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Vilas-Boas EA, Kowaltowski AJ. Mitochondrial redox state, bioenergetics, and calcium transport in caloric restriction: A metabolic nexus. Free Radic Biol Med 2024; 219:195-214. [PMID: 38677486 DOI: 10.1016/j.freeradbiomed.2024.04.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/22/2024] [Accepted: 04/24/2024] [Indexed: 04/29/2024]
Abstract
Mitochondria congregate central reactions in energy metabolism, many of which involve electron transfer. As such, they are expected to both respond to changes in nutrient supply and demand and also provide signals that integrate energy metabolism intracellularly. In this review, we discuss how mitochondrial bioenergetics and reactive oxygen species production is impacted by dietary interventions that change nutrient availability and impact on aging, such as calorie restriction. We also discuss how dietary interventions alter mitochondrial Ca2+ transport, regulating both mitochondrial and cytosolic processes modulated by this ion. Overall, a plethora of literature data support the idea that mitochondrial oxidants and calcium transport act as integrating signals coordinating the response to changes in nutritional supply and demand in cells, tissues, and animals.
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Affiliation(s)
- Eloisa A Vilas-Boas
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, Brazil.
| | - Alicia J Kowaltowski
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Brazil.
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2
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Helgudóttir SS, Mørkholt AS, Lichota J, Bruun-Nyzell P, Andersen MC, Kristensen NMJ, Johansen AK, Zinn MR, Jensdóttir HM, Nieland JDV. Rethinking neurodegenerative diseases: neurometabolic concept linking lipid oxidation to diseases in the central nervous system. Neural Regen Res 2024; 19:1437-1445. [PMID: 38051885 PMCID: PMC10883494 DOI: 10.4103/1673-5374.387965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/21/2023] [Indexed: 12/07/2023] Open
Abstract
ABSTRACT Currently, there is a lack of effective medicines capable of halting or reversing the progression of neurodegenerative disorders, including amyotrophic lateral sclerosis, Parkinson's disease, multiple sclerosis, or Alzheimer's disease. Given the unmet medical need, it is necessary to reevaluate the existing paradigms of how to target these diseases. When considering neurodegenerative diseases from a systemic neurometabolic perspective, it becomes possible to explain the shared pathological features. This innovative approach presented in this paper draws upon extensive research conducted by the authors and researchers worldwide. In this review, we highlight the importance of metabolic mitochondrial dysfunction in the context of neurodegenerative diseases. We provide an overview of the risk factors associated with developing neurodegenerative disorders, including genetic, epigenetic, and environmental factors. Additionally, we examine pathological mechanisms implicated in these diseases such as oxidative stress, accumulation of misfolded proteins, inflammation, demyelination, death of neurons, insulin resistance, dysbiosis, and neurotransmitter disturbances. Finally, we outline a proposal for the restoration of mitochondrial metabolism, a crucial aspect that may hold the key to facilitating curative therapeutic interventions for neurodegenerative disorders in forthcoming advancements.
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Affiliation(s)
| | | | - Jacek Lichota
- Molecular Pharmacology Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | | | - Mads Christian Andersen
- Molecular Pharmacology Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Nanna Marie Juhl Kristensen
- Molecular Pharmacology Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Amanda Krøger Johansen
- Molecular Pharmacology Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Mikela Reinholdt Zinn
- Molecular Pharmacology Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Hulda Maria Jensdóttir
- Molecular Pharmacology Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - John Dirk Vestergaard Nieland
- 2N Pharma ApS, NOVI Science Park, Aalborg, Denmark
- Molecular Pharmacology Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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3
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Kang Z, Zhang Z, Li J, Deng K, Wang F, Fan Y. Mechanistic of AMPK/ACC2 regulating myoblast differentiation by fatty acid oxidation of goat. Int J Biol Macromol 2024; 270:132243. [PMID: 38744369 DOI: 10.1016/j.ijbiomac.2024.132243] [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: 01/29/2024] [Revised: 04/15/2024] [Accepted: 05/07/2024] [Indexed: 05/16/2024]
Abstract
Myoblast differentiation depends on fatty acid oxidation (FAO),and its rate-limiting enzyme acetyl-CoA carboxylase 2 (ACC2) participate in the regulation skeletal muscle development. However, the precise regulatory mechanism is still unknown. Using previous RNA-sequencing data from our laboratory, we explored the effect of ACC2 on myoblast differentiation, as a candidate gene, since its expression is higher in myoblasts of lamb (first day of age) than that of the fetus (75th day of pregnancy). Our findings show that siACC2 inhibited myoblast proliferation, promoted differentiation, and boosted mitochondrial and fatty acid oxidation activities. The effect of ACC2 on goat muscle cell differentiation was modulated by Etomoxir, a CPT1A inhibitor. Notably, the AMPK/ACC2 pathway was found to regulate fatty acid oxidation and goat muscle cell differentiation. Inhibiting the AMPK/ACC2 pathway significantly reduced CPT1A expression. These findings indicate that AMPK/ACC2 regulate goat myoblast differentiation via fatty acid oxidation, contributing to understanding the mechanism of goat skeletal muscle development.
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Affiliation(s)
- Ziqi Kang
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhen Zhang
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Juan Li
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Kaiping Deng
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Feng Wang
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Yixuan Fan
- Institute of Sheep and Goat Science, Nanjing Agricultural University, Nanjing 210095, China.
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4
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Deja S, Fletcher JA, Kim CW, Kucejova B, Fu X, Mizerska M, Villegas M, Pudelko-Malik N, Browder N, Inigo-Vollmer M, Menezes CJ, Mishra P, Berglund ED, Browning JD, Thyfault JP, Young JD, Horton JD, Burgess SC. Hepatic malonyl-CoA synthesis restrains gluconeogenesis by suppressing fat oxidation, pyruvate carboxylation, and amino acid availability. Cell Metab 2024; 36:1088-1104.e12. [PMID: 38447582 PMCID: PMC11081827 DOI: 10.1016/j.cmet.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 12/10/2023] [Accepted: 02/09/2024] [Indexed: 03/08/2024]
Abstract
Acetyl-CoA carboxylase (ACC) promotes prandial liver metabolism by producing malonyl-CoA, a substrate for de novo lipogenesis and an inhibitor of CPT-1-mediated fat oxidation. We report that inhibition of ACC also produces unexpected secondary effects on metabolism. Liver-specific double ACC1/2 knockout (LDKO) or pharmacologic inhibition of ACC increased anaplerosis, tricarboxylic acid (TCA) cycle intermediates, and gluconeogenesis by activating hepatic CPT-1 and pyruvate carboxylase flux in the fed state. Fasting should have marginalized the role of ACC, but LDKO mice maintained elevated TCA cycle intermediates and preserved glycemia during fasting. These effects were accompanied by a compensatory induction of proteolysis and increased amino acid supply for gluconeogenesis, which was offset by increased protein synthesis during feeding. Such adaptations may be related to Nrf2 activity, which was induced by ACC inhibition and correlated with fasting amino acids. The findings reveal unexpected roles for malonyl-CoA synthesis in liver and provide insight into the broader effects of pharmacologic ACC inhibition.
