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Abstract

Biology

Direct Detection of Isolevuglandins in Tissues Using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence

Published: July 5th, 2021

DOI:

10.3791/62603

1Vanderbilt Eye Institute, Vanderbilt University Medical Center, 2Department of Cell and Developmental Biology, Vanderbilt University, 3Department of Biochemistry, Vanderbilt University, 4Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, 5Division of Hematology and Oncology, Indiana University School of Medicine, 6Department of Molecular Physiology and Biophysics, Vanderbilt University

* These authors contributed equally

ERRATUM NOTICE

Important: There has been an erratum issued for this article. Read more …

Abstract

Isolevuglandins (IsoLGs) are highly reactive gamma ketoaldehydes formed from H2-isoprostanes through lipid peroxidation and crosslink proteins leading to inflammation and various diseases including hypertension. Detection of IsoLG accumulation in tissues is crucial in shedding light on their involvement in the disease processes. However, measurement of IsoLGs in tissues is extremely difficult, and currently available tools, including mass spectrometry analysis, are laborious and extremely expensive. Here we describe a novel method for in situ detection of IsoLGs in tissues using alkaline phosphatase-conjugated D11 ScFv and a recombinant phage-display antibody produced in E. coli by immunofluorescent microscopy. Four controls were used for validating the staining: (1) staining with and without D11, (2) staining with bacterial periplasmic extract with the alkaline phosphatase linker, (3) irrelevant scFV antibody staining, and (4) competitive control with IsoLG prior to the staining. We demonstrate the effectiveness of the alkaline phosphatase-conjugated D11 in both human and mouse tissues with or without hypertension. This method will likely serve as an important tool to study the role of IsoLGs in a wide variety of disease processes.

Erratum

Erratum: Direct Detection of Isolevuglandins in Tissues using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence

An erratum was issued for: Direct Detection of Isolevuglandins in Tissues using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence. The Authors section was updated from:

Cassandra Warden1
Alan J. Simmons2
Lejla Pasic3
Sean S. Davies4
Justin H. Layer5
Raymond L. Mernaugh3
Annet Kirabo4,6
1Vanderbilt Eye Institute, Vanderbilt University Medical Center
2Department of Cell and Developmental Biology, Vanderbilt University
3Department of Biochemistry, Vanderbilt University
4Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center
5Division of Hematology and Oncology, Indiana University School of Medicine
6Department of Molecular Physiology and Biophysics, Vanderbilt University

to:

Cassandra Warden1
Alan J. Simmons2
Lejla Pasic3
Ashley Pitzer4,6
Sean S. Davies4
Justin H. Layer5
Raymond L. Mernaugh3
Annet Kirabo4,6
1Vanderbilt Eye Institute, Vanderbilt University Medical Center
2Department of Cell and Developmental Biology, Vanderbilt University
3Department of Biochemistry, Vanderbilt University
4Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center
5Division of Hematology and Oncology, Indiana University School of Medicine
6Department of Molecular Physiology and Biophysics, Vanderbilt University

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Keywords Isolevuglandins

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