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Decreased FOXJ1 expression and its ciliogenesis programme in aggressive ependymoma and choroid plexus tumours
Author(s) -
Abedalthagafi Malak S,
Wu Michael P,
Merrill Parker H,
Du Ziming,
Woo Terri,
Sheu ShuHsien,
Hurwitz Shelley,
Ligon Keith L,
Santagata Sandro
Publication year - 2016
Publication title -
the journal of pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.964
H-Index - 184
eISSN - 1096-9896
pISSN - 0022-3417
DOI - 10.1002/path.4682
Subject(s) - ciliogenesis , choroid plexus , ependymoma , biology , ependyma , cilium , ependymal cell , pathology , cancer research , microbiology and biotechnology , neuroscience , medicine , central nervous system
Well‐differentiated human cancers share transcriptional programmes with the normal tissue counterparts from which they arise. These programmes broadly influence cell behaviour and function and are integral modulators of malignancy. Here, we show that the master regulator of motile ciliogenesis, FOXJ1 , is highly expressed in cells along the ventricular surface of the human brain. Strong expression is present in cells of the ependyma and the choroid plexus as well as in a subset of cells residing in the subventricular zone. Expression of FOXJ1 and its transcriptional programme is maintained in many well‐differentiated human tumours that arise along the ventricle, including low‐grade ependymal tumours and choroid plexus papillomas. Anaplastic ependymomas as well as choroid plexus carcinomas show decreased FOXJ1 expression and its associated ciliogenesis programme genes. In ependymomas and choroid plexus tumours, reduced expression of FOXJ1 and its ciliogenesis programme are markers of poor outcome and are therefore useful biomarkers for assessing these tumours. Transitions in ciliogenesis define distinct differentiation states in ependymal and choroid plexus tumours with important implications for patient care. Copyright © 2015 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.