51
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Yadav AK, Reinhardt CJ, Arango AS, Huff HC, Dong L, Malkowski MG, Das A, Tajkhorshid E, Chan J. An Activity-Based Sensing Approach for the Detection of Cyclooxygenase-2 in Live Cells. Angew Chem Int Ed Engl 2020; 59:3307-3314. [PMID: 31854058 PMCID: PMC7416425 DOI: 10.1002/anie.201914845] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Indexed: 01/05/2023]
Abstract
Cyclooxygenase-2 (COX-2) overexpression is prominent in inflammatory diseases, neurodegenerative disorders, and cancer. Directly monitoring COX-2 activity within its native environment poses an exciting approach to account for and illuminate the effect of the local environments on protein activity. Herein, we report the development of CoxFluor, the first activity-based sensing approach for monitoring COX-2 within live cells with confocal microscopy and flow cytometry. CoxFluor strategically links a natural substrate with a dye precursor to engage both the cyclooxygenase and peroxidase activities of COX-2. This catalyzes the release of resorufin and the natural product, as supported by molecular dynamics and ensemble docking. CoxFluor enabled the detection of oxygen-dependent changes in COX-2 activity that are independent of protein expression within live macrophage cells.
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Affiliation(s)
- Anuj K Yadav
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Christopher J Reinhardt
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Andres S Arango
- Center for Biophysics and Quantitative Biology, Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Hannah C Huff
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Liang Dong
- Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14203, USA
| | - Michael G Malkowski
- Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14203, USA
| | - Aditi Das
- Center for Biophysics and Quantitative Biology, Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Emad Tajkhorshid
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Center for Biophysics and Quantitative Biology, Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jefferson Chan
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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52
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Yadav AK, Reinhardt CJ, Arango AS, Huff HC, Dong L, Malkowski MG, Das A, Tajkhorshid E, Chan J. An Activity‐Based Sensing Approach for the Detection of Cyclooxygenase‐2 in Live Cells. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914845] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Anuj K. Yadav
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Christopher J. Reinhardt
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Andres S. Arango
- Center for Biophysics and Quantitative Biology Department of Biochemistry University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Hannah C. Huff
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Liang Dong
- Department of Structural Biology Jacobs School of Medicine and Biomedical Sciences University at Buffalo Buffalo NY 14203 USA
| | - Michael G. Malkowski
- Department of Structural Biology Jacobs School of Medicine and Biomedical Sciences University at Buffalo Buffalo NY 14203 USA
| | - Aditi Das
- Center for Biophysics and Quantitative Biology Department of Biochemistry University of Illinois at Urbana-Champaign Urbana IL 61801 USA
- Department of Comparative Biosciences University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Emad Tajkhorshid
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
- Center for Biophysics and Quantitative Biology Department of Biochemistry University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Jefferson Chan
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
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53
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Kakiuchi R, Hirayama T, Yanagisawa D, Tooyama I, Nagasawa H. A 19F-MRI probe for the detection of Fe(ii) ions in an aqueous system. Org Biomol Chem 2020; 18:5843-5849. [DOI: 10.1039/d0ob00903b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An activity-based 19F-MRI probe that showed a chemical shift change in response to Fe(ii) was developed.
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Affiliation(s)
- Ryo Kakiuchi
- Laboratory of Pharmaceutical and Medicinal Chemistry
- Gifu Pharmaceutical University
- Gifu
- Japan
| | - Tasuku Hirayama
- Laboratory of Pharmaceutical and Medicinal Chemistry
- Gifu Pharmaceutical University
- Gifu
- Japan
| | - Daijiro Yanagisawa
- Molecular Neuroscience Research Center
- Shiga University of Medical Science
- Shiga
- Japan
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center
- Shiga University of Medical Science
- Shiga
- Japan
| | - Hideko Nagasawa
- Laboratory of Pharmaceutical and Medicinal Chemistry
- Gifu Pharmaceutical University
- Gifu
- Japan
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54
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Abstract
Reactivity-based organic bioprobes have been increasingly designed and developed in the last couple of years to address important questions in numerous fields, particularly in biology and medicine. Contrary to the conventional lock-and-key bioprobes, which rely on molecular recognition to probe biological systems and impart sensing specificity, reactivity-based bioprobes capitalize on molecular reactivity for selective target detection. In fact, reactivity-based sensing exploits the intrinsic differences in chemical reactivity to differentiate various chemical species possessing similar size and shape in biological systems. This unique sensing mechanism has been effective for the detection of a wide range of chemical analytes in living cells, tissues, and animals, although bioprobes with additional functionalities are increasingly required in the quest to unravel and understand the complex biological systems. This is why the integration of diagnostic and therapeutic functions in one theranostic platform has become