PMID- 26053860 OWN - NLM STAT- MEDLINE DCOM- 20160304 LR - 20201217 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 6 DP - 2015 TI - A Distinct Perisynaptic Glial Cell Type Forms Tripartite Neuromuscular Synapses in the Drosophila Adult. PG - e0129957 LID - 10.1371/journal.pone.0129957 [doi] LID - e0129957 AB - Previous studies of Drosophila flight muscle neuromuscular synapses have revealed their tripartite architecture and established an attractive experimental model for genetic analysis of glial function in synaptic transmission. Here we extend these findings by defining a new Drosophila glial cell type, designated peripheral perisynaptic glia (PPG), which resides in the periphery and interacts specifically with fine motor axon branches forming neuromuscular synapses. Identification and specific labeling of PPG was achieved through cell type-specific RNAi-mediated knockdown (KD) of a glial marker, Glutamine Synthetase 2 (GS2). In addition, comparison among different Drosophila neuromuscular synapse models from adult and larval developmental stages indicated the presence of tripartite synapses on several different muscle types in the adult. In contrast, PPG appear to be absent from larval body wall neuromuscular synapses, which do not exhibit a tripartite architecture but rather are imbedded in the muscle plasma membrane. Evolutionary conservation of tripartite synapse architecture and peripheral perisynaptic glia in vertebrates and Drosophila suggests ancient and conserved roles for glia-synapse interactions in synaptic transmission. FAU - Strauss, Alexandra L AU - Strauss AL AD - Department of Biology and Center for Molecular and Cellular Neuroscience, The Pennsylvania State University, University Park, Pennsylvania, United States of America. FAU - Kawasaki, Fumiko AU - Kawasaki F AD - Department of Biology and Center for Molecular and Cellular Neuroscience, The Pennsylvania State University, University Park, Pennsylvania, United States of America. FAU - Ordway, Richard W AU - Ordway RW AD - Department of Biology and Center for Molecular and Cellular Neuroscience, The Pennsylvania State University, University Park, Pennsylvania, United States of America. LA - eng GR - R01 NS065983/NS/NINDS NIH HHS/United States GR - 1R01NS065983-01A1/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20150608 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Drosophila Proteins) RN - 0 (GAL4 protein, Drosophila) RN - 0 (Transcription Factors) SB - IM MH - Animals MH - Blood-Brain Barrier/metabolism MH - Drosophila/*physiology MH - Drosophila Proteins/metabolism MH - Gene Expression MH - Gene Knockdown Techniques MH - Neuroglia/*metabolism MH - Neuromuscular Junction/*metabolism MH - Synaptic Transmission MH - Transcription Factors/metabolism PMC - PMC4459971 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/06/09 06:00 MHDA- 2016/03/05 06:00 PMCR- 2015/06/08 CRDT- 2015/06/09 06:00 PHST- 2014/11/10 00:00 [received] PHST- 2015/05/14 00:00 [accepted] PHST- 2015/06/09 06:00 [entrez] PHST- 2015/06/09 06:00 [pubmed] PHST- 2016/03/05 06:00 [medline] PHST- 2015/06/08 00:00 [pmc-release] AID - PONE-D-14-50658 [pii] AID - 10.1371/journal.pone.0129957 [doi] PST - epublish SO - PLoS One. 2015 Jun 8;10(6):e0129957. doi: 10.1371/journal.pone.0129957. eCollection 2015.