{"intvolume":"         8","day":"21","article_processing_charge":"No","title":"Ephrin-B3 controls excitatory synapse density through cell-cell competition for EphBs","file_date_updated":"2020-07-14T12:47:19Z","date_created":"2019-03-10T22:59:20Z","language":[{"iso":"eng"}],"oa":1,"abstract":[{"text":"Cortical networks are characterized by sparse connectivity, with synapses found at only a subset of axo-dendritic contacts. Yet within these networks, neurons can exhibit high connection probabilities, suggesting that cell-intrinsic factors, not proximity, determine connectivity. Here, we identify ephrin-B3 (eB3) as a factor that determines synapse density by mediating a cell-cell competition that requires ephrin-B-EphB signaling. In a microisland culture system designed to isolate cell-cell competition, we find that eB3 determines winning and losing neurons in a contest for synapses. In a Mosaic Analysis with Double Markers (MADM) genetic mouse model system in vivo the relative levels of eB3 control spine density in layer 5 and 6 neurons. MADM cortical neurons in vitro reveal that eB3 controls synapse density independently of action potential-driven activity. Our findings illustrate a new class of competitive mechanism mediated by trans-synaptic organizing proteins which control the number of synapses neurons receive relative to neighboring neurons.","lang":"eng"}],"pmid":1,"oa_version":"Published Version","date_published":"2019-02-21T00:00:00Z","department":[{"_id":"SiHi"}],"file":[{"file_id":"6098","access_level":"open_access","checksum":"7b0800d003f14cd06b1802dea0c52941","creator":"dernst","date_updated":"2020-07-14T12:47:19Z","date_created":"2019-03-11T16:15:37Z","file_size":7260753,"content_type":"application/pdf","relation":"main_file","file_name":"2019_eLife_Henderson.pdf"}],"article_number":"e41563","publisher":"eLife Sciences Publications","type":"journal_article","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","short":"CC BY (4.0)","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"quality_controlled":"1","doi":"10.7554/eLife.41563","year":"2019","_id":"6091","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","external_id":{"pmid":["30789343"],"isi":["000459380600001"]},"author":[{"full_name":"Henderson, Nathan T.","last_name":"Henderson","first_name":"Nathan T."},{"first_name":"Sylvain J.","last_name":"Le Marchand","full_name":"Le Marchand, Sylvain J."},{"full_name":"Hruska, Martin","last_name":"Hruska","first_name":"Martin"},{"orcid":"0000-0003-2279-1061","id":"37B36620-F248-11E8-B48F-1D18A9856A87","last_name":"Hippenmeyer","first_name":"Simon","full_name":"Hippenmeyer, Simon"},{"full_name":"Luo, Liqun","first_name":"Liqun","last_name":"Luo"},{"last_name":"Dalva","first_name":"Matthew B.","full_name":"Dalva, Matthew B."}],"date_updated":"2023-08-24T14:50:50Z","has_accepted_license":"1","status":"public","volume":8,"ddc":["570"],"scopus_import":"1","month":"02","publication":"eLife","citation":{"chicago":"Henderson, Nathan T., Sylvain J. Le Marchand, Martin Hruska, Simon Hippenmeyer, Liqun Luo, and Matthew B. Dalva. “Ephrin-B3 Controls Excitatory Synapse Density through Cell-Cell Competition for EphBs.” <i>ELife</i>. eLife Sciences Publications, 2019. <a href=\"https://doi.org/10.7554/eLife.41563\">https://doi.org/10.7554/eLife.41563</a>.","ama":"Henderson NT, Le Marchand SJ, Hruska M, Hippenmeyer S, Luo L, Dalva MB. Ephrin-B3 controls excitatory synapse density through cell-cell competition for EphBs. <i>eLife</i>. 2019;8. doi:<a href=\"https://doi.org/10.7554/eLife.41563\">10.7554/eLife.41563</a>","apa":"Henderson, N. T., Le Marchand, S. J., Hruska, M., Hippenmeyer, S., Luo, L., &#38; Dalva, M. B. (2019). Ephrin-B3 controls excitatory synapse density through cell-cell competition for EphBs. <i>ELife</i>. eLife Sciences Publications. <a href=\"https://doi.org/10.7554/eLife.41563\">https://doi.org/10.7554/eLife.41563</a>","ieee":"N. T. Henderson, S. J. Le Marchand, M. Hruska, S. Hippenmeyer, L. Luo, and M. B. Dalva, “Ephrin-B3 controls excitatory synapse density through cell-cell competition for EphBs,” <i>eLife</i>, vol. 8. eLife Sciences Publications, 2019.","short":"N.T. Henderson, S.J. Le Marchand, M. Hruska, S. Hippenmeyer, L. Luo, M.B. Dalva, ELife 8 (2019).","ista":"Henderson NT, Le Marchand SJ, Hruska M, Hippenmeyer S, Luo L, Dalva MB. 2019. Ephrin-B3 controls excitatory synapse density through cell-cell competition for EphBs. eLife. 8, e41563.","mla":"Henderson, Nathan T., et al. “Ephrin-B3 Controls Excitatory Synapse Density through Cell-Cell Competition for EphBs.” <i>ELife</i>, vol. 8, e41563, eLife Sciences Publications, 2019, doi:<a href=\"https://doi.org/10.7554/eLife.41563\">10.7554/eLife.41563</a>."},"isi":1,"publication_status":"published"}