HLA-E contributes to an immune-inhibitory phenotype of glioblastoma stem-like cells

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HLA-E contributes to an immune-inhibitory phenotype of glioblastoma stem-like cells. / Wolpert, Fabian; Roth, Patrick; Lamszus, Katrin; Tabatabai, Ghazaleh; Weller, Michael; Eisele, Günter.

In: J NEUROIMMUNOL, Vol. 250, No. 1-2, 15.09.2012, p. 27-34.

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@article{2f18ea8d09294b708f70ad306aeee2b8,
title = "HLA-E contributes to an immune-inhibitory phenotype of glioblastoma stem-like cells",
abstract = "Cancer stem cells are an attractive target for immunotherapeutic approaches to glioblastoma. However, an immune inhibitory phenotype of cells currently classified as {"}glioma-initiating cells{"} (GIC) might counteract recognition by immune effector cells. Here, we investigate the contribution of the non-classical MHC molecule HLA-E to the immunosuppressive phenotype of GIC. HLA-E is expressed in GIC lines and its expression is reduced upon differentiation of GIC in serum-containing culture conditions. Constitutive HLA-E inhibits natural killer (NK) cell-mediated lysis of GIC since small-interfering RNA-mediated HLA-E gene silencing enhances the immunogenicity of GIC. Increased GIC lysis was observed both in the CD133+ and in the CD133- compartment. Furthermore, the use of interferon-γ as a possible agent to boost an immune response against glioblastoma cells might be limited by the concurrent upregulation of HLA-E.",
keywords = "Brain Neoplasms, Cell Line, Tumor, Flow Cytometry, Glioblastoma, Histocompatibility Antigens Class I, Humans, Killer Cells, Natural, Neoplastic Stem Cells, Phenotype, Real-Time Polymerase Chain Reaction",
author = "Fabian Wolpert and Patrick Roth and Katrin Lamszus and Ghazaleh Tabatabai and Michael Weller and G{\"u}nter Eisele",
note = "Copyright {\textcopyright} 2012 Elsevier B.V. All rights reserved.",
year = "2012",
month = sep,
day = "15",
doi = "10.1016/j.jneuroim.2012.05.010",
language = "English",
volume = "250",
pages = "27--34",
journal = "J NEUROIMMUNOL",
issn = "0165-5728",
publisher = "Elsevier",
number = "1-2",

}

RIS

TY - JOUR

T1 - HLA-E contributes to an immune-inhibitory phenotype of glioblastoma stem-like cells

AU - Wolpert, Fabian

AU - Roth, Patrick

AU - Lamszus, Katrin

AU - Tabatabai, Ghazaleh

AU - Weller, Michael

AU - Eisele, Günter

N1 - Copyright © 2012 Elsevier B.V. All rights reserved.

PY - 2012/9/15

Y1 - 2012/9/15

N2 - Cancer stem cells are an attractive target for immunotherapeutic approaches to glioblastoma. However, an immune inhibitory phenotype of cells currently classified as "glioma-initiating cells" (GIC) might counteract recognition by immune effector cells. Here, we investigate the contribution of the non-classical MHC molecule HLA-E to the immunosuppressive phenotype of GIC. HLA-E is expressed in GIC lines and its expression is reduced upon differentiation of GIC in serum-containing culture conditions. Constitutive HLA-E inhibits natural killer (NK) cell-mediated lysis of GIC since small-interfering RNA-mediated HLA-E gene silencing enhances the immunogenicity of GIC. Increased GIC lysis was observed both in the CD133+ and in the CD133- compartment. Furthermore, the use of interferon-γ as a possible agent to boost an immune response against glioblastoma cells might be limited by the concurrent upregulation of HLA-E.

AB - Cancer stem cells are an attractive target for immunotherapeutic approaches to glioblastoma. However, an immune inhibitory phenotype of cells currently classified as "glioma-initiating cells" (GIC) might counteract recognition by immune effector cells. Here, we investigate the contribution of the non-classical MHC molecule HLA-E to the immunosuppressive phenotype of GIC. HLA-E is expressed in GIC lines and its expression is reduced upon differentiation of GIC in serum-containing culture conditions. Constitutive HLA-E inhibits natural killer (NK) cell-mediated lysis of GIC since small-interfering RNA-mediated HLA-E gene silencing enhances the immunogenicity of GIC. Increased GIC lysis was observed both in the CD133+ and in the CD133- compartment. Furthermore, the use of interferon-γ as a possible agent to boost an immune response against glioblastoma cells might be limited by the concurrent upregulation of HLA-E.

KW - Brain Neoplasms

KW - Cell Line, Tumor

KW - Flow Cytometry

KW - Glioblastoma

KW - Histocompatibility Antigens Class I

KW - Humans

KW - Killer Cells, Natural

KW - Neoplastic Stem Cells

KW - Phenotype

KW - Real-Time Polymerase Chain Reaction

U2 - 10.1016/j.jneuroim.2012.05.010

DO - 10.1016/j.jneuroim.2012.05.010

M3 - SCORING: Journal article

C2 - 22688424

VL - 250

SP - 27

EP - 34

JO - J NEUROIMMUNOL

JF - J NEUROIMMUNOL

SN - 0165-5728

IS - 1-2

ER -