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Lysionotin

$43

  • Brand : BIOFRON

  • Catalogue Number : BF-L2005

  • Specification : 98%

  • CAS number : 152743-19-6

  • Formula : C18H16O7

  • Molecular Weight : 344.317

  • PUBCHEM ID : 160921

  • Volume : 20mg

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Catalogue Number

BF-L2005

Analysis Method

HPLC,NMR,MS

Specification

98%

Storage

2-8°C

Molecular Weight

344.317

Appearance

Yellow needle crystal

Botanical Source

Chlorophytum

Structure Type

Flavonoids

Category

Standards;Natural Pytochemical;API

SMILES

COC1=CC=C(C=C1)C2=CC(=O)C3=C(C(=C(C(=C3O2)OC)O)OC)O

Synonyms

shidiaolanjiasu/Nebadensin/4H-1-Benzopyran-4-one, 5,7-dihydroxy-6,8-dimethoxy-2-(4-methoxyphenyl)-/5,7-Dihydroxy-6,8-dimethoxy-2-(4-methoxyphenyl)-4H-1-benzopyran-4-one/5,7-Dihydroxy-6,8-dimethoxy-2-(4-methoxyphenyl)-4H-chromen-4-one

IUPAC Name

5,7-dihydroxy-6,8-dimethoxy-2-(4-methoxyphenyl)chromen-4-one

Density

1.4±0.1 g/cm3

Solubility

Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.

Flash Point

227.0±25.0 °C

Boiling Point

615.0±55.0 °C at 760 mmHg

Melting Point

InChl

InChI=1S/C18H16O7/c1-22-10-6-4-9(5-7-10)12-8-11(19)13-14(20)17(23-2)15(21)18(24-3)16(13)25-12/h4-8,20-21H,1-3H3

InChl Key

KRFBMPVGAYGGJE-UHFFFAOYSA-N

WGK Germany

RID/ADR

HS Code Reference

2938900000

Personal Projective Equipment

Correct Usage

For Reference Standard and R&D, Not for Human Use Directly.

Meta Tag

provides coniferyl ferulate(CAS#:152743-19-6) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate

PMID

30766614

Abstract

Tumor-associated macrophages (TAMs) with M2 phenotype play an essential role in tumor microenvironment (TME) during the progression and development of numerous cancers and associated with poor prognosis. Thus, regulation of TAMs polarization emerged as a new strategy for tumor immune therapy. According to Traditional Chinese Medicine (TCM) theory, herbs with Qi-tonifying character are involved in improving the defense capacity of immune system. In this study, we screened extracts and ingredients from five Qi-tonifying herbs exhibiting an inhibitory effect on M2 polarization of murine macrophages RAW264.7 induced by IL-4 and IL-13. Among these candidates, total flavonoids from Glycyrrhiza Radix et Rhizoma (TFRG) and ethanol extract of Ginseng Radix et Rhizoma significantly inhibited the expression of Arginase-1 (Arg-1) (above 90% at 100μg/mL), one of the phenotype markers of M2 macrophages. The inhibition of total saponins of Ginseng Radix et Rhizoma, ethanol extract of Cordyceps, ethanol extract of Acanthopanacis senticosi Radix et Rhizoma Seu caulis, and ethanol extract of Astragali Radix reached above 50% at 100μg/mL. The inhibition of ingredients including glabridin, isoliquiritin apioside, lysionotin, cordycepin, astragaloside IV, and calycosin reached above 50% at 50μM. Then, we investigated the molecular mechanisms of TFRG. TFRG abolished the migration of murine breast cancer 4T1 stimulated by the conditioned medium from M2 macrophages (M2-CM). In addition to Arg-1, TFRG also antagonized the IL-4/13-mediated mRNA upregulation of the M2 markers including found in inflammatory zone 1 (FIZZ1), chitinase-3-like protein 3 (YM1), and mannose receptor (CD206) and upregulated the expression of inducible nitric oxide synthase (iNOS), one of the M1 markers. The further exploration showed that TFRG decreased the phosphorylation of STAT6 and increased the expression of miR-155. Our study provides a series of potential immune regulating natural products from five Qi-tonifying herbs on M2 phenotype. For instance, TFRG suppressed M2 polarization of macrophages partly by inactivating STAT6 pathway and enhanced the level of miR-155 to regulate the expressions of M1 and M2 markers.

