Synthesis and characterization of trans-Pt(II)(salicylaldimine)(pyridine/pyridine-4-carbinol)Cl complexes: In vivo inhibition of E. coli growth and in vitro anticancer activities

Polyhedron ◽  
2015 ◽  
Vol 100 ◽  
pp. 264-270 ◽  
Author(s):  
Faiz-Ur Rahman ◽  
Amjad Ali ◽  
Inamullah Khan ◽  
Rong Guo ◽  
Lan Chen ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Anticancer Activities ◽  
E Coli ◽  
Coli Growth

Rapid, Refined, and Robust Method for Expression, Purification, and Characterization of Recombinant Human Amyloid-beta M1-42

2019 ◽  
Author(s):  
Priya Prakash ◽  
Travis Lantz ◽  
Krupal P. Jethava ◽  
Gaurav Chopra
Keyword(s):  
Amyloid Beta ◽  
Western Blots ◽  
Force Microscopy ◽  
E Coli ◽  
Atomic Force ◽  
Set Up ◽  
Short Time

Amyloid plaques found in the brains of Alzheimer’s disease (AD) patients primarily consists of amyloid beta 1-42 (Ab42). Commercially, Ab42 is synthetized using peptide synthesizers. We describe a robust methodology for expression of recombinant human Ab(M1-42) in Rosetta(DE3)pLysS and BL21(DE3)pLysS competent E. coli with refined and rapid analytical purification techniques. The peptide is isolated and purified from the transformed cells using an optimized set-up for reverse-phase HPLC protocol, using commonly available C18 columns, yielding high amounts of peptide (~15-20 mg per 1 L culture) in a short time. The recombinant Ab(M1-42) forms characteristic aggregates similar to synthetic Ab42 aggregates as verified by western blots and atomic force microscopy to warrant future biological use. Our rapid, refined, and robust technique to purify human Ab(M1-42) can be used to synthesize chemical probes for several downstream in vitro and in vivo assays to facilitate AD research.

scholarly journals Functional identification of ygiP as a positive regulator of the ttdA-ttdB-ygjE operon

Microbiology ◽  
2006 ◽  
Vol 152 (7) ◽  
pp. 2129-2135 ◽  
Author(s):  
Taku Oshima ◽  
Francis Biville
Keyword(s):  
Functional Characterization ◽  
Anaerobic Growth ◽  
Functional Identification ◽  
New Members ◽  
E Coli ◽  
Inner Membrane Protein ◽  
Tartrate Dehydratase

Functional characterization of unknown genes is currently a major task in biology. The search for gene function involves a combination of various in silico, in vitro and in vivo approaches. Available knowledge from the study of more than 21 LysR-type regulators in Escherichia coli has facilitated the classification of new members of the family. From sequence similarities and its location on the E. coli chromosome, it is suggested that ygiP encodes a lysR regulator controlling the expression of a neighbouring operon; this operon encodes the two subunits of tartrate dehydratase (TtdA, TtdB) and YgiE, an integral inner-membrane protein possibly involved in tartrate uptake. Expression of tartrate dehydratase, which converts tartrate to oxaloacetate, is required for anaerobic growth on glycerol as carbon source in the presence of tartrate. Here, it has been demonstrated that disruption of ygiP, ttdA or ygjE abolishes tartrate-dependent anaerobic growth on glycerol. It has also been shown that tartrate-dependent induction of the ttdA-ttdB-ygjE operon requires a functional YgiP.

Characterization of in vitro and in vivo murine models of human enteropathogenic E. coli (EPEC) infection

2003 ◽  
Vol 124 (4) ◽  
pp. A558
Author(s):  
Suzana D. Savkovic ◽  
Farol L. Tomson ◽  
Michelle Muza ◽  
Gail Hecht
Keyword(s):  
Murine Models ◽  
E Coli

scholarly journals Characterization of MazFSa, an Endoribonuclease from Staphylococcus aureus

2007 ◽  
Vol 189 (24) ◽  
pp. 8871-8879 ◽  
Author(s):  
Zhibiao Fu ◽  
Niles P. Donegan ◽  
Guido Memmi ◽  
Ambrose L. Cheung
Keyword(s):  
Staphylococcus Aureus ◽  
Environmental Stress Response ◽  
Binding Studies ◽  
Cell Growth Arrest ◽  
Consensus Sequences ◽  
E Coli ◽  
Endoribonuclease Activity

