CAR-T CELL THERAPY
CAR T-cell therapy makes use of the patients’ own immune system to combat their disease. T-cells are genetically engineered to express a chimeric antigen receptor (CAR) that allows for the detection and destruction of tumor cells. However, currently FDA- and EMA-approved CAR T-cells fail in half of the patients mainly due to the loss of the target antigen, so called antigen escape, as well as the tumor-supporting and immunosuppressive tumor microenvironment (TME).

CXCR5 CAR-T CELLS
Our approach to overcome those main drivers for relapse is the introduction of the chemokine receptor CXCR5 as novel target antigen with high potential to avoid antigen escape. Additionally, CXCR5 is expressed on tumorigenic B-cells and on T- follicular helper (TFH) cells in the TME. This enables a unique dual functionality by tackling the tumor and its supportive microenvironment to achieve deep and long-lasting tumor cell elimination.

Scientific Publications
2025
Targeting MYCN upregulates LACAM tumor antigen in MYCN-dysregulated neuroblastoma to increase CAR T cell efficacy.
Authors
Grunewald L, Andersch L, Helmsauer K, Schwiebert S, Klaus A, Henssen AG, Straka T, Lodrini M, Wicha SG, Fuchs S, Hertwig F, Westermann F, Vitali A, Caramel C, Büchel G, Eilers M, Astrahantseff K, Eggert A, Höpken UE, Schulte JH, Blankenstein T, Anders K, Künkele A
Journal
Pharmacol Res.
Citation
Front Immunol 15: 1383136
Safety, tolerability and early efficacy of mdc-CAR-BCMA001 – a high affinity BCMA targeting CAR T-cell therapy in patients with multiple myeloma and diffuse large B-cell lymphoma
Authors
Jingting Luan, Brigitte Neuber, Carina Wenzel, Malte Von Bonin, Katharina Epp, Raphael Teipel, Jonas Schadt, Angela Hueckelhoven-Krauss, Korinna Jöhrens, Sylvia Herold, Martin Bornhaeuser, Carsten Mueller-Tidow, Anita Schmitt, Armin Rehm, Uta Hoepken, Michael Schmitt, Martin Wermke
Journal
Blood
Citation
Blood (2025) 146 (Supplement 1): 2388.
Bispecific BAFF-R/BCMA CAR T cells control growth of heterogeneous plasma cells in multiple myeloma
Authors
Agnese Fiori, Karin Zimmermann, Anna Li, Jörg Westermann, Ioannis Anagnostopoulos, Lutz Menzel, Mario Bunse, Henry Erdlei, Jeyan Jayarajan, Florian Grünschläger, Juan Pablo Ortiz-Aguirre, Simon Haas, Uwe-Jens Teßmann, Jens Freitag, Andreas Rosenwald, Larry Kwak, Xiuli Wang, Zhenyuan Dong, Soungchul Cha, John Reiser, Eigen Peralta, Bahram Valamehr, Jan Krönke, Uta E. Höpken,Armin Rehm
Journal
Molecular Therapy
2024
CXCR4 has a dual role in improving the efficacy of BCMA redirected CAR-NK cells in multiple myeloma.
Authors
Moles MW, Erdlei H, Menzel L, Massaro M, Fiori A, Bunse M, Schrinpf M, Gerlach K, Gudipati V, Reiser J, Mathavan K, Goodrich J, Huppa JB, Kroenke J, Valamehr B, Höpken UE, Rehm A (2024).
Journal
Front Immunol.
CD19-targeting CAR T cells protect from ANCA-induced acute kidney injury.
Authors
Lodka D, Zschummel M, Bunse M, Rousselle A, Sonnemann J, Kettritz R, Höpken UE*, Schreiber A*
Journal
Ann Rheum Dis.
In vitro functionality and endurance of GMP-compliant point-of-care BCMA.CAR-T cells at different timepoints of cryopreservation.
Authors
Jiang G, Neuber B, Hückelhoven-Krauss A, Höpken U, Ding Y, Sedloev D, Wang L, Reichmann A, Eberhardt F, Wermke M, Rehm A, Müller-Tidow A, Schmitt A, Schmitt M
Journal
Int J Mol Sci.
2022
Quadruple gene-engineered natural killer cells enable multi-antigen targeting for durable antitumor activity against multiple myeloma.
Authors
Cichocki F, Bjordahl R, Goodridge JP, Mahmood S, Gaidarova S, Abujarour R, Davis ZB, Merino A, Tuininga K, Wang H, Kumar A, Groff B, Witty A, Bonello G, Huffman J, Dailey T, Lee TT, Malmberg K-J, Walcheck B, Höpken U, Rehm A, Valamehr B, Miller JS
Journal
Nature Communications.
