Identification of CD24 as a Cancer Stem Cell Marker in Human Nasopharyngeal Carcinoma
Author(s) -
ChunHung Yang,
Huiling Wang,
YiSheng Lin,
Krishan Kumar,
HungChi Lin,
ChihJung Chang,
ChiaChen Lu,
TsungTeng Huang,
Jan Martel,
David M. Ojcius,
YuSun Chang,
John D. Young,
HsinChih Lai
Publication year - 2014
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0099412
Subject(s) - sox2 , homeobox protein nanog , cancer stem cell , nasopharyngeal carcinoma , cd24 , cd44 , biology , cancer research , stem cell , wnt signaling pathway , population , stem cell marker , cell , immunology , embryonic stem cell , microbiology and biotechnology , medicine , signal transduction , induced pluripotent stem cell , genetics , gene , environmental health , radiation therapy
Cancer stem cells (CSCs) represent a unique sub-population of tumor cells with the ability to initiate tumor growth and sustain self-renewal. Although CSC biomarkers have been described for various tumors, only a few markers have been identified for nasopharyngeal carcinoma (NPC). In this study, we show that CD24 + cells isolated from human NPC cell lines express stem cell genes ( Sox2 , Oct4 , Nanog , Bmi-1 , and Rex-1 ), and show activation of the Wnt/β-catenin signaling pathway. CD24 + cells possess typical CSC characteristics that include enhanced cell proliferation, increased colony and sphere formation, maintenance of cell differentiation potential in prolonged culture, and enhanced resistance to chemotherapeutic drugs. Notably, CD24 + cells produce tumors following inoculation of as few as 500 cells in immunodeficient NOD/SCID mice. CD24 + cells further show increased invasion ability in vitro , which correlates with enhanced expression of matrix metalloproteinase 2 and 9. In summary, our results suggest that CD24 represents a novel CSC biomarker in NPC.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom