An Immunofluorescence Technique for Viral Protein Localization in Infected Cells
Published: April 30, 2024
Abstract
Source: Samrat, S. K. et al., Temporal Analysis of the Nuclear-to-cytoplasmic Translocation of a Herpes Simplex Virus 1 Protein by Immunofluorescent Confocal Microscopy. J. Vis. Exp. (2018)
This video demonstrates a method for monitoring infected cell protein 0, ICP0 trafficking in herpes simplex virus-1 infection. Post-de novo synthesis, ICP0 translocates to the nucleus, later moving to the cytoplasm during infection progression. Immunofluorescence microscopy reveals and analyzes the protein's subcellular localization, offering insights into its trafficking across infection phases.
Protocol
1. Cell Seeding and Virus Infection At 20–24 h before the virus infection, seed 5 x 104 of human embryonic lung (HEL) fibroblast cells or other cells to be examined on a 4-well 11 mm staggered slide in growth medium (Dulbecco's Modified Eagle Medium (DMEM) supplemented with 10% fetal bovine serum (FBS)). Incubate the cells at 37 °C with 5% carbon dioxide (CO2). NOTE: Each well should have 70-80% cell confluency at the time of i…
Representative Results
Figure 1: Dynamic trafficking of ICP0 during HSV-1 infection. HEL cells grown on 4-well slides were infected with prototype HSV-1 (strain F) at 10 pfu/cell. At 1, 5, and 9 h post infection (hpi), cells were fixed, permeabilized, and reacted to rabbit anti-ICP0 and mouse anti-PML primary antibodies, and then reacted to Alexa 594-conjugated anti-rabbit and Alexa 488-cojugated anti-mouse second…
Disclosures
The authors have nothing to disclose.
Materials
| Cells and viruses | |||
| Human Embryonic Lung fibroblasts (HEL Cells) | Dr. Thomas E. Shenk (Princeton University) | HEL cells were grown in DMEM supplemented with 10% FBS | |
| HSV-1 viral Stock (Strain F) | Dr. Bernard Roizman Lab | ||
| Medium | |||
| Dulbecco's modified Eagle's medium (DMEM) | Invitrogen | 11965-092 | |
| Fetal Bovine Serum (FBS) | Sigma | F0926-500ml | |
| Medium-199 (10X) | Gibco | 11825-015 | |
| Reagents | |||
| 4- well 11 mm staggered slide | Cel-Line/Thermofisher Scientific | 30-149H-BLACK | |
| 16% Paraformaldehyde solution(w/v) Methanol free | Thermo Scientific | 28908 | |
| Triton X-100 | Fisher reagents | BP151-1C0 | |
| Bovine Serum Abumin (BSA) | Calbiochem | CAS 9048-46-8 | |
| Horse Serum | Sigma | H1270 | |
| Phosphate Buffered Saline (PBS) (137 mM NaCl, 2.7 mM KCl, 10 mM Na2HPO4, pH7.4) | Dr. Haidong Gu lab | ||
| NaCl | Fisher Bioreagent | BP358-212 | |
| KH2PO4 | Fisher Bioreagent | BP362-500 | |
| KCl | Fisher Scientific | BP366-500 | |
| Na2HPO4 | Fisher Bioreagent | BP332-500 | |
| Blocking buffer (PBS with 1% BSA and 5% Horse serum ) | Dr. Haidong Gu lab | ||
| Rabiit Anti-ICP0 antibody | Dr. Haidong Gu lab | ||
| PML (PG-M3)-Mouse monoclonal IgG | santa Cruz Biotechnology | SC-966 | |
| Alexa Fluor 594-goat anti-rabbit IgG | invitrogen | A11012 | |
| Alexa Fluor 488-goat anti-mouse IgG | invitrogen | A11001 | |
| Vectashield Mouting medium with DAPI | Vector laboratories | H-1200 | |
| Pasteur pipette | Fisher Brand | 13-678-20D | |
| Nail Polish | Sally Hansen | ||
| Equipment | |||
| Confocal Microscope | Leica SP8 | ||
| Confocal Software | Leica LAS X Application suite | ||
| Excel software | Microsoft Excel | ||
| HERAcell 150i CO2 incubator | Thermo Scientific | Order code 51026282 |
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Cite This Article
An Immunofluorescence Technique for Viral Protein Localization in Infected Cells. J. Vis. Exp. (Pending Publication), e22140, doi: (2024).