1
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Liu D, Bauer N, Lu W, Yang X, Wang B. On the Question of Uncatalyzed CO Insertion into a Hydrazone Double Bond: A Comparative Study Using Different CO Sources and Substrates. J Org Chem 2024; 89:9551-9556. [PMID: 38888488 PMCID: PMC11232009 DOI: 10.1021/acs.joc.4c00936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Because of endogenous signaling roles of carbon monoxide (CO) and its demonstrated pharmacological effects, there has been extensive interests in developing fluorescent CO probes. Palladium-mediated CO insertion has been successfully used for such applications. However, recent years have seen many publications of using uncatalyzed CO insertion into a hydrazone double bond as a way to sense CO. Such chemistry has no precedents otherwise. Further, the rigor of the CO-sensing work was largely based on using ruthenium-carbonyl complexes such as CORM-3 as CO surrogates, which have been reported to have extensive chemical reactivity and to release largely CO2 instead of CO unless in the presence of a strong nucleophile such as dithionite. For all of these, it is important to reassess the feasibility of such a CO-insertion reaction. By studying two of the reported "CO probes" using CO gas, this study finds no evidence of CO insertion into a hydrazone double bond. Further, the chemical reaction between CO gas and a series of eight hydrazone compounds was conducted, leading to the same conclusion. Such findings are consistent with the state-of-the-art knowledge of carbonylation chemistry and do not support uncatalyzed CO insertion as a mechanism for developing fluorescent CO probes.
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Affiliation(s)
- Dongning Liu
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Nicola Bauer
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Wen Lu
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Xiaoxiao Yang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
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2
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Aki T, Tanaka H, Funakoshi T, Unuma K, Uemura K. Excessive N-acetylcysteine exaggerates glutathione redox homeostasis and apoptosis during acetaminophen exposure in Huh-7 human hepatoma cells. Biochem Biophys Res Commun 2023; 676:66-72. [PMID: 37487439 DOI: 10.1016/j.bbrc.2023.07.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 06/25/2023] [Accepted: 07/13/2023] [Indexed: 07/26/2023]
Abstract
Acetaminophen (APAP) hepatotoxicity is one of the biggest drawbacks of this relatively safe and widely used drug. In addition to its hepatotoxicity, APAP also cause comparable levels of toxicity on human hepatoma cells. Here we show activation of the intrinsic caspase-9/3 pathway of apoptosis followed by gasdermin E (GSDME) cleavage and subsequent ballooning in APAP (10 mM, 72 h)-treated Huh-7 human hepatocarcinoma cells. N-acetylcysteine (NAC), an antioxidant currently used as an antidote for APAP overdose, does not alleviate APAP toxicity in Huh-7 cells; NAC overdose (10 mM) rather aggravates APAP toxicity. NAC overdose not only aggravates cell death, but also decreases the cellular GSH/GSSG ratio, an indicator of redox homeostasis of glutathione. These results show for the first time that APAP-induced apoptosis in hepatoma cells is followed by secondary necrosis via the caspase-3/GSDME pathway. NAC overdose (10 mM) not only worsens the glutathione redox status, but also accelerates this pathway.
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Affiliation(s)
- Toshihiko Aki
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Hiroki Tanaka
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takeshi Funakoshi
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kana Unuma
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koichi Uemura
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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3
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Bauer N, Yuan Z, Yang X, Wang B. Plight of CORMs: The unreliability of four commercially available CO-releasing molecules, CORM-2, CORM-3, CORM-A1, and CORM-401, in studying CO biology. Biochem Pharmacol 2023; 214:115642. [PMID: 37321416 PMCID: PMC10529722 DOI: 10.1016/j.bcp.2023.115642] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/17/2023]
Abstract
Carbon monoxide (CO) is an endogenously produced gaseous signaling molecule with demonstrated pharmacological effects. In studying CO biology, three delivery forms have been used: CO gas, CO in solution, and CO donors of various types. Among the CO donors, four carbonyl complexes with either a transition metal ion or borane (BH3) (termed CO-releasing molecules or CORMs) have played the most prominent roles appearing in over 650 publications. These are CORM-2, CORM-3, CORM-A1, and CORM-401. Intriguingly, there have been unique biology findings that were only observed with these CORMs, but not CO gas; yet these properties were often attributed to CO, raising puzzling questions as to why CO source would make such a fundamental difference in terms of CO biology. Recent years have seen a large number of reports of chemical reactivity (e.g., catalase-like activity, reaction with thiol, and reduction of NAD(P)+) and demonstrated CO-independent biological activity for these four CORMs. Further, CORM-A1 releases CO in an idiosyncratic fashion; CO release from CORM-401 is strongly influenced or even dependent on reaction with an oxidant and/or a nucleophile; CORM-2 mostly releases CO2, not CO, after a water-gas shift reaction except in the presence of a strong nucleophile; and CORM-3 does not release CO except in the presence of a strong nucleophile. All these beg the question as to what constitutes an appropriate CO donor for studying CO biology. This review critically summarizes literature findings related to these aspects, with the aim of helping result interpretation when using these CORMs and development of essential criteria for an appropriate donor for studying CO biology.
