Tom Van Meerten

Tom Van Meerten
University of Groningen | RUG · Department of Experimental Hematology

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15
Publications
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1,227
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Publications

Publications (15)
Article
Full-text available
Human IgG1 type I CD20 Abs, such as rituximab and ofatumumab (OFA), efficiently induce complement-dependent cytotoxicity (CDC) of CD20+ B cells by binding of C1 to hexamerized Fc domains. Unexpectedly, we found that type I CD20 Ab F(ab′)2 fragments, as well as C1q-binding–deficient IgG mutants, retained an ability to induce CDC, albeit with lower e...
Article
Human IgG1 type I CD20 Abs, such as rituximab and ofatumumab (OFA), efficiently induce complement-dependent cytotoxicity (CDC) of CD20(+) B cells by binding of C1 to hexamerized Fc domains. Unexpectedly, we found that type I CD20 Ab F(ab')2 fragments, as well as C1q-binding-deficient IgG mutants, retained an ability to induce CDC, albeit with lower...
Article
Full-text available
The effectiveness of chimeric Ag receptor (CAR)-transduced T (CAR-T) cells has been attributed to supraphysiological signaling through CARs. Second- and later-generation CARs simultaneously transmit costimulatory signals with CD3ζ signals upon ligation, but may lead to severe adverse effects owing to the recognition of minimal Ag expression outside...
Article
The anti-CD20 monoclonal antibody rituximab has revolutionized the treatment of patients with follicular B-cell lymphoma. With the combination of chemotherapy and rituximab the overall survival rate has increased with approximately 30%. Unfortunately, there is resistance to rituximab with relapse of the disease in about 60% of the patients during t...
Article
Full-text available
Incorporation of the chimeric CD20 monoclonal antibody rituximab in the treatment schedule of patients with non-Hodgkin's lymphoma has significantly improved outcome. Despite this success, about half of the patients do not respond to treatment or suffer from a relapse and additional therapy is required. A low CD20-expression level may in part be re...
Article
Targeting the CD20 antigen on B lymphocytes with the monoclonal antibody (MoAb) rituximab has greatly improved the outcome of patients with B-cell malignancies. Despite the success of rituximab, resistance occurs in about half of the patients, resulting in non-response to treatment or early relapse with the original disease. A better understanding...
Article
Targeting the CD20 antigen on B lymphocytes with the monoclonal antibody rituximab has greatly improved the outcome of patients with B-cell malignancies. Despite the success of rituximab, resistance occurs in about half of the patients, resulting in non-response to treatment or early relapse of the original disease. A better understanding of the me...
Article
Leukemia and lymphoma are generally treated by high-dose chemotherapy and/or radiotherapy. In certain patients, the treatment is consolidated with a transplantation of donor stem cells and immune cells (allogeneic stem cell transplantation). Treatment with chemotherapy and/or radiotherapy is limited by the damage that is afflicted to the healthy ti...
Article
Full-text available
The use of the CD20-specific antibody rituximab has greatly improved the response to treatment of CD20+ follicular lymphoma. Despite the success of rituximab, resistance has been reported and prognostic markers to predict individual response are lacking. The level of CD20 expression on tumors has been related to response, but results of several stu...
Article
Full-text available
We have previously defined a panel of fully human CD20 mAb. Most of these were unexpectedly efficient in their ability to recruit C1q to the surface of CD20-positive cells and mediate tumor lysis via activation of the classical pathway of complement. This complement-dependent cytotoxicity (CDC) potency appeared to relate to the unusually slow off-r...
Article
Adoptive transfer of T lymphocytes is an attractive strategy for many experimental treatment strategies for cancer. Unfortunately, manipulated T cells could be responsible for serious adverse events. Retroviral CD20-transduced T cells may be able to control these unwanted effects. CD20-positive cells are sensitive to rituximab (RTX), a monoclonal a...
Article
Full-text available
Adoptive transfer of T cells is frequently associated with unwanted side effects. In order to tackle these effects one could introduce a safety switch into the cells that permits their selective in vivo elimination. The human CD20 gene in combination with CD20 antibodies was recently proposed as a novel safety switch. In such a system, T cells may...

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