a continuous pursuit in the development of bioprobes in recent years. To this end, numerous design and synthetic approaches have been explored, notably that combining different organic materials with distinct functionalities into one integrated system, also known as "all-in-one" strategy. Nevertheless, the "all-in-one" strategy is prone to design complexity and unsatisfactory reproducibility. To minimize these undesirable hurdles, the deliberate design and engineering of simple organic molecules with multiple functionalities have been actively pursued, leading to the emergence of a unique approach known as "one-for-all" strategy. A prominent example of this approach leverages on fluorogens with aggregation-induced emission (AIE) characteristic. Through smart molecular engineering, we and other groups have recently shown that conventional organic AIE fluorogens can be specifically tailored to offer both imaging and therapeutic functionalities, such as photosensitizing ability to facilitate photodynamic therapy. The creation of this new class of versatile organic theranostic bioprobes with simultaneous imaging and therapeutic capabilities has further enabled image-guided chemotherapy and image-guided photodynamic therapy. Essentially, from this endeavor, replacing the fluorophores of conventional reactivity-based bioprobes with multifunctional molecules will yield reactivity-based organic theranostic bioprobes with enhanced capabilities and improved performance. In this Account, we summarize the latest advancement of reactivity-based theranostic bioprobes. To start with, we discuss the fundamental differences between conventional lock-and-key and reactivity-based sensing mechanisms, followed by general design routes of reactivity-based organic theranostic bioprobes. We then describe our efforts in recent years in formulating reactivity-based organic biosensing/imaging probes and multifunctional theranostic probes as well as in utilizing these bioprobes in detecting various chemical species in living systems, such as free radicals and toxins, and in diagnosing and treating cancer and bacterial infections. Finally, we highlight current challenges and opportunities in the conclusions and outlook section. With this Account, we seek to further stimulate research activities and closer collaborations among the research fields of chemistry, materials, and biology to push the boundary of this emerging field and promote reactivity-based theranostics for practical applications and clinical translations.
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Affiliation(s)
- Kenry
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Kok Chan Chong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore 117585, Singapore
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55
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Gnaim S, Shabat D. Activity-Based Optical Sensing Enabled by Self-Immolative Scaffolds: Monitoring of Release Events by Fluorescence or Chemiluminescence Output. Acc Chem Res 2019; 52:2806-2817. [PMID: 31483607 DOI: 10.1021/acs.accounts.9b00338] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Functional molecular scaffolds comprised of self-immolative adaptors are being used in widespread applications in the fields of enzyme activity analyses, signal amplification, and bioimaging. Optically detected chemical probes are very promising compounds for sensing and diagnosis, since they present several attractive features such as high specificity, low detection limits, fast response times, and technical simplicity. During the last two decades, we have developed several distinct molecular scaffolds that harness the self-immolative disassembly feature of these adaptors to amplify chromogenic output for diagnosis and drug delivery applications. In order to study the molecular behavior of the various amplification systems, an optical output, used to monitor the progress of the disassembly pattern, was required. Therefore, over the course of our research, diverse molecular scaffolds that produce an optical signal in response to a disassembly step, were evaluated. These optically active scaffolds have been incorporated into self-immolative dendrimers and self-immolative polymers to implement unique disassembly properties that result with linear and exponential signal amplification capabilities. In addition, some scaffolds, aimed for linker technology, were used in delivery systems to monitor release of drug molecules. The optical signal used to monitor the release event could be produced by analysis of reporter molecules with chromogenic or fluorogenic properties. Recently, we have also developed molecular scaffolds modified to produce a chemiluminescent signal to monitor the self-immolative disassembly step. The main advantage of these scaffolds over others is the use of chemiluminescence as an output signal. It is well-known that chemiluminescence is considered as one the most sensitive diagnostic methods due to its high signal-to-noise ratio. The unique structures of the self-immolative chemiluminescence scaffolds have been used in the design of three different distinctive concepts: self-immolative chemiluminescence polymers, auto-inductive amplification systems with chemiluminescence signal and monitoring of drug release by a chemiluminescence output. Furthermore, we reported the design and synthesis of the first theranostic prodrug for the monitoring of drug release achieved by a chemiluminescence mode of action. Quinone-methide elimination has proven to serve as a valuable functional tool for composing molecular scaffolds with self-immolative capabilities. Such scaffolds function as molecular adaptors that can almost simultaneously release a target molecule with an accompanied emission of a light signal that is used to monitor the release event. We anticipate that these self-immolative scaffolds will continue to find utility as functional linkers in various chemical and biological research areas such as drug delivery, theranostic applications, and as molecular sensors with signal amplification.
