4.6 Review

Copper in cancer: from limiting nutrient to therapeutic target

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Article Chemistry, Multidisciplinary

Cuproptosis Induced by ROS Responsive Nanoparticles with Elesclomol and Copper Combined with αPD-L1 for Enhanced Cancer Immunotherapy

Boda Guo et al.

Summary: A new reactive oxygen species-sensitive polymer is designed to encapsulate elesclomol and copper, forming nanoparticles. These nanoparticles can efficiently transport copper into cancer cells and induce cell death through cuproptosis. This study combines nanomedicine-induced cuproptosis with alpha PD-L1 antibody for enhanced cancer therapy, providing a novel strategy for future cancer treatment.

ADVANCED MATERIALS (2023)

Article Energy & Fuels

4-Octyl itaconate inhibits aerobic glycolysis by targeting GAPDH to promote cuproptosis in colorectal cancer

Wenchang Yang et al.

Summary: Cuproptosis, a new cell death pathway induced by copper, is associated with mitochondrial respiration and mediated by protein lipoylation. This study explores the role of cuproptosis in colorectal cancer progression. The results show that elesclomol-Cu inhibits cell viability and promotes apoptosis in colorectal cancer cells. Additionally, 4-Octyl itaconate (4-OI) enhances cuproptosis and inhibits aerobic glycolysis through GAPDH, leading to better anti-tumor effects in vivo.

ENERGY REPORTS (2023)

Article Cell Biology

Prognostic and Immunological Significance of the Molecular Subtypes and Risk Signatures Based on Cuproptosis in Hepatocellular Carcinoma

Xiaolong Tang et al.

Summary: This study investigates the prognostic and immunological significance of cuproptosis in hepatocellular carcinoma (HCC) patients. The researchers identified two cuproptosis-related subtypes of HCC patients, with one subtype showing a worse prognosis and higher immune activity. They developed a prognostic risk signature based on cuproptosis-related genes, which can independently predict the prognosis of HCC patients and is associated with clinical features. Furthermore, high-risk patients were found to have a higher response rate to immune checkpoint inhibitors.

MEDIATORS OF INFLAMMATION (2023)

Article Agriculture, Multidisciplinary

Endoplasmic Reticulum Stress Contributes to Copper-Induced Pyroptosis via Regulating the IRE1α-XBP1 Pathway in Pig Jejunal Epithelial Cells

Jianzhao Liao et al.

Summary: This study investigated the relationship between endoplasmic reticulum stress and pyroptosis in Copper-induced toxicity of the jejunum. Excess intake of Copper caused expansion of ER cavity and increased expression levels related to ER stress and pyroptosis. Inhibition of ER stress and IRE1 alpha-XBP1 pathway alleviated Copper-induced pyroptosis.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2022)

Article Gastroenterology & Hepatology

COMMD10 inhibits HIF1α/CP loop to enhance ferroptosis and radiosensitivity by disrupting Cu-Fe balance in hepatocellular carcinoma

Mi Yang et al.

Summary: The study revealed a novel role of Cu in promoting radioresistance in hepatocellular carcinoma (HCC) by disrupting Cu-Fe homeostasis through the inhibition of the HIF1 alpha/CP loop by COMMD10, enhancing ferroptosis and radiosensitivity.

JOURNAL OF HEPATOLOGY (2022)

Review Biotechnology & Applied Microbiology

Copper-induced tumor cell death mechanisms and antitumor theragnostic applications of copper complexes

Yicheng Jiang et al.

Summary: Recent studies have shown that imbalanced copper homeostasis can affect tumor growth, causing irreversible damage. Copper can induce various forms of cell death, such as apoptosis and autophagy, through mechanisms involving reactive oxygen species accumulation, proteasome inhibition, and antiangiogenesis. This review highlights the antitumor mechanisms of copper, the development of biomaterials and nanotechnology incorporating copper, and the clinical applications of novel copper complexes.

NANOMEDICINE (2022)

Article Biochemistry & Molecular Biology

Induction of autophagy via the ROS-dependent AMPK-mTOR pathway protects copper-induced spermatogenesis disorder

Hongrui Guo et al.

Summary: This study investigated the role of autophagy in copper-induced spermatogenesis disorder. Copper can induce autophagy via the AMPK-mTOR pathway and oxidative stress. Inhibition of autophagy increases cell damage and spermatogenesis disorder, while co-treatment with an apoptosis inhibitor can alleviate the disorder. Autophagy may also aggravate copper toxicity by promoting ferroptosis.

REDOX BIOLOGY (2022)

Article Multidisciplinary Sciences

Copper induces cell death by targeting lipoylated TCA cycle proteins

Peter Tsvetkov et al.

