NK Cell Therapy
Natural killer cell immunotherapy explained
Overview
NK (Natural Killer) cells are a core component of the innate immune system, making up 5%-15% of peripheral blood lymphocytes. Acting like 24/7 patrols, they recognize and eliminate abnormal cells — including virus-infected and tumor cells — without prior antigen exposure. Unlike T cells and B cells, NK cells require no antigen presentation or prior sensitization, making them the body’s first line of defense against tumors.
🎯 Smart Recognition
NK cells carry both “activating” and “inhibitory” receptors. Normal cells express MHC-I, which binds inhibitory receptors and keeps NK cells quiet; tumor cells often downregulate MHC-I and upregulate stress molecules, breaking the balance and triggering activation.
⚔️ Dual Killing
Activated NK cells eliminate target cells through two pathways: releasing perforin and granzyme to lyse cell membranes directly, and inducing apoptosis via death receptors (FasL/TRAIL).
🛡️ Immune Activation
While killing tumor cells, NK cells secrete IFN-γ and TNF-α, activating dendritic cells and T cells to link innate and adaptive immunity, forming lasting anti-tumor immune memory.
Clinical Exploration
NK cell therapy collects NK cells from the patient or a healthy donor, activates and expands them in the laboratory, then reinfuses them to strengthen the body’s anti-tumor immunity. Current approaches include autologous NK cell expansion, allogeneic NK cells (including cord blood-derived), and CAR-NK (genetically engineered NK cells). Hundreds of NK cell clinical trials are ongoing worldwide, covering hematological and solid tumors.
The special policy environment of the Boao Lecheng Pilot Zone gives patients access to cutting-edge international NK cell technologies. Our medical team evaluates each patient’s condition, treatment history and physical status to determine the suitability of NK cell therapy.
FAQ
Is NK cell therapy safe?
NK cell therapy is generally well tolerated, with mild side effects such as transient fever and fatigue. Severe adverse reactions (e.g., cytokine release syndrome) are far less common than with CAR-T therapy. As with any medical technology, risks exist and treatment must be supervised by professional physicians.
How many treatment cycles are needed?
The number of cycles varies by disease type, stage and treatment goals. A typical course includes multiple cell reinfusions with intervals for efficacy and safety assessment. The specific plan is determined by a multidisciplinary team.
Can it be combined with other treatments?
NK cell therapy can be combined with surgery, chemotherapy, radiotherapy, immune checkpoint inhibitors and other treatments. Studies show combination therapy often outperforms single therapy. The specific plan is determined by the attending medical team.
Want to know if NK cell therapy is right for you or your family?
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