Pukrop, Tobias

[["dc.bibliographiccitation.artnumber","135"],["dc.bibliographiccitation.journal","Frontiers in Oncology"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Bayerlová, Michaela"],["dc.contributor.author","Menck, Kerstin"],["dc.contributor.author","Klemm, Florian"],["dc.contributor.author","Wolff, Alexander"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Binder, Claudia"],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Bleckmann, Annalen"],["dc.date.accessioned","2019-07-09T11:43:27Z"],["dc.date.available","2019-07-09T11:43:27Z"],["dc.date.issued","2017"],["dc.description.abstract","Breast cancer is a heterogeneous disease and has been classified into five molecular subtypes based on gene expression profiles. Signaling processes linked to different breast cancer molecular subtypes and different clinical outcomes are still poorly understood. Aberrant regulation of Wnt signaling has been implicated in breast cancer progression. In particular Ror1/2 receptors and several other members of the non-canonical Wnt signaling pathway were associated with aggressive breast cancer behavior. However, Wnt signals are mediated via multiple complex pathways, and it is clinically important to determine which particular Wnt cascades, including their domains and targets, are deregulated in poor prognosis breast cancer. To investigate activation and outcome of the Ror2-dependent non-canonical Wnt signaling pathway, we overexpressed the Ror2 receptor in MCF-7 and MDA-MB231 breast cancer cells, stimulated the cells with its ligand Wnt5a, and we knocked-down Ror1 in MDA-MB231 cells. We measured the invasive capacity of perturbed cells to assess phenotypic changes, and mRNA was profiled to quantify gene expression changes. Differentially expressed genes were integrated into a literature-based non-canonical Wnt signaling network. The results were further used in the analysis of an independent dataset of breast cancer patients with metastasis-free survival annotation. Overexpression of the Ror2 receptor, stimulation with Wnt5a, as well as the combination of both perturbations enhanced invasiveness of MCF-7 cells. The expression-responsive targets of Ror2 overexpression in MCF-7 induced a Ror2/Wnt module of the non-canonical Wnt signaling pathway. These targets alter regulation of other pathways involved in cell remodeling processing and cell metabolism. Furthermore, the genes of the Ror2/Wnt module were assessed as a gene signature in patient gene expression data and showed an association with clinical outcome. In summary, results of this study indicate a role of a newly defined Ror2/Wnt module in breast cancer progression and present a link between Ror2 expression and increased cell invasiveness."],["dc.identifier.doi","10.3389/fonc.2017.00135"],["dc.identifier.pmid","28695110"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14538"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58892"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","2234-943X"],["dc.relation.issn","2234-943X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","610"],["dc.title","Ror2 Signaling and Its Relevance in Breast Cancer Progression."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","471"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Clinical & Experimental Metastasis"],["dc.bibliographiccitation.lastpage","482"],["dc.bibliographiccitation.volume","30"],["dc.contributor.author","Bleckmann, Annalen"],["dc.contributor.author","Siam, Laila"],["dc.contributor.author","Klemm, Florian"],["dc.contributor.author","Rietkoetter, Eva"],["dc.contributor.author","Wegner, Christiane"],["dc.contributor.author","Kramer, Franz-Josef"],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Binder, Claudia"],["dc.contributor.author","Stadelmann, Chr."],["dc.contributor.author","Pukrop, Tobias"],["dc.date.accessioned","2018-11-07T09:26:31Z"],["dc.date.available","2018-11-07T09:26:31Z"],["dc.date.issued","2013"],["dc.description.abstract","An essential function of the transcription factors LEF1/TCF4 in cerebral metastases of lung adenocarcinomas has been described in mouse models, suggesting a WNT/beta-catenin effect as potential mechanism. Their role in humans is still unclear, thus we analyzed LEF1, TCF4, beta-catenin, and early stage prognostic markers in 25 adenocarcinoma brain metastases using immunohistochemistry (IHC). IHC revealed nuclear TCF4 in all adenocarcinoma samples, whereas only 36 % depicted nuclear LEF1 and nuclear beta-catenin signals. Samples with nuclear LEF1 as well as high TCF4 (++++) expression were associated with a shorter survival (p = 0.01, HR = 6.68), while nuclear beta-catenin had no significant impact on prognosis and did not significantly correlate