Title

Screening Five Qi-Tonifying Herbs on M2 Phenotype Macrophages

Author

Yi-Xin Jiang, 1 Yan Chen, 2 Yue Yang, 1 Xiao-Xia Chen, 2 and Dan-Dan Zhang 1

Publish date

2019 Jan 15.

PMID

31001485

Abstract

Antimicrobial resistance constitutes one of the major challenges facing humanity in the Twenty-First century. The spread of resistant pathogens has been such that the possibility of returning to a pre-antibiotic era is real. In this scenario, innovative therapeutic strategies must be employed to restrict resistance. Among the innovative proposed strategies, anti-virulence therapy has been envisioned as a promising alternative for effective control of the emergence and spread of resistant pathogens. This review presents some of the anti-virulence strategies that are currently being developed, it will cover strategies focused on quench pathogen quorum sensing (QS) systems, disassemble of bacterial functional membrane microdomains (FMMs), disruption of biofilm formation and bacterial toxin neutralization.

KEYWORDS

anti-virulence therapy, antibiotic resistance, bacterial membrane microdomains, quorum sensing, biofilms, bacterial toxins

Title

Recent Advances in Anti-virulence Therapeutic Strategies With a Focus on Dismantling Bacterial Membrane Microdomains, Toxin Neutralization, Quorum-Sensing Interference and Biofilm Inhibition

Author

Osmel Fleitas Martinez,1,2 Marlon Henrique Cardoso,1,2,3 Suzana Meira Ribeiro,4 and Octavio Luiz Franco1,2,3,*

Publish date

2019 Apr 2

PMID

31357964

Abstract

Background
The Atlantic Forest biome extends along the entire Brazilian coast and is home to approximately 20,000 plant species, many of which are endemic; it is considered one of the hotspot regions of the planet. Several of these species are sources of natural products with biological activities that are still unknown. In this study, we evaluated the antimicrobial activity of 90 extracts derived from native Atlantic Forest tree species against Staphylococcus aureus, an important human and veterinary pathogen.

Methods
Extracts from native Atlantic Forest tree species were evaluated for their antimicrobial activity against S. aureus by in vitro standard methods. Phytochemical fractionation of the extract from Maclura tinctoria was performed by liquid-liquid partitioning. LC-DAD-ESI-MS was used for identification of constituents in the most active fraction. Damage of cells and alterations in the permeability of cell membrane were determined by atomic force microscopy (AFM) and crystal violet uptake assay, respectively. In vivo antimicrobial activity was evaluated using Galleria mellonella larvae infected with S. aureus with survival data collected using the Kaplan-Meier method.

Results
Among the organic or aqueous extracts tested here, 26 showed biological activity. Eight species showed relevant results, with a minimum inhibitory concentration (MIC) below 1 mg/mL. Antibacterial activity was registered for three species for the first time. An organic extract from Maclura tinctoria leaves showed the lowest MIC (0.08 mg/mL). Fractionation of this extract by liquid-liquid partitioning led to obtaining fraction 11FO d with a MIC of 0.04 mg/mL. This fraction showed strong activity against veterinary S. aureus isolates and contributed to the increased survival of Galleria mellonella larvae infected with S. aureus ATCC 29213. The bacterial surface was not altered by the presence of 11FO d, and no cell membrane damage was detected. The LC-DAD-ESI/MS analyses identified prenylated flavonoids as the major constituents responsible for the antibacterial activity of this active extract.

Conclusion
A fraction enriched in prenylated isoflavones and flavanones from M. tinctoria showed in vitro and in vivo efficacy as antistaphylococcal agents. These findings justify the need for further research to elucidate the mechanisms of action of these compounds.

KEYWORDS

Maclura tinctoria, Prenylated flavonoids, Antibacterial, Galleria mellonella

Title

Prenylated flavonoid-enriched fraction from Maclura tinctoria shows biological activity against Staphylococcus aureus and protects Galleria mellonella larvae from bacterial infection

Author

Ayla das Chagas Almeida,1 Lais Azevedo Rodrigues,1 Graziela dos Santos Paulino,1 Ananda Pereira Aguilar,1 Alisson Andrade Almeida,1 Sukarno Olavo Ferreira,2 Geraldo Celio Brandão,3 João Paulo Viana Leite,1 and Andrea de Oliveira Barros Riboncorresponding author1

Publish date

2019 Jul 29.


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