Assessment of Mitochondrial Metabolic Oxidative State in Living Cardiomyocytes with Cardiomyocyte Autofluorescence_West China Medical Journal

Authors：

1.the Department of Cardiovascular Surgery, Beijing University Shenzhen Hospital, Shenzhen Guangdong 518036, China; 2.the Department of Pediatrics, Research Centre of CHU SainteJustine, University of Montreal, Montreal, QC. Canada, H3T 1C5; 3.the Department of Biophotonics, International Laser Centre, Bratislava, Slovakia 81219;

Corresponding?author：

Keywords：

煙酰胺腺嘌呤(磷酸)二核苷酸; 自發熒光; 光譜分辨的熒光壽命; 線粒體; 存活心肌細胞

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目的:應用心肌自發熒光(AF)研究心肌線粒體氧化代謝狀態,監測線粒體功能改變的早期信號。方法:煙酰胺腺嘌呤(磷酸)二核苷酸［NAD(P)H］作為熒光探針,用光譜分辨的時間相關單光子計數(TCSPC)記錄375nm紫外激光激發的心肌AF光譜和熒光壽命,測試影響線粒體呼吸時AF動態衰減。結果:在420~560nm光譜區域,至少需用3個熒光壽命池0.4~0.7ns,1.2~1.9ns和8.0~13.0ns描述細胞AF。線粒體呼吸阻斷劑魚藤酮可顯著增加AF強度,縮短平均熒光壽命。氧化磷酸化解偶聯劑二硝基酚可顯著降低AF強度,在520nm處增寬熒光光譜,延長平均熒光壽命。這些結果和NADH熒光動力學離體實驗(in vitro)有可比性。結論:光譜分辨的熒光壽命技術測定心肌NAD(P)H熒光有很好的重復性,在細胞水平上增加了心肌氧化代謝或線粒體功能障礙的知識,為臨床診斷和治療線粒體功能障礙開拓了新視野。

Citation： CHENG Ying,REN Mingming,LIU Yunqi,et al.. Assessment of Mitochondrial Metabolic Oxidative State in Living Cardiomyocytes with Cardiomyocyte Autofluorescence. West China Medical Journal, 2009, 24(7): 1767-1771. doi: Copy

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13.	CHORVAT D JR, BASSIENCAPSA V, CAGALINEC M, et al. Mitochondrial autofluorescence induced by visible light in single cardiac myocytes studied by spectrally resolved confocal microscopy[J]. Laser Physics,2004,14(2):220-230..
14.	CHORVAT D JR, KIRCHNEROVA J, CAGALINEC M, et al. Spectral unmixing of flavin autofluorescence components in cardiac myocytes[J]. Biophys J,2005,89(6):L55-L57..
15.	CHORVAT D, ELZWIEI F, BASSIENCAPSA V, et al. Assessment of lowIntensity fluorescence signals in living cardiac cells using timeresolved laser spectroscopy[J]. Comput Cardiol,2007,34:353-357..
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17.	CHENG Y, DAHDAH N, PORIER N, et al. Spectrally and timeresolved study of NADH autofluorescence in cardiac myocytes from human biopsies[M]. Proceedings of SPIE: the International Society for Optical Engineering,2007:6771(Advanced Photon Counting Techniques II): 677104-1-67710413..

1.
2. CHANCE B, SCHOENER B, OSHINO R, et al. Oxidationreduction ratio studies of mitochondria in freezetrapped samples. NADH and flavoprotein fluorescence signals[J]. J Biol Chem,1979,254(11):4764-4771..
3. BLINOVA K, CARROLL S, BOSE S, et al. Distribution of mitochondrial NADH fluorescence lifetimes: steadystate kinetics of matrix NADH interactions[J]. Biochemistry,2005,44(7):2585-2594..
4. ENG J, LYNCH R M, BALABAN R S. Nicotinamide adenine dinucleotide fluorescence spectroscopy and imaging of isolated cardiac myocytes[J]. Biophys J,1989,55(4):621-630..
5. CHANCE B, THORELL B. Fluorescence measurements of mitochondrial pyridine nucleotide in aerobiosis and anaerobiosis[J]. Nature,1959,184:931-934..
6. BASSIENCAPSA V, FOURON J C, COMTE B, et al. Structural, functional and metabolic remodeling of rat left ventricular myocytes in normal and in sodiumsupplemented pregnancy[J]. Cardiovasc Res,2006,69(2):423-431..
7. CHORVAT D JR, CHORVATOVA A. Spectrally resolved timecorrelated single photon counting: a novel approach for characterization of endogenous fluorescence in isolated cardiac myocytes[J]. Eur Biophys J,2006,36:73-83..
8. ANEBA S, CHENG Y, MATEASIK A, et al. Probing of cardiomyocyte metabolism by spectrally resolved lifetime detection of NAD(P)H fluorescence[J]. Comput Cardiol,2007,34:349-352..
9. VISHWASRAO H D, HEIKAL A A, KASISCHKE K A, et al. Conformational dependence of intracellular NADH on metabolic state revealed by associated fluorescence anisotropy[J]. J Biol Chem,2005,280(26):25119-25126..
10. WAKITA M, NISHIMURA G, TAMURA M. Some characteristics of the fluorescence lifetime of reduced pyridine nucleotides in isolated mitochondria, isolated hepatocytes, and perfused rat liver in situ[J]. J Biochem (Tokyo),1995,118(6):1151-1160..
11. BRAUTIGAM C A, CHUANG J L, TOMCHICK D R, et al. Crystal structure of human dihydrolipoamide dehydrogenase: NAD+/NADH binding and the structural basis of diseasecausing mutations[J]. J Mol Biol,2005,350(3):543-552..
12. ROMASHKO D N, MARBAN E, O’ROURKE B. Subcellular metabolic transients and mitochondrial redox waves in heart cells[J]. Proc Natl Acad Sci USA,1998,95(4):1618-1623..
13. CHORVAT D JR, BASSIENCAPSA V, CAGALINEC M, et al. Mitochondrial autofluorescence induced by visible light in single cardiac myocytes studied by spectrally resolved confocal microscopy[J]. Laser Physics,2004,14(2):220-230..
14. CHORVAT D JR, KIRCHNEROVA J, CAGALINEC M, et al. Spectral unmixing of flavin autofluorescence components in cardiac myocytes[J]. Biophys J,2005,89(6):L55-L57..
15. CHORVAT D, ELZWIEI F, BASSIENCAPSA V, et al. Assessment of lowIntensity fluorescence signals in living cardiac cells using timeresolved laser spectroscopy[J]. Comput Cardiol,2007,34:353-357..
16. SEKAR R B, PERIASAMY A. Fluorescence resonance energy transfer (FRET) microscopy imaging of live cell protein localizations[J]. J Cell Biol,2003,160(5):629-633..
17. CHENG Y, DAHDAH N, PORIER N, et al. Spectrally and timeresolved study of NADH autofluorescence in cardiac myocytes from human biopsies[M]. Proceedings of SPIE: the International Society for Optical Engineering,2007:6771(Advanced Photon Counting Techniques II): 677104-1-67710413..

West China Medical Journal

Assessment of Mitochondrial Metabolic Oxidative State in Living Cardiomyocytes with Cardiomyocyte Autofluorescence

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