A subpopulation of cancer stem cells identifies radiographic characteristics in glioblastoma.

Abstract:

:Cancer stem cells (CSCs), defined by CD133 expression, harbor heterogeneous subpopulations of cells, including endothelial progenitor cells (EPCs). This study aimed to investigate whether a subpopulation of CSCs could affect the radiographic characteristics of glioblastoma. Tissue samples from 10 patients newly diagnosed with glioblastoma were selected according to the radiographic characteristics of their tumors. The patients were divided into two groups based on preoperative magnetic resonance imaging demonstrating contrast enhancement, necrosis and infiltrative patterns: the enhancement/necrosis group (E/N, n=5) and the non-enhancement/infiltration group (NE/I, n=5). Flow cytometry was used to assess the CSCs while immunohistochemistry was used to study microvessel density and the proliferation index. The EPC (CD34+/CD133+) fraction in CSCs (CD133+) was larger in the NE/I group. However, there was little difference in the angiogenic activity assessed using microvessel density between the two groups. The proliferation index (assessed using the antibody Ki-67) was higher in the E/N group and was negatively correlated with the EPC fraction. The non-EPC (CD34-/CD133+) fraction is a major factor responsible for radiographic characteristics of contrast enhancement, thus establishing an association between a subpopulation fraction of CSCs and radiographic characteristics in glioblastoma. Therefore, the simple non-invasive assessment of studying contrast enhancement lesions in glioblastomas may be used to estimate CSC subpopulations.

journal_name

Oncol Lett

journal_title

Oncology letters

authors

Kim JE,Kim SK,Shin J,Se YB,Choi SH,Park SH,Choi SA,Lee JY,Phi JH,Wang KC,Park CK,Kim SK

doi

10.3892/ol.2016.5548

subject

Has Abstract

pub_date

2017-03-01 00:00:00

pages

1175-1182

issue

3

eissn

1792-1074

issn

1792-1082

pii

OL-0-0-5548

journal_volume

13

pub_type

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