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Affiliation(s)
- Stanislaw Deja
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Justin A Fletcher
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Clinical Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Chai-Wan Kim
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Blanka Kucejova
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Xiaorong Fu
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Monika Mizerska
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Morgan Villegas
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Natalia Pudelko-Malik
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Biochemistry, Molecular Biology and Biotechnology, Faculty of Chemistry, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Nicholas Browder
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Melissa Inigo-Vollmer
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Cameron J Menezes
- Children's Research Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Prashant Mishra
- Children's Research Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Eric D Berglund
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - Jeffrey D Browning
- Department of Clinical Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA
| | - John P Thyfault
- Departments of Cell Biology and Physiology, Internal Medicine and KU Diabetes Institute, Kansas Medical Center, Kansas City, KS, USA
| | - Jamey D Young
- Department of Chemical and Biomolecular Engineering, Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37235, USA
| | - Jay D Horton
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA.
| | - Shawn C Burgess
- Center for Human Nutrition, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA; Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390-9046, USA.
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5
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Regulation of mitochondrial fission by fatty acyl-coenzyme A. Nat Cell Biol 2024; 26:672-673. [PMID: 38653841 DOI: 10.1038/s41556-024-01406-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
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6
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Liu A, Kage F, Abdulkareem AF, Aguirre-Huamani MP, Sapp G, Aydin H, Higgs HN. Fatty acyl-coenzyme A activates mitochondrial division through oligomerization of MiD49 and MiD51. Nat Cell Biol 2024; 26:731-744. [PMID: 38594588 DOI: 10.1038/s41556-024-01400-3] [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: 07/10/2023] [Accepted: 03/05/2024] [Indexed: 04/11/2024]
Abstract
Mitochondrial fission occurs in many cellular processes, but the regulation of fission is poorly understood. We show that long-chain acyl-coenzyme A (LCACA) activates two related mitochondrial fission proteins, MiD49 and MiD51, by inducing their oligomerization, which activates their ability to stimulate the DRP1 GTPase. The 1:1 stoichiometry of LCACA:MiD in the oligomer suggests interaction in the previously identified nucleotide-binding pocket, and a point mutation in this pocket reduces LCACA binding and LCACA-induced oligomerization for MiD51. In cells, this LCACA binding mutant does not assemble into puncta on mitochondria or rescue MiD49/51 knockdown effects on mitochondrial length and DRP1 recruitment. Furthermore, cellular treatment with BSA-bound oleic acid, which causes increased LCACA, promotes mitochondrial fission in an MiD49/51-dependent manner. These results suggest that LCACA is an endogenous ligand for MiDs, inducing mitochondrial fission and providing a potential mechanism for fatty-acid-induced mitochondrial division. Finally, MiD49 or MiD51 oligomers synergize with Mff, but not with actin filaments, in DRP1 activation, suggesting distinct pathways for DRP1 activation.
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Affiliation(s)
- Ao Liu
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Frieda Kage
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Asan F Abdulkareem
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Mac Pholo Aguirre-Huamani
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA
| | - Gracie Sapp
- Department of Biochemistry, University of Colorado Boulder, Boulder, CO, USA
| | - Halil Aydin
- Department of Biochemistry, University of Colorado Boulder, Boulder, CO, USA
| | - Henry N Higgs
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth College, Hanover, NH, USA.
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7
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Schulman-Geltzer EB, Fulghum KL, Singhal RA, Hill BG, Collins HE. Cardiac mitochondrial metabolism during pregnancy and the postpartum period. Am J Physiol Heart Circ Physiol 2024; 326:H1324-H1335. [PMID: 38551485 DOI: 10.1152/ajpheart.00127.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/20/2024] [Accepted: 03/26/2024] [Indexed: 05/02/2024]
Abstract
The goal of the present study was to characterize changes in mitochondrial respiration in the maternal heart during pregnancy and after birth. Timed pregnancy studies were performed in 12-wk-old female FVB/NJ mice, and cardiac mitochondria were isolated from the following groups of mice: nonpregnant (NP), midpregnancy (MP), late pregnancy (LP), and 1-wk postbirth (PB). Similar to our previous studies, we observed increased heart size during all stages of pregnancy (e.g., MP and LP) and postbirth (e.g., PB) compared with NP mice. Differential cardiac gene and protein expression analyses revealed changes in several mitochondrial transcripts at LP and PB, including several mitochondrial complex subunits and members of the Slc family, important for mitochondrial substrate transport. Respirometry revealed that pyruvate- and glutamate-supported state 3 respiration was significantly higher in PB vs. LP mitochondria, with respiratory control ratio (RCR) values higher in PB mitochondria. In addition, we found that PB mitochondria respired more avidly when given 3-hydroxybutyrate (3-OHB) than mitochondria from NP, MP, and LP hearts, with no differences in RCR. These increases in respiration in PB hearts occurred independent of changes in mitochondrial yield but were associated with higher abundance of 3-hydroxybutyrate dehydrogenase 1. Collectively, these findings suggest that, after birth, maternal cardiac mitochondria have an increased capacity to use 3-OHB, pyruvate, and glutamate as energy sources; however, increases in mitochondrial efficiency in the postpartum heart appear limited to carbohydrate and amino acid metabolism.NEW & NOTEWORTHY Few studies have detailed the physiological adaptations that occur in the maternal heart. We and others have shown that pregnancy-induced cardiac growth is associated with significant changes in cardiac metabolism. Here, we examined mitochondrial respiration and substrate preference in isolated mitochondria from the maternal heart. We show that following birth, cardiac mitochondria are "primed" to respire on carbohydrate, amino acid, and ketone bodies. However, heightened respiratory efficiency is observed only with carbohydrate and amino acid sources. These results suggest that significant changes in mitochondrial respiration occur in the maternal heart in the postpartum period.
