Copper redox state in cells and aquatic organisms: Implication for toxicity

Area of Science:

• Biochemistry
• Toxicology
• Cell Biology

Background:

• Copper's redox state is crucial in biology and toxicology, yet detection limitations hinder research.
• Copper homeostasis involves complex absorption, translocation, utilization, storage, and elimination processes.
• Cuproptosis, a novel cell death mechanism triggered by excess copper, leads to proteotoxic stress.

Purpose of the Study:

• To review copper homeostasis, cuproptosis, and advanced detection techniques.
• To explore the roles of copper(I) and copper(II) in biological systems and diseases.
• To bridge research gaps in understanding copper's bioaccumulation and toxicity.

Main Methods:

• Review of existing literature on copper homeostasis and cuproptosis.
• Discussion of advanced detection methods, including X-ray absorption near-edge structure (XANES) and chemosensors.
• Analysis of in-situ imaging techniques for copper detection.

Main Results:

• Copper homeostasis mechanisms are multifaceted, impacting cellular functions.
• Cuproptosis offers a potential explanation for diseases like Wilson disease and toxic effects.
• Advanced techniques like XANES and chemosensors enable better detection of copper species.

Conclusions:

• Understanding copper's redox state and homeostasis is vital for biological and toxicological research.
• Cuproptosis represents a significant area for further investigation into copper toxicity and disease.
• Improved detection methods are essential for elucidating copper's role in organismal health and disease.