Open AccessImmunohistochemistry analysis of Pygo2 expression in central nervous system tumors
Author(s) -
Liang Yi,
Wang Chaoxi,
Chen Apeng,
Zhu Lei,
Zhang Jie,
Jiang Pucha,
Yue Qiaoxin,
De Gejing
Publication year - 2018
Publication title -
journal of cell communication and signaling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.329
H-Index - 44
eISSN - 1873-961X
pISSN - 1873-9601
DOI - 10.1007/s12079-018-0476-0
Subject(s) - immunohistochemistry , pathology , malignancy , wnt signaling pathway , central nervous system , cancer , glioma , biology , medicine , cancer research , signal transduction , neuroscience , biochemistry
Pygo2 as a Wnt signaling pathway component has been detected in multiple cancer types. In this study, we identified Pygo2 expression features by immunohistochemistry in 73 central nervous system tumor specimens, in comparison with 14 normal brain tissues and surrounding non‐tumorous tissues of tumor. Our study indicated that 59% of the patient tumor specimens exhibited positive Pygo2‐staining and increases intensity with the grade of malignancy, especially for WHO grade III and IV gliomas, was observed high level expression, compared with normal brain tissues. Five out of nine WHO grade III anaplastic astrocytomas and seven out of nine WHO grade IV glioblastomas showed Pygo2‐positive staining. The analysis of Pygo2 gene expression by quantitative real‐time PCR of additional ten fresh patient samples yielded similar results. Further studies performed with stable cell lines in vitro demonstrated that Pygo2 render cells higher proliferation rate, migration and anchorage‐independent colony‐forming ability in soft agar. Taken together, our studies suggest an important role of Pygo2 in brain tumor progression.