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2015 ; 36
(4
): 2383-91
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Epigenetic regulation of human hedgehog interacting protein in glioma cell lines
and primary tumor samples
#MMPMID25416442
Shahi MH
; Zazpe I
; Afzal M
; Sinha S
; Rebhun RB
; Meléndez B
; Rey JA
; Castresana JS
Tumour Biol
2015[Apr]; 36
(4
): 2383-91
PMID25416442
show ga
Glioma constitutes one of the most common groups of brain tumors, and its
prognosis is influenced by different genetic and epigenetic modulations. In this
study, we demonstrated low or no expression of hedgehog interacting protein
(HHIP) in most of the cell lines and primary glioma tumor samples. We further
proceeded to promoter methylation study of this gene in the same cell lines and
primary tumor samples and found 87 % (7/8) HHIP methylation in glioblastoma cell
lines and 75 % (33/44) in primary tumor samples. These methylation pattern
correlates with low or unexpressed HHIP in both cell lines and primary tumor
samples. Our results suggest the possibility of epigenetic regulation of this
gene in glioma, similarly to medulloblastoma, gastric, hepatic, and pancreatic
cancers. Also, HHIP might be a diagnostic or prognostic marker in glioma and help
to the detection of these tumors in early stages of disease.