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Affiliation(s)
- Samer Gnaim
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel Aviv 69978 Israel
| | - Doron Shabat
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel Aviv 69978 Israel
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56
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Abstract
Fluorescent sensing has emerged as a powerful tool for detecting various analytes and visualizing numerous biological processes by virtue of its superb sensitivity, rapidness, excellent temporal resolution, easy operation, and low cost. Of particular interest is activity-based sensing (ABS), a burgeoning sensing approach that is actualized on the basis of dynamic molecular reactivity rather than conventional lock-and-key molecular recognition. ABS has been recognized to possess some distinct advantages, such as high specificity, extraordinary sensitivity, and accurate signal outputs. A majority of ABS sensors are constructed by modifying conventional fluorogens, which are strongly emissive when molecularly dissolved in solvents but experience emission quenching upon aggregate formation or concentration increase. The aggregation-caused quenching (ACQ) phenomenon leads to a limited amount of labeling of the analyte with the sensor and low photobleaching resistance, which could impede practical applications of the ABS protocol. As an anti-ACQ phenomenon, aggregation-induced emission (AIE) provides a straightforward solution to the ACQ problem. Thanks to their intrinsic advantages, including high photobleaching threshold, high signal-to-noise ratio, fluorescence turn-on nature, and large Stokes shift, AIE-active luminogens (AIEgens) represent a class of extraordinary fluorogen alternatives for the ABS protocol. The use of AIEgen-involved ABS can integrate the advantages of AIEgens and ABS, and additionally, the AIE process offers some unique properties to the ABS approach. For instance, in some cases of water-soluble AIEgen-involved ABS, chemical reaction not only leads to a chang in the emission color of the AIEgens but also causes solubility variations, which could result in specific "light-up" signaling. In this Account, the basic concepts and mechanistic insights of the ABS approach involving the AIE principle are briefly summarized, and then we highlight the new breakthroughs, seminal studies, and trends in the area that have been most recently reported by our group. This emerging sensing protocol has been successfully utilized for detecting an array of targets including ions, small molecules, biomacromolecules, and microenvironments, all of which closely relate to human health, medical, and public concerns. These detections are smoothly achieved on the basis of various reactions (e.g., hydrolysis, boronate cleavage, dephosphorylation, addition, cyclization, and rearrangement reactions) through different sensing principles. In these studies, the AIEgen-involved ABS strategy generally shows good biocompatibility, high selectivity, excellent reliability and high signal contrast, strongly indicating its great potential for high-tech innovations in the sensing field, among which bioprobing is of particular interest. With this Account, we hope to spark new ideas and inspire new endeavors in this emerging research area, further promoting state-of-the-art developments in the field of sensing.
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Affiliation(s)
- Dong Wang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute of Molecular Functional Materials, State Key Laboratory of Neuroscience, Division of Biomedical Engineering and Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
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57
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Jahng JWS, Alsaadi RM, Palanivel R, Song E, Hipolito VEB, Sung HK, Botelho RJ, Russell RC, Sweeney G. Iron overload inhibits late stage autophagic flux leading to insulin resistance. EMBO Rep 2019; 20:e47911. [PMID: 31441223 DOI: 10.15252/embr.201947911] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 07/18/2019] [Accepted: 07/26/2019] [Indexed: 12/21/2022] Open
Abstract
Iron overload, a common clinical occurrence, is implicated in the metabolic syndrome although the contributing pathophysiological mechanisms are not fully defined. We show that prolonged iron overload results in an autophagy defect associated with accumulation of dysfunctional autolysosomes and loss of free lysosomes in skeletal muscle. These autophagy defects contribute to impaired insulin-stimulated glucose uptake and insulin signaling. Mechanistically, we show that iron overload leads to a decrease in Akt-mediated repression of tuberous sclerosis complex (TSC2) and Rheb-mediated mTORC1 activation on autolysosomes, thereby inhibiting autophagic-lysosome regeneration. Constitutive activation of mTORC1 or iron withdrawal replenishes lysosomal pools via increased mTORC1-UVRAG signaling, which restores insulin sensitivity. Induction of iron overload via intravenous iron-dextran delivery in mice also results in insulin resistance accompanied by abnormal autophagosome accumulation, lysosomal loss, and decreased mTORC1-UVRAG signaling in muscle. Collectively, our results show that chronic iron overload leads to a profound autophagy defect through mTORC1-UVRAG inhibition and provides new mechanistic insight into metabolic syndrome-associated insulin resistance.
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Affiliation(s)
| | | | | | - Erfei Song
- Department of Biology, York University, Toronto, ON, Canada
| | | | | | - Roberto Jorge Botelho
- Department of Chemistry and Biology and the Molecular Science Graduate Program, Ryerson University, Toronto, ON, Canada
| | - Ryan Charles Russell
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Gary Sweeney
- Department of Biology, York University, Toronto, ON, Canada
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58
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Lv H, Shang P. The significance, trafficking and determination of labile iron in cytosol, mitochondria and lysosomes. Metallomics 2019; 10:899-916. [PMID: 29923582 DOI: 10.1039/c8mt00048d] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The labile iron pool (LIP) is a pool of chelatable and redox-active iron, not only essential for a wide variety of metabolic process, but also as a catalyst in the Fenton reaction, causing the release of hazardous reactive oxygen species (ROS) with potential for inducing oxidative stress and cell damage. The cellular LIP represents the entirety of every heterogenous sub-pool of iron, not only present in the cytosol, but also in mitochondria, lysosomes and the nucleus, which have all been detected and characterized by various fluorescent methods. Accumulated evidence indicates that alterations in the intracellular LIP can substantially contribute to a variety of injurious processes and initiate pathological development. Herein, we present our understanding of the role of the cellular LIP. To fully review the LIP, firstly, the significance of cellular labile iron in different subcellular compartments is presented. And then, the trafficking processes of cellular labile iron between/in cytosol, mitochondria and lysosomes are discussed in detail. Then, the recent progress in uncovering and assessing the cellular LIP by fluorescent methods have been noted. Overall, this summary may help to comprehensively envision the important physiological and pathological roles of the LIP and shed light on profiling the LIP in a real-time and nondestructive manner with fluorescent methods. Undoubtedly, with the advent and development of iron biology, a better understanding of iron, especially the LIP, may also enhance treatments for iron-related diseases.
