1
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Hong ST, Kim MS, Kim BR, Lee EJ, Yoon YU, Paik KC, Han MS, Kim ES, Cho BR. Organelle-specific blue-emitting two-photon probes for calcium ions: Combination with green-emitting two-photon probe for simultaneous detection of proton ions. Talanta 2022; 244:123408. [DOI: 10.1016/j.talanta.2022.123408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 10/18/2022]
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2
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Pyun SY, Paik KC, Han MS, Cho BR. Reactions of
4‐Nitrophenyl
5‐substituted Furan‐2‐carboxylates with
R
2
NH
/
R
2
NH
2
+
in 20 mol%
DMSO
(aq): Effect of Aryl Group on the
Acyl‐Transfer
Reaction. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sang Yong Pyun
- Department of Chemistry Pukyong National University Busan 608‐737 South Korea
| | - Kyu Cheol Paik
- Dvision of Life Science and Chemistry Daejin University Pochun‐si 11159 South Korea
| | - Man So Han
- Dvision of Life Science and Chemistry Daejin University Pochun‐si 11159 South Korea
| | - Bong Rae Cho
- Department of Chemistry Korea University Seoul 136‐713 South Korea
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3
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Choi JW, Ju YH, Choi Y, Hyeon SJ, Gadhe CG, Park JH, Kim MS, Baek S, Kim Y, Park KD, Pae AN, Ryu H, Lee CJ, Cho BR. PyrPeg, a Blood-Brain-Barrier-Penetrating Two-Photon Imaging Probe, Selectively Detects Neuritic Plaques, Not Tau Aggregates. ACS Chem Neurosci 2020; 11:1801-1810. [PMID: 32421307 DOI: 10.1021/acschemneuro.0c00211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Amyloid-β (Aβ) tracers have made a significant contribution to the treatment of Alzheimer's disease (AD) by allowing a definitive diagnosis in living patients. Unfortunately, they also detect tau and other protein aggregates that compromise test accuracy. In AD research, there has been a growing need for in vivo Aβ imaging by two-photon microscopy, which enables deep-brain-fluorescence imaging. There is no suitable neuritic Aβ probe for two-photon microscopy. Here we report PyrPeg, a novel two-photon fluorescent probe that can selectively target insoluble Aβ rather than tau and α-synuclein aggregates in the AD model brain and postmortem brain. When injected intravenously, PyrPeg detects the neuritic plaques in the brain and olfactory bulb of the AD model. PyrPeg may serve as a useful blood-brain-barrier-penetrating diagnostic tool for optical and functional monitoring of insoluble forms of Aβ aggregates in the living AD brain.
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Affiliation(s)
- Ji-Woo Choi
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Yeon Ha Ju
- Center for Cognition and Sociality, Institute for Basic Science (IBS), 55 Expo-ro, Yuseong-gu, Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Yunsook Choi
- Center for Functional Connectomics, Korea Institute of Science and Technology (KIST), 5 Hwarangro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, Connecticut 06511, United States
| | - Seung Jae Hyeon
- Centers for Neuromedicine and Neuroscience, Brain Science Institute, KIST, 5 Hwarangro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Changdev G. Gadhe
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, KIST, 5 Hwarangro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Jong-Hyun Park
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, KIST, 5 Hwarangro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Mun Seok Kim
- Department of Chemistry, Daejin University, 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
| | - Seungyeop Baek
- Integrated Science and Engineering Division, Department of Pharmacy and Department of Biotechnology, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - YoungSoo Kim
- Integrated Science and Engineering Division, Department of Pharmacy and Department of Biotechnology, and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Republic of Korea
| | - Ki Duk Park
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, KIST, 5 Hwarangro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ae Nim Pae
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, KIST, 5 Hwarangro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hoon Ryu
- Centers for Neuromedicine and Neuroscience, Brain Science Institute, KIST, 5 Hwarangro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
- Boston University Alzheimer’s Disease Center (BU ADC) and Department of Neurology, Boston University School of Medicine, Boston, Massachusetts 02118, United States
| | - C. Justin Lee
- Center for Cognition and Sociality, Institute for Basic Science (IBS), 55 Expo-ro, Yuseong-gu, Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Bong Rae Cho
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
- Department of Chemistry, Daejin University, 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
- Department of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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4
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Choi JW, Choi SH, Hong ST, Kim MS, Ryu SS, Yoon YU, Paik KC, Han MS, Sim T, Cho BR. Two-photon probes for the endoplasmic reticulum: its detection in a live tissue by two-photon microscopy. Chem Commun (Camb) 2020; 56:3657-3660. [DOI: 10.1039/d0cc00236d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BER-blue and FER-green can detect the endoplasmic reticulum in a live tissue by two-photon microscopy.
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5
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Hong ST, Koh B, Choi SJ, Yoon E, Pyo MC, Choi JW, Kim MS, Lee EJ, Paik KC, Han MS, Chun HJ, Heo JN, Kim ES, Cho BR. Two-Photon Probe for TNF-α. Assessment of the Transmembrane TNF-α Level in Human Colon Tissue by Two-Photon Microscopy. Anal Chem 2019; 91:15769-15776. [PMID: 31663332 DOI: 10.1021/acs.analchem.9b04036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We developed Pyr1-infliximab: a two-photon probe for TNF-α. Pyr1-infliximab showed absorption maxima at 280 and 438 nm and an emission maximum at 610 nm in an aqueous buffer and effective two-photon action cross-section values of (520-2830) × 10-50 cm4s/photon in RAW 264.7 cells. After this probe was labeled, it was possible to detect Pyr1-infliximab-transmembrane TNF-α complexes in a live cell and to determine the relative proportion of these complexes in human colon tissues. This proportion among healthy, possibly inflamed, and inflamed tissues of patients with ulcerative colitis was found to be 1.0/4.5/10. This probe may find useful applications for selective detection of transmembrane TNF-α in a live cell or tissue, for quantification of inflammation in human colon tissue or of antidrug antibodies in patients who stop responding to anti-TNF therapy, and for monitoring of the response to this therapy.
