Premium
CD38 is a putative functional marker for side population cells in human nasopharyngeal carcinoma cell lines
Author(s) -
Zheng Danwei,
Liao Shan,
Zhu Guangchao,
Luo Gengqiu,
Xiao Songshu,
He Junyu,
Pei Zhen,
Li Guiyuan,
Zhou Yanhong
Publication year - 2016
Publication title -
molecular carcinogenesis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.254
H-Index - 97
eISSN - 1098-2744
pISSN - 0899-1987
DOI - 10.1002/mc.22279
Subject(s) - biology , side population , nasopharyngeal carcinoma , cd38 , cancer stem cell , cell culture , cancer research , population , cell , stem cell , microbiology and biotechnology , microrna , gene , genetics , medicine , cd34 , radiation therapy , demography , sociology
Cancer stem cells (CSCs) are thought to be responsible for cancer progression and therapeutic resistance but identification of this subpopulation requires selective markers. Fortunately, side population (SP) cells analysis brings a novel method to CSCs study. In this study, we identified SP cells, which are demonstrated rich in CSCs, in four nasopharyngeal carcinoma (NPC) cell lines. We investigated SP cells from HK‐1 NPC cell line and showed CSCs characteristics in this subpopulation. SP cells displayed greater proliferation and invasion and expressed high levels of CSCs markers than NSP cells. Furthermore, our microRNA microarray analysis of SP versus NSP cells revealed that CD38‐related miRNAs were down‐regulated in SP cell, but the mRNA and protein level of CD38 were highly expressed in SP cells. We further searched for molecules interacting with CD38 and identified ZAP70, which was also well expressed in SP cells at both mRNA and protein levels. Our results uncover a CD38 pathway that may regulate the proliferation and migration of SP cells from HK‐1 NPC cell line. © 2015 Wiley Periodicals, Inc.