with nuclear LEF1. High proliferation index Ki67 was associated with shorter survival in late-stage disease (p = 0.03, HR 3.27). Additionally, we generated a LEF1/TCF4 as well as an AXIN2 signature, the latter as representative of WNT/beta-catenin activity, following a bioinformatics approach with a gene expression dataset of cerebral metastases in lung adenocarcinoma. To analyze the prognostic relevance in primary lung adenocarcinomas, we applied both signatures to a microarray dataset of 58 primary lung adenocarcinomas. Only the LEF1/TCF4 signature was able to separate clusters with impact on survival (p = 0.01, HR = 0.32). These clusters displayed diverging enrichment patterns of the cell cycle pathway. In conclusion, our data show that LEF1/TCF4, but not beta-catenin, have prognostic relevance in primary and cerebrally metastasized human lung adenocarcinomas. In contrast to the previous in vivo findings, these results indicate that LEF1/TCF4 act independently of beta-catenin in this setting."],["dc.identifier.doi","10.1007/s10585-012-9552-7"],["dc.identifier.isi","000317297400011"],["dc.identifier.pmid","23224985"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10341"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30319"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1573-7276"],["dc.relation.issn","0262-0898"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Nuclear LEF1/TCF4 correlate with poor prognosis but not with nuclear beta-catenin in cerebral metastasis of lung adenocarcinomas"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e93555"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Koenig, Simone"],["dc.contributor.author","Nitzki, Frauke"],["dc.contributor.author","Uhmann, Anja"],["dc.contributor.author","Dittmann, Kai"],["dc.contributor.author","Theiss-Suennemann, Jennifer"],["dc.contributor.author","Herrmann, Markus"],["dc.contributor.author","Reichardt, Holger Michael"],["dc.contributor.author","Schwendener, Reto"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Schulz-Schaeffer, Walter J."],["dc.contributor.author","Hahn, Heidi"],["dc.date.accessioned","2018-11-07T09:41:53Z"],["dc.date.available","2018-11-07T09:41:53Z"],["dc.date.issued","2014"],["dc.description.abstract","Basal cell carcinoma (BCC) belongs to the group of non-melanoma skin tumors and is the most common tumor in the western world. BCC arises due to mutations in the tumor suppressor gene Patched1 (Ptch). Analysis of the conditional Ptch knockout mouse model for BCC reveals that macrophages and dendritic cells (DC) of the skin play an important role in BCC growth restraining processes. This is based on the observation that a clodronate-liposome mediated depletion of these cells in the tumor-bearing skin results in significant BCC enlargement. The depletion of these cells does not modulate Ki67 or K10 expression, but is accompanied by a decrease in collagen-producing cells in the tumor stroma. Together, the data suggest that cutaneous macrophages and DC in the tumor microenvironment exert an antitumor effect on BCC."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [FOR942 HA 2197/5-2]"],["dc.identifier.doi","10.1371/journal.pone.0093555"],["dc.identifier.isi","000334101100104"],["dc.identifier.pmid","24691432"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10067"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33833"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Public Library Science"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Depletion of Cutaneous Macrophages and Dendritic Cells Promotes Growth of Basal Cell Carcinoma in Mice"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3259"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Oncotarget"],["dc.bibliographiccitation.lastpage","3273"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Draeger, Julia"],["dc.contributor.author","Simon-Keller, Katja"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Klemm, Florian"],["dc.contributor.author","Wilting, Joerg"],["dc.contributor.author","Sticht, Carsten"],["dc.contributor.author","Dittmann, Kai"],["dc.contributor.author","Schulz, Matthias"],["dc.contributor.author","Leuschner, Ivo"],["dc.contributor.author","Marx, Alexander"],["dc.contributor.author","Hahn, Heidi"],["dc.date.accessioned","2018-11-07T10:28:26Z"],["dc.date.available","2018-11-07T10:28:26Z"],["dc.date.issued","2017"],["dc.description.abstract","Rhabdomyosarcoma (RMS) is the most common soft tissue sarcoma in children and show characteristics of skeletal muscle differentiation. The two major RMS subtypes in children are alveolar (ARMS) and embryonal RMS (ERMS). We demonstrate that approximately 50% of ARMS and ERMS overexpress the LEF1/TCF transcription factor LEF1 when compared to normal skeletal muscle and that LEF1 can restrain aggressiveness especially of ARMS cells. LEF1 knockdown experiments in cell lines reveal that depending on the cellular context, LEF1 can induce pro-apoptotic signals. LEF1 can also suppress proliferation, migration and invasiveness of RMS cells both in vitro and in vivo. Furthermore, LEF1 can induce myodifferentiation of the tumor cells. This may involve regulation of other LEF1/TCF factors i.e. TCF1, whereas beta-catenin activity plays a subordinate role. Together these data suggest that LEF1 rather has tumor suppressive functions and attenuates aggressiveness in a subset of RMS."