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Ultrasonic surgical aspirate is a reliable source for culturing glioblastoma stem cells

ABSTRACT: Glioblastoma stem cells (GSCs) are thought to be the source of tumor growth and therapy resistance. Core biosies that are used to generate GSC cultures are ususally taken from one part of the tumor and are thus unlikely to represent intra-tumoral heterogeneity. This study shows that the ultrasonic aspirates (UA), that are usually considered as a biological waste, can be used as a reliable source of GSCs. Furthermore the UA aspirates seem to be capturing the tumorigenic signature better than the traditional biopsies.

ORGANISM(S): Homo sapiens

PROVIDER: GSE84707 | GEO | 2017/02/10

SECONDARY ACCESSION(S): PRJNA330866

REPOSITORIES: GEO

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Ultrasonic surgical aspirate is a reliable source for adult neural progenitor cells (aNPCs)

Project description:Adult neural progenitor cells (aNPCs) are a potential source for cell based therapy for neurodegenerative diseases and traumatic brain injuries. We show that the ultrasonic aspirate samples that are typically considered as a waste after surgery are a great source for aHNPCs.

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Ultrasonic Surgical Aspirate is a Reliable Source For Culturing Glioblastoma Stem Cells.

Project description:Glioma stem cells (GSCs) are thought to be the source of tumor growth and therapy resistance. To understand the biology of GSCs, and target these tumors therapeutically, we need robust strategies for in vitro expansion of primary GSCs. To date, tumor core biopsies have been the main established source of GSCs. Since these samples are used for diagnostic purposes, the available tissue for cell culture and therapeutic targeting can be limited. In addition, a core biopsy is usually taken from one part of the tumor, thus would be unlikely to represent intra-tumor heterogeneity. To overcome these problems, tissue fragments from all over the tumor can be collected using an ultrasonic aspirator during surgery, thus assembling a "global tumor biopsy". Usually, this ultrasonic aspirate (UA) sample is considered as biological waste after operations. Here, we show that UA samples offer a large and reliable source of live cells. Similar to core biopsies, UA samples enriched for GSCs that differentiated into neural lineages, showed inter-individual variation of GSC markers, and induced tumors. Molecular profiling showed that UA samples cover tumor heterogeneity better than core biopsies. These results suggest that UA samples can be used to establish large scale cultures for therapeutic applications.

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FFPE-samples from cavitational ultrasonic surgical aspirates are suitable for RNA profiling of gliomas

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