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Breast cancer (BC) is the second-leading cause of cancer after lung cancer. The disease has affected millions of people and resulted in many deaths. In the metastasis of breast cancer cells, Topoisomerase IIα plays a vital role. Therefore, this investigation aims to identify potential flavonoid compounds against BC by inhibiting this enzyme at an early stage. Based on previous studies, we selected and screened several plant-derived flavonoid compounds with potential anti-breast cancer activity using PyRx 0.8 and Schrodinger applications for preliminary molecular docking: the highest docking scores of Myricetin (-11.6 kcal/mol) and Quercetin (-10.0 kcal/mol). Next, we evaluated the top four compounds on the Way2Drug server to complete the cytotoxicity evaluation, which demonstrated anti-cancer and anti-breast cancer activity in various cell lines. According to pharmacokinetics studies, four compounds exhibited outstanding values and functioned similar to drug-like molecules. Moreover, Myricetin, Quercetin, and Morin displayed the highest number of hydrogen bonds, with the corresponding receptor forming residues asn120, thr147, and lys168. The protein-ligand complexes were validated using the Desmond simulator, and their data were compared to the anti-breast cancer drug Doxorubicin. In the simulation analysis, various parameters were evaluated, including RMSD, RMSF, Rg, SASA, MolSA, PSA, and hydrogen bond interaction. Finally, validated our dynamic simulation result with MM-GBSA operation, and Myricetin and Quercetin had the greatest score of -72.74344651, -66.66771823 kcal/mol, which is outstanding than the control drug. Hence, the computational research approach determined that Myricetin, Quercetin, and Morin could be industrially developed for the alternative treatment of breast cancer following additional confirmation from animal and cell line studies.
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Despite the progress made in the development of new antiepileptic drugs (AEDs), poor response to them is a rising concern in epilepsy treatment. Of several hypotheses explaining AED treatment failure, the most promising theory is the overexpression of multidrug transporters belonging to ATP-binding cassette (ABC) transporter family at blood-brain barrier. Previous data show that AEDs themselves can induce these transporters, in turn affecting their own brain bioavailability. Presently, this induction and the underlying regulatory mechanism involved at human blood-brain barrier is not well elucidated. Herein, we sought to explore the effect of most prescribed first- and second-line AEDs on multidrug transporters in human cerebral microvascular endothelial cells, hCMEC/D3. Our work demonstrated that exposure of these cells to valproic acid (VPA) induced mRNA, protein, and functional activity of breast cancer resistance protein (BCRP/ABCG2). On examining the substrate interaction status of AEDs with BCRP, VPA, phenytoin, and lamotrigine were found to be potential BCRP substrates. Furthermore, we observed that siRNA-mediated knockdown of peroxisome proliferator-activated receptor alpha (PPARα) or use of PPARα antagonist, resulted in attenuation of VPA-induced BCRP expression and transporter activity. VPA was found to increase PPARα expression and trigger its translocation from cytoplasm to nucleus. Findings from chromatin immunoprecipitation and luciferase assays showed that VPA enhances the binding of PPARα to its response element in the ABCG2 promoter, resulting in elevated ABCG2 transcriptional activity. Taken together, these in vitro findings highlight PPARα as the potential molecular target to prevent VPA-mediated BCRP induction, which may have important implications in VPA pharmacoresistance. SIGNIFICANCE STATEMENT: Induction of multidrug transporters at blood-brain barrier can largely affect the bioavailability of the substrate antiepileptic drugs in the brains of patients with epilepsy, thus affecting their therapeutic efficacy. The present study reports a mechanistic pathway of breast cancer resistance protein (BCRP/ABCG2) upregulation by valproic acid in human brain endothelial cells via peroxisome proliferator-activated receptor alpha involvement, thereby providing a potential strategy to prevent valproic acid pharmacoresistance in epilepsy.
