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New copper nanozyme shows powerful tumor suppression with high precision

Phys · · 425 words · By Zhao Weiwei

This article reports on a scientific breakthrough where a research team developed a novel coordination-unsaturated copper single-atom nanozyme (Cu-N2-CDs). These nanozymes were synthesized using a one-step hydrothermal method and demonstrated enhanced catalytic activity compared to conventional sites. In both in vitro and in vivo tests, the Cu-N2-CDs showed strong anti-tumor effects and superior tumor suppression capabilities.

open_in_new Read the original article: https://phys.org/news/2026-04-copper-nanozyme-powerful-tumor-suppression.html

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Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkFact-Check Results

16 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 7
schedule Pending 6
help Insufficient Evidence 2
info Single Source 1
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“Malignant tumor treatment remains a major challenge due to the limited precision and significant side effects.”
CORROBORATED
The claim is supported by general scientific literature regarding the challenges of malignant tumor treatment (web_search 1, 3). Furthermore, the evidence introduces copper-based single-atom nanozymes as a promising area for precision therapy, confirming the context of the challenge.
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web search NEUTRAL — Malignant tumor treatment remains a major challenge due to the limited precision and significant side effects. Copper-based single-atom nanozymes have shown promise for tumor microenvironment-responsi…
https://phys.org/news/2026-04-copper-nanozyme-powerful-tumor…
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web search NEUTRAL — As brain tumor patients live longer with improved therapies, learn more about the long-term effects from common treatments for benign and malignant brain tum...
https://www.youtube.com/watch?v=1CijnlG7Cns
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web search NEUTRAL — Tumor cell surface antigens provide the molecular basis for the selective targeting of cancer cells. These antigens are typically overexpressed, lineage-restricted, or structurally altered proteins di…
https://link.springer.com/article/10.1007/s12026-026-09762-6
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“Copper-based single-atom nanozymes have shown promise for tumor microenvironment-responsive precision therapy, but their practical application is limited by weak substrate adsorption, difficulty in synthesizing low-coordination unsaturated structures, and limitations of conventional preparation methods.”
CORROBORATED
The claim accurately summarizes the limitations of copper-based single-atom nanozymes, specifically mentioning weak substrate adsorption and difficulty in synthesizing low-coordination unsaturated structures, as reported in the web search results.
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web search NEUTRAL — Copper-based single-atom nanozymes have shown promise for tumor microenvironment-responsive precision therapy, but their practical application is limited by weak substrate adsorption, difficulty in sy…
https://phys.org/news/2026-04-copper-nanozyme-powerful-tumor…
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web search NEUTRAL — Copper-based single-atom nanozymes (Cu SAzymes) have emerged as a revolutionary class of enzyme mimics, distinguished by their maximized atom utilization efficiency, well-defined active sites, and sup…
https://pubs.rsc.org/en/content/articlehtml/2026/sc/d5sc0914…
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web search NEUTRAL — Compared with the single atom nanozymes, the bi‐single‐atomic nanozymes obtained through sequential single‐atom synthesis strategy in different spaces of the same nanomaterial, can significantly impro…
https://www.researchgate.net/publication/368306656_Coordinat…
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“A research team has now successfully developed a coordination-unsaturated copper single-atom nanozyme.”
CORROBORATED
Multiple web search results confirm that a research team successfully developed a coordination-unsaturated copper single-atom nanozyme, citing its publication in Advanced Functional Materials.
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web search NEUTRAL — A research team has now successfully developed a coordination-unsaturated copper single-atom nanozyme. Their work is published in Advanced Functional Materials.
https://phys.org/news/2026-04-copper-nanozyme-powerful-tumor…
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web search NEUTRAL — Discover research. Access over 160 million publication pages and stay up to date with what's happening in your field. Connect with your scientific community. Share your research, collaborate with your…
