1
|
Khailova LS, Kirsanov RS, Rokitskaya TI, Krasnov VS, Korshunova GA, Kotova EA, Antonenko YN. Mitochondrial uncoupling caused by a wide variety of protonophores is differently sensitive to carboxyatractyloside in rat heart and liver mitochondria. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2024; 1865:149506. [PMID: 39168228 DOI: 10.1016/j.bbabio.2024.149506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 08/16/2024] [Accepted: 08/16/2024] [Indexed: 08/23/2024]
Abstract
Mitochondrial uncoupling by small-molecule protonophores is generally accepted to proceed via transmembrane proton shuttling. The idea of facilitating this process by the adenine nucleotide translocase ANT originated primarily from the partial reversal of the DNP-induced mitochondrial uncoupling by the ANT inhibitor carboxyatractyloside (CATR). Recently, the sensitivity to CATR was also observed for the action of such potent OxPhos uncouplers as BAM15, SF6847, FCCP and niclosamide. Here, we report measurements of the CATR effect on the activity of a large number of conventional and novel uncouplers in isolated mammalian mitochondria. Despite the broad variety of chemical structures, CATR attenuated the uncoupling efficacy of all the anionic protonophores in rat heart mitochondria with high abundance of ANT, whereas the effect was much less pronounced or even absent, e.g. for SF6847, in rat liver mitochondria with low ANT content. The fact that the uncoupling action is tissue specific for a broad spectrum of anionic protonophores is highlighted here for the first time. Only with the cationic uncoupler ellipticine and the channel-forming peptide gramicidin A, no sensitivity to CATR was found even in rat heart mitochondria. By contrast, with the recently described ester-stabilized ylidic protonophores [Kirsanov et al. Bioelectrochemistry 2023], the stimulating effect of CATR was discovered both in liver and heart mitochondria.
Collapse
Affiliation(s)
- Ljudmila S Khailova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Roman S Kirsanov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Tatyana I Rokitskaya
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Vladimir S Krasnov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia; Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Galina A Korshunova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Elena A Kotova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia.
| | - Yuri N Antonenko
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia.
| |
Collapse
|
2
|
Cheng MH, Way R, Fresa K, Catandi GD, Carnevale E, Chicco AJ, Chen TW. IMSIS: An instrumented microphysiological system with integrated sensors for monitoring cellular metabolic activities. Biosens Bioelectron 2024; 263:116595. [PMID: 39098284 DOI: 10.1016/j.bios.2024.116595] [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: 05/01/2024] [Revised: 07/02/2024] [Accepted: 07/18/2024] [Indexed: 08/06/2024]
Abstract
Well plates are widely used in biological experiments, particularly in pharmaceutical sciences and cell biology. Its popularity stems from its versatility to support a variety of fluorescent markers for high throughput monitoring of cellular activities. However, using fluorescent markers in traditional well plates has its own challenges, namely, they can be potentially toxic to cells, and thus, may perturb their biological functions; and it is difficult to monitor multiple analytes concurrently and in real-time inside each well. This paper presents a fully instrumented microphysiological system with integrated sensors (IMSIS) with a similar well format. Each well in the microphysiological system has a set of sensors for monitoring multiple metabolic analytes in real-time. The IMSIS platform is supported by integrated bioelectronic circuits and a graphical user interface for easy user configuration and monitoring. The system has integrated microfluidics to maintain its microphysiological environment within each well. The IMSIS platform currently incorporates O2, H2O2, and pH sensors inside each well, allowing up to six wells to perform concurrent measurements in real-time. Furthermore, the architecture is scalable to achieve an even higher level of throughput. The miniaturized design ensures portability, suitable for small offices and field applications. The IMSIS platform was successfully used to monitor in real-time the mitochondrial functions of live bovine embryos in O2 consumption, H2O2 release as an indication of ROS production, and extracellular acidity changes before and after the introduction of external substrates.
Collapse
Affiliation(s)
- Ming-Hao Cheng
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO, USA
| | - Ryan Way
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO, USA
| | - Kyle Fresa
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Giovana D Catandi
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Elaine Carnevale
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Adam J Chicco
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Thomas W Chen
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO, USA; School of Biomedical Engineering, Colorado State University, Fort Collins, CO, USA.
| |
Collapse
|
3
|
Zhou M, Li C, Byrne FL, Vancuylenburg CS, Olzomer EM, Hargreaves A, Wu LE, Shackel NA, Santos WL, Hoehn KL. Beneficial effects of MGL-3196 and BAM15 combination in a mouse model of fatty liver disease. Acta Physiol (Oxf) 2024; 240:e14217. [PMID: 39152636 PMCID: PMC11421973 DOI: 10.1111/apha.14217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 07/24/2024] [Accepted: 08/04/2024] [Indexed: 08/19/2024]
Abstract
BACKGROUND AND AIM Metabolic dysfunction-associated steatohepatitis (MASH) is a metabolic disorder with limited treatment options. The thyroid hormone receptor (THR)-β agonist resmetirom/MGL-3196 (MGL) increases liver fat oxidation and has been approved for treating adult MASH. However, over 60% of patients receiving MGL treatment do not achieve MASH resolution. Therefore, we investigated the potential for combination therapy of MGL with the mitochondrial uncoupler BAM15 to improve fatty liver disease outcomes in the GAN mouse model of MASH. METHODS C57BL/6J male mice were fed GAN diet for 38 weeks before stratification and randomization to treatments including MGL, BAM15, MGL + BAM15, or no drug control for 8 weeks. Treatments were admixed in diet and mice were pair-fed to control for drug intake. Treatment effectiveness was assessed by body weight, body composition, energy expenditure, glucose tolerance, tissue lipid content, and histological analyses. RESULTS MGL + BAM15 treatment resulted in better efficacy versus GAN control mice than either monotherapy in the context of energy expenditure, liver fat loss, glucose control, and fatty liver disease activity score. Improvements in ALT, liver mass, and plasma cholesterol were primarily driven by MGL, while improvements in body fat were primarily driven by BAM15. No treatments altered liver fibrosis. CONCLUSIONS MGL + BAM15 treatment had overall better efficacy to improve metabolic outcomes in mice fed GAN diet than either monotherapy alone. These data warrant further investigation into combination therapies of THR-β agonists and mitochondrial uncouplers for the potential treatment of disorders related to fatty liver, obesity, and insulin resistance.
Collapse
Affiliation(s)
- Mingyan Zhou
- School of Biotechnology & Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, NSW 2052, Australia
| | - Catherine Li
- School of Biotechnology & Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, NSW 2052, Australia
| | - Frances L. Byrne
- School of Biotechnology & Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, NSW 2052, Australia
| | - Calum S. Vancuylenburg
- School of Biotechnology & Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, NSW 2052, Australia
| | - Ellen M. Olzomer
- School of Biotechnology & Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, NSW 2052, Australia
| | - Adam Hargreaves
- PathCelerate Ltd, Goostrey, Crewe, Chesire CW4 8PW, United Kingdom
| | - Lindsay E. Wu
- School of Biomedical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Nicholas A. Shackel
- Northern Tasmania, Launceston General Hospital, Tasmania health Service, TAS 7250, Australia
| | - Webster L. Santos
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Polytechnic Institute and State University, Virginia 2061, United States
| | - Kyle L. Hoehn
- School of Biotechnology & Biomolecular Sciences, Faculty of Science, University of New South Wales, Sydney, NSW 2052, Australia
| |
Collapse
|
4
|
Komza M, Chipuk JE. Mitochondrial metabolism: A moving target in hepatocellular carcinoma therapy. J Cell Physiol 2024:e31441. [PMID: 39324415 DOI: 10.1002/jcp.31441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 08/21/2024] [Accepted: 09/10/2024] [Indexed: 09/27/2024]
Abstract
Mitochondria are pivotal contributors to cancer mechanisms due to their homeostatic and pathological roles in cellular bioenergetics, biosynthesis, metabolism, signaling, and survival. During transformation and tumor initiation, mitochondrial function is often disrupted by oncogenic mutations, leading to a metabolic profile distinct from precursor cells. In this review, we focus on hepatocellular carcinoma, a cancer arising from metabolically robust and nutrient rich hepatocytes, and discuss the mechanistic impact of altered metabolism in this setting. We provide distinctions between normal mitochondrial activity versus disease-related function which yielded therapeutic opportunities, along with highlighting recent preclinical and clinical efforts focused on targeting mitochondrial metabolism. Finally, several novel strategies for exploiting mitochondrial programs to eliminate hepatocellular carcinoma cells in metabolism-specific contexts are presented to integrate these concepts and gain foresight into the future of mitochondria-focused therapeutics.
Collapse
Affiliation(s)
- Monika Komza
- Louis V. Gerstner, Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Jerry Edward Chipuk
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Department of Dermatology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Icahn School of Medicine at Mount Sinai, The Tisch Cancer Institute, New York, New York, USA
- The Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Icahn School of Medicine at Mount Sinai, The Diabetes, Obesity, and Metabolism Institute, New York, New York, USA
| |
Collapse
|
5
|
Crivelli SM, Gaifullina A, Chatton JY. Exploring the role of mitochondrial uncoupling protein 4 in brain metabolism: implications for Alzheimer's disease. Front Neurosci 2024; 18:1483708. [PMID: 39381683 PMCID: PMC11459774 DOI: 10.3389/fnins.2024.1483708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2024] [Accepted: 09/06/2024] [Indexed: 10/10/2024] Open
Abstract
The brain's high demand for energy necessitates tightly regulated metabolic pathways to sustain physiological activity. Glucose, the primary energy substrate, undergoes complex metabolic transformations, with mitochondria playing a central role in ATP production via oxidative phosphorylation. Dysregulation of this metabolic interplay is implicated in Alzheimer's disease (AD), where compromised glucose metabolism, oxidative stress, and mitochondrial dysfunction contribute to disease progression. This review explores the intricate bioenergetic crosstalk between astrocytes and neurons, highlighting the function of mitochondrial uncoupling proteins (UCPs), particularly UCP4, as important regulators of brain metabolism and neuronal function. Predominantly expressed in the brain, UCP4 reduces the membrane potential in the inner mitochondrial membrane, thereby potentially decreasing the generation of reactive oxygen species. Furthermore, UCP4 mitigates mitochondrial calcium overload and sustains cellular ATP levels through a metabolic shift from mitochondrial respiration to glycolysis. Interestingly, the levels of the neuronal UCPs, UCP2, 4 and 5 are significantly reduced in AD brain tissue and a specific UCP4 variant has been associated to an increased risk of developing AD. Few studies modulating the expression of UCP4 in astrocytes or neurons have highlighted protective effects against neurodegeneration and aging, suggesting that pharmacological strategies aimed at activating UCPs, such as protonophoric uncouplers, hold promise for therapeutic interventions in AD and other neurodegenerative diseases. Despite significant advances, our understanding of UCPs in brain metabolism remains in its early stages, emphasizing the need for further research to unravel their biological functions in the brain and their therapeutic potential.
Collapse
Affiliation(s)
| | | | - Jean-Yves Chatton
- Department of Fundamental Neurosciences, University of Lausanne, Lausanne, Switzerland
| |
Collapse
|
6
|
Hu Y, Zhang Y, Guo J, Chen S, Jin J, Li P, Pan Y, Lei S, Li J, Wu S, Bu B, Fu L. Synthesis and anti-proliferative effect of novel 4-Aryl-1, 3-Thiazole-TPP conjugates via mitochondrial uncoupling process. Bioorg Chem 2024; 150:107588. [PMID: 38936051 DOI: 10.1016/j.bioorg.2024.107588] [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: 05/11/2024] [Revised: 06/18/2024] [Accepted: 06/22/2024] [Indexed: 06/29/2024]
Abstract
With the advent of mitochondrial targeting moiety such as triphenlyphosphonium cation (TPP+), targeting mitochondria in cancer cells has become a promising strategy for combating tumors. Herein, a series of novel 4-aryl-1,3-thiazole derivatives linked to TPP+ moiety were designed and synthesized. The cytotoxicity against a panel of four cancer cell lines was evaluated by CCK-8 assay. Most of these compounds exhibited moderate to good inhibitory activity over HeLa, PC-3 and HCT-15 cells while MCF-7 cells were less sensitive to most compounds. Among them, compound 12a exhibited a significant anti-proliferative activity against HeLa cells, and prompted for further investigation. Specifically, 12a decreased mitochondrial membrane potential and enhanced levels of reactive oxygen species (ROS). The flow cytometry analysis revealed that compound 12a could induce apoptosis and cell cycle arrest at G0/G1 phase in HeLa cells. In addition, mitochondrial bioenergetics assay revealed that 12a displayed mild mitochondrial uncoupling effect. Taken together, these findings suggest the therapeutic potential of compound 12a as an antitumor agent targeting mitochondria.
Collapse
Affiliation(s)
- Yixin Hu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Yang Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Guo
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Shihao Chen
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Jie Jin
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Pengyu Li
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Yuchen Pan
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Shuwen Lei
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Jiaqi Li
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Suheng Wu
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Buzhou Bu
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Lei Fu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China; Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, China.
| |
Collapse
|
7
|
Barnett D, Zimmer TS, Booraem C, Palaguachi F, Meadows SM, Xiao H, Chouchani ET, Orr AG, Orr AL. Mitochondrial complex III-derived ROS amplify immunometabolic changes in astrocytes and promote dementia pathology. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.19.608708. [PMID: 39229090 PMCID: PMC11370371 DOI: 10.1101/2024.08.19.608708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Neurodegenerative disorders alter mitochondrial functions, including the production of reactive oxygen species (ROS). Mitochondrial complex III (CIII) generates ROS implicated in redox signaling, but its triggers, targets, and disease relevance are not clear. Using site-selective suppressors and genetic manipulations together with mitochondrial ROS imaging and multiomic profiling, we found that CIII is the dominant source of ROS production in astrocytes exposed to neuropathology-related stimuli. Astrocytic CIII-ROS production was dependent on nuclear factor-κB (NF-κB) and the mitochondrial sodium-calcium exchanger (NCLX) and caused oxidation of select cysteines within immune and metabolism-associated proteins linked to neurological disease. CIII-ROS amplified metabolomic and pathology-associated transcriptional changes in astrocytes, with STAT3 activity as a major mediator, and facilitated neuronal toxicity in a non-cell-autonomous manner. As proof-of-concept, suppression of CIII-ROS in mice decreased dementia-linked tauopathy and neuroimmune cascades and extended lifespan. Our findings establish CIII-ROS as an important immunometabolic signal transducer and tractable therapeutic target in neurodegenerative disease.