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Neoplasias da Mama , Epilepsia , Humanos , Feminino , PPAR alfa/metabolismo , Ácido Valproico/farmacologia , Membro 2 da Subfamília G de Transportadores de Cassetes de Ligação de ATP/genética , Membro 2 da Subfamília G de Transportadores de Cassetes de Ligação de ATP/metabolismo , Anticonvulsivantes/farmacologia , Regulação para Cima , Células Endoteliais/metabolismo , Proteínas de Neoplasias/genética , Proteínas de Neoplasias/metabolismo , Encéfalo/metabolismo , Proteínas de Membrana Transportadoras/metabolismo , Transportadores de Cassetes de Ligação de ATP/genética , Transportadores de Cassetes de Ligação de ATP/metabolismo , Epilepsia/tratamento farmacológico , Epilepsia/metabolismo , Neoplasias da Mama/metabolismoRESUMO
AGAMOUS-Like 18 (AGL18) is a MADS domain transcription factor (TF) that is structurally related to AGL15. Here we show that, like AGL15, AGL18 can promote somatic embryogenesis (SE) when ectopically expressed in Arabidopsis (Arabidopsis thaliana). Based on loss-of-function mutants, AGL15 and AGL18 have redundant functions in developmental processes such as SE. To understand the nature of this redundancy, we undertook a number of studies to look at the interaction between these factors. We studied the genome-wide direct targets of AGL18 to characterize its roles at the molecular level using chromatin immunoprecipitation (ChIP)-SEQ combined with RNA-SEQ. The results demonstrated that AGL18 binds to thousands of sites in the genome. Comparison of ChIP-SEQ data for AGL15 and AGL18 revealed substantial numbers of genes bound by both AGL15 and AGL18, but there were also differences. Gene ontology analysis revealed that target genes were enriched for seed, embryo, and reproductive development as well as hormone and stress responses. The results also demonstrated that AGL15 and AGL18 interact in a complex regulatory loop, where AGL15 inhibited transcript accumulation of AGL18, while AGL18 increased AGL15 transcript accumulation. Co-immunoprecipitation revealed an interaction between AGL18 and AGL15 in somatic embryo tissue. The binding and expression analyses revealed a complex crosstalk and interactions among embryo TFs and their target genes. In addition, our study also revealed that phosphorylation of AGL18 and AGL15 was crucial for the promotion of SE.
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Arabidopsis/crescimento & desenvolvimento , Arabidopsis/genética , Proteínas de Domínio MADS/genética , Proteínas de Domínio MADS/metabolismo , Sementes/crescimento & desenvolvimento , Sementes/genética , Fatores de Transcrição/metabolismo , Regulação da Expressão Gênica de Plantas , Genes de Plantas , Variação Genética , Genótipo , Mutação , Técnicas de Embriogênese Somática de PlantasRESUMO
An operationally simple and efficient protocol for copper(II)-mediated, picolinamido-directed C8-H sulfonamidation of 1-naphthylamine derivatives with various sulfonamides has been developed. Remarkably, this cross-dehydrogenative C-H/H-N coupling reaction exhibits a broad substrate scope with excellent functional group tolerance, is scalable, and enables an expeditious route to a library of unsymmetrical N-arylated sulfonamides in good to excellent yields with exclusive site selectivity.
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Hepatitis C virus (HCV) infection is a major public health concern, and almost two million people are infected per year globally. This is occurred by the diverse spectrum of viral genotypes, which are directly associated with chronic liver disease (fibrosis, and cirrhosis). Indeed, the viral genome encodes three principal proteins as sequentially core, E1, and E2. Both E1 and E2 proteins play a crucial role in the attachment of the host system, but E2 plays a more fundamental role in attachment. The researchers have found the "E2-CD81 complex" at the entry site, and therefore, CD81 is the key receptor for HCV entrance in both humans, and chimpanzees. So, the researchers are trying to block the host CD81 receptor and halt the virus entry within the cellular system via plant-derived compounds. Perhaps that is why the current research protocol is designed to perform an in silico analysis of the flavonoid compounds for targeting the tetraspanin CD81 receptor of hepatocytes. To find out the best flavonoid compounds from our library, web-based tools (Swiss ADME, pKCSM), as well as computerized tools like the PyRx, PyMOL, BIOVIA Discovery Studio Visualizer, Ligplot+ V2.2, and YASARA were employed. For molecular docking studies, the flavonoid compounds docked with the targeted CD81 protein, and herein, the best-outperformed compounds are Taxifolin, Myricetin, Puerarin, Quercetin, and (-)-Epicatechin, and outstanding binding affinities are sequentially - 7.5, - 7.9, - 8.2, - 8.4, and - 8.5 kcal/mol, respectively. These compounds have possessed more interactions with the targeted protein. To validate the post docking data, we analyzed both 100 ns molecular dynamic simulation, and MM-PBSA via the YASARA simulator, and finally finds the more significant outcomes. It is concluded that in the future, these compounds may become one of the most important alternative antiviral agents in the fight against HCV infection. It is suggested that further in vivo, and in vitro research studies should be done to support the conclusions of this in silico research workflow.
