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Ren CB, Wang JJ, Qin CX, Wang K, Gao Q, Cheng S, Dai LX, Chen GQ. Research Progress in Hemicyanine-Based Polymers. Des Monomers Polym 2011. [DOI: 10.1163/156855511x598632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Chong-Bin Ren
- a College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Jian-Jun Wang
- b College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Chuan-Xiang Qin
- c College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Kai Wang
- d Department of Polymer and Fiber Engineering, Auburn University, Auburn, AL 36830, USA
| | - Qiang Gao
- e Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan
| | - Si Cheng
- f College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Li-Xing Dai
- g College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Guo-Qiang Chen
- h Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, Ueda 386-8567, Japan, College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215021, P. R. China;,
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Tomlinson A, Frezza B, Kofke M, Wang M, Armitage BA, Yaron D. A structural model for cyanine dyes templated into the minor groove of DNA. Chem Phys 2006. [DOI: 10.1016/j.chemphys.2005.10.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nemet BA, Nikolenko V, Yuste R. Second harmonic imaging of membrane potential of neurons with retinal. JOURNAL OF BIOMEDICAL OPTICS 2004; 9:873-81. [PMID: 15447008 DOI: 10.1117/1.1783353] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
We present a method to optically measure and image the membrane potential of neurons, using the nonlinear optical phenomenon of second harmonic generation (SHG) with a photopigment retinal as the chromophore [second harmonic retinal imaging of membrane potential (SHRIMP)]. We show that all-trans retinal, when adsorbed to the plasma membrane of living cells, can report on the local electric field via its change in SHG. Using a scanning mode-locked Ti-sapphire laser, we collect simultaneous two-photon excited fluorescence (TPEF) and SHG images of retinal-stained kidney cells and cultured pyramidal neurons. Patch clamp experiments on neurons stained with retinal show an increase of 25% in SHG intensity per 100-mV depolarization. Our data are the first demonstration of optical measurements of membrane potential of mammalian neurons with SHG. SHRIMP could have wide applicability in neuroscience and, by modifying rhodopsin, could in principle be subject for developing genetically engineered voltage sensors.
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Affiliation(s)
- Boaz A Nemet
- Columbia University, Department of Biological Sciences, 1212 Amsterdam Avenue, New York, New York 10027, USA.
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