Abstract:
:Conditionally replicating adenoviruses (CRAds) represent a promising new platform for anticancer therapy. However, CRAds have been evaluated little in hematopoietic malignancies because of the lack of expression of coxsackie adenovirus receptor (CAR) on their cell surface. In this study, we showed that CAR was expressed on two types of lymphoblastic leukemia cell lines and primary leukemia cells, and that ZD55, a CRAd, exerted a potent antileukemia effect in vitro and in vivo. Furthermore, ZD55 expressing melanoma differentiation-associated gene-7/interleukin-24 (ZD55-IL-24) elicited significant enhanced antileukemia activity comparing with ZD55, concomitant with upregulation of RNA-dependent protein kinase R (PKR), increased phosphorylation of p38 mitogen-activated protein kinase (MAPK), and induction of endoplasmic reticulum (ER) stress. These data for the first time indicate that MDA-7/IL-24 exerts its antitumor effect on leukemia cells via multiple pathways, and suggest that oncolytic adenoviruses, ZD55 and ZD55-IL-24 could potentially be used against CAR-expressing hematological malignancies such as B-lymphoblastic leukemia/lymphoma and some myeloid leukemia.
journal_name
Leukemiajournal_title
Leukemiaauthors
Qian W,Liu J,Tong Y,Yan S,Yang C,Yang M,Liu Xdoi
10.1038/sj.leu.2405034subject
Has Abstractpub_date
2008-02-01 00:00:00pages
361-9issue
2eissn
0887-6924issn
1476-5551pii
2405034journal_volume
22pub_type
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