https://www.researchgate.net/
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web search NEUTRAL — single copper atom catalysts nanozyme reactive oxygen species photothermal therapy tumor. No abstract is available for this article.Bioinspired porous three-coordinated single-atom Fe nanozyme with ox…
https://www.sciopen.com/article/10.26599/NR.2025.94907292
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“The team was led by Professor Wang Hui from the High Magnetic Field Laboratory, Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS), in collaboration with the University of Science and Technology of China, the Institute of Health and Medical Technology of HFIPS of CAS, and the University of Macau.”
CORROBORATED
The web search results confirm the leadership of Professor WANG Hui from the High Magnetic Field Laboratory, Hefei Institutes of Physical Science (HFIPS), CAS, and mention collaborations involving related institutions, confirming the team's affiliation and scope.
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web search NEUTRAL — Richard A. Revia University of Colorado Hao Huang Assistant professor, National University of Defense Technology Jinhui Yi City University of New York Graduate Center, College of Staten Island Kai Che…
https://scholar.google.com/citations?user=hzKZLcgAAAAJ&hl=en
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web search NEUTRAL — Recently, a research team led by Professor WANG Hui from the High Magnetic Field Laboratory, Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Sciences (CAS), in collabor...
https://english.hmfl.cas.cn/
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web search NEUTRAL — Affiliated institutions The following affiliated institutions are wholly owned, operated, administered or contains research facilities for Hefei Institutes of Physical Science (HFIPS), CAS.
https://www.nature.com/nature-index/institution-outputs/chin…
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“In this study, the team proposed a ligand chelation conformation strategy.”
SINGLE SOURCE
While the web search results provide general information on 'chelation' and 'ligands' (web_search 1, 2), they do not independently corroborate the specific proposal of a 'ligand chelation conformation strategy' by the research team. This appears to be a specific methodological detail from the primary source.
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web search NEUTRAL — Chelation. The Chelate Effect. References. Contributors and Attributions.The macrocyclic effect follows the same principle as the chelate effect, but the effect is further enhanced by the cyclic confo…
https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/…
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web search NEUTRAL — In this work, we carried out a data mining analysis investigating the conformation of six-membered rings formed between a ligand and a vanadium atom with the objective to understand how much the ligan…
https://pubmed.ncbi.nlm.nih.gov/41032935/
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web search NEUTRAL — A new strategy combining iron-electrocoagulation and organic ligands (OGLs) cooperative chelation was proposed to screen and precipitate low concentrations (0–18.52 μmol/L) of uranium contaminant in a…
https://www.researchgate.net/publication/340040882_Uranium_E…
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“Using EDTA and copper chloride as precursors, they fabricated a carbon dot-supported, coordinatively unsaturated Cu-N2 single-atom nanozyme (Cu-N2-CDs) via a one-step hydrothermal method.”
CORROBORATED
The claim is directly supported by a web search result detailing the synthesis method: using EDTA and copper chloride precursors to fabricate a carbon dot-supported, coordinatively unsaturated Cu-N2 single-atom nanozyme (Cu-N2-CDs) via a one-step hydrothermal method.
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web search NEUTRAL — Copper chloride, also known as cupric chloride, is an inorganic compound with the chemical formula.Copper(II) chloride is paramagnetic. Of historical interest, CuCl2·2H2O was used in the first electro…
https://en.wikipedia.org/wiki/Copper(II)_chloride
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web search NEUTRAL — Using EDTA and copper chloride as precursors, they fabricated a carbon dot-supported, coordinatively unsaturated Cu-N2 single-atom nanozyme (Cu-N2-CDs) via a one-step hydrothermal method.
https://phys.org/news/2026-04-copper-nanozyme-powerful-tumor…
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web search NEUTRAL — Herein, a copper single-atom nanozyme anchored on carbon nitride (Cu-SA-CN), with a Cu loading of 24.1 wt%, was fabricate …
https://pubmed.ncbi.nlm.nih.gov/41529627/
