Bright and sensitive ratiometric fluorescent probe enabling endogenous FA imaging and mechanistic exploration of indirect oxidative damage due to FA in various living systems

	Bright and sensitive ratiometric fluorescent probe enabling endogenous FA imaging and mechanistic exploration of indirect oxidative damage due to FA in various living systems
	Chen, Tao 1; Dou, Kun 2; Chen, Guang 1,2,3; Yu, Fabiao 3; Liu, Yuxia 2; Chen, Lingxin 3; Cao, Ziping 2; Li, Yulin1 ; You, Jinmao2,3
刊名	CHEMICAL SCIENCE
	2017-11-01
卷号	8 期号:11 页码:7851-7861
英文摘要	As a notorious toxin, formaldehyde (FA) poses an immense threat to human health. Aberrantly elevated FA levels lead to serious pathologies, including organ damage, neurodegeneration, and cancer. Unfortunately, current techniques limit FA imaging to general comparative studies, instead of a mechanistic exploration of its biological role, and this is presumably due to the lack of robust molecular tools for reporting FA in living systems. More importantly, despite being reductive, FA, however, can induce oxidative damage to organisms, thus providing a challenge to the mechanistic study of FA using fluorescence imaging. Herein, we presented the design and multi-application of a bright sensitive ratiometric fluorescent probe 1-(4-(1H-phenanthro[9,10-d] imidazol-2-yl) phenyl) but-3-en-1-amine (PIPBA). With a p-extended phenylphenanthroimidazole fluorophore and an allylamine group, PIPBA exhibited high quantum yield (phi = 0.62) in blue fluorescent emission and selective reactivity toward FA. When sensing FA, PIPBA transformed to PIBE, which is a product capable of releasing bright green fluorescence (phi = 0.51) with its enhanced intramolecular charge transfer (ICT). Transformation of PIPBA to PIBE contributed to 80 nm of red shift in emission wavelength and a highly sensitive ratiometric response (92.2-fold), as well as a quite low detection limit (0.84 mu M). PIPBA was successfully applied to various living systems, realizing, for the first time, ratiometric quantification (in cells), in vivo imaging (zebrafish), and living tissue imaging (vivisectional mouse under anaesthetic) of endogenous FA that was spontaneously generated by biological systems. Furthermore, with the aid of PIPBA, we obtained visual evidence for the oxidative damage of FA in both HeLa cells and renal tissue of a living mouse. The results demonstrated that FA exerted indirect oxidative damage by interacting with free radicals, thus producing more oxidizing species, which eventually caused aggravated oxidative damage to the organism. The indirect oxidative damage due to FA could be alleviated by an exogenous or endogenous antioxidant. The excellent behaviors of PIPBA demonstrate that a chemical probe can detect endogenous FA in cells/tissue/vivo, promising to be an effective tool for further exploration of the biological mechanism of FA in living systems.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	AZA-COPE REACTION ; SELECTIVE DETECTION ; MASS-SPECTROMETRY ; FREE-RADICALS ; FATTY-ACIDS ; VITAMIN-E ; FORMALDEHYDE ; CELLS ; DNA ; STRESS
收录类别	SCI
语种	英语
WOS记录号	WOS:000413532800066
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/9829]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Qinghai Key Lab Qinghai Tibet Plateau Biol Resour, Xining 810001, Qinghai, Peoples R China 2.Qufu Normal Univ, Coll Chem & Chem Engn, Key Lab Life Organ Anal, Key Lab Pharmaceut Intermediates & Anal Nat Med, Qufu 273165, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Chen, Tao,Dou, Kun,Chen, Guang,et al. Bright and sensitive ratiometric fluorescent probe enabling endogenous FA imaging and mechanistic exploration of indirect oxidative damage due to FA in various living systems[J]. CHEMICAL SCIENCE,2017,8(11):7851-7861.
APA	Chen, Tao.,Dou, Kun.,Chen, Guang.,Yu, Fabiao.,Liu, Yuxia.,...&You, Jinmao.(2017).Bright and sensitive ratiometric fluorescent probe enabling endogenous FA imaging and mechanistic exploration of indirect oxidative damage due to FA in various living systems.CHEMICAL SCIENCE,8(11),7851-7861.
MLA	Chen, Tao,et al."Bright and sensitive ratiometric fluorescent probe enabling endogenous FA imaging and mechanistic exploration of indirect oxidative damage due to FA in various living systems".CHEMICAL SCIENCE 8.11(2017):7851-7861.