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Affiliation(s)
- Seung Taek Hong
- KU-KIST Graduate School of Converging Science and Technology , Korea University , 145 Anam-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea
| | - Byumseok Koh
- Therapeutics and Biotechnology Division , Korea Research Institute of Chemical Technology , 141 Gajeong-ro , Daejeon 34114 , Republic of Korea
| | - Seong Ji Choi
- Department of Internal Medicine , Korea University College of Medicine , 73 Inchon-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea
| | - Eunyoung Yoon
- Therapeutics and Biotechnology Division , Korea Research Institute of Chemical Technology , 141 Gajeong-ro , Daejeon 34114 , Republic of Korea
| | - Min Cheol Pyo
- Department of Biotechnology , Korea University , 145 Anam-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea
| | - Ji-Woo Choi
- KU-KIST Graduate School of Converging Science and Technology , Korea University , 145 Anam-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea
| | - Mun Seok Kim
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea
| | - Eun Jeong Lee
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea
| | - Kyu Cheol Paik
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea
| | - Man So Han
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea
| | - Hoon Jai Chun
- Department of Internal Medicine , Korea University College of Medicine , 73 Inchon-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea
| | - Jung-Nyoung Heo
- Therapeutics and Biotechnology Division , Korea Research Institute of Chemical Technology , 141 Gajeong-ro , Daejeon 34114 , Republic of Korea.,Graduate School of New Drug Discovery and Development , Chungnam National University , 99 Daehak-ro , Daejeon 34134 , Republic of Korea
| | - Eun Sun Kim
- Department of Internal Medicine , Korea University College of Medicine , 73 Inchon-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea
| | - Bong Rae Cho
- KU-KIST Graduate School of Converging Science and Technology , Korea University , 145 Anam-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea.,Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea.,Department of Chemistry , Korea University , 145 Anam-ro, Seongbuk-gu , Seoul 02841 , Republic of Korea
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6
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Sung J, Ahn KT, Cho BR, Lee SY, Kim BJ, Kim DK, Park JI, Lee WS. 1423Adherence to triple component antihypertensive regimen is higher in single-pill combination than two-pill regimen: data from a randomized controlled trial using medication event monitoring system. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Simplicity of regimen is known to be an important determinant of medication adherence and using single-pill combination (SPC) in hypertension treatment resulted in better adherence and persistence than free-equivalent combination. However, this finding has been studied only in dual-component antihypertensive treatments and in observational studies using medication possession ratio as an index of adherence. Medication event monitoring system (MEMS) is considered to be the gold standard in estimating medication adherence.
Purpose
To investigate the superiority in adherence of triple-component SPC compared to equivalent two-pill regimen using MEMS
Methods
This is a multi-center open-label randomized controlled trial. Inclusion criteria were hypertensive patients whose clinic blood pressure is not adequately controlled (systolic >140 mmHg or diastolic >90 mmHg) with combination antihypertensive regimen comprising two of three classes (angiotensin receptor blocker, calcium channel blocker and thiazide diuretics) for at least 4 weeks. Eligible patients were randomized either to single-pill (triple-component SPC, olmesartan/amlodipine/ hydrochlorothiazide 20/5/12.5 mg) or two-pill (dual-component SPC + one free pill, olmesartan/hydrochlorothiazide 20/12.5 mg + amlodipine 5 mg) groups and maintained for 12 weeks. Medications were dispensed in MEMS. Primary outcomes were the difference of percentage of dose taken (PDT) and percentage of days with prescribed dose taken correctly (PDTc) between single- and two-pill therapy, calculated from MEMS data.
Results
From 8 hospitals, 146 hypertensive patients were randomized into single- and two-pill groups. Final analysis was done in 65 and 66 patients in each group from which adherence index could be obtained. Baseline clinical characteristics of the two groups were not different. The single-pill group had significantly higher PDT and PDTc compared to the two-pill group. (median (25–75 percentile) (%), PDT 95.1 (87.9 - 100.0) vs 91.2 (79.8 - 96.5); PDTc 93.1 (79.8 - 96.5) vs 91.3 (70.7 - 96.4), p = both 0.04, by Wilcoxon rank sum test)
Percent dose taken
Conclusion
Single-pill combination of triple-component antihypertensive regimen showed superior adherence compared to equivalent two-pill therapy. Reducing pill burden by using SPC is a relevant strategy to enhance the adherence to multi-drug antihypertensive therapy.
Acknowledgement/Funding
Daiichi-Sankyo
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Affiliation(s)
- J Sung
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea (Republic of)
| | - K T Ahn
- Chungnam National University Hospital, Daejeon, Korea (Republic of)
| | - B R Cho
- Kangwon National University Hospital, Chooncheon, Korea (Republic of)
| | - S Y Lee
- Ilsan Paik Hospital, Goyang, Korea (Republic of)
| | - B J Kim
- Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea (Republic of)
| | - D K Kim
- Busan Paik Hospital, Busan, Korea (Republic of)
| | - J I Park
- VHS Medical Center, Seoul, Korea (Republic of)
| | - W S Lee
- Chung-Ang University Hospital, Seoul, Korea (Republic of)
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7
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Pyun SY, Paik KC, Han MS, Cho BR. Reactions of 2,4‐Dinitrophenyl 5‐substituted‐2‐thiophenecarboxylates with R
2
NH/R
2
NH
2
+
in 20 Mol % DMSO(aq). Effects of 5‐Thienyl Substituent and Leaving Group on the Reaction Mechanism. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sang Yong Pyun
- Department of ChemistryPukyong National University Pusan 608‐737 South Korea
| | - Kyu Cheol Paik
- Department of ChemistryDaejin University Gyeonggi‐do 11159 South Korea
| | - Man So Han
- Department of ChemistryDaejin University Gyeonggi‐do 11159 South Korea
| | - Bong Rae Cho
- Department of ChemistryKorea University Seoul 136‐713 South Korea
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8
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Choi JW, Hong ST, Kim MS, Paik KC, Han MS, Cho BR. Two-Photon Probes for Golgi Apparatus: Detection of Golgi Apparatus in Live Tissue by Two-Photon Microscopy. Anal Chem 2019; 91:6669-6674. [PMID: 30919620 DOI: 10.1021/acs.analchem.9b00607] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We have developed blue- and yellow-emitting two-photon probes (BGolgi-blue and PGolgi-yellow) from 6-(benzo[ d]oxazol-2-yl)-2-naphthalylamine and 2,5-bis(benzo[ d]oxazol-2-yl)pyrazine derivatives as the fluorophores and trans-Golgi-network peptide (SDYQRL) as the Golgi-apparatus-targeting moiety. HeLa cells labeled with BGolgi-blue and PGolgi-yellow emitted two-photon-excited fluorescence at 462 and 560 nm, respectively, with effective two-photon-action cross-section values of 1860 and 1600 × 10-50 cm4·s/photon, respectively. The probes can detect the Golgi apparatus in live cells and deep inside live tissue via two-photon microscopy at widely separated wavelength regions with high selectivity and minimal pH interference, and they are photostable and have low cytotoxicity.
