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Publications

Expansion of Human and Murine Hematopoietic Stem and Progenitor Cells Ex Vivo without Genetic Modification Using MYC and Bcl-2 Fusion Proteins

This study reports the expansion of HSPCs using Tat-MYC and Tat-Bcl-2 fusion proteins. G-Rex 10 devices were used to expand CD34+ cells from cord blood, mobilized blood, and bone marrow. The expanded cells retained long-term repopulating activity and differentiated into multiple lineages in vivo.
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Publications

Optimizing the production of suspension cells using the G-Rex “M” series

This study defines optimized parameters for the G-Rex 'M' series using K562 cells. It demonstrates that 1L of medium with optimal seeding allows 100-fold expansion in 10 days in the G-Rex 100M. The platform showed linear scalability from 5 to 500 cm2 and validated glucose measurement for cell quantification.
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Publications

Kinetics of Tumor Destruction by Chimeric Antigen Receptor-modified T Cells

This research investigates the kinetics of tumor destruction by CAR T cells targeting MUC1 and PSCA. G-Rex 100M devices were used to expand the CAR-modified T cells. The study found that dual targeting improved efficacy but antigen intensity influenced killing; epigenetic modulation enhanced tumor susceptibility.
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Publications

Large-scale myeloid dendritic cells generation from umbilical CD34+ cells using G-rex

This conference paper reports a method for large-scale generation of myeloid dendritic cells (DCs) from cord blood CD34+ cells using G-Rex10. The G-Rex system yielded over 1.5 billion DCs, significantly outperforming conventional culture plates, and produced DCs capable of inducing Th1 responses.
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Publications

Generation of tumor antigen-specific T cell lines from pediatric patients with acute lymphoblastic leukemia – implications for immunotherapy

This study demonstrates the generation of T-cell lines targeting WT1, Survivin, MAGE-A3, and PRAME from pediatric ALL patients using autologous DCs and PHA-blasts. The cells showed specific anti-leukemic activity. G-Rex are referenced as a strategy for scaling up to clinical cell numbers.
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Publications

Antigen Presenting Cell-Mediated Expansion of Human Umbilical Cord Blood Yields Log-Scale Expansion of Natural Killer Cells with Anti-Myeloma Activity

This study utilized G-Rex to expand NK cells from cord blood using artificial antigen presenting cells (aAPCs). The protocol achieved a mean 2389-fold expansion of high-purity NK cells in 14 days. Expanded cells demonstrated significant in vitro and in vivo cytotoxicity against multiple myeloma.
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Publications

Safety and clinical efficacy of rapidly-generated trivirus-directed T cells as treatment for adenovirus, EBV, and CMV infections after allogeneic hematopoietic stem cell transplant

This study reports a simplified method to generate T cells targeting EBV, CMV, and Adenovirus using nucleofected dendritic cells and G-Rex devices. The 10-day G-Rex protocol produced clinically relevant cell numbers. Infused cells were safe and effective against active viral infections in HSCT recipients.
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Publications

Improved Homing to Bone Marrow, Spleen and Lung of Adoptively Infused NK Cells Expanded Ex Vivo with the Small Molecule Nicotinamide Using Feeder-Free Conditions

This study demonstrates that nicotinamide (NAM) enhances the homing and retention of NK cells in bone marrow, spleen, and lung. NK cells were expanded in G-Rex devices under feeder-free conditions with IL-2 or IL-15. The G-Rex platform supported large-scale expansion, yielding high-purity NK cells.
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Publications

Randomized Selection Design Trial Evaluating CD8+-Enriched Versus Unselected Tumor-Infiltrating Lymphocytes for Adoptive Cell Therapy for Patients With Melanoma

Compares unselected young TILs vs CD8+-enriched TILs. Mentions that G-Rex were optimized for TIL therapy and introduced for clinical use. The study used (WAVE and G-Rex) for high-density T-cell expansion, facilitating rapid accrual
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Publications

Robust and cost effective expansion of human regulatory T cells highly functional in a xenograft model of graft-versus-host disease

Describes a protocol for expanding nTregs using G-Rex10 and G-Rex100 devices. The method yielded >10^9 Tregs in 21 days with high purity and suppressive function. G-Rex promoted robust expansion (over 600-fold) compared to 24-well plates (5-6 fold) and maintained telomere length
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Publications

Adoptive Transfer of Tumor-Infiltrating Lymphocytes in Patients with Metastatic Melanoma: Intent-to-Treat Analysis and Efficacy after Failure to Prior Immunotherapies

Clinical trial results for TIL therapy in melanoma. Mentions using 'gas-permeable bags or GRex ' for the Rapid Expansion Procedure (REP). Notes that G-Rex allow large-scale expansion to treatment levels (10^10 - 10^11 cells)
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Publications

SOP: D03.32.21 EXPANSION OF EBV- OR ANTIGEN-SPECIFIC CYTOTOXIC T LYMPHOCYTES (CTL)

SOP for expanding CTLs. Detailed instructions for using G-Rex40 and G-Rex500. Describes transfer of cells to G-Rex, adding media and IL-2, feeding schedules (removing half media), and splitting cells if density is high
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