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AimGel Human NK Cell Activator
Human NK cell activation with cell-sized hydrogel microparticles


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/mLQuantityComing soonEasy, 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
Data

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.

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.

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.

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
Hong Kong
Lab Panda
Hong Kong
Allegrow Webstore
Other regions
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