo-Marie

The effects of glucocorticoid agonists RU 26988 (G) and dexamethasone (D) and antagonist RU 486 (AG) on aortic and renal prostaglandin (PG) production were studied in Wistar rats. Blood pressure increased in rats administered G (20 mg X kg-1 X day-1) during 1 or 3 days; such increase was prevented by AG (100 mg X kg-1 X day-1). Renal papillary PGE2 release was increased after a 3-day administration of G, and this was prevented by AG. Neither G nor AG altered basal 6-keto-PGF1 alpha aortic production. However, G inhibited and AG magnified the stimulatory effect of ionophore A 23187, added in vitro, on 6-keto-PGF1 alpha production; AG reversed G inhibition. In addition, AG alone (20 mg X kg-1 X day-1 X 3 days) enhanced the stimulatory effect of angiotensin II (10(-8) M), added in vitro, on 6-keto-PGF1 alpha release. In vitro studies were performed on renomedullary interstitial cells grown in culture; G and D depressed PGE2 production in a dose-dependent manner; AG at equimolar 10(-8) M concentration inhibited this effect. In conclusion, AG inhibits the effects of G on blood pressure and PG synthesis. G exerts strong depressor activity on in vitro PGE2 renal production, whereas in vivo effects are more complex. Endogenous G inhibits aortic prostacyclin production, an action unmasked by AG administration. Diminished stimulation of vascular prostacyclin synthesis may contribute to vascular hyperreactivity in G-induced hypertension.


2000 ◽  
Vol 278 (3) ◽  
pp. R628-R639 ◽  
Author(s):  
Zhi-Wei Yang ◽  
Asefa Gebrewold ◽  
Maja Nowakowski ◽  
Bella T. Altura ◽  
Burton M. Altura

In vitro extracellular Mg2+ concentration ([Mg2+]0) produces endothelium-dependent and endothelium-independent relaxations in rat aorta in a concentration-dependent manner. These relaxant effects of Mg2+ on intact rat aortic rings, but not denuded rat aortic rings, were suppressed by either N G-monomethyl-l-arginine (l-NMMA), N ω-nitro-l-arginine methyl ester (l-NAME), or methylene blue. The inhibitory effects of l-NMMA and l-NAME could be reversed partly by l-arginine. [Mg2+]0-induced dilatation in vivo in rat mesenteric arterioles and venules was almost completely inhibited by N G-nitro-l-arginine andl-NMMA. Removal of extracellular Ca2+concentration ([Ca2+]0) or buffering intracellular Ca2+ concentration in endothelial cells, with 10 μM 1,2-bis(2-aminophenoxy)ethane- N, N, N′, N′-tetraacetic acid-AM, markedly attenuated the relaxant effects of Mg2+. Mg2+ produced nitric oxide (NO) release from the intact aortic rings in a concentration-dependent manner. Removal of [Ca2+]0 diminished the increased NO release induced by elevated levels of [Mg2+]0. In vivo infusion of increasing doses (1–30 μM/min) of MgSO4, directly into the femoral veins of anesthetized rats, elicited significant concentration-dependent sustained increases in serum total Mg and concomitant decreases in arterial blood pressure. Before and after employment of various doses of MgSO4, intravenous administration of either l-NMMA (10 mg/kg) orl-NAME (10 mg/kg) increased (i.e., reversed) the MgSO4-lowered blood pressure markedly, and intravenous injection of l-arginine restored partially the increased blood pressure effects of both l-NMMA andl-NAME. Our results suggest that 1) small blood vessels are very dependent on NO release for Mg2+dilatations and 2) the endothelium-dependent relaxation induced by extracellular Mg2+ is mediated by release of endothelium-derived relaxing factor-NO from the endothelium, and requires Ca2+ and formation of guanosine 3′,5′-cyclic monophosphate.


Author(s):  
Zihang Chen ◽  
Huizhi Wang ◽  
Zongpu Zhang ◽  
Jianye Xu ◽  
Yanhua Qi ◽  
...  

Abstract Background Glioma stem cells (GSCs) are considered the initial cells of gliomas, contributing to therapeutic resistance. Patient-derived GSCs well recapitulate the heterogeneity of their parent glioma tissues, which can be classified into different subtypes. Likewise, previous works identified GSCs as two distinct subtypes, mesenchymal (MES) and proneural (PN) subtypes, and with general recognition, the MES subtype is considered a more malignant phenotype characterized by high invasion and radioresistance. Therefore, understanding the mechanisms involved in the MES phenotype is necessary for glioblastoma treatment. Methods Data for bioinformatic analysis were obtained from The Cancer Genome Atlas (TCGA) and The Gene Expression Omnibus (GEO) database. An antibody was used to block cell surface glucose-regulated protein 78 (csGRP78). Apoptosis and cell cycle analyses were performed to evaluate radiation damage. Immunofluorescence staining was applied to assess protein expression and distribution. Mass spectrometry combined with bioinformatic analysis was used to screen downstream molecules. Intracranial GSC-derived xenografts were established for in vivo experiments. Results Total GRP78 expression was associated with MES GSC stemness, and csGRP78 was highly expressed in MES GSCs. Targeting csGRP78 suppressed the self-renewal and radioresistance of MES GSCs in vitro and in vivo, accompanied by downregulation of the STAT3, NF-κB and C/EBPβ pathways. Mass spectrometry revealed the potential downstream β-site APP-cleaving enzyme 2 (BACE2), which was regulated by csGRP78 via lysosomal degradation. Knockdown of BACE2 inactivated NF-κB and C/EBPβ and significantly suppressed the tumorigenesis and radioresistance of MES GSCs in vitro and in vivo. Conclusions Cell surface GRP78 was preferentially expressed in MES GSCs and played a pivotal role in MES phenotype maintenance. Thus, blocking csGRP78 in MES GSCs with a high-specificity antibody might be a promising novel therapeutic strategy.


