Ultrasensitive Visual Tracking of Toxic Cyanide Ions in Biological Samples Using Biocompatible Metal–Organic Frameworks Architectures

Islam M. El-Sewify, Mohamed A. Shenashen, Rasha F. El-Agamy, Mohammed S. Selim, Norah F. Alqahtani, Ahmed Elmarakbi, Mitsuhiro Ebara, Mahmoud M. Selim, Mostafa M.H. Khalil, Sherif A. El-Safty*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The extraordinary accumulation of cyanide ions within biological cells is a severe health risk. Detecting and tracking toxic cyanide ions within these cells by simple and ultrasensitive methodologies are of immense curiosity. Here, continuous tracking of ultimate levels of CN-ions in HeLa cells was reported employing biocompatible branching molecular architectures (BMAs). These BMAs were engineered by decorating colorant-laden dendritic branch within and around the molecular building hollows of the geode-shelled nanorods of organic–inorganic Al-frameworks. Batch-contact methods were utilized to assess the potential of hollow-nest architecture for inhibition/evaluation of toxicant CN--ions within HeLa cells. The nanorod BMAs revealed significant potential capabilities in monitoring and tracking of CN ions (88 parts per trillion) in biological trials within seconds. These results demonstrated sufficient evidence for the compatibility of BMAs during HeLa cell exposure. Under specific conditions, the BMAs were utilized for in-vitro fluorescence tracking/sensing of CN in HeLa cells. The cliff swallow nest with massive mouths may have the potential to reduce the health hazards associated with toxicant exposure in biological cells.

Original languageEnglish
Article number133271
JournalJournal of Hazardous Materials
Early online date16 Dec 2023
Publication statusE-pub ahead of print - 16 Dec 2023

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