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2015 ; 7
(6
): 2980-98
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Recombinant Immunomodulating Lentogenic or Mesogenic Oncolytic Newcastle Disease
Virus for Treatment of Pancreatic Adenocarcinoma
#MMPMID26110582
Buijs P
; van Nieuwkoop S
; Vaes V
; Fouchier R
; van Eijck C
; van den Hoogen B
Viruses
2015[Jun]; 7
(6
): 2980-98
PMID26110582
show ga
Oncolytic Newcastle disease virus (NDV) might be a promising new therapeutic
agent for the treatment of pancreatic cancer. We evaluated recombinant NDVs
(rNDVs) expressing interferon (rNDV-hIFN?-F?) or an IFN antagonistic protein
(rNDV-NS1-F?), as well as rNDV with increased virulence (rNDV-F?aa) for oncolytic
efficacy in human pancreatic adenocarcinoma cells. Expression of additional
proteins did not hamper virus replication or cytotoxic effects on itself.
However, expression of interferon, but not NS1, resulted in loss of multicycle
replication. Conversely, increasing the virulence (rNDV-F?aa) resulted in
enhanced replication of the virus. Type I interferon was produced in high amounts
by all tumor cells inoculated with rNDV-hIFN? -F?, while inoculation with
rNDV-NS1-F? resulted in a complete block of interferon production in most cells.
Inoculation of human pancreatic adenocarcinoma cells with rNDV-F?aa caused
markedly more cytotoxicity compared to rNDV-F?, while inoculation with rNDV?-hIFN
-F? and rNDV-NS1-F? induced cytotoxic effects comparable to those induced by the
parental rNDV-F?. Evaluation in vivo using mice bearing subcutaneous pancreatic
cancer xenografts revealed that only intratumoral injection with rNDV-F?aa
resulted in regression of tumors. We conclude that although lentogenic rNDVs
harboring proteins that modulate the type I interferon pathway proteins do have
an oncolytic effect, a more virulent mesogenic rNDV might be needed to improve
oncolytic efficacy.
|Adenocarcinoma/pathology/*therapy
[MESH]
|Animals
[MESH]
|Cell Line, Tumor
[MESH]
|Heterografts
[MESH]
|Humans
[MESH]
|Mice, Nude
[MESH]
|Newcastle disease virus/genetics/*growth & development
[MESH]
|Oncolytic Virotherapy/*methods
[MESH]
|Oncolytic Viruses/genetics/*growth & development
[MESH]