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Zhu S, Niu Y, Zhou W, Liu Y, Liu J, Liu X, Lu L, Yu C. Mitochondrial copper overload promotes renal fibrosis via inhibiting pyruvate dehydrogenase activity. Cell Mol Life Sci 2024; 81:340. [PMID: 39120696 PMCID: PMC11335263 DOI: 10.1007/s00018-024-05358-1] [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: 02/13/2024] [Revised: 06/15/2024] [Accepted: 07/09/2024] [Indexed: 08/10/2024]
Abstract
Copper is a trace element essential for numerous biological activities, whereas the mitochondria serve as both major sites of intracellular copper utilization and copper reservoir. Here, we investigated the impact of mitochondrial copper overload on the tricarboxylic acid cycle, renal senescence and fibrosis. We found that copper ion levels are significantly elevated in the mitochondria in fibrotic kidney tissues, which are accompanied by reduced pyruvate dehydrogenase (PDH) activity, mitochondrial dysfunction, cellular senescence and renal fibrosis. Conversely, lowering mitochondrial copper levels effectively restore PDH enzyme activity, improve mitochondrial function, mitigate cellular senescence and renal fibrosis. Mechanically, we found that mitochondrial copper could bind directly to lipoylated dihydrolipoamide acetyltransferase (DLAT), the E2 component of the PDH complex, thereby changing the interaction between the subunits of lipoylated DLAT, inducing lipoylated DLAT protein dimerization, and ultimately inhibiting PDH enzyme activity. Collectively, our study indicates that mitochondrial copper overload could inhibit PDH activity, subsequently leading to mitochondrial dysfunction, cellular senescence and renal fibrosis. Reducing mitochondrial copper overload might therefore serve as a strategy to rescue renal fibrosis.
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Affiliation(s)
- Saiya Zhu
- Department of Nephrology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Yangyang Niu
- Department of Nephrology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Wenqian Zhou
- Department of Nephrology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Yuqing Liu
- Department of Nephrology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Jing Liu
- Department of Nephrology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Xi Liu
- Department of Nephrology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Limin Lu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Shanghai Medical College, Fudan University, Yixueyuan Road, Shanghai, 200032, China.
| | - Chen Yu
- Department of Nephrology, Tongji Hospital, School of Medicine, Tongji University, Shanghai, 200092, China.
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Shanbhag VC, Gudekar N, Jasmer K, Papageorgiou C, Singh K, Petris MJ. Copper metabolism as a unique vulnerability in cancer. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118893. [PMID: 33091507 DOI: 10.1016/j.bbamcr.2020.118893] [Citation(s) in RCA: 190] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 02/07/2023]
Abstract
The last 25 years have witnessed tremendous progress in identifying and characterizing proteins that regulate the uptake, intracellular trafficking and export of copper. Although dietary copper is required in trace amounts, sufficient quantities of this metal are needed to sustain growth and development in humans and other mammals. However, copper is also a rate-limiting nutrient for the growth and proliferation of cancer cells. Oral copper chelators taken with food have been shown to confer anti-neoplastic and anti-metastatic benefits in animals and humans. Recent studies have begun to identify specific roles for copper in pathways of oncogenic signaling and resistance to anti-neoplastic drugs. Here, we review the general mechanisms of cellular copper homeostasis and discuss roles of copper in cancer progression, highlighting metabolic vulnerabilities that may be targetable in the development of anticancer therapies.
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Affiliation(s)
- Vinit C Shanbhag
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, United States of America; The Christopher S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, United States of America
| | - Nikita Gudekar
- Genetics Area Program, University of Missouri, Columbia, MO 65211, United States of America; The Christopher S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, United States of America
| | - Kimberly Jasmer
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, United States of America; The Christopher S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, United States of America
| | - Christos Papageorgiou
- Department of Medicine, University of Missouri, Columbia, MO 65211, United States of America
| | - Kamal Singh
- The Christopher S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, United States of America; Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, United States of America
| | - Michael J Petris
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, United States of America; Department of Ophthalmology, University of Missouri, Columbia, MO 65211, United States of America; Genetics Area Program, University of Missouri, Columbia, MO 65211, United States of America; The Christopher S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, United States of America.
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Hu X, Go YM, Jones DP. Omics Integration for Mitochondria Systems Biology. Antioxid Redox Signal 2020; 32:853-872. [PMID: 31891667 PMCID: PMC7074923 DOI: 10.1089/ars.2019.8006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 12/30/2019] [Indexed: 12/13/2022]
Abstract
Significance: Elucidation of the central importance of mitophagy in homeostasis of cells and organisms emphasizes that mitochondrial functions extend far beyond short-term needs for energy production. In mitochondria systems biology, the mitochondrial genome, proteome, and metabolome operate as a functional network in coordination of cell activities. Organization occurs through subnetworks that are interconnected by membrane potential, transport activities, allosteric and cooperative interactions, redox signaling mechanisms, rheostatic control by post-translational modifications, and metal ion homeostasis. These subnetworks enable use of varied energy precursors, defense against environmental stressors, and macromolecular rewiring to titrate energy production, biosynthesis, and detoxification according to cell-specific needs. Rewiring mechanisms, termed mitochondrial reprogramming, enhance fitness to respond to metabolic resources and challenges from the environment. Maladaptive responses can cause cell death. Maladaptive rewiring can cause disease. In cancer, adaptive rewiring can interfere with effective treatment. Recent Advances: Many recent advances have been facilitated by the development of new omics tools, which create opportunities to use data-driven analysis of omics data to address these complex adaptive and maladaptive mechanisms of mitochondrial reprogramming in human disease. Critical Issues: Application of omics integration to model systems reveals a critical role for metal ion homeostasis broadly impacting mitochondrial reprogramming. Importantly, data show that trans-omics associations are more robust and biologically relevant than single omics associations. Future Directions: Application of omics integration to mitophagy research creates new opportunities to link the complex, interactive functions of mitochondrial form and function in mitochondria systems biology.