Collapse
Affiliation(s)
- Daniel Barnett
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Till S Zimmer
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
| | - Caroline Booraem
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Fernando Palaguachi
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
| | - Samantha M Meadows
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Haopeng Xiao
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Edward T Chouchani
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA
- Department of Cell Biology, Harvard Medical School, Boston, MA
| | - Anna G Orr
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| | - Adam L Orr
- Helen and Robert Appel Alzheimer's Disease Research Institute, Weill Cornell Medicine, New York, NY
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY
- Neuroscience Graduate Program, Weill Cornell Medicine, New York, NY
| |
Collapse
|
8
|
Hefzi H, Martínez-Monge I, Marin de Mas I, Cowie NL, Toledo AG, Noh SM, Karottki KJLC, Decker M, Arnsdorf J, Camacho-Zaragoza JM, Kol S, Schoffelen S, Pristovšek N, Hansen AH, Miguez AA, Bjorn SP, Brøndum KK, Javidi EM, Jensen KL, Stangl L, Kreidl E, Kallehauge TB, Ley D, Ménard P, Petersen HM, Sukhova Z, Bauer A, Casanova E, Barron N, Malmström J, Nielsen LK, Lee GM, Kildegaard HF, Voldborg BG, Lewis NE. Multiplex genome editing eliminates the Warburg Effect without impacting growth rate in mammalian cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.02.606284. [PMID: 39211256 PMCID: PMC11361052 DOI: 10.1101/2024.08.02.606284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
The Warburg effect is ubiquitous in proliferative mammalian cells, including cancer cells, but poses challenges for biopharmaceutical production, as lactate accumulation inhibits cell growth and protein production. Previous efforts to eliminate lactate production via knockout have failed in mammalian bioprocessing since lactate dehydrogenase has proven essential. However, here we eliminated the Warburg effect in Chinese hamster ovary (CHO) and HEK293 cells by simultaneously knocking out lactate dehydrogenase and regulators involved in a negative feedback loop that typically inhibits pyruvate conversion to acetyl-CoA. In contrast to long-standing assumptions about the role of aerobic glycolysis, Warburg-null cells maintain wildtype growth rate while producing negligible lactate. Further characterization of Warburg-null CHO cells showed a compensatory increase in oxygen consumption, a near total reliance on oxidative metabolism, and higher cell densities in fed-batch cell culture. These cells remained amenable for production of diverse biotherapeutic proteins, reaching industrially relevant titers and maintaining product glycosylation. Thus, the ability to eliminate the Warburg effect is an important development for biotherapeutic production and provides a tool for investigating a near-universal metabolic phenomenon.
Collapse
|
9
|
Komatsu W, Kishi H, Uchiyama K, Ohhira S, Kobashi G. Urolithin A suppresses NLRP3 inflammasome activation by inhibiting the generation of reactive oxygen species and prevents monosodium urate crystal-induced peritonitis. Biosci Biotechnol Biochem 2024; 88:966-978. [PMID: 38772744 DOI: 10.1093/bbb/zbae068] [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: 04/02/2024] [Accepted: 05/09/2024] [Indexed: 05/23/2024]
Abstract
The NOD-like receptor family pyrin domain-containing protein 3 (NLRP3) inflammasome triggers the maturation of interleukin-1β (IL-1β) and is implicated in the pathogenesis of various inflammatory diseases. Urolithin A, a gut microbial metabolite of ellagic acid, reportedly exerts antiinflammatory effects in vitro and in vivo. However, whether urolithin A suppresses NLRP3 inflammasome activation is unclear. In this study, urolithin A inhibited the cleavage of NLRP3 inflammasome agonist-induced caspase-1, maturation of IL-1β, and activation of pyroptosis in lipopolysaccharide-primed mouse bone marrow-derived macrophages. Urolithin A reduced generation of intracellular and mitochondrial reactive oxygen species (ROS) and restricted the interaction between thioredoxin-interacting protein and NLRP3, which attenuated NLRP3 inflammasome activation. Urolithin A administration prevented monosodium urate-induced peritonitis in mice. Collectively, these findings indicate that urolithin A suppresses NLRP3 inflammasome activation, at least partially, by repressing the generation of intracellular and mitochondrial ROS.
Collapse
Affiliation(s)
- Wataru Komatsu
- Department of Public Health, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Hisashi Kishi
- Department of Public Health, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Koji Uchiyama
- Department of Public Health, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Shuji Ohhira
- Department of Public Health, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Gen Kobashi
- Department of Public Health, Dokkyo Medical University School of Medicine, Tochigi, Japan
| |
Collapse
|
10
|
Ng MY, Song ZJ, Tan CH, Bassetto M, Hagen T. Structural investigations on the mitochondrial uncouplers niclosamide and FCCP. FEBS Open Bio 2024; 14:1057-1071. [PMID: 38750619 PMCID: PMC11216929 DOI: 10.1002/2211-5463.13817] [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: 06/15/2023] [Revised: 02/26/2024] [Accepted: 05/02/2024] [Indexed: 07/03/2024] Open
Abstract
There has been renewed interest in using mitochondrial uncoupler compounds such as niclosamide and carbonyl cyanide p-(trifluoromethoxy)phenylhydrazone (FCCP) for the treatment of obesity, hepatosteatosis and diseases where oxidative stress plays a role. However, both FCCP and niclosamide have undesirable effects that are not due to mitochondrial uncoupling, such as inhibition of mitochondrial oxygen consumption by FCCP and induction of DNA damage by niclosamide. Through structure-activity analysis, we identified FCCP analogues that do not inhibit mitochondrial oxygen consumption but still provided good, although less potent, uncoupling activity. We also characterized the functional role of the niclosamide 4'-nitro group, the phenolic hydroxy group and the anilide amino group in mediating uncoupling activity. Our structural investigations provide important information that will aid further drug development.
Collapse
Affiliation(s)
- Mei Ying Ng
- Department of Biochemistry, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
- Present address:
Department of Cancer BiologyDana‐Farber Cancer InstituteBostonMAUSA
| | - Zhi Jian Song
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore
| | - Choon Hong Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore
| | - Marcella Bassetto
- School of Pharmacy and Pharmaceutical Sciences, College of Biomedical and Life SciencesCardiff UniversityUK
| | - Thilo Hagen
- Department of Biochemistry, Yong Loo Lin School of MedicineNational University of SingaporeSingapore
| |
Collapse
|
11
|
Harders AR, Watermann P, Karger G, Denieffe SC, Weller A, Dannemann AC, Willker JE, Köhler Y, Arend C, Dringen R. Consequences of a 2-Deoxyglucose Exposure on the ATP Content and the Cytosolic Glucose Metabolism of Cultured Primary Rat Astrocytes. Neurochem Res 2024:10.1007/s11064-024-04192-y. [PMID: 38898248 DOI: 10.1007/s11064-024-04192-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/04/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024]
Abstract
The glucose analogue 2-deoxyglucose (2DG) has frequently been used as a tool to study cellular glucose uptake and to inhibit glycolysis. Exposure of primary cultured astrocytes to 2DG caused a time- and concentration-dependent cellular accumulation of 2-deoxyglucose-6-phosphate (2DG6P) that was accompanied by a rapid initial decline in cellular ATP content. Inhibitors of mitochondrial respiration as well as inhibitors of mitochondrial uptake of pyruvate and activated fatty acids accelerated the ATP loss, demonstrating that mitochondrial ATP regeneration contributes to the partial maintenance of the ATP content in 2DG-treated astrocytes. After a 30 min exposure to 10 mM 2DG the specific content of cellular 2DG6P had accumulated to around 150 nmol/mg, while cellular ATP was lowered by 50% to around 16 nmol/mg. Following such a 2DG6P-loading of astrocytes, glycolytic lactate production from applied glucose was severely impaired during the initial 60 min of incubation, but was reestablished during longer incubation concomitant with a loss in cellular 2DG6P content. In contrast to glycolysis, the glucose-dependent NADPH regeneration via the pentose phosphate pathway (PPP) was only weakly affected in 2DG6P-loaded astrocytes and in cells that were coincubated with glucose in the presence of an excess of 2DG. Additionally, in the presence of 2DG PPP-dependent WST1 reduction was found to have doubled compared to hexose-free control incubations, indicating that cellular 2DG6P can serve as substrate for NADPH regeneration by the astrocytic PPP. The data presented provide new insights on the metabolic consequences of a 2DG exposure on the energy and glucose metabolism of astrocytes and demonstrate the reversibility of the inhibitory potential of a 2DG-treatment on the glucose metabolism of cultured astrocytes.
Collapse
Affiliation(s)
- Antonia Regina Harders
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
- Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany
| | - Patrick Watermann
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
- Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany
| | - Gabriele Karger
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
- Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany
| | - Sadhbh Cynth Denieffe
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
| | - Alina Weller
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
| | - Annika Carina Dannemann
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
| | - Johanna Elisabeth Willker
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
| | - Yvonne Köhler
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
- Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany
| | - Christian Arend
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
- Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany
| | - Ralf Dringen
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany.
- Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany.
| |
Collapse
|
12
|
Morcillo P, Kabra K, Velasco K, Cordero H, Jennings S, Yun TD, Larrea D, Akman HO, Schon EA. Aberrant ER-mitochondria communication is a common pathomechanism in mitochondrial disease. Cell Death Dis 2024; 15:405. [PMID: 38858390 PMCID: PMC11164949 DOI: 10.1038/s41419-024-06781-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 05/22/2024] [Accepted: 05/28/2024] [Indexed: 06/12/2024]
Abstract
Genetic mutations causing primary mitochondrial disease (i.e those compromising oxidative phosphorylation [OxPhos]) resulting in reduced bioenergetic output display great variability in their clinical features, but the reason for this is unknown. We hypothesized that disruption of the communication between endoplasmic reticulum (ER) and mitochondria at mitochondria-associated ER membranes (MAM) might play a role in this variability. To test this, we assayed MAM function and ER-mitochondrial communication in OxPhos-deficient cells, including cybrids from patients with selected pathogenic mtDNA mutations. Our results show that each of the various mutations studied indeed altered MAM functions, but notably, each disorder presented with a different MAM "signature". We also found that mitochondrial membrane potential is a key driver of ER-mitochondrial connectivity. Moreover, our findings demonstrate that disruption in ER-mitochondrial communication has consequences for cell survivability that go well beyond that of reduced ATP output. The findings of a "MAM-OxPhos" axis, the role of mitochondrial membrane potential in controlling this process, and the contribution of MAM dysfunction to cell death, reveal a new relationship between mitochondria and the rest of the cell, as well as providing new insights into the diagnosis and treatment of these devastating disorders.
Collapse
Affiliation(s)
- Patricia Morcillo
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA.
| | - Khushbu Kabra
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Kevin Velasco
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Hector Cordero
- Columbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA
- Immunology Group, Department of Physiology, Faculty of Veterinary, University of Extremadura, Caceres, 10003, Spain
| | - Sarah Jennings
- Stony Brook University, Stony Brook, New York, NY, 11794, USA
| | - Taekyung D Yun
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Delfina Larrea
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - H Orhan Akman
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA
| | - Eric A Schon
- Department of Neurology, Columbia University Medical Center, New York, NY, 10032, USA.
- Department of Genetics and Development, Columbia University Medical Center, New York, NY, 10032, USA.
| |
Collapse
|
13
|
Shao H, Zhang H, Jia D. The Role of Exerkines in Obesity-Induced Disruption of Mitochondrial Homeostasis in Thermogenic Fat. Metabolites 2024; 14:287. [PMID: 38786764 PMCID: PMC11122964 DOI: 10.3390/metabo14050287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
There is a notable correlation between mitochondrial homeostasis and metabolic disruption. In this review, we report that obesity-induced disruption of mitochondrial homeostasis adversely affects lipid metabolism, adipocyte differentiation, oxidative capacity, inflammation, insulin sensitivity, and thermogenesis in thermogenic fat. Elevating mitochondrial homeostasis in thermogenic fat emerges as a promising avenue for developing treatments for metabolic diseases, including enhanced mitochondrial function, mitophagy, mitochondrial uncoupling, and mitochondrial biogenesis. The exerkines (e.g., myokines, adipokines, batokines) released during exercise have the potential to ameliorate mitochondrial homeostasis, improve glucose and lipid metabolism, and stimulate fat browning and thermogenesis as a defense against obesity-associated metabolic diseases. This comprehensive review focuses on the manifold benefits of exercise-induced exerkines, particularly emphasizing their influence on mitochondrial homeostasis and fat thermogenesis in the context of metabolic disorders associated with obesity.
Collapse
Affiliation(s)
- Hui Shao
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China; (H.S.); (H.Z.)
- Graduate School of Harbin Sport University, Harbin Sport University, Harbin 150006, China
| | - Huijie Zhang
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China; (H.S.); (H.Z.)
| | - Dandan Jia
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China; (H.S.); (H.Z.)
| |
Collapse
|
14
|
Krakowczyk M, Lenkiewicz AM, Sitarz T, Malinska D, Borrero M, Mussulini BHM, Linke V, Szczepankiewicz AA, Biazik JM, Wydrych A, Nieznanska H, Serwa RA, Chacinska A, Bragoszewski P. OMA1 protease eliminates arrested protein import intermediates upon mitochondrial depolarization. J Cell Biol 2024; 223:e202306051. [PMID: 38530280 PMCID: PMC10964989 DOI: 10.1083/jcb.202306051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 12/28/2023] [Accepted: 02/16/2024] [Indexed: 03/27/2024] Open
Abstract
Most mitochondrial proteins originate from the cytosol and require transport into the organelle. Such precursor proteins must be unfolded to pass through translocation channels in mitochondrial membranes. Misfolding of transported proteins can result in their arrest and translocation failure. Arrested proteins block further import, disturbing mitochondrial functions and cellular proteostasis. Cellular responses to translocation failure have been defined in yeast. We developed the cell line-based translocase clogging model to discover molecular mechanisms that resolve failed import events in humans. The mechanism we uncover differs significantly from these described in fungi, where ATPase-driven extraction of blocked protein is directly coupled with proteasomal processing. We found human cells to rely primarily on mitochondrial factors to clear translocation channel blockage. The mitochondrial membrane depolarization triggered proteolytic cleavage of the stalled protein, which involved mitochondrial protease OMA1. The cleavage allowed releasing the protein fragment that blocked the translocase. The released fragment was further cleared in the cytosol by VCP/p97 and the proteasome.
