Evidence map›Paper›PMID 12409609›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2002

Confirmation by FRET in individual living cells of the absence of significant amyloid beta -mediated caspase 8 activation.

Reiko Onuki, Akira Nagasaki, Hiroaki Kawasaki, Tadashi Baba, Taro Q P Uyeda, Kazunari Taira

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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

22 citing papers in PubMed.

  1. Review
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  17. Measuring apoptosis at the single cell level.Methods (San Diego, Calif.) · 2008
    Review
  18. Review
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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

6 authors.

Reiko OnukiGene Function Research Laboratory, National Institute of Advanced Industrial Science and Technology, Central 4, 1-1-1 Higashi, Tsukuba Science City 305-8562, Japan.
Akira Nagasaki
Hiroaki Kawasaki
Tadashi Baba
Taro Q P Uyeda
Kazunari Taira

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

When cells are exposed to death-inducing molecules such as tumor necrosis factor-alpha or Fas, caspase 8 is activated and cleaves an apoptotic facilitator, Bid, that is a member of the Bcl-2 family. After additional modification, the C-terminal moiety of Bid is translocated to the mitochondria and induces the release of cytochrome c into the cytoplasm. In an attempt to directly observe the cleavage of Bid and the following events in living cells, we constructed a vector that encoded Bid fused with yellow fluorescent protein (YFP) and cyan fluorescent protein (CFP) (YFP-Bid-CFP). On expression of YFP-Bid-CFP in mammalian cells, we were able to observe the efficient transfer of energy from excited CFP to YFP within the YFP-Bid-CFP molecule and, importantly, the fusion protein YFP-Bid-CFP was fully functional in cells. When YFP-Bid-CFP was cleaved by caspase 8, on activation by anti-Fas Abs but not by Abeta or tunicamycin, no such transfer of energy was detected. To our knowledge, this is the first report of (i) visualization of the activation of Bid by proteolytic cleavage, with direct observation of the cleavage of YFP-Bid-CFP in the cytoplasm and subsequent translocation of the cleaved Bid to mitochondria and (ii) the absence of Abeta- or tunicamycin-mediated significant activation of caspase 8 in individual living cells.

Indexed as

3T3 CellsAmyloid beta-PeptidesAnimalsApoptosisBacterial ProteinsBH3 Interacting Domain Death Agonist ProteinCarrier ProteinsCaspase 8Caspase 9CaspasesChlorocebus aethiopsCloning, MolecularCOS CellsDNA, ComplementaryEnzyme ActivationGene LibraryAmyloid beta-PeptidesBacterial ProteinsBH3 Interacting Domain Death Agonist ProteinBID protein, humanBid protein, mouseCarrier ProteinsCASP8 protein, humanCasp8 protein, mouseCASP9 protein, humanCasp9 protein, mouseCaspase 8Caspase 9CaspasesDNA, ComplementaryGreen Fluorescent ProteinsLuminescent ProteinsProto-Oncogene Proteins c-bcl-2yellow fluorescent protein, Bacteria

Identifiers

PMID12409609
PMCPMC137485

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.