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Affiliation(s)
- Huanhuan Lv
- School of Life Sciences, Northwestern Polytechnical University, Youyi Xilu 127, 7100072, Xi'an, Shaanxi, China
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59
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Lee S, Uliana A, Taylor MK, Chakarawet K, Bandaru SRS, Gul S, Xu J, Ackerman CM, Chatterjee R, Furukawa H, Reimer JA, Yano J, Gadgil A, Long GJ, Grandjean F, Long JR, Chang CJ. Iron detection and remediation with a functionalized porous polymer applied to environmental water samples. Chem Sci 2019; 10:6651-6660. [PMID: 31367318 PMCID: PMC6624977 DOI: 10.1039/c9sc01441a] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 05/21/2019] [Indexed: 12/11/2022] Open
Abstract
Iron is one of the most abundant elements in the environment and in the human body. As an essential nutrient, iron homeostasis is tightly regulated, and iron dysregulation is implicated in numerous pathologies, including neuro-degenerative diseases, atherosclerosis, and diabetes. Endogenous iron pool concentrations are directly linked to iron ion uptake from environmental sources such as drinking water, providing motivation for developing new technologies for assessing iron(ii) and iron(iii) levels in water. However, conventional methods for measuring aqueous iron pools remain laborious and costly and often require sophisticated equipment and/or additional processing steps to remove the iron ions from the original environmental source. We now report a simplified and accurate chemical platform for capturing and quantifying the iron present in aqueous samples through use of a post-synthetically modified porous aromatic framework (PAF). The ether/thioether-functionalized network polymer, PAF-1-ET, exhibits high selectivity for the uptake of iron(ii) and iron(iii) over other physiologically and environmentally relevant metal ions. Mössbauer spectroscopy, XANES, and EXAFS measurements provide evidence to support iron(iii) coordination to oxygen-based ligands within the material. The polymer is further successfully employed to adsorb and remove iron ions from groundwater, including field sources in West Bengal, India. Combined with an 8-hydroxyquinoline colorimetric indicator, PAF-1-ET enables the simple and direct determination of the iron(ii) and iron(iii) ion concentrations in these samples, providing a starting point for the design and use of molecularly-functionalized porous materials for potential dual detection and remediation applications.
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Affiliation(s)
- Sumin Lee
- Department of Chemistry , University of California , Berkeley , CA 94720 , USA .
| | - Adam Uliana
- Department of Chemical and Biomolecular Engineering , University of California , Berkeley , CA 94720 , USA
| | - Mercedes K Taylor
- Department of Chemistry , University of California , Berkeley , CA 94720 , USA .
| | | | - Siva Rama Satyam Bandaru
- Department of Civil and Environmental Engineering , University of California , Berkeley , CA 94720 , USA
| | - Sheraz Gul
- Molecular Biophysics and Integrated Bioimaging Division , Lawrence Berkeley National Laboratory , Berkeley , CA 94720 , USA
| | - Jun Xu
- Department of Chemical and Biomolecular Engineering , University of California , Berkeley , CA 94720 , USA
| | - Cheri M Ackerman
- Department of Chemistry , University of California , Berkeley , CA 94720 , USA .
| | - Ruchira Chatterjee
- Molecular Biophysics and Integrated Bioimaging Division , Lawrence Berkeley National Laboratory , Berkeley , CA 94720 , USA
| | - Hiroyasu Furukawa
- Department of Chemistry , University of California , Berkeley , CA 94720 , USA .
| | - Jeffrey A Reimer
- Department of Chemical and Biomolecular Engineering , University of California , Berkeley , CA 94720 , USA
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , CA 94720 , USA .
| | - Junko Yano
- Molecular Biophysics and Integrated Bioimaging Division , Lawrence Berkeley National Laboratory , Berkeley , CA 94720 , USA
| | - Ashok Gadgil
- Department of Civil and Environmental Engineering , University of California , Berkeley , CA 94720 , USA
| | - Gary J Long
- Department of Chemistry , Missouri University of Science and Technology , University of Missouri , Rolla , MO 65409 , USA
| | - Fernande Grandjean
- Department of Chemistry , Missouri University of Science and Technology , University of Missouri , Rolla , MO 65409 , USA
| | - Jeffrey R Long
- Department of Chemistry , University of California , Berkeley , CA 94720 , USA .