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Hepacivirus , Hepatite C , Humanos , Hepacivirus/genética , Hepacivirus/metabolismo , Simulação de Acoplamento Molecular , Hepatite C/tratamento farmacológico , Hepatite C/genética , Hepatite C/metabolismo , Hepatócitos/metabolismo , Flavonoides/farmacologia , Flavonoides/metabolismo , Tetraspanina 28/genética , Tetraspanina 28/metabolismo , Tetraspanina 28/farmacologiaRESUMO
SARS-CoV-2 is the foremost culprit of the novel coronavirus disease 2019 (nCoV-19 and/or simply COVID-19) and poses a threat to the continued life of humans on the planet and create pandemic issue globally. The 3-chymotrypsin-like protease (MPRO or 3CLPRO) is the crucial protease enzyme of SARS-CoV-2, which directly involves the processing and release of translated non-structural proteins (nsps), and therefore involves the development of virus pathogenesis along with outbreak the forecasting of COVID-19 symptoms. Moreover, SARS-CoV-2 infections can be inhibited by plant-derived chemicals like amentoflavone derivatives, which could be used to develop an anti-COVID-19 drug. Our research study is designed to conduct an in silico analysis on derivatives of amentoflavone (isoginkgetin, putraflavone, 4''''''-methylamentoflavone, bilobetin, ginkgetin, sotetsuflavone, sequoiaflavone, heveaflavone, kayaflavone, and sciadopitysin) for targeting the non-structural protein of SARS-CoV-2, and subsequently further validate to confirm their antiviral ability. To conduct all the in silico experiments with the derivatives of amentoflavone against the MPRO protein, both computerized tools and online servers were applied; notably the software used is UCSF Chimera (version 1.14), PyRx, PyMoL, BIOVIA Discovery Studio tool (version 4.5), YASARA (dynamics simulator), and Cytoscape. Besides, as part of the online tools, the SwissDME and pKCSM were employed. The research study was proposed to implement molecular docking investigations utilizing compounds that were found to be effective against the viral primary protease (MPRO). MPRO protein interacted strongly with 10 amentoflavone derivatives. Every time, amentoflavone compounds outperformed the FDA-approved antiviral medicine that is currently underused in COVID-19 in terms of binding affinity (- 8.9, - 9.4, - 9.7, - 9.1, - 9.3, - 9.0, - 9.7, - 9.3, - 8.8, and - 9.0 kcal/mol, respectively). The best-selected derivatives of amentoflavone also possessed potential results in 100 ns molecular dynamic simulation (MDS) validation. It is conceivable that based on our in silico research these selected amentoflavone derivatives more precisely 4''''''-methylamentoflavone, ginkgetin, and sequoiaflavone have potential for serving as promising lead drugs against SARS-CoV-2 infection. In consequence, it is recommended that additional in vitro as well as in vivo research studies have to be conducted to support the conclusions of this current research study.
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COVID-19 , SARS-CoV-2 , Humanos , SARS-CoV-2/metabolismo , Simulação de Acoplamento Molecular , Simulação de Dinâmica Molecular , Farmacologia em Rede , Inibidores de Proteases/química , Proteínas não Estruturais Virais , Antivirais/química , Peptídeo Hidrolases/metabolismoRESUMO
Globally, prostate cancer (PCa) is regarded as a challenging health issue, and the number of PCa patients continues to rise despite the availability of effective treatments in recent decades. The current therapy with chemotherapeutic drugs has been largely ineffective due to multidrug resistance and the conventional treatment has restricted drug accessibility to malignant tissues, necessitating a higher dosage resulting in increased cytotoxicity. Plant-derived bioactive compounds have recently attracted a great deal of attention in the field of PCa treatment due to their potent effects on several molecular targets and synergistic effects with anti-PCa drugs. This review emphasizes the molecular mechanism of phytochemicals on PCa cells, the synergistic effects of compound-drug interactions, and stem cell targeting for PCa treatment. Some potential compounds, such as curcumin, phenethyl-isothiocyanate, fisetin, baicalein, berberine, lutein, and many others, exert an anti-PCa effect via inhibiting proliferation, metastasis, cell cycle progression, and normal apoptosis pathways. In addition, multiple studies have demonstrated that the isolated natural compounds: d-limonene, paeonol, lanreotide, artesunate, and bicalutamide have potential synergistic effects. Further, a significant number of natural compounds effectively target PCa stem cells. However, further high-quality studies are needed to firmly establish the clinical efficacy of these phytochemicals against PCa.
