The mitochondrial Cu+ transporter PiC2 (SLC25A3) is a target of MTF1 and contributes to the development of skeletal muscle in vitro
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Abstract
The loading of copper (Cu) into cytochrome c oxidase (COX) in mitochondria is essential for energy production in cells. Extensive studies have been performed to characterize mitochondrial cuproenzymes that contribute to the metallation of COX, such as Sco1, Sco2, and Cox17. However, limited information is available on the upstream mechanism of Cu transport and delivery to mitochondria, especially through Cu-impermeable membranes, in mammalian cells. The mitochondrial phosphate transporter SLC25A3, also known as PiC2, binds Cu + and transports the ion through these membranes in eukaryotic cells, ultimately aiding in the metallation of COX. We used the well-established differentiation model of primary myoblasts derived from mouse satellite cells, wherein Cu availability is necessary for growth and maturation, and showed that PiC2 is a target of MTF1, and its expression is both induced during myogenesis and favored by Cu supplementation. PiC2 deletion using CRISPR/Cas9 showed that the transporter is required for proliferation and differentiation of primary myoblasts, as both processes are delayed upon PiC2 knock-out. The effects of PiC2 deletion were rescued by the addition of Cu to the growth medium, implying the deleterious effects of PiC2 knockout in myoblasts may be in part due to a failure to deliver sufficient Cu to the mitochondria, which can be compensated by other mitochondrial cuproproteins. Co-localization and co-immunoprecipitation of PiC2 and COX also suggest that PiC2 may participate upstream in the copper delivery chain into COX, as verified by in vitro Cu + -transfer experiments. These data indicate an important role for PiC2 in both the delivery of Cu to the mitochondria and COX, favoring the differentiation of primary myoblasts.
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Raimunda, D., Padilla‐Benavides, T., Vogt, S., Boutigny, S., Tomkinson, K. N., Finney, L. A., & ARGÜELLO, J. M. (2013) · Metallomics · doi:10.1039/c2mt20191g · Cited by 31 · see citing works
Self-citationDifferential expression of zinc transporters accompanies the differentiation of C2C12 myoblasts
Paskavitz, A. L., Quintana, J., Cangussu, D., Tavera‐Montañez, C., Xiao, Y., Ortiz‐Miranda, S., Navea, J. G., & Padilla‐Benavides, T. (2018) · Journal of Trace Elements in Medicine and Biology · doi:10.1016/j.jtemb.2018.04.024 · Cited by 31 · see citing works
Self-citationOlea‐Flores, M., Kan, J., Carlson, A., Syed, S. A., McCann, C., Mondal, V., Szady, C., Ricker, H. M., McQueen, A., Navea, J. G., et al. (2022) · Frontiers in Cell and Developmental Biology · doi:10.3389/fcell.2022.895433 · Cited by 31 · see citing works
Self-citationOtoikhian, A. A., Barry, A. N., Mayfield, M. B., Nilges, M. J., Huang, Y., Lutsenko, S., & Blackburn, N. J. (2012) · Journal of the American Chemical Society · doi:10.1021/ja301221s · Cited by 30 · see citing works
Huijbregts, J. E., White, J. D., & Grounds, M. D. (2001) · Acta Histochemica · doi:10.1078/0065-1281-00607 · Cited by 27 · see citing works
Identifying metalloproteins through X-ray fluorescence mapping and mass spectrometry
Raimunda, D., Khare, T., Giometti, C. S., Vogt, S., ARGÜELLO, J. M., & Finney, L. A. (2012) · Metallomics · doi:10.1039/c2mt20095c · Cited by 23 · see citing works
Ouabain Enhances Cell-Cell Adhesion Mediated by β1 Subunits of the Na+,K+-ATPase in CHO Fibroblasts
Vilchis-Nestor, C. A., Roldán, M. L., Leonardi, A., Navea, J. G., Padilla‐Benavides, T., & Shoshani, L. (2019) · International Journal of Molecular Sciences · doi:10.3390/ijms20092111 · Cited by 21 · see citing works
