Cited by 60Mitochondrial Function and PathologyIon Channels and ReceptorsCalcium signaling and nucleotide metabolism

Study of Endoplasmic Reticulum and Mitochondria Interactions by In Situ Proximity Ligation Assay in Fixed Cells

Open access
Tubbs, Emily, Rieusset, Jennifer·2016·Journal of Visualized Experiments

Abstract

Structural interactions between the endoplasmic reticular (ER) and mitochondrial membranes, in domains known as mitochondria-associated membranes (MAM), are crucial hubs for cellular signaling and cell fate. Particularly, these inter-organelle contact sites allow the transfer of calcium from the ER to mitochondria through the voltage-dependent anion channel (VDAC)/glucose-regulated protein 75 (GRP75)/inositol 1,4,5-triphosphate receptor (IP3R) calcium channeling complex. While this subcellular compartment is under intense investigation in both physiological and pathological conditions, no simple and sensitive method exists to quantify the endogenous amount of ER-mitochondria contact in cells. Similarly, MAMs are highly dynamic structures, and there is no suitable approach to follow modifications of ER-mitochondria interactions without protein overexpression. Here, we report an optimized protocol based on the use of an in situ proximity ligation assay to visualize and quantify endogenous ER-mitochondria interactions in fixed cells by using the close proximity between proteins of the outer mitochondrial membrane (VDAC1) and of the ER membrane (IP3R1) at the MAM interface. Similar in situ proximity ligation experiments can also be performed with the GRP75/IP3R1 and cyclophilin D/IP3R1 pairs of antibodies. This assay provides several advantages over other imaging procedures, as it is highly specific, sensitive, and suitable to multiple-condition testing. Therefore, the use of this in situ proximity ligation assay should be helpful to better understand the physiological regulations of ER-mitochondria interactions, as well as their role in pathological contexts.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.3791/54899

Cites

20 of 20 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • VDAC1 and IP3R1 proximity were measured using an in situ proximity ligation assay that was thoroughly validated previously.

    “VDAC1 (ab14734) and IP3R1 (sc28614) proximity were measured using an in situ proximity ligation assay [PLA; Sigma-Aldrich Duolink anti-rabbit plus (DUO92002) and anti-mouse minus (DUO92004) kits] to detect and quantify SR-mitochondria interactions, as described and thoroughly validated previously (Tubbs and Rieusset, 2016; Tubbs et al., 2014).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Tubbs, E., & Rieusset, J.
Affiliations
  • Lund University (SE)
  • Lyon 1 Université (FR)
Venue
Journal of Visualized Experiments
Published
2016-12-10
Issue
118
Pages
np
ISSN
1940-087X (ISSN-L)
OpenAlex
W2560338825
Cited by
60
References
20
Citations by year
2026: 3 · 2025: 4 · 2024: 10 · 2023: 4 · 2022: 7 · 2021: 5 · 2020: 6 · 2019: 9 · 2018: 9 · 2017: 3
FWCI
3.64
Type
journal article
Language
en
Open access
Locations
  • Journal of Visualized Experiments (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
Agence Nationale de la Recherche (ANR-11-BSV1-0033, ANR-09-JCJC-0116)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
endoplasmic reticulum-mitochondria interaction, mitochondria-associated membranes, in situ proximity ligation assay, IP3R1, VDAC1, GRP75, cyclophilin D, calcium signaling, fixed cells, subcellular protein localization
MeSH terms
Animals, Biological Assay, Endoplasmic Reticulum, Humans, Intracellular Membranes, Mitochondria, Signal Transduction, Mitochondrial Membranes, Inositol 1,4,5-Trisphosphate Receptors

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review