This product is a complete “stimulate-and-block” cocktail provided as a 500× concentrate. In addition to the classic stimulators PMA (Phorbol ester) and Ionomycin, it contains highly effective protein transport inhibitors Brefeldin A and Monensin Sodium. This formulation not only robustly activates immune cells (e.g., T cells, NK cells) to induce cytokine synthesis but also efficiently blocks Golgi-mediated transport, leading to the potent intracellular accumulation of cytokines (e.g., IFN-γ, TNF-α, IL-2). It is a ready-to-use solution optimized specifically for Intracellular Cytokine Staining (ICS) analyzed by flow cytometry.
Key Components:
Ethonal
PMA 25μg/mL, lonomycin 500μg/mL,brefeldin A 1.5mg/mL,Monensin sodium salt 0.7mg/mL
Applications
Standardized stimulation and blockade for Intracellular Cytokine Staining (ICS) and flow cytometry.
Detection of cytokine-producing capacity in immune cells (e.g., antigen-specific T cells) at the single-cell level.
Simultaneous analysis of cell surface markers and intracellular functional molecules.
NOT suitable for experiments requiring supernatant collection for ELISA, ELISpot, or multiplex assays (please use the version without protein transport inhibitors, Cat# C1508365 ).
Instructions for Use
Standard Stimulation Protocol (For ICS)
Cell Preparation: Suspend target cells (e.g., human PBMCs, mouse splenocytes) in complete medium at an appropriate density (recommended 1-2×10^6 cells/mL) and aliquot into culture plates or FACS tubes.
Stimulation: Add this cocktail to the cell suspension at a 1:500 ratio. For example, add 2 µL of the 500X concentrate to 1 mL of cell suspension. Mix gently.
Incubation (Stimulation & Blockade): Incubate cells in a 37°C, 5% CO₂ incubator. Critical Incubation Time: 4 to 6 hours. This duration ensures sufficient cytokine induction and optimal intracellular accumulation with minimal impact on cell viability, representing the ideal window for ICS.
Cell Processing: After stimulation, proceed directly to surface staining, followed by fixation, permeabilization, and intracellular staining.
Key Precautions
This cocktail contains optimal concentrations of both stimulators and inhibitors. Do NOT add any other protein transport inhibitors.
Stimulation time is critical. 4-6 hours is recommended. Shorter times may yield insufficient cytokine, while longer times (>6 hours) may increase cytotoxicity and background.
Because secretion is completely blocked, the supernatant from cells stimulated with this product CANNOT be used for soluble cytokine detection (e.g., ELISA).
Aliquot upon receipt to minimize freeze-thaw cycles.
规格
别名
细胞刺激混合物 (500×)
英文别名
Cell Stimulation Cocktail (Protein Transport Inhibitors Plus, 500×) | Cell Stimulation Cocktail (with Protein Transport Inhibitors) (500X) | Cell Activation Cocktail (with Brefeldin A) | Cell Stimulation Cocktail (plus protein transport inhibitors) (500X)
规格或纯度
无菌过滤,BioReagent,500×
稳定性与储存
Aliquot upon receipt and store frozen at -20°C(12 months). Protect from light. Avoid repeated freeze-thaw cycles
英文名称
Cell stimulation mixture (with protein transport inhibitor) (500X)