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Affiliation(s)
- Ji-Woo Choi
- KU-KIST Graduate School of Converging Science and Technology , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea
| | - Seung Taek Hong
- KU-KIST Graduate School of Converging Science and Technology , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea
| | - Mun Seok Kim
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea
| | - Kyu Cheol Paik
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea
| | - Man So Han
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea
| | - Bong Rae Cho
- Department of Chemistry , Daejin University , 1007 Hoguk-ro , Pocheon-si , Gyeonggi-do 11159 , Republic of Korea.,Department of Chemistry , Korea University , 145 Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea
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9
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Cho KI, Cho BR, Jeon DW, Rha SW, Lee JY, Lim HS, Jin DK, Ahn HS, Park SW. P3801Effect of nebivolol on gender-different efficacy and safety in Korean patients with hypertension: result from BENEFIT-KOREA study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K I Cho
- Kosin University School of Medicine, Department of Internal Medicine, Division of Cardiology, Busan, Korea Republic of
| | - B R Cho
- Kangwon National University Hospital, Chuncheon, Korea Republic of
| | - D W Jeon
- Ilsan Hospital, Goyang, Korea Republic of
| | - S W Rha
- Korea University Guro Hospital, Seoul, Korea Republic of
| | - J Y Lee
- Kangbuk Samsung Hospital, Seoul, Korea Republic of
| | - H S Lim
- Ajou University Hospital, Suwon, Korea Republic of
| | - D K Jin
- SoonChunHyang University Hospital, Chonan, Korea Republic of
| | - H S Ahn
- Sahmyook Medical Center, seoul, Korea Republic of
| | - S W Park
- A. Menarini Korea Ltd, seoul, Korea Republic of
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10
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Kim W, Kim ES, Min G, Kim SH, Choi SJ, Lee JM, Lee JM, Choi HS, Keum B, Jeen YT, Lee HS, Chun HJ, Kim CD, Hong ST, Heo JN, Cho BR. Two-photon probes for pH: Detection of human colon cancer using two-photon microscopy. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.4_suppl.607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
607 Background: In cancer cells, lysosomal pH decreases along with a concomitant increase in lysosomal volume and cathepsin expression levels. Lysosomes also play crucial roles in cancer progression following their release into the extracellular space. Since cancer cells invade a tissue by secreting degradative enzymes, the extracellular pH of tumor tissues becomes acidic. However, to date, there has been no report on the use of multi-photon microscopy (MPM) probes to image human colon cancer tissues. Methods: We have developed multi-photon (MP) pH-sensitive probes (BH-2 and BHEt-1) that exhibit absorption and emission maxima at 370 and 466 nm, and TP absorption cross-section values of 51 and 61 GM (1 GM = 10−50 cm4 s/photon), respectively, at 750 nm and pH 3.0 in a universal buffer (0.1 M citric acid, 0.1 M KH2PO4, 0.1 M Na2B4O7, 0.1 M Tris, 0.1 M KCl)/1,4-dioxane (7/ 3) solution. Results: The TPM images of CCD-18co (a normal colon cell line) and HCT116 cells (a colon cancer cell line) labeled with BH-2 were too dim to be distinguished. When the same cells were labeled with BHEt-1, however, the MPM image of the HCT116 cells was much brighter than that of CCD-18co cells, and the relative proportion of the acidic vesicles (Pacid) of the former was 5-fold larger than that of latter. BHEt-1 could also differentiate HepG2 cells (a human liver cancer cell line) from LX-2 cells (a human hepatic stellate cell line) with a 6-fold larger P acid value. Human colon cancer tissues labeled with BHEt-1 showed similar results, demonstrating much brighter MPM images and 6-fold larger Pacid values compared to normal tissue. Conclusions: These results suggest the potential utility of BHEt-1 for molecular image analysis of colon cancer tissues using MPM.
