Reviewed by Sarah Alter, Ph.D. — Scientific Affairs, OrganaBio. 15 years of immunology research spanning autoimmunity, cancer, and infectious disease. University of Miami Miller School of Medicine. Registered Patent Agent.
Non-Hodgkin lymphoma (NHL) encompasses a broad group of lymphoid malignancies, with diffuse large B cell lymphoma (DLBCL) representing the most common aggressive subtype. NHL donor PBMCs are used to study the tumor immune microenvironment, validate CAR-T and NK cell therapy targets, develop antibody-dependent cellular cytotoxicity (ADCC) assays, and characterize the immunosuppressive state that limits checkpoint therapy response in B cell malignancies.
Immune Biology of NHL Relevant to Translational Research
In NHL and DLBCL, peripheral blood immune populations reflect both the disease state and prior treatment. Chemotherapy-treated donors (R-CHOP, bendamustine-rituximab) have altered B and T cell compartments. Relapsed/refractory donors carry a more profoundly immunosuppressed phenotype with elevated regulatory T cells and exhausted CD8+ T cells. For CAR-T programs targeting CD19, CD20, or CD22, the presence and phenotype of residual antigen-positive B cells in circulation is a key variable.
ADCC assays against CD20, CD19, or CD38 targets require NK cells from donor PBMCs with documented CD56 and FcRIII (CD16) expression, alongside target cell lines. NHL donor PBMCs provide both the effector (NK, CD16+ monocyte) and, in some cases, the target (circulating malignant B cells) populations in a single lot.
OrganaBio NHL Donor Catalog
| Attribute | Available |
|---|---|
| NHL subtypes | DLBCL, follicular lymphoma, marginal zone lymphoma, CLL/SLL (overlap) |
| Treatment status documentation | Chemotherapy regimens, anti-CD20 exposure, CAR-T history on select lots |
| PBMC format | Cryopreserved apheresis-derived; high PBMC yields |
| Flow cytometry phenotyping | ✓ Per-lot including CD19, CD20, NK subset markers |
| Lot documentation | CoA, diagnosis, disease stage, prior treatment, viability |
Key Cell Populations for NHL Research
- Malignant B cells (CD19+/CD20+): Circulating in active NHL; target cells for CAR-T validation, ADCC assays, and complement-dependent cytotoxicity (CDC) studies
- NK cells (CD56+/CD16+): Primary ADCC effectors against CD20; KIR expression influences anti-tumor activity in antibody-based therapy contexts
- CD8+ exhausted T cells: PD-1hi/TIM-3+/LAG-3+ phenotype in relapsed/refractory NHL; checkpoint reversal target
- Regulatory T cells: Elevated in lymphoma microenvironment and reflected in peripheral blood; suppressive burden differs by subtype and treatment status
- CD4+ T helper cells: Th1/Tfh imbalance relevant to germinal center-derived lymphomas; IL-21 biology
Research Applications
- ADCC assay development and optimization for anti-CD20 (rituximab, obinutuzumab, mosunetuzumab), anti-CD19, and anti-CD38 antibodies
- CAR-T target validation: CD19, CD20, CD22, CD79b expression and antigen density characterization on circulating tumor B cells
- T cell exhaustion reversal assays for checkpoint inhibitors in R/R DLBCL (pembrolizumab, nivolumab combinations)
- NK cell-based immunotherapy development: ADCC, NK cell engager platforms, KIR-ligand mismatch optimization
- Bispecific antibody (bsAb) co-culture assays: T cell-mediated killing of CD19+ or CD20+ tumor B cells
- Immune reconstitution studies post-R-CHOP or post-autologous stem cell transplant