Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model

Abstract Medulloblastoma (MB) is a paediatric cancer of the cerebellum that can develop cerebellar and leptomeningeal metastases. Local brain tissue infiltration, the underlying cause of metastasis and relapse, remains unexplored. We developed a novel approach to investigate tissue infiltration of M...

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Autores principales:	Anuja Neve, Karthiga Santhana Kumar, Dimitra Tripolitsioti, Michael A. Grotzer, Martin Baumgartner
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3e8243d7dce1495abdc67618cc837a72
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spelling	oai:doaj.org-article:3e8243d7dce1495abdc67618cc837a722021-12-02T15:05:25ZInvestigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model10.1038/s41598-017-05573-w2045-2322https://doaj.org/article/3e8243d7dce1495abdc67618cc837a722017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05573-whttps://doaj.org/toc/2045-2322Abstract Medulloblastoma (MB) is a paediatric cancer of the cerebellum that can develop cerebellar and leptomeningeal metastases. Local brain tissue infiltration, the underlying cause of metastasis and relapse, remains unexplored. We developed a novel approach to investigate tissue infiltration of MB using organotypic cerebellum slice culture (OCSC). We show that cellular and structural components of cerebellar tissue in OCSCs are maintained for up to 30 days ex vivo, and that OCSCs foster tumour growth and cell proliferation. Using cell-based models of sonic hedgehog (SHH) and group 3 (G3) MB, we quantified tumour growth and infiltration and determined the morphological characteristics of the infiltrating cells. We observed basal levels of dissemination occurring in both subgroups with cells migrating either individually or collectively as clusters. Collective cerebellar tissue infiltration of SHH MB cells was further enhanced by EGF but not HGF, demonstrating differential tumour cell responses to microenvironmental cues. We found G3 cells to be hyper proliferative and observed aggressive tumour expansion even in the absence of exogenous growth factors. Our study thus provides unprecedented insights into brain tissue infiltration of SHH and G3 MB cells and reveals the cellular basis of the tumour progressing functions of EGF in SHH MB.Anuja NeveKarthiga Santhana KumarDimitra TripolitsiotiMichael A. GrotzerMartin BaumgartnerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anuja Neve Karthiga Santhana Kumar Dimitra Tripolitsioti Michael A. Grotzer Martin Baumgartner Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model
description	Abstract Medulloblastoma (MB) is a paediatric cancer of the cerebellum that can develop cerebellar and leptomeningeal metastases. Local brain tissue infiltration, the underlying cause of metastasis and relapse, remains unexplored. We developed a novel approach to investigate tissue infiltration of MB using organotypic cerebellum slice culture (OCSC). We show that cellular and structural components of cerebellar tissue in OCSCs are maintained for up to 30 days ex vivo, and that OCSCs foster tumour growth and cell proliferation. Using cell-based models of sonic hedgehog (SHH) and group 3 (G3) MB, we quantified tumour growth and infiltration and determined the morphological characteristics of the infiltrating cells. We observed basal levels of dissemination occurring in both subgroups with cells migrating either individually or collectively as clusters. Collective cerebellar tissue infiltration of SHH MB cells was further enhanced by EGF but not HGF, demonstrating differential tumour cell responses to microenvironmental cues. We found G3 cells to be hyper proliferative and observed aggressive tumour expansion even in the absence of exogenous growth factors. Our study thus provides unprecedented insights into brain tissue infiltration of SHH and G3 MB cells and reveals the cellular basis of the tumour progressing functions of EGF in SHH MB.
format	article
author	Anuja Neve Karthiga Santhana Kumar Dimitra Tripolitsioti Michael A. Grotzer Martin Baumgartner
author_facet	Anuja Neve Karthiga Santhana Kumar Dimitra Tripolitsioti Michael A. Grotzer Martin Baumgartner
author_sort	Anuja Neve
title	Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model
title_short	Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model
title_full	Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model
title_fullStr	Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model
title_full_unstemmed	Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model
title_sort	investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/3e8243d7dce1495abdc67618cc837a72
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_version_	1718388823299194880

Investigation of brain tissue infiltration by medulloblastoma cells in an ex vivo model

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