EBAG9-silencing exerts an immune checkpoint function without aggravating adverse effects.
Authors
Wirges A, Bunse M, Joedicke JJ, Blanc E, Gudipati V, Moles MW, Shiku H, Beule D, Huppa JB, Höpken UE, Rehm A
Journal
Molecular Therapy.
EBAG9 controls CD8+ T cell memory formation responding to non-infectious stimuli.
Authors
Rehm A, Wirges A, Hoser D, Fischer C, Herda S, Gerlach K, Sauer S, Willimsky G, Höpken UE
Journal
JCI Insight.
Pharmacological interventions enhance virus-free geenaration of TRAC-replaced CAR T cells.
Authors
Kath J, Weijie D, Pruene A, Braun T, Thommandru B, Turk R, Sturgeon ML, Kurgan GL, Amini L, Stein M, Zittel, Martini S, Ostendorf L, Wilhelm A, Akyüz L, Rehm A, Höpken UE, Pruß A, Künkele A, Jacobi AM, Volk H-D, Schmueck-Heneresse M, Stripecke R, Reinke P, Wagner DL
Journal
Mol Ther Methods Clin Dev.
Comparison of FACS and PCR for detection of BCMA-CAR-T cells.
Authors
Reichmann A, Kunz A, Joedicke JJ, Höpken UE, Keib A, Neuber B, Sedloev D, Wang L, Jiang G, Hückelhoven-Krauss A, Eberhardt F, Müller-Tidow C, Wermke M, Rehm A, Schmitt M, Schmitt A
Journal
Int. J. Mol. Sci.
2021
Accelerating clinical scale production of BCMA CAR T cells with defined maturation stages.
Authors
Joedicke JJ, Großkinsky U, Gerlach K, Künkele A, Höpken UE*, Rehm A*
Journal
Mol Ther Methods Clin Dev
CD28 co-stimulus achieves superior CAR T cell effector function against solid tumors than 4-1BB co-stimulus.
Authors
Textor A, Grunewald L, Anders K, Klaus A, Schwiebert S, Winkler A, Stecklum M, Rolff J, Henssen AG, Höpken UE, Eggert A, Schulte JH, Jensen MC, Blankenstein T, Künkele A
Journal
Cancers
CXCR5 CAR-T cells simultaneously target B cell Non-Hodgkin’s lymphoma and tumor-supportive follicular T helper cells.
Authors
Bunse B, Pfeilschifter J, Bluhm J, Zschummel M, Joedicke JJ, Wirges A, Stark H, Kretschmer V, Chmielewski M, Uckert W, Abken H, Westermann J, Rehm A*, and Höpken UE*
Journal
Nature Communications.
2018
CAR T cells with enhanced sensitivity to B cell maturation antigen for the targeting of B cell non-Hodgkin’s lymphoma and multiple myeloma.
Authors
Bluhm J, Kieback E, Marino SF, Oden F, Westermann J, Chmielewski M, Abken H, Uckert W, Höpken UE*, Rehm A*
Journal
Molecular Therapy
2015
Potent anti-tumor response by targeting B cell maturation antigen (BCMA) in a mouse model of multiple myeloma.
2014
Access to follicular dendritic cells is a pivotal step in murine chronic lymphocytic leukemia B cell activation and proliferation.
2010
The homeostatic chemokine receptor CXCR5 is required for mucosa-associated lymphoid neogenesis in chronic Helicobacter pylori-induced inflammation.
2009
The tumor-associated antigen EBAG9 negatively regulates the cytolytic capacity of mouse CD8+ T cell.
2007
CXCR5-dependent antigen-specific lymphoid neo-organogenesis in a chronic model of rheumatoid arthritis.
2006
Up-regulation of the chemokine receptor CCR7 in classical but not in lymphocyte predominant Hodgkin disease correlates with distinct dissemination of neoplastic cells in lymphoid organs.
2022
Generation of Redirected Engineered Human Chimeric Antigen Receptor (CAR) T Cells.
2020
Angiogenesis in lymph nodes is a critical regulator of immune response and lymphoma growth.
2019
Targeting the Tumor Microenvironment of Leukemias and Lymphomas.
2012
Homeostatic chemokines guide lymphoma cells to tumor growth-promoting niches within secondary lymphoid organs.
NEWS
- Exciting news: CARTemis Therapeutics will join forces with TQ Therapeutics Dezember 18, 2025
- CARTemis is a new member of BIO Deutschland August 30, 2025
- Women TechEU 2024 | Winner of the 1st Call | Anthea Wirges Oktober 30, 2024
- Starting up with highly promising immunotherapies September 3, 2024
- €4.6 million for a novel CAR T-cell therapy Mai 23, 2023

