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Heterogeneity of radiation induced apoptosis in Ewing Tumor cell lines characterized on a single cell level

Lookup NU author(s): Professor Hermann Josef Vormoor

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Abstract

The objective of this study was to investigate heterogeneity of radiation induced apoptosis on a single cell level. Two Ewing tumor cell lines were characterized in vitro before and 24 and 72 h after radiation with 5 Gy by multiparametric flow cytometry. Annexin V, 7-AAD and fluorescence conjugated antibodies that were directed against HLA-ABC, CD11a and CD62L were used. Based on these markers radiation induced apoptosis was quantified, multiple apoptotic subpopulations were identified and a characteristic individual apoptotic profile was characterized. The characterization of HLA-ABC, CD11a and CD62L was informative to detect subpopulations of apoptotic cells. The observed heterogeneity and the identification of multiple apoptotic subpopulations reflect the complexity and diversity of biology of radiation induced cell death. This might be an indication for co-existing apoptotic pathways or it might represent sequential steps of the apoptotic cascade.

Publication metadata

Author(s): Könemann S, Bölling T, Kolkmeyer A, Riesenbeck D, Hesselmann S, Vormoor J, Willich N, Schuck A

Publication type: Article

Publication status: Published

Journal: Apoptosis

Year: 2005

Volume: 10

Issue: 1

Pages: 177-184

Print publication date: 01/01/2005

ISSN (print): 1360-8185

ISSN (electronic): 1573-675X

URL: http://dx.doi.org/10.1007/s10495-005-6072-9

DOI: 10.1007/s10495-005-6072-9

Notes: 1360-8185 (Print) Journal Article

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