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Davison C, Harzman H, Nicholson J, Entriken S, Mobley K, Krull A, Singhal M, Skow C, Matthews N, Kopp L, Gillette B, Weide TJ, Hukvari JR, Stumpf SC, Feldmann OM, McGrail M, Srivastava R, Essner JJ. Tagging the tjp1a Gene in Zebrafish with Monomeric Red Fluorescent Protein Using Biotin Homology Arms. Zebrafish 2024; 21:191-197. [PMID: 38621205 PMCID: PMC11035848 DOI: 10.1089/zeb.2023.0096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024] Open
Abstract
Tjp1a and other tight junction and adherens proteins play important roles in cell-cell adhesion, scaffolding, and forming seals between cells in epithelial and endothelial tissues. In this study, we labeled Tjp1a of zebrafish with the monomeric red fluorescent protein (mRFP) using CRISPR/Cas9-mediated targeted integration of biotin-labeled polymerase chain reaction (PCR) generated templates. Labeling Tjp1a with RFP allowed us to follow membrane and junctional dynamics of epithelial and endothelial cells throughout zebrafish embryo development. For targeted integration, we used short 35 bp homology arms on each side of the Cas9 genomic target site at the C-terminal of the coding sequence in tjp1a. Through PCR using 5' biotinylated primers containing the homology arms, we generated a double-stranded template for homology directed repair containing a flexible linker followed by RFP. Cas9 protein was complexed with the tjp1a gRNA before mixing with the repair template and microinjected into one-cell zebrafish embryos. We confirmed and recovered a precise integration allele at the desired site at the tjp1a C-terminus. Examination of fluorescence reveals RFP cell-cell junctional labeling using confocal imaging. We are currently using this stable tjp1a-mRFPis86 line to examine the behavior and interactions between cells during vascular formation in zebrafish.
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Affiliation(s)
- Connor Davison
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Hamelynn Harzman
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Jessie Nicholson
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Seth Entriken
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Kierinn Mobley
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Abigail Krull
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Manik Singhal
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Caleb Skow
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Nathan Matthews
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Lindsey Kopp
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Benjamin Gillette
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Tyler J. Weide
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Jana R. Hukvari
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Sofia C.P. Stumpf
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Olivia M. Feldmann
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Maura McGrail
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Renu Srivastava
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
| | - Jeffrey J. Essner
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, USA
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