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3ms
Redirecting B7-H3.CAR T cells to Chemokines Expressed in Osteosarcoma Enhances Homing and Antitumor Activity in Preclinical Models. (PubMed, Clin Cancer Res)
Our patient-based pipeline identified targets for chemokine receptor modification of CAR T cells targeting OS. CXCR2 and CXCR6 expression enhanced homing and anti-OS activity of B7-H3.CAR T cells. These findings support clinical evaluation of CXCR-modified CAR T cells to improve adoptive cell therapy for OS patients.
Preclinical • Journal • CAR T-Cell Therapy
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CD276 (CD276 Molecule) • CXCR2 (Chemokine (C-X-C motif) receptor 2) • CXCR6 (C-X-C Motif Chemokine Receptor 6)
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B7-H3 CAR-T
4ms
CAR T cells redirected to B7-H3 for pediatric solid tumors: Current status and future perspectives. (PubMed, EJC Paediatr Oncol)
We identify challenges to the success of CAR T cell therapy for solid tumors including localizing to and penetrating solid tumor sites, evading the hostile tumor microenvironment, supporting T cell expansion and persistence, and avoiding intrinsic tumor resistance. We highlight strategies to overcome these challenges and enhance the effect of B7-H3-CAR T cells, including advanced CAR T cell design and incorporation of combination therapies.
Journal • CAR T-Cell Therapy
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CD276 (CD276 Molecule)
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B7-H3 CAR-T
7ms
A high-content screen of FDA approved drugs to enhance CAR T cell function: ingenol-3-angelate improves B7-H3-CAR T cell activity by upregulating B7-H3 on the target cell surface via PKCα activation. (PubMed, J Exp Clin Cancer Res)
This study demonstrates a novel high-content and high-throughput screen can identify drugs to enhance CAR T cell activity. This and other high-content technologies will pave the way to develop clinical trials implementing rational drug plus CAR T cell combinatorial therapies. Importantly, the technique could also be repurposed for an array of basic and translational research applications where drugs are needed to modulate cell surface protein expression.
FDA event • Journal • CAR T-Cell Therapy
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CD276 (CD276 Molecule) • PRKCA (Protein Kinase C Alpha)
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CD19 positive • CD276 expression
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B7-H3 CAR-T
9ms
Peptide-scFv antigen recognition domains effectively confer CAR T cell multiantigen specificity. (PubMed, Cell Rep Med)
Protein structure prediction suggests that linker length and compactness influence the functionality of the generated bispecific CARs. Thus, we present a bispecific CAR design strategy to prevent immune escape in AML that can be extended to other peptide-scFv combinations.
Journal • CAR T-Cell Therapy
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CD123 (Interleukin 3 Receptor Subunit Alpha) • HSPA5 (Heat Shock Protein Family A (Hsp70) Member 5) • IL3RA (Interleukin 3 Receptor Subunit Alpha)
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CD123 expression
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B7-H3 CAR-T
12ms
CAR T-cell design-dependent remodeling of the brain tumor-immune microenvironment modulates tumor-associated macrophages and anti-glioma activity. (PubMed, Cancer Res Commun)
Using an immunocompetent glioma model, we evaluated a panel of seven fully murine B7-H3 CARs with variations in transmembrane, costimulatory, and activation domains...Indeed, complete brain macrophage depletion using a CSF1R inhibitor abrogated CAR T-cell anti-tumor activity. In sum, our study highlights the critical role of CAR design and its modulation of the TIME in mediating the efficacy of adoptive immunotherapy for high-grade glioma.
Journal • CAR T-Cell Therapy • IO biomarker
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CD276 (CD276 Molecule) • CD28 (CD28 Molecule)
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B7-H3 CAR-T
1year
Preparation of cryopreserved chimeric antigen receptor T cells for the locoreogional delivery to the neural axis. (PubMed, Cytotherapy)
We have developed a simple thaw/wash procedure to prepare B7-H3-CAR T cells for their locoregional delivery to the neural axis. While we focus here on CAR T cells, the methods could be readily adapted to other cryopreserved immune effector cell products.
Journal • CAR T-Cell Therapy
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CD276 (CD276 Molecule)
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B7-H3 CAR-T
over1year
B7-H3-Specific Chimeric Antigen Receptor Autologous T-Cell Therapy for Pediatric Patients With Solid Tumors (3CAR) (clinicaltrials.gov)
P1, N=32, Recruiting, St. Jude Children's Research Hospital | Trial completion date: Feb 2026 --> Mar 2027 | Trial primary completion date: Mar 2025 --> Mar 2026
Trial completion date • Trial primary completion date
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CD276 (CD276 Molecule)
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CD276 expression
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cyclophosphamide • fludarabine IV • mesna • B7-H3 CAR-T
over1year
Loc3CAR: Locoregional Delivery of B7-H3-CAR T Cells for Pediatric Patients With Primary CNS Tumors (clinicaltrials.gov)
P1, N=36, Recruiting, St. Jude Children's Research Hospital | Not yet recruiting --> Recruiting
Enrollment open
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CD276 (CD276 Molecule)
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B7-H3 CAR-T
over1year
New P1 trial • CAR T-Cell Therapy
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CD276 (CD276 Molecule)
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B7-H3 CAR-T
over1year
Patient Based Selection of Receptors Driving Chemokine-Mediated Homing Enhances B7H3.CAR T Cell Efficacy Against Pediatric Osteosarcoma (ASGCT 2023)
Patient-based determination of chemokines secreted by pediatric OS identifies robust targets for chemokine receptor modification of CAR T cells. CXCR2 and CXCR6 both enhance homing of B7-H3.CAR T cells, with improved antitumor activity and evidence of reduced non-specific expansion in vivo. Optimization of these receptors with additional CARs active in OS is warranted.
