PMID- 17178422 OWN - NLM STAT- MEDLINE DCOM- 20070612 LR - 20191210 IS - 0165-0270 (Print) IS - 0165-0270 (Linking) VI - 161 IP - 2 DP - 2007 Apr 15 TI - Verification of functional AAV-mediated neurotrophic and anti-apoptotic factor expression. PG - 291-300 AB - The use of viral vectors for gene delivery offer many advantages for both basic research and therapeutic application through the continuous expression of a gene product within a target region. It is vital however that any gene product is correctly expressed in a biologically active form, and this should be confirmed prior to large scale in vivo studies. Using adeno-associated viral (AAV) vectors to direct the expression of either a neurotrophic factor or an anti-apoptotic protein, we have developed a range of in vitro assays to verify functional transgenic protein expression. Brain-derived neurotropic factor (BDNF) activity was confirmed by demonstrating enhanced generation of GABAergic neurons in embryonic (E15) striatal cultures and AAV-mediated glial-derived neurotrophic factor (GDNF) function using an assay for dopaminergic differentiation of embryonic (E14) ventral mesencephalic cultures. To assess functional anti-apoptotic factor expression we designed cell-survival assays, using embryonic cortical cultures to confirm Bcl-x(L) activity and the HT1080 cell-line for X-linked inhibitor of apoptosis protein (XIAP) activity following AAV-mediated expression. This study demonstrates that the use of functional assays provides valuable confirmation of desired biotherapeutic expression prior to extensive investigation with new gene delivery vectors. FAU - Kells, Adrian P AU - Kells AP AD - Neural Repair and Neurogenesis Laboratory, Department of Pharmacology and Clinical Pharmacology, The University of Auckland, Auckland, New Zealand. FAU - Henry, Rebecca A AU - Henry RA FAU - Hughes, Stephanie M AU - Hughes SM FAU - Connor, Bronwen AU - Connor B LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PT - Validation Study DEP - 20061218 PL - Netherlands TA - J Neurosci Methods JT - Journal of neuroscience methods JID - 7905558 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Glial Cell Line-Derived Neurotrophic Factor) RN - 0 (Inhibitor of Apoptosis Proteins) RN - 0 (Nerve Growth Factors) SB - IM MH - Adenoviridae/*genetics MH - Apoptosis/*physiology MH - Biological Assay/*methods MH - Brain-Derived Neurotrophic Factor/genetics/metabolism MH - Genetic Vectors/genetics MH - Glial Cell Line-Derived Neurotrophic Factor/genetics/metabolism MH - Inhibitor of Apoptosis Proteins/genetics/*metabolism MH - Nerve Growth Factors/genetics/*metabolism MH - Transfection/*methods RF - 31 EDAT- 2006/12/21 09:00 MHDA- 2007/06/15 09:00 CRDT- 2006/12/21 09:00 PHST- 2006/08/17 00:00 [received] PHST- 2006/11/09 00:00 [revised] PHST- 2006/11/10 00:00 [accepted] PHST- 2006/12/21 09:00 [pubmed] PHST- 2007/06/15 09:00 [medline] PHST- 2006/12/21 09:00 [entrez] AID - S0165-0270(06)00564-4 [pii] AID - 10.1016/j.jneumeth.2006.11.006 [doi] PST - ppublish SO - J Neurosci Methods. 2007 Apr 15;161(2):291-300. doi: 10.1016/j.jneumeth.2006.11.006. Epub 2006 Dec 18.