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Affiliation(s)
- Xin Hu
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Young-Mi Go
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
| | - Dean P. Jones
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia
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Knight SAB, Yoon H, Pandey AK, Pain J, Pain D, Dancis A. Splitting the functions of Rim2, a mitochondrial iron/pyrimidine carrier. Mitochondrion 2019; 47:256-265. [PMID: 30660752 DOI: 10.1016/j.mito.2018.12.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 11/29/2018] [Accepted: 12/28/2018] [Indexed: 10/27/2022]
Abstract
Rim2 is an unusual mitochondrial carrier protein capable of transporting both iron and pyrimidine nucleotides. Here we characterize two point mutations generated in the predicted substrate-binding site, finding that they yield disparate effects on iron and pyrimidine transport. The Rim2 (E248A) mutant was deficient in mitochondrial iron transport activity. By contrast, the Rim2 (K299A) mutant specifically abrogated pyrimidine nucleotide transport and exchange, while leaving iron transport activity largely unaffected. Strikingly, E248A preserved TTP/TTP homoexchange but interfered with TTP/TMP heteroexchange, perhaps because proton coupling was dependent on the E248 acidic residue. Rim2-dependent iron transport was unaffected by pyrimidine nucleotides. Rim2-dependent pyrimidine transport was competed by Zn2+ but not by Fe2+, Fe3+ or Cu2+. The iron and pyrimidine nucleotide transport processes displayed different salt requirements; pyrimidine transport was dependent on the salt content of the buffer whereas iron transport was salt independent. In mitochondria containing Rim2 (E248A), iron proteins were decreased, including aconitase (Fe-S), pyruvate dehydrogenase (lipoic acid containing) and cytochrome c (heme protein). Additionally, the rate of Fe-S cluster synthesis in isolated and intact mitochondria was decreased compared with the K299A mutant, consistent with the impairment of iron-dependent functions in that mutant. In summary, mitochondrial iron transport and pyrimidine transport by Rim2 occur separately and independently. Rim2 could be a bifunctional carrier protein.
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Affiliation(s)
- Simon A B Knight
- Department of Medicine, Division of Hematology-Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Heeyong Yoon
- Department of Medicine, Division of Hematology-Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ashutosh K Pandey
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, NJ 07103, USA
| | - Jayashree Pain
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, NJ 07103, USA
| | - Debkumar Pain
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, NJ 07103, USA
| | - Andrew Dancis
- Department of Medicine, Division of Hematology-Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Naletova I, Satriano C, Curci A, Margiotta N, Natile G, Arena G, La Mendola D, Nicoletti VG, Rizzarelli E. Cytotoxic phenanthroline derivatives alter metallostasis and redox homeostasis in neuroblastoma cells. Oncotarget 2018; 9:36289-36316. [PMID: 30555630 PMCID: PMC6284747 DOI: 10.18632/oncotarget.26346] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 11/01/2018] [Indexed: 02/06/2023] Open
Abstract
Copper homeostasis is generally investigated focusing on a single component of the metallostasis network. Here we address several of the factors controlling the metallostasis for neuroblastoma cells (SH-SY5Y) upon treatment with 2,9-dimethyl-1,10-phenanthroline-5,6-dione (phendione) and 2,9-dimethyl-1,10-phenanthroline (cuproindione). These compounds bind and transport copper inside cells, exert their cytotoxic activity through the induction of oxidative stress, causing apoptosis and alteration of the cellular redox and copper homeostasis network. The intracellular pathway ensured by copper transporters (Ctr1, ATP7A), chaperones (CCS, ATOX, COX 17, Sco1, Sco2), small molecules (GSH) and transcription factors (p53) is scrutinised.
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Affiliation(s)
- Irina Naletova
- Department of Chemical Sciences, University of Catania, Catania, Italy
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
| | - Cristina Satriano
- Department of Chemical Sciences, University of Catania, Catania, Italy
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
| | - Alessandra Curci
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
- Department of Chemistry, University of Bari ‘Aldo Moro’, Bari, Italy
| | - Nicola Margiotta
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
- Department of Chemistry, University of Bari ‘Aldo Moro’, Bari, Italy
| | - Giovanni Natile
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
- Department of Chemistry, University of Bari ‘Aldo Moro’, Bari, Italy
| | - Giuseppe Arena
- Department of Chemical Sciences, University of Catania, Catania, Italy
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
| | - Diego La Mendola
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
- Department of Pharmacy, University of Pisa, Pisa, Italy
| | - Vincenzo Giuseppe Nicoletti
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (BIOMETEC), University of Catania, Catania, Italy
| | - Enrico Rizzarelli
- Department of Chemical Sciences, University of Catania, Catania, Italy
- Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (CIRCMSB), Bari, Italy
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