Publications
Enhanced Bone Marrow Homing of Natural Killer Cells Following mRNA Transfection With Gain-of-Function Variant CXCR4R334X
This study enhanced NK cell bone marrow homing by transfecting them with a CXCR4 variant. NK cells were expanded ex vivo for 14-18 days in G-Rex with feeder cells, providing a robust platform for generating cells for genetic modification.
Publications
Automated Clinical Grade Expansion of Regulatory T Cells in a Fully Closed System
This study established an automated process for Treg expansion on the CliniMACS Prodigy. Manual expansion in G-Rex 100 and G-Rex 10 served as the standard control, showing comparable expansion kinetics and phenotype to the automated system.
Publications
Streamlined production of genetically modified T cells with activation, transduction and expansion in closed-system G-Rex
The authors developed a streamlined manufacturing process for CAR-T cells performed entirely within G-Rex. This approach, including transduction in the G-Rex, reduced costs and labor while maintaining cell quality compared to bag-based methods.
Publications
Leukoreduction system chambers are a reliable cellular source for the manufacturing of T-cell therapeutics
This study validates leukoreduction system chambers as a source of PBMCs for T cell therapy. G-Rex culture vessels were used to generate and expand pathogen-specific T cell lines, showing they are equivalent to those derived from peripheral blood.
Publications
Phase 1 Trial of Autologous CAR T Cells Targeting NKG2D Ligands in Patients with AML/MDS and Multiple Myeloma
This Phase 1 trial demonstrated the safety of NKG2D CAR-T cells in hematologic cancers. G-Rex were used for the ex vivo expansion of CAR-T cells during the 9-day manufacturing process, ensuring sufficient cell yield for infusion.
Publications
BRAF targeting sensitizes resistant melanoma to cytotoxic T cells
The study investigates combining BRAF inhibitors with TIL therapy for resistant melanoma. In the associated clinical trial, patient TILs were rapidly expanded in G-Rex, facilitating the combination therapy approach.
Publications
Enabling Large-Scale Ex Vivo Production of Megakaryocytes from CD34+ Cells Using Gas-Permeable Surfaces
This study evaluated G-Rex culture systems for producing megakaryocytes from CD34+ cells. G-Rex cultures with optimized seeding densities significantly increased the expansion of Mk progenitors and overall yield compared to standard tissue culture surfaces.
Publications
Large-scale expansion of Vγ9Vδ2 T cells with engineered K562 feeder cells in G-Rex vessels and their use as chimeric antigen receptor– modified effector cells
A method to expand Vγ9Vδ2 T cells using engineered K562 aAPCs was optimized in G-Rex vessels. The G-Rex platform enabled the generation of large numbers of functional gamma-delta T cells suitable for CAR modification and allogeneic therapy.
Publications
Identification of neoepitopes recognized by tumor-infiltrating lymphocytes (TILs) from patients with glioma
This study identified neoepitopes recognized by TILs from glioblastoma patients. G-Rex were used to expand TILs from tumor digests in the presence of OKT3 and irradiated feeder cells, providing sufficient cells for immune reactivity testing.
Publications
Utilizing T-cell activation signals 1, 2 and 3 for tumor-infiltrating lymphocytes (TIL) expansion: the advantage over the sole use of interleukin-2 in cutaneous and uveal melanoma
A novel TIL expansion method combining IL-2, anti-4-1BB, and OKT3 was developed. Using small G-Rex 10 devices allowed for successful expansion from fewer tumor fragments and reduced culture time compared to standard methods, especially for uveal melanoma.
Publications
TCRαβ/CD3 disruption enables CD3-specific antileukemic T cell immunotherapy
This paper reports the creation of anti-CD3 CAR-T cells (3CAR) using TALEN-mediated TCR disruption to avoid self-killing. G-Rex were used to scale up the production, allowing 3CAR T cells to expand 100-fold and self-enrich for the TCR-negative population.
Publications
Efficient Enrichment of Gene-Modified Primary T Cells via CCR5-Targeted Integration of Mutant Dihydrofolate Reductase
The study demonstrates a method to enrich gene-edited CD4+ T cells using methotrexate selection. G-Rex 10 were employed for the long-term expansion of lentivirus-modified T cells, facilitating the generation of large numbers of selected cells.