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2016"],["dc.identifier.doi","10.18632/oncotarget.13887"],["dc.identifier.isi","000391506300114"],["dc.identifier.pmid","27965462"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14022"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/43418"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.publisher","Impact Journals Llc"],["dc.relation.issn","1949-2553"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0"],["dc.title","LEF1 reduces tumor progression and induces myodifferentiation in a subset of rhabdomyosarcoma"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","143"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Molecular Cell Biology"],["dc.bibliographiccitation.lastpage","153"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Menck, Kerstin"],["dc.contributor.author","Scharf, Christian"],["dc.contributor.author","Bleckmann, Annalen"],["dc.contributor.author","Dyck, Lydia"],["dc.contributor.author","Rost, Ulrike"],["dc.contributor.author","Wenzel, Dirk"],["dc.contributor.author","Dhople, Vishnu M."],["dc.contributor.author","Siam, Laila"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Binder, Claudia"],["dc.contributor.author","Klemm, Florian"],["dc.date.accessioned","2018-11-07T09:58:48Z"],["dc.date.available","2018-11-07T09:58:48Z"],["dc.date.issued","2015"],["dc.description.abstract","Tumor cells secrete not only a variety of soluble factors, but also extracellular vesicles that are known to support the establishment of a favorable tumor niche by influencing the surrounding stroma cells. Here we show that tumor-derived microvesicles (T-MV) also directly influence the tumor cells by enhancing their invasion in a both autologousand heterologous manner. Neither the respective vesicle-free supernatant nor MV from benign mammary cells mediate invasion. Uptake of T-MV is essential for the proinvasive effect. We further identify the highly glycosylated form of the extracellular matrix metalloproteinase inducer (EMMPRIN) as a marker for proinvasive MV. EMMPRIN is also present at high levels on MV from metastatic breast cancer patients in vivo. Anti-EMMPRIN strategies, such as MV deglycosylation, gene knockdown, and specific blocking peptides, inhibit MV-induced invasion. Interestingly, the effect of EMMPRIN-bearing MV is not mediated by matrix metalloproteinases but by activation of the p38/MAPK signaling pathway in the tumor cells. In conclusion, T-MV stimulate cancer cell invasion via a direct feedback mechanism dependent on highly glycosylated EMMPRIN."],["dc.description.sponsorship","Deutsche Krebshilfe [109615]; DFG [BI 703/3-2]; eBIO MetastaSys (BMBF)"],["dc.identifier.doi","10.1093/jmcb/mju047"],["dc.identifier.isi","000355232100006"],["dc.identifier.pmid","25503107"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13819"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37445"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","1759-4685"],["dc.relation.issn","1674-2788"],["dc.rights","CC BY-NC-ND 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc-nd/4.0"],["dc.title","Tumor-derived microvesicles mediate human breast cancer invasion through differentially glycosylated EMMPRIN"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1331"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Glia"],["dc.bibliographiccitation.lastpage","1346"],["dc.bibliographiccitation.volume","61"],["dc.contributor.author","Chuang, Han-Ning"],["dc.contributor.author","van Rossum, Denise"],["dc.contributor.author","Sieger, Dirk"],["dc.contributor.author","Siam, Laila"],["dc.contributor.author","Klemm, Florian"],["dc.contributor.author","Bleckmann, Annalen"],["dc.contributor.author","Bayerlova, Michaela"],["dc.contributor.author","Farhat, Katja"],["dc.contributor.author","Scheffel, Joerg"],["dc.contributor.author","Schulz, Matthias"],["dc.contributor.author","Dehghani, Faramarz"],["dc.contributor.author","Stadelmann, Christine"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.contributor.author","Binder, Claudia"],["dc.contributor.author","Pukrop, Tobias"],["dc.date.accessioned","2018-11-07T09:21:57Z"],["dc.date.available","2018-11-07T09:21:57Z"],["dc.date.issued","2013"],["dc.description.abstract","The