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Abe J, Aono Y, Hirai Y. The decline in cellular iron is crucial for differentiation in keratinocytes. Metallomics 2024; 16:mfae014. [PMID: 38449344 DOI: 10.1093/mtomcs/mfae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/05/2024] [Indexed: 03/08/2024]
Abstract
Iron is a vital metal for most biological functions in tissues, and its concentration is exquisitely regulated at the cellular level. During the process of differentiation, keratinocytes in the epidermis undergo a noticeable reduction in iron content. Conversely, psoriatic lesions, characterized by disruptions in epidermal differentiation, frequently reveal an excessive accumulation of iron within keratinocytes that have undergone differentiation. In this study, we clarified the significance of attenuated cellular iron content in the intricate course of epidermal differentiation. We illustrated this phenomenon through the utilization of hinokitiol, an iron chelator derived from the heartwood of Taiwanese hinoki, which forcibly delivers iron into cells independent of the intrinsic iron-regulation systems. While primary cultured keratinocytes readily succumbed to necrotic cell death by this iron chelator, mild administration of the hinokitiol-iron complex modestly disrupts the process of differentiation in these cells. Notably, keratinocyte model cells HaCaT and anaplastic skin rudiments exhibit remarkable resilience against the cytotoxic impact of hinokitiol, and the potent artificial influx of iron explains a suppressive effect selectively on epidermal differentiation. Moreover, the augmentation of iron content induced by the overexpression of divalent metal transporter 1 culminates in the inhibition of differentiation in HaCaT cells. Consequently, the diminution in cellular iron content emerges as an important determinant influencing the trajectory of keratinocyte differentiation.
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Affiliation(s)
- Junya Abe
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University. 1, Gakuen-Uegahara, Sanda 669-1330, Japan
| | - Yuichi Aono
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University. 1, Gakuen-Uegahara, Sanda 669-1330, Japan
| | - Yohei Hirai
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University. 1, Gakuen-Uegahara, Sanda 669-1330, Japan
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Lv B, Fu P, Wang M, Cui L, Bao L, Wang X, Yu L, Zhou C, Zhu M, Wang F, Pang Y, Qi S, Zhang Z, Cui G. DMT1 ubiquitination by Nedd4 protects against ferroptosis after intracerebral hemorrhage. CNS Neurosci Ther 2024; 30:e14685. [PMID: 38634270 PMCID: PMC11024684 DOI: 10.1111/cns.14685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 01/20/2024] [Accepted: 02/06/2024] [Indexed: 04/19/2024] Open
Abstract
OBJECTIVE Neuronal precursor cells expressed developmentally down-regulated 4 (Nedd4) are believed to play a critical role in promoting the degradation of substrate proteins and are involved in numerous biological processes. However, the role of Nedd4 in intracerebral hemorrhage (ICH) remains unknown. This study aims to investigate the regulatory role of Nedd4 in the ICH model. METHODS Male C57BL/6J mice were induced with ICH. Subsequently, the levels of glutathione peroxidase 4 (GPX4), malondialdehyde (MDA) concentration, iron content, mitochondrial morphology, as well as the expression of divalent metal transporter 1 (DMT1) and Nedd4 were assessed after ICH. Furthermore, the impact of Nedd4 overexpression was evaluated through analyses of hematoma area, ferroptosis, and neurobehavioral function. The mechanism underlying Nedd4-mediated degradation of DMT1 was elecidated using immunoprecipitation (IP) after ICH. RESULTS Upon ICH, the level of DMT1 in the brain increased, but decreased when Nedd4 was overexpressed using Lentivirus, suggesting a negative correlation between Nedd4 and DMT1. Additionally, the degradation of DMT1 was inhibited after ICH. Furthermore, it was found that Nedd4 can interact with and ubiquitinate DMT1 at lysine residues 6, 69, and 277, facilitating the degradation of DMT1. Functional analysis indicated that overexpression of Nedd4 can alleviate ferroptosis and promote recovery following ICH. CONCLUSION The results demonstrated that ferroptosis occurs via the Nedd4/DMT1 pathway during ICH, suggesting it potential as a valuable target to inhibit ferroptosis for the treatment of ICH.
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Affiliation(s)
- Bingchen Lv
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Ping Fu
- School of Life Sciences, Nanjing UniversityNanjingChina
| | - Miao Wang
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Department of GeriatricsThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
| | - Likun Cui
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Lei Bao
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Xingzhi Wang
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Lu Yu
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Chao Zhou
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Mengxin Zhu
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Fei Wang
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Ye Pang
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Suhua Qi
- School of Medical Technology, Xuzhou Medical UniversityXuzhouChina
| | - Zuohui Zhang
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
| | - Guiyun Cui
- Department of NeurologyThe Affiliated Hospital of Xuzhou Medical UniversityXuzhouChina
- Institute of Stroke Research, Xuzhou Medical UniversityXuzhouChina
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Guthrie LM, Soma S, Yuan S, Silva A, Zulkifli M, Snavely TC, Greene HF, Nunez E, Lynch B, De Ville C, Shanbhag V, Lopez FR, Acharya A, Petris MJ, Kim BE, Gohil VM, Sacchettini JC. Elesclomol alleviates Menkes pathology and mortality by escorting Cu to cuproenzymes in mice. Science 2020; 368:620-625. [PMID: 32381719 DOI: 10.1126/science.aaz8899] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 02/10/2020] [Accepted: 03/19/2020] [Indexed: 12/23/2022]
Abstract
Loss-of-function mutations in the copper (Cu) transporter ATP7A cause Menkes disease. Menkes is an infantile, fatal, hereditary copper-deficiency disorder that is characterized by progressive neurological injury culminating in death, typically by 3 years of age. Severe copper deficiency leads to multiple pathologies, including impaired energy generation caused by cytochrome c oxidase dysfunction in the mitochondria. Here we report that the small molecule elesclomol escorted copper to the mitochondria and increased cytochrome c oxidase levels in the brain. Through this mechanism, elesclomol prevented detrimental neurodegenerative changes and improved the survival of the mottled-brindled mouse-a murine model of severe Menkes disease. Thus, elesclomol holds promise for the treatment of Menkes and associated disorders of hereditary copper deficiency.
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Affiliation(s)
- Liam M Guthrie
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, College Station, TX 77843, USA
| | - Shivatheja Soma
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Sai Yuan
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA
| | - Andres Silva
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Mohammad Zulkifli
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Thomas C Snavely
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Hannah Faith Greene
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Elyssa Nunez
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Brogan Lynch
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Courtney De Ville
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Vinit Shanbhag
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
| | - Franklin R Lopez
- Texas Veterinary Medicine Diagnostic Laboratory, College Station, TX 77843, USA
| | - Arjun Acharya
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Michael J Petris
- Department of Biochemistry, University of Missouri, Columbia, MO 65211, USA
| | - Byung-Eun Kim
- Department of Animal and Avian Sciences, University of Maryland, College Park, MD 20742, USA
| | - Vishal M Gohil
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA.
| | - James C Sacchettini
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA.
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