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Berberina , Curcumina , Neoplasias da Próstata , Masculino , Humanos , Neoplasias da Próstata/metabolismo , Curcumina/farmacologia , Curcumina/uso terapêutico , Compostos Fitoquímicos/farmacologia , Compostos Fitoquímicos/uso terapêutico , Berberina/uso terapêutico , Linhagem Celular TumoralRESUMO
The adenosine triphosphate (ATP)-binding cassette efflux transporter G2 (ABCG2) was originally discovered in a multidrug-resistant breast cancer cell line. Studies in the past have expanded the understanding of its role in physiology, disease pathology and drug resistance. With a widely distributed expression across different cell types, ABCG2 plays a central role in ATP-dependent efflux of a vast range of endogenous and exogenous molecules, thereby maintaining cellular homeostasis and providing tissue protection against xenobiotic insults. However, ABCG2 expression is subjected to alterations under various pathophysiological conditions such as inflammation, infection, tissue injury, disease pathology and in response to xenobiotics and endobiotics. These changes may interfere with the bioavailability of therapeutic substrate drugs conferring drug resistance and in certain cases worsen the pathophysiological state aggravating its severity. Considering the crucial role of ABCG2 in normal physiology, therapeutic interventions directly targeting the transporter function may produce serious side effects. Therefore, modulation of transporter regulation instead of inhibiting the transporter itself will allow subtle changes in ABCG2 activity. This requires a thorough comprehension of diverse factors and complex signaling pathways (Kinases, Wnt/ß-catenin, Sonic hedgehog) operating at multiple regulatory levels dictating ABCG2 expression and activity. This review features a background on the physiological role of transporter, factors that modulate ABCG2 levels and highlights various signaling pathways, molecular mechanisms and genetic polymorphisms in ABCG2 regulation. This understanding will aid in identifying potential molecular targets for therapeutic interventions to overcome ABCG2-mediated multidrug resistance (MDR) and to manage ABCG2-related pathophysiology.
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Membro 2 da Subfamília G de Transportadores de Cassetes de Ligação de ATP/genética , Resistência a Múltiplos Medicamentos/genética , Resistencia a Medicamentos Antineoplásicos/genética , Animais , Humanos , Proteínas de Neoplasias/genética , Polimorfismo Genético/genética , Transdução de Sinais/genéticaRESUMO
AGAMOUS-like 15 (AGL15) is a member of the MADS-domain transcription factor (TF) family. MADS proteins are named for a conserved domain that was originally from an acronym derived from genes expressed in a variety of eukaryotes (MCM1-AGAMOUS-DEFICIENS-SERUM RESPONSE FACTOR). In plants, this family has expanded greatly, with more than one-hundred members generally found in dicots, and the proteins encoded by these genes have often been associated with developmental identity. AGL15 transcript and protein accumulate primarily in embryos and has been found to promote an important process called plant regeneration via somatic embryogenesis (SE). To understand how this TF performs this function, we have previously used microarray technologies to assess direct and indirect responsive targets of this TF. We have now revisited this question using next generation sequencing (NGS) to both characterize in vivo binding sites for AGL15 as well as response to the accumulation of AGL15. We compared these data to the prior microarray results to evaluate the different platforms. The new NGS data brought to light an interaction with brassinosteroid (BR) hormone signaling that was "missed" in prior Gene Ontology analysis from the microarray studies.
