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Detection of Th1/Th2 (4-color) in Human Peripheral Blood PBMC

Source: Elabscience®Published: Dec 21,2023

Purpose

Sample

Antibody Collocation

Adjust the voltage

1

Blank

Adjust compensation

2

CD3-PerCP/Cyanine5.5

3

CD4-FITC

4

IFN-γ-APC

5

IL-4-PE

APC-FMO in combination with Isotype Control for auxiliary gating

6

CD3-PerCP/Cyanine5.5, CD4-FITC, IL-4-PE; Mouse IgG1, κ Isotype Control-APC

PE-FMO in combination with Isotype Control for auxiliary gating

7

CD3-PerCP/Cyanine5.5, CD4-FITC, IFN-γ- APC; Rat IgG1, κ Isotype Control-PE

Full panel

6

CD3-PerCP/Cyanine5.5, CD4-FITC, IFN-γ- APC, IL-4-PE

Marker

Fluorochrome

Clone No.

Cat. No.

CD3

PerCP/Cyanine5.5

OKT3

E-AB-F1001J

CD4

FITC

SK3

E-AB-F1352C

IFN-γ

APC

B27

E-AB-F1196E

IL-4

PE

MP4-25D2

E-AB-F1203D

Mouse IgG1, κ Isotype Control

APC

MOPC-21

E-AB-F09792E

Rat IgG1, κ Isotype Control

PE

HRPN

E-AB-F09822D

Tips:

1. After PBMC sorting, it is necessary to first use cytokine stimulating and blocking agents for stimulating and blocking culture (The reagents used in this experiment are: Cytokine Activation and Protein Blocking Kit (E-CK-A091). The cultivation conditions are as follows: after 1 hour of stimulation with a stimulating agent, add a blocking agent and incubate for another 4.5 hours), then collect cells for subsequent Flow Cytometry experiments.

2. PMA stimulation can cause partial endocytosis of CD4 on the surface of human T cells, so we need to choose the CD4 clone SK3 with minimal impact on endocytosis.

3. Isotype Controls for IFN-γ and IL-4 are necessary, since the expression of cytokines is generally not high.

4. CD3+ CD4+ IFN-γ+ is Th1 type,CD3+ CD4+ IL-4+ is Th2 type.

5. The Permeabilization buffer may cause significant damage to cells, so it is recommended that the cell precipitates formed after centrifugation should be dispersed into cell suspensions before adding the Permeabilization buffer to reduce cell damage.