开发一种复合物光探针,用于标记和跟踪FGF21蛋白质
Lili Zhang1, Shaobo Du2, Wangye Ji1
1College of Life Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China.
Scientific reports
|April 10, 2025
概括
一种新型的 (III) 复合体,IrCN,作为一个"启动"的光探针,用于标记纤维细胞生长因子21 (FGF21). 这种探测器可以进行敏感蛋白跟踪和活细胞成像,同时保持生物活动.
科学领域:
- 生物化学 生物化学
- 化学生物学 化学生物学
- 生物医学成像技术 生物医学成像技术
背景情况:
- 光标签对于跟踪生命科学中的生物分子动态至关重要.
- (III) 复合体具有作为敏感探针的潜力.
- 纤维细胞生长因子21 (FGF21) 是一种关键的代谢调节剂和治疗点.
研究的目的:
- 合成和表征一种新的 (III) 复合物,IrCN,用于FGF21蛋白的特定标记.
- 评估IrCN作为一种用于蛋白质检测,成像和活性评估的光探针.
- 建立IrCN作为生物分子研究的工具,特别是在活细胞成像和蛋白质跟踪方面.
主要方法:
- 合成一种非排放性循环金属化Ir(III) 溶剂复合物 (IrCN).
- 有约束力的研究,以确定最佳的IrCN:FGF21比率和反应动力学.
- 生物相容性和细胞毒性评估.
- 细胞成像实验,以评估细胞质标记和蛋白质追踪.
- 通过分析FGF21介导路径标记物的功能验证.
主要成果:
- 在10分钟内,IrCN可选择性地与FGF21蛋白结合,结合率为1:100 (W/W).
- 在高达50μg/ml的度下,IrCN具有较低的细胞毒性,但在较高剂量时显示器官特异性毒性.
- 未结合的IrCN有效标记细胞质,而结合的IrCN可以在细胞中追踪蛋白质.
- 通过IrCN标签,可以保持FGF21蛋白的原生生物活性.
结论:
- 伊尔CN是一种高度敏感和稳定的光探针,用于标记FGF21蛋白质.
- 该探测器在细胞成像和蛋白质跟踪方面提供了多功能应用.
- 伊尔CN为先进的生物分子研究提供了基础,包括活细胞成像研究.
相关概念视频
01:19Protein Dynamics in Living Cells
2.0K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
2.0K
03:31Labeling DNA Probes
8.1K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
8.1K