Collapse
Affiliation(s)
- Magda Krakowczyk
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Anna M. Lenkiewicz
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Tomasz Sitarz
- Centre of New Technologies, University of Warsaw, Warsaw, Poland
| | - Dominika Malinska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Mayra Borrero
- IMol Polish Academy of Sciences, Warsaw, Poland
- ReMedy International Research Agenda Unit, IMol Polish Academy of Sciences, Warsaw, Poland
| | - Ben Hur Marins Mussulini
- IMol Polish Academy of Sciences, Warsaw, Poland
- ReMedy International Research Agenda Unit, IMol Polish Academy of Sciences, Warsaw, Poland
| | - Vanessa Linke
- IMol Polish Academy of Sciences, Warsaw, Poland
- ReMedy International Research Agenda Unit, IMol Polish Academy of Sciences, Warsaw, Poland
| | | | - Joanna M. Biazik
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
- University of New South Wales, Sydney, Australia
| | - Agata Wydrych
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Hanna Nieznanska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Remigiusz A. Serwa
- IMol Polish Academy of Sciences, Warsaw, Poland
- ReMedy International Research Agenda Unit, IMol Polish Academy of Sciences, Warsaw, Poland
| | - Agnieszka Chacinska
- IMol Polish Academy of Sciences, Warsaw, Poland
- ReMedy International Research Agenda Unit, IMol Polish Academy of Sciences, Warsaw, Poland
| | - Piotr Bragoszewski
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
- Centre of New Technologies, University of Warsaw, Warsaw, Poland
| |
Collapse
|
15
|
Denker N, Dringen R. Modulation of Pyruvate Export and Extracellular Pyruvate Concentration in Primary Astrocyte Cultures. Neurochem Res 2024; 49:1331-1346. [PMID: 38376749 PMCID: PMC10991036 DOI: 10.1007/s11064-024-04120-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/21/2024]
Abstract
Astrocyte-derived pyruvate is considered to have neuroprotective functions. In order to investigate the processes that are involved in astrocytic pyruvate release, we used primary rat astrocyte cultures as model system. Depending on the incubation conditions and medium composition, astrocyte cultures established extracellular steady state pyruvate concentrations in the range between 150 µM and 300 µM. During incubations for up to 2 weeks in DMEM culture medium, the extracellular pyruvate concentration remained almost constant for days, while the extracellular lactate concentration increased continuously during the incubation into the millimolar concentration range as long as glucose was present. In an amino acid-free incubation buffer, glucose-fed astrocytes released pyruvate with an initial rate of around 60 nmol/(h × mg) and after around 5 h an almost constant extracellular pyruvate concentration was established that was maintained for several hours. Extracellular pyruvate accumulation was also observed, if glucose had been replaced by mannose, fructose, lactate or alanine. Glucose-fed astrocyte cultures established similar extracellular steady state concentrations of pyruvate by releasing pyruvate into pyruvate-free media or by consuming excess of extracellular pyruvate. Inhibition of the monocarboxylate transporter MCT1 by AR-C155858 lowered extracellular pyruvate accumulation, while inhibition of mitochondrial pyruvate uptake by UK5099 increased the extracellular pyruvate concentration. Finally, the presence of the uncoupler BAM15 or of the respiratory chain inhibitor antimycin A almost completely abolished extracellular pyruvate accumulation. The data presented demonstrate that cultured astrocytes establish a transient extracellular steady state concentration of pyruvate which is strongly affected by modulation of the mitochondrial pyruvate metabolism.
Collapse
Affiliation(s)
- Nadine Denker
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry) and Centre for Environmental Research and Sustainable Technologies, University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
| | - Ralf Dringen
- Centre for Biomolecular Interactions Bremen, Faculty 2 (Biology/Chemistry) and Centre for Environmental Research and Sustainable Technologies, University of Bremen, P.O. Box 330440, 28334, Bremen, Germany.
| |
Collapse
|
16
|
Taylor AL, Dubuisson O, Pandey P, Zunica ERM, Vandanmagsar B, Dantas WS, Johnson A, Axelrod CL, Kirwan JP. Restricting bioenergetic efficiency enhances longevity and mitochondrial redox capacity in Drosophila melanogaster. Aging Cell 2024; 23:e14107. [PMID: 38343281 PMCID: PMC11113268 DOI: 10.1111/acel.14107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 05/24/2024] Open
Abstract
Mitochondria are essential for survival and as such, impairments in organelle homeostasis significantly accelerate age-related morbidity and mortality. Here, we determined the contribution of bioenergetic efficiency to life span and health span in Drosophila melanogaster utilizing the mitochondrial uncoupler BAM15. Life span was determined in flies fed a normal diet (ND) or high fat diet (HFD) supplemented with vehicle or BAM15. Locomotor function was determined by negative geotaxis assay in middle-aged flies fed vehicle or BAM15 under ND or HFD conditions. Redox capacity (high-resolution respirometry/fluorometry), citrate synthase (enzyme activity), mtDNA content (qPCR), gene expression (qPCR), and protein expression (western blot) were assessed in flight muscle homogenates of middle-aged flies fed vehicle or BAM15 ND. The molar ratio of H2O2 and O2 (H2O2:O2) in a defined respiratory state was calculated as a measure of redox balance. BAM15 extended life span by 9% on ND and 25% on HFD and improved locomotor activity by 125% on ND and 53% on HFD. Additionally, BAM15 enhanced oxidative phosphorylation capacity supported by pyruvate + malate, proline, and glycerol 3-phosphate. Concurrently, BAM15 enhanced the mitochondrial H2O2 production rate, reverse electron flow from mitochondrial glycerol-3-phosphate dehydrogenase (mGPDH) to Complex I, mGPDH, and Complex I without altering the H2O2:O2 ratio. BAM15 upregulated transcriptional signatures associated with mitochondrial function and fitness as well as antioxidant defense. BAM15-mediated restriction of bioenergetic efficiency prolongs life span and health span in Drosophila fed a ND or HFD. Improvements in life span and health span in ND were supported by synergistic enhancement of muscular redox capacity.
Collapse
Affiliation(s)
- Analisa L. Taylor
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Olga Dubuisson
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Pritika Pandey
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Elizabeth R. M. Zunica
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Bolormaa Vandanmagsar
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Wagner S. Dantas
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - Alyssa Johnson
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Christopher L. Axelrod
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| | - John P. Kirwan
- Integrated Physiology and Molecular Medicine LaboratoryPennington Biomedical Research CenterBaton RougeLouisianaUSA
| |
Collapse
|
17
|
Salloum Z, Dauner K, Li YF, Verma N, Valdivieso-González D, Almendro-Vedia V, Zhang JD, Nakka K, Chen MX, McDonald J, Corley CD, Sorisky A, Song BL, López-Montero I, Luo J, Dilworth JF, Zha X. Statin-mediated reduction in mitochondrial cholesterol primes an anti-inflammatory response in macrophages by upregulating Jmjd3. eLife 2024; 13:e85964. [PMID: 38602170 PMCID: PMC11186637 DOI: 10.7554/elife.85964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/13/2024] [Indexed: 04/12/2024] Open
Abstract
Statins are known to be anti-inflammatory, but the mechanism remains poorly understood. Here, we show that macrophages, either treated with statin in vitro or from statin-treated mice, have reduced cholesterol levels and higher expression of Jmjd3, a H3K27me3 demethylase. We provide evidence that lowering cholesterol levels in macrophages suppresses the adenosine triphosphate (ATP) synthase in the inner mitochondrial membrane and changes the proton gradient in the mitochondria. This activates nuclear factor kappa-B (NF-κB) and Jmjd3 expression, which removes the repressive marker H3K27me3. Accordingly, the epigenome is altered by the cholesterol reduction. When subsequently challenged by the inflammatory stimulus lipopolysaccharide (M1), macrophages, either treated with statins in vitro or isolated from statin-fed mice, express lower levels proinflammatory cytokines than controls, while augmenting anti-inflammatory Il10 expression. On the other hand, when macrophages are alternatively activated by IL-4 (M2), statins promote the expression of Arg1, Ym1, and Mrc1. The enhanced expression is correlated with the statin-induced removal of H3K27me3 from these genes prior to activation. In addition, Jmjd3 and its demethylase activity are necessary for cholesterol to modulate both M1 and M2 activation. We conclude that upregulation of Jmjd3 is a key event for the anti-inflammatory function of statins on macrophages.
Collapse
Affiliation(s)
- Zeina Salloum
- Chronic Disease Program, Ottawa Hospital Research InstituteOttawaCanada
| | - Kristin Dauner
- Chronic Disease Program, Ottawa Hospital Research InstituteOttawaCanada
| | - Yun-feng Li
- College of Life Sciences, Wuhan UniversityWuhanChina
| | - Neha Verma
- Chronic Disease Program, Ottawa Hospital Research InstituteOttawaCanada
| | - David Valdivieso-González
- Departamento Química Física, Universidad Complutense de Madrid, AvdaMadridSpain
- Instituto de Investigación Biomédica Hospital Doce de Octubre (imas12)MadridSpain
| | - Víctor Almendro-Vedia
- Departamento Química Física, Universidad Complutense de Madrid, AvdaMadridSpain
- Instituto de Investigación Biomédica Hospital Doce de Octubre (imas12)MadridSpain
| | - John D Zhang
- Chronic Disease Program, Ottawa Hospital Research InstituteOttawaCanada
| | - Kiran Nakka
- Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research InstituteOttawaCanada
| | - Mei Xi Chen
- Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research InstituteOttawaCanada
- Department of Cell and Regenerative Biology, University of WisconsinMadisonUnited States
| | - Jeffrey McDonald
- Department of Molecular Genetics, The University of Texas Southwestern Medical CenterDallasUnited States
| | - Chase D Corley
- Department of Molecular Genetics, The University of Texas Southwestern Medical CenterDallasUnited States
| | - Alexander Sorisky
- Chronic Disease Program, Ottawa Hospital Research InstituteOttawaCanada
- Department of Cellular and Molecular Medicine, University of OttawaOttawaCanada
| | | | - Iván López-Montero
- Departamento Química Física, Universidad Complutense de Madrid, AvdaMadridSpain
- Instituto de Investigación Biomédica Hospital Doce de Octubre (imas12)MadridSpain
| | - Jie Luo
- College of Life Sciences, Wuhan UniversityWuhanChina
| | - Jeffrey F Dilworth
- Sprott Center for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research InstituteOttawaCanada
- Department of Cell and Regenerative Biology, University of WisconsinMadisonUnited States
- Department of Cellular and Molecular Medicine, University of OttawaOttawaCanada
| | - Xiaohui Zha
- Chronic Disease Program, Ottawa Hospital Research InstituteOttawaCanada
- Departments of Medicine and of Biochemistry, Microbiology & Immunology, University of OttawaOttawaCanada
| |
Collapse
|
18
|
Vlasova AD, Bukhalovich SM, Bagaeva DF, Polyakova AP, Ilyinsky NS, Nesterov SV, Tsybrov FM, Bogorodskiy AO, Zinovev EV, Mikhailov AE, Vlasov AV, Kuklin AI, Borshchevskiy VI, Bamberg E, Uversky VN, Gordeliy VI. Intracellular microbial rhodopsin-based optogenetics to control metabolism and cell signaling. Chem Soc Rev 2024; 53:3327-3349. [PMID: 38391026 DOI: 10.1039/d3cs00699a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Microbial rhodopsin (MRs) ion channels and pumps have become invaluable optogenetic tools for neuroscience as well as biomedical applications. Recently, MR-optogenetics expanded towards subcellular organelles opening principally new opportunities in optogenetic control of intracellular metabolism and signaling via precise manipulations of organelle ion gradients using light. This new optogenetic field expands the opportunities for basic and medical studies of cancer, cardiovascular, and metabolic disorders, providing more detailed and accurate control of cell physiology. This review summarizes recent advances in studies of the cellular metabolic processes and signaling mediated by optogenetic tools targeting mitochondria, endoplasmic reticulum (ER), lysosomes, and synaptic vesicles. Finally, we discuss perspectives of such an optogenetic approach in both fundamental and applied research.
Collapse
Affiliation(s)
- Anastasiia D Vlasova
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Siarhei M Bukhalovich
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Diana F Bagaeva
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Aleksandra P Polyakova
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Nikolay S Ilyinsky
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Semen V Nesterov
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Fedor M Tsybrov
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Andrey O Bogorodskiy
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Egor V Zinovev
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Anatolii E Mikhailov
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Alexey V Vlasov
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russia
| | - Alexander I Kuklin
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russia
| | - Valentin I Borshchevskiy
- Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Russia
| | - Ernst Bamberg
- Max Planck Institute of Biophysics, Frankfurt am Main, Germany
| | - Vladimir N Uversky
- Department of Molecular Medicine and Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.
| | - Valentin I Gordeliy
- Institut de Biologie Structurale Jean-Pierre Ebel, Université Grenoble Alpes-Commissariat à l'Energie Atomique et aux Energies Alternatives-CNRS, 38027 Grenoble, France.
| |
Collapse
|
19
|
Zheng LY, Da YX, Luo X, Zhang X, Sun ZJ, Dong DL. Sorafenib extends the lifespan of C. elegans through mitochondrial uncoupling mechanism. Free Radic Biol Med 2024; 214:101-113. [PMID: 38360276 DOI: 10.1016/j.freeradbiomed.2024.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 02/17/2024]
Abstract
Sorafenib is a targeted anticancer drug in clinic. Low-dose sorafenib has been reported to activate AMPK through inducing mitochondrial uncoupling without detectable toxicities. AMPK activation has been the approach for extending lifespan, therefore, we investigated the effect of sorafenib on lifespan and physical activity of C. elegans and the underlying mechanisms. In the present study, we found that the effect of sorafenib on C. elegans lifespan was typically hermetic. Sorafenib treatment at higher concentrations (100 μM) was toxic but at lower concentrations (1, 2.5, 5 μM) was beneficial to C. elegans. Sorafenib (1 μM) treatment for whole-life period extended C. elegans lifespan and improved C. elegans physical activity as manifested by increasing pharyngeal pumping and body movement, preserving intestinal barrier integrity, muscle fibers organization and mitochondrial morphology. In addition, sorafenib (1 μM) treatment enhanced C. elegans stress resistance. Sorafenib activated AMPK through inducing mitochondrial uncoupling in C. elegans. Sorafenib treatment activated DAF-16, SKN-1, and increased SOD-3, HSP-16.2, GST-4 expression in C. elegans. Sorafenib treatment induced AMPK-dependent autophagy in C. elegans. We conclude that low-dose sorafenib protects C. elegans against aging through activating AMPK/DAF-16 dependent anti-oxidant pathways and stimulating autophagy responses. Low-dose sorafenib could be a strategy for treating aging and aging-related diseases.