ABSTRACT The mazEF homologs of Staphylococcus aureus, designated mazEFsa , have been shown to cotranscribe with the sigB operon under stress conditions. In this study, we showed that MazEF Sa , as with their Escherichia coli counterparts, compose a toxin-antitoxin module wherein MazF Sa leads to rapid cell growth arrest and loss in viable CFU upon overexpression. MazF Sa is a novel sequence-specific endoribonuclease which cleaves mRNA to inhibit protein synthesis. Using ctpA mRNA as the model substrate both in vitro and in vivo, we demonstrated that MazF Sa cleaves single-strand RNA preferentially at the 5′ side of the first U or 3′ side of the second U residue within the consensus sequences VUUV′ (where V and V′ are A, C, or G and may or may not be identical). Binding studies confirmed that the antitoxin MazE Sa binds MazF Sa to form a complex to inhibit the endoribonuclease activity of MazF Sa . Contrary to the system in E. coli, exposure to selected antibiotics augmented mazEFsa transcription, akin to what one would anticipate from the environmental stress response of the sigB system. These data indicate that the mazEF system of S. aureus differs from the gram-negative counterparts with respect to mRNA cleavage specificity and antibiotic stresses.

Synthesis and characterization of novel PUFA esters exhibiting potential anticancer activities: An in vitro study

2011 ◽  
Vol 46 (10) ◽  
pp. 4878-4886 ◽  
Author(s):  
Azmat Ali Khan ◽  
Mahboob Alam ◽  
Saba Tufail ◽  
Jamal Mustafa ◽  
Mohammad Owais
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Synthesis And Characterization ◽  
Anticancer Activities

scholarly journals Synthesis and Characterization of 2-Pyrazoline Derivatives and their in silico and in vitro Studies on Antimicrobial and Anticancer Activities

2019 ◽  
Vol 31 (10) ◽  
pp. 2191-2196 ◽  
Author(s):  
S. Rathinamanivannan ◽  
K. Megha ◽  
Raja Chinnamanayakar ◽  
Ashok Kumar ◽  
M.R. Ezhilarasi
Keyword(s):  
Breast Cancer ◽  
Synthesis And Characterization ◽  
Anticancer Activities ◽  
1H And 13C Nmr ◽  
Chemical Structures ◽  
Ft Ir ◽  
Affinity Score ◽  
High Binding Affinity

The new series of 1-(4,5-dihydro-5-phenyl-3-diphenylpyrazol-1-yl)butan-1-one derivatives were synthesized by cyclization method using biphenyl chalcone with n-butyric acid and hydrazine hydrate. The synthesized 1-(4,5-dihydro-5-phenyl-3-diphenylpyrazol-1-yl)butan-1-one derivatives chemical structures were confirmed from spectral data such as FT-IR, 1H and 13C NMR. 2-Pyrazoline derivatives were docked with bacterial (1UAG) and breast cancer (1OQA) protein. Based on high binding affinity score, the best compound was subjected to in vitro anticancer activity by MTT assay. Also, antimicrobial activity were studied for synthesized 2-pyrazoline derivatives.

Synthesis and Characterization of Dual Radiolabeled Layered Double Hydroxide Nanoparticles for Use in In Vitro and In Vivo Nanotoxicology Studies

2009 ◽  
Vol 114 (2) ◽  
pp. 734-740 ◽  
Author(s):  
Anthony W. Musumeci ◽  
Tara L. Schiller ◽  
Zhi Ping Xu ◽  
Rodney F. Minchin ◽  
Darren J. Martin ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Synthesis And Characterization ◽  
Double Hydroxide ◽  
Layered Double Hydroxide Nanoparticles

Synthesis and characterization of two novel dicyanidoargentate(i) complexes containing N-(2-hydroxyethyl)ethylenediamine exhibiting significant biological activity

2014 ◽  
Vol 38 (10) ◽  
pp. 4760-4773 ◽  
Author(s):  
Nesrin Korkmaz ◽  
Ahmet Karadağ ◽  
Ali Aydın ◽  
Yusuf Yanar ◽  
İsa Karaman ◽  
...  
Keyword(s):  
Biological Activity ◽  
Synthesis And Characterization ◽  
Anticancer Activities

Two novel cyanido-complexes having very significant antibacterial, antifungal and anticancer activities in vitro were synthesized and characterized using various techniques.

Synthesis and characterization of surface‐modified PBLG nanoparticles for bone targeting: In vitro and in vivo evaluations

2011 ◽  
Vol 100 (11) ◽  
pp. 4877-4887 ◽  
Author(s):  
İpek Özcan ◽  
Kawthar Bouchemal ◽  
Freimar Segura‐Sánchez ◽  
Özgen Özer ◽  
Tamer Güneri ◽  
...  
Keyword(s):  
Synthesis And Characterization ◽  
Bone Targeting ◽  
Surface Modified
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