Summary: Copper is an essential cofactor for all organisms, but excessive copper can lead to cell death. We found that copper-dependent cell death mechanism is different from known mechanisms, and it is related to mitochondrial respiration. Copper directly binds to lipoylated components of the tricarboxylic acid cycle, causing protein aggregation and loss of iron-sulfur cluster proteins, ultimately leading to cell death.

SCIENCE (2022)

Review Immunology

Immunotherapy: Reshape the Tumor Immune Microenvironment

Bingzhe Lv et al.

Summary: This article reviews the function of immune cells within the tumor immune microenvironment (TIME) and discusses the contribution of current mainstream immunotherapeutic approaches to remodeling the TIME. Immunotherapy can restore the tumor killing ability of anti-tumor immune cells and shed light on better combination treatment strategies.

FRONTIERS IN IMMUNOLOGY (2022)

Article Oncology

Improving the Therapeutic Efficacy of Sorafenib for Hepatocellular Carcinoma by Repurposing Disulfiram

Gong Zhang et al.

Summary: The combination of DSF/Cu and sorafenib can effectively treat HCC by targeting HCSCs both in vitro and in vivo. DSF/Cu enhances the sensitivity of HCC cells to sorafenib, inhibits proliferation of HCC cells, and decreases the stemness of HCC cells.

FRONTIERS IN ONCOLOGY (2022)

Review Oncology

Elesclomol: a copper ionophore targeting mitochondrial metabolism for cancer therapy

Peijie Zheng et al.

Summary: Elesclomol is an anticancer drug that targets mitochondrial metabolism to suppress cancer growth. It induces cell death by modulating copper levels and exhibits significant toxicity to various cancer cells. The research progress provides a possibility for the reapplication of Elesclomol and suggests combination therapy with other drugs.

JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH (2022)

Article Oncology

Disulfiram/Copper Induces Immunogenic Cell Death and Enhances CD47 Blockade in Hepatocellular Carcinoma

Xingxing Gao et al.

Summary: The combination of disulfiram and copper demonstrates anti-tumor effects in hepatocellular carcinoma by inducing immunogenic cell death and enhancing the efficacy of immune checkpoint blockade.

CANCERS (2022)

Review Biochemistry & Molecular Biology

Copper homeostasis and cuproptosis in health and disease

Liyun Chen et al.

Summary: Copper is an essential micronutrient that is required for various physiological processes in almost all cell types, and its homeostasis is tightly regulated to avoid oxidative stress and cellular dysfunction. Recent studies have identified a novel form of cell death called cuproptosis, which is induced by copper binding to lipoylated enzymes in the tricarboxylic acid cycle and ultimately leads to protein aggregation, proteotoxic stress, and cell death. This article summarizes current knowledge on copper metabolism, copper-related diseases, the characteristics of cuproptosis, and the regulatory mechanisms involved. The implications of cuproptosis in the pathogenesis of diseases such as Wilson's disease, neurodegenerative diseases, and cancer are also discussed, along with the therapeutic potential of targeting cuproptosis.

SIGNAL TRANSDUCTION AND TARGETED THERAPY (2022)

Review Nutrition & Dietetics

Copper in the tumor microenvironment and tumor metastasis

Tetsuro Kamiya

Summary: Copper dysregulation, leading to its accumulation in tumor tissues, is associated with tumor progression and metastasis. Cu transporters, Cu chaperones, and Cu-containing secretory enzymes play important roles in this process. Restricting Cu regulation may serve as a novel strategy to inhibit tumor metastasis.

JOURNAL OF CLINICAL BIOCHEMISTRY AND NUTRITION (2022)

Review Oncology

Targeting ferroptosis as a vulnerability in cancer

Guang Lei et al.

Summary: This article provides an overview of the importance and potential of ferroptosis in cancer research, summarizes the mechanisms of ferroptosis induction and defense, analyzes its roles and mechanisms in tumor suppression and tumor immunity, and explores therapeutic strategies targeting ferroptosis in cancer.

NATURE REVIEWS CANCER (2022)

Review Oncology

Connecting copper and cancer: from transition metal signalling to metalloplasia

Eva J. Ge et al.

Summary: Copper is a essential nutrient with both beneficial and toxic properties to cells. Recent progress in transition metal signaling has led to new connections between researchers from different disciplines, with potential for translating basic research into clinical therapies for diseases. The relationship between copper and cancer is particularly important, with opportunities for leveraging disease vulnerabilities through copper-dependent signaling pathways.

NATURE REVIEWS CANCER (2022)

Review Biochemistry & Molecular Biology

Copper metabolism as a unique vulnerability in cancer

Vinit C. Shanbhag et al.