metastatic colonization of the brain by carcinoma cells is still barely understood, in particular when considering interactions with the host tissue. The colonization comes with a substantial destruction of the surrounding host tissue. This leads to activation of damage responses by resident innate immune cells to protect, repair, and organize the wound healing, but may distract from tumoricidal actions. We recently demonstrated that microglia, innate immune cells of the CNS, assist carcinoma cell invasion. Here we report that this is a fatal side effect of a physiological damage response of the brain tissue. In a brain slice coculture model, contact with both benign and malignant epithelial cells induced a response by microglia and astrocytes comparable to that seen at the interface of human cerebral metastases. While the glial damage response intended to protect the brain from intrusion of benign epithelial cells by inducing apoptosis, it proved ineffective against various malignant cell types. They did not undergo apoptosis and actually exploited the local tissue reaction to invade instead. Gene expression and functional analyses revealed that the C-X-C chemokine receptor type 4 (CXCR4) and WNT signaling were involved in this process. Furthermore, CXCR4-regulated microglia were recruited to sites of brain injury in a zebrafish model and CXCR4 was expressed in human stroke patients, suggesting a conserved role in damage responses to various types of brain injuries. Together, our findings point to a detrimental misuse of the glial damage response program by carcinoma cells resistant to glia-induced apoptosis. GLIA 2013;61:1331-1346"],["dc.identifier.doi","10.1002/glia.22518"],["dc.identifier.isi","000321983400011"],["dc.identifier.pmid","23832647"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10955"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29226"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Wiley-blackwell"],["dc.relation.issn","0894-1491"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0"],["dc.title","Carcinoma cells misuse the host tissue damage response to invade the brain"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","14"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","GMS Zeitschrift für medizinische Ausbildung"],["dc.bibliographiccitation.lastpage","14"],["dc.bibliographiccitation.volume","29"],["dc.contributor.author","Raupach, Tobias"],["dc.contributor.author","Schiekirka, Sarah"],["dc.contributor.author","Münscher, Christian"],["dc.contributor.author","Beißbarth, Tim"],["dc.contributor.author","Himmel, Wolfgang"],["dc.contributor.author","Burckhardt, Gerhard"],["dc.contributor.author","Pukrop, Tobias"],["dc.date.accessioned","2019-07-10T08:14:07Z"],["dc.date.available","2019-07-10T08:14:07Z"],["dc.date.issued","2012"],["dc.description.abstract","Zielsetzung: Aktuell werden an den deutschen medizinischen Fakultäten unterschiedliche Konzepte zur leistungsorientierten Mittelvergabe (LOM)in der Lehre diskutiert. Die Umsetzung scheitert mitunter am Mangel valider Messkriterien zur Beurteilung der Lehrqualität. Neben der Struktur und den Prozessen der Lehre sollte das Ergebnis der Lehre im Mittelpunkt der Qualitätsbewertung stehen. Ziele dieser Arbeit waren die Erprobung eines neuen, lernzielbezogenen Evaluationssystems im klinischen Abschnitt des Studiums der Humanmedizin und der Vergleich der Ergebnisse mit den Daten eines traditionellen Evaluationsverfahrens. Methodik: Aus studentischen Selbsteinschätzungen zu Beginn und Ende eines jeden Lehrmoduls wurde nach einer neu entwickelten Formel der lernzielbezogene, prozentuale Lernerfolg berechnet. Die Lernerfolgs- Mittelwerte pro Modul wurden mit traditionellen Evaluationsparametern, insbesondere mit Globalbewertungen, ins Verhältnis gesetzt. Ergebnisse: Der mittels vergleichender Selbsteinschätzungen berechnete Lernerfolg und die Globalbewertungen produzierten deutlich unterschiedliche Rangfolgen der 21 klinischen Module. Zwischen dem Lernerfolg und den Globalbewertungen fand sich keine statistisch signifikante Korrelation. Allerdings korrelierten die Globalbewertungen stark mit den studentischen Erwartungen vor Modulbeginn und mit strukturellen und prozeduralen Parametern der Lehre (Pearson’s r zwischen 0,7 und 0,9). Schlussfolgerung: Die Messung des Lernzuwachses mittels vergleichender studentischer Selbsteinschätzungen kann die traditionelle Evaluation um eine wichtige Dimension erweitern. Im Unterschied zu studentischen Globalbewertungen ist das neue Instrument lernzielbezogen