- Department of Chemical and Biomolecular Engineering , University of California , Berkeley , CA 94720 , USA
- Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , CA 94720 , USA .
| | - Christopher J Chang
- Department of Chemistry , University of California , Berkeley , CA 94720 , USA .
- Department of Molecular and Cell Biology , University of California , Berkeley , CA 94720 , USA
- Howard Hughes Medical Institute , University of California , Berkeley , CA 94720 , USA
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60
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Iovan DA, Jia S, Chang CJ. Inorganic Chemistry Approaches to Activity-Based Sensing: From Metal Sensors to Bioorthogonal Metal Chemistry. Inorg Chem 2019; 58:13546-13560. [DOI: 10.1021/acs.inorgchem.9b01221] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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61
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Muir RK, Zhao N, Wei J, Wang YH, Moroz A, Huang Y, Chen YC, Sriram R, Kurhanewicz J, Ruggero D, Renslo AR, Evans MJ. Measuring Dynamic Changes in the Labile Iron Pool in Vivo with a Reactivity-Based Probe for Positron Emission Tomography. ACS CENTRAL SCIENCE 2019; 5:727-736. [PMID: 31041393 PMCID: PMC6487455 DOI: 10.1021/acscentsci.9b00240] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Indexed: 05/19/2023]
Abstract
Redox cycling of iron powers various enzyme functions crucial for life, making the study of iron acquisition, storage, and disposition in the whole organism a worthy topic of inquiry. However, despite its important role in biology and disease, imaging iron in animals with oxidation-state specificity remains an outstanding problem in biology and medicine. Here we report a first-generation reactivity-based probe of labile ferrous iron suitable for positron emission tomography studies in live animals. The responses of this reagent to systemic changes in labile iron disposition were revealed using iron supplementation and sequestration treatments in mice, while the potential of this approach for in vivo imaging of cancer was demonstrated using genetically and pathologically diverse mouse models, including spontaneous tumors arising in a genetically engineered model of prostate cancer driven by loss of PTEN.
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Affiliation(s)
- Ryan K. Muir
- Department
of Pharmaceutical Chemistry, University
of California, San Francisco, San Francisco, California 94158, United States
- Graduate
Program in Chemistry & Chemical Biology, University of California, San Francisco, San Francisco, California 94158, United States
| | - Ning Zhao
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
| | - Junnian Wei
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
| | - Yung-hua Wang
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
| | - Anna Moroz
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
| | - Yangjie Huang
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
| | - Ying-Chu Chen
- Department
of Pharmaceutical Chemistry, University
of California, San Francisco, San Francisco, California 94158, United States
| | - Renuka Sriram
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
| | - John Kurhanewicz
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
| | - Davide Ruggero
- Helen
Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California 94158, United States
- Department
of Cellular and Molecular Pharmacology, University of California, San Francisco, San Francisco, California 94158, United States
| | - Adam R. Renslo
- Department
of Pharmaceutical Chemistry, University
of California, San Francisco, San Francisco, California 94158, United States
- Helen
Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California 94158, United States
| | - Michael J. Evans
- Department
of Pharmaceutical Chemistry, University
of California, San Francisco, San Francisco, California 94158, United States
- Department
of Radiology and Biomedical Imaging, University
of California, San Francisco, San Francisco, California 94158, United States
- Helen
Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, California 94158, United States
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62
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Li Y, Zhao Z, Xiao Y, Wang X, Jiao X, Xie X, Zhang J, Tang B. Reactivity Modulation of Benzopyran-Coumarin Platform by Introducing Electron-Withdrawing Groups: Specific Detection of Biothiols and Peroxynitrite. Anal Chem 2019; 91:6097-6102. [DOI: 10.1021/acs.analchem.9b00636] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yong Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Zhiwen Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Yongsheng Xiao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Xu Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Xiaoyun Jiao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Xilei Xie
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Jian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, P. R. China
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Liu C, Zhang R, Zhang W, Liu J, Wang YL, Du Z, Song B, Xu ZP, Yuan J. “Dual-Key-and-Lock” Ruthenium Complex Probe for Lysosomal Formaldehyde in Cancer Cells and Tumors. J Am Chem Soc 2019; 141:8462-8472. [DOI: 10.1021/jacs.8b13898] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Chaolong Liu
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China
| | - Run Zhang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Wenzhu Zhang
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China
| | - Jianping Liu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Yong-Lei Wang
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Zhongbo Du
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China
| | - Bo Song
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Jingli Yuan
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China
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64
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Hirayama T. Fluorescent probes for the detection of catalytic Fe(II) ion. Free Radic Biol Med 2019; 133:38-45. [PMID: 29990536 DOI: 10.1016/j.freeradbiomed.2018.07.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/05/2018] [Accepted: 07/06/2018] [Indexed: 01/01/2023]
Abstract
Iron (Fe) is the most abundant redox-active metal ion in the human body, and its redox-active inter-convertible multiple oxidation states contributes to numerous essential biological processes. Moreover, iron overload can potentially cause cellular damage and death, as wel as numerous diseases through the aberrant production of highly reactive oxidative species (hROS). Protein-free or weakly-protein-bound Fe ions play a pivotal role as catalytic reactants of the Fenton reaction. In this reaction, hROS, such as hydroxyl radicals and high valent-iron-oxo species, are generated by a reaction between hydrogen peroxide and Fe(II), which is re-generated through reduction using abundant intracellular reductants, such as glutathione. This results in the catalytic evolution of hROS. Thus, selective detection of the catalytic Fe(II) in the living systems can explain both of the pathological and physiological functions of Fe(II). Written from the perspective of their modes of actions, this paper presents recent advances in the development of fluorescent and bioluminescent probes that can selectively detect catalytic Fe(II) together with their biological applications.