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Affiliation(s)
- Emily B Schulman-Geltzer
- Division of Environmental Medicine, Department of Medicine, Center for Cardiometabolic ScienceChristina Lee Brown Envirome Institute, University of Louisville, Louisville, Kentucky, United States
| | - Kyle L Fulghum
- Division of Environmental Medicine, Department of Medicine, Center for Cardiometabolic ScienceChristina Lee Brown Envirome Institute, University of Louisville, Louisville, Kentucky, United States
| | - Richa A Singhal
- Division of Environmental Medicine, Department of Medicine, Center for Cardiometabolic ScienceChristina Lee Brown Envirome Institute, University of Louisville, Louisville, Kentucky, United States
| | - Bradford G Hill
- Division of Environmental Medicine, Department of Medicine, Center for Cardiometabolic ScienceChristina Lee Brown Envirome Institute, University of Louisville, Louisville, Kentucky, United States
| | - Helen E Collins
- Division of Environmental Medicine, Department of Medicine, Center for Cardiometabolic ScienceChristina Lee Brown Envirome Institute, University of Louisville, Louisville, Kentucky, United States
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8
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Dashti Z, Yousefi Z, Kiani P, Taghizadeh M, Maleki MH, Borji M, Vakili O, Shafiee SM. Autophagy and the unfolded protein response shape the non-alcoholic fatty liver landscape: decoding the labyrinth. Metabolism 2024; 154:155811. [PMID: 38309690 DOI: 10.1016/j.metabol.2024.155811] [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: 11/28/2023] [Revised: 01/23/2024] [Accepted: 01/28/2024] [Indexed: 02/05/2024]
Abstract
The incidence of nonalcoholic fatty liver disease (NAFLD) is on the rise, mirroring a global surge in diabetes and metabolic syndrome, as its major leading causes. NAFLD represents a spectrum of liver disorders, ranging from nonalcoholic fatty liver (NAFL) to nonalcoholic steatohepatitis (NASH), which can potentially progress to cirrhosis and hepatocellular carcinoma (HCC). Mechanistically, we know the unfolded protein response (UPR) as a protective cellular mechanism, being triggered under circumstances of endoplasmic reticulum (ER) stress. The hepatic UPR is turned on in a broad spectrum of liver diseases, including NAFLD. Recent data also defines molecular mechanisms that may underlie the existing correlation between UPR activation and NAFLD. More interestingly, subsequent studies have demonstrated an additional mechanism, i.e. autophagy, to be involved in hepatic steatosis, and thus NAFLD pathogenesis, principally by regulating the insulin sensitivity, hepatocellular injury, innate immunity, fibrosis, and carcinogenesis. All these findings suggest possible mechanistic roles for autophagy in the progression of NAFLD and its complications. Both UPR and autophagy are dynamic and interconnected fluxes that act as protective responses to minimize the harmful effects of hepatic lipid accumulation, as well as the ER stress during NAFLD. The functions of UPR and autophagy in the liver, together with findings of decreased hepatic autophagy in correlation with conditions that predispose to NAFLD, such as obesity and aging, suggest that autophagy and UPR, alone or combined, may be novel therapeutic targets against the disease. In this review, we discuss the current evidence on the interplay between autophagy and the UPR in connection to the NAFLD pathogenesis.
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Affiliation(s)
- Zahra Dashti
- Department of Genetics, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Zeynab Yousefi
- Department of Clinical Biochemistry, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Pouria Kiani
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Motahareh Taghizadeh
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hasan Maleki
- Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Borji
- Department of Clinical Biochemistry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Omid Vakili
- Department of Clinical Biochemistry, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran; Autophagy Research Center, Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Sayed Mohammad Shafiee
- Autophagy Research Center, Department of Clinical Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
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9
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Zhou Z, Ma A, Moore TM, Wolf DM, Yang N, Tran P, Segawa M, Strumwasser AR, Ren W, Fu K, Wanagat J, van der Bliek AM, Crosbie-Watson R, Liesa M, Stiles L, Acin-Perez R, Mahata S, Shirihai O, Goodarzi MO, Handzlik M, Metallo CM, Walker DW, Hevener AL. Drp1 controls complex II assembly and skeletal muscle metabolism by Sdhaf2 action on mitochondria. SCIENCE ADVANCES 2024; 10:eadl0389. [PMID: 38569044 PMCID: PMC10990287 DOI: 10.1126/sciadv.adl0389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 02/28/2024] [Indexed: 04/05/2024]
Abstract
The dynamin-related guanosine triphosphatase, Drp1 (encoded by Dnm1l), plays a central role in mitochondrial fission and is requisite for numerous cellular processes; however, its role in muscle metabolism remains unclear. Here, we show that, among human tissues, the highest number of gene correlations with DNM1L is in skeletal muscle. Knockdown of Drp1 (Drp1-KD) promoted mitochondrial hyperfusion in the muscle of male mice. Reduced fatty acid oxidation and impaired insulin action along with increased muscle succinate was observed in Drp1-KD muscle. Muscle Drp1-KD reduced complex II assembly and activity as a consequence of diminished mitochondrial translocation of succinate dehydrogenase assembly factor 2 (Sdhaf2). Restoration of Sdhaf2 normalized complex II activity, lipid oxidation, and insulin action in Drp1-KD myocytes. Drp1 is critical in maintaining mitochondrial complex II assembly, lipid oxidation, and insulin sensitivity, suggesting a mechanistic link between mitochondrial morphology and skeletal muscle metabolism, which is clinically relevant in combatting metabolic-related diseases.