Collapse
Affiliation(s)
- Lu-Yao Zheng
- Department of Pharmacology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yan-Xin Da
- Department of Pharmacology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Xiu Luo
- Department of Pharmacology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Xiao Zhang
- Department of Pharmacology, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Zhi-Jie Sun
- Department of Pharmacology, China Pharmaceutical University, Nanjing, People's Republic of China.
| | - De-Li Dong
- Department of Pharmacology, China Pharmaceutical University, Nanjing, People's Republic of China.
| |
Collapse
|
20
|
Beretta M, Dai Y, Olzomer EM, Vancuylenburg CS, Santiago-Rivera JA, Philp AM, Hargett SR, Li K, Shah DP, Chen SY, Alexopoulos SJ, Li C, Harris TE, Lee B, Wathier M, Cermak JM, Tucker SP, Turner N, Bayliss DA, Philp A, Byrne FL, Santos WL, Hoehn KL. Liver-Selective Imidazolopyrazine Mitochondrial Uncoupler SHD865 Reverses Adiposity and Glucose Intolerance in Mice. Diabetes 2024; 73:374-384. [PMID: 37870907 PMCID: PMC10882157 DOI: 10.2337/db23-0233] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 10/04/2023] [Indexed: 10/24/2023]
Abstract
Excess body fat is a risk factor for metabolic diseases and is a leading preventable cause of morbidity and mortality worldwide. There is a strong need to find new treatments that decrease the burden of obesity and lower the risk of obesity-related comorbidities, including cardiovascular disease and type 2 diabetes. Pharmacologic mitochondrial uncouplers represent a potential treatment for obesity through their ability to increase nutrient oxidation. Herein, we report the in vitro and in vivo characterization of compound SHD865, the first compound to be studied in vivo in a newly discovered class of imidazolopyrazine mitochondrial uncouplers. SHD865 is a derivative of the furazanopyrazine uncoupler BAM15. SHD865 is a milder mitochondrial uncoupler than BAM15 that results in a lower maximal respiration rate. In a mouse model of diet-induced adiposity, 6-week treatment with SHD865 completely restored normal body composition and glucose tolerance to levels like those of chow-fed controls, without altering food intake. SHD865 treatment also corrected liver steatosis and plasma hyperlipidemia to normal levels comparable with chow-fed controls. SHD865 has maximal oral bioavailability in rats and slow clearance in human microsomes and hepatocytes. Collectively, these data identify the potential of imidazolopyrazine mitochondrial uncouplers as drug candidates for the treatment of obesity-related disorders. ARTICLE HIGHLIGHTS
Collapse
Affiliation(s)
- Martina Beretta
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - Yumin Dai
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA
| | - Ellen M. Olzomer
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - Calum S. Vancuylenburg
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - José A. Santiago-Rivera
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA
| | - Ashleigh M. Philp
- St Vincent’s Clinical School, UNSW Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Stefan R. Hargett
- Department of Pharmacology, University of Virginia, Charlottesville, VA
| | - Keyong Li
- Department of Pharmacology, University of Virginia, Charlottesville, VA
| | - Divya P. Shah
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - Sing-Young Chen
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - Stephanie J. Alexopoulos
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - Catherine Li
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - Thurl E. Harris
- Department of Pharmacology, University of Virginia, Charlottesville, VA
| | - Brendan Lee
- Biological Resources Imaging Laboratory, University of New South Wales, Sydney, New South Wales, Australia
| | | | | | - Simon P. Tucker
- Life Biosciences, Boston, MA
- Firebrick Pharma, Melbourne, Victoria, Australia
| | - Nigel Turner
- Cellular Bioenergetics Laboratory, Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia
| | | | - Andrew Philp
- Centre for Healthy Ageing, Centenary Institute, Camperdown, New South Wales, Australia
- School of Sport, Exercise and Rehabilitation Sciences, University of Technology Sydney, Sydney, New South Wales, Australia
- Charles Perkins Centre, The University of Sydney, Camperdown, New South Wales, Australia
| | - Frances L. Byrne
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
| | - Webster L. Santos
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA
| | - Kyle L. Hoehn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales, Australia
- Department of Pharmacology, University of Virginia, Charlottesville, VA
| |
Collapse
|
21
|
Liu Z, Mo J, Li Y, Liu S, Zeng Q, Zhang J. Effect of the mitochondrial uncoupling agent BAM15 against the Toxoplasma gondii RH strain and Prugniaud strain. Parasit Vectors 2024; 17:96. [PMID: 38424591 PMCID: PMC10905885 DOI: 10.1186/s13071-024-06187-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/08/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Toxoplasmosis is a zoonotic disease caused by the infection of the protozoa Toxoplasma gondii (T. gondii), and safe and effective therapeutic drugs are lacking. Mitochondria, is an important organelle that maintains T. gondii survival, however, drugs targeting mitochondria are lacking. METHODS The cytotoxicity of BAM15 was detected by CCK-8 and the in vitro effects of BAM15 was detected by qPCR, plaque assay and flow cytometry. Furthermore, the ultrastructural changes of T. gondii after BAM15 treatment were observed by transmission electron microscopy, and further the mitochondrial membrane potential (ΔΨm), ATP level and reactive oxygen species (ROS) of T. gondii after BAM15 treatment were detected. The pharmacokinetic experiments and in vivo infection assays were performed in mice to determine the in vivo effect of BAM15. RESULTS BAM15 had excellent anti-T. gondii activity in vitro and in vivo with an EC50 value of 1.25 μM, while the IC50 of BAM15 in Vero cells was 27.07 μM. Notably, BAM15 significantly inhibited proliferation activity of T. gondii RH strain and Prugniaud strain (PRU), caused T. gondii death. Furthermore, BAM15 treatment induced T. gondii mitochondrial vacuolation and autolysis by TEM. Moreover, the decrease in ΔΨm and ATP level, as well as the increase in ROS production further confirmed the changes CONCLUSIONS: Our study identifies a useful T. gondii mitochondrial inhibitor, which may also serve as a leading molecule to develop therapeutic mitochondrial inhibitors in toxoplasmosis.'
Collapse
Affiliation(s)
- Zhendi Liu
- Health Science Center, Ningbo University, Ningbo, Zhengjiang Province, 315211, People's Republic of China
| | - Jiao Mo
- Health Science Center, Ningbo University, Ningbo, Zhengjiang Province, 315211, People's Republic of China
| | - Yetian Li
- Health Science Center, Ningbo University, Ningbo, Zhengjiang Province, 315211, People's Republic of China
| | - Siyang Liu
- Health Science Center, Ningbo University, Ningbo, Zhengjiang Province, 315211, People's Republic of China
| | - Qingyuan Zeng
- Health Science Center, Ningbo University, Ningbo, Zhengjiang Province, 315211, People's Republic of China
| | - Jili Zhang
- Health Science Center, Ningbo University, Ningbo, Zhengjiang Province, 315211, People's Republic of China.
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Lanzhou, Gansu Province, 730050, People's Republic of China.
| |
Collapse
|
22
|
Davidsen K, Marvin JS, Aggarwal A, Brown TA, Sullivan LB. An engineered biosensor enables dynamic aspartate measurements in living cells. eLife 2024; 12:RP90024. [PMID: 38393319 PMCID: PMC10942590 DOI: 10.7554/elife.90024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024] Open
Abstract
Intracellular levels of the amino acid aspartate are responsive to changes in metabolism in mammalian cells and can correspondingly alter cell function, highlighting the need for robust tools to measure aspartate abundance. However, comprehensive understanding of aspartate metabolism has been limited by the throughput, cost, and static nature of the mass spectrometry (MS)-based measurements that are typically employed to measure aspartate levels. To address these issues, we have developed a green fluorescent protein (GFP)-based sensor of aspartate (jAspSnFR3), where the fluorescence intensity corresponds to aspartate concentration. As a purified protein, the sensor has a 20-fold increase in fluorescence upon aspartate saturation, with dose-dependent fluorescence changes covering a physiologically relevant aspartate concentration range and no significant off target binding. Expressed in mammalian cell lines, sensor intensity correlated with aspartate levels measured by MS and could resolve temporal changes in intracellular aspartate from genetic, pharmacological, and nutritional manipulations. These data demonstrate the utility of jAspSnFR3 and highlight the opportunities it provides for temporally resolved and high-throughput applications of variables that affect aspartate levels.
Collapse
Affiliation(s)
- Kristian Davidsen
- Human Biology Division, Fred Hutchinson Cancer CenterSeattleUnited States
- Molecular and Cellular Biology Program, University of WashingtonSeattleUnited States
| | - Jonathan S Marvin
- Howard Hughes Medical Institute (HHMI), Janelia Research CampusAshburnUnited States
| | - Abhi Aggarwal
- Howard Hughes Medical Institute (HHMI), Janelia Research CampusAshburnUnited States
| | - Timothy A Brown
- Howard Hughes Medical Institute (HHMI), Janelia Research CampusAshburnUnited States
| | - Lucas B Sullivan
- Human Biology Division, Fred Hutchinson Cancer CenterSeattleUnited States
| |
Collapse
|
23
|
Chen SY, Telfser AJ, Olzomer EM, Vancuylenberg CS, Zhou M, Beretta M, Li C, Alexopoulos SJ, Turner N, Byrne FL, Santos W, Hoehn KL. Beneficial effects of simultaneously targeting calorie intake and calorie efficiency in diet-induced obese mice. Clin Sci (Lond) 2024; 138:173-187. [PMID: 38315575 PMCID: PMC10876416 DOI: 10.1042/cs20231016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 01/16/2024] [Accepted: 02/05/2024] [Indexed: 02/07/2024]
Abstract
Semaglutide is an anti-diabetes and weight loss drug that decreases food intake, slows gastric emptying, and increases insulin secretion. Patients begin treatment with low-dose semaglutide and increase dosage over time as efficacy plateaus. With increasing dosage, there is also greater incidence of gastrointestinal side effects. One reason for the plateau in semaglutide efficacy despite continued low food intake is due to compensatory actions whereby the body becomes more metabolically efficient to defend against further weight loss. Mitochondrial uncoupler drugs decrease metabolic efficiency, therefore we sought to investigate the combination therapy of semaglutide with the mitochondrial uncoupler BAM15 in diet-induced obese mice. Mice were fed high-fat western diet (WD) and stratified into six treatment groups including WD control, BAM15, low-dose semaglutide without or with BAM15, and high-dose semaglutide without or with BAM15. Combining BAM15 with either semaglutide dose decreased body fat and liver triglycerides, which was not achieved by any monotherapy, while high-dose semaglutide with BAM15 had the greatest effect on glucose homeostasis. This study demonstrates a novel approach to improve weight loss without loss of lean mass and improve glucose control by simultaneously targeting energy intake and energy efficiency. Such a combination may decrease the need for semaglutide dose escalation and hence minimize potential gastrointestinal side effects.
Collapse
Affiliation(s)
- Sing-Young Chen
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Aiden J. Telfser
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Ellen M. Olzomer
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Calum S. Vancuylenberg
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Mingyan Zhou
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Martina Beretta
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Catherine Li
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Stephanie J. Alexopoulos
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Nigel Turner
- Cellular Bioenergetics Laboratory, Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
- School of Biomedical Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Frances L. Byrne
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Webster L. Santos
- Department of Chemistry and Virginia Tech Centre for Drug Discovery, Virginia Tech, Blacksburg, VA 24061, U.S.A
| | - Kyle L. Hoehn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| |
Collapse
|
24
|
Zafar S, Fatima SI, Schmitz M, Zerr I. Current Technologies Unraveling the Significance of Post-Translational Modifications (PTMs) as Crucial Players in Neurodegeneration. Biomolecules 2024; 14:118. [PMID: 38254718 PMCID: PMC10813409 DOI: 10.3390/biom14010118] [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: 12/14/2023] [Revised: 01/09/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Neurodegenerative disorders, such as Parkinson's disease, Alzheimer's disease, and Huntington's disease, are identified and characterized by the progressive loss of neurons and neuronal dysfunction, resulting in cognitive and motor impairment. Recent research has shown the importance of PTMs, such as phosphorylation, acetylation, methylation, ubiquitination, sumoylation, nitration, truncation, O-GlcNAcylation, and hydroxylation, in the progression of neurodegenerative disorders. PTMs can alter protein structure and function, affecting protein stability, localization, interactions, and enzymatic activity. Aberrant PTMs can lead to protein misfolding and aggregation, impaired degradation, and clearance, and ultimately, to neuronal dysfunction and death. The main objective of this review is to provide an overview of the PTMs involved in neurodegeneration, their underlying mechanisms, methods to isolate PTMs, and the potential therapeutic targets for these disorders. The PTMs discussed in this article include tau phosphorylation, α-synuclein and Huntingtin ubiquitination, histone acetylation and methylation, and RNA modifications. Understanding the role of PTMs in neurodegenerative diseases may provide new therapeutic strategies for these devastating disorders.
Collapse
Affiliation(s)
- Saima Zafar
- Department of Neurology, Clinical Dementia Center and DZNE, University Medical Center Goettingen (UMG), Georg-August University, Robert-Koch-Str. 40, 37075 Goettingen, Germany
- Biomedical Engineering and Sciences Department, School of Mechanical and Manufacturing Engineering (SMME), National University of Sciences and Technology (NUST), Bolan Road, H-12, Islamabad 44000, Pakistan
| | - Shehzadi Irum Fatima
- Department of Neurology, Clinical Dementia Center and DZNE, University Medical Center Goettingen (UMG), Georg-August University, Robert-Koch-Str. 40, 37075 Goettingen, Germany
| | - Matthias Schmitz
- Department of Neurology, Clinical Dementia Center and DZNE, University Medical Center Goettingen (UMG), Georg-August University, Robert-Koch-Str. 40, 37075 Goettingen, Germany
| | - Inga Zerr
- Department of Neurology, Clinical Dementia Center and DZNE, University Medical Center Goettingen (UMG), Georg-August University, Robert-Koch-Str. 40, 37075 Goettingen, Germany
| |
Collapse
|
25
|
Patil YN, Gnaiger E, Landry AP, Leno ZJ, Hand SC. OXPHOS capacity is diminished and the phosphorylation system inhibited during diapause in an extremophile, embryos of Artemia franciscana. J Exp Biol 2024; 227:jeb245828. [PMID: 38099471 DOI: 10.1242/jeb.245828] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 12/04/2023] [Indexed: 01/23/2024]
Abstract
Diapause exhibited by embryos of Artemia franciscana is accompanied by severe arrest of respiration. A large fraction of this depression is attributable to downregulation of trehalose catabolism that ultimately restricts fuel to mitochondria. This study now extends knowledge on the mechanism by revealing metabolic depression is heightened by inhibitions within mitochondria. Compared with that in embryo lysates during post-diapause, oxidative phosphorylation (OXPHOS) capacity P is depressed during diapause when either NADH-linked substrates (pyruvate and malate) for electron transfer (electron transfer capacity, E) through respiratory Complex I or the Complex II substrate succinate are used. When pyruvate, malate and succinate were combined, respiratory inhibition by the phosphorylation system in diapause lysates was discovered as judged by P/E flux control ratios (two-way ANOVA; F1,24=38.78; P<0.0001). Inhibition was eliminated as the diapause extract was diluted (significant interaction term; F2,24=9.866; P=0.0007), consistent with the presence of a diffusible inhibitor. One candidate is long-chain acyl-CoA esters known to inhibit the adenine nucleotide translocator. Addition of oleoyl-CoA to post-diapause lysates markedly decreased the P/E ratio to 0.40±0.07 (mean±s.d.; P=0.002) compared with 0.79±0.11 without oleoyl-CoA. Oleoyl-CoA inhibits the phosphorylation system and may be responsible for the depressed P/E in lysates from diapause embryos. With isolated mitochondria, depression of P/E by oleoyl-CoA was fully reversed by addition of l-carnitine (control versus recovery with l-carnitine, P=0.338), which facilitates oleoyl-CoA transport into the matrix and elimination by β-oxidation. In conclusion, severe metabolic arrest during diapause promoted by restricting glycolytic carbon to mitochondria is reinforced by depression of OXPHOS capacity and the phosphorylation system.
