PMID- 27571575 OWN - NLM STAT- MEDLINE DCOM- 20170818 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 11 IP - 8 DP - 2016 TI - Viral Vector-Based Dissection of Marmoset GFAP Promoter in Mouse and Marmoset Brains. PG - e0162023 LID - 10.1371/journal.pone.0162023 [doi] LID - e0162023 AB - Adeno-associated virus (AAV) vectors are small in diameter, diffuse easily in the brain, and represent a highly efficient means by which to transfer a transgene to the brain of a large animal. A major demerit of AAV vectors is their limited accommodation capacity for transgenes. Thus, a compact promoter is useful when delivering large transgenes via AAV vectors. In the present study, we aimed to identify the shortest astrocyte-specific GFAP promoter region that could be used for AAV-vector-mediated transgene expression in the marmoset brain. The 2.0-kb promoter region upstream of the GFAP gene was cloned from the marmoset genome, and short promoters (1.6 kb, 1.4 kb, 0.6 kb, 0.3 kb and 0.2 kb) were obtained by progressively deleting the original 2.0-kb promoter from the 5' end. The short promoters were screened in the mouse cerebellum in terms of their strength and astrocyte specificity. We found that the 0.3-kb promoter maintained 40% of the strength of the original 2.0-kb promoter, and approximately 90% of its astrocyte specificity. These properties were superior to those of the 1.4-kb, 0.6-kb (20% promoter strength) and 0.2-kb (70% astrocyte specificity) promoters. Then, we verified whether the 0.3-kb GFAP promoter retained astrocyte specificity in the marmoset cerebral cortex. Injection of viral vectors carrying the 0.3-kb marmoset GFAP promoter specifically transduced astrocytes in both the cerebral cortex and cerebellar cortex of the marmoset. These results suggest that the compact 0.3-kb promoter region serves as an astrocyte-specific promoter in the marmoset brain, which permits us to express a large gene by AAV vectors that have a limited accommodation capacity. FAU - Shinohara, Yoichiro AU - Shinohara Y AD - Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. AD - Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. FAU - Konno, Ayumu AU - Konno A AD - Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. FAU - Takahashi, Nobutaka AU - Takahashi N AD - Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. FAU - Matsuzaki, Yasunori AU - Matsuzaki Y AD - Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. FAU - Kishi, Shoji AU - Kishi S AD - Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. FAU - Hirai, Hirokazu AU - Hirai H AD - Department of Neurophysiology & Neural Repair, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan. AD - Research Program for Neural Signalling, Division of Endocrinology, Metabolism and Signal Research, Gunma University Initiative for Advanced Research, Maebashi, Gunma, Japan. LA - eng PT - Journal Article DEP - 20160829 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Glial Fibrillary Acidic Protein) SB - IM MH - Animals MH - Brain/*metabolism MH - Callithrix MH - Cerebellum/metabolism MH - Genetic Vectors/genetics MH - Glial Fibrillary Acidic Protein/*genetics MH - HEK293 Cells MH - Humans MH - Immunohistochemistry MH - Lentivirus/genetics MH - Mice MH - Mice, Inbred C57BL MH - Promoter Regions, Genetic/*genetics PMC - PMC5003399 COIS- The authors have declared that no competing interests exist. EDAT- 2016/08/30 06:00 MHDA- 2017/08/19 06:00 PMCR- 2016/08/29 CRDT- 2016/08/30 06:00 PHST- 2016/06/08 00:00 [received] PHST- 2016/08/16 00:00 [accepted] PHST- 2016/08/30 06:00 [entrez] PHST- 2016/08/30 06:00 [pubmed] PHST- 2017/08/19 06:00 [medline] PHST- 2016/08/29 00:00 [pmc-release] AID - PONE-D-16-19805 [pii] AID - 10.1371/journal.pone.0162023 [doi] PST - epublish SO - PLoS One. 2016 Aug 29;11(8):e0162023. doi: 10.1371/journal.pone.0162023. eCollection 2016.