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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Neurooncol
2015 ; 125
(2
): 307-15
Nephropedia Template TP
gab.com Text
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English Wikipedia
Is CMV a target in pediatric glioblastoma? Expression of CMV proteins, pp65 and
IE1-72 and CMV nucleic acids in a cohort of pediatric glioblastoma patients
#MMPMID26341370
Wakefield A
; Pignata A
; Ghazi A
; Ashoori A
; Hegde M
; Landi D
; Gray T
; Scheurer ME
; Chintagumpala M
; Adesina A
; Gottschalk S
; Hicks J
; Powell SZ
; Ahmed N
J Neurooncol
2015[Nov]; 125
(2
): 307-15
PMID26341370
show ga
While the 5-year overall survival is better in pediatric than in adult patients
diagnosed with glioblastoma (GBM), outcomes in children remain very poor.
Understanding the mechanisms of tumorigenesis and tumor propagation can identify
therapeutic targets to improve these outcomes. Human cytomegalovirus (CMV)
proteins and nucleic acids are present in the majority of adult GBM. Indeed, CMV
is emerging as a potential glioma-associated target for anti-CMV agents and
cellular therapeutics. Furthermore, CMV appears to contribute to GBM's malignant
phenotype, although its role in tumorigenesis is less certain. In this cohort of
25 serially diagnosed pediatric GBMs, the largest described cohort to date, we
used immunohistochemical staining and in situ hybridization to show the presence
of CMV antigens pp65 and IE1-72 as well as CMV nucleic acids, respectively. Our
cohort indicated either CMV antigen pp65 or IE1-72 was present in approximately
67 % of pediatric GBM samples. The majority of samples stained positive for
either CMV antigen showing a cytoplasmic pattern in 25-50 % of cells within the
sample at a moderate intensity, while a few samples showed nuclear staining and
higher grade/intensity. Of 16 samples where in situ hybridization was performed,
13 (81 %) showed specific staining using a CMV genome specific probe cocktail.
ISH positive samples showed high concordance with being pp65 or IE1-72 positive.
These findings, paired with the association of CMV expression with poor prognosis
and overall survival, indicate the need to further investigate how these antigens
are promoting tumor growth and preventing cell death. Also, the expression of
these antigens in a majority of tumor tissues should be considered for
immunotherapeutic targets in cases of pediatric GBM.