Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

On page 3811, M. Mrksich and co-workers culture cells using self-assembled monolayers presenting cell adhesion ligands and enzyme substrates. A lysis buffer disrupts the cell membranes, releasing enzymes that modify the immobilized substrates. These modifications can be measured with SAMDI mass spectrometry, giving a high-throughput, cell-based assay.

Download full-text PDF

Source
http://dx.doi.org/10.1002/smll.201670138DOI Listing

Publication Analysis

Top Keywords

measured samdi
8
samdi mass
8
mass spectrometry
8
cell-based screening
4
screening cellular
4
cellular assays
4
assays molecular
4
molecular endpoint
4
endpoint measured
4
spectrometry small
4

Similar Publications

Polymerase β (POLB), with dual functionality as a lyase and polymerase, plays a critical role in the base excision repair (BER) pathway to maintain genomic stability. POLB knockout and rescue studies in BRCA1/2-mutant cancer cell lines revealed that inhibition of lyase and polymerase activity is required for the synthetic lethal interaction observed with PARP inhibitors, highlighting POLB as a valuable therapeutic target. Traditional biochemical assays to screen for enzyme inhibitors focus on a single substrate to product relationship and limit the comprehensive analysis of enzymes such as POLB that utilize multiple substrates or catalyze a multi-step reaction.

View Article and Find Full Text PDF

Our study aims to highlight the effects of the addition of phosphogypsum on certain fresh and hardened characteristics of geopolymer matrices based on metakaolin or fly ash. In the fresh state, workability and setting were studied by rheology and by the electrical conductivity measurement. The hardened state was characterized by XRD, DTA, SEM, and compressive strength measurement.

View Article and Find Full Text PDF

Nondestructive cell membrane permeabilization systems enable the intracellular delivery of exogenous biomolecules for cell engineering tasks as well as the temporal sampling of cytosolic contents from live cells for the analysis of dynamic processes. Here, we report a format live-cell analysis device (LCAD) that can perform localized-electroporation induced membrane permeabilization, for cellular delivery or sampling, and directly interfaces with surface-based biosensors for analyzing the extracted contents. We demonstrate the capabilities of the LCAD via an automated high-throughput workflow for multimodal analysis of live-cell dynamics, consisting of quantitative measurements of enzyme activity using self-assembled monolayers for MALDI mass spectrometry (SAMDI) and deep-learning enhanced imaging and analysis.

View Article and Find Full Text PDF

The 3-chymotrypsin-like cysteine protease (3CLpro) of severe acute respiratory syndrome conoravirus 2 (SARS-CoV-2) remains a promising therapeutic target to combat COVID-19. Our group recently described a novel duplexed biochemical assay that combines self-assembled monolayers of alkanethiolates on gold with matrix assisted laser desorption ionization (MALDI) time of flight (TOF) mass spectrometry (MS) to simultaneously measure 3CLpro and human rhinovirus 3C protease activities. This study describes applying the assay for the completion of a high-throughput duplexed screen of 300,000 diverse, drug-like small molecules in 3 days.

View Article and Find Full Text PDF

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the virus responsible for the global COVID-19 pandemic. Nonstructural protein 14 (NSP14), which features exonuclease (ExoN) and guanine N7 methyltransferase activity, is a critical player in SARS-CoV-2 replication and fidelity and represents an attractive antiviral target. Initiating drug discovery efforts for nucleases such as NSP14 remains a challenge due to a lack of suitable high-throughput assay methodologies.

View Article and Find Full Text PDF