ArticleProceedings of the National Academy of Sciences of the United States of America2023
A molecular rotor FLIM probe reveals dynamic coupling between mitochondrial inner membrane fluidity and cellular respiration.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 31 citations in OpenAlex.
- Organelle Localization-Induced Bio-Orthogonal Polymerization (OLIBOP) for Photostable Super-Resolution Live-Cell Imaging.Advanced healthcare materials · 2026Article
- Saturated cardiolipins are potent disruptors of inner mitochondrial membrane structure and function.bioRxiv : the preprint server for biology · 2026Article
- High-Photostability Perylene-Derived Probe Enables Accurate Dual-Modality Imaging of Mitochondrial Membrane Potential.Journal of fluorescence · 2026Article
- Chemical fluorophores for fluorescence lifetime imaging.Chemical Society reviews · 2026Review
- Imaging mitochondrial membrane potential via concentration-dependent fluorescence lifetime changes.Nature communications · 2025Article
- Single Mitochondrion Morphology-Function Relationship Analysis Using Fluorescent Probes and Artificial Intelligence.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Dynamic Imaging of Lipid Order and Heterogeneous Microviscosity in Mitochondrial Membranes of Potato Tubers Under Abiotic Stress.Membranes · 2025Article
- Coenzyme Q10 Enhances Resilience of Mitochondrial-like Membranes Against Amyloidogenic Peptides.Membranes · 2025Article
- Active control of mitochondrial network morphology by metabolism-driven redox state.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- HBimmCue: A Versatile Fluorescent Probe for Multi-Scale Imaging of Lipid Polarity and Membrane Order in Inner Mitochondrial Membrane.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- Look Beyond Plasma Membrane Biophysics: Revealing Considerable Variability of the Dipole Potential Between Plasma and Organelle Membranes of Living Cells.International journal of molecular sciences · 2025Article
- A Molecular Logic Gate Enables Unconventional Super-resolution Same-Day Imaging of Lysosome Membrane in Live Cells.Analytical chemistry · 2025Article
- Mechanisms underlying targeted mitochondrial therapy for programmed cardiac cell death.Frontiers in physiology · 2025Review
- Organelle-Targeted Laurdans Measure Heterogeneity in Subcellular Membranes and Their Responses to Saturated Lipid Stress.ACS chemical biology · 2024Article
- Fluorescent Molecular Rotors Quantify an Adjuvant-Induced Softening of Plant Wax.Chemical & biomedical imaging · 2024Article
- Organelle-targeted Laurdans measure heterogeneity in subcellular membranes and their responses to saturated lipid stress.bioRxiv : the preprint server for biology · 2024Article
- Dynamic conformational changes of a tardigrade group-3 late embryogenesis abundant protein modulate membrane biophysical properties.PNAS nexus · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The inner mitochondrial membrane (IMM), housing components of the electron transport chain (ETC), is the site for respiration. The ETC relies on mobile carriers; therefore, it has long been argued that the fluidity of the densely packed IMM can potentially influence ETC flux and cell physiology. However, it is unclear if cells temporally modulate IMM fluidity upon metabolic or other stimulation. Using a photostable, red-shifted, cell-permeable molecular-rotor, Mitorotor-1, we present a multiplexed approach for quantitatively mapping IMM fluidity in living cells. This reveals IMM fluidity to be linked to cellular-respiration and responsive to stimuli. Multiple approaches combining in vitro experiments and live-cell fluorescence (FLIM) lifetime imaging microscopy (FLIM) show Mitorotor-1 to robustly report IMM 'microviscosity'/fluidity through changes in molecular free volume. Interestingly, external osmotic stimuli cause controlled swelling/compaction of mitochondria, thereby revealing a graded Mitorotor-1 response to IMM microviscosity. Lateral diffusion measurements of IMM correlate with microviscosity reported via Mitorotor-1 FLIM-lifetime, showing convergence of independent approaches for measuring IMM local-order. Mitorotor-1 FLIM reveals mitochondrial heterogeneity in IMM fluidity; between-and-within cells and across single mitochondrion. Multiplexed FLIM lifetime imaging of Mitorotor-1 and NADH autofluorescence reveals that IMM fluidity positively correlates with respiration, across individual cells. Remarkably, we find that stimulating respiration, through nutrient deprivation or chemically, also leads to increase in IMM fluidity. These data suggest that modulating IMM fluidity supports enhanced respiratory flux. Our study presents a robust method for measuring IMM fluidity and suggests a dynamic regulatory paradigm of modulating IMM local order on changing metabolic demand.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.