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Affiliation(s)
- Woojung Kim
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Eun Sun Kim
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Geeho Min
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Seung Han Kim
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Seong ji Choi
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Jung Min Lee
- Korea University Anam Hospital, Seoul, Korea, Republic of (South)
| | - Jae Min Lee
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Hyuk Soon Choi
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Bora Keum
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Yoon Tae Jeen
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Hong Sik Lee
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Hoon Jai Chun
- Korea University Anam Hospital, Seoul, Korea, Republic of (South)
| | - Chang Duck Kim
- Korea University College of Medicine, Seoul, Korea, Republic of (South)
| | - Seung Taek Hong
- KU-KIST Graduate School of Converging Science and Technology, Seoul, Korea, Republic of (South)
| | - Jung-Nyoung Heo
- Korea Research Institute of Chemical Technology, Graduate School of New Drug Discovery and Development, Daejeon, Korea, Republic of (South)
| | - Bong Rae Cho
- Daejin University, Gyeonggi-Do, Korea, Republic of (South)
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11
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Pyun SY, Paik KC, Han MS, Kim BT, Cho BR. Elimination Reactions of Aryl Furylacetates Promoted by R 2
NH in MeCN: Effects of Base Solvent and β-Aryl Group on the Ketene-forming Transition State. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sang Yong Pyun
- Department of Chemistry; Pukyong National University; Pusan 608-737 Korea
| | - Kyu Cheol Paik
- Department of Chemistry; Daejin University; Gyeonggi-do 11159 Korea
| | - Man So Han
- Department of Chemistry; Daejin University; Gyeonggi-do 11159 Korea
| | - Byung Tae Kim
- Division of Energy and Environmental Engineering; Daejin University; Gyeonggi-do 11159 Korea
| | - Bong Rae Cho
- Department of Chemistry; Korea University; Seoul 136-713 Korea
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12
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Hong ST, Kim TH, Choi JW, Park SJ, Kwon SA, Paik KC, Han MS, Kim ES, Chun HJ, Heo JN, Cho BR. Two-Photon Probes for pH: Detection of Human Colon Cancer using Two-Photon Microscopy. Anal Chem 2017; 89:9830-9835. [DOI: 10.1021/acs.analchem.7b01804] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Seung Taek Hong
- KU-KIST
Graduate School of Converging Science and Technology, Korea University, 145
Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Tae Hyeong Kim
- Medicinal
Chemistry Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Daejeon 34114, Republic of Korea
- Graduate
School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Daejeon 34134, Republic of Korea
| | - Ji-Woo Choi
- KU-KIST
Graduate School of Converging Science and Technology, Korea University, 145
Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Seong Jun Park
- Medicinal
Chemistry Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Daejeon 34114, Republic of Korea
| | - Sung An Kwon
- Department
of Chemistry, Daejin University, 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
| | - Kyu Cheol Paik
- Department
of Chemistry, Daejin University, 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
| | - Man So Han
- Department
of Chemistry, Daejin University, 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
| | - Eun Sun Kim
- Department
of Internal Medicine, Korea University College of Medicine, 73 Inchon-ro, Sungbuk-gu, Seoul 02841, Republic of Korea
| | - Hoon Jai Chun
- Department
of Internal Medicine, Korea University College of Medicine, 73 Inchon-ro, Sungbuk-gu, Seoul 02841, Republic of Korea
| | - Jung-Nyoung Heo
- Medicinal
Chemistry Research Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Daejeon 34114, Republic of Korea
- Graduate
School of New Drug Discovery and Development, Chungnam National University, 99 Daehak-ro, Daejeon 34134, Republic of Korea
| | - Bong Rae Cho
- Department
of Chemistry, Daejin University, 1007 Hoguk-ro, Pocheon-si, Gyeonggi-do 11159, Republic of Korea
- Department
of Chemistry, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 02841, Republic of Korea
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13
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Choi JW, Hong ST, Kang DE, Paik KC, Han MS, Lim CS, Cho BR. Two-Photon Tracer for Human Epidermal Growth Factor Receptor-2: Detection of Breast Cancer in a Live Tissue. Anal Chem 2016; 88:9412-9418. [DOI: 10.1021/acs.analchem.6b00912] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ji-Woo Choi
- KU-KIST
Graduate School of Converging Science and Technology, Korea University, 145
Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Seung Taek Hong
- KU-KIST
Graduate School of Converging Science and Technology, Korea University, 145
Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Dong Eun Kang
- Department
of Chemistry, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul, 02841, Republic of Korea
| | - Kyu Cheol Paik
- Department
of Chemistry, Daejin University, 1007 Hoguk-ro, Pochun-si, Gyeonggi-do 11159, Republic of Korea
| | - Man So Han
- Department
of Chemistry, Daejin University, 1007 Hoguk-ro, Pochun-si, Gyeonggi-do 11159, Republic of Korea
| | - Chang Su Lim
- Department
of Chemistry, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
| | - Bong Rae Cho
- KU-KIST
Graduate School of Converging Science and Technology, Korea University, 145
Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
- Department
of Chemistry, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul, 02841, Republic of Korea
- Department
of Chemistry, Daejin University, 1007 Hoguk-ro, Pochun-si, Gyeonggi-do 11159, Republic of Korea
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Koo JY, Heo CH, Shin YH, Kim D, Lim CS, Cho BR, Kim HM, Park SB. Readily Accessible and Predictable Naphthalene-Based Two-Photon Fluorophore with Full Visible-Color Coverage. Chemistry 2016; 22:14166-70. [DOI: 10.1002/chem.201603496] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Ja Young Koo
- Department of Chemistry; Seoul National University; Seoul 08826 Korea
| | - Cheol Ho Heo
- Department of Chemistry, Division of Energy System Research; Ajou University; Suwon 16499 Korea
| | - Young-Hee Shin
- Department of Chemistry; Seoul National University; Seoul 08826 Korea
| | - Dahahm Kim
- Department of Chemistry; Seoul National University; Seoul 08826 Korea
| | - Chang Su Lim
- Department of Chemistry, Division of Energy System Research; Ajou University; Suwon 16499 Korea
| | - Bong Rae Cho
- Department of Chemistry; Daejin University; Pochun 11159 Korea
| | - Hwan Myung Kim
