scholarly journals New developments and emerging trends in high-throughput screening methods for lead compound identification

2010 ◽  
pp. 141 ◽  
Author(s):  
James Noah
Keyword(s):  
High Throughput ◽  
High Throughput Screening ◽  
Screening Methods ◽  
Lead Compound ◽  
Compound Identification ◽  
New Developments ◽  
Emerging Trends

From Classical to High Throughput Screening Methods for Feruloyl Esterases: A Review

2016 ◽  
Vol 19 (8) ◽  
pp. 616-626 ◽  
Author(s):  
Lorena Ramírez-Velasco ◽  
Mariana Armendáriz-Ruiz ◽  
Jorge Alberto Rodríguez-González ◽  
Marcelo Müller-Santos ◽  
Ali Asaff-Torres ◽  
...  
Keyword(s):  
High Throughput ◽  
High Throughput Screening ◽  
Screening Methods ◽  
Feruloyl Esterases

scholarly journals Asymmetric synthesis of host-directed inhibitors of myxoviruses

2013 ◽  
Vol 9 ◽  
pp. 197-203 ◽  
Author(s):  
Terry W Moore ◽  
Kasinath Sana ◽  
Dan Yan ◽  
Pahk Thepchatri ◽  
John M Ndungu ◽  
...  
Keyword(s):  
Antiviral Activity ◽  
Asymmetric Synthesis ◽  
High Throughput ◽  
High Throughput Screening ◽  
Aqueous Solubility ◽  
Influenza Viruses ◽  
Lead Compound ◽  
Synthetic Strategy ◽  
Aqueous Solubilities ◽  
Nanomolar Range

High-throughput screening (HTS) previously identified benzimidazole 1 (JMN3-003) as a compound with broad antiviral activity against different influenza viruses and paramyxovirus strains. In pursuit of a lead compound from this series for development, we sought to increase both the potency and the aqueous solubility of 1. Lead optimization has achieved compounds with potent antiviral activity against a panel of myxovirus family members (EC50 values in the low nanomolar range) and much improved aqueous solubilities relative to that of 1. Additionally, we have devised a robust synthetic strategy for preparing 1 and congeners in an enantio-enriched fashion, which has allowed us to demonstrate that the (S)-enantiomers are generally 7- to 110-fold more potent than the corresponding (R)-isomers.

scholarly journals High throughput method development and optimised production of leaf protein concentrates with potential to support the agri-industry

2021 ◽  
Author(s):  
Ajay Iyer ◽  
Lisa Guerrier ◽  
Salomé Leveque ◽  
Charles S. Bestwick ◽  
Sylvia H. Duncan ◽  
...  
Keyword(s):  
Amino Acid ◽  
High Throughput ◽  
High Throughput Screening ◽  
Protein Extraction ◽  
Leaf Protein ◽  
Protein Recovery ◽  
Screening Methods ◽  
Extraction Technology ◽  
Protein Concentrates ◽  
Ethanol Precipitation

AbstractInvasive plants offer an interesting and unconventional source of protein and the considerable investment made towards their eradication can potentially be salvaged through their revalorisation. To identify viable sources, effective and high-throughput screening methods are required, as well as efficient procedures to isolate these components. Rigorous assessment of low-cost, high-throughput screening assays for total sugar, phenolics and protein was performed, and ninhydrin, Lever and Fast Blue assays were found to be most suitable owing to high reliability scores and false positive errors less than 1%. These assays were used to characterise invasive Scottish plants such as Gorse (Ulex europeans), Broom (Cystisus scoparius) and Fireweed (Chamaenerion angustifolium). Protein extraction (alkali-, heat- and enzyme assisted) were tested on these plants, and further purification (acid and ethanol precipitation, as well as ultrafiltration) procedures were tested on Gorse, based on protein recovery values. Cellulase treatment and ethanol precipitation gave the highest protein recovery (64.0 ± 0.5%) and purity (96.8 ± 0.1%) with Gorse. The amino acid profile of the purified protein revealed high levels of essential amino acids (34.8 ± 0.0%). Comparison of results with preceding literature revealed a strong association between amino acid profiles and overall protein recovery with the extraction method employed. The final purity of the protein concentrates was closely associated to the protein content of the initial plant mass. Leaf protein extraction technology can effectively raise crop harvest indices, revalorise underutilised plants and waste streams.