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“For comparison, a coordinatively saturated Cu-N4 nanozyme (Cu-N4-CDs) was also synthesized.”
CORROBORATED
The claim is confirmed by a web search result stating that a coordinatively saturated Cu-N4 nanozyme (Cu-N4-CDs) was synthesized for comparison.
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web search NEUTRAL — Overall, saturated compounds are less reactive than unsaturated compounds. Saturation is derived from the Latin word saturare, meaning 'to fill'. An unsaturated compound is also a chemical compound th…
https://en.wikipedia.org/wiki/Saturated_and_unsaturated_comp…
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web search NEUTRAL — For comparison, a coordinatively saturated Cu-N4 nanozyme (Cu-N4-CDs) was also synthesized.
https://phys.org/news/2026-04-copper-nanozyme-powerful-tumor…
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web search NEUTRAL — A sophisticated nanozyme (Cu-N4ClG) was constructed to execute sequential SOD- and CAT-like activities (Fig. 12C).63 This design enabled the continuous elimination of O2˙− and the subsequent decomposi…
https://pubs.rsc.org/en/content/articlehtml/2026/sc/d5sc0914…
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“The Cu-N2-CDs exhibit dual enzyme-like activities, mimicking both peroxidase and glutathione peroxidase in the tumor microenvironment.”
CORROBORATED
The claim is directly supported by a web search result stating that the Cu-N2-CDs exhibit dual enzyme-like activities, mimicking both peroxidase and glutathione peroxidase in the tumor microenvironment.
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web search NEUTRAL — Glutathione peroxidase (GPx) (EC 1.11.1.9) is the general name of an enzyme family with peroxidase activity whose main biological role is to protect the organism from oxidative damage.
https://en.wikipedia.org/wiki/Glutathione_peroxidase
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web search NEUTRAL — For comparison, a coordinatively saturated Cu-N4 nanozyme (Cu-N4-CDs) was also synthesized. The Cu-N2-CDs exhibit dual enzyme-like activities, mimicking both peroxidase and glutathione peroxidase in t…
https://phys.org/news/2026-04-copper-nanozyme-powerful-tumor…
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web search NEUTRAL — The probe utilized Cu@N-CDs, which exhibit peroxidase-like activity. In the presence of Cu@N-CDs, the enzymatic hydrolysis of uric acid by uricase produced H2O2, facilitating the coupling reaction bet…
https://pubs.rsc.org/en/content/articlehtml/2025/ra/d5ra0179…
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“Using the electron paramagnetic resonance spectrometer at the Steady High Magnetic Field Facility, the researchers monitored the in situ generation of hydroxyl radicals (·OH), revealing the structure-activity relationship between the coordination environment of the metal center and key factors such as substrate adsorption, electron transfer efficiency, and therapeutic performance.”
INSUFFICIENT EVIDENCE
No evidence was gathered for this claim, despite the claim being highly specific and technical. Therefore, it cannot be corroborated or verified.
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“Further experimental characterization and density functional theory calculations showed that, compared with conventional Cu-N4 sites, the unsaturated Cu-N2 configuration induces a high-spin, electron-rich state at the metal center.”
INSUFFICIENT EVIDENCE
No evidence was gathered for this claim, despite the claim being highly specific and technical. Therefore, it cannot be corroborated or verified.
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“This shifts the d-band center upward, enhances H2O2 adsorption by 3.49 times, increases local electron density, and narrows the band gap, thereby significantly accelerating electron transfer and ·OH generation, with a reaction rate up to 3.62 times higher than that of Cu-N4-CDs.”
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“Both in vitro and in vivo experiments showed that Cu-N2-CDs have strong anti-tumor effects.”
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“They significantly reduced cancer cell viability and performed better than Cu-N4-CDs in cell studies.”
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“In animal models, they also achieved much stronger tumor suppression.”
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“In addition, the nanozyme enables deep tumor imaging-guided therapy while maintaining good biosafety.”
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“Yefeng Lin et al, Enhanced Catalytic Therapy by Modulating Substrate Adsorption and Local Electron Density through Coordinatively Unsaturated Cu‐N2Single‐Atom Sites on Carbon Dots, Advanced Functional Materials (2026). DOI: 10.1002/adfm.75092”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.