Summary: Over the past 25 years, significant progress has been made in identifying and characterizing proteins that regulate the uptake, intracellular trafficking and export of copper. While copper is essential for growth and development in humans and other mammals, it is also a limiting nutrient for cancer cell growth and proliferation. Oral copper chelators have been shown to have anti-neoplastic and anti-metastatic effects in animals and humans.

BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH (2021)

Article Biotechnology & Applied Microbiology

Mitochondrial copper depletion suppresses triple-negative breast cancer in mice

Liyang Cui et al.

Summary: The research developed a mitochondria-targeted copper-depleting nanoparticle that effectively inhibited the growth of triple-negative breast cancer cells and improved survival rates in mouse models. By depriving copper within cancer cells, this approach induced metabolic changes and apoptosis, highlighting its potential clinical relevance.

NATURE BIOTECHNOLOGY (2021)

Review Biochemistry & Molecular Biology

Mitochondrial Mechanisms of Necroptosis in Liver Diseases

Chen Xue et al.

Summary: Necroptosis is a common form of programmed cell death in the liver, activated by ligands of death receptors to form the necrosome complex. Mitochondrial-mediated necroptosis enhances oxidative respiration and generates reactive oxygen species, affecting cell susceptibility to necroptosis and interacting with mitochondrial components.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2021)

Article Cell Biology

Inhibiting NLRP3 inflammasome activation prevents copper-induced neuropathology in a murine model of Wilson's disease

Jianjian Dong et al.

Summary: The study demonstrates that copper-mediated neuroinflammation is associated with the activation of the NLRP3 inflammasome, contributing to progressive neuropathology in a murine model of WD. Blocking the activation of the NLRP3 inflammasome effectively mitigates cognitive decline, locomotor behavior impairment, and neurodegeneration in the mice.

CELL DEATH & DISEASE (2021)

Article Chemistry, Medicinal

Visualization of Receptor-Interacting Protein Kinase 1 (RIPK1) by Brain Imaging with Positron Emission Tomography

Yu Lan et al.

Summary: The study developed the first PET radiotracer [F-18]CNY-07 for RIPK1/necroptosis brain imaging in rodents, which can penetrate the blood-brain barrier and showed binding specificity in animal brains. The radiotracer has the potential to be a valuable research tool for studying RIPK1-related neurological disorders in animals and potentially humans.

JOURNAL OF MEDICINAL CHEMISTRY (2021)

Article Multidisciplinary Sciences

Disulfiram and copper combination therapy targets NPL4, cancer stem cells and extends survival in a medulloblastoma model

Riccardo Serra et al.

Summary: This study evaluated the safety and efficacy of Disulfiram (DSF) and Copper (Cu++) in treating pediatric medulloblastoma (MB), showing significant cytotoxic effects and anti-cancer stem cell properties in vitro and in vivo experiments.

PLOS ONE (2021)

Article Multidisciplinary Sciences

Copper depletion modulates mitochondrial oxidative phosphorylation to impair triple negative breast cancer metastasis

Divya Ramchandani et al.

Summary: Copper chelation reduces TNBC metastasis by inactivating Complex IV in sensitive SOX2/OCT4+ cells, showing potential to enrich patient populations in next-generation therapeutic trials.

NATURE COMMUNICATIONS (2021)

Review Chemistry, Medicinal

Copper: An Intracellular Achilles' Heel Allowing the Targeting of Epigenetics, Kinase Pathways, and Cell Metabolism in Cancer Therapeutics

Filip Michniewicz et al.

Summary: Copper plays a crucial role in cancer progression by influencing cell processes, and overcoming drug resistance and relapse may require developing broader molecular targeting strategies. Overcoming these limitations may involve using copper chelating agents to simultaneously target multiple cancer treatment mechanisms.

CHEMMEDCHEM (2021)

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Copper biology

Tiffany Tsang et al.

CURRENT BIOLOGY (2021)

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Overcoming the compensatory elevation of NRF2 renders hepatocellular carcinoma cells more vulnerable to disulfiram/copper-induced ferroptosis

Xueying Ren et al.

Summary: DSF/Cu selectively exerts efficient cytotoxic effect on HCC cells, inhibits migration, invasion, and angiogenesis of HCC cells, impairs mitochondrial homeostasis, increases free iron pool, enhances lipid peroxidation, and eventually results in ferroptotic cell death. Inhibition of NRF2 elevation strengthens HCC cells more vulnerable to DSF/Cu induced ferroptosis.

REDOX BIOLOGY (2021)

Article Biochemistry & Molecular Biology

Impact of Differentiated Macrophage-Like Cells on the Transcriptional Toxicity Profile of CuO Nanoparticles in Co-Cultured Lung Epithelial Cells

Matthias Hufnagel et al.