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Affiliation(s)
- Zhenqi Zhou
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alice Ma
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Timothy M. Moore
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Dane M. Wolf
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Clinical Neurosciences, School of Clinical Medicine, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Nicole Yang
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Peter Tran
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mayuko Segawa
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- MRC Mitochondrial Biology Unit, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK
| | - Alexander R. Strumwasser
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Wenjuan Ren
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kai Fu
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jonathan Wanagat
- Division of Geriatrics, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Veterans Administration Greater Los Angeles Healthcare System, Los Angeles, CA 90073, USA
| | | | - Rachelle Crosbie-Watson
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Center for Duchenne Muscular Dystrophy, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Marc Liesa
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Linsey Stiles
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Rebecca Acin-Perez
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sushil Mahata
- VA San Diego Healthcare System, San Diego, CA 92161, USA
- Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Orian Shirihai
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Mark O. Goodarzi
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90095, USA
| | - Michal Handzlik
- Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Christian M. Metallo
- Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA 92093, USA
- Molecular and Cellular Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - David W. Walker
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Andrea L. Hevener
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Iris Cantor UCLA Women’s Health Research Center, University of California, Los Angeles, Los Angeles, CA 90095, USA
- Department of Medicine and VA Greater Los Angeles Healthcare System GRECC, Los Angeles, CA 90073, USA
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10
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Ma XM, Geng K, Wang P, Jiang Z, Law BYK, Xu Y. MCT4-dependent lactate transport: a novel mechanism for cardiac energy metabolism injury and inflammation in type 2 diabetes mellitus. Cardiovasc Diabetol 2024; 23:96. [PMID: 38486199 PMCID: PMC10941417 DOI: 10.1186/s12933-024-02178-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 02/24/2024] [Indexed: 03/17/2024] Open
Abstract
Diabetic cardiomyopathy (DCM) is a major contributor to mortality in diabetic patients, characterized by a multifaceted pathogenesis and limited therapeutic options. While lactate, a byproduct of glycolysis, is known to be significantly elevated in type 2 diabetes, its specific role in DCM remains uncertain. This study reveals an abnormal upregulation of monocarboxylate transporter 4 (MCT4) on the plasma membrane of cardiomyocytes in type 2 diabetes, leading to excessive lactate efflux from these cells. The disruption in lactate transport homeostasis perturbs the intracellular lactate-pyruvate balance in cardiomyocytes, resulting in oxidative stress and inflammatory responses that exacerbate myocardial damage. Additionally, our findings suggest increased lactate efflux augments histone H4K12 lactylation in macrophages, facilitating inflammatory infiltration within the microenvironment. In vivo experiments have demonstrated that inhibiting MCT4 effectively alleviates myocardial oxidative stress and pathological damage, reduces inflammatory macrophage infiltration, and enhances cardiac function in type 2 diabetic mice. Furthermore, a clinical prediction model has been established, demonstrating a notable association between peripheral blood lactate levels and diastolic dysfunction in individuals with type 2 diabetes. This underscores the potential of lactate as a prognostic biomarker for DCM. Ultimately, our findings highlight the pivotal involvement of MCT4 in the dysregulation of cardiac energy metabolism and macrophage-mediated inflammation in type 2 diabetes. These insights offer novel perspectives on the pathogenesis of DCM and pave the way for the development of targeted therapeutic strategies against this debilitating condition.
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Affiliation(s)
- Xiu Mei Ma
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China
| | - Kang Geng
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China
| | - Peng Wang
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China
| | - Zongzhe Jiang
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China
| | - Betty Yuen-Kwan Law
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
| | - Yong Xu
- Faculty of Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, 999078, Macau, People's Republic of China.
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, People's Republic of China.
- Cardiovascular and Metabolic Diseases Key Laboratory of Luzhou, Luzhou, 646000, Sichuan, People's Republic of China.
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, People's Republic of China.
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11
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Smith HE, Mackenzie AM, Seddon C, Mould R, Kalampouka I, Malakar P, Needham SR, Beis K, Bell JD, Nunn A, Botchway SW. The use of NADH anisotropy to investigate mitochondrial cristae alignment. Sci Rep 2024; 14:5980. [PMID: 38472304 DOI: 10.1038/s41598-024-55780-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Life may be expressed as the flow of electrons, protons, and other ions, resulting in large potential difference. It is also highly photo-sensitive, as a large proportion of the redox capable molecules it relies on are chromophoric. It is thus suggestive that a key organelle in eukaryotes, the mitochondrion, constantly adapt their morphology as part of the homeostatic process. Studying unstained in vivo nano-scale structure in live cells is technically very challenging. One option is to study a central electron carrier in metabolism, reduced nicotinamide adenine dinucleotide (NADH), which is fluorescent and mostly located within mitochondria. Using one and two-photon absorption (340-360 nm and 730 nm, respectively), fluorescence lifetime imaging and anisotropy spectroscopy of NADH in solution and in live cells, we show that mitochondria do indeed appear to be aligned and exhibit high anisotropy (asymmetric directionality). Aqueous solution of NADH showed an anisotropy of ~ 0.20 compared to fluorescein or coumarin of < 0.1 and 0.04 in water respectively and as expected for small organic molecules. The anisotropy of NADH also increased further to 0.30 in the presence of proteins and 0.42 in glycerol (restricted environment) following two-photon excitation, suggesting more ordered structures. Two-photon NADH fluorescence imaging of Michigan Cancer Foundation-7 (MCF7) also showed strong anisotropy of 0.25 to 0.45. NADH has a quantum yield of fluorescence of 2% compared to more than 40% for photoionisation (electron generation), when exposed to light at 360 nm and below. The consequence of such highly ordered and directional NADH patterns with respect to electron ejection upon ultra-violet (UV) excitation could be very informative-especially in relation to ascertaining the extent of quantum effects in biology, including electron and photonic cascade, communication and modulation of effects such as spin and tunnelling.
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Affiliation(s)
- Holly E Smith
- UKRI, STFC, Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK
| | - Alasdair M Mackenzie
- UKRI, STFC, Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK
| | - Chloe Seddon
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire, OX11 0FA, UK
| | - Rhys Mould
- School of Life Sciences, Research Centre for Optimal Health, University of Westminster, London, W1W 6UW, UK
| | - Ifi Kalampouka
- School of Life Sciences, Research Centre for Optimal Health, University of Westminster, London, W1W 6UW, UK
| | - Partha Malakar
- UKRI, STFC, Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK
| | - Sarah R Needham
- UKRI, STFC, Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK
| | - Konstantinos Beis
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire, OX11 0FA, UK
| | - Jimmy D Bell
- School of Life Sciences, Research Centre for Optimal Health, University of Westminster, London, W1W 6UW, UK
| | - Alistair Nunn
- School of Life Sciences, Research Centre for Optimal Health, University of Westminster, London, W1W 6UW, UK
| | - Stanley W Botchway
- UKRI, STFC, Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, UK.