Collapse
Affiliation(s)
- Yuvraj N Patil
- Department of Biological Sciences, Division of Cellular, Developmental and Integrative Biology, Louisiana State University, Baton Rouge, LA 70803, USA
| | | | - Alexander P Landry
- Department of Biological Sciences, Division of Cellular, Developmental and Integrative Biology, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Zachary J Leno
- Department of Biological Sciences, Division of Cellular, Developmental and Integrative Biology, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Steven C Hand
- Department of Biological Sciences, Division of Cellular, Developmental and Integrative Biology, Louisiana State University, Baton Rouge, LA 70803, USA
| |
Collapse
|
26
|
Guseva EA, Pavlova JA, Dontsova OA, Sergiev PV. Synthetic Activators of Autophagy. BIOCHEMISTRY. BIOKHIMIIA 2024; 89:27-52. [PMID: 38467544 DOI: 10.1134/s0006297924010024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/24/2023] [Accepted: 11/26/2023] [Indexed: 03/13/2024]
Abstract
Autophagy is a central process for degradation of intracellular components that do not operate correctly. Molecular mechanisms underlying this process are extremely difficult to study, since they involve a large number of participants. The main task of autophagy is redistribution of cellular resources in response to environmental changes, such as starvation. Recent studies show that autophagy regulation could be the key to achieve healthy longevity, as well as to create therapeutic agents for treatment of neurodegenerative diseases such as Parkinson's and Alzheimer's diseases. Thus, development of autophagy activators with established detailed mechanism of action is a really important area of research. Several commercial companies are at various stages of development of such molecules, and some of them have already begun to introduce autophagy activators to the market.
Collapse
Affiliation(s)
- Ekaterina A Guseva
- Center of Life Sciences, Skolkovo Institute of Science and Technology, Skolkovo, 143025, Russia.
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Julia A Pavlova
- Center of Life Sciences, Skolkovo Institute of Science and Technology, Skolkovo, 143025, Russia
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Olga A Dontsova
- Center of Life Sciences, Skolkovo Institute of Science and Technology, Skolkovo, 143025, Russia
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Moscow, 117997, Russia
| | - Petr V Sergiev
- Center of Life Sciences, Skolkovo Institute of Science and Technology, Skolkovo, 143025, Russia.
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, 119991, Russia
- Institute of Functional Genomics, Lomonosov Moscow State University, Moscow, 119991, Russia
| |
Collapse
|
27
|
Li A, Qin Y, Zhang Y, Zhen X, Gong G. Evaluation of Oxygen Consumption Rates In Situ. Methods Mol Biol 2024; 2755:215-226. [PMID: 38319581 DOI: 10.1007/978-1-0716-3633-6_16] [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] [Indexed: 02/07/2024]
Abstract
An analysis of the mitochondrial respiration function represented by the oxygen consumption rate is necessary to assess mitochondrial bioenergetics and redox function. This protocol describes two alternative techniques to evaluate mitochondrial respiration function in situ: (1) measure oxygen consumption rates via an electrode; (2) measure oxygen consumption rates via a seahorse instrument. These in situ approaches provide more physiological access to mitochondria to evaluate mitochondrial respiration function in a relatively integrated cellular system.
Collapse
Affiliation(s)
- Anqi Li
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Yuan Qin
- Department of Pharmacy, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Ying Zhang
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Xiaoqun Zhen
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
- Department of Clinical Laboratory, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Guohua Gong
- Key Laboratory of Laboratory Medicine, Ministry of Education, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
- Institute for Regenerative Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| |
Collapse
|
28
|
Choe M, Titov DV. Genetically encoded tool for manipulation of ΔΨm identifies the latter as the driver of integrative stress response induced by ATP Synthase dysfunction. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.27.573435. [PMID: 38234735 PMCID: PMC10793441 DOI: 10.1101/2023.12.27.573435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Mitochondrial membrane potential (ΔΨm) is one of the key parameters controlling cellular bioenergetics. Investigation of the role of ΔΨm in live cells is complicated by a lack of tools for its direct manipulation without off-target effects. Here, we adopted the uncoupling protein UCP1 from brown adipocytes as a genetically encoded tool for direct manipulation of ΔΨm. We validated the ability of exogenously expressed UCP1 to induce uncoupled respiration and lower ΔΨm in mammalian cells. UCP1 expression lowered ΔΨm to the same extent as chemical uncouplers but did not inhibit cell proliferation, suggesting that it manipulates ΔΨm without the off-target effects of chemical uncouplers. Using UCP1, we revealed that elevated ΔΨm is the driver of the Integrated Stress Response induced by ATP synthase inhibition in mammalian cells.
Collapse
Affiliation(s)
- Mangyu Choe
- Department of Nutritional Sciences and Toxicology, University of California; Berkeley, CA 94720, USA
- Department of Molecular and Cell Biology, University of California; Berkeley, CA 94720, USA
| | - Denis V Titov
- Department of Nutritional Sciences and Toxicology, University of California; Berkeley, CA 94720, USA
- Department of Molecular and Cell Biology, University of California; Berkeley, CA 94720, USA
- Center for Computational Biology, University of California; Berkeley, CA 94720, USA
| |
Collapse
|
29
|
Gorospe CM, Carvalho G, Herrera Curbelo A, Marchhart L, Mendes IC, Niedźwiecka K, Wanrooij PH. Mitochondrial membrane potential acts as a retrograde signal to regulate cell cycle progression. Life Sci Alliance 2023; 6:e202302091. [PMID: 37696576 PMCID: PMC10494934 DOI: 10.26508/lsa.202302091] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023] Open
Abstract
Mitochondria are central to numerous metabolic pathways whereby mitochondrial dysfunction has a profound impact and can manifest in disease. The consequences of mitochondrial dysfunction can be ameliorated by adaptive responses that rely on crosstalk from the mitochondria to the rest of the cell. Such mito-cellular signalling slows cell cycle progression in mitochondrial DNA-deficient (ρ0) Saccharomyces cerevisiae cells, but the initial trigger of the response has not been thoroughly studied. Here, we show that decreased mitochondrial membrane potential (ΔΨm) acts as the initial signal of mitochondrial stress that delays G1-to-S phase transition in both ρ0 and control cells containing mtDNA. Accordingly, experimentally increasing ΔΨm was sufficient to restore timely cell cycle progression in ρ0 cells. In contrast, cellular levels of oxidative stress did not correlate with the G1-to-S delay. Restored G1-to-S transition in ρ0 cells with a recovered ΔΨm is likely attributable to larger cell size, whereas the timing of G1/S transcription remained delayed. The identification of ΔΨm as a regulator of cell cycle progression may have implications for disease states involving mitochondrial dysfunction.
Collapse
Affiliation(s)
- Choco Michael Gorospe
- https://ror.org/05kb8h459 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Gustavo Carvalho
- https://ror.org/05kb8h459 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Alicia Herrera Curbelo
- https://ror.org/05kb8h459 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Lisa Marchhart
- https://ror.org/05kb8h459 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Isabela C Mendes
- https://ror.org/05kb8h459 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| | - Katarzyna Niedźwiecka
- https://ror.org/05kb8h459 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Paulina H Wanrooij
- https://ror.org/05kb8h459 Department of Medical Biochemistry and Biophysics, Umeå University, Umeå, Sweden
| |
Collapse
|
30
|
Gureev AP, Alimova AA, Silachev DN, Plotnikov EY. Noncoupled Mitochondrial Respiration as Therapeutic Approach for the Treatment of Metabolic Diseases: Focus on Transgenic Animal Models. Int J Mol Sci 2023; 24:16491. [PMID: 38003681 PMCID: PMC10671337 DOI: 10.3390/ijms242216491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Mitochondrial dysfunction contributes to numerous chronic diseases, and mitochondria are targets for various toxins and xenobiotics. Therefore, the development of drugs or therapeutic strategies targeting mitochondria is an important task in modern medicine. It is well known that the primary, although not the sole, function of mitochondria is ATP generation, which is achieved by coupled respiration. However, a high membrane potential can lead to uncontrolled reactive oxygen species (ROS) production and associated dysfunction. For over 50 years, scientists have been studying various synthetic uncouplers, and for more than 30 years, uncoupling proteins that are responsible for uncoupled respiration in mitochondria. Additionally, the proteins of the mitochondrial alternative respiratory pathway exist in plant mitochondria, allowing noncoupled respiration, in which electron flow is not associated with membrane potential formation. Over the past two decades, advances in genetic engineering have facilitated the creation of various cellular and animal models that simulate the effects of uncoupled and noncoupled respiration in different tissues under various disease conditions. In this review, we summarize and discuss the findings obtained from these transgenic models. We focus on the advantages and limitations of transgenic organisms, the observed physiological and biochemical changes, and the therapeutic potential of uncoupled and noncoupled respiration.
Collapse
Affiliation(s)
- Artem P. Gureev
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.); (A.A.A.)
- Laboratory of Metagenomics and Food Biotechnology, Voronezh State University of Engineering Technologies, 394036 Voronezh, Russia
| | - Alina A. Alimova
- Department of Genetics, Cytology and Bioengineering, Voronezh State University, 394018 Voronezh, Russia; (A.P.G.); (A.A.A.)
- Laboratory of Metagenomics and Food Biotechnology, Voronezh State University of Engineering Technologies, 394036 Voronezh, Russia
| | - Denis N. Silachev
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia;
| | - Egor Y. Plotnikov
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119234 Moscow, Russia;
| |
Collapse
|
31
|
Xiong G, Zhang K, Ma Y, Song Y, Zhang W, Qi T, Qiu H, Shi J, Kan C, Zhang J, Sun X. BAM15 as a mitochondrial uncoupler: a promising therapeutic agent for diverse diseases. Front Endocrinol (Lausanne) 2023; 14:1252141. [PMID: 37900126 PMCID: PMC10600450 DOI: 10.3389/fendo.2023.1252141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023] Open
Abstract
Subcellular organelles dysfunction is implicated in various diseases, including metabolic diseases, neurodegenerative diseases, cancer, and cardiovascular diseases. BAM15, a selective mitochondrial uncoupler, has emerged as a promising therapeutic agent due to its ability to enhance mitochondrial respiration and metabolic flexibility. By disrupting the coupling between electron transport and ATP synthesis, BAM15 dissipates the proton gradient, leading to increased mitochondrial respiration and energy expenditure. This review provides a comprehensive overview of BAM15, including its mechanism of action and potential therapeutic applications in diverse disease contexts. BAM15 has shown promise in obesity by increasing energy expenditure and reducing fat accumulation. In diabetes, it improves glycemic control and reverses insulin resistance. Additionally, BAM15 has potential in non-alcoholic fatty liver disease, sepsis, and cardiovascular diseases by mitigating oxidative stress, modulating inflammatory responses, and promoting cardioprotection. The safety profile of BAM15 is encouraging, with minimal adverse effects and remarkable tolerability. However, challenges such as its high lipophilicity and the need for alternative delivery methods need to be addressed. Further research is necessary to fully understand the therapeutic potential of BAM15 and optimize its application in clinical settings.
Collapse
Affiliation(s)
- Guoji Xiong
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Kexin Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Yujie Ma
- Department of Pathophysiology, School of Basic Medical Sciences, Weifang Medical University, Weifang, China
| | - Yixin Song
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Wenqiang Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
- Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Tongbing Qi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Hongyan Qiu
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Junfeng Shi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Chengxia Kan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Jingwen Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Xiaodong Sun
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, School of Clinical Medicine, Weifang Medical University, Weifang, China
- Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| |
Collapse
|
32
|
Inoue Y, Wada Y, Sato M, Sato S, Okamoto T, Kanemoto N. Carbonyl cyanide-4-(trifluoromethoxy)phenylhydrazone-induced toxicities in rats: comparative study with other mitochondrial uncouplers (2,4-dinitrophenol, OPC-163493 and tolcapone). Toxicol Res 2023; 39:611-623. [PMID: 37779591 PMCID: PMC10541353 DOI: 10.1007/s43188-023-00189-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/28/2023] [Accepted: 05/04/2023] [Indexed: 10/03/2023] Open
Abstract
FCCP (carbonyl cyanide-4-(trifluoromethoxy)phenylhydrazone) is known to inhibit oxidative phosphorylation as a protonophore, dissipating the proton gradient across the inner mitochondrial membrane. To understand the toxicity of FCCP, 3-day, 2- and 4-week repeated oral dose studies were performed in male rats. In the 3-day and 2-week repeated dose toxicity studies, observations included salivation, increased body temperature, and dead and moribund animals. Increased liver weight was observed in conjunction with hydropic degeneration and centrilobular necrosis of hepatocytes. In addition, pathological changes were observed in the pancreas, testis, epididymal duct, stomach and parotid gland. Electron microscopic examination revealed mitochondrial pleomorphism in the hepatocytes. Swelling of mitochondria was observed in the alpha cells and beta cells of the pancreas. Dilatation of rough endoplasmic reticulum, Golgi bodies and loss of secretory granules were also noted in the beta cells of the pancreas. FCCP was also compared with three other mUncouplers (DNP, OPC-163493 and tolcapone) with regard to in vitro mitochondrial uncoupling (mUncoupling) activities. FCCP produced the peak ΔOCR (oxygen consumption rate) at the lowest concentration (0.4 μM), followed by OPC-163493, tolcapone, and DNP, based on peak values in ascending order of concentration (2.5, 10, and 50 μM, respectively). Considering the relationship between the mUncoupling activity and toxicity profile of the four mUncouplers, there is no parallel relationship between the in vitro mUncoupling activity and the degree of in vivo toxicity. These findings may contribute to the efficient development of new mitochondrial uncoupler candidates. Supplementary Information The online version contains supplementary material available at 10.1007/s43188-023-00189-x.
