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Consequently, there is a pressing need for sensitive methodologies capable of quantitatively mapping local metal ion concentrations in live cells, aiming to unravel potential mechanisms underlying neurological disorders. DNAzymes have emerged as versatile tools for metal ion detection in live cells, owing to their specificity and other inherent advantages. Efforts to broaden their utility have focused on enhancing the stability and sensitivity of DNAzymes. Inspired by the beneficial effects of molecular chaperones on the stability and functionality of proteins, we present in this study the development of tetrahedral DNA frameworks (TDF) as chaperones for DNAzymes, aiming at enhancing the stability and activity of DNAzymes. Integration of TDF with DNAzymes is shown to significantly enhance metal ion detection performance, resulting in elevated stability and a two\u2010fold increase in sensitivity, attributed to alterations in the local net charge induced by TDF. In vitro investigations demonstrate that the nanodevice developed here faithfully maps Cu\n                    <jats:sup>2+<\/jats:sup>\n                    concentrations within a range of 0\u201310\u00a0\u00b5M on the membrane of neuronal cells, meeting the requirements for Cu\n                    <jats:sup>2+<\/jats:sup>\n                    sensing under both physiological and pathological conditions. This work presents an easily adaptable approach to enhance the performance of DNAzymes and lays the foundations for the development of other DNAzyme\u2010based sensitive detection nanodevices.\n                  <\/jats:p>","DOI":"10.1002\/anie.202506640","type":"journal-article","created":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T00:04:55Z","timestamp":1751414695000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Framework Nucleic Acid\u2010Mediated DNAzyme Chaperoning for Sensitive Trace Metal Ion Mapping on Live Neuronal Cell Membranes"],"prefix":"10.1002","volume":"64","author":[{"given":"Tianqi","family":"Xu","sequence":"first","affiliation":[{"name":"Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine Department of Neurosurgery Renji Hospital School of Medicine Shanghai Jiao Tong University  Shanghai 200127 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Shanghai Jiao Tong University  Shanghai 200127 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine Department of Neurosurgery Renji Hospital School of Medicine Shanghai Jiao Tong University  Shanghai 200127 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tao","family":"Lv","sequence":"additional","affiliation":[{"name":"Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine Department of Neurosurgery Renji Hospital School of Medicine Shanghai Jiao Tong University  Shanghai 200127 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yueyue","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine Department of 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Molecules Zhangjiang Institute for Advanced Study and National Center for Translational Medicine Shanghai Jiao Tong University  Shanghai 200240 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingqiang","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Synergistic Chem\u2010Bio Synthesis School of Chemistry and Chemical Engineering New Cornerstone Science Laboratory Frontiers Science Center for Transformative Molecules Zhangjiang Institute for Advanced Study and National Center for Translational Medicine Shanghai Jiao Tong University  Shanghai 200240 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaohua","family":"Zhang","sequence":"additional","affiliation":[{"name":"Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine Department of Neurosurgery Renji Hospital School of Medicine Shanghai Jiao Tong University  Shanghai 200127 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