BMB Reports

생화학분자생물학회 (Korean Society for Biochemistry and Molecular Biology)
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Secreted decoy of insulin receptor is required for blood-brain and blood-retina barrier integrity in Drosophila

  • Jihyun Kim (Department of Integrative Bioscience and Biotechnology, College of Life Sciences, Sejong University) ;
  • Nuri Choi (Department of Integrative Bioscience and Biotechnology, College of Life Sciences, Sejong University) ;
  • Jeongsil Kim-Ha (Department of Integrative Bioscience and Biotechnology, College of Life Sciences, Sejong University)
  • 투고 : 2022.12.19
  • 심사 : 2022.12.29
  • 발행 : 2023.04.30
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초록

Glial cells play important roles during neurogenesis and in maintaining complex functions of the nervous system. Here, we report the characterization of a gene, Sdr, which contains a putative insulin-like growth factor receptor domain and is required to maintain critical nervous system functions in Drosophila. Sdr is expressed in glial cells during embryonic and larval stages of development, but its role in adult flies is poorly understood. As insulin signaling is important throughout the lifespan in human, we investigated the Sdr's role in adult flies. Our results demonstrate that Sdr is expressed on surface glial cells that surround the nervous system. Mutation of Sdr did not affect development but caused defects in locomotion and lifespan. Sdr mutants also showed increasingly severe defects in the blood-brain- and blood-retina-barriers as they aged. Therefore, we suggest a novel role of Sdr in maintaining the integrity of the blood-brain- and blood-retina-barriers in adult flies.

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과제정보

This work was supported by grant NRF-2017R1D1A1B06029547 funded by the Ministry of Education, Science, and Technology of Korea to J. Kim-Ha.

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