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12
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Kang SWS, Cunningham RP, Miller CB, Brown LA, Cultraro CM, Harned A, Narayan K, Hernandez J, Jenkins LM, Lobanov A, Cam M, Porat-Shliom N. A spatial map of hepatic mitochondria uncovers functional heterogeneity shaped by nutrient-sensing signaling. Nat Commun 2024; 15:1799. [PMID: 38418824 PMCID: PMC10902380 DOI: 10.1038/s41467-024-45751-9] [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: 04/24/2023] [Accepted: 02/04/2024] [Indexed: 03/02/2024] Open
Abstract
In the liver, mitochondria are exposed to different concentrations of nutrients due to their spatial positioning across the periportal and pericentral axis. How the mitochondria sense and integrate these signals to respond and maintain homeostasis is not known. Here, we combine intravital microscopy, spatial proteomics, and functional assessment to investigate mitochondrial heterogeneity in the context of liver zonation. We find that periportal and pericentral mitochondria are morphologically and functionally distinct; beta-oxidation is elevated in periportal regions, while lipid synthesis is predominant in the pericentral mitochondria. In addition, comparative phosphoproteomics reveals spatially distinct patterns of mitochondrial composition and potential regulation via phosphorylation. Acute pharmacological modulation of nutrient sensing through AMPK and mTOR shifts mitochondrial phenotypes in the periportal and pericentral regions, linking nutrient gradients across the lobule and mitochondrial heterogeneity. This study highlights the role of protein phosphorylation in mitochondrial structure, function, and overall homeostasis in hepatic metabolic zonation. These findings have important implications for liver physiology and disease.
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Affiliation(s)
- Sun Woo Sophie Kang
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Rory P Cunningham
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Colin B Miller
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Lauryn A Brown
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Constance M Cultraro
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Adam Harned
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Cancer Research Technology Programs, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Kedar Narayan
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
- Cancer Research Technology Programs, Frederick National Laboratory for Cancer Research, Frederick, MD, USA
| | - Jonathan Hernandez
- Surgical Oncology Program, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Lisa M Jenkins
- Laboratory of Cell Biology, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Alexei Lobanov
- CCR Collaborative Bioinformatics Resource (CCBR) National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Maggie Cam
- CCR Collaborative Bioinformatics Resource (CCBR) National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Natalie Porat-Shliom
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, MD, USA.
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13
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Zambello L, Scorrano L. A RalA between high-fat diet and mitochondrial shape. Nat Metab 2024; 6:198-199. [PMID: 38286820 DOI: 10.1038/s42255-023-00969-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Affiliation(s)
- Ludovica Zambello
- Department of Biology, University of Padova, Padova, Italy
- Veneto Institute of Molecular Medicine, Padova, Italy
| | - Luca Scorrano
- Department of Biology, University of Padova, Padova, Italy.
- Veneto Institute of Molecular Medicine, Padova, Italy.
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14
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Javed Z, Shin DH, Pan W, White SR, Kim YS, Elhaw AT, Kamlapurkar S, Cheng YY, Benson JC, Abdelnaby AE, Phaëton R, Wang HG, Yang S, Sullivan ML, St.Croix CM, Watkins SC, Mullett SJ, Gelhaus SL, Lee N, Coffman LG, Aird KM, Trebak M, Mythreye K, Walter V, Hempel N. Alternative splice variants of the mitochondrial fission protein DNM1L/Drp1 regulate mitochondrial dynamics and tumor progression in ovarian cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.09.20.558501. [PMID: 37790404 PMCID: PMC10542115 DOI: 10.1101/2023.09.20.558501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Aberrant mitochondrial fission/fusion dynamics have been reported in cancer cells. While post translational modifications are known regulators of the mitochondrial fission/fusion machinery, we show that alternative splice variants of the fission protein Drp1 (DNM1L) have specific and unique roles in cancer, adding to the complexity of mitochondrial fission/fusion regulation in tumor cells. Ovarian cancer specimens express an alternative splice transcript variant of Drp1 lacking exon 16 of the variable domain, and high expression of this splice variant relative to other transcripts is associated with poor patient outcome. Unlike the full-length variant, expression of Drp1 lacking exon 16 leads to decreased association of Drp1 to mitochondrial fission sites, more fused mitochondrial networks, enhanced respiration, and TCA cycle metabolites, and is associated with a more metastatic phenotype in vitro and in vivo. These pro-tumorigenic effects can also be inhibited by specific siRNA-mediated inhibition of the endogenously expressed transcript lacking exon 16. Moreover, lack of exon 16 abrogates mitochondrial fission in response to pro-apoptotic stimuli and leads to decreased sensitivity to chemotherapeutics. These data emphasize the significance of the pathophysiological consequences of Drp1 alternative splicing and divergent functions of Drp1 splice variants, and strongly warrant consideration of Drp1 splicing in future studies.
