@article{JungwirthYuMoustafaetal.2019, author = {Jungwirth, Gerhard and Yu, Tao and Moustafa, Mahmoud and Rapp, Carmen and Warta, Rolf and Jungk, Christine and Sahm, Felix and Dettling, Steffen and Zweckberger, Klaus and Lamszus, Katrin and Senft, Christian and Loehr, Mario and Keßler, Almuth F. and Ketter, Ralf and Westphal, Manfred and Debus, Juergen and von Deimling, Andreas and Simon, Matthias and Unterberg, Andreas and Abdollahi, Amir and Herold-Mende, Christel}, title = {Identification of KIF11 as a Novel Target in Meningioma}, series = {Cancers}, volume = {11}, journal = {Cancers}, number = {4}, issn = {2072-6694}, doi = {10.3390/cancers11040545}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-197402}, year = {2019}, abstract = {Kinesins play an important role in many physiological functions including intracellular vesicle transport and mitosis. The emerging role of kinesins in different cancers led us to investigate the expression and functional role of kinesins in meningioma. Therefore, we re-analyzed our previous microarray dataset of benign, atypical, and anaplastic meningiomas (n = 62) and got evidence for differential expression of five kinesins (KIFC1, KIF4A, KIF11, KIF14 and KIF20A). Further validation in an extended study sample (n = 208) revealed a significant upregulation of these genes in WHO°I to °III meningiomas (WHO°I n = 61, WHO°II n = 88, and WHO°III n = 59), which was most pronounced in clinically more aggressive tumors of the same WHO grade. Immunohistochemical staining confirmed a WHO grade-associated upregulated protein expression in meningioma tissues. Furthermore, high mRNA expression levels of KIFC1, KIF11, KIF14 and KIF20A were associated with shorter progression-free survival. On a functional level, knockdown of kinesins in Ben-Men-1 cells and in the newly established anaplastic meningioma cell line NCH93 resulted in a significantly inhibited tumor cell proliferation upon siRNA-mediated downregulation of KIF11 in both cell lines by up to 95\% and 71\%, respectively. Taken together, in this study we were able to identify the prognostic and functional role of several kinesin family members of which KIF11 exhibits the most promising properties as a novel prognostic marker and therapeutic target, which may offer new treatment options for aggressive meningiomas.}, language = {en} } @article{GinzkeyEickerMargetetal.2013, author = {Ginzkey, Christian and Eicker, Sven and Marget, Matthias and Krause, J{\"o}rg and Brecht, Stefan and Westphal, Manfred and Hugo, Heinz-Hermann and Mehdorn, Maximilian and Steinmann, J{\"o}rg and Hamel, Wolfgang}, title = {Incomplete tumour control following DNA vaccination against rat gliomas expressing a model antigen}, series = {Acta Neurochirurgica}, volume = {155}, journal = {Acta Neurochirurgica}, number = {1}, doi = {10.1007/s00701-012-1526-7}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-126775}, pages = {51-59}, year = {2013}, abstract = {Background Vaccination against tumour-associated antigens is one approach to elicit anti-tumour responses. We investigated the effect of polynucleotide (DNA) vaccination using a model antigen (E. coli lacZ) in a syngeneic gliosarcoma model (9L). Methods Fisher 344 rats were vaccinated thrice by intramuscular injection of a lacZ-encoding or a control plasmid in weekly intervals. One week after the last vaccination, lacZ-expressing 9L cells were implanted into the striatum. Results After 3 weeks, in lacZ-vaccinated animals the tumours were significantly smaller than in control-vaccinated animals. In cytotoxic T cell assays lysis rates of >50 \% could only be observed in a few of the lacZ-vaccinated animals. This response was directed against lacZ-expressing and parental 9L cells but not against syngeneic MADB 106 adenocarcinoma cells. In Elispot assays interferon-γ production was observed upon stimulation with 9LlacZ and 9L wild-type but not MADB 106 cells. This response was higher for lacZ-immunized animals. All animals revealed dense infiltrates with CD8+ lymphocytes and, to a lesser extent, with NK cells. CD25-staining indicated cells possibly associated with the maintenance of peripheral tolerance to self-antigens. All tumours were densely infiltrated by microglia consisting mostly of ramified cells. Only focal accumulation of macrophage-like cells expressing ED1, a marker for phagocytic activity, was observed. Conclusion Prophylactic DNA vaccination resulted in effective but incomplete suppression of brain tumour formation. Mechanisms other than cytotoxic T cell responses as measured in the generally used in vitro assays appear to play a role in tumour suppression.}, language = {en} }