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Affiliation(s)
- Nicola Bauer
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Zhengnan Yuan
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Xiaoxiao Yang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA.
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4
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Aki T, Kukita M, Takata M, Funakoshi T, Unuma K, Uemura K. Induction of filamin-C and its involvement in the regulation of cellular senescence and apoptosis in Huh-7 hepatoma cells during arsenic trioxide exposure. Biochem Biophys Res Commun 2023; 651:92-97. [PMID: 36801614 DOI: 10.1016/j.bbrc.2023.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/05/2023] [Accepted: 02/09/2023] [Indexed: 02/11/2023]
Abstract
Arsenic trioxide (ATO) is one of the most toxic inorganic arsenic compounds. In this study, we examined the effects of long-term (7 days) exposure to low dose (5 μM) ATO on a human hepatocellular carcinoma cell line, Huh-7. Along with apoptosis accompanied by secondary necrosis though GSDME cleavage, we observed enlarged and flattened cells adhering to the culture dish and surviving even after exposure to ATO. An increase in cyclin-dependent kinase inhibitor p21 levels as well as positive staining for senescence-associated β-galactosidase activity were observed in ATO-treated cells, indicating cellular senescence. Screening for both ATO-inducible proteins by MALDI-TOF-MS analysis and ATO-inducible genes by DNA microarray analysis showed a marked increase in filamin-C (FLNC), an actin cross-linking protein. Interestingly, the increase in FLNC was observed in both dead and surviving cells, suggesting that the upregulation of FLNC by ATO occurs in both apoptotic and senescent cells. Small interference RNA-mediated knock down of FLNC resulted in not only a reduction of senescence-associated enlarged morphology of the cells, but also an exacerbation of cell death. Taken together, these results suggest a regulatory role of FLNC in the execution of senescence as well as apoptosis during ATO exposure.
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Affiliation(s)
- Toshihiko Aki
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Mitsuki Kukita
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Mao Takata
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Takeshi Funakoshi
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kana Unuma
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koichi Uemura
- Department of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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5
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Bauer N, Yang X, Yuan Z, Wang B. Reassessing CORM-A1: redox chemistry and idiosyncratic CO-releasing characteristics of the widely used carbon monoxide donor. Chem Sci 2023; 14:3215-3228. [PMID: 36970102 PMCID: PMC10033827 DOI: 10.1039/d3sc00411b] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 02/19/2023] [Indexed: 03/06/2023] Open
Abstract
Redox activity and unreliable carbon monoxide production of CO donor, CORM-A1, presents new complications in its use for studying CO biology.
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Affiliation(s)
- Nicola Bauer
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, USA
| | - Xiaoxiao Yang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, USA
| | - Zhengnan Yuan
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, USA
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, USA
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6
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Inverse regulation of GSDMD and GSDME gene expression during LPS-induced pyroptosis in RAW264.7 macrophage cells. Apoptosis 2022; 27:14-21. [PMID: 35006493 DOI: 10.1007/s10495-022-01708-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2021] [Indexed: 11/02/2022]
Abstract
GSDMD and GSDME, members of the gasdermin protein family, are involved in the formation of plasma membrane channels contributing to cell rupture during a certain type of necrosis called pyroptosis. GSDMD is activated in response to immunological stimulation such as lipopolysaccharides (LPS) treatment while GSDME is mainly involved in drug-induced tumor cell death. Here we show that the expression of the GSDMD gene increases significantly during LPS-induced pyroptosis in RAW264.7 murine macrophage cells. In contrast, GSDME expression is decreased in the same cells. The increasing effect of LPS on GSDMD expression was observed only when the cells were cultured in high glucose (4.5 g/l) medium, suggesting that glucose availability is important for this effect. The effect of LPS on GSDMD expression is abolished by 2-deoxyglucose (2DG), confirming that glycolysis plays crucial roles in the increasing effect of LPS. Small interference RNA-mediated knock down of GSDMD or overexpression of GSDME causes LPS-induced pyroptosis to take place through GSDME rather than through GSDMD. Taken together, LPS regulates GSDMD and GSDME expression in opposite directions through, at least in part, its effect on glycolysis. This transcriptional regulation may contribute to the execution of pyroptosis in a GSDMD-dependent manner.
