| Title: | CD36 is expressed in a defined subpopulation of neurons in the olfactory epithelium |
| Author(s): | Xavier AM; Ludwig RG; Nagai MH; de Almeida TJ; Watanabe HM; Hirata MY; Rosenstock TR; Papes F; Malnic B; Glezer I; |
| Address: | "Department of Biochemistry, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Brazil. Department of Biochemistry, Instituto de Quimica, Universidade de Sao Paulo, Brazil. Department of Genetics and Evolution, Instituto de Biologia, Universidade de Campinas, Brazil. Department of Physiological Science, Santa Casa de Sao Paulo Medical School, Brazil" |
| ISSN/ISBN: | 2045-2322 (Electronic) 2045-2322 (Linking) |
| Abstract: | "The sensory neurons in the olfactory epithelium (OSNs) are equipped with a large repertoire of olfactory receptors and the associated signal transduction machinery. In addition to the canonical OSNs, which express odorant receptors (ORs), the epithelium contains specialized subpopulations of sensory neurons that can detect specific information from environmental cues and relay it to relevant neuronal circuitries. Here we describe a subpopulation of mature OSNs in the main olfactory epithelium (MOE) which expresses CD36, a multifunctional receptor involved in a series of biological processes, including sensory perception of lipid ligands. The Cd36 expressing neurons coexpress markers of mature OSNs and are dispersed throughout the MOE. Unlike several ORs analyzed in our study, we found frequent coexpression of the OR Olfr287 in these neurons, suggesting that only a specific set of ORs may be coexpressed with CD36 in OSNs. We also show that CD36 is expressed in the cilia of OSNs, indicating a possible role in odorant detection. CD36-deficient mice display no signs of gross changes in the organization of the olfactory epithelium, but show impaired preference for a lipid mixture odor. Our results show that CD36-expressing neurons represent a distinct population of OSNs, which may have specific functions in olfaction" |
| Keywords: | "Animals CD36 Antigens/deficiency/*genetics Cilia/drug effects/metabolism GTP-Binding Protein alpha Subunits/*genetics/metabolism Gene Expression Regulation Lipids/pharmacology Male Mice Mice, Knockout Odorants/analysis Olfactory Marker Protein/*genetics/m;" |
| Notes: | "MedlineXavier, Andre Machado Ludwig, Raissa Guimaraes Nagai, Maira Harume de Almeida, Tiago Jonas Watanabe, Hebe Mizuno Hirata, Marcio Yukio Rosenstock, Tatiana Rosado Papes, Fabio Malnic, Bettina Glezer, Isaias eng Research Support, Non-U.S. Gov't England 2016/05/06 Sci Rep. 2016 May 5; 6:25507. doi: 10.1038/srep25507" |