Self-citationDramatic Electronic Perturbations of CuA Centers via Subtle Geometric Changes
Leguto, A. J., Smith, M. A., Morgada, M. N., Zitare, U. A., Murgida, D. H., Lancaster, K. M., & Vila, A. J. (2018) · Journal of the American Chemical Society · doi:10.1021/jacs.8b12335 · Cited by 15 · see citing works
Self-citationIntroduction to Human Disorders of Copper Metabolism
Graper, M. L., Hüster, D., Kaler, S. G., Lutsenko, S., Schilsky, M. L., & Thiele, D. J. (2014) · Annals of the New York Academy of Sciences · doi:10.1111/nyas.12448 · Cited by 15 · see citing works
Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells
Gordon, S. J. V., Xiao, Y., Paskavitz, A. L., Navarro‐Tito, N., Navea, J. G., & Padilla‐Benavides, T. (2019) · Journal of Visualized Experiments · doi:10.3791/59519 · Cited by 11 · see citing works
Self-citationAssay of Copper Transfer and Binding to P1B-ATPases
Padilla‐Benavides, T., & ARGÜELLO, J. M. (2015) · Methods in molecular biology · doi:10.1007/978-1-4939-3179-8_24 · Cited by 4 · see citing works
Self-citation
Flagged first, then by citations
Cited by
Sorted by citations
Mammalian copper homeostasis: physiological roles and molecular mechanisms
Lutsenko, S., Roy, S., & Tsvetkov, P. (2024) · Physiological Reviews · doi:10.1152/physrev.00011.2024 · Cited by 206 · see citing works
The molecular mechanism and therapeutic landscape of copper and cuproptosis in cancer
Guo, Z., Chen, D., Yao, L., Sun, Y., Li, D., Le, J., Dian, Y., Zeng, F., Chen, X., & Deng, G. (2025) · Signal Transduction and Targeted Therapy · doi:10.1038/s41392-025-02192-0 · Cited by 201 · see citing works
Copper homeostasis and cuproptosis in cancer immunity and therapy
Liu, W., Lin, W., Li, Y., Xu, W., & Yang, J. H. (2023) · Immunological Reviews · doi:10.1111/imr.13276 · Cited by 175 · see citing works
The physiological and pathophysiological roles of copper in the nervous system
Gale, J. R., & Aizenman, E. (2024) · European Journal of Neuroscience · doi:10.1111/ejn.16370 · Cited by 80 · see citing works
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Cuproptosis and its potential role in musculoskeletal disease
Xiang, Z., Mei, H., Wang, H., Yao, X., Rao, J., Zhang, W., Xu, A., & Lü, L. (2025) · Frontiers in Cell and Developmental Biology · doi:10.3389/fcell.2025.1570131 · Cited by 23 · see citing works
Boaru, D. L., León-Oliva, D. D., Castro-Martinez, P. D., Montero, C. G., Fraile‐Μartinez, O., García-González, B., Pérez-González, I., Alhaddadin, M. N. M., Barrena-Blázquez, S., López-González, L., et al. (2025) · Biomedicine & Pharmacotherapy · doi:10.1016/j.biopha.2025.118422 · Cited by 23 · see citing works
Exploring Copper’s role in stroke: progress and treatment approaches
Peng, G., Huang, Y., Xie, G., & Tang, J. (2024) · Frontiers in Pharmacology · doi:10.3389/fphar.2024.1409317 · Cited by 21 · see citing works
Roles of Copper Transport Systems Members in Breast Cancer
Chen, Y., Li, C., Li, M., & Han, B. (2024) · Cancer Medicine · doi:10.1002/cam4.70498 · Cited by 18 · see citing works
A primer on copper biology in the brain
Lane, A. R., Roberts, B. R., Fahrni, C. J., & Faúndez, V. (2025) · Neurobiology of Disease · doi:10.1016/j.nbd.2025.106974 · Cited by 15 · see citing works
Emerging perspectives of copper-mediated transcriptional regulation in mammalian cell development
Fitisemanu, F. M., & Padilla‐Benavides, T. (2024) · Metallomics · doi:10.1093/mtomcs/mfae046 · Cited by 14 · see citing works
Self-citationDror, M. J., Misa, J., Yee, D. A., Chu, A. M., Yu, R. K., Chan, B. B., Aoyama, L. S., Chaparala, A. P., O'Connor, S. E., & Tang, Y. (2023) · Journal of Industrial Microbiology & Biotechnology · doi:10.1093/jimb/kuad047 · Cited by 12 · see citing works
Wang, T., Fang, X., Sheng, X., Li, M., Mei, Y., Mei, Q., & Pan, A. (2024) · Heliyon · doi:10.1016/j.heliyon.2024.e27379 · Cited by 9 · see citing works