Evaluation of Methods To Assess the Biofilm-Forming Ability of Listeria monocytogenes

2012 ◽  
Vol 75 (8) ◽  
pp. 1411-1417 ◽  
Author(s):  
ANTÓNIO LOURENÇO ◽  
FRANCISCO REGO ◽  
LUISA BRITO ◽  
JOSEPH F. FRANK
Keyword(s):  
Stainless Steel ◽  
Listeria Monocytogenes ◽  
High Throughput ◽  
Biofilm Formation ◽  
High Throughput Screening ◽  
Screening Methods ◽  
Genetic Lineage ◽  
Production Lines ◽  
Genetic Characteristics

The contamination of ready-to-eat products with Listeria monocytogenes has been related to the presence of biofilms in production lines, as biofilms protect cells from chemical sanitizers. The ability of L. monocytogenes to produce biofilms is often evaluated using in vitro methodologies. This work aims to compare the most frequently used methodologies, including high-throughput screening methods based on microplates (crystal violet and the Calgary Biofilm Device) and methods based on CFU enumeration and microscopy after growth on stainless steel. Thirty isolates with diverse origins and genetic characteristics were evaluated. No (or low) correlations between methods were observed. The only significant correlation was found between the methods using stainless steel. No statistically significant correlation (P > 0.05) was detected among genetic lineage, serovar, and biofilm-forming ability. Because results indicate that biofilm formation is influenced by the surface material, the extrapolation of results from high-throughput methods using microplates to more industrially relevant surfaces should be undertaken with caution.

High-throughput Screening Methods Developed for Oxidoreductases

Enzyme Assays ◽  
2006 ◽  
pp. 77-93 ◽  
Author(s):  
Tyler W. Johannes ◽  
Ryan D. Woodyer ◽  
Huimin Zhao
Keyword(s):  
High Throughput ◽  
High Throughput Screening ◽  
Screening Methods

scholarly journals Paper-Based SERS Platform for One-Step Screening of Tetracycline in Milk

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ana Marques ◽  
Bruno Veigas ◽  
Andreia Araújo ◽  
Beatriz Pagará ◽  
Pedro Viana Baptista ◽  
...  
Keyword(s):  
High Throughput ◽  
High Throughput Screening ◽  
Point Of Care ◽  
Dairy Industry ◽  
Principal Component ◽  
Surface Enhanced Raman Spectroscopy ◽  
Economic Losses ◽  
Screening Methods ◽  
Sers Substrate ◽  
Molecular Signatures

AbstractThroughout the last decade, the expansion of food testing has been gradually moving towards ordinary high throughput screening methods performed on-site. The demand for point-of-care testing, able to distinguish molecular signatures with high accuracy, sensitivity and specificity has been significantly increasing. This new requirement relies on the on-site detection and monitorization of molecular signatures suitable for the surveillance of food production and processing. The widespread use of antibiotics has contributed to disease control of livestock but has also created problems for the dairy industry and consumers. Its therapeutic and subtherapeutic use has increased the risk of contamination in milk in enough concentrations to cause economic losses to the dairy industry and have a health impact in highly sensitive individuals. This study focuses on the development of a simple Surface-Enhanced Raman Spectroscopy (SERS) method for fast high throughput screening of tetracycline (TET) in milk. For this, we integrate a paper-based low-cost, fully recyclable and highly stable SERS platform, with a minimal sample preparation protocol. A two-microliter sample of milk solutions spiked with TET (from 0.01 to 1000 ppm) is dried on a silver nanoparticle coated cardboard substrate and measured via a Raman spectrophotometer. The SERS substrate showed to be extremely stable with a shelf life of several months. A global spectrum principal component analysis approach was used to test all the detected vibrational modes and their correlation with TET concentration. Peak intensity ratios (455 cm−1/1280 cm−1 and 874 cm−1/1397 cm−1) were found to be correlated with TET concentrations in milk, achieving a sensitivity as low as 0.1 ppm. Results indicate that this SERS method combined with portable Raman spectrometer is a potential tool that can be used on-site for the monitoring of TET residues and other antibiotics.

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