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7
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Yuan Z, Yang X, Wang B. Redox and catalase-like activities of four widely used carbon monoxide releasing molecules (CO-RMs). Chem Sci 2021; 12:13013-13020. [PMID: 34745532 PMCID: PMC8513939 DOI: 10.1039/d1sc03832j] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 09/05/2021] [Indexed: 12/30/2022] Open
Abstract
The pathophysiological roles of the endogenous signaling molecule, carbon monoxide (CO), have been extensively studied and validated in cell culture and animal models. Further, evidence supporting the therapeutic effects of CO in various human diseases has been mounting over the last two decades. Along this line, there has been intensive interest in developing various delivery forms including CO gas, CO in solution, metal–carbonyl complexes widely known as CO-releasing molecules (CO-RMs), and organic CO prodrugs. Among them, two ruthenium-based carbonyl complexes, CORM-2 and -3, occupy a very special place because they have been used in over 500 published studies. One of the mechanisms for CO's actions is known to be through attenuation of oxidative stress and regulation of production of reactive oxygen species (ROS). For this reason, it is important that CO delivery forms do not have intrinsic chemical redox properties. Herein, we describe our findings of catalase-like activities of CORM-2 and -3 in a CO-independent fashion, leading to the rapid degradation of hydrogen peroxide (H2O2) in PBS buffer (pH = 7.4) and in cell culture media. Further, we have found that CORM-2 and CORM-3 possess potent radical scavenging abilities. We have also studied two other widely used CO donors: CORM-401 and CORM-A1. Both showed chemical reactivity with ROS, but to a lesser degree than CORM-2 and -3. Because of the central role of ROS in some of the proposed mechanisms of actions for CO biology, the discovery of intrinsic chemical redox properties for these CO-RMs means that additional attention in designing proper controls is needed in future biological experiments using these CO-RMs for their CO-donating functions. Further, much more work is needed to understand the true implications of the chemical reactivity of these CO-RMs in cell-culture and animal-model studies of CO biology. Four CO-releasing molecules are found to degrade H2O2 and free radicals either catalytically (CORM-2 and -3) or through direct reactions (CORM-401 and -A1) in solution under near-physiological conditions.![]()
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Affiliation(s)
- Zhengnan Yuan
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University Atlanta Georgia 30303 USA
| | - Xiaoxiao Yang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University Atlanta Georgia 30303 USA
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University Atlanta Georgia 30303 USA
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8
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Kurihara M, Mukudai Y, Watanabe H, Asakura M, Abe Y, Houri A, Chikuda J, Shimane T, Shirota T. Autophagy prevents osteocyte cell death under hypoxic conditions. Cells Tissues Organs 2021; 210:326-338. [PMID: 34412050 DOI: 10.1159/000519086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 08/12/2021] [Indexed: 11/19/2022] Open
Affiliation(s)
- Mai Kurihara
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Yoshiki Mukudai
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Hitoshi Watanabe
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Mariko Asakura
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Yuzo Abe
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Asami Houri
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Junichiro Chikuda
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Toshikazu Shimane
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
| | - Tatsuo Shirota
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
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9
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Click, release, and fluoresce: In-vivo generation of CO with concomitant synthesis of a fluorescent reporter. Bioorg Med Chem 2021; 44:116297. [PMID: 34243045 DOI: 10.1016/j.bmc.2021.116297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/17/2021] [Accepted: 06/20/2021] [Indexed: 11/20/2022]
Abstract
Delivering a therapeutically active gaseous molecule represents very unique challenges in terms of both precise dosing and concentration assessment. To overcome these obstacles, there have been recent reports of using prodrug approaches for the in-vitro and in-vivo generation of carbon monoxide (CO), which is an endogenous signaling molecule with validated therapeutic efficacy in a range of animal models. Some key components of these approaches include the use of a hydrophobicity-driven Diels-Alder reaction under physiological conditions followed by a cheletropic reaction of the corresponding norbornadien-7-one intermediate, leading to extrusion of CO. With proper design, the same approach also leads to the formation of a fluorescent reporter, allowing for quantitative assessment of the amount of CO released. All these allow for a strategy of "click, release, and fluoresce" in delivering a precise dose of carbon monoxide with the ability to "self-report" delivery quantity and efficiency. This strategy has also been further refined to construct a CO delivery platform with additional functionalities such as bioorthogonal labeling, targeting, triggered release, and simultaneously delivery of more than one payload. This review highlights recent developments in this area.