Collapse
Affiliation(s)
- Yuki Inoue
- Department of Drug Safety Research, Nonclinical Research Center, Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd., 463-10 Kagasuno, Kawauchi-cho, Tokushima, 771-0192 Japan
| | - Yuko Wada
- PV Operation, Pharmacovigilance Department, Otsuka Pharmaceutical Co., Ltd., Osaka, Japan
| | - Makoto Sato
- Department of Drug Safety Research, Nonclinical Research Center, Tokushima Research Institute, Otsuka Pharmaceutical Co., Ltd., 463-10 Kagasuno, Kawauchi-cho, Tokushima, 771-0192 Japan
| | - Seiji Sato
- Medicinal Chemistry Research Laboratories, New Drug Research Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Takashi Okamoto
- Department of Lead Discovery Research, New Drug Research Division, Otsuka Pharmaceutical Co., Ltd., Tokushima, Japan
| | - Naohide Kanemoto
- Department of Drug Discovery Strategy, Osaka Research Center for Drug Discovery, Otsuka Pharmaceutical Co., Ltd., Osaka, Japan
| |
Collapse
|
33
|
Liu D, Xiao M, Zhou J, Wang P, Peng J, Mao W, Hu Y, Liu Y, Yin J, Ke L, Li W. PFKFB3 promotes sepsis-induced acute lung injury by enhancing NET formation by CXCR4 hi neutrophils. Int Immunopharmacol 2023; 123:110737. [PMID: 37543012 DOI: 10.1016/j.intimp.2023.110737] [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: 06/12/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/07/2023]
Abstract
CXCR4hi neutrophils, which are a subset of neutrophils with high CXCR4 expression, are important contributors to sepsis-induced acute lung injury (ALI). PFKFB3, a key glycolysis gene, plays an essential role in neutrophil inflammatory activation. However, the specific involvement of PFKFB3 in sepsis-induced ALI remains unclear. Here, we observed that PFKFB3 was upregulated in CXCR4hi neutrophils and facilitated sepsis-induced ALI. Mechanistically, we observed that PFKFB3 promoted sepsis-induced ALI by enhancing neutrophil extracellular trap (NET) formation by CXCR4hi neutrophils. Further study indicated that PFKFB3 promoted NET formation by upregulating glycolytic metabolism in CXCR4hi neutrophils. In summary, our study uncovered a new mechanism by which CXCR4hi neutrophils trigger sepsis-induced ALI by promoting NET formation, which is supported by PFKFB3-mediated glycolytic metabolism.
Collapse
Affiliation(s)
- Dadong Liu
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Min Xiao
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jing Zhou
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Peng Wang
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jingwen Peng
- Center of Severe Acute Pancreatitis (CSAP), Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Wenjian Mao
- Center of Severe Acute Pancreatitis (CSAP), Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Yuepeng Hu
- Center of Severe Acute Pancreatitis (CSAP), Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Yuxiu Liu
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Jiangtao Yin
- Department of Critical Care Medicine, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China; Digestive Disease Institute, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, China.
| | - Lu Ke
- Center of Severe Acute Pancreatitis (CSAP), Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China.
| | - Weiqin Li
- Department of Critical Care Medicine, Jinling Hospital, Medical School of Nanjing Medical University, Nanjing, Jiangsu, China.
| |
Collapse
|
34
|
Ghorbani P, Kim SY, Smith TKT, Minarrieta L, Robert-Gostlin V, Kilgour MK, Ilijevska M, Alecu I, Snider SA, Margison KD, Nunes JRC, Woo D, Pember C, O’Dwyer C, Ouellette J, Kotchetkov P, St-Pierre J, Bennett SAL, Lacoste B, Blais A, Nair MG, Fullerton MD. Choline metabolism underpins macrophage IL-4 polarization and RELMα up-regulation in helminth infection. PLoS Pathog 2023; 19:e1011658. [PMID: 37747879 PMCID: PMC10553840 DOI: 10.1371/journal.ppat.1011658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 10/05/2023] [Accepted: 09/05/2023] [Indexed: 09/27/2023] Open
Abstract
Type 2 cytokines like IL-4 are hallmarks of helminth infection and activate macrophages to limit immunopathology and mediate helminth clearance. In addition to cytokines, nutrients and metabolites critically influence macrophage polarization. Choline is an essential nutrient known to support normal macrophage responses to lipopolysaccharide; however, its function in macrophages polarized by type 2 cytokines is unknown. Using murine IL-4-polarized macrophages, targeted lipidomics revealed significantly elevated levels of phosphatidylcholine, with select changes to other choline-containing lipid species. These changes were supported by the coordinated up-regulation of choline transport compared to naïve macrophages. Pharmacological inhibition of choline metabolism significantly suppressed several mitochondrial transcripts and dramatically inhibited select IL-4-responsive transcripts, most notably, Retnla. We further confirmed that blocking choline metabolism diminished IL-4-induced RELMα (encoded by Retnla) protein content and secretion and caused a dramatic reprogramming toward glycolytic metabolism. To better understand the physiological implications of these observations, naïve or mice infected with the intestinal helminth Heligmosomoides polygyrus were treated with the choline kinase α inhibitor, RSM-932A, to limit choline metabolism in vivo. Pharmacological inhibition of choline metabolism lowered RELMα expression across cell-types and tissues and led to the disappearance of peritoneal macrophages and B-1 lymphocytes and an influx of infiltrating monocytes. The impaired macrophage activation was associated with some loss in optimal immunity to H. polygyrus, with increased egg burden. Together, these data demonstrate that choline metabolism is required for macrophage RELMα induction, metabolic programming, and peritoneal immune homeostasis, which could have important implications in the context of other models of infection or cancer immunity.
Collapse
Affiliation(s)
- Peyman Ghorbani
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Sang Yong Kim
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, California, United States of America
| | - Tyler K. T. Smith
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Lucía Minarrieta
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Victoria Robert-Gostlin
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Marisa K. Kilgour
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
| | - Maja Ilijevska
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
| | - Irina Alecu
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Shayne A. Snider
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Kaitlyn D. Margison
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Julia R. C. Nunes
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Daniel Woo
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, California, United States of America
| | - Ciara Pember
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
| | - Conor O’Dwyer
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Julie Ouellette
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Pavel Kotchetkov
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Julie St-Pierre
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Steffany A. L. Bennett
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, Canada
- University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Baptiste Lacoste
- Neuroscience Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Alexandre Blais
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
- University of Ottawa Brain and Mind Institute, University of Ottawa, Ottawa, Ontario, Canada
- Éric Poulin Centre for Neuromuscular Disease, Ottawa, Ontario, Canada
| | - Meera G. Nair
- Division of Biomedical Sciences, School of Medicine, University of California Riverside, Riverside, California, United States of America
| | - Morgan D. Fullerton
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Infection, Immunity and Inflammation, University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Institute of Systems Biology, University of Ottawa, Ottawa, Ontario, Canada
- Centre for Catalysis Research and Innovation, University of Ottawa, Ottawa, Ontario, Canada
| |
Collapse
|
35
|
Suita K, Ishikawa K, Kaneko M, Wataki A, Takahashi M, Kiyonari H, Sunagawa GA. Mouse embryonic stem cells embody organismal-level cold resistance. Cell Rep 2023; 42:112954. [PMID: 37595588 DOI: 10.1016/j.celrep.2023.112954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 06/02/2023] [Accepted: 07/22/2023] [Indexed: 08/20/2023] Open
Abstract
During hibernation, some mammals show low body temperatures (<10°C). Tissues from hibernators exhibit cold resistance even when the animal is not hibernating. Mice can also enter hypothermic fasting-induced torpor (FIT), but the cold resistance of FIT has never been related to their tissues. Here, we show that an inbred mouse STM2 exhibits lower body temperature during FIT than C57BL/6J or MYS/Mz. Thus, STM2 resists the cold more than other strains. Analysis of strain-specific mouse embryonic stem (ES) cells shows that STM2 ES cells are more cold-resistant than others and rely on the oxidative phosphorylation (OXPHOS) pathway but respire independently of the electron transfer chain complex I in the cold. We also found that the liver of STM2 uses OXPHOS more in cold than other strains. This study demonstrates that an organismal phenotype associated with torpor can be effectively studied in an in vitro setup using mouse cells.
Collapse
Affiliation(s)
- Koukyou Suita
- Laboratory for Retinal Regeneration, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Molecular Biology of Aging, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Hibernation Biology, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Department of Anesthesiology and Resuscitology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Okayama City, Okayama 700-8558, Japan
| | - Kiyomi Ishikawa
- Laboratory for Retinal Regeneration, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Molecular Biology of Aging, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Hibernation Biology, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Mari Kaneko
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Ayaka Wataki
- Laboratory for Retinal Regeneration, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Molecular Biology of Aging, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Hibernation Biology, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Masayo Takahashi
- Laboratory for Retinal Regeneration, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Genshiro A Sunagawa
- Laboratory for Retinal Regeneration, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Molecular Biology of Aging, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan; Laboratory for Hibernation Biology, RIKEN Center for Biosystems Dynamics Research, 2-2-3 Minatojimaminami-machi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.
| |
Collapse
|
36
|
Prag HA, Murphy MP, Krieg T. Preventing mitochondrial reverse electron transport as a strategy for cardioprotection. Basic Res Cardiol 2023; 118:34. [PMID: 37639068 PMCID: PMC10462584 DOI: 10.1007/s00395-023-01002-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/04/2023] [Accepted: 08/06/2023] [Indexed: 08/29/2023]
Abstract
In the context of myocardial infarction, the burst of superoxide generated by reverse electron transport (RET) at complex I in mitochondria is a crucial trigger for damage during ischaemia/reperfusion (I/R) injury. Here we outline the necessary conditions for superoxide production by RET at complex I and how it can occur during reperfusion. In addition, we explore various pathways that are implicated in generating the conditions for RET to occur and suggest potential therapeutic strategies to target RET, aiming to achieve cardioprotection.
Collapse
Affiliation(s)
- Hiran A Prag
- Department of Medicine, University of Cambridge, Cambridge, CB2 0QQ, UK.
| | - Michael P Murphy
- Department of Medicine, University of Cambridge, Cambridge, CB2 0QQ, UK.
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge, CB2 0XY, UK.
| | - Thomas Krieg
- Department of Medicine, University of Cambridge, Cambridge, CB2 0QQ, UK.
| |
Collapse
|
37
|
Skinner WM, Petersen NT, Unger B, Tang S, Tabarsi E, Lamm J, Jalalian L, Smith J, Bertholet AM, Xu K, Kirichok Y, Lishko PV. Mitochondrial uncouplers impair human sperm motility without altering ATP content†. Biol Reprod 2023; 109:192-203. [PMID: 37294625 PMCID: PMC10427809 DOI: 10.1093/biolre/ioad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 04/22/2023] [Accepted: 06/01/2023] [Indexed: 06/11/2023] Open
Abstract
In human spermatozoa, the electrochemical potentials across the mitochondrial and plasma membranes are related to sperm functionality and fertility, but the exact role of each potential has yet to be clarified. Impairing sperm mitochondrial function has been considered as an approach to creating male or unisex contraceptives, but it has yet to be shown whether this approach would ultimately block the ability of sperm to reach or fertilize an egg. To investigate whether the mitochondrial and plasma membrane potentials are necessary for sperm fertility, human sperm were treated with two small-molecule mitochondrial uncouplers (niclosamide ethanolamine and BAM15) that depolarize membranes by inducing passive proton flow, and evaluated the effects on a variety of sperm physiological processes. BAM15 specifically uncoupled human sperm mitochondria while niclosamide ethanolamine induced proton current in the plasma membrane in addition to depolarizing the mitochondria. In addition, both compounds significantly decreased sperm progressive motility with niclosamide ethanolamine having a more robust effect. However, these uncouplers did not reduce sperm adenosine triphosphate (ATP) content or impair other physiological processes, suggesting that human sperm can rely on glycolysis for ATP production if mitochondria are impaired. Thus, systemically delivered contraceptives that target sperm mitochondria to reduce their ATP production would likely need to be paired with sperm-specific glycolysis inhibitors. However, since niclosamide ethanolamine impairs sperm motility through an ATP-independent mechanism, and niclosamide is FDA approved and not absorbed through mucosal membranes, it could be a useful ingredient in on-demand, vaginally applied contraceptives.
Collapse
Affiliation(s)
- Will M Skinner
- Endocrinology Graduate Group, University of California, Berkeley, Berkeley, California, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA
| | - Natalie T Petersen
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA
- Department of Obstetrics and Gynecology, Stanford University School of Medicine, Palo Alto, California, USA
| | - Bret Unger
- Department of Chemistry, University of California, Berkeley, Berkeley, California, USA
| | - Shaogeng Tang
- Department of Biochemistry, Stanford University School of Medicine, Stanford, California, USA
- Sarafan ChEM-H, Stanford University, Stanford, California, USA
| | - Emiliano Tabarsi
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Julianna Lamm
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA
- Dewpoint Therapeutics, Boston, Massachusetts, USA
| | - Liza Jalalian
- Department of Obstetrics and Gynecology, University of California, San Francisco Center for Reproductive Health, San Francisco, California, USA
| | - James Smith
- Department of Urology, University of California, San Francisco, San Francisco, California, USA
| | - Ambre M Bertholet
- Department of Physiology, University of California, San Francisco, San Francisco, California, USA
- Department of Physiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Ke Xu
- Department of Chemistry, University of California, Berkeley, Berkeley, California, USA
- California Institute for Quantitative Biosciences, University of California, Berkeley, California, USA
- Chan Zuckerberg Biohub, San Francisco, California, USA
| | - Yuriy Kirichok
- Department of Physiology, University of California, San Francisco, San Francisco, California, USA
| | - Polina V Lishko
- Endocrinology Graduate Group, University of California, Berkeley, Berkeley, California, USA
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA
- Department of Cell Biology & Physiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| |
Collapse
|
38
|
Lee WE, Genetzakis E, Figtree GA. Novel Strategies in the Early Detection and Treatment of Endothelial Cell-Specific Mitochondrial Dysfunction in Coronary Artery Disease. Antioxidants (Basel) 2023; 12:1359. [PMID: 37507899 PMCID: PMC10376062 DOI: 10.3390/antiox12071359] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 06/26/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Although elevated cholesterol and other recognised cardiovascular risk factors are important in the development of coronary artery disease (CAD) and heart attack, the susceptibility of humans to this fatal process is distinct from other animals. Mitochondrial dysfunction of cells in the arterial wall, particularly the endothelium, has been strongly implicated in the pathogenesis of CAD. In this manuscript, we review the established evidence and mechanisms in detail and explore the potential opportunities arising from analysing mitochondrial function in patient-derived cells such as endothelial colony-forming cells easily cultured from venous blood. We discuss how emerging technology and knowledge may allow us to measure mitochondrial dysfunction as a potential biomarker for diagnosis and risk management. We also discuss the "pros and cons" of animal models of atherosclerosis, and how patient-derived cell models may provide opportunities to develop novel therapies relevant for humans. Finally, we review several targets that potentially alleviate mitochondrial dysfunction working both via direct and indirect mechanisms and evaluate the effect of several classes of compounds in the cardiovascular context.
