Ph Modulation Assay

A pH modulation assay is an experimental method that examines how controlled changes in acidity or alkalinity affect a biological, chemical, or engineered system. The assay typically adjusts the pH of a buffered solution or culture environment across a defined range, then measures a response such as enzyme activity, molecular binding, cell viability, material behavior, or signal intensity. In bioengineering, these measurements help identify pH-dependent mechanisms and operating conditions for enzymes, biomaterials, biosensors, drug delivery systems, and cell-based platforms. Results can guide formulation design, process optimization, and evaluation of system stability under physiologically relevant or manufacturing conditions.

Ph Modulation Assay - Related Videos

Research

JoVE Journal - Biology

A Fluorescent Screening Assay for Identifying Modulators of GIRK Channels

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Cited by 7 •

2012

A real-time screening procedure for identifying drugs that interact with G protein-gated inward rectifier K+ (GIRK) channels is described. The assay utilizes membrane potential-sensitive fluorescent dyes to measure GIRK channel activity. This technique is adaptable for use on a number of cell lines.

Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System

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Cited by 2 •

2010

Magnetic modulation biosensing system is utilized to rapidly, sensitively and simply detect biological assays, such as DNA molecules and proteins.

Fabrication of Micro-tissues using Modules of Collagen Gel Containing Cells

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Cited by 9 •

2010

Creation of micro-tissues using cylindrical collagen gels, called modules, that contain embedded cells and which surface is coated with endothelial cells.

Research

JoVE Journal - Biology
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A Screenable In Vivo Assay for Mitochondrial Modulators Using Transgenic Bioluminescent Caenorhabditis elegans

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Cited by 20 •

2015

A protocol is described for in vivo detection of effects of mitochondrial inhibitors in the model organism Caenorhabditis elegans and for identification of potential enhancing compounds. This protocol can be used to screen drug libraries for compounds modulating mitochondrial function.

pH Modulation Assay on Supported Lipid Bilayers to Detect Protein-Phosphoinositide Interactions

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2025

In this video, we demonstrate protein-phosphoinositide interactions in a microfluidic pattern using the pH modulation assay, using pH-sensitive fluorescent dye tagged to phosphatidylethanolamine lipid of a supported lipid bilayer, called a microfluidic platform. The modulations in pH after protein binding to phospholipid cause fluorescence quenching.

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