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Ten commercial antibodies for alpha-1-adrenergic receptor subtypes are nonspecific
Open accessAbstract
Commercial antibodies are used widely to quantify and localize the alpha1-adrenergic receptor (AR) subtypes, alpha1A, alpha1B, and alpha1D. We tested ten antibodies, from abcam and Santa Cruz, using western blot with heart and brain tissue from wild-type (WT) mice and mice with systemic knockout (KO) of one or all three subtypes. We found that none of the antibodies detected a band in WT that was absent in the appropriate KO or in the KO that was null for all alpha1-ARs (ABDKO). We conclude that the antibodies we tested are not specific for alpha1-ARs. These results raise caution with prior studies using these reagents. For now, competition radioligand binding is the only reliable approach to quantify the alpha1-AR subtype proteins. Receptor protein localization remains a challenge.
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Metadata
- Authors
- Jensen, B. C., Swigart, P. M., & Simpson, P. C.
- Affiliations
- San Francisco VA Medical Center (US)
- Corresponding author
- Simpson, Paul C.
- Venue
- Naunyn-Schmiedeberg's Archives of Pharmacology
- Published
- 2008-11-07
- Volume
- 379
- Issue
- 4
- Pages
- 409-412
- ISSN
- 0028-1298 (ISSN-L)
- 1432-1912
- PMC
- PMC2653258
- OpenAlex
- W2077606276
- Cited by
- 176
- References
- 12
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 7 · 2023: 8 · 2022: 6 · 2021: 11 · 2020: 10 · 2019: 11 · 2018: 9 · 2017: 8 · 2016: 14 · 2015: 8 · 2014: 20 · 2013: 14 · 2012: 12
- FWCI
- 4.12
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Naunyn-Schmiedeberg s Archives of Pharmacology (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- U.S. Department of Veterans Affairs
- National Heart, Lung, and Blood Institute (R01HL031113)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Life Sciences › Immunology and Microbiology › Immunology › Monoclonal and Polyclonal Antibodies Research
- Keywords
- alpha1-adrenoceptors, commercial antibodies, antibody specificity, receptor knockout mice, receptor localization
- MeSH terms
- Animals, Antibodies, Antibody Specificity, Brain Chemistry, Mice, Inbred C57BL, Myocardium, Blotting, Western, Receptors, Adrenergic, alpha-1, Mice, Knockout, Mice
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