Collapse
Affiliation(s)
- Weiqian E. Lee
- Kolling Institute, University of Sydney, Sydney, NSW 2006, Australia; (W.E.L.); (E.G.)
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia
| | - Elijah Genetzakis
- Kolling Institute, University of Sydney, Sydney, NSW 2006, Australia; (W.E.L.); (E.G.)
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia
| | - Gemma A. Figtree
- Kolling Institute, University of Sydney, Sydney, NSW 2006, Australia; (W.E.L.); (E.G.)
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2006, Australia
- Department of Cardiology, Royal North Shore Hospital, Northern Sydney Local Health District, Sydney, NSW 2065, Australia
| |
Collapse
|
39
|
Zatyka M, Rosenstock TR, Sun C, Palhegyi AM, Hughes GW, Lara-Reyna S, Astuti D, di Maio A, Sciauvaud A, Korsgen ME, Stanulovic V, Kocak G, Rak M, Pourtoy-Brasselet S, Winter K, Varga T, Jarrige M, Polvèche H, Correia J, Frickel EM, Hoogenkamp M, Ward DG, Aubry L, Barrett T, Sarkar S. Depletion of WFS1 compromises mitochondrial function in hiPSC-derived neuronal models of Wolfram syndrome. Stem Cell Reports 2023; 18:1090-1106. [PMID: 37163979 PMCID: PMC10202695 DOI: 10.1016/j.stemcr.2023.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 04/05/2023] [Accepted: 04/06/2023] [Indexed: 05/12/2023] Open
Abstract
Mitochondrial dysfunction involving mitochondria-associated ER membrane (MAM) dysregulation is implicated in the pathogenesis of late-onset neurodegenerative diseases, but understanding is limited for rare early-onset conditions. Loss of the MAM-resident protein WFS1 causes Wolfram syndrome (WS), a rare early-onset neurodegenerative disease that has been linked to mitochondrial abnormalities. Here we demonstrate mitochondrial dysfunction in human induced pluripotent stem cell-derived neuronal cells of WS patients. VDAC1 is identified to interact with WFS1, whereas loss of this interaction in WS cells could compromise mitochondrial function. Restoring WFS1 levels in WS cells reinstates WFS1-VDAC1 interaction, which correlates with an increase in MAMs and mitochondrial network that could positively affect mitochondrial function. Genetic rescue by WFS1 overexpression or pharmacological agents modulating mitochondrial function improves the viability and bioenergetics of WS neurons. Our data implicate a role of WFS1 in regulating mitochondrial functionality and highlight a therapeutic intervention for WS and related rare diseases with mitochondrial defects.
Collapse
Affiliation(s)
- Malgorzata Zatyka
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Tatiana R Rosenstock
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Congxin Sun
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Adina M Palhegyi
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Georgina W Hughes
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Samuel Lara-Reyna
- Institute of Microbiology and Infection, University of Birmingham, Birmingham B15 2TT, UK
| | - Dewi Astuti
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Alessandro di Maio
- Tech Hub Microscopy Facility, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Axel Sciauvaud
- INSERM UMR 861, I-STEM, AFM, 91100 Corbeil-Essonnes, France; Université Paris-Saclay, INSERM, University Evry, Institut des cellules Souches pour le Traitement et l'Etude des maladies Monogéniques, 91100 Corbeil-Essonnes, France
| | - Miriam E Korsgen
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Vesna Stanulovic
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Gamze Kocak
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Malgorzata Rak
- Université Paris Cité, INSERM, NeuroDiderot, 75019 Paris, France
| | | | - Katherine Winter
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Thiago Varga
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Margot Jarrige
- INSERM UMR 861, I-STEM, AFM, 91100 Corbeil-Essonnes, France; Université Paris-Saclay, INSERM, University Evry, Institut des cellules Souches pour le Traitement et l'Etude des maladies Monogéniques, 91100 Corbeil-Essonnes, France; CECS/AFM, I-STEM, 91100 Corbeil-Essonnes, France
| | | | - Joao Correia
- COMPARE Advanced Imaging Facility, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Eva-Maria Frickel
- Institute of Microbiology and Infection, University of Birmingham, Birmingham B15 2TT, UK
| | - Maarten Hoogenkamp
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Douglas G Ward
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Laetitia Aubry
- INSERM UMR 861, I-STEM, AFM, 91100 Corbeil-Essonnes, France; Université Paris-Saclay, INSERM, University Evry, Institut des cellules Souches pour le Traitement et l'Etude des maladies Monogéniques, 91100 Corbeil-Essonnes, France
| | - Timothy Barrett
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; Department of Endocrinology, Birmingham Women's and Children's Hospital, Steelhouse Lane, Birmingham B4 6NH, UK
| | - Sovan Sarkar
- Institute of Cancer and Genomic Sciences, Institute of Biomedical Research, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| |
Collapse
|
40
|
Murray JH, Burgio AL, Beretta M, Hargett SR, Harris TE, Olzomer E, Grams RJ, Garcia CJ, Li C, Salamoun JM, Hoehn KL, Santos WL. Oxadiazolopyridine Derivatives as Efficacious Mitochondrial Uncouplers in the Prevention of Diet-Induced Obesity. J Med Chem 2023; 66:3876-3895. [PMID: 36882080 PMCID: PMC10167758 DOI: 10.1021/acs.jmedchem.2c01573] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Small-molecule mitochondrial uncouplers are gaining recognition as potential therapeutics for metabolic diseases such as obesity, diabetes, and nonalcoholic steatohepatitis (NASH). Specifically, heterocycles derived from BAM15, a potent and mitochondria-selective uncoupler, have yielded promising preclinical candidates that are efficacious in animal models of obesity and NASH. In this study, we report the structure-activity relationship studies of 6-amino-[1,2,5]oxadiazolo[3,4-b]pyridin-5-ol derivatives. Using oxygen consumption rate as a readout of mitochondrial uncoupling, we established 5-hydroxyoxadiazolopyridines as mild uncouplers. In particular, SHM115, which contains a pentafluoro aniline, had an EC50 value of 17 μM and exhibited 75% oral bioavailability. SHM115 treatment increased the energy expenditure and lowered the body fat mass in two diet-induced obesity mouse models, including an obesity prevention model and an obesity reversal model. Taken together, our findings demonstrate the therapeutic potential of mild mitochondrial uncouplers for the prevention of diet-induced obesity.
Collapse
Affiliation(s)
- Jacob H Murray
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Ariel L Burgio
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Martina Beretta
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales 2033, Australia
| | - Stefan R Hargett
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Thurl E Harris
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Ellen Olzomer
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales 2033, Australia
| | - R Justin Grams
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Christopher J Garcia
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Catherine Li
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales 2033, Australia
| | - Joseph M Salamoun
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Kyle L Hoehn
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, New South Wales 2033, Australia
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia 22908, United States
| | - Webster L Santos
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, Virginia 24061, United States
| |
Collapse
|
41
|
Harders AR, Arend C, Denieffe SC, Berger J, Dringen R. Endogenous Energy Stores Maintain a High ATP Concentration for Hours in Glucose-Depleted Cultured Primary Rat Astrocytes. Neurochem Res 2023; 48:2241-2252. [PMID: 36914795 PMCID: PMC10182151 DOI: 10.1007/s11064-023-03903-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/24/2023] [Accepted: 02/25/2023] [Indexed: 03/16/2023]
Abstract
Adenosine triphosphate (ATP) is the central energy currency of all cells. Cultured primary rat astrocytes contain a specific cellular ATP content of 27.9 ± 4.7 nmol/mg. During incubation in a glucose- and amino acid-free incubation buffer, this high cellular ATP content was maintained for at least 6 h, while within 24 h the levels of ATP declined to around 30% of the initial value without compromising cell viability. In contrast, cells exposed to 1 mM and 5 mM glucose maintained the initial high cellular ATP content for 24 and 72 h, respectively. The loss in cellular ATP content observed during a 24 h glucose-deprivation was fully prevented by the presence of glucose, fructose or mannose as well as by the mitochondrial substrates lactate, pyruvate, β-hydroxybutyrate or acetate. The high initial specific ATP content in glucose-starved astrocytes, was almost completely abolished within 30 min after application of the respiratory chain inhibitor antimycin A or the mitochondrial uncoupler BAM-15, while these inhibitors lowered in glucose-fed cells the ATP content only to 60% (BAM-15) and 40% (antimycin A) within 5 h. Inhibition of the mitochondrial pyruvate carrier by UK5099 alone or of mitochondrial fatty acid uptake by etomoxir alone hardly affected the high ATP content of glucose-deprived astrocytes during an incubation for 8 h, while the co-application of both inhibitors depleted cellular ATP levels almost completely within 5 h. These data underline the importance of mitochondrial metabolism for the ATP regeneration of astrocytes and demonstrate that the mitochondrial oxidation of pyruvate and fatty acids strongly contributes to the maintenance of a high ATP concentration in glucose-deprived astrocytes.
Collapse
Affiliation(s)
- Antonia Regina Harders
- Centre for Biomolecular Interactions Bremen Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany.,Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany
| | - Christian Arend
- Centre for Biomolecular Interactions Bremen Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany.,Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany
| | - Sadhbh Cynth Denieffe
- Centre for Biomolecular Interactions Bremen Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
| | - Julius Berger
- Centre for Biomolecular Interactions Bremen Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany
| | - Ralf Dringen
- Centre for Biomolecular Interactions Bremen Faculty 2 (Biology/Chemistry), University of Bremen, P.O. Box 330440, 28334, Bremen, Germany. .,Centre for Environmental Research and Sustainable Technologies, University of Bremen, Bremen, Germany.
| |
Collapse
|
42
|
β-lapachone-mediated WST1 Reduction as Indicator for the Cytosolic Redox Metabolism of Cultured Primary Astrocytes. Neurochem Res 2023; 48:2148-2160. [PMID: 36811754 PMCID: PMC10182120 DOI: 10.1007/s11064-023-03878-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 02/24/2023]
Abstract
Electron cycler-mediated extracellular reduction of the water-soluble tetrazolium salt 1 (WST1) is frequently used as tool for the determination of cell viability. We have adapted this method to monitor by determining the extracellular WST1 formazan accumulation the cellular redox metabolism of cultured primary astrocytes via the NAD(P)H-dependent reduction of the electron cycler β-lapachone by cytosolic NAD(P)H:quinone oxidoreductase 1 (NQO1). Cultured astrocytes that had been exposed to β-lapachone in concentrations of up to 3 µM remained viable and showed an almost linear extracellular accumulation of WST1 formazan for the first 60 min, while higher concentrations of β-lapachone caused oxidative stress and impaired cell metabolism. β-lapachone-mediated WST1 reduction was inhibited by the NQO1 inhibitors ES936 and dicoumarol in a concentration-dependent manner, with half-maximal inhibition observed at inhibitor concentrations of about 0.3 µM. β-lapachone-mediated WST1 reduction depended strongly on glucose availability, while mitochondrial substrates such as lactate, pyruvate or ketone bodies allowed only residual β-lapachone-mediated WST1 reduction. Accordingly, the mitochondrial respiratory chain inhibitors antimycin A and rotenone hardly affected astrocytic WST1 reduction. Both NADH and NADPH are known to supply electrons for reactions catalysed by cytosolic NQO1. Around 60% of the glucose-dependent β-lapachone-mediated WST1 reduction was prevented by the presence of the glucose-6-phosphate dehydrogenase inhibitor G6PDi-1, while the glyceraldehyde-3-phosphate dehydrogenase inhibitor iodoacetate had only little inhibitory potential. These data suggest that pentose phosphate pathway-generated NADPH, and not glycolysis-derived NADH, is the preferred electron source for cytosolic NQO1-catalysed reductions in cultured astrocytes.
Collapse
|
43
|
Jiang H, Greathouse RL, Tiche SJ, Zhao M, He B, Li Y, Li AM, Forgo B, Yip M, Li A, Shih M, Banuelos S, Zhou MN, Gruber JJ, Rankin EB, Hu Z, Shimada H, Chiu B, Ye J. Mitochondrial Uncoupling Induces Epigenome Remodeling and Promotes Differentiation in Neuroblastoma. Cancer Res 2023; 83:181-194. [PMID: 36318118 PMCID: PMC9851961 DOI: 10.1158/0008-5472.can-22-1029] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 08/23/2022] [Accepted: 10/28/2022] [Indexed: 11/22/2022]
Abstract
The Warburg effect is the major metabolic hallmark of cancer. According to Warburg himself, the consequence of the Warburg effect is cell dedifferentiation. Therefore, reversing the Warburg effect might be an approach to restore cell differentiation in cancer. In this study, we used a mitochondrial uncoupler, niclosamide ethanolamine (NEN), to activate mitochondrial respiration, which induced neural differentiation in neuroblastoma cells. NEN treatment increased the NAD+/NADH and pyruvate/lactate ratios and also the α-ketoglutarate/2-hydroxyglutarate (2-HG) ratio. Consequently, NEN treatment induced promoter CpG island demethylation and epigenetic landscape remodeling, activating the neural differentiation program. In addition, NEN treatment upregulated p53 but downregulated N-Myc and β-catenin signaling in neuroblastoma cells. Importantly, even under hypoxia, NEN treatment remained effective in inhibiting 2-HG generation, promoting DNA demethylation, and suppressing hypoxia-inducible factor signaling. Dietary NEN intervention reduced tumor growth rate, 2-HG levels, and expression of N-Myc and β-catenin in tumors in an orthotopic neuroblastoma mouse model. Integrative analysis indicated that NEN treatment upregulated favorable prognosis genes and downregulated unfavorable prognosis genes, which were defined using multiple neuroblastoma patient datasets. Altogether, these results suggest that mitochondrial uncoupling is an effective metabolic and epigenetic therapy for reversing the Warburg effect and inducing differentiation in neuroblastoma. SIGNIFICANCE Targeting cancer metabolism using the mitochondrial uncoupler niclosamide ethanolamine leads to methylome reprogramming and differentiation in neuroblastoma, providing a therapeutic opportunity to reverse the Warburg effect and suppress tumor growth. See related commentary by Byrne and Bell, p.167.