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Self-citationThe Oncopig as an Emerging Model to Investigate Copper Regulation in Cancer
Carlson, A. L., Carrazco-Carrillo, J., Loder, A., Elkhadragy, L., Schachtschneider, K., & Padilla-Benavides, T. (2022) · International Journal of Molecular Sciences · doi:10.3390/ijms232214012 · Cited by 5 · see citing works
Self-citationThe mediating role of inflammatory biomarkers in the association between serum copper and sarcopenia
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Unveiling the metal-driven death: ferroptosis and cuproptosis in leukemia
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Mechanisms associated with cuproptosis and implications for ovarian cancer
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Liu, N., He, Y., Chen, X., Qiu, G., Wu, Y., & Shen, Y. (2024) · Life Sciences · doi:10.1016/j.lfs.2023.122388 · Cited by 5 · see citing works
Wang, P., Zhou, W., Chen, F., Zhang, X., Chen, Y., Zhang, N., & Zhang, Q. (2024) · Experimental Gerontology · doi:10.1016/j.exger.2024.112496 · Cited by 5 · see citing works
Varadarajan, S., Xiao, Z., Das, A., Ash, D., Yadav, S., Matier, C. D., Pezacki, A. T., Chatterjee, B., Antipova, O. A., Vogt, S., et al. (2025) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2025.01.27.634587 · Cited by 6 · see citing works
Human cytomegalovirus protein UL13 targets to mitochondria to induce cuproptosis
Yang, X., Lei, Y.-L., Zhang, Y., Wang, S., Ren, P., Li, S., & Yi, X.-M. (2025) · Biochemical and Biophysical Research Communications · doi:10.1016/j.bbrc.2025.152330 · Cited by 4 · see citing works
Knockdown of KDM5B Leads to DNA Damage and Cell Cycle Arrest in Granulosa Cells via MTF1
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Decoding Potential Cuproptosis-Related Genes in Sarcopenia: A Multi-Omics Network Analysis
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Serum-free media for cultivated meat: from cellular mechanisms to cost-effective bioprocess design
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Photocatalytic iron dissolution and speciation in Cu-modified TiO 2 aerosol proxies
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The PBAF chromatin remodeling complex contributes to metal homeostasis through MTF1 regulation
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The role of cuproptosis in periodontitis: Current advances and future perspectives
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- Authors
- McCann, C., Quinteros, M., Adelugba, I., Morgada, M. N., Castelblanco, A. R., Davis, E. J., Lanzirotti, A., Hainer, S. J., Vila, A. J., Navea, J. G., & Padilla-Benavides, T.
- Affiliations
- Wesleyan University (US)
- University of Massachusetts Chan Medical School (US)
- Instituto de Biología Molecular y Celular de Rosario (AR)
- Skidmore College (US)
- University of Chicago (US)
- University of Pittsburgh (US)
- ORCID
- Venue
- Frontiers in Molecular Biosciences
- Publisher
- Frontiers Media SA
- Published
- 2022-11-09
- Volume
- 9
- Pages
- 1037941-1037941
- ISSN
- 2296-889X (ISSN-L)
- PMC
- PMC9682256
- OpenAlex
- W4308722499
- Cited by
- 37
- References
- 107
- Citations by year
- 2026: 10 · 2025: 11 · 2024: 11 · 2023: 4 · 2022: 1
- FWCI
- 4.17
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Frontiers in Molecular Biosciences (publishedVersion, cc-by)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Institutes of Health (R01AR077578)
- National Science Foundation (EAR–1634415)
- Topics
- Health Sciences › Nursing › Nutrition and Dietetics › Trace Elements in Health
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
- Keywords
- SLC25A3, MTF-1, myogenesis, satellite cells, copper supplementation
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