Assessing T-cell Receptor-Induced Calcium Influx Using a Calcium Indicator Dye

Published: April 30, 2024

Abstract

Source: Perrenoud, L. et al., Analysis of T-cell Receptor-Induced Calcium Influx in Primary Murine T-cells by Full Spectrum Flow Cytometry. J. Vis. Exp. (2022)

This video analyzes T-cell receptor-induced calcium influx in T-cells. Anti-CD3 antibodies activate the T-cell signaling pathways, leading to an increase in intracellular calcium ions that bind with Indo-1 dye. In flow cytometry, a spectrum shift from the calcium-free state to the calcium-bound state  correlates with T-cell receptor-induced calcium influx.

Protocol

All procedures involving animal models have been reviewed by the local institutional animal care committee and the JoVE veterinary review board. 1. Preparation of immune cells from the mouse spleen NOTE: Euthanize naïve mice with carbon dioxide (CO2) euthanasia. C57BL/6 mice purchased from Jackson Laboratories and bred in-house are used for experiments at 6-12 weeks of age. Both male and female mice are utilized f…

Açıklamalar

The authors have nothing to disclose.

Materials

12 well TC treated plates Cell Treat 229111
50 mL conical Greiner Bio1 41-12-17-03 50 mL Polypropylene centrifuge tubes with cap
5mL polysterene flow tubes Corning 352052
5mL syringe BD syringe 309646 plunger only is used sheith is discarded
70uM filter Greiner bio1 542070
aCD3 (17A2) Biolegend 100202
AKC lysis Buffer Gibco A1049201
Aurora Spectral Flowcytometer https://cytekbio.com/pages/aurora
Bath Beads coleparmer Item # UX-06274-52
CD19 PE Tonbo 50-0193-U100
CD1d Tetramer APC NIH
CD25 PECy7 ebioscience 15-0251
CD4 APC Cy7 Tonbo 25-0042-U100
CD8a FITC ebioscience 11-0081-85
Cell Incubator Formal Scientific
Dissection Tools forceps McKesson #487593 Tissue Forceps McKesson Adson 4-3/4 Inch Length Office Grade Stainless Steel NonSterile NonLocking Thumb Handle 1 X 2 Teeth
Dissection Tools Scissors McKesson #970135 Operating Scissors McKesson Argent™ 4-1/2 Inch Surgical Grade Stainless Steel Finger Ring Handle Straight Sharp Tip / Sharp Tip
DPBS 1x Gibco 14190-136 DPBS 
EGTA Fisher NC1280093
FBS Hyclond SH30071.03 lot AE29165301
FlowJo Software https://www.flowjo.com/
Indo1-AM Ester Dye ebioscience 65-085-39 Calcium Loading Dye 
Ionomycin Millipore 407951-1mg
Live/Dead Ghost 540 Tonbo 13-0879-T100
Microcentrifuge tubes 1.7mL Light Labs A-7001
Penicillin/Streptomycin/L-Glutamine Gibco 10378-016
PRN694 Med Chem Express Hy-12688
Purified Anti-Mouse CD16/CD32 (FC Shield) (2.4G2) Tonbo 70-0161-M001 FC Block
RPMI Gibco 1875093  + phenol red
RPMI phenol free Gibco 11835030  -phenol red
Table top centrifuge Beckman Coulter Allegra612
TCRβ PerCP Cy5.5 ebioscience 45-5961-82
TCRγ/δ Pe Cy5 ebioscience 15-5961-82
Vi-Cell Blu Reagent Pack Product No: C06019 Includes Tripan
Vi-Cell Blu Beckman Coulter
Waterbath Fisher Brand Dry bath

Etiketler

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Assessing T-cell Receptor-Induced Calcium Influx Using a Calcium Indicator Dye. J. Vis. Exp. (Pending Publication), e22131, doi: (2024).

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