Collapse
Affiliation(s)
- Haowen Jiang
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Rachel L. Greathouse
- Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Sarah Jane Tiche
- Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Man Zhao
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Bo He
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Yang Li
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Albert M. Li
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA,Cancer Biology Program, Stanford University School of Medicine
| | - Balint Forgo
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Michaela Yip
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Allison Li
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Moriah Shih
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Selene Banuelos
- Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Meng-Ning Zhou
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Joshua J. Gruber
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center. Dallas, TX 75235, USA
| | - Erinn B. Rankin
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA
| | - Zhen Hu
- Olivia Consulting Service, Redwood City, CA 94063, USA
| | - Hiroyuki Shimada
- Department of Pathology, Stanford University, Stanford, CA 94305, USA
| | - Bill Chiu
- Department of Surgery, Stanford University School of Medicine, Stanford, CA 94305, USA,Stanford Cancer Institute, Stanford University School of Medicine. Stanford, CA 94305, US
| | - Jiangbin Ye
- Department of Radiation Oncology, Stanford University School of Medicine. Stanford, CA 94305, USA,Cancer Biology Program, Stanford University School of Medicine,Stanford Cancer Institute, Stanford University School of Medicine. Stanford, CA 94305, US,Correspondence to: Jiangbin Ye (), CCSR-S, Rm.1245, 269 Campus Drive, Stanford, CA 94305, Tel: 650-724-7459
| |
Collapse
|
44
|
Semenova MN, Tsyganov DV, Konyushkin LD, Semenov VV. Cytotoxic monoaryl furazanopyrazines with microtubule destabilizing activity in the sea urchin embryo model. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2022.100704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
|
45
|
Sehgal SA, Wu H, Sajid M, Sohail S, Ahsan M, Parveen G, Riaz M, Khan MS, Iqbal MN, Malik A. Pharmacological Progress of Mitophagy Regulation. Curr Neuropharmacol 2023; 21:1026-1041. [PMID: 36918785 PMCID: PMC10286582 DOI: 10.2174/1570159x21666230314140528] [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: 08/01/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 03/16/2023] Open
Abstract
With the advancement in novel drug discovery, biologically active compounds are considered pharmacological tools to understand complex biological mechanisms and the identification of potent therapeutic agents. Mitochondria boast a central role in different integral biological processes and mitochondrial dysfunction is associated with multiple pathologies. It is, therefore, prudent to target mitochondrial quality control mechanisms by using pharmacological approaches. However, there is a scarcity of biologically active molecules, which can interact with mitochondria directly. Currently, the chemical compounds used to induce mitophagy include oligomycin and antimycin A for impaired respiration and acute dissipation of mitochondrial membrane potential by using CCCP/FCCP, the mitochondrial uncouplers. These chemical probes alter the homeostasis of the mitochondria and limit our understanding of the energy regulatory mechanisms. Efforts are underway to find molecules that can bring about selective removal of defective mitochondria without compromising normal mitochondrial respiration. In this report, we have tried to summarize and status of the recently reported modulators of mitophagy.
Collapse
Affiliation(s)
- Sheikh Arslan Sehgal
- Department of Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, Punjab, Pakistan
- Department of Bioinformatics, University of Okara, Okara, Pakistan
| | - Hao Wu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, China
| | - Muhammad Sajid
- Department of Biotechnology, University of Okara, Okara, Pakistan
| | - Summar Sohail
- Department of Forestry, Kohsar University Murree, Pakistan
| | - Muhammad Ahsan
- Institute of Environmental and Agricultural Sciences, University of Okara, Okara, Punjab, Pakistan
| | | | - Mehreen Riaz
- Department of Zoology, Women University, Swabi, Pakistan
| | | | - Muhammad Nasir Iqbal
- Department of Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, Punjab, Pakistan
| | - Abbeha Malik
- Department of Bioinformatics, The Islamia University of Bahawalpur, Bahawalpur, Punjab, Pakistan
| |
Collapse
|
46
|
Lu Y, Li Z, Zhang S, Zhang T, Liu Y, Zhang L. Cellular mitophagy: Mechanism, roles in diseases and small molecule pharmacological regulation. Theranostics 2023; 13:736-766. [PMID: 36632220 PMCID: PMC9830443 DOI: 10.7150/thno.79876] [Citation(s) in RCA: 114] [Impact Index Per Article: 114.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/23/2022] [Indexed: 01/06/2023] Open
Abstract
Cellular mitophagy means that cells selectively wrap and degrade damaged mitochondria through an autophagy mechanism, thus maintaining mitochondria and intracellular homeostasis. In recent years, mitophagy has received increasing attention as a research hotspot related to the pathogenesis of clinical diseases, such as neurodegenerative diseases, cardiovascular diseases, cancer, metabolic diseases, and so on. It has been found that the regulation of mitophagy may become a new direction for the treatment of some diseases. In addition, numerous small molecule modulators of mitophagy have also been reported, which provides new opportunities to comprehend the procedure and potential of therapeutic development. Taken together, in this review, we summarize current understanding of the mechanism of mitophagy, discuss the roles of mitophagy and its relationship with diseases, introduce the existing small-molecule pharmacological modulators of mitophagy and further highlight the significance of their development.
Collapse
Affiliation(s)
- Yingying Lu
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Zhijia Li
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Shuangqian Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Tongtong Zhang
- The Center of Gastrointestinal and Minimally Invasive Surgery, Department of General Surgery, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu 610031, China,Medical Research Center, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu 610031, China
| | - Yanjun Liu
- The Center of Gastrointestinal and Minimally Invasive Surgery, Department of General Surgery, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu 610031, China,Medical Research Center, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu 610031, China,✉ Corresponding authors: Yanjun Liu, E-mail: ; Lan Zhang, E-mail:
| | - Lan Zhang
- Sichuan Engineering Research Center for Biomimetic Synthesis of Natural Drugs, School of Life Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China,✉ Corresponding authors: Yanjun Liu, E-mail: ; Lan Zhang, E-mail:
| |
Collapse
|
47
|
Consumption and Metabolism of Extracellular Pyruvate by Cultured Rat Brain Astrocytes. Neurochem Res 2022; 48:1438-1454. [PMID: 36495387 PMCID: PMC10066139 DOI: 10.1007/s11064-022-03831-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 12/14/2022]
Abstract
AbstractBrain astrocytes are considered as glycolytic cell type, but these cells also produce ATP via mitochondrial oxidative phosphorylation. Exposure of cultured primary astrocytes in a glucose-free medium to extracellular substrates that are known to be metabolised by mitochondrial pathways, including pyruvate, lactate, beta-hydroxybutyrate, alanine and acetate, revealed that among the substrates investigated extracellular pyruvate was most efficiently consumed by astrocytes. Extracellular pyruvate was consumed by the cells almost proportional to time over hours in a concentration-dependent manner with apparent Michaelis–Menten kinetics [Km = 0.6 ± 0.1 mM, Vmax = 5.1 ± 0.8 nmol/(min × mg protein)]. The astrocytic consumption of pyruvate was strongly impaired in the presence of the monocarboxylate transporter 1 (MCT1) inhibitor AR-C155858 or by application of a 10-times excess of the MCT1 substrates lactate or beta-hydroxybutyrate. Pyruvate consumption by viable astrocytes was inhibited in the presence of UK5099, an inhibitor of the mitochondrial pyruvate carrier, or after application of the respiratory chain inhibitor antimycin A. In contrast, the mitochondrial uncoupler BAM15 strongly accelerated cellular pyruvate consumption. Lactate and alanine accounted after 3 h of incubation with pyruvate for around 60% and 10%, respectively, of the pyruvate consumed by the cells. These results demonstrate that consumption of extracellular pyruvate by astrocytes involves uptake via MCT1 and that the velocity of pyruvate consumption is strongly modified by substances that affect the entry of pyruvate into mitochondria or the activity of mitochondrial respiration.
Collapse
|
48
|
Cho I, Song HO, Ji HE, Yang S, Cho JH. BAM15 Relieves Neurodegeneration in Aged Caenorhabditis elegans and Extends Lifespan. Metabolites 2022; 12:1129. [PMID: 36422268 PMCID: PMC9698188 DOI: 10.3390/metabo12111129] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 09/01/2023] Open
Abstract
BAM15 was recently screened as a protonophore uncoupler specifically for the mitochondrial membrane but not the plasma membrane. It is equally as potent as FCCP, but less toxic. Previously, mitochondrial uncoupling via DNP alleviates neurodegeneration in the nematode Caenorhabditis elegans during aging. Therefore, we investigated whether BAM15 uncouplers could phenotypically and functionally reduce neuronal defects in aged nematodes. We observed green fluorescence protein-tagged mechanosensory neurons and performed touch and chemotaxis assays during aging. Wild-type animals treated with both 50 µM BAM15 and 10 µM DNP showed reduced mechanosensory neuronal defects during aging, which correlates with the maintenance of touch responses and short-term memory during aging. Uncoupler mutant ucp-4 also responded the same way as the wild-type, reducing neurodegeneration in 50 µM BAM15 and 10 µM DNP-treated animals compared to the DMSO control. These results suggest that 50 µM BAM15 alleviates neurodegeneration phenotypically and functionally in C. elegans during aging, potentially through mitochondrial uncoupling. In accordance with the preserved neuronal shape and function in aged C. elegans, 50 µM BAM15 extended the mean lifespan of both wild-type and ucp-4 mutants.
Collapse
Affiliation(s)
- Injeong Cho
- Department of Biology Education, College of Education, Chosun University, Gwangju 61452, Republic of Korea
| | - Hyun-Ok Song
- Department of Infection Biology, Wonkwang University School of Medicine, Iksan 54538, Republic of Korea
| | - Ha Eun Ji
- Department of Biology Education, College of Education, Chosun University, Gwangju 61452, Republic of Korea
| | - Sungtae Yang
- Department of Microbiology, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea
| | - Jeong Hoon Cho
- Department of Biology Education, College of Education, Chosun University, Gwangju 61452, Republic of Korea
| |
Collapse
|
49
|
Kim CW, Lee HJ, Ahn D, Go RE, Choi KC. Establishment of a platform for measuring mitochondrial oxygen consumption rate for cardiac mitochondrial toxicity. Toxicol Res 2022; 38:511-522. [PMID: 36277363 PMCID: PMC9532483 DOI: 10.1007/s43188-022-00136-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/12/2022] [Accepted: 04/14/2022] [Indexed: 10/18/2022] Open
Abstract
The heart has an abundance of mitochondria since cardiac muscles require copious amounts of energy for providing continuous blood through the circulatory system, thereby implying that myocardial function is largely reliant on mitochondrial energy. Thus, cardiomyocytes are susceptible to mitochondrial dysfunction and are likely targets of mitochondrial toxic drugs. Various methods have been developed to evaluate mitochondrial toxicity by evaluating toxicological mechanisms, but an optimized and standardized assay for cardiomyocytes remains unmet. We have therefore attempted to standardize the evaluation system for determining cardiac mitochondrial toxicity, using AC16 human and H9C2 rat cardiomyocytes. Three clinically administered drugs (acetaminophen, amiodarone, and valproic acid) and two anticancer drugs (doxorubicin and tamoxifen) which are reported to have mitochondrial effects, were applied in this study. The oxygen consumption rate (OCR), which directly reflects mitochondrial function, and changes in mRNA levels of mitochondrial respiratory complex I to complex V, were analyzed. Our results reveal that exposure to all five drugs results in a concentration-dependent decrease in the basal and maximal levels of OCR in AC16 cells and H9C2 cells. In particular, marked reduction in the OCR was observed after treatment with doxorubicin. The reduction in OCR after exposure to mitochondrial toxic drugs was found to be associated with reduced mRNA expression in the mitochondrial respiratory complexes, suggesting that the cardiac mitochondrial toxicity of drugs is majorly due to dysfunction of mitochondrial respiration. Based on the results of this study, we established and standardized a protocol to measure OCR in cardiomyocytes. We expect that this standardized evaluation system for mitochondrial toxicity can be applied as basic data for establishing a screening platform to evaluate cardiac mitochondrial toxicity of drugs, during the developmental stage of new drug discovery.
Collapse
Affiliation(s)
- Cho-Won Kim
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644 Republic of Korea
| | - Hee-Jin Lee
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644 Republic of Korea
| | - Dohee Ahn
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644 Republic of Korea
| | - Ryeo-Eun Go
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644 Republic of Korea
| | - Kyung-Chul Choi
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644 Republic of Korea
| |
Collapse
|
50
|
Dai Y, Santiago-Rivera JA, Hargett S, Salamoun JM, Hoehn KL, Santos WL. Conversion of oxadiazolo[3,4-b]pyrazines to imidazo[4,5-b]pyrazines via a tandem reduction-cyclization sequence generates new mitochondrial uncouplers. Bioorg Med Chem Lett 2022; 73:128912. [PMID: 35907607 DOI: 10.1016/j.bmcl.2022.128912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/14/2022] [Accepted: 07/24/2022] [Indexed: 11/02/2022]
Abstract
We report new mitochondrial uncouplers derived from the conversion of [1,2,5]oxadiazolo[3,4-b]pyrazines to 1H-imidazo[4,5-b]pyrazines. The in situ Fe-mediated reduction of the oxadiazole fragment followed by cyclization gave access to imidazopyrazines in moderate to good yields. A selection of orthoesters also allowed functionalization on the 2-position of the imidazole ring. This method afforded a variety of imidazopyrazine derivatives with varying substitution on the 2, 5 and 6 positions. Our studies suggest that both a 2-trifluoromethyl group and N-methylation are crucial for mitochondrial uncoupling capacity.
Collapse
Affiliation(s)
- Yumin Dai
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA 24061, United States
| | - José A Santiago-Rivera
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA 24061, United States
| | - Stefan Hargett
- Departments of Pharmacology and Medicine, University of Virginia, Charlottesville, VA 22908, United States
| | - Joseph M Salamoun
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA 24061, United States
| | - Kyle L Hoehn
- Departments of Pharmacology and Medicine, University of Virginia, Charlottesville, VA 22908, United States; School of Biotechnology and Biomolecular Sciences, University of New South Wales, Kensington, NSW 2033, Australia
| | - Webster L Santos
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA 24061, United States.
| |
Collapse
|