In vitro study on signal transduction in mice spiral ganglion cell stimulated by multi-wavelength laser based on calcium imaging
10.3760/cma.j.issn.1673-0860.2020.02.009
- VernacularTitle: 基于钙离子成像的多波长激光诱发体外小鼠螺旋神经节细胞信号转导的实验研究
- Author:
Na WANG
1
,
2
;
Xinyu HUO
3
;
Anting XU
1
,
2
;
Chengcheng LIU
4
;
Xiulin ZHANG
4
;
Ming ZENG
3
;
Lan TIAN
1
,
5
Author Information
1. Advanced Medical Research Institute, Shandong University, Jinan 250012, China
2. Department of Otorhinolaryngology Head and Neck Surgery, the Second Hospital of Shandong University, Jinan 250033, China
3. School of Microelectronics, Shandong University, Jinan 250101, China
4. Department of Otorhinolaryngology Head and Neck Surgery, the Second Hospital of Shandong University, Jinan 250033, China
5. School of Microelectronics, Shandong University, Jinan 250101, China
- Publication Type:Journal Article
- Keywords:
Calcium ion imaging;
Lasers;
Spiral ganglion
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2020;55(2):133-138
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To research the auditory nerve transduction effects under multi-wavelength pulsed laser stimulations within a safe and acceptable signal range.
Methods:The real-time detection of intracellular calcium concentration was adopted by specific fluorescent indicator staining based on calcium imager. The spiral ganglion cells of mice were cultured in vitro. After fluorescent indicating, morphologic observation under optical microscope, Fura-2 calcium ion fluorescence excitation, intact morphology cells selection, fixing the optical fiber, the spiral ganglion cells were irradiated by different wavelength laser, including visible light (450 nm) and near infrared light (808 nm,1 065 nm). The intracellular calcium concentration was monitored by calcium ion imaging.
Results:When 450 nm laser stimulated spiral ganglion cells, the intracellular calcium concentration was strongly increased, however, for other wavelength laser stimulation, there was no obvious relative response. And the sensitivity expression of the nerve cells under laser was related with the location of laser fiber. Cells closer to the fiber produced more obvious changes in calcium ion concentration, while for cells farther away from the fiber, the change amplitudes were weaker although the number of changes in calcium ion concentration was consistent.
Conclusion:The spiral ganglion cells of mice can induce a signal transduction response under the action of laser, and the response has laser wavelength selectivity.