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10
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Yang X, Lu W, Hopper CP, Ke B, Wang B. Nature's marvels endowed in gaseous molecules I: Carbon monoxide and its physiological and therapeutic roles. Acta Pharm Sin B 2021; 11:1434-1445. [PMID: 34221861 PMCID: PMC8245769 DOI: 10.1016/j.apsb.2020.10.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 08/03/2020] [Accepted: 09/07/2020] [Indexed: 02/08/2023] Open
Abstract
Nature has endowed gaseous molecules such as O2, CO2, CO, NO, H2S, and N2 with critical and diverse roles in sustaining life, from supplying energy needed to power life and building blocks for life's physical structure to mediating and coordinating cellular functions. In this article, we give a brief introduction of the complex functions of the various gaseous molecules in life and then focus on carbon monoxide as a specific example of an endogenously produced signaling molecule to highlight the importance of this class of molecules. The past twenty years have seen much progress in understanding CO's mechanism(s) of action and pharmacological effects as well as in developing delivery methods for easy administration. One remarkable trait of CO is its pleiotropic effects that have few parallels, except perhaps its sister gaseous signaling molecules such as nitric oxide and hydrogen sulfide. This review will delve into the sophistication of CO-mediated signaling as well as its validated pharmacological functions and possible therapeutic applications.
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Affiliation(s)
- Xiaoxiao Yang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Wen Lu
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
| | - Christopher P. Hopper
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
- Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Würzburg, Bavaria 97080, Germany
| | - Bowen Ke
- Department of Anesthesiology, West China Hospital, Chengdu 610041, China
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30303, USA
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11
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Aragonès G, Dasuri K, Olukorede O, Francisco SG, Renneburg C, Kumsta C, Hansen M, Kageyama S, Komatsu M, Rowan S, Volkin J, Workman M, Yang W, Daza P, Ruano D, Dominguez‐Martín H, Rodríguez‐Navarro JA, Du X, Brownlee MA, Bejarano E, Taylor A. Autophagic receptor p62 protects against glycation-derived toxicity and enhances viability. Aging Cell 2020; 19:e13257. [PMID: 33146912 PMCID: PMC7681057 DOI: 10.1111/acel.13257] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/24/2020] [Accepted: 09/15/2020] [Indexed: 12/18/2022] Open
Abstract
Diabetes and metabolic syndrome are associated with the typical American high glycemia diet and result in accumulation of high levels of advanced glycation end products (AGEs), particularly upon aging. AGEs form when sugars or their metabolites react with proteins. Associated with a myriad of age-related diseases, AGEs accumulate in many tissues and are cytotoxic. To date, efforts to limit glycation pharmacologically have failed in human trials. Thus, it is crucial to identify systems that remove AGEs, but such research is scanty. Here, we determined if and how AGEs might be cleared by autophagy. Our in vivo mouse and C. elegans models, in which we altered proteolysis or glycative burden, as well as experiments in five types of cells, revealed more than six criteria indicating that p62-dependent autophagy is a conserved pathway that plays a critical role in the removal of AGEs. Activation of autophagic removal of AGEs requires p62, and blocking this pathway results in accumulation of AGEs and compromised viability. Deficiency of p62 accelerates accumulation of AGEs in soluble and insoluble fractions. p62 itself is subject to glycative inactivation and accumulates as high mass species. Accumulation of p62 in retinal pigment epithelium is reversed by switching to a lower glycemia diet. Since diminution of glycative damage is associated with reduced risk for age-related diseases, including age-related macular degeneration, cardiovascular disease, diabetes, Alzheimer's, and Parkinson's, discovery of methods to limit AGEs or enhance p62-dependent autophagy offers novel potential therapeutic targets to treat AGEs-related pathologies.