- Department of Chemistry, Division of Energy System Research; Ajou University; Suwon 16499 Korea
| | - Seung Bum Park
- Department of Chemistry; Seoul National University; Seoul 08826 Korea
- Department of Biophysics and Chemical Biology; Seoul National University; Seoul 08826 Korea
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15
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Pyun SY, Paik KC, Han MS, Cho BR. Elimination Reactions of ( E)-2,4,6-Trinitrobenzaldehyde O-Benzoyloximes Promoted by R 2NH/R 2NH 2+in 70 mol% MeCN (aq). Effects of the β-Aryl Group and Leaving Group on Nitrile-Forming Transition States. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sang Yong Pyun
- Department of Chemistry; Pukyong National University; Pusan 608-737 Korea
| | - Kyu Cheol Paik
- Department of Chemistry; Daejin University; Gyeonggi-do 487-711 Korea
| | - Man So Han
- Department of Chemistry; Daejin University; Gyeonggi-do 487-711 Korea
| | - Bong Rae Cho
- Department of Chemistry; Korea University; Seoul 136-713 Korea
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16
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Su Lim C, Sun Kim E, Yeon Kim J, Taek Hong S, Jai Chun H, Eun Kang D, Rae Cho B. Measurement of the Nucleus Area and Nucleus/Cytoplasm and Mitochondria/Nucleus Ratios in Human Colon Tissues by Dual-Colour Two-Photon Microscopy Imaging. Sci Rep 2015; 5:18521. [PMID: 26673743 PMCID: PMC4682082 DOI: 10.1038/srep18521] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 11/19/2015] [Indexed: 12/31/2022] Open
Abstract
We developed two-photon (TP) probes for DNA (ABI-Nu), cytoplasm (Pyr-CT), and mitochondria (BF-MT). We found that ABI-Nu binds to AT in the minor groove, while ABI-Nu and BF-MT are effective for tracking in the cytoplasm and mitochondria, respectively. These probes showed very large effective two-photon action cross section values of 2230, 1555, and 790 Göppert-Mayer units (1 GM = 10(-50) cm(4) s photon(-1) molecule(-1)) at 740 nm with emission maxima at 473, 561, and 560 nm, respectively, in each organelle. Using these probes, we quantitatively estimated the mean nuclear area and the ratios of nuclei to cytoplasm and mitochondria to nuclei in human colon tissues by dual-colour two-photon microscopy imaging within 2 h after biopsy. The mean nuclear area and the nuclei to cytoplasm and mitochondria to cytoplasm ratios increased in the following order: normal colon mucosa
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Affiliation(s)
- Chang Su Lim
- Department of Chemistry, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
| | - Eun Sun Kim
- Department of Internal Medicine, Korea University College of Medicine, 73 Inchon-ro, Seoul, 136-705, Korea
| | - Ji Yeon Kim
- Department of Chemistry, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
| | - Seung Taek Hong
- KU-KIST Graduate School of Converging Science and Technology, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
| | - Hoon Jai Chun
- Department of Internal Medicine, Korea University College of Medicine, 73 Inchon-ro, Seoul, 136-705, Korea
| | - Dong Eun Kang
- Department of Chemistry, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
| | - Bong Rae Cho
- Department of Chemistry, Korea University, 145 Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
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17
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Pyun SY, Paik KC, Han MS, Cho BR. Reactions of Aryl 5-substituted-2-Thiophenecarboxylates Promoted by 4-Z-C6H4O−/4-Z-C6H4OH in 20 mol % DMSO(aq). Effect of Nucleophile on Acyl-Transfer Reaction. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sang Yong Pyun
- Department of Chemistry; Pukyong National University; Pusan 608-737 Korea
| | - Kyu Cheol Paik
- Department of Chemistry; Daejin University; Pocheon-si 487-711 Korea
| | - Man So Han
- Department of Chemistry; Daejin University; Pocheon-si 487-711 Korea
| | - Bong Rae Cho
- Department of Chemistry; Korea University; Seoul 136-713 Korea
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18
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Lim CS, Hong ST, Ryu SS, Kang DE, Cho BR. Two-Photon Probes for Lysosomes and Mitochondria: Simultaneous Detection of Lysosomes and Mitochondria in Live Tissues by Dual-Color Two-Photon Microscopy Imaging. Chem Asian J 2015; 10:2240-9. [DOI: 10.1002/asia.201500314] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Indexed: 12/28/2022]
Affiliation(s)
- Chang Su Lim
- Department of Chemistry; Korea University; 1-Anamdong Seoul 136-701 Republic of Korea
| | - Seung Taek Hong
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 1-Anamdong Seoul 136-701 Republic of Korea
| | - Seong Shick Ryu
- KU-KIST Graduate School of Converging Science and Technology; Korea University; 1-Anamdong Seoul 136-701 Republic of Korea
| | - Dong Eun Kang
- Department of Chemistry; Korea University; 1-Anamdong Seoul 136-701 Republic of Korea
| | - Bong Rae Cho
- Department of Chemistry; Korea University; 1-Anamdong Seoul 136-701 Republic of Korea
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Affiliation(s)
- Hwan Myung Kim
- Department of Chemistry & Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - Bong Rae Cho
- Department
of Chemistry, Korea University, 145, Anam-ro, Seoul 136-713, Korea
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20
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Han JH, Park SK, Lim CS, Park MK, Kim HJ, Kim HM, Cho BR. Corrigendum: Simultaneous Imaging of Mitochondria and Lysosomes by Using Two-Photon Fluorescent Probes. Chemistry 2015. [DOI: 10.1002/chem.201501462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Jeong MY, Cho BR. Octupolar molecules for nonlinear optics: from molecular design to crystals and films with large second-harmonic generation. CHEM REC 2014; 15:132-42. [PMID: 25315898 DOI: 10.1002/tcr.201402013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Indexed: 11/06/2022]
Abstract
We summarize the nonlinear optical (NLO) properties of octupolar molecules, crystals, and films developed in our laboratory. We present the design strategy, structure-property relationship, and second-order NLO properties of 1,3,5-trinitro- and 1,3,5-tricyano-2,4,6-tris(p-diethylaminostyryl)benzene (TTB) derivatives, TTB crystals, and films prepared by free-casting TTB in poly(methyl methacrylate) (PMMA). The first hyperpolarizability of TTB was fivefold larger than that of the dipolar analogue. Moreover, the TTB crystal showed unprecedentedly large second-harmonic generation (SHG). While TTB crystal films (20 wt% TTB/PMMA) on various substrates showed appreciable SHG values, the cylinder film exhibited much larger SHG values and large electro-optic (EO) coefficients. The large SHG values and EO coefficients, as well as the high thermal stability of the cylinder film, will make it a potential candidate for NLO device applications.