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Affiliation(s)
- Tasuku Hirayama
- Laboratory of Pharmaceutical and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4, Daigaku-nishi, Gifu-shi, Gifu 501-1196, Japan.
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65
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Lee YH, Verwilst P, Kim HS, Ju J, Kim JS, Kim K. Enhanced sensitivity of fluorescence-based Fe(ii) detection by freezing. Chem Commun (Camb) 2019; 55:12136-12139. [DOI: 10.1039/c9cc05809e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first example of combining the fluorescent probe-based freeze concentration effect with N-oxide chemistry is reported for the highly sensitive and selective detection of ferrous ion (Fe(ii)).
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Affiliation(s)
- Yun Hak Lee
- Korea Polar Research Institute (KOPRI)
- Incheon
- Republic of Korea
| | - Peter Verwilst
- Department of Chemistry
- Korea University
- Seoul
- Republic of Korea
| | - Hyeong Seok Kim
- Department of Chemistry
- Korea University
- Seoul
- Republic of Korea
| | - Jinjung Ju
- Korea Polar Research Institute (KOPRI)
- Incheon
- Republic of Korea
- Department of Environmental Sciences and Biotechnology, Hallym University
- Chuncheon
| | - Jong Seung Kim
- Department of Chemistry
- Korea University
- Seoul
- Republic of Korea
| | - Kitae Kim
- Korea Polar Research Institute (KOPRI)
- Incheon
- Republic of Korea
- Department of Polar Sciences
- University of Science and Technology (UST)
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66
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Venkataramani V, Doeppner TR, Willkommen D, Cahill CM, Xin Y, Ye G, Liu Y, Southon A, Aron A, Au-Yeung HY, Huang X, Lahiri DK, Wang F, Bush AI, Wulf GG, Ströbel P, Michalke B, Rogers JT. Manganese causes neurotoxic iron accumulation via translational repression of amyloid precursor protein and H-Ferritin. J Neurochem 2018; 147:831-848. [PMID: 30152072 PMCID: PMC6310653 DOI: 10.1111/jnc.14580] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 12/24/2022]
Abstract
For more than 150 years, it is known that occupational overexposure of manganese (Mn) causes movement disorders resembling Parkinson's disease (PD) and PD-like syndromes. However, the mechanisms of Mn toxicity are still poorly understood. Here, we demonstrate that Mn dose- and time-dependently blocks the protein translation of amyloid precursor protein (APP) and heavy-chain Ferritin (H-Ferritin), both iron homeostatic proteins with neuroprotective features. APP and H-Ferritin are post-transcriptionally regulated by iron responsive proteins, which bind to homologous iron responsive elements (IREs) located in the 5'-untranslated regions (5'-UTRs) within their mRNA transcripts. Using reporter assays, we demonstrate that Mn exposure repressed the 5'-UTR-activity of APP and H-Ferritin, presumably via increased iron responsive proteins-iron responsive elements binding, ultimately blocking their protein translation. Using two specific Fe2+ -specific probes (RhoNox-1 and IP-1) and ion chromatography inductively coupled plasma mass spectrometry (IC-ICP-MS), we show that loss of the protective axis of APP and H-Ferritin resulted in unchecked accumulation of redox-active ferrous iron (Fe2+ ) fueling neurotoxic oxidative stress. Enforced APP expression partially attenuated Mn-induced generation of cellular and lipid reactive oxygen species and neurotoxicity. Lastly, we could validate the Mn-mediated suppression of APP and H-Ferritin in two rodent in vivo models (C57BL6/N mice and RjHan:SD rats) mimicking acute and chronic Mn exposure. Together, these results suggest that Mn-induced neurotoxicity is partly attributable to the translational inhibition of APP and H-Ferritin resulting in impaired iron metabolism and exacerbated neurotoxic oxidative stress. OPEN SCIENCE BADGES: This article has received a badge for *Open Materials* because it provided all relevant information to reproduce the study in the manuscript. The complete Open Science Disclosure form for this article can be found at the end of the article. More information about the Open Practices badges can be found at https://cos.io/our-services/open-science-badges/.
