PMID- 33087851 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20210621 IS - 2399-3642 (Electronic) IS - 2399-3642 (Linking) VI - 3 IP - 1 DP - 2020 Oct 21 TI - teiresias, a Fruitless target gene encoding an immunoglobulin-superfamily transmembrane protein, is required for neuronal feminization in Drosophila. PG - 598 LID - 10.1038/s42003-020-01327-z [doi] LID - 598 AB - This study aims at identifying transcriptional targets of FruitlessBM (FruBM), which represents the major isoform of male-specific FruM transcription factors that induce neural sexual dimorphisms. A promoter of the axon-guidance factor gene robo1 carries the 16-bp palindrome motif Pal1, to which FruM binds. Our genome-wide search for Pal1-homologous sequences yielded ~200 candidate genes. Among these, CG17716 potentially encodes a transmembrane protein with extracellular immunoglobulin (Ig)-like domains similar to Robo1. Indeed, FruBM overexpression reduced CG17716 mRNA and protein expression. In the fru-expressing mAL neuron cluster exhibiting sexual dimorphism, we found that CG17716 knockdown in female neurons completely transformed all neurites to the male-type. Conversely, CG17716 overexpression suppressed male-specific midline crossing of fru-expressing sensory axons. We renamed CG17716 teiresias (tei) based on this feminizing function. We hypothesize that Tei interacts with other Ig superfamily transmembrane proteins, including Robo1, to feminize the neurite patterns in females, whereas FruBM represses tei transcription in males. FAU - Sato, Kosei AU - Sato K AUID- ORCID: 0000-0002-4463-1440 AD - Neuro-Network Evolution Project, Advanced ICT Research Institute, National Institute of Information and Communications Technology, Kobe, Japan. FAU - Ito, Hiroki AU - Ito H AD - Division of Neurogenetics, Tohoku University Graduate School of Life Sciences, Sendai, Japan. FAU - Yamamoto, Daisuke AU - Yamamoto D AUID- ORCID: 0000-0002-4623-0106 AD - Neuro-Network Evolution Project, Advanced ICT Research Institute, National Institute of Information and Communications Technology, Kobe, Japan. daichan@nict.go.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201021 PL - England TA - Commun Biol JT - Communications biology JID - 101719179 RN - 0 (Drosophila Proteins) RN - 0 (Nerve Tissue Proteins) RN - 0 (Receptors, Immunologic) RN - 0 (Transcription Factors) RN - 0 (fru protein, Drosophila) SB - IM MH - Animals MH - Axons/metabolism MH - Base Sequence MH - Binding Sites MH - Brain/metabolism MH - Drosophila/*genetics/metabolism MH - Drosophila Proteins/genetics/metabolism MH - Female MH - Feminization/*genetics MH - Fluorescent Antibody Technique MH - Gene Expression Regulation MH - Genetic Loci MH - Interneurons/metabolism MH - Male MH - Nerve Tissue Proteins/metabolism MH - Neurons/*metabolism MH - Protein Binding MH - Receptors, Immunologic/*genetics MH - Sex Characteristics MH - Transcription Factors/metabolism PMC - PMC7578032 COIS- The authors declare no competing interests. EDAT- 2020/10/23 06:00 MHDA- 2021/06/22 06:00 PMCR- 2020/10/21 CRDT- 2020/10/22 05:33 PHST- 2020/03/08 00:00 [received] PHST- 2020/09/25 00:00 [accepted] PHST- 2020/10/22 05:33 [entrez] PHST- 2020/10/23 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/10/21 00:00 [pmc-release] AID - 10.1038/s42003-020-01327-z [pii] AID - 1327 [pii] AID - 10.1038/s42003-020-01327-z [doi] PST - epublish SO - Commun Biol. 2020 Oct 21;3(1):598. doi: 10.1038/s42003-020-01327-z.