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Affiliation(s)
- Gemma Aragonès
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Kalavathi Dasuri
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Opeoluwa Olukorede
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Sarah G. Francisco
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Carol Renneburg
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Caroline Kumsta
- Sanford Burnham Prebys Medical Discovery Institute La Jolla CA USA
| | - Malene Hansen
- Sanford Burnham Prebys Medical Discovery Institute La Jolla CA USA
| | - Shun Kageyama
- Department of Physiology Juntendo University School of Medicine Bunkyo Japan
| | - Masaaki Komatsu
- Department of Physiology Juntendo University School of Medicine Bunkyo Japan
| | - Sheldon Rowan
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Jonathan Volkin
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Michael Workman
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Wenxin Yang
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
| | - Paula Daza
- Departamento Biología Celular. Facultad de Biología Universidad de Sevilla Sevilla Spain
| | - Diego Ruano
- Departamento de Bioquímica y Biología Molecular. Facultad de Farmacia Universidad de Sevilla Sevilla Spain
- Instituto de Biomedicina de Sevilla (IBiSHospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla Sevilla Spain
| | - Helena Dominguez‐Martín
- Departamento de Bioquímica y Biología Molecular. Facultad de Farmacia Universidad de Sevilla Sevilla Spain
- Instituto de Biomedicina de Sevilla (IBiSHospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla Sevilla Spain
| | - José Antonio Rodríguez‐Navarro
- Servicio de Neurobiología Departamento de Investigación Hospital Ramón y CajalInstituto Ramón y Cajal de Investigaciones SanitariasCarretera de Colmenar Madrid Spain
| | - Xue‐Liang Du
- Albert Einstein College of Medicine Bronx NY USA
| | | | - Eloy Bejarano
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
- School of Health Sciences Universidad CEU Cardenal Herrera Valencia Spain
| | - Allen Taylor
- Laboratory for Nutrition and Vision Research USDA Human Nutrition Research Center on AgingTufts University Boston MA USA
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12
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SQSTM1/ p62 oligomerization contributes to Aβ-induced inhibition of Nrf2 signaling. Neurobiol Aging 2020; 98:10-20. [PMID: 33227565 DOI: 10.1016/j.neurobiolaging.2020.05.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/13/2020] [Accepted: 05/10/2020] [Indexed: 12/15/2022]
Abstract
SQSTM1/p62, also known as sequestosome 1 (SQSTM1) or p62, is an intracellular protein induced by stress and functions as an adaptor molecule in diverse cellular processes. Oxidative damage induced by overproduction of amyloid-β (Aβ) and the impairment of endogenous antioxidant Nrf2 signaling have been documented in the brains of Alzheimer's disease (AD) patients. The causes of the inactivation of Nrf2 signaling under Aβ-induced oxidative stress are unclear, and p62 might be involved in this process. In this study, APP/PS1 transgenic mice, Aβ intrahippocampal injection rat model, and SH-SY5Y cells were used to reveal that the alterations in the oligomeric state of p62 participated in the regulation of Nrf2 signaling under Aβ insult. The present in vivo and in vitro studies revealed that short-term treatment of Aβ activated Nrf2 signaling, while long-term Aβ treatment inhibited it through either canonical or noncanonical Nrf2 activation pathway. p62 oligomerization was largely attenuated under long-term Aβ treatment. The reduction of p62 oligomerization weakened p62 sequestration to Keap1, leading to Nrf2 signaling inhibition. Our findings provide a better understanding of p62-mediated modulation on Nrf2 activity and highlight a potential therapeutic target of p62 in AD.
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13
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Popova M, Soboleva T, Benninghoff AD, Berreau LM. CO Sense and Release Flavonols: Progress toward the Development of an Analyte Replacement PhotoCORM for Use in Living Cells. ACS OMEGA 2020; 5:10021-10033. [PMID: 32391490 PMCID: PMC7203955 DOI: 10.1021/acsomega.0c00409] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/08/2020] [Indexed: 05/08/2023]
Abstract
Carbon monoxide (CO) is a signaling molecule in humans. Prior research suggests that therapeutic levels of CO can have beneficial effects in treating a variety of physiological and pathological conditions. To facilitate understanding of the role of CO in biology, molecules that enable fluorescence detection of CO in living systems have emerged as an important class of chemical tools. A key unmet challenge in this field is the development of fluorescent analyte replacement probes that replenish the CO that is consumed during detection. Herein, we report the first examples of CO sense and release molecules that involve combining a common CO-sensing motif with a light-triggered CO-releasing flavonol scaffold. A notable advantage of the flavonol-based CO sense and release motif is that it is trackable via fluorescence in both its pre- and postsensing (pre-CO release) forms. In vitro studies revealed that the PdCl2 and Ru(II)-containing CORM-2 used in the CO sensing step can result in metal coordination to the flavonol, which minimizes the subsequent CO release reactivity. However, CO detection followed by CO release is demonstrated in living cells, indicating that a cellular environment mitigates the flavonol/metal interactions.
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Affiliation(s)
- Marina Popova
- Department
of Chemistry & Biochemistry, Utah State
University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Tatiana Soboleva
- Department
of Chemistry & Biochemistry, Utah State
University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| | - Abby D. Benninghoff
- Department
of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, Utah 84322-4815, United States
| | - Lisa M. Berreau
- Department
of Chemistry & Biochemistry, Utah State
University, 0300 Old Main Hill, Logan, Utah 84322-0300, United States
| |
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