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Li F, Long Y, Xie J, Ren J, Zhou T, Song G, Li Q, Cui Z. Generation of GCaMP6s-Expressing Zebrafish to Monitor Spatiotemporal Dynamics of Calcium Signaling Elicited by Heat Stress. Int J Mol Sci 2021; 22:ijms22115551. [PMID: 34074030 PMCID: PMC8197303 DOI: 10.3390/ijms22115551] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 01/09/2023] Open
Abstract
The ability of organisms to quickly sense and transduce signals of environmental stresses is critical for their survival. Ca2+ is a versatile intracellular messenger involved in sensing a wide variety of stresses and regulating the subsequent cellular responses. So far, our understanding for calcium signaling was mostly obtained from ex vivo tissues and cultured cell lines, and the in vivo spatiotemporal dynamics of stress-triggered calcium signaling in a vertebrate remains to be characterized. Here, we describe the generation and characterization of a transgenic zebrafish line with ubiquitous expression of GCaMP6s, a genetically encoded calcium indicator (GECI). We developed a method to investigate the spatiotemporal patterns of Ca2+ events induced by heat stress. Exposure to heat stress elicited immediate and transient calcium signaling in developing zebrafish. Cells extensively distributed in the integument of the head and body trunk were the first batch of responders and different cell populations demonstrated distinct response patterns upon heat stress. Activity of the heat stress-induced calcium signaling peaked at 30 s and swiftly decreased to near the basal level at 120 s after the beginning of exposure. Inhibition of the heat-induced calcium signaling by LaCl3 and capsazepine and treatment with the inhibitors for CaMKII (Ca²2/calmodulin-dependent protein kinase II) and HSF1 (Heat shock factor 1) all significantly depressed the enhanced heat shock response (HSR). Together, we delineated the spatiotemporal dynamics of heat-induced calcium signaling and confirmed functions of the Ca2+-CaMKII-HSF1 pathway in regulating the HSR in zebrafish.
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Affiliation(s)
- Fengyang Li
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China;
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (J.X.); (T.Z.); (G.S.); (Q.L.)
| | - Yong Long
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (J.X.); (T.Z.); (G.S.); (Q.L.)
- Correspondence: , (Y.L.); (Z.C.); Tel.: +86-27-68780100 (Y.L.); +86-27-68780090 (Z.C.)
| | - Juhong Xie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (J.X.); (T.Z.); (G.S.); (Q.L.)
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Ren
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China;
| | - Tong Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (J.X.); (T.Z.); (G.S.); (Q.L.)
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guili Song
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (J.X.); (T.Z.); (G.S.); (Q.L.)
| | - Qing Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (J.X.); (T.Z.); (G.S.); (Q.L.)
| | - Zongbin Cui
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China;
- The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing 100101, China
- Correspondence: , (Y.L.); (Z.C.); Tel.: +86-27-68780100 (Y.L.); +86-27-68780090 (Z.C.)
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