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Affiliation(s)
- Vivek Venkataramani
- Department of Hematology and Medical Oncology, University Medical Center Göttingen (UMG), Robert-Koch-Str. 40, 37075 Göttingen, Germany
- Institute of Pathology, University Medical Center Göttingen (UMG), Robert-Koch-Str. 40, 37075 Göttingen, Germany
| | - Thorsten R. Doeppner
- Department of Neurology, University Medical Center Göttingen (UMG), Robert-Koch-Str. 40, 37075 Göttingen, Germany
| | - Desiree Willkommen
- Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Research Unit Analytical BioGeoChemistry, Ingolstädter Landstr. 1, 85764 Neuherberg
| | - Catherine M. Cahill
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Yongjuan Xin
- Department of Nutrition, Precision Nutrition Innovation Center, School of Public Health, Zhengzhou University, Zhengzhou 450001
- Department of Nutrition, Nutrition Discovery Innovation Center, Institute of Nutrition and Food Safety, School of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Guilin Ye
- Department of Nutrition, Precision Nutrition Innovation Center, School of Public Health, Zhengzhou University, Zhengzhou 450001
- Department of Nutrition, Nutrition Discovery Innovation Center, Institute of Nutrition and Food Safety, School of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yanyan Liu
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Adam Southon
- Melbourne Dementia Research Centre, Florey Institute of Neuroscience and Mental Health, University of Melbourne, 30 Royal Parade, Parkville Vic, Australia 3052
| | - Allegra Aron
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Ho Yu Au-Yeung
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Xudong Huang
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Debomoy K. Lahiri
- Department of Psychiatry, Indiana Alzheimer Disease Center, Stark Neurosciences Research Institute, Indiana University School of Medicine
| | - Fudi Wang
- Department of Nutrition, Precision Nutrition Innovation Center, School of Public Health, Zhengzhou University, Zhengzhou 450001
- Department of Nutrition, Nutrition Discovery Innovation Center, Institute of Nutrition and Food Safety, School of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Ashley I. Bush
- Melbourne Dementia Research Centre, Florey Institute of Neuroscience and Mental Health, University of Melbourne, 30 Royal Parade, Parkville Vic, Australia 3052
| | - Gerald G. Wulf
- Department of Hematology and Medical Oncology, University Medical Center Göttingen (UMG), Robert-Koch-Str. 40, 37075 Göttingen, Germany
| | - Philipp Ströbel
- Institute of Pathology, University Medical Center Göttingen (UMG), Robert-Koch-Str. 40, 37075 Göttingen, Germany
| | - Bernhard Michalke
- Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Research Unit Analytical BioGeoChemistry, Ingolstädter Landstr. 1, 85764 Neuherberg
| | - Jack T. Rogers
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
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Hirayama T, Inden M, Tsuboi H, Niwa M, Uchida Y, Naka Y, Hozumi I, Nagasawa H. A Golgi-targeting fluorescent probe for labile Fe(ii) to reveal an abnormal cellular iron distribution induced by dysfunction of VPS35. Chem Sci 2018; 10:1514-1521. [PMID: 30809369 PMCID: PMC6357701 DOI: 10.1039/c8sc04386h] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 11/22/2018] [Indexed: 12/16/2022] Open
Abstract
Fluctuation of labile Fe(ii) at Golgi apparatus was specifically detected by a new fluorescent probe.
Iron is involved in numerous physiologically essential processes in our body. However, excessive iron is a pathogenic factor in neurodegenerative diseases, causing aberrant oxidative stress. Divalent metal transporter 1 (DMT1) acts as a primary transporter of Fe(ii) ions. The intracellular delivery of DMT1 toward the cellular membrane via the trans-Golgi network during the endocytotic process is partially regulated by a retromer-mediated protein-sorting system comprising vacuolar protein-sorting proteins (VPSs). Thus, together with DMT1, the Golgi-apparatus acts as a hub organelle in the delivery system for intracellular Fe(ii) ions. Dysfunction of the VPS-relevant protein sorting system can induce the abnormal delivery of DMT1 toward lysosomes concomitantly with Fe(ii) ions. To explore this issue, we developed a fluorescent probe, Gol-SiRhoNox, for the Golgi-specific detection of Fe(ii) ions by integrating our original N-oxide-based Fe(ii)-specific chemical switch, a new Golgi-localizable chemical motif, and polarity-sensitive fluorogenic scaffold. Our synchronous imaging study using Gol-SiRhoNox and LysoRhoNox, a previously developed fluorescent probe for lysosomal Fe(ii), revealed that the intracellular distribution balance of Fe(ii) ions between the Golgi apparatus and lysosomes is normally Golgi-dominant, whereas the lysosome-specific elevation of Fe(ii) ions was observed in cells with induced dysfunction of VPS35, a member of the retromer complex. Treatment of cells with dysfunctional VPS35 with R55, a molecular chaperone, resulted in the restoration of the subcellular distribution of Fe(ii) ions to the Golgi-dominant state. These results indicate that the impairment of the DMT1 traffic machinery affects subcellular iron homeostasis, promoting Fe(ii) leakage at the Golgi and lysosomal accumulation of Fe(ii) through missorting of DMT1.