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Proteínas de Arabidopsis , Arabidopsis , Arabidopsis/genética , Arabidopsis/metabolismo , Proteínas de Domínio MADS/metabolismo , Sequenciamento de Nucleotídeos em Larga Escala , Proteínas de Arabidopsis/metabolismo , Plantas/metabolismo , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Regulação da Expressão Gênica de PlantasRESUMO
APETALA2/ETHYLENE RESPONSE FACTOR (AP2/ERF) gene clusters regulate the biosynthesis of diverse specialized metabolites, including steroidal glycoalkaloids in tomato (Solanum lycopersicum) and potato (Solanum tuberosum), nicotine in tobacco (Nicotiana tabacum), and pharmaceutically valuable terpenoid indole alkaloids in Madagascar periwinkle (Catharanthus roseus). However, the regulatory relationships between individual AP2/ERF genes within the cluster remain unexplored. We uncovered intracluster regulation of the C. roseus AP2/ERF regulatory circuit, which consists of ORCA3, ORCA4, and ORCA5 ORCA3 and ORCA5 activate ORCA4 by directly binding to a GC-rich motif in the ORCA4 promoter. ORCA5 regulates its own expression through a positive autoregulatory loop and indirectly activates ORCA3 In determining the functional conservation of AP2/ERF clusters in other plant species, we found that GC-rich motifs are present in the promoters of analogous AP2/ERF clusters in tobacco, tomato, and potato. Intracluster regulation is evident within the tobacco NICOTINE2 (NIC2) ERF cluster. Moreover, overexpression of ORCA5 in tobacco and of NIC2 ERF189 in C. roseus hairy roots activates nicotine and terpenoid indole alkaloid pathway genes, respectively, suggesting that the AP2/ERFs are functionally equivalent and are likely to be interchangeable. Elucidation of the intracluster and mutual regulation of transcription factor gene clusters advances our understanding of the underlying molecular mechanism governing regulatory gene clusters in plants.
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Etilenos/metabolismo , Proteínas de Homeodomínio/metabolismo , Proteínas de Plantas/metabolismo , Alcaloides de Triptamina e Secologanina/metabolismo , Fatores de Transcrição/metabolismo , Acetatos/metabolismo , Acetatos/farmacologia , Fatores de Transcrição de Zíper de Leucina e Hélice-Alça-Hélix Básicos/genética , Fatores de Transcrição de Zíper de Leucina e Hélice-Alça-Hélix Básicos/metabolismo , Catharanthus/genética , Núcleo Celular/metabolismo , Ciclopentanos/metabolismo , Ciclopentanos/farmacologia , Etilenos/farmacologia , Expressão Gênica , Regulação da Expressão Gênica de Plantas/genética , Regulação da Expressão Gênica de Plantas/fisiologia , Proteínas de Homeodomínio/genética , Solanum lycopersicum/genética , Família Multigênica/genética , Família Multigênica/fisiologia , Motivos de Nucleotídeos/genética , Oxilipinas/metabolismo , Oxilipinas/farmacologia , Filogenia , Reguladores de Crescimento de Plantas/metabolismo , Proteínas de Plantas/genética , Plantas Geneticamente Modificadas/metabolismo , Regiões Promotoras Genéticas , Ligação Proteica/genética , Ligação Proteica/fisiologia , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo , Solanum tuberosum/genética , Nicotiana/genética , Fatores de Transcrição/genética , Ativação Transcricional/genética , Regulação para CimaRESUMO
Seeds are essential for human civilization, so understanding the molecular events underpinning seed development and the zygotic embryo it contains is important. In addition, the approach of somatic embryogenesis is a critical propagation and regeneration strategy to increase desirable genotypes, to develop new genetically modified plants to meet agricultural challenges, and at a basic science level, to test gene function. We briefly review some of the transcription factors (TFs) involved in establishing primary and apical meristems during zygotic embryogenesis, as well as TFs necessary and/or sufficient to drive somatic embryo programs. We focus on the model plant Arabidopsis for which many tools are available, and review as well as speculate about comparisons and contrasts between zygotic and somatic embryo processes.