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Affiliation(s)
- Mi-Yun Jeong
- Department of Physics and Research Institute of Natural Science, Gyeongsang National University, Jinju, 660-701, South Korea
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23
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Pyun SY, Kim JC, Cho BR. Elimination Reactions of Aryl Furylacetates Promoted by R 2NH-R 2NH 2+in 70 mol% MeCN(aq). Effects of β-Aryl on the Ketene-Forming Transition-State. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.7.2143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Chun HJ, Kim ES, Cho BR. Scope and limitation of label-free multiphoton microscopy and probe-labeled two-photon microscopy for the endomicroscopic diagnosis. Scanning 2014; 36:462-464. [PMID: 24375013 DOI: 10.1002/sca.21133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 11/19/2013] [Accepted: 12/02/2013] [Indexed: 06/03/2023]
Abstract
We briefly describe the advantages and limitations of label-free multiphoton microscopy and probe-labeled two-photon microscopy for the endomicroscopic diagnosis. The two methods are complementary and more information can be collected from tissues by combining the two methods. Therefore, parallel efforts should be directed to the development of both label-free MPM and probe-labeled TPM as the diagnostic tool.
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Affiliation(s)
- Hoon Jai Chun
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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25
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Kang DE, Lim CS, Kim JY, Kim ES, Chun HJ, Cho BR. Two-Photon Probe for Cu2+ with an Internal Reference: Quantitative Estimation of Cu2+ in Human Tissues by Two-Photon Microscopy. Anal Chem 2014; 86:5353-9. [DOI: 10.1021/ac500329k] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Dong Eun Kang
- Department
of Chemistry, Korea University, 145, Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
| | - Chang Su Lim
- Department
of Chemistry, Korea University, 145, Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
| | - Ji Yeon Kim
- Department
of Chemistry, Korea University, 145, Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
| | - Eun Sun Kim
- Department
of Internal Medicine, Korea University College of Medicine, 73, Inchon-ro, Seoul 136-705, Korea
| | - Hoon Jai Chun
- Department
of Internal Medicine, Korea University College of Medicine, 73, Inchon-ro, Seoul 136-705, Korea
| | - Bong Rae Cho
- Department
of Chemistry, Korea University, 145, Anam-ro, Sungbuk-gu, Seoul 136-713, Korea
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26
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Rathore K, Lim CS, Lee Y, Cho BR. Dual-color imaging of cytosolic and mitochondrial zinc ions in live tissues with two-photon fluorescent probes. Org Biomol Chem 2014; 12:3406-12. [PMID: 24740270 DOI: 10.1039/c4ob00101j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report two-photon probes for Zn(2+) ions that can simultaneously detect cytosolic and mitochondrial Zn(2+) ions in live cells and living tissues at 115 mm depth by dual-color TPM imaging with minimum interference from other biologically relevant species.
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Affiliation(s)
- Kailash Rathore
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, Korea.
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Affiliation(s)
- Avik Ranjan Sarkar
- Division
of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - Dong Eun Kang
- Department
of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
| | - Hwan Myung Kim
- Division
of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - Bong Rae Cho
- Department
of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
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Kim SI, Cho BR, Choi CB. Effects of Sesame Meal on Growth Performances and Fatty acid Composition, Free Amino Acid Contents, and Panel Tests of Loin of Hanwoo Steers. Journal of Animal Science and Technology 2013. [DOI: 10.5187/jast.2013.55.5.451] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Two-photon microscopy (TPM), which uses two photons of lower energy as the excitation source, is a vital tool in biology and clinical science, due to its capacity to image deep inside intact tissues for a long period of time. To make TPM a more versatile tool in biomedical research, we have developed a variety of two-photon probes for specific applications. In this mini review, we will briefly discuss two-photon probes for lipid rafts, lysosomes, mitochondria, and pH, and their biomedical applications. [BMB Reports 2013; 46(4): 188-194]
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Affiliation(s)
- Chang Su Lim
- Department of Chemistry, Korea University, Seoul 136-701, Korea
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Lim CS, Das SK, Yang SY, Kim ES, Chun HJ, Cho BR. Quantitative Estimation of the Total Sulfide Concentration in Live Tissues by Two-Photon Microscopy. Anal Chem 2013; 85:9288-95. [DOI: 10.1021/ac402042k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chang Su Lim
- Department
of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
| | - Sajal Kumar Das
- Department
of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
| | - Sun Young Yang
- Department
of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
| | - Eun Sun Kim
- Department
of Internal Medicine, Korea University College of Medicine, 1-Anamdong, Seoul 136-705, Korea
| | - Hoon Jai Chun
- Department
of Internal Medicine, Korea University College of Medicine, 1-Anamdong, Seoul 136-705, Korea
| | - Bong Rae Cho
- Department
of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
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Pyun SY, Cho BR. Reactions of 4-Nitrophenyl 2-Thiophenecarboxylates with R 2NH/R 2NH 2+in 20 mol % DMSO (aq). Effects of 5-Thienyl Substituent and Base Strength. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.7.2036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Bae SK, Heo CH, Choi DJ, Sen D, Joe EH, Cho BR, Kim HM. A Ratiometric Two-Photon Fluorescent Probe Reveals Reduction in Mitochondrial H2S Production in Parkinson’s Disease Gene Knockout Astrocytes. J Am Chem Soc 2013; 135:9915-23. [DOI: 10.1021/ja404004v] [Citation(s) in RCA: 340] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Sung Keun Bae