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Affiliation(s)
- Zaineb Javed
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
- Department of Pharmacology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Dong Hui Shin
- Department of Pharmacology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Weihua Pan
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
| | - Sierra R. White
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
- Vascular Medicine Institute (VMI), University of Pittsburgh School of Medicine, PA, USA
| | - Yeon Soo Kim
- Department of Pharmacology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Amal Taher Elhaw
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
- Department of Pharmacology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Shriya Kamlapurkar
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
| | - Ya-Yun Cheng
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
| | - J Cory Benson
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, PA, USA
| | - Ahmed Emam Abdelnaby
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, PA, USA
| | - Rébécca Phaëton
- Department of Obstetrics & Gynecology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Hong-Gang Wang
- Department of Pediatrics, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Shengyu Yang
- Department of Cellular and Molecular Physiology, College of Medicine, Pennsylvania State University, Hershey, PA, USA; Health Sciences Mass Spectrometry Core, University of Pittsburgh, PA, USA
| | - Mara L.G. Sullivan
- Center for Biologic Imaging, University of Pittsburgh School of Medicine, PA, USA; Division of Pharmacology, Chemistry and Biochemistry, College of Medicine, University of Arizona, Tucson, AZ, USA
| | - Claudette M. St.Croix
- Center for Biologic Imaging, University of Pittsburgh School of Medicine, PA, USA; Division of Pharmacology, Chemistry and Biochemistry, College of Medicine, University of Arizona, Tucson, AZ, USA
| | - Simon C. Watkins
- Center for Biologic Imaging, University of Pittsburgh School of Medicine, PA, USA; Division of Pharmacology, Chemistry and Biochemistry, College of Medicine, University of Arizona, Tucson, AZ, USA
| | - Steven J. Mullett
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, PA, USA
- Department of Cellular and Molecular Physiology, College of Medicine, Pennsylvania State University, Hershey, PA, USA; Health Sciences Mass Spectrometry Core, University of Pittsburgh, PA, USA
| | - Stacy L. Gelhaus
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, PA, USA
- Department of Cellular and Molecular Physiology, College of Medicine, Pennsylvania State University, Hershey, PA, USA; Health Sciences Mass Spectrometry Core, University of Pittsburgh, PA, USA
| | - Nam Lee
- Center for Biologic Imaging, University of Pittsburgh School of Medicine, PA, USA; Division of Pharmacology, Chemistry and Biochemistry, College of Medicine, University of Arizona, Tucson, AZ, USA
| | - Lan G. Coffman
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
| | - Katherine M. Aird
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Pharmacology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Mohamed Trebak
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Pharmacology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
- Vascular Medicine Institute (VMI), University of Pittsburgh School of Medicine, PA, USA
- Vascular Medicine Institute (VMI), University of Pittsburgh School of Medicine, PA, USA
| | - Karthikeyan Mythreye
- Department of Pathology and O’Neal Comprehensive Cancer Center, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Vonn Walter
- Department of Public Health Sciences, Division of Biostatistics and Bioinformatics and Department of Biochemistry and Molecular Biology, College of Medicine, Pennsylvania State University, Hershey, PA, USA
| | - Nadine Hempel
- UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, PA, USA
- Department of Medicine, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, PA, USA
- Vascular Medicine Institute (VMI), University of Pittsburgh School of Medicine, PA, USA
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15
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Xiao S, Qi M, Zhou Q, Gong H, Wei D, Wang G, Feng Q, Wang Z, Liu Z, Zhou Y, Ma X. Macrophage fatty acid oxidation in atherosclerosis. Biomed Pharmacother 2024; 170:116092. [PMID: 38157642 DOI: 10.1016/j.biopha.2023.116092] [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: 09/27/2023] [Revised: 12/21/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024] Open
Abstract
Atherosclerosis significantly contributes to the development of cardiovascular diseases (CVD) and is characterized by lipid retention and inflammation within the artery wall. Multiple immune cell types are implicated in the pathogenesis of atherosclerosis, macrophages play a central role as the primary source of inflammatory effectors in this pathogenic process. The metabolic influences of lipids on macrophage function and fatty acid β-oxidation (FAO) have similarly drawn attention due to its relevance as an immunometabolic hub. This review discusses recent findings regarding the impact of mitochondrial-dependent FAO in the phenotype and function of macrophages, as well as transcriptional regulation of FAO within macrophages. Finally, the therapeutic strategy of macrophage FAO in atherosclerosis is highlighted.
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Affiliation(s)
- Sujun Xiao
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Mingxu Qi
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Qinyi Zhou
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Huiqin Gong
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Duhui Wei
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Guangneng Wang
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Qilun Feng
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Zhou Wang
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Zhe Liu
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Yiren Zhou
- The Affiliated Nanhua Hospital, Department of Emergency, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Xiaofeng Ma
- The Affiliated Nanhua Hospital, Department of Cardiology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China.
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16
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Chen S, Su X, Zhu J, Xiao L, Cong Y, Yang L, Du Z, Huang X. Metabolic plasticity sustains the robustness of Caenorhabditis elegans embryogenesis. EMBO Rep 2023; 24:e57440. [PMID: 37885348 DOI: 10.15252/embr.202357440] [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: 05/04/2023] [Revised: 09/22/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023] Open
Abstract
Embryogenesis is highly dependent on maternally loaded materials, particularly those used for energy production. Different environmental conditions and genetic backgrounds shape embryogenesis. The robustness of embryogenesis in response to extrinsic and intrinsic changes remains incompletely understood. By analyzing the levels of two major nutrients, glycogen and neutral lipids, we discovered stage-dependent usage of these two nutrients along with mitochondrial morphology changes during Caenorhabditis elegans embryogenesis. ATGL, the rate-limiting lipase in cellular lipolysis, is expressed and required in the hypodermis to regulate mitochondrial function and support embryogenesis. The embryonic lethality of atgl-1 mutants can be suppressed by reducing sinh-1/age-1-akt signaling, likely through modulating glucose metabolism to maintain sustainable glucose consumption. The embryonic lethality of atgl-1(xd314) is also affected by parental nutrition. Parental glucose and oleic acid supplements promote glycogen storage in atgl-1(xd314) embryos to compensate for the impaired lipolysis. The rescue by parental vitamin B12 supplement is likely through enhancing mitochondrial function in atgl-1 mutants. These findings reveal that metabolic plasticity contributes to the robustness of C. elegans embryogenesis.
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Affiliation(s)
- Siyu Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xing Su
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jinglin Zhu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Long Xiao
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yulin Cong
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Leilei Yang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhuo Du
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xun Huang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou, China
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17
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Jiang H, Song D, Zhou X, Chen F, Yu Q, Ren L, Dai Q, Zeng M. Maresin1 ameliorates MSU crystal-induced inflammation by upregulating Prdx5 expression. Mol Med 2023; 29:158. [PMID: 37996809 PMCID: PMC10668345 DOI: 10.1186/s10020-023-00756-w] [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: 06/20/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND Maresin1 (MaR1) is a potent lipid mediator that exhibits significant anti-inflammatory activity in the context of several inflammatory diseases. A previous study reported that MaR1 could suppress MSU crystal-induced peritonitis in mice. To date, the molecular mechanism by which MaR1 inhibits MSU crystal-induced inflammation remains poorly understood. METHODS Mousebone marrow-derived macrophages (BMDMs) were pretreated with MaR1 and then stimulated with FAs (palmitic, C16:0 and stearic, C18:0) plus MSU crystals (FAs + MSUc). In vivo, the effects of MaR1 treatment or Prdx5 deficiency on MSUc induced peritonitis and arthritis mouse models were evaluated. RESULTS The current study indicated that MaR1 effectively suppressed MSUc induced inflammation in vitro and in vivo. MaR1 reversed the decrease in Prdx5 mRNA and protein levels induced by FAs + MSUc. Further assays demonstrated that MaR1 acceleratedPrdx5 expression by regulating the Keap1-Nrf2 signaling axis. Activation of AMPK by Prdx5 improved homeostasis of the TXNIP and TRX proteins and alleviated mitochondrial fragmentation. In addition, Prdx5 overexpression inhibited the expression of CPT1A, a key enzyme for fatty acid oxidation (FAO). Prdx5 protected against defects in FA + MSUc induced FAO and the urea cycle. CONCLUSION MaR1 treatment effectively attenuated MSUc induced inflammation by upregulating Prdx5 expression. Our study provides a new strategy by which Prdx5 may help prevent acute gout attacks.
