Institution
German Red Cross
Healthcare•Berlin, Germany•
About: German Red Cross is a healthcare organization based out in Berlin, Germany. It is known for research contribution in the topics: Transplantation & Mesenchymal stem cell. The organization has 653 authors who have published 1146 publications receiving 40111 citations. The organization is also known as: Deutsches Rotes Kreuz & DRK.
Topics: Transplantation, Mesenchymal stem cell, Population, Stem cell, Antigen
Papers published on a yearly basis
Papers
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TL;DR: Findings indicate that the expression of the AF4.MLL fusion protein is capable of inducing acute lymphoblastic leukemia even in the absence of the MLL, suggesting that t(4;11) leukemia is based on 2 oncoproteins providing an explanation for the very early onset of disease in humans.
144 citations
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TL;DR: Effects of the GB tumor microenvironment on NK-cell functionality, early treatment attempts with ex vivo activated NK cells, and relevant CAR target antigens validated with CAR-T cells are discussed.
Abstract: Glioblastoma (GB) is the most common and aggressive primary brain tumor in adults and currently incurable. Despite multimodal treatment regimens, median survival in unselected patient cohorts is <1 year, and recurrence remains almost inevitable. Escape from immune surveillance is thought to contribute to the development and progression of GB. While GB tumors are frequently infiltrated by natural killer (NK) cells, these are actively suppressed by the GB cells and the GB tumor microenvironment. Nevertheless, ex vivo activation with cytokines can restore cytolytic activity of NK cells against GB, indicating that NK cells have potential for adoptive immunotherapy of GB if potent cytotoxicity can be maintained in vivo. NK cells contribute to cancer immune surveillance not only by their direct natural cytotoxicity which is triggered rapidly upon stimulation through germline-encoded cell surface receptors, but also by modulating T-cell mediated antitumor immune responses through maintaining the quality of dendritic cells and enhancing the presentation of tumor antigens. Furthermore, similar to T cells, specific recognition and elimination of cancer cells by NK cells can be markedly enhanced through expression of chimeric antigen receptors (CARs), which provides an opportunity to generate NK-cell therapeutics of defined specificity for cancer immunotherapy. Here, we discuss effects of the GB tumor microenvironment on NK-cell functionality, summarize early treatment attempts with ex vivo activated NK cells, and describe relevant CAR target antigens validated with CAR-T cells. We then outline preclinical approaches that employ CAR-NK cells for GB immunotherapy, and give an overview on the ongoing clinical development of ErbB2 (HER2)-specific CAR-NK cells currently applied in a phase I clinical trial in glioblastoma patients.
140 citations
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TL;DR: The use of fetal bovine serum (FBS) as a cell culture supplement is discouraged by regulatory authorities to limit the risk of zoonoses and xenogeneic immune reactions in the transplanted host.
Abstract: The use of fetal bovine serum (FBS) as a cell culture supplement is discouraged by regulatory authorities to limit the risk of zoonoses and xenogeneic immune reactions in the transplanted host. Additionally, FBS production came under scrutiny due to animal welfare concerns. Platelet derivatives have been proposed as FBS substitutes for the ex-vivo expansion of mesenchymal stem/stromal cells (MSCs) since platelet-derived growth factors can promote MSC ex-vivo expansion. Platelet-derived growth factors are present in platelet lysate (PL) obtained after repeated freezing–thawing cycles of the platelet-rich plasma or by applying physiological stimuli such as thrombin or CaCl2. PL-expanded MSCs have been used already in the clinic, taking advantage of their faster proliferation compared with FBS-expanded preparations. Should PL be applied to other biopharmaceutical products, its demand is likely to increase dramatically. The use of fresh platelet units for the production of PL raises concerns due to limited availability of platelet donors. Expired units might represent an alternative, but further data are needed to define safety, including pathogen reduction, and functionality of the obtained PL. In addition, relevant questions concerning the definition of PL release criteria, including concentration ranges of specific growth factors in PL batches for various clinical indications, also need to be addressed. We are still far from a common definition of PL and standardized PL manufacture due to our limited knowledge of the mechanisms that mediate PL-promoting cell growth. Here, we concisely discuss aspects of PL as MSC culture supplement as a preliminary step towards an agreed definition of the required characteristics of PL for the requirements of manufacturers and users.
139 citations
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TL;DR: The data highlight a complex association between circulating inflammatory mediators, Mo‐MDSCs and the clinical outcome as well as suggest that their levels in patients with advanced melanoma are of important prognostic value allowing the identification of those with high risk of disease progression.
Abstract: Chronic inflammation is considered to be one of the hallmarks for tumor initiation and progression. Moreover, a long-term production and accumulation of inflammatory factors lead to a local and systemic immunosuppression associated with cancer progression. However, the correlation between inflammatory mediators, immunosuppressive cells and the clinical outcome of malignant melanoma patients was poorly investigated. In this study, we performed a complex analysis of various inflammatory factors, myeloid-derived suppressor cells (MDSCs) and regulatory T cells (Tregs) in the peripheral blood of patients suffering from malignant melanoma of different stages. We demonstrated that levels of serum IL-1β, IFN-γ and CXCL10 were significantly increased in advanced melanoma patients. In addition, these factors were found to be associated with an increased frequency of MDSCs and Tregs as compared to age- and gender-matched healthy donors. Importantly, advanced melanoma patients with signs of progression displayed markedly elevated concentrations of IL-1β and CXCL10 as compared to patients with stable disease. Moreover, an enrichment of circulating monocytic (Mo)-MDSCs significantly correlated with a decreased progression free survival of these patients. Our data highlight a complex association between circulating inflammatory mediators, Mo-MDSCs and the clinical outcome as well as suggest that their levels in patients with advanced melanoma are of important prognostic value allowing the identification of those with high risk of disease progression.
139 citations
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TL;DR: There was no difference in survival or in the incidence or severity of acute graft-versus-host disease regardless of exposure to alkylating agents, however, ARTEMIS-deficient patients had a significantly higher occurrence of infections in long-term follow-up.
139 citations
Authors
Showing all 658 results
Name | H-index | Papers | Citations |
---|---|---|---|
Johannes Oldenburg | 72 | 583 | 18790 |
Bodo Niggemann | 71 | 279 | 19475 |
Norbert Weissmann | 71 | 384 | 21187 |
Hubert Schrezenmeier | 69 | 360 | 16215 |
Triantafyllos Chavakis | 65 | 242 | 13247 |
Klaus Schwarz | 58 | 209 | 13407 |
Willy A. Flegel | 50 | 233 | 6742 |
Rainer M. Bohle | 49 | 235 | 6923 |
Torsten Tonn | 48 | 151 | 11328 |
Daniel Ricklin | 46 | 144 | 10713 |
Erhard Seifried | 44 | 254 | 7967 |
Pamela S. Becker | 42 | 257 | 6256 |
Karen Bieback | 41 | 135 | 10010 |
Halvard Bonig | 41 | 216 | 4828 |
Julia Kzhyshkowska | 40 | 126 | 5963 |