This kit contains recombinant Mouse IL-4, recombinant Mouse IFN-γ, and LPS. It is designed to efficiently and specifically induce mouse RAW264.7 cells in the M0 state (unpolarized, resting) into classical M1-type (pro-inflammatory) and M2-type (anti-inflammatory/reparative) macrophages in vitro. IFN-γ combined with LPS is used to polarize RAW264.7 cells into M1 macrophages. IFN-γ serves as the "priming" signal, upregulating the macrophages' responsiveness to subsequent stimuli. LPS acts as the "trigger" signal, initiating a robust pro-inflammatory response via the TLR4 pathway. IL-4 is used to polarize RAW264.7 cells into M2 macrophages. IL-4 drives the differentiation of macrophages towards the alternatively activated M2 phenotype by activating the STAT6 pathway. RAW264.7 cells are easy to culture, passage, and transfect, and exhibit clear responses to stimulation signals, making them a gold standard model for studying macrophage biology, immune responses, inflammatory diseases, cancer immunity, and therapeutic screening. Using this kit streamlines experimental workflows and ensures comparability of results across different experimental batches. Product Information Product Information. Catalog Number Size Mouse RAW264.7 Cell Polarization Induction Set 92648ES08 5 μg 92648ES50 50 μg 92648ES60 100 μg Components Component Cat No. Component Name 92648ES08 92648ES50 92648ES60 92648ES-A Mouse IL-4 Protein 5 μg 50 μg 100 μg 92648ES-B Mouse IFN-γ Protein 5 μg 50 μg 100 μg 92648ES-C Lipopolysaccharide (LPS) 5 mg 5 mg 15 mg Product Includes Component Cat No. Product Name Source Appearance Quantity 90144ES Mouse IL-4 Protein E.coli Lyophilized powder 1 91212ES Mouse IFN-γ Protein E.coli Lyophilized powder 1 60747ES Lipopolysaccharide (LPS) E.coli Lyophilized powder 1 Reconstitution Method Component Name Reconstitution Method Mouse IL-4 Protein Before opening, centrifuge first to bring the contents to the bottom. Reconstitute with sterile water to a concentration of 0.1-1.0 mg/mL; further dilution can be performed according to subsequent experiments. For long-term storage, it is recommended to add carrier protein (0.1% BSA) to the dilution buffer; aliquot into single-use amounts, store frozen at -80°C, and avoid repeated freeze-thaw cycles. Mouse IFN-γ Protein Lipopolysaccharide (LPS) Reconstitute with water or cell culture medium to a concentration of 1 mg/mL. Storage Component Name Storage Conditions Mouse IL-4 Protein Store at -25 ~ -15°C, valid for 1 year from the date of receipt. After reconstitution, store at 2~8°C under sterile conditions, valid for 7 days. After reconstitution, store at -85 ~ -65°C under sterile conditions, valid for 3 months. Mouse IFN-γ Protein Lipopolysaccharide (LPS) Store at 2~8°C protected from light, valid for 6 years. Notes 1. For your safety and health, please wear a lab coat and disposable gloves during operation. 2. This product is for research use only. Instructions Induction of RAW264.7 Cells into Macrophages I. M1 Polarization 1. Seeding: Seed cells in a 6-well plate at a density of 2 × 10⁵ cells/well. Incubate at 37°C with 5% CO₂ for 24 hours to allow full attachment. Note: Do not overload the cells; excessive cell density may affect polarization efficiency. 2. M1 Induction: Replace the medium with DMEM + 2% FBS (to minimize the impact of cytokines in the serum). Add recombinant Mouse IFN-γ (25 ng/mL) and LPS (100 ng/mL). Control: Set up a control group (cells only, without inducers). Incubate at 37°C with 5% CO₂ for 24 hours. II. M2 Polarization 1. Seeding: Seed cells in a 6-well plate at a density of 2 × 10⁵ cells/well. Incubate at 37°C with 5% CO₂ for 24 hours to allow full attachment. Note: Do not overload the cells; excessive cell density may affect polarization efficiency. 2. M2 Induction: Replace the medium with DMEM + 2% FBS (to minimize the impact of cytokines in the serum). Add recombinant Mouse IL-4 (40 ng/mL). Control: Set up a control group (cells only, without inducers). Incubate at 37°C with 5% CO₂ for 24 hours. Documents: Manuals: 92648_Manual_HB20260409 Related Blogs: M1 or M2 Macrophages? The Complete RAW264.7 Polarization Solution Researchers Need
