Genetically Modified K562 Feeder Cell
Genetically Modified K562 Feeder Cell
✓ Pre-irradiated, multi-cytokine enhanced for superior NK/TIL expansion.
✓ Validated for both cord blood and PBMC sources - CAR-ready.
✓ Pre-qualified for IND submissions with full characterization data.
Hillgene's NK and TIL Cell Expansion Reagent (Feeder cell) is an irradiated and inactivated engineered K562 cells expressing IL-21 and other cytokines, which, together with the mainstream immune cell culture medium, can activate and expand NK cells and tumor-infiltrating TIL cells derived from umbilical cord blood and peripheral blood mononuclear cells cultured in vitro, and the purity of the obtained NK and TIL cells is high.
Currently, several NK cells and TILs cell products produced using trophoblast cells have been approved for clinical use or marketed globally, and studies have shown that genetically modified K562 trophoblast cells can achieve more than 10,000-fold expansion of NK or CAR-NK cells in 15 days, which can meet the demand for their large-volume preparation.
Usage Flowchart
D0: Plasma and PBMC isolation, inoculation and activation
D4: Observe and medium exchange
D6: Observe and medium infusion
D8: Observe and medium infusion, re-activation
D10: Observe and medium exchange
D12: Observe and medium infusion
D14: Harvest
| Performance Program | Indicator results |
| NK/CAR-NK cell expansion | Over 5000 times (14d) |
| NK/CAR-NK cell viability | > 90% |
| NK/CAR-NK Cell purity | > 95% |
Shipping Information
We offer Refrigerated Transport on all orders. Typically, your order will arrive within 5-7 business days in the United States and within 10 business days for other countries. However, please note that delivery to rural areas may take a bit longer.
Shipping Time: Orders are typically processed within 1-3 business days. Once your order has been shipped, you’ll receive a confirmation email with tracking information.
Important Information
Order Processing: After the order has been paid, our warehouse needs some time to process your order. You will receive a notification once your order has been shipped.
Delivery Times: In most cases, the package will be delivered within the estimated time of arrival. However, the actual delivery date may be affected by flight arrangements, weather conditions, and other external factors. The delivery time frame will be longer than usual for orders that include preorder or customized items. Please refer to the tracking information for the most accurate delivery date.
Shipping Issues: If you find that your package has not been delivered within the specified time; the tracking information shows that the package has been delivered but you have not received it; or your package includes missing or incorrect items or other logistics issues, please contact our customer service within 7 days of the payment date so that we can address these issues promptly.
Shipping Restrictions
Please fill in the street address in detail, not PO BOX or military address (APO). Otherwise, we would have to use EMS for delivery (it's slower than others, taking around 1-2 months or even longer).
Customs Duties and Taxes Policy
Please note that any customs duties, taxes, or import fees incurred during shipping are the responsibility of the buyer. These charges vary depending on the destination country and are determined by local customs authorities.
By purchasing from our website, you agree to pay any applicable duties or taxes associated with your order. We are not responsible for delays caused by customs clearance.
Package Pickup Policy
Once your order has arrived at the designated pickup point or delivery location, please ensure prompt collection. If the package is not picked up within the designated time, we will send a reminder via email or SMS. However, if the package is not collected within the specified period, and any loss or damage occurs as a result, the buyer will be held responsible. We kindly remind you to collect your package promptly to avoid any potential issues.
Note:As our product falls under the special category, returns and refunds are not accepted.