und unabhängiger vom Einfluss Konstrukt-irrelevanter Parameter. Hinsichtlich der Entwicklung eines LOM-Algorithmus eignet sich das neue Instrument gut zur Beurteilung der Lehrqualität."],["dc.identifier.fs","591967"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9538"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61439"],["dc.language.iso","de"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1860-3572"],["dc.relation.orgunit","Universitätsmedizin Göttingen"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","610"],["dc.title","Implementierung und Erprobung eines Lernziel-basierten Evaluationssystems im Studium der Humanmedizin"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","45"],["dc.bibliographiccitation.journal","BMC Medical Education"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Schiekirka, Sarah"],["dc.contributor.author","Reinhardt, Deborah"],["dc.contributor.author","Heim, Susanne"],["dc.contributor.author","Fabry, Goetz"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Anders, Sven"],["dc.contributor.author","Raupach, Tobias"],["dc.date.accessioned","2018-11-07T09:09:11Z"],["dc.date.available","2018-11-07T09:09:11Z"],["dc.date.issued","2012"],["dc.description.abstract","Background: Evaluation is an integral part of medical education. Despite a wide use of various evaluation tools, little is known about student perceptions regarding the purpose and desired consequences of evaluation. Such knowledge is important to facilitate interpretation of evaluation results. The aims of this study were to elicit student views on the purpose of evaluation, indicators of teaching quality, evaluation tools and possible consequences drawn from evaluation data. Methods: This qualitative study involved 17 undergraduate medical students in Years 3 and 4 participating in 3 focus group interviews. Content analysis was conducted by two different researchers. Results: Evaluation was viewed as a means to facilitate improvements within medical education. Teaching quality was believed to be dependent on content, process, teacher and student characteristics as well as learning outcome, with an emphasis on the latter. Students preferred online evaluations over paper-and-pencil forms and suggested circulating results among all faculty and students. Students strongly favoured the allocation of rewards and incentives for good teaching to individual teachers. Conclusions: In addition to assessing structural aspects of teaching, evaluation tools need to adequately address learning outcome. The use of reliable and valid evaluation methods is a prerequisite for resource allocation to individual teachers based on evaluation results."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2012"],["dc.identifier.doi","10.1186/1472-6920-12-45"],["dc.identifier.isi","000306900100001"],["dc.identifier.pmid","22726271"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7830"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26199"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Biomed Central Ltd"],["dc.relation.issn","1472-6920"],["dc.rights","CC BY 2.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.0"],["dc.title","Student perceptions of evaluation in undergraduate medical education: A qualitative study from one medical school"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2057"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Oncotarget"],["dc.bibliographiccitation.lastpage","2066"],["dc.bibliographiccitation.volume","4"],["dc.contributor.author","Menck, Kerstin"],["dc.contributor.author","Klemm, Florian"],["dc.contributor.author","Gross, Julia Christina"],["dc.contributor.author","Pukrop, Tobias"],["dc.contributor.author","Wenzel, Dirk"],["dc.contributor.author","Binder, Claudia"],["dc.date.accessioned","2019-07-10T08:11:46Z"],["dc.date.available","2019-07-10T08:11:46Z"],["dc.date.issued","2013-11-01"],["dc.description.abstract","Recently, we have shown that macrophage (MΦ)-induced invasion of breast cancer cells requires upregulation of Wnt 5a in MΦ leading to activation of β-Catenin-independent Wnt signaling in the tumor cells. However, it remained unclear, how malignant cells induce Wnt 5a in MΦ and how it is transferred back to the cancer cells. Here we identify two types of extracellular particles as essential for this intercellular interaction in both directions. Plasma membrane-derived microvesicles (MV) as well as exosomes from breast cancer cells, although biologically distinct populations, both induce Wnt 5a in MΦ. In contrast, the particle-free supernatant and vesicles from benign cells, such as platelets, have no such effect. Induction is antagonized by the Wnt inhibitor Dickkopf-1. Subsequently, Wnt 5a is shuttled