Evidence map›Paper›PMID 21460622›Full record

ArticleAutophagy2011

Characterization of macroautophagic flux in vivo using a leupeptin-based assay.

Jeffrey Haspel, Rahamthulla S Shaik, Emeka Ifedigbo, Kiichi Nakahira, Tamas Dolinay, Joshua A Englert, Augustine M K Choi

Open access · bronzeAbstract read
In one paragraph

Article in Autophagy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed, 4 pooled it
6.2field-weighted citation impact, top 3% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

100 citing papers in PubMed, 4 syntheses or guidelines pooled it, 145 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Guideline
  4. Guideline
  5. Article
  6. Article
  7. Article
  8. Loss of ovarian function prevents exercise-induced activation of hepatic mitophagic flux.American journal of physiology. Endocrinology and metabolism · 2025
    Article
  9. Article
  10. Assessment of Autophagy in Leishmania Parasites.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. Chloroquine impairs maximal transdiaphragmatic pressure generation in old mice.Journal of applied physiology (Bethesda, Md. : 1985) · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

40 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Jeffrey HaspelDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA USA.
Rahamthulla S Shaik
Emeka Ifedigbo
Kiichi Nakahira
Tamas Dolinay
Joshua A Englert
Augustine M K Choi
Brigham and Women's Hospital · USHouston Methodist · USUniversity of Tennessee at Chattanooga · US

Funding

RESPIRATORY RESEARCHT32HL007633 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI George R Washko · 1985 to 2026
$14.9M
Autophagy in COPDR03HL097005 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI CHOI, AUGUSTINE M, WASHKO, GEORGE R · 2009 to 2010
$178k
NHLBI NIH HHS R03 HL097005NHLBI NIH HHS R03HL097005NHLBI NIH HHS T32 HL007633
6 · The paper itself

Abstract

Macroautophagy is a highly conserved catabolic process that is crucial for organ homeostasis in mammals. However, methods to directly measure macroautophagic activity (or flux) in vivo are limited. In this study we developed a quantitative macroautophagic flux assay based on measuring LC3b protein turnover in vivo after administering the protease inhibitor leupeptin. Using this assay we then characterized basal macroautophagic flux in different mouse organs. We found that the rate of LC3b accumulation after leupeptin treatment was greatest in the liver and lowest in spleen. Interestingly we found that LC3a, an ATG8/LC3b homologue and the LC3b-interacting protein p62 were degraded with similar kinetics to LC3b. However, the LC3b-related proteins GABARAP and GATE-16 were not rapidly turned over in mouse liver, implying that different LC3b homologues may contribute to macroautophagy via distinct mechanisms. Nutrient starvation augmented macroautophagic flux as measured by our assay, while refeeding the animals after a period of starvation significantly suppressed flux. We also confirmed that beclin 1 heterozygous mice had reduced basal macroautophagic flux compared to wild-type littermates. These results illustrate the usefulness of our leupeptin-based assay for studying the dynamics of macroautophagy in mice.

Indexed as

AutophagyAnimalsApoptosis Regulatory ProteinsBeclin-1Dose-Response Relationship, DrugHeterozygoteHomeostasisLactosylceramidesLeupeptinsLiverLysosomesMaleMiceMice, Inbred C57BLSpleenTime FactorsApoptosis Regulatory ProteinsBeclin-1Becn1 protein, mouseLactosylceramideslactotriaosylceramideleupeptinLeupeptins

Identifiers

PMID21460622
PMCPMC3127049
OpenAlexW1966759451

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.