TY  - JOUR
A1  - Wolfahrt, Sonja
A1  - Herman, Sandra
A1  - Scholz, Claus-Jürgen
A1  - Sauer, Georg
A1  - Deissler, Helmut
T1  - Identification of alternative transcripts of rat CD9 expressed by tumorigenic neural cell lines and in normal tissues
JF  - Genetics and Molecular Biology
N2  - CD9 is the best-studied member of the tetraspanin family of transmembrane proteins. It is involved in various fundamental cellular processes and its altered expression is a characteristic of malignant cells of different origins. Despite numerous investigations confirming its fundamental role, the heterogeneity of CD9 or other tetraspanin proteins was considered only to be caused by posttranslational modification, rather than alternative splicing. Here we describe the first identification of CD9 transcript variants expressed by cell lines derived from fetal rat brain cells. Variant mRNA-B lacks a potential translation initiation codon in the alternative exon 1 and seems to be characteristic of the tumorigenic BT cell lines. In contrast, variant mRNA-C can be translated from a functional initiation codon located in its extended exon 2, and substantial amounts of this form detected in various tissues suggest a contribution to CD9 functions. From the alternative sequence of variant C, a different membrane topology ( 5 transmembrane domains) and a deviating spectrum of functions can be expected.
KW  - tetraspanin
KW  - CD9
KW  - antigen
KW  - cancer
KW  - noncoding RNAs
KW  - nervous system
KW  - poor prognosis
KW  - tetraspanin protein
KW  - transcript
KW  - splice variant
KW  - membrane topology
Y1  - 2013
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-131801
VL  - 36
IS  - 2
ER  - 
TY  - JOUR
A1  - Ascierto, Maria Libera
A1  - Worschech, Andrea
A1  - Yu, Zhiya
A1  - Adams, Sharon
A1  - Reinboth, Jennifer
A1  - Chen, Nanhai G
A1  - Pos, Zoltan
A1  - Roychoudhuri, Rahul
A1  - Di Pasquale, Giovanni
A1  - Bedognetti, Davide
A1  - Uccellini, Lorenzo
A1  - Rossano, Fabio
A1  - Ascierto, Paolo A
A1  - Stroncek, David F
A1  - Restifo, Nicholas P
A1  - Wang, Ena
A1  - Szalay, Aladar A
A1  - Marincola, Francesco M
T1  - Permissivity of the NCI-60 cancer cell lines to oncolytic Vaccinia Virus GLV-1h68
JF  - BMC Cancer
N2  - Background: 

Oncolytic viral therapy represents an alternative therapeutic strategy for the treatment of cancer. We previously described GLV-1h68, a modified Vaccinia Virus with exclusive tropism for tumor cells, and we observed a cell line-specific relationship between the ability of GLV-1h68 to replicate in vitro and its ability to colonize and eliminate tumor in vivo. 

Methods: 

In the current study we surveyed the in vitro permissivity to GLV-1h68 replication of the NCI-60 panel of cell lines. Selected cell lines were also tested for permissivity to another Vaccinia Virus and a vesicular stomatitis virus (VSV) strain. In order to identify correlates of permissity to viral infection, we measured transcriptional profiles of the cell lines prior infection. 

Results: 

We observed highly heterogeneous permissivity to VACV infection amongst the cell lines. The heterogeneity of permissivity was independent of tissue with the exception of B cell derivation. Cell lines were also tested for permissivity to another Vaccinia Virus and a vesicular stomatitis virus (VSV) strain and a significant correlation was found suggesting a common permissive phenotype. While no clear transcriptional pattern could be identified as predictor of permissivity to infection, some associations were observed suggesting multifactorial basis permissivity to viral infection. 

Conclusions: 

Our findings have implications for the design of oncolytic therapies for cancer and offer insights into the nature of permissivity of tumor cells to viral infection.
KW  - gene-therapy
KW  - adenovirus
KW  - receptor
KW  - identification
KW  - infection
KW  - CD9
KW  - panel
Y1  - 2011
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-141503
VL  - 11
IS  - 451
ER  -