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Proteínas de Arabidopsis/metabolismo , Arabidopsis/embriologia , Sementes/embriologia , Arabidopsis/genética , Proteínas de Arabidopsis/genética , Sementes/genéticaRESUMO
Plants synthesize a vast array of specialized metabolites that primarily contribute to their defense and survival under adverse conditions. Many of the specialized metabolites have therapeutic values as drugs. Biosynthesis of specialized metabolites is affected by environmental factors including light, temperature, drought, salinity, and nutrients, as well as pathogens and insects. These environmental factors trigger a myriad of changes in gene expression at the transcriptional and posttranscriptional levels. The dynamic changes in gene expression are mediated by several regulatory proteins that perceive and transduce the signals, leading to up- or down-regulation of the metabolic pathways. Exploring the environmental effects and related signal cascades is a strategy in metabolic engineering to produce valuable specialized metabolites. However, mechanistic studies on environmental factors affecting specialized metabolism are limited. The medicinal plant Catharanthus roseus (Madagascar periwinkle) is an important source of bioactive terpenoid indole alkaloids (TIAs), including the anticancer therapeutics vinblastine and vincristine. The emerging picture shows that various environmental factors significantly alter TIA accumulation by affecting the expression of regulatory and enzyme-encoding genes in the pathway. Compared to our understanding of the TIA pathway in response to the phytohormone jasmonate, the impacts of environmental factors on TIA biosynthesis are insufficiently studied and discussed. This review thus focuses on these aspects and discusses possible strategies for metabolic engineering of TIA biosynthesis. PURPOSE OF WORK: Catharanthus roseus is a rich source of bioactive terpenoid indole alkaloids (TIAs). The objective of this work is to present a comprehensive account of the influence of various biotic and abiotic factors on TIA biosynthesis and to discuss possible strategies to enhance TIA production through metabolic engineering.
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Catharanthus/metabolismo , Engenharia Metabólica/métodos , Alcaloides de Triptamina e Secologanina/metabolismo , Vias Biossintéticas/genética , Catharanthus/genética , Regulação da Expressão Gênica de Plantas/genética , Plantas Medicinais/genética , Plantas Medicinais/metabolismoRESUMO
Valproic acid (VPA) is a well-established anticonvulsant drug discovered serendipitously and marketed for the treatment of epilepsy, migraine, bipolar disorder and neuropathic pain. Apart from this, VPA has potential therapeutic applications in other central nervous system (CNS) disorders and in various cancer types. Since the discovery of its anticonvulsant activity, substantial efforts have been made to develop structural analogues and derivatives in an attempt to increase potency and decrease adverse side effects, the most significant being teratogenicity and hepatotoxicity. Most of these compounds have shown reduced toxicity with improved potency. The simple structure of VPA offers a great advantage to its modification. This review briefly discusses the pharmacology and molecular targets of VPA. The article then elaborates on the structural modifications in VPA including amide-derivatives, acid and cyclic analogues, urea derivatives and pro-drugs, and compares their pharmacological profile with that of the parent molecule. The current challenges for the clinical use of these derivatives are also discussed. The review is expected to provide necessary knowledgebase for the further development of VPA-derived compounds.
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Estrutura Molecular , Ácido Valproico/química , Ácido Valproico/farmacologia , Amidas/química , Amidas/farmacologia , Animais , Anticonvulsivantes/administração & dosagem , Anticonvulsivantes/química , Anticonvulsivantes/farmacologia , Monitoramento de Medicamentos , Epilepsia/tratamento farmacológico , Humanos , Relação Estrutura-Atividade , Teratogênicos/química , Teratogênicos/farmacologia , Ureia/análogos & derivados , Ureia/química , Ureia/farmacologia , Ácido Valproico/administração & dosagem , Ácido Valproico/análogos & derivadosRESUMO
Catharanthus roseus produces bioactive terpenoid indole alkaloids (TIAs), including the chemotherapeutics, vincristine and vinblastine. Transcriptional regulation of TIA biosynthesis is not fully understood. The jasmonic acid (JA)-responsive AP2/ERF transcription factor (TF), ORCA3, and its regulator, CrMYC2, play key roles in TIA biosynthesis. ORCA3 forms a physical cluster with two uncharacterized AP2/ERFs, ORCA4 and 5. Here, we report that (1) the ORCA gene cluster is differentially regulated; (2) ORCA4, while overlapping functionally with ORCA3, modulates an additional set of TIA genes. Unlike ORCA3, ORCA4 overexpression resulted in dramatic increase of TIA accumulation in C. roseus hairy roots. In addition, CrMYC2 is capable of activating ORCA3 and co-regulating TIA pathway genes concomitantly with ORCA3. The ORCA gene cluster and CrMYC2 act downstream of a MAP kinase cascade that includes a previously uncharacterized MAP kinase kinase, CrMAPKK1. Overexpression of CrMAPKK1 in C. roseus hairy roots upregulated TIA pathways genes and increased TIA accumulation. This work provides detailed characterization of a TF gene cluster and advances our understanding of the transcriptional and post-translational regulatory mechanisms that govern TIA biosynthesis in C. roseus.
