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Article

TRIM28 Selective Nanobody Reduces Glioblastoma Stem Cell Invasion

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Department of Neurosurgery, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia
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Department of Genetic Toxicology and Cancer Biology, National Institute of Biology, 1000 Ljubljana, Slovenia
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Jožef Stefan International Postgraduate School, 1000 Ljubljana, Slovenia
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Medical Centre for Molecular Biology, Institute for Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
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Department of Biology, Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
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Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1000 Ljubljana, Slovenia
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Authors to whom correspondence should be addressed.
Academic Editor: Isabelle Mus-Veteau
Molecules 2021, 26(17), 5141; https://doi.org/10.3390/molecules26175141
Received: 6 July 2021 / Revised: 22 August 2021 / Accepted: 23 August 2021 / Published: 25 August 2021
(This article belongs to the Collection Novel Approache of Anticancer Therapy)
Glioblastoma (GB), is the most common and aggressive malignant primary brain tumour in adults. Intra- and inter-tumour heterogeneity, infiltrative GB cell invasion and presence of therapy-resistant GB stem cells (GSCs) represent major obstacles to favourable prognosis and poor therapy response. Identifying the biomarkers of the most aggressive tumour cells and their more efficient targeting strategies are; therefore, crucial. Recently, transcription factor TRIM28 has been identified as a GB biomarker and, in this study, we have shown high expression of TRIM28 in GB and in low grade gliomas as well as higher expression in GSCs vs. differentiated GB cells, although in both cases not significant. We demonstrated significant in vitro inhibition of GB cells and GSCs invasiveness and spread in zebrafish brains in vivo by anti-TRIM28 selective nanobody NB237. TRIM28 was also enriched in GB (tumour) core and associated with the expression of stem cell genes, but was not prognostic for overall survival. However, based on the above results, we conclude that TRIM28 nanobody NB237 offers a new opportunity as a GB therapeutic tool. View Full-Text
Keywords: glioblastoma; nanobody; glioblastoma stem cells; cell invasion; transcription factor; TRIM28 glioblastoma; nanobody; glioblastoma stem cells; cell invasion; transcription factor; TRIM28
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MDPI and ACS Style

Porčnik, A.; Novak, M.; Breznik, B.; Majc, B.; Hrastar, B.; Šamec, N.; Zottel, A.; Jovčevska, I.; Vittori, M.; Rotter, A.; Komel, R.; Lah Turnšek, T. TRIM28 Selective Nanobody Reduces Glioblastoma Stem Cell Invasion. Molecules 2021, 26, 5141. https://doi.org/10.3390/molecules26175141

AMA Style

Porčnik A, Novak M, Breznik B, Majc B, Hrastar B, Šamec N, Zottel A, Jovčevska I, Vittori M, Rotter A, Komel R, Lah Turnšek T. TRIM28 Selective Nanobody Reduces Glioblastoma Stem Cell Invasion. Molecules. 2021; 26(17):5141. https://doi.org/10.3390/molecules26175141

Chicago/Turabian Style

Porčnik, Andrej, Metka Novak, Barbara Breznik, Bernarda Majc, Barbara Hrastar, Neja Šamec, Alja Zottel, Ivana Jovčevska, Miloš Vittori, Ana Rotter, Radovan Komel, and Tamara Lah Turnšek. 2021. "TRIM28 Selective Nanobody Reduces Glioblastoma Stem Cell Invasion" Molecules 26, no. 17: 5141. https://doi.org/10.3390/molecules26175141

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