Bioassay
Bioassay — An analytical method that measures the biological activity of a substance by testing its effect on living cells, tissues, or organisms.
What Is a Bioassay?
A bioassay is any test that uses a biological system (cells, tissues, organisms) to measure the potency or biological activity of a peptide. Unlike analytical assays (HPLC, MS) that measure chemical properties, bioassays confirm that the peptide is functionally active and produces the intended biological effect at the expected concentration.
Bioassay Types
- Cell-based: Reporter gene, proliferation, migration, apoptosis assays in cultured cells
- Receptor binding: Radioligand displacement, fluorescence polarization measuring affinity
- Functional: cAMP, calcium flux, beta-arrestin recruitment measuring signaling
- In vivo: Whole-animal pharmacodynamic models (GH release, blood pressure, pain thresholds)
Frequently Asked Questions
What is Bioassay?
An analytical method that measures the biological activity of a substance by testing its effect on living cells, tissues, or organisms.
Why is Bioassay important in peptide research?
Bioassay is a fundamental concept in analytical as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.