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Affiliation(s)
- Tasuku Hirayama
- Laboratory of Pharmaceutical and Medicinal Chemistry , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
| | - Masatoshi Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
| | - Hitomi Tsuboi
- Laboratory of Pharmaceutical and Medicinal Chemistry , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
| | - Masato Niwa
- Laboratory of Pharmaceutical and Medicinal Chemistry , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
| | - Yasuhiro Uchida
- Laboratory of Medical Therapeutics and Molecular Therapeutics , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
| | - Yuki Naka
- Laboratory of Medical Therapeutics and Molecular Therapeutics , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
| | - Isao Hozumi
- Laboratory of Medical Therapeutics and Molecular Therapeutics , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
| | - Hideko Nagasawa
- Laboratory of Pharmaceutical and Medicinal Chemistry , Gifu Pharmaceutical University , 1-25-4, Daigaku-Nishi , Gifu , 501-1196 , Japan .
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68
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Hirayama T. Development of Chemical Tools for Imaging of Fe(II) Ions in Living Cells: A Review. Acta Histochem Cytochem 2018; 51:137-143. [PMID: 30510327 PMCID: PMC6261839 DOI: 10.1267/ahc.18015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/13/2018] [Indexed: 12/18/2022] Open
Abstract
Intracellular labile iron is an iron species which is not or weakly bound to proteins and depicts an important effect on homeostatic regulation in cells. An excess or deficiency of iron can cause oxidative damage to key cellular biomolecules. The behavior and concentrations of labile iron are difficult to monitor, but the specific redox state of the Fe ions is relevant to the physiological and pathological properties that we would like to study. We have developed a series of turn-on type fluorescent probes that are highly selective to the labile Fe(II) ions, and we have tested their applications to cellular level imaging. These probes are based on N-oxide chemistry with a range of fluorophores that depict optimal performance for specific applications. Herein, I review the recent progress of our research and discuss prospects for future work to understand the relation between intracellular ion and oxidative stress.
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Affiliation(s)
- Tasuku Hirayama
- Laboratory of Pharmaceutical and Medicinal Chemistry, Gifu Pharmaceutical University
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69
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de Moliner F, King A, Dias GG, de Lima GF, de Simone CA, da Silva Júnior EN, Vendrell M. Quinone-Derived π-Extended Phenazines as New Fluorogenic Probes for Live-Cell Imaging of Lipid Droplets. Front Chem 2018; 6:339. [PMID: 30151362 PMCID: PMC6099520 DOI: 10.3389/fchem.2018.00339] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 07/19/2018] [Indexed: 01/14/2023] Open
Abstract
We describe a new synthetic methodology for the preparation of fluorescent π-extended phenazines from the naturally-occurring naphthoquinone lapachol. These novel structures represent the first fluorogenic probes based on the phenazine scaffold for imaging of lipid droplets in live cells. Systematic characterization and analysis of the compounds in vitro and in cells led to the identification of key structural features responsible for the fluorescent behavior of quinone-derived π-extended phenazines. Furthermore, live-cell imaging experiments identified one compound (P1) as a marker for intracellular lipid droplets with minimal background and enhanced performance over the lipophilic tracker Nile Red.
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Affiliation(s)
- Fabio de Moliner
- Medical Research Council Centre for Inflammation Research, The University of Edinburgh, Edinburgh, United Kingdom
| | - Aaron King
- Medical Research Council Centre for Inflammation Research, The University of Edinburgh, Edinburgh, United Kingdom
| | - Gleiston G. Dias
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Guilherme F. de Lima
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Eufrânio N. da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Marc Vendrell
- Medical Research Council Centre for Inflammation Research, The University of Edinburgh, Edinburgh, United Kingdom
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70
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Li D, Cheng J, Wang CK, Ying H, Hu Y, Han F, Li X. Bis-reaction-trigger as a strategy to improve the selectivity of fluorescent probes. Chem Commun (Camb) 2018; 54:8170-8173. [DOI: 10.1039/c8cc02830c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Equipping a fluorophore with two ONOO−-specific reaction triggers yielded a probe able to report various degrees of nitrosative stress in live cells.
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Affiliation(s)
- Dan Li
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Juan Cheng
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Cheng-Kun Wang
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Huazhou Ying
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Yongzhou Hu
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Feng Han
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Xin Li
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
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