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Diseases

Revealing the Interplay of Intraorganellar O2*- and ATP in Alzheimer's Disease

Strategic Insights

— 2 min read

New research has shed light on the complex mechanisms underlying Alzheimer's disease (AD), a neurodegenerative disorder characterized by progressive cognitive decline. Investigators at Nanjing University, in collaboration with several international institutions, have identified the dysregulation of superoxide anion (O2*- ) and adenosine triphosphate (ATP) levels within specific subcellular organelles as a key contributor to brain aging-induced AD. Their findings provide new insights into the interplay of intraorganellar O2*- and ATP in AD pathogenesis, highlighting the potential for novel diagnostic and therapeutic strategies.

Key Takeaways:

  • The research identified brain aging as a primary risk factor for AD, with dysregulation of O2*- and ATP levels within specific subcellular organelles as a key contributor to the disease.
  • Two structurally analogous but organelle-specific dual-responsive fluorescent probes ( and ) were introduced as effective tools to explore the relevant mechanisms of AD.
  • Utilizing and , the researchers observed coordinated changes in the levels of O2*- and ATP within mitochondria and lysosomes of mouse hippocampal neuronal cells (HT22), demonstrating the probes' capability for simultaneous analysis and detection of O2*- and ATP without spectral interference.
  • Senescent HT22 cells were found to be more susceptible to the adverse effects of the amyloid-β (Ab) protein, leading to massive O2*- bursts and concomitant ATP depletion.
  • The variation of O2*- emerged earlier than that of ATP during the above process, highlighting the complex interplay of intraorganellar O2*- and ATP in AD pathogenesis.
  • The research applied in vivo and ex vivo imaging, revealing age-dependent alterations in O2*- and ATP levels of AD mice brains, which elucidated the special mechanisms of action and influence in AD pathogenesis.
  • The findings demonstrate the potential for novel diagnostic and therapeutic strategies targeting the interplay of intraorganellar O2*- and ATP in AD.

Statistics:

  • The research involved the study of mouse hippocampal neuronal cells (HT22).
  • The probes and were found to have an excellent ability for simultaneous analysis and detection of O2*- and ATP without spectral interference.
  • The variation of O2*- emerged earlier than that of ATP during the AD-related process.
  • The imaging data revealed age-dependent alterations in O2*- and ATP levels of AD mice brains, indicating a significant impact of age on the disease's progression.

Sources:

  • Revealing the Interplay of Intraorganellar O2*- and ATP in Brain Aging-Related Alzheimer's Disease via Unimolecular Dual-Responsive Probes. Analytical Chemistry, 2025.
  • NewsRx. Research Conducted at Nanjing University Has Provided New Information about Alzheimer Disease (Revealing the Interplay of Intraorganellar O2*- and ATP in Brain Aging-Related Alzheimer's Disease via Unimolecular Dual-Responsive Probes). Health & Medicine Week. October 17, 2025; p 5328.

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