Open Access13‐Cis retinoic acid can enhance the antitumor activity of non‐replicating S endai virus particle against neuroblastoma
Author(s) -
Nomura Motonari,
Shimbo Takashi,
Miyamoto Yasuhide,
Fukuzawa Masahiro,
Kaneda Yasufumi
Publication year - 2013
Publication title -
cancer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.035
H-Index - 141
eISSN - 1349-7006
pISSN - 1347-9032
DOI - 10.1111/cas.12063
Subject(s) - sendai virus , neuroblastoma , in vitro , in vivo , oncolytic virus , cancer research , retinoic acid , cell culture , virus , medicine , virology , chemistry , biology , biochemistry , microbiology and biotechnology , genetics
Hemagglutinating virus of J apan‐envelope ( HVJ ‐ E ) is a drug delivery vector based on inactivated Sendai virus. Recently, antitumor activities were found for HVJ ‐ E itself and clinical trials of HVJ ‐ E for some malignant tumors are now ongoing. We investigated the in vitro and in vivo antitumor effects of HVJ ‐E against neuroblastoma, which is one of the most common malignant solid tumors in childhood. The sensitivity of human neuroblastoma cell lines to HVJ ‐ E correlated with the expression level of gangliosides, Sialylparagloboside ( SPG ) and GD 1a, receptors for HVJ . Among the cell lines, SK ‐ N ‐ SH was the most sensitive to HVJ ‐ E in vitro and total SPG and GD 1a expression was the highest. Complete eradication of subcutaneous tumors derived from SK ‐ N ‐ SH cells was achieved by intratumoral injection of HVJ ‐ E in SCID mice and no recurrence was observed for more than 300 days after HVJ ‐E inoculation. In contrast, NB 1 cells expressed the lowest amount of GD 1a and SPG and were resistant to HVJ ‐ E in vitro . The expression of GD 1a increased by 13‐cis retinoic acid (13c RA ), which is a therapeutic drug for high risk neuroblastoma, thus leading to an improved sensitivity to HVJ ‐ E in vitro . Only growth inhibition of the subcutaneous tumors derived from NB 1 cells was achieved by HVJ ‐ E in the SCID mice, but the combination of 13c RA and HVJ ‐ E could achieve partial eradication of the xenograft and also lead to an improved prognosis. In conclusion, HVJ ‐ E is a promising therapeutic modality for neuroblastoma and 13c RA can be used as an adjuvant to HVJ ‐ E .