1
|
Kato-Unoki Y, Takai Y, Nagano Y, Matsunaga S, Enoki S, Takamura T, Kim S, Kinoshita M, Kitano T, Shimasaki Y, Oshima Y. Production of a tributyltin-binding protein 2 knockout mutant strain of Japanese medaka, Oryzias latipes. Mar Pollut Bull 2020; 160:111601. [PMID: 32871435 DOI: 10.1016/j.marpolbul.2020.111601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/22/2020] [Accepted: 08/23/2020] [Indexed: 06/11/2023]
Abstract
Tributyltin-binding proteins (TBT-bps), members of the lipocalin family, bind TBT in fish blood and are presumed to contribute to detoxification of TBT. Recent studies have shown that many fish species have TBT-bp genes, and that these genes are induced by stresses such as exposure to chemicals or fish pathogenic bacteria. However, the function of TBT-bps, and the mechanisms of their induction and detoxification activity are still unclear. Here, towards elucidating the functions of TBT-bp2, we produced a TBT-bp2 knockout (TBT-bp2-/-) strain of Japanese medaka, Oryzias latipes, by using the CRISPR/Cas9 system. Gene expression of the mutated TBT-bp2 was reduced, and the cDNA sequencing and predicted protein structure suggested possible loss of function. However, the fish could be grown under normal conditions. Exposure of the TBT-bp2-/- strain of medaka to various stresses in future experiments is expected to contribute to our understanding of this novel detoxification system in aquatic organisms.
Collapse
Affiliation(s)
- Yoko Kato-Unoki
- Center for Advanced Instrumental and Educational Supports, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Yuki Takai
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Yosuke Nagano
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Satoshi Matsunaga
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Shintaro Enoki
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Takumi Takamura
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan; Chemicals Evaluation and Research Institute, Japan, 3-2-7, Miyanojin, Kurume-shi, Fukuoka 839-0801, Japan
| | - Sangwan Kim
- Laboratory of Molecular Gene Technology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Masato Kinoshita
- Department of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Takeshi Kitano
- Department of Biological Sciences, Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Yohei Shimasaki
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Yuji Oshima
- Laboratory of Marine Environmental Science, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan; Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan.
| |
Collapse
|