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    Allegrow Biotech Logo
    Allegrow Biotech Logo
    • Products 
      • AimGel
      • Cells
    • Technology 
      • Overview
      • Deep Dive
    • About 
      • Our Team
      • Our Story
      • News
      • Contact
    • Resources 
      • Product Resources
      • Investor Teaser
      • AimGel Builder
    • …  
      • Products 
        • AimGel
        • Cells
      • Technology 
        • Overview
        • Deep Dive
      • About 
        • Our Team
        • Our Story
        • News
        • Contact
      • Resources 
        • Product Resources
        • Investor Teaser
        • AimGel Builder
      Where to Buy
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      • AimGel Human NK Cell Activator

        Human NK cell activation with cell-sized hydrogel microparticles

        AimGel Human NK Cell Activator

        AimGel Human NK Cell Activator

        $380.00
        ANK01-0050H | Research Use Only

        AimGel Human NK Cell Activator presents NK activating signals on soft hydrogel microparticles built to the size of a real NK cell (7-12 µm). The fluid lipid membrane lets those signals move freely across the surface, the way they do on a natural antigen-presenting cell. Activation is gentle and effective. Feeder-free, chemically defined, with no animal components.

        1 vial, 0.5 mL in PBS at 4 × 10⁷ microparticles/mL
        Quantity
        Coming soon
      • Easy, biocompatible and feeder-free

        A synthetic feeder cell

        The soft hydrogel core matches the mechanical stiffness and size of a real cell, while a mobile lipid bilayer lets activation signals travel across the surface just as they would on a natural APC.

        Compatible with existing NK media

        AimGel isn't a replacement for your media, it goes with it. Added to popular NK media, AimGel consistently produced more cells, reaching >800-fold by day 14.

        Keeps going through re-stimulation

        Re-stimulate at day 14 and AimGel-activated NK cells expand a further ~120-fold over the next two weeks.

        Feeder-free and fully defined

        No feeder cells, no animal components. AimGel is 100% synthetically with fully defined structures and ratios.

      • Product Details

        Specifications

        A suspension of AimGel hydrogel microparticles made of chemically crosslinked dextran. Microparticles sized 7-12 µm, coated with a phospholipid bilayer, with human NK cell activating signal panels docked to the membrane.

        Inside the kit

        • 1 vial of AimGel Human NK Cell Activator in PBS at 4 × 10⁷ microparticles/mL, with 0.5% P/S
        • 1 vial of lysis buffer (100×), dextranase in PBS

        Storage & stability

        • Ships on ice
        • Do not freeze, keep refrigerated at 2–8 °C, stable for 12 months.
        • Contents are sterile when unopened

        You will also need

        • Cryopreserved/freshly isolated NK cells
        • RPMI 1640 supplemented with 2 mM L-glutamine, or equivalent
        • Heat-inactivated fetal bovine serum (FBS)
        • Penicillin/streptomycin
        • 2-Mercaptoethanol
        • 25 mM HEPES and 1× non-essential amino acids
        • Recombinant human IL-2
        • For priming cryopreserved NK cells only: IL-21, IL-15 or IL-18
        • Cell culture vessels, humidified CO₂ incubator or bioreactor

        Documents

        • Protocol
      • Data

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        Compatibility with existing media

        Isolated NK cells expanded in two commercial NK media (Brand T & Brand M), with and without AimGel, and with a commercial magnetic bead kit (Brand M). Adding AimGel raised expansion roughly three-fold over medium alone at both timepoints, and outperformed the magnetic bead kit. Mean ± SD, n=4. * p<0.05, ** p<0.01, *** p<0.001.

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        Activation and re-stimulation

        NK cells activated with AimGel in a commercial NK medium (Brand T), re-stimulated at day 14, and followed for a further two weeks. AimGel-activated cells continued expanding after re-stimulation; cells in medium alone peaked and then declined.

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        Cytotoxic effects

        Cytotoxic activity of expanded NK cells against K562 target cells at effector-to-target ratios of 2:1 and 4:1. AimGel-expanded cells lysed targets as effectively as cells grown in medium alone, despite the substantially larger population.

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        Degradation toxicity

        AimGel microparticles, as well as the degradation products showed excellent biocompatibility and minimum cytotoxicity at working dosage, regardless of the degradation method: enzymatic (user-triggered via lysis buffer) or hydrolysis (available upon request). 10% DMSO used as control for killing the NK cells.

      • FAQs

        When activating or expanding NK cells using AimGel, how many cells do I have to seed to start the culture?

        We recommend a seeding density rather than a fixed particle-to-cell ratio.
        • Isolated CD3⁻CD56⁺ NK cells: 2.5 × 10⁵ per cm²
        • AimGel microparticles: 2.5 × 10⁵ per cm²
        See the full protocol for a per-plate volume table.

        What should I do if I see cells clustering during cell culture?

        Clustering is normal and expected in the first week, this shows the microparticles and NK cells interacting. Do not disturb that interaction for the first 6 days, to allow full activation. At day 6–7, gently pipette the cell and microparticle suspension up and down to break up clumps.
        If you need to redistribute cells before then, gently shake the culture plate rather than pipetting.

        Can I re-stimulate my NK cells with AimGel?

        Yes. Growth typically slows after day 16, and re-stimulating promotes continued expansion with minimal activation-induced exhaustion. We recommend 1 × 10⁵ microparticles per cm² for re-stimulation.
        Do not use the lysis buffer if you plan to re-stimulate, as residual dextranase will degrade freshly added AimGel unless it is thoroughly washed out.

        Is AimGel (for human NK cells) compatible with other media?

        Yes. We have tested AimGel across several commercial NK-specific media, and adding it improved expansion in every one. See the expansion data above for two examples.
      • Order Now

        Purchase through our distributors, or our webstore if no distributor is serving your region.

        LAB-A-PORTER logo, distributor for Hong Kong

        LAB-A-PORTER

        Hong Kong

        Buy on LAB-A-PORTER
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        Lab Panda

        Hong Kong

        Contact Lab Panda

        Allegrow Webstore

        Other regions

        Allegrow Webstore
      • Other Activators in the AimGel lineup

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        Human T Cell Activator

        T cell activation and expansion straight from PBMC. Drop-in replacement for CD3/CD28 beads with superior performance.

        Learn More
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        Mouse T Cell Activator

        Activate mouse T cells with AimGel artificial cells, straight from PBMC.

        Learn More
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        Dog T Cell Activator

        Activate dog T cells with AimGel artificial cells, straight from PBMC.

        Learn More
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        Aim-Core

        Blank artificial cells for custom applications. Dock your own biotinylated signals.

        Learn More
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