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Affiliation(s)
- Hui Jiang
- Institute of Rheumatology and Immunology, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan Province, China
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, 234# Fujiang Road, Nanchong, 637001, Sichuan Province, China
| | - DianZe Song
- Institute of Rheumatology and Immunology, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan Province, China
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, 234# Fujiang Road, Nanchong, 637001, Sichuan Province, China
- Medical Imaging Key Laboratory of Sichuan Province, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan, China
| | - Xiaoqin Zhou
- Institute of Rheumatology and Immunology, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan Province, China
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, 234# Fujiang Road, Nanchong, 637001, Sichuan Province, China
| | - Feng Chen
- Institute of Rheumatology and Immunology, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan Province, China
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, 234# Fujiang Road, Nanchong, 637001, Sichuan Province, China
| | - Qingqing Yu
- Institute of Rheumatology and Immunology, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan Province, China
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, 234# Fujiang Road, Nanchong, 637001, Sichuan Province, China
- Medical Imaging Key Laboratory of Sichuan Province, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan, China
| | - Long Ren
- The Fifth People's Hospital of Nanchong City, 21# Bajiao Street, Nanchong, 637100, Sichuan, China
| | - Qian Dai
- Institute of Rheumatology and Immunology, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan Province, China
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, 234# Fujiang Road, Nanchong, 637001, Sichuan Province, China
| | - Mei Zeng
- Institute of Rheumatology and Immunology, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan Province, China.
- Institute of Basic Medicine and Forensic Medicine, North Sichuan Medical College, 234# Fujiang Road, Nanchong, 637001, Sichuan Province, China.
- Medical Imaging Key Laboratory of Sichuan Province, The Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Road, Nanchong, 637001, Sichuan, China.
- The Fifth People's Hospital of Nanchong City, 21# Bajiao Street, Nanchong, 637100, Sichuan, China.
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18
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Kang SWS, Cunningham RP, Miller CB, Brown LA, Cultraro CM, Harned A, Narayan K, Hernandez J, Jenkins LM, Lobanov A, Cam M, Porat-Shliom N. A spatial map of hepatic mitochondria uncovers functional heterogeneity shaped by nutrient-sensing signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.13.536717. [PMID: 37333328 PMCID: PMC10274915 DOI: 10.1101/2023.04.13.536717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
In the liver, mitochondria are exposed to different concentrations of nutrients due to their spatial positioning across the periportal (PP) and pericentral (PC) axis. How these mitochondria sense and integrate these signals to respond and maintain homeostasis is not known. Here, we combined intravital microscopy, spatial proteomics, and functional assessment to investigate mitochondrial heterogeneity in the context of liver zonation. We found that PP and PC mitochondria are morphologically and functionally distinct; beta-oxidation was elevated in PP regions, while lipid synthesis was predominant in the PC mitochondria. In addition, comparative phosphoproteomics revealed spatially distinct patterns of mitochondrial composition and potential regulation via phosphorylation. Acute pharmacological modulation of nutrient sensing through AMPK and mTOR shifted mitochondrial phenotypes in the PP and PC regions, linking nutrient gradients across the lobule and mitochondrial heterogeneity. This study highlights the role of protein phosphorylation in mitochondrial structure, function, and overall homeostasis in hepatic metabolic zonation. These findings have important implications for liver physiology and disease.
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Affiliation(s)
- Sun Woo Sophie Kang
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Rory P. Cunningham
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Colin B. Miller
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Lauryn A. Brown
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Constance M. Cultraro
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Adam Harned
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
- Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
| | - Kedar Narayan
- Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
- Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, Maryland, USA
| | - Jonathan Hernandez
- Surgical Oncology Program, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Lisa M. Jenkins
- Laboratory of Cell Biology, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Alexei Lobanov
- CCR Collaborative Bioinformatics Resource (CCBR) National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Maggie Cam
- CCR Collaborative Bioinformatics Resource (CCBR) National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
| | - Natalie Porat-Shliom
- Cell Biology and Imaging Section, Thoracic and GI Malignancies Branch, National Cancer Institute (NCI), National Institutes of Health (NIH), Bethesda, Maryland, USA
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19
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Hu D, Tan M, Lu D, Kleiboeker B, Liu X, Park H, Kravitz AV, Shoghi KI, Tseng YH, Razani B, Ikeda A, Lodhi IJ. TMEM135 links peroxisomes to the regulation of brown fat mitochondrial fission and energy homeostasis. Nat Commun 2023; 14:6099. [PMID: 37773161 PMCID: PMC10541902 DOI: 10.1038/s41467-023-41849-8] [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: 10/24/2022] [Accepted: 09/20/2023] [Indexed: 10/01/2023] Open
Abstract
Mitochondrial morphology, which is controlled by mitochondrial fission and fusion, is an important regulator of the thermogenic capacity of brown adipocytes. Adipose-specific peroxisome deficiency impairs thermogenesis by inhibiting cold-induced mitochondrial fission due to decreased mitochondrial membrane content of the peroxisome-derived lipids called plasmalogens. Here, we identify TMEM135 as a critical mediator of the peroxisomal regulation of mitochondrial fission and thermogenesis. Adipose-specific TMEM135 knockout in mice blocks mitochondrial fission, impairs thermogenesis, and increases diet-induced obesity and insulin resistance. Conversely, TMEM135 overexpression promotes mitochondrial division, counteracts obesity and insulin resistance, and rescues thermogenesis in peroxisome-deficient mice. Mechanistically, thermogenic stimuli promote association between peroxisomes and mitochondria and plasmalogen-dependent localization of TMEM135 in mitochondria, where it mediates PKA-dependent phosphorylation and mitochondrial retention of the fission factor Drp1. Together, these results reveal a previously unrecognized inter-organelle communication regulating mitochondrial fission and energy homeostasis and identify TMEM135 as a potential target for therapeutic activation of BAT.