- Division of Energy Systems Research,
Ajou University, Suwon 443-749, Korea
| | - Cheol Ho Heo
- Division of Energy Systems Research,
Ajou University, Suwon 443-749, Korea
| | - Dong Joo Choi
- Department of Pharmacology/Neuroscience
Graduate Program, Ajou University School of Medicine, Suwon 443-721,
Korea
| | - Debabrata Sen
- Division of Energy Systems Research,
Ajou University, Suwon 443-749, Korea
| | - Eun-Hye Joe
- Department of Pharmacology/Neuroscience
Graduate Program, Ajou University School of Medicine, Suwon 443-721,
Korea
| | - Bong Rae Cho
- Department of Chemistry,
Korea
University, Seoul 136-701, Korea
| | - Hwan Myung Kim
- Division of Energy Systems Research,
Ajou University, Suwon 443-749, Korea
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Cho BR, Pyun SY. Eliminations from (E)-2,4-Dinitrobenzaldehyde O-Aryloximes Promoted by R 3N/R 3NH +in 70 mol% MeCN(aq). Effects of Leaving Group and Base-Solvent on the Nitrile-Forming Transition-State. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.4.1030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Han JH, Park SK, Lim CS, Park MK, Kim HJ, Kim HM, Cho BR. Simultaneous imaging of mitochondria and lysosomes by using two-photon fluorescent probes. Chemistry 2012; 18:15246-9. [PMID: 23112112 DOI: 10.1002/chem.201203452] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Indexed: 01/01/2023]
Affiliation(s)
- Ji Hee Han
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, 136-701, Korea
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Dong X, Han JH, Heo CH, Kim HM, Liu Z, Cho BR. Dual-color imaging of magnesium/calcium ion activities with two-photon fluorescent probes. Anal Chem 2012; 84:8110-3. [PMID: 22967146 DOI: 10.1021/ac302210v] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report two-photon probes (FMg1 and FMg2) that can selectively detect intracellular free Mg(2+) ([Mg(2+)](i)) in live cells and tissues by two-photon microscopy. Combined with BCaM, a two-photon probe for near-membrane Ca(2+) ([Ca(2+)](m)), FMg2 allows dual-color imaging of Mg(2+)/Ca(2+) activities in live cells and [Mg(2+)](i) /[Ca(2+)](m) distributions in live tissues at a depth of 100-200 μm.
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Affiliation(s)
- Xiaohu Dong
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
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Seo EW, Han JH, Heo CH, Shin JH, Kim HM, Cho BR. A Small-Molecule Two-Photon Probe for Nitric Oxide in Living Tissues. Chemistry 2012; 18:12388-94. [DOI: 10.1002/chem.201201197] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 06/21/2012] [Indexed: 01/10/2023]
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Kim ES, Lim CS, Chun HJ, Keum B, Seo YS, Kim YS, Jeen YT, Lee HS, Um SH, Kim CD, Ryu HS, Cho BR. Detection of Cu(I) and Zn(II) ions in colon tissues by multi-photon microscopy: novel marker of antioxidant status of colon neoplasm. J Clin Pathol 2012; 65:882-7. [PMID: 22813731 PMCID: PMC3461637 DOI: 10.1136/jclinpath-2012-200666] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Aims Establishing probe-based analysis is important for developing multi-photon microscopy (MPM) to make an early diagnosis of colon neoplasm and assess its antioxidant status. Cu(I) and Zn(II) ions are trace elements which roll as cofactors of antioxidant, superoxide dismutase. However, there have been no reports on the features of MPM image using probe of Cu(I) and Zn(II) ions. Our main objective in this study was application of newly developed multi-photon probe (MP) probe on Cu(I) and Zn(II) ions as a tool to assess antioxidative status of colon neoplasm. Methods This study was a pilot study. Colon cancer cell lines (ACT116 and HT-29), NIH3T3 cells and tissues of normal colon mucosa and colon neoplasm obtained during colonoscopic biopsy from 17 patients were stained with MP probes for Cu(I) and Zn(II) (ACu1 and AZn1). Cu(I)/Zn(II) levels in the cells and tissues were determined by detecting MP-excited fluorescence by MPM. Results MPM images of cells stained with MP probes revealed that Cu(I) was more abundant in ACT116 and HT-29 cells than in NIH3T3 cells, while Zn(II) was more abundant in NIH3T3 cells than in ACT116 and HT-29 cells. Normal tissues had a defined texture, whereas adenoma/adenocarcinoma tissues were amorphous. The level of Cu(I) increased and that of Zn(II) decreased with the transition from normal to adenoma to adenocarcinoma tissue. Conclusion MPM can be used to determine the relative Cu(I)/Zn(II) levels in cells and colon tissues by using ACu1 and AZn1 as MPM probes. These finding are new research tools for gastroenterologists to assess antioxidant status of colon neoplasm.
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Affiliation(s)
- Eun Sun Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Institute of Nutritional and Digestive Disease, Korea University College of Medicine, Seoul, Korea
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Baek NY, Heo CH, Lim CS, Masanta G, Cho BR, Kim HM. A highly sensitive two-photon fluorescent probe for mitochondrial zinc ions in living tissue. Chem Commun (Camb) 2012; 48:4546-8. [PMID: 22450755 DOI: 10.1039/c2cc31077e] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report a highly sensitive two-photon probe (SZn2-Mito) which shows a 70-fold two-photon excited fluorescence enhancement in response to Zn(2+) and can selectively detect mitochondrial Zn(2+) in a rat hippocampal slice at a depth of 100-200 μm by using two-photon microscopy.
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Affiliation(s)
- Na Young Baek
- Division of Energy Systems Research and Molecular Science & Technology Research Center, Ajou University, Suwon, 443-749, Korea
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Masanta G, Heo CH, Lim CS, Bae SK, Cho BR, Kim HM. A mitochondria-localized two-photon fluorescent probe for ratiometric imaging of hydrogen peroxide in live tissue. Chem Commun (Camb) 2012; 48:3518-20. [PMID: 22382302 DOI: 10.1039/c2cc00034b] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report a two-photon fluorescent probe (SHP-Mito) which can ratiometrically detect mitochondrial H(2)O(2) in live cells and intact tissues at >100 μm depth through the use of two-photon microscopy.