via responding MΦ-MV and exosomes to the tumor cells enhancing their invasion. Wnt 5a export on both vesicle fractions depends at least partially on the cargo protein Evenness interrupted (Evi). Its knockdown leads to Wnt 5a depletion of both particle populations and reduced vesicle-mediated invasion. In conclusion, MV and exosomes are critical for MΦ-induced invasion of cancer cells since they are responsible for upregulation of MΦ-Wnt 5a as well as for its delivery to the recipient cells via a reciprocal loop. Although of different biogenesis, both populations share common features regarding function and Evi-dependent secretion of non-canonical Wnts."],["dc.identifier.fs","603831"],["dc.identifier.pmid","24185202"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10760"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60794"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1949-2553"],["dc.relation.orgunit","Universitätsmedizin Göttingen"],["dc.rights","CC BY 3.0"],["dc.rights.uri","http://creativecommons.org/licenses/by/3.0"],["dc.title","Induction and transport of Wnt 5a during macrophage-induced malignant invasion is mediated by two types of extracellular vesicles."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","15482"],["dc.bibliographiccitation.issue","17"],["dc.bibliographiccitation.journal","Oncotarget"],["dc.bibliographiccitation.lastpage","15493"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Rietkötter, Eva"],["dc.contributor.author","Bleckmann, Annalen"],["dc.contributor.author","Bayerlová, Michaela"],["dc.contributor.author","Menck, Kerstin"],["dc.contributor.author","Chuang, Han-Ning"],["dc.contributor.author","Wenske, Britta"],["dc.contributor.author","Schwartz, Hila"],["dc.contributor.author","Erez, Neta"],["dc.contributor.author","Binder, Claudia"],["dc.contributor.author","Hanisch, Uwe-Karsten"],["dc.contributor.author","Pukrop, Tobias"],["dc.date.accessioned","2019-07-09T11:42:37Z"],["dc.date.available","2019-07-09T11:42:37Z"],["dc.date.issued","2015-06-20"],["dc.description.abstract","The mononuclear phagocytic system is categorized in three major groups: monocyte-derived cells (MCs), dendritic cells and resident macrophages. During breast cancer progression the colony stimulating factor 1 (CSF-1) can reprogram MCs into tumor-promoting macrophages in the primary tumor. However, the effect of CSF-1 during colonization of the brain parenchyma is largely unknown. Thus, we analyzed the outcome of anti-CSF-1 treatment on the resident macrophage population of the brain, the microglia, in comparison to MCs, alone and in different in vitro co-culture models. Our results underline the addiction of MCs to CSF-1 while surprisingly, microglia were not affected. Furthermore, in contrast to the brain, the bone marrow did not express the alternative ligand, IL-34. Yet treatment with IL-34 and co-culture with carcinoma cells partially rescued the anti-CSF-1 effects on MCs. Further, MC-induced invasion was significantly reduced by anti-CSF-1 treatment while microglia-induced invasion was reduced to a lower extend. Moreover, analysis of lung and breast cancer brain metastasis revealed significant differences of CSF-1 and CSF-1R expression. Taken together, our findings demonstrate not only differences of anti-CSF-1 treatment on MCs and microglia but also in the CSF-1 receptor and ligand expression in brain and bone marrow as well as in brain metastasis."],["dc.identifier.doi","10.18632/oncotarget.3855"],["dc.identifier.fs","618466"],["dc.identifier.pmid","26098772"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13609"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58709"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1949-2553"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0"],["dc.subject.mesh","Animals"],["dc.subject.mesh","Antibodies, Monoclonal"],["dc.subject.mesh","Brain"],["dc.subject.mesh","Brain Neoplasms"],["dc.subject.mesh","Breast Neoplasms"],["dc.subject.mesh","Cell Line, Tumor"],["dc.subject.mesh","Cell Movement"],["dc.subject.mesh","Cell Proliferation"],["dc.subject.mesh","Female"],["dc.subject.mesh","Humans"],["dc.subject.mesh","Interleukin-1"],["dc.subject.mesh","MCF-7 Cells"],["dc.subject.mesh","Macrophage Colony-Stimulating Factor"],["dc.subject.mesh","Macrophages"],["dc.subject.mesh","Mice"],["dc.subject.mesh","Mice, Inbred BALB C"],["dc.subject.mesh","Microglia"],["dc.subject.mesh","Monocytes"],["dc.subject.mesh","Neoplasm Invasiveness"],["dc.subject.mesh","Receptor, Macrophage Colony-Stimulating Factor"],["dc.title","Anti-CSF-1 treatment is effective to prevent carcinoma invasion induced by monocyte-derived cells but scarcely by microglia."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]