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Erschienen in: Journal of Cancer Research and Clinical Oncology 1/2013

01.01.2013 | Original Paper

Susceptibility to cytotoxic T cell lysis of cancer stem cells derived from cervical and head and neck tumor cell lines

verfasst von: Tian Liao, Andreas M. Kaufmann, Xu Qian, Voramon Sangvatanakul, Chao Chen, Tina Kube, Guoyou Zhang, Andreas E. Albers

Erschienen in: Journal of Cancer Research and Clinical Oncology | Ausgabe 1/2013

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Abstract

Purpose

To explore cancer stem cell susceptibility to a host’s cytotoxic T lymphocyte (CTL)-mediated immune response.

Methods

We compared the susceptibility of putative CSC generated from cancer cell lines to immunologic recognition and killing by alloantigen-specific CD8+ CTL. CSC-enriched spheroid culture-derived cells (SDC) exhibited higher expression of ALDH, ICAM1 and of stem/progenitor cell markers on all 3 tumor cell lines investigated and lower MHC class I on the cervical cancer cell line as compared to their monolayer-derived cells (MDC).

Results

The expression of ICAM1 and MHCI was upregulated by IFN-γ treatment. CSC populations were less sensitive to MHC class I-restricted alloantigen-specific CD8+ CTL lysis as compared to matched MDC. IFN-γ pretreatment resulted in over-proportionally enhanced lysis of SDC. Finally, the subset of ALDHhigh expressing SDC presented more sensitivity toward CD8+ CTL killing than the ALDHlow SDC.

Conclusions

Tumor therapy resistance has been attributed to cancer stem cells (CSC). We show in vitro susceptibility of CSC to CTL-mediated lysis. Immunotherapy targeting of ALDH+ CSC may therefore be a promising approach. Our results and method may be helpful for the development and optimization of adjuvants, as here exemplified for INF-γ, for CSC-targeted vaccines, independent of the availability of CSC-specific antigens.
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Metadaten
Titel
Susceptibility to cytotoxic T cell lysis of cancer stem cells derived from cervical and head and neck tumor cell lines
verfasst von
Tian Liao
Andreas M. Kaufmann
Xu Qian
Voramon Sangvatanakul
Chao Chen
Tina Kube
Guoyou Zhang
Andreas E. Albers
Publikationsdatum
01.01.2013
Verlag
Springer-Verlag
Erschienen in
Journal of Cancer Research and Clinical Oncology / Ausgabe 1/2013
Print ISSN: 0171-5216
Elektronische ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-012-1311-2

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