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Affiliation(s)
- Goutam Masanta
- Division of Energy Systems Research and Molecular Science & Technology Research Center, Ajou University, Suwon, 443-749, Korea
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Park HJ, Lim CS, Kim ES, Han JH, Lee TH, Chun HJ, Cho BR. Measurement of pH Values in Human Tissues by Two-Photon Microscopy. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201109052] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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41
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Park HJ, Lim CS, Kim ES, Han JH, Lee TH, Chun HJ, Cho BR. Measurement of pH Values in Human Tissues by Two-Photon Microscopy. Angew Chem Int Ed Engl 2012; 51:2673-6. [DOI: 10.1002/anie.201109052] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 01/16/2012] [Indexed: 01/30/2023]
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42
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Abstract
We report a two-photon turn-on probe (AS1) that can be excited by 780 nm femto-second pulses and visualize glucose uptake and the changes in the intracellular glucose concentration in live cells and tissue by two-photon microscopy.
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Affiliation(s)
- Chang Su Lim
- Department of Chemistry, Korea University, 145-Anam-ro, Sungbuk-ku, Seoul, 136-713, Korea
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Kang MY, Lim CS, Kim HS, Seo EW, Kim HM, Kwon O, Cho BR. Detection of Nickel in Fish Organs with a Two-Photon Fluorescent Probe. Chemistry 2012; 18:1953-60. [DOI: 10.1002/chem.201103191] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Indexed: 01/25/2023]
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44
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Das SK, Lim CS, Yang SY, Han JH, Cho BR. A small molecule two-photon probe for hydrogen sulfide in live tissues. Chem Commun (Camb) 2012; 48:8395-7. [DOI: 10.1039/c2cc33909a] [Citation(s) in RCA: 173] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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45
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Nag OK, Lim CS, Nguyen BL, Kim B, Jang J, Han JH, Cho BR, Woo HY. pH-responsive water soluble smart vesicles containing a bis(styryl)benzene derivative for two-photonmicroscopy imaging. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14693a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Cho HJ, Chun HJ, Kim ES, Cho BR. Multiphoton microscopy: An introduction to gastroenterologists. World J Gastroenterol 2011; 17:4456-60. [PMID: 22110275 PMCID: PMC3218135 DOI: 10.3748/wjg.v17.i40.4456] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 03/02/2011] [Accepted: 03/09/2011] [Indexed: 02/06/2023] Open
Abstract
Multiphoton microscopy, relying on the simultaneous absorption of two or more photons by a fluorophore, has come to occupy a prominent place in modern biomedical research with its ability to allow real-time observation of a single cell and molecules in intact tissues. Multiphoton microscopy exhibits nonlinear optical contrast properties, which can make it possible to provide an exceptionally large depth penetration with less phototoxicity. This system becomes more and more an inspiring tool for a non-invasive imaging system to realize “optical biopsy” and to examine the functions of living cells. In this review, we briefly present the physical principles and properties of multiphoton microscopy as well as the current applications in biological fields. In addition, we address what we see as the future potential of multiphoton microscopy for gastroenterologic research.
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Abstract
We report a two-photon fluorescent probe (PN1) that can be excited by 750 nm femto-second pulses, shows high photostability and negligible toxicity, and can visualize H(2)O(2) distribution in live cells and tissue by two-photon microscopy.
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Affiliation(s)
- Chul Chung
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, 136-701, Korea
| | - Duangkhae Srikun
- Department of Chemistry and the Howard Hughes Medical Institute, University of California, Berkeley, California 94720, USA
| | - Chang Su Lim
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, 136-701, Korea
| | - Christopher J. Chang
- Department of Chemistry and the Howard Hughes Medical Institute, University of California, Berkeley, California 94720, USA
| | - Bong Rae Cho
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, 136-701, Korea
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48
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Affiliation(s)
- Ji Hoon Son
- Department of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
| | - Chang Su Lim
- Department of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
| | - Ji Hee Han
- Department of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
| | | | - Hwan Myung Kim
- Division of Energy Systems Research, Ajou University, Suwon 443-749, Korea
| | - Bong Rae Cho
- Department of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
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Chung C, Srikun D, Lim CS, Chang CJ, Cho BR. A two-photon fluorescent probe for ratiometric imaging of hydrogen peroxide in live tissue. J Clin Neurosci 2011; 18:1336-9. [PMID: 21792449 DOI: 10.1016/j.jocn.2011.02.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 02/16/2011] [Accepted: 02/22/2011] [Indexed: 12/21/2022]
Abstract
We report a two-photon fluorescent probe (PN1) that can be excited by 750 nm femto-second pulses, shows high photostability and negligible toxicity, and can visualize H(2)O(2) distribution in live cells and tissue by two-photon microscopy.
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Affiliation(s)
- Chul Chung
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, 136-701, Korea
| | - Duangkhae Srikun
- Department of Chemistry and the Howard Hughes Medical Institute, University of California, Berkeley, California 94720, USA
| | - Chang Su Lim
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, 136-701, Korea
| | - Christopher J Chang
- Department of Chemistry and the Howard Hughes Medical Institute, University of California, Berkeley, California 94720, USA
| | - Bong Rae Cho
- Department of Chemistry, Korea University, 1-Anamdong, Seoul, 136-701, Korea
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50
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Lim CS, Masanta G, Kim HJ, Han JH, Kim HM, Cho BR. Ratiometric detection of mitochondrial thiols with a two-photon fluorescent probe. J Am Chem Soc 2011; 133:11132-5. [PMID: 21718072 DOI: 10.1021/ja205081s] [Citation(s) in RCA: 283] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report a ratiometric two-photon probe (SSH-Mito) for mitochondrial thiols. This probe shows a marked blue-to-yellow emission color change in response to RSH, a significant two-photon cross section, good mitochondrial thiol selectivity, low cytotoxicity, and insensitivity to pH over the biologically relevant pH range, allowing the direct visualization of RSH levels in live cells as well as in living tissues at 90-190 μm depth without interference from other biologically relevant species through the use of two-photon microscopy.
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Affiliation(s)
- Chang Su Lim
- Department of Chemistry, Korea University, 1-Anamdong, Seoul 136-701, Korea
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