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Publications
Therapeutic bispecific T-cell engager antibody targeting the intracellular oncoprotein WT1
This study describes a BiTE derived from a TCR-mimic antibody against WT1. It induced T-cell cytotoxicity against WT1+ tumors and epitope spreading. Transduced EBV-specific T lymphocytes used in in vivo tracking studies were cultured in G-Rex®.
Publications
Go-CART: an animal-free system for the assessment of CAR T cell function
The authors developed Go-CART, a six-chambered device to assess CAR T cell function without animals. The device features a gas-permeable base, allowing prolonged T cell-tumor interaction (>2 weeks) without medium replenishment, similar to G-Rex® technology (co-author John Wilson is from Wilson Wolf).
Publications
Cancer Immunotherapy Based on Mutation-Specific CD4+ T Cells in a Patient with Epithelial Cancer
This study demonstrates that the immune system can mount a mutation-specific Th1 response against epithelial cancer. Adoptive transfer of enriched mutation-specific CD4+ TILs led to tumor regression. The provided excerpts do not explicitly mention the use of G-Rex® devices.
Publications
Anti-leukemic potency of piggyBac-mediated CD19-specific T cells against refractory Philadelphia chromosome–positive acute lymphoblastic leukemia
This study generated CD19-specific CAR T cells using the piggyBac transposon system and expanded them in G-Rex® 10 devices under serum-free conditions. This protocol produced clinically relevant numbers of CAR T cells that were effective against TKI-resistant Ph+ ALL cells.
Publications
Interleukin-7 mediates selective expansion of tumor-redirected cytotoxic T lymphocytes without enhancement of regulatory T-cell inhibition
This study demonstrates that CAR-redirected EBV-CTLs engineered to express IL-7Ra can be selectively expanded by IL-7 in the presence of Tregs. G-Rex® were used to generate the expanded Tregs used in the suppression assays. This strategy enhances antitumor activity.
Publications
Adoptive transfer of rapidly-generated multivirus-specific T cells to treat Adv, EBV, CMV, BK and HHV6 infections of HSCT recipients
This abstract reports the clinical use of rapidly generated pentavalent virus-specific T cells expanded in G-Rex® devices. The single-stimulation G-Rex® protocol produced sufficient cells in 10 days to safely and effectively treat drug-refractory EBV, CMV, Adv, BK, and HHV6 infections in HSCT patients.
Publications
Expansion and Homing of Adoptively Transferred Human NK Cells in Immunodeficient Mice Varies with Product Preparation and In Vivo Cytokine Administration: Implications for Clinical Therapy
This study compared fresh activated NK cells vs. ex vivo expanded NK cells (Ex-NK) produced in G-Rex® devices. Ex-NK cells showed distinct homing to bone marrow and higher cytokine dependence (IL-15) compared to fresh cells. The study highlights how manufacturing methods influence in vivo behavior.
Publications
Towards immunotherapy with redirected T cells in a large animal model: Ex vivo activation, expansion, and genetic modification of canine T cells
This study developed a protocol for generating canine CAR T cells targeting HER2. G-Rex® culture devices were used to expand the activated canine T cells, achieving approximately 100-fold expansion in 8 days. The cells demonstrated antigen-specific cytotoxicity against canine osteosarcoma.
Publications
Reversal of Tumor Immune Inhibition Using a Chimeric Cytokine Receptor
This study engineered EBV-specific T cells with a chimeric IL4/7 receptor to convert inhibitory IL4 signals into stimulatory IL7 signals. G-Rex® were utilized to maintain the EBV-LCL feeder cells used for T cell stimulation. The modified cells showed enhanced antitumor activity in IL4-rich environments.
Publications
Clinical Grade Purification and Expansion of Natural Killer Cells
This review discusses methods for clinical-grade NK cell expansion. It highlights the optimization of NK cell expansion in G-Rex® using K562-mbIL15-41BBL feeder cells, achieving high yields (up to 5x10^8 cells per G-Rex®100) with reduced handling compared to bags.
Publications
Human Islet Viability and Function Is Maintained During High-density Shipment in Silicone Rubber Membrane Vessels
This study evaluates shipping human islets in high density using silicone rubber membrane (SRM) vessels (G-Rex®). The method maintained islet viability and function comparable to low-density controls, allowing an entire clinical islet isolation to be shipped in a single vessel.
Publications
Human natural regulatory T cells subsets: Functional characterization and T cell receptor repertoire analysis
This dissertation analyzes human Treg subsets and their TCR repertoires. It demonstrates that expanding Tregs in G-Rex®10 devices with rapamycin enhances expansion (at least 50-fold) compared to plates, while maintaining FoxP3 expression and suppressive function, facilitating clinical translation.