Summary: This study demonstrates that co-cultures of epithelial and immune cells can reveal additional pro-inflammatory responses of CuO nanoparticles on epithelial cells beyond the known mode of action. Using an advanced in vitro model, it extends the detection of cellular effects provoked by nanomaterials by an immunological response and emphasizes the importance of using such models to address a more comprehensive mode of action.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2021)

Article Engineering, Environmental

Exposure to copper induces mitochondria-mediated apoptosis by inhibiting mitophagy and the PINK1/parkin pathway in chicken ( Gallus gallus ) livers

Fan Yang et al.

Summary: The study found that Cu exposure can induce mitophagy in chicken livers through the PINK1/Parkin pathway, and that mitophagy may attenuate Cu-induced mitochondrial apoptosis.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Biochemistry & Molecular Biology

mtROS-mediated Akt/AMPK/mTOR pathway was involved in Copper-induced autophagy and it attenuates Copper-induced apoptosis in RAW264.7 mouse monocytes

Qin Luo et al.

Summary: Copper is a trace element necessary in animals and humans, but excessive copper can be toxic to immunocytes, leading to apoptosis and autophagy. Copper induces autophagy through the Akt/AMPK/mTOR pathway and increases autophagy through an mtROS-dependent signaling pathway. Autophagy activation potentially improves cell apoptosis induced by copper.

REDOX BIOLOGY (2021)

Article Cell Biology

Mitochondrial regulation of ferroptosis

Boyi Gan

Summary: Mitochondria play crucial roles in driving and protecting cells in ferroptosis by actively regulating the process and providing defense mechanisms. A comprehensive understanding of mitochondrial functions holds important implications for unraveling mysteries in the field of ferroptosis.

JOURNAL OF CELL BIOLOGY (2021)

Article Oncology

Elesclomol-induced increase of mitochondrial reactive oxygen species impairs glioblastoma stem-like cell survival and tumor growth

Mariachiara Buccarelli et al.

Summary: Elesclomol shows effective cell death induction on glioblastoma stem-like cells and GSC-derived endothelial cells, with potential as a therapeutic agent for the management of glioblastoma.

JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH (2021)

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A tandem activation of NLRP3 inflammasome induced by copper oxide nanoparticles and dissolved copper ion in J774A.1 macrophage

Xiaoqi Tao et al.

Summary: CuONPs exposure induces inflammation in J774A.1 macrophages through NLRP3 inflammasome activation and copper ion-induced oxidative stress. CuONPs also trigger the expression of IL-1β by activating NF-κB through the TLR4 signaling pathway.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Elesclomol induces copper-dependent ferroptosis in colorectal cancer cells via degradation of ATP7A

Wei Gao et al.

Summary: Elesclomol inhibits colorectal cancer by inducing copper overload, promoting oxidative stress, and regulating ferroptosis through targeting ATP7A.

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Recent Advances in Repurposing Disulfiram and Disulfiram Derivatives as Copper-Dependent Anticancer Agents

Vinodh Kannappan et al.

Summary: Copper plays a key role in cancer progression and copper-based complexes are being investigated as novel anticancer drugs. The combination of DSF with copper has shown great anticancer potential, but DSF has proven unsuccessful in clinical trials, likely due to poor stability of the currently used oral version of DSF.

FRONTIERS IN MOLECULAR BIOSCIENCES (2021)

Article Biochemistry & Molecular Biology

Copper metabolism in Saccharomyces cerevisiae: an update

Hua Shi et al.

Summary: Copper is an essential element in all forms of life, but excess copper ions can be harmful to cells. Saccharomyces cerevisiae is commonly used to study copper metabolism, and mechanisms such as high-affinity transporters and chaperones play a crucial role in maintaining copper homeostasis within cells.

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Serum Copper and Zinc Levels in Patients with Endometrial Cancer

Tolga Atakul et al.

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Mechanisms of Mitochondrial Iron-Sulfur Protein Biogenesis

Roland Lill et al.

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J. Grace Nirmala et al.

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Old wine in new bottles: Advanced drug delivery systems for disulfiram-based cancer therapy

Anne McMahon et al.

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Copper Induces Oxidative Stress and Apoptosis in the Mouse Liver

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Copper induce zebrafish retinal developmental defects via triggering stresses and apoptosis

Guang Zhao et al.

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Metallothioneins regulate ATP7A trafficking and control cell viability during copper deficiency and excess

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Mohammad-Reza Sepand et al.

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Copper bioavailability is a KRAS-specific vulnerability in colorectal cancer

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Grazyna Gromadzka et al.

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Serum copper and zinc levels in breast cancer: A meta-analysis

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Altered copper homeostasis underlies sensitivity of hepatocellular carcinoma to copper chelation

Caroline Davis et al.

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