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Affiliation(s)
- Donghua Hu
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Min Tan
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Dongliang Lu
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Brian Kleiboeker
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Xuejing Liu
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Hongsuk Park
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Alexxai V Kravitz
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA
| | - Kooresh I Shoghi
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA
| | - Yu-Hua Tseng
- Section on Integrative Physiology and Metabolism, Research Division, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Babak Razani
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- University of Pittsburgh School of Medicine and UPMC, Pittsburgh, PA, USA
| | - Akihiro Ikeda
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, USA
| | - Irfan J Lodhi
- Division of Endocrinology, Metabolism & Lipid Research, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA.
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20
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Huang L, Bai Q, Wang Z, Zhang X, Liu K, Cui J, Du L, Liu S, Fu Y, Wang H, Li D, Sun H. Carbon Dots as Potential Therapeutic Agents for Treating Non-Alcoholic Fatty Liver Disease and Associated Inflammatory Bone Loss. Bioconjug Chem 2023; 34:1704-1715. [PMID: 37639623 DOI: 10.1021/acs.bioconjchem.3c00362] [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: 08/31/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) has emerged as one of the most significant metabolic diseases worldwide and is associated with heightened systemic inflammation, which has been shown to foster the development of extrahepatic complications. So far, there is no definitive, effective, and safe treatment for NAFLD. Although antidiabetic agents show potential for treating NAFLD, their efficacy is significantly limited by inadequate liver accumulation at safe doses and unwanted side effects. Herein, we demonstrate that pharmacologically active carbon dots (MCDs) derived from metformin can selectively accumulate in the liver and ameliorate NAFLD by activating hepatic PPARα expression while maintaining an excellent biosafety. Interestingly, MCDs can also improve the function of extrahepatic organs and tissues, such as alleviating alveolar inflammatory bone loss, in the process of treating NAFLD. This study proposes a feasible and safe strategy for designing pharmacologically active MCDs to target the liver, which regulates lipid metabolism and systemic inflammation, thereby treating NAFLD and its related extrahepatic complications.
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Affiliation(s)
- Lei Huang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Qinzhu Bai
- Department of Radiology, The Second Hospital of Jilin University, Changchun 130041, P.R. China
| | - Zhuoran Wang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Xu Zhang
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Kexuan Liu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Jing Cui
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Liuyi Du
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Shuchen Liu
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Yunhe Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130062, P.R. China
| | - Huan Wang
- State Key Laboratory of Rare Earth Resources Utilization and Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China
| | - Daowei Li
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
| | - Hongchen Sun
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun 130021, P.R. China
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21
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Muñoz JP, Basei FL, Rojas ML, Galvis D, Zorzano A. Mechanisms of Modulation of Mitochondrial Architecture. Biomolecules 2023; 13:1225. [PMID: 37627290 PMCID: PMC10452872 DOI: 10.3390/biom13081225] [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: 06/15/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023] Open
Abstract
Mitochondrial network architecture plays a critical role in cellular physiology. Indeed, alterations in the shape of mitochondria upon exposure to cellular stress can cause the dysfunction of these organelles. In this scenario, mitochondrial dynamics proteins and the phospholipid composition of the mitochondrial membrane are key for fine-tuning the modulation of mitochondrial architecture. In addition, several factors including post-translational modifications such as the phosphorylation, acetylation, SUMOylation, and o-GlcNAcylation of mitochondrial dynamics proteins contribute to shaping the plasticity of this architecture. In this regard, several studies have evidenced that, upon metabolic stress, mitochondrial dynamics proteins are post-translationally modified, leading to the alteration of mitochondrial architecture. Interestingly, several proteins that sustain the mitochondrial lipid composition also modulate mitochondrial morphology and organelle communication. In this context, pharmacological studies have revealed that the modulation of mitochondrial shape and function emerges as a potential therapeutic strategy for metabolic diseases. Here, we review the factors that modulate mitochondrial architecture.
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Affiliation(s)
- Juan Pablo Muñoz
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
- Institut d’Investigació Biomèdica Sant Pau (IIB SANT PAU), 08041 Barcelona, Spain
| | - Fernanda Luisa Basei
- Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas, 13083-871 Campinas, SP, Brazil
| | - María Laura Rojas
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba X5000HUA, Argentina
| | - David Galvis
- Programa de Química Farmacéutica, Universidad CES, Medellín 050031, Colombia
| | - Antonio Zorzano
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029 Madrid, Spain
- Institute for Research in Biomedicine (IRB Barcelona), 08028 Barcelona, Spain
- Departament de Bioquímica i Biomedicina Molecular, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
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22
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Valera-Alberni M, Mair WB. Fast fragmenting mitochondria by TORC2. Nat Cell Biol 2023:10.1038/s41556-023-01173-1. [PMID: 37386152 DOI: 10.1038/s41556-023-01173-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Affiliation(s)
| | - William B Mair
- Harvard T.H. Chan School of Public Health, Boston, MA, USA.
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23
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Seifert EL, Hajnóczky G. Fuel oxidation under the control of mitochondrial shape and dynamics. EMBO J 2023; 42:e114129. [PMID: 37154272 PMCID: PMC10233371 DOI: 10.15252/embj.2023114129] [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: 03/27/2023] [Accepted: 03/31/2023] [Indexed: 05/10/2023] Open
Abstract
How mitochondrial shape and substrate-specific metabolism are related has been a difficult question to address. Here, new work by Ngo et al (2023) reports that mitochondrial shape-long versus fragmented-determines the activity of β-oxidation of long-chain fatty acids, supporting a novel role for mitochondrial fission products as β-oxidation hubs.
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Affiliation(s)
- Erin L Seifert
- MitoCare Center, Department of Pathology and Genomic MedicineThomas Jefferson UniversityPhiladelphiaPAUSA
| | - György Hajnóczky
- MitoCare Center, Department of Pathology and Genomic MedicineThomas Jefferson UniversityPhiladelphiaPAUSA
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