INDIAN DRUGS ◽  
2017 ◽  
Vol 54 (06) ◽  
pp. 53-57
Author(s):  
J. Meena ◽  
◽  
K .S. Santhy

Cancer has now been designated as a preventable disease with the increasing interest by the research community. The impartial administration of chemical treatments has now shifted to natural products due to the side effects observed with chemotherapy. In the present study, a pharmaceutical approach is undertaken to screen the anticancer potential of Cyclea peltata against breast cancer. We examined the in vitro anticancer potential of MCF-7 cancer cell lines by MTT assay using various concentrations of the methanol extract of the plant. In silico analysis were carried out by Schrodinger suite. We found that the active compounds present in the extract effectively inhibit the proliferation of cancer cells in dose dependent manner. Molecular docking analysis showed that the active compounds in the methanol extract are best for increasing the expression of tumor suppressor protein and thereby inhibit the cell proliferation. It can be conclud that the active compounds from the plant extract can act as better drug candidates for anticancer activity


1999 ◽  
Vol 27 (01) ◽  
pp. 63-71 ◽  
Author(s):  
Hyung Min Kim ◽  
Dong-Kue Yi ◽  
Hye Young Shin

This study was carried out to examine the effect of methanol extract of Oryza sativa L. (Dong-Jin in Korean, abbreviate as Os-DJ hereafter) on anaphylaxis. Os-DJ (10-5 to 1 g/kg) dose-dependently inhibited systemic anaphylaxis induced by compound 48/80 in rats. When Os-DJ was pretreated at concentration ranging from 10-5 to 1 g/kg, the serum histamine levels were reduced in a dose-dependent manner. Os-DJ (1 g/kg) also significantly inhibited local anaphylaxis activated by anti-dinitrophenyl (DNP) IgE. Moreover, Os-DJ dose-dependently inhibited the histamine release from rat peritoneal mast cells (RPMC) activated by compound 48/80 or anti-DNP IgE. These results indicate that Os-DJ possess anti anaphylactic activity by inhibition of histamine release from mast cells in vivo and in vitro.


2021 ◽  
Vol 11 ◽  
Author(s):  
Yeyu Zhang ◽  
Yuxing Zhu ◽  
Mengqing Xiao ◽  
Yaxin Cheng ◽  
Dong He ◽  
...  

Background: Increasing evidence indicates that long non-coding RNAs (lncRNAs) play crucial roles in cancer tumorigenesis and progression. TMPO antisense RNA 1 (TMPO-AS1) has been found to be involved in several cancers by acting as a competing endogenous RNA. However, the potential roles of TMPO-AS1 in bladder cancer (BC) and the potential interactions with proteins remain poorly understood.Methods: The expression of the lncRNA TMPO-AS1 was evaluated via bioinformatic analysis and further validated by quantitative real-time PCR (qRT-PCR). Loss- and gain-of-function assays were performed to determine the biological functions of TMPO-AS1 in BC cell proliferation, migration, and invasion. Moreover, chromatin immunoprecipitation, Western blotting, and fluorescence in situ hybridization, as well as RNA pull-down, RNA immunoprecipitation, and luciferase reporter assays, were conducted to explore the upstream and downstream molecules interacting with TMPO-AS1.Results: TMPO-AS1 is upregulated in BC. Functional experiments demonstrated that TMPO-AS1 promotes cell proliferation, migration, and invasion in BC and inhibits cell apoptosis in vivo and in vitro. Mechanically, E2F1 is responsible for TMPO-AS1 upregulation. Additionally, TMPO-AS1 facilitates the interaction of E2F1 with OTU domain-containing ubiquitin aldehyde binding 1 (OTUB1), leading to E2F1 deubiquitination and stabilization; therefore, TMPO-AS1 promotes BC malignant phenotypes. Furthermore, rescue experiments showed that TMPO-AS1 promotes BC growth in an E2F1-dependent manner.Conclusions: Our study is the first to uncover the novel TMPO-AS1/E2F1 positive regulatory loop important for the promotion of BC malignant behaviors. The TMPO-AS1/E2F1 loop should be considered in the quest for new BC therapeutic options.


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