Clinical • CAR T-Cell Therapy
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IFNG (Interferon, gamma) • CD276 (CD276 Molecule) • CXCL8 (Chemokine (C-X-C motif) ligand 8) • CXCL10 (Chemokine (C-X-C motif) ligand 10) • CXCL12 (C-X-C Motif Chemokine Ligand 12) • IL2 (Interleukin 2) • CCL21 (C-C Motif Chemokine Ligand 21) • CXCR2 (Chemokine (C-X-C motif) receptor 2) • CXCR6 (C-X-C Motif Chemokine Receptor 6) • CCL18 (C-C Motif Chemokine Ligand 18) • CXCL16 (C-X-C Motif Chemokine Ligand 16)
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CXCL8 expression
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B7-H3 CAR-T
over1year
CAN DASATINIB RESTING BE COMBINED WITH CXCR EXPRESSION TO IMPROVE CAR-T CELLS AGAINST OSTEOSARCOMA? (ASPHO 2023)
Objectives: To characterize endogenous and transgenic CXCR expression and efficacy of CXCR.B7H3.CAR-T cells +/- dasatinib. Endogenous and transgenic CXCR expression are unchanged by dasatinib resting. CXCR- modified CAR-T cells +dasatinib exhibit increased naïve-like phenotype, enhanced proliferation after OS spheroid engagement, and potentially improved antitumor activity in vivo. These findings support combining dasatinib resting with CXCR-mediated homing strategies.
CAR T-Cell Therapy • IO biomarker
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CD8 (cluster of differentiation 8) • CXCR4 (Chemokine (C-X-C motif) receptor 4) • IFNG (Interferon, gamma) • CD276 (CD276 Molecule) • CD4 (CD4 Molecule) • IL2 (Interleukin 2) • CXCR2 (Chemokine (C-X-C motif) receptor 2) • CXCR3 (C-X-C Motif Chemokine Receptor 3) • CXCR6 (C-X-C Motif Chemokine Receptor 6) • ACKR3 (Atypical Chemokine Receptor 3)
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CD8 expression
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dasatinib • B7-H3 CAR-T
over1year
Developing Immunocompetent Models to Evaluate B7-H3-CAR T Cells for Acute Myeloid Leukemia (ASGCT 2023)
Further work will utilize our novel AML models to study how both cellular interactions and secreted factors produced within the TME impact CAR T cell functionality. These findings will inform strategies to improve CAR T cell design and bypass potential challenges faced when generating effective CAR T cells for pediatric AML.
CAR T-Cell Therapy • IO biomarker
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KMT2A (Lysine Methyltransferase 2A) • IFNG (Interferon, gamma) • CD276 (CD276 Molecule) • NUP98 (Nucleoporin 98 And 96 Precursor 2) • KDM5A (Lysine Demethylase 5A)
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B7-H3 CAR-T
over1year
B7-H3-CAR T-cell therapy in immune-competent osteosarcoma models: Regnase-1 KO overcomes limited CAR T-cell expansion (AACR 2023)
In summary, we have established an immune-competent OS model to evaluate the effector function of B7-H3-CAR T cells and have demonstrated the advantage given by 2nd genetic modifications to enhance their antitumor activity. We are currently using this model to define mechanisms of immune resistance with the goal of further enhancing OS-redirected CAR T-cell therapy.
CAR T-Cell Therapy
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CD8 (cluster of differentiation 8) • IFNG (Interferon, gamma) • CD276 (CD276 Molecule) • CD28 (CD28 Molecule)
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B7-H3 CAR-T
over1year
B7-H3-CAR T cells for the treatment of pediatric adrenocortical carcinoma (AACR 2023)
These findings provide a strong rationale for clinically evaluating B7-H3-CAR T for pediatric patients with chemotherapy-resistant ACC. Additionally, the newly established pediatric ACC PDX models provide a valuable resource for investigating different aspects of this rare and aggressive disease.
Clinical • CAR T-Cell Therapy • IO biomarker
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TP53 (Tumor protein P53) • CD276 (CD276 Molecule) • CTNNB1 (Catenin (cadherin-associated protein), beta 1) • ATRX (ATRX Chromatin Remodeler)
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TP53 mutation • CD276 expression • ATRX deletion
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B7-H3 CAR-T
almost2years
B7-H3-Specific Chimeric Antigen Receptor Autologous T-Cell Therapy for Pediatric Patients With Solid Tumors (3CAR) (clinicaltrials.gov)
P1, N=32, Recruiting, St. Jude Children's Research Hospital | Trial completion date: Mar 2027 --> Feb 2026 | Trial primary completion date: Mar 2026 --> Mar 2025
Trial completion date • Trial primary completion date
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CD276 (CD276 Molecule)
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CD276 expression
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cyclophosphamide • fludarabine IV • mesna • B7-H3 CAR-T
over2years
B7-H3-Specific Chimeric Antigen Receptor Autologous T-Cell Therapy for Pediatric Patients With Solid Tumors (3CAR) (clinicaltrials.gov)
P1, N=32, Recruiting, St. Jude Children's Research Hospital | Not yet recruiting --> Recruiting
Enrollment open
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CD276 (CD276 Molecule)
|
CD276 expression
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cyclophosphamide • fludarabine IV • mesna • B7-H3 CAR-T