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Catharanthus/enzimologia , Catharanthus/genética , Regulação da Expressão Gênica de Plantas , Sistema de Sinalização das MAP Quinases/genética , Família Multigênica , Proteínas de Plantas/genética , Alcaloides de Triptamina e Secologanina/metabolismo , Fatores de Transcrição/genética , Acetatos/farmacologia , Motivos de Aminoácidos , Catharanthus/efeitos dos fármacos , Núcleo Celular/efeitos dos fármacos , Núcleo Celular/metabolismo , Ciclopentanos/farmacologia , Regulação da Expressão Gênica de Plantas/efeitos dos fármacos , Genes de Plantas , Sistema de Sinalização das MAP Quinases/efeitos dos fármacos , Metaboloma/genética , Modelos Biológicos , Oxilipinas/farmacologia , Fosforilação/efeitos dos fármacos , Células Vegetais/efeitos dos fármacos , Células Vegetais/metabolismo , Proteínas de Plantas/química , Proteínas de Plantas/metabolismo , Raízes de Plantas/efeitos dos fármacos , Raízes de Plantas/genética , Regiões Promotoras Genéticas , Ligação Proteica/efeitos dos fármacos , Transporte Proteico/efeitos dos fármacos , Relação Estrutura-Atividade , Fatores de Transcrição/química , Fatores de Transcrição/metabolismo , Ativação Transcricional/efeitos dos fármacos , Ativação Transcricional/genéticaRESUMO
There are numerous medical and dental disorders for which there are no effective traditional therapy options. For various medical and dental disorders, botulinum toxin (BT) can be employed as an alternate therapeutic option that uses the chemodenervation approach. The range of dentistry treatment choices is expanding quickly. Applications of non-traditional therapy alternatives, such as the use of BT, are becoming more and more common in this situation. Although BT has been shown to be effective in a number of circumstances, its application in esthetic operations, such as the treatment of facial wrinkles, has gained widespread acceptance. This research is especially interested in applications of BT related to dentistry in the craniofacial region. For many diseases that a dentist would be interested in treating, BT provides a temporary, reversible, and generally safe therapy option. Due to their extensive knowledge of the anatomy of the faciomaxillary region, dental surgeons are a potential pool of operators who, with a small amount of skill enhancement, can use BT in their toolkit. This broadens the scope of minimally invasive alternatives to invasive protocols or refractory conditions. An online search was conducted for the use of BT in dentistry; all studies and articles pertaining to the subject were chosen, and dental-related content was removed and summarized. The fundamentals of BT and some of its applications in dentistry are covered in this article. The comprehensive details of its application in dentistry will be covered in the upcoming sections.
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The side effects of an antipsychotic drug, such as fibrous overgrowth and gingival inflammation, or a combination of both, can lead to gingival enlargement. Causes for developing plaque include neglected cleanliness, architectural differences disturbing contact, faulty restorative buildup, cavities, and orthodontic appliances. Hence, in actual clinical scenarios, finding out the exact reason with precision is the key to appropriate therapeutic intervention. The presented clinical case is about a 29-year-old female patient who was referred to the Department of Periodontics due to a swollen gums complaint. The drug administration was first done, with the second step constituting surgical reduction of excessive gingival tissue under local anesthesia using gingivectomy. After the surgery, an application of GC Coe-Pack (GC America Inc., USA) was made that acted as a dressing for the tissue and promoted healing. Follow-up was done to assess the patient's gingival and periodontal conditions as requested through recall. In the post-procedure circumstances following that, the ideal gingival height was reached. All the results were healthy in the given case presentation with no remaining supra bony pockets, achieving natural-looking gingival architecture, thus enhancing esthetics and decreasing plaque accumulation. The interventions of surgical gingivectomy can be deemed effective in this case.
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In dentistry, over-retained deciduous teeth pose a distinct issue due to their endurance during the expected exfoliation period. This case study describes a clinical situation with a male patient who is seven years old and complaining of painful swelling over the maxillary anterior region of the jaw and clinically showing dark red-colored, firm, non-tender, purulent swelling extending from alveolar mucosa of the upper anterior to the gingival margin of the 51, 52, 53 region. The treatment plan includes the extraction of the primary teeth. This case report also highlights the importance of minimal surgical intervention for treating peri-radicular cysts to minimize healing time and damage to the underlying developing permanent tooth.
