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Development of phenotypic assays for identifying novel blockers of L-type calcium channels in neurons
- Source :
- Scientific Reports, Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- L-type calcium channels (LTCCs) are highly expressed in the heart and brain and are critical for cardiac and neuronal functions. LTCC-blocking drugs have a long and successful record in the clinic for treating cardiovascular disorders. In contrast, establishment of their efficacy for indications of the central nervous system remains challenging given the tendency of existing LTCC drugs being functionally and mechanistically more selective for peripheral tissues. LTCCs in vivo are large macromolecular complexes consisting of a pore-forming subunit and other modulatory proteins, some of which may be neuro-specific and potentially harbor mechanisms for neuronal selectivity. To exploit the possibility of identifying mechanistically novel and/or neuro-selective blockers, we developed two phenotypic assays—a calcium flux-based primary screening assay and a patch clamp secondary assay, using rat primary cortical cultures. We screened a library comprised of 1278 known bioactive agents and successfully identified a majority of the potent LTCC-blocking drugs in the library. Significantly, we identified a previously unrecognized LTCC blocker with a novel mechanism, which was corroborated by patch clamp and binding studies. As such, these phenotypic assays are robust and represent an important step towards identifying mechanistically novel and neuro-selective LTCC blockers.
- Subjects :
- Patch-Clamp Techniques
Calcium Channels, L-Type
Phenotypic screening
Science
Protein subunit
Central nervous system
Biology
Article
Receptor pharmacology
In vivo
Calcium flux
medicine
Animals
L-type calcium channel
Patch clamp
Cells, Cultured
Ion transport
Cerebral Cortex
Neurons
Multidisciplinary
Voltage-dependent calcium channel
Calcium Channel Blockers
Phenotype
Rats
Cell biology
medicine.anatomical_structure
Medicine
Biological fluorescence
Subjects
Details
- ISSN :
- 20452322
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....b1d4af779c03c8c756461918a2bb4abf