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Introduction Orthodontic diagnosis and treatment planning encounter distinctive complexities when dealing with cleft lip and palate anomalies. This research endeavors to thoroughly examine skeletal and dental characteristics through cephalometric analyses among individuals with bilateral cleft lip and palate (BCLP) within the central Indian population. Due to anatomical variations and growth constraints, traditional cephalometric mean values derived from standard population studies are often inadequate for these cases. Advanced technology, such as NemoCeph (Nemotech, Madrid, Spain) software, enhances measurement accuracy. Methods Fifty patients, including 25 with BCLP and 25 without BCLP, aged 10 to 18, were selected for this cross-sectional study. Lateral cephalograms were traced and analyzed using NemoCeph software. Skeletal and dental parameters were measured, and a comparison was made between BCLP patients and the general population. Statistical analysis was conducted using the Student's unpaired t-test. Both SPSS Statistics Version 24.0 (IBM Corp., Armonk, NY, USA) and GraphPad Prism Version 7.0 (GraphPad Software, San Diego, CA, USA) were used for data analysis. Results The investigation revealed significant disparities across several parameters, including sella-nasion-A point angle (SNA), sella-nasion-B point angle (SNB), A point-nasion-B point angle (ANB), the inter-incisal angle (the angle between the long axes of the upper and lower incisors), and UP 1 to A-pog (a specific vertical measurement between anatomical markers labeled "upper 1" and "A point to pogonion"), with associated p-values for the skeletal and dental parameters of 0.310, 0.259, 0.195, 0.0001, and 0.0001, respectively. A comparison between manual tracing and digital methods indicated a reduction in errors and an improvement in measurement precision. Notably, patients diagnosed with BCLP exhibited distinctive skeletal and dental traits, highlighting the necessity for tailored treatment approaches. Conclusion This study emphasizes the importance of personalized cephalometric evaluations for patients with BCLP. Standard mean values may not be applicable due to unique anatomical considerations in these cases. Advanced technology and patient-specific assessments are crucial for accurate diagnosis, treatment planning, and orthognathic procedures in individuals with cleft lip and palate conditions. Embracing digital tools and tailored approaches can enhance patient care quality and lead to better clinical outcomes.
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The frenum, a fold of mucous membrane, connects the lip and cheek to the alveolar mucosa, gingiva, and underlying periosteum. When the frenum is positioned excessively near the gingival margin, it has the potential to compromise gingival health, impeding plaque control efforts and inducing muscular stress. A frenectomy is a commonly employed corrective measure for anomalous frenum attachments. In a recent clinical case, a 21-year-old female patient was referred from the Department of Orthodontics to the Department of Periodontics due to a papillary-type aberrant labial frenum attachment and excessive gingival tissue surrounding the upper right and left central incisors. The patient underwent a frenectomy, gingivectomy, and gingivoplasty procedures under local anesthesia to address the abnormal frenum attachment and gingival overgrowth using a scalpel. This approach has been demonstrated to yield optimal outcomes in orthodontic therapy for patients exhibiting elevated frenum attachment and gingival overgrowth. Following the achievement of hemostasis, a periodontal pack was applied to facilitate healing and preserve the soft tissue.
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Quercetin is a natural flavonoid with various pharmacological actions such as anti-inflammatory, antioxidant, antimicrobial, anticancer, antiviral, antidiabetic, cardioprotective, neuroprotective, and antiviral activities. Looking at these enormous potentials, researchers have explored how they can be used to manage numerous cancers. It's been studied for cancer management due to its anti-angiogenesis, anti-metastatic, and antiproliferative mechanisms. Despite having these proven pharmacological activities, the clinical use of quercetin is limited due to its first-- pass metabolism, poor solubility, and bioavailability. To address these shortcomings, researchers have fabricated various nanocarriers-based formulations to fight cancer. The present review overshadows the pharmacological potential, mechanisms, and application of nanoformulations against different cancers. Teaser: Explore the potential of Quercetin, a natural flavonoid with diverse pharmacological activities, and its nanoformulations in managing various cancers.