Evidence map›Paper›PMID 3029140›Full record

ArticleThe Journal of cell biology1987

Microinjection of gelsolin into living cells.

J A Cooper, J Bryan, B Schwab, C Frieden, D J Loftus, E L Elson

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 1987. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
6.0field-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

52 citing papers in PubMed, 142 citations in OpenAlex.

  1. Cytoskeleton-associated gelsolin responds to the midgut distention process in saline meal-fed Aedes aegypti and affects arbovirus dissemination from the midgut.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2024
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  7. Dynamin rings: not just for fission.Traffic (Copenhagen, Denmark) · 2013
    Review
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  11. Glass transition and rheological redundancy in F-actin solutions.Proceedings of the National Academy of Sciences of the United States of America · 2007
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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 at 2 institutions in 2 countries.

J A Cooper
J Bryan
B Schwab
C Frieden
D J Loftus
E L Elson
Institute of Molecular Biology and Biophysics · RUWashington University in St. Louis · US

Funding

CHEMISTRY AND LOCALIZATION OF ACTIN GELLING PROTEINSR01GM026091 · NIGMS · BAYLOR COLLEGE OF MEDICINE · PI BRYAN, JOSEPH · 1985 to 1998
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BIOPHYSICAL STUDIES OF CELL DEFORMABILITYR01GM027160 · NIGMS · WASHINGTON UNIVERSITY · PI ELSON, ELLIOT L. · 1985 to 1986
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NIGMS NIH HHS GM 13332NIGMS NIH HHS GM 26091NIGMS NIH HHS GM 27160
6 · The paper itself

Abstract

Gelsolins are actin-binding proteins that cap, nucleate, and sever actin filaments. Microinjection of cytoplasmic or plasma gelsolin into living fibroblasts and macrophages did not affect the shape, actin distribution, deformability, or ruffling activity of the cells. Gelsolin requires calcium for activity, but the NH2-terminal half is active without calcium. Microinjection of this proteolytic fragment had marked effects: the cells rounded up, stopped ruffling, became soft, and stress fibers disappeared. These changes are similar to those seen with cytochalasin, which also caps barbed ends of actin filaments. Attempts to raise the cytoplasmic calcium concentration and thereby activate the injected gelsolin were unsuccessful, but the increases in calcium concentration were minimal or transient and may not have been sufficient. Our interpretation of these results is that at the low calcium concentrations normally found in cells, gelsolin does not express the activities observed in vitro at higher calcium concentrations. We presume that gelsolin may be active at certain times or places if the calcium concentration is elevated to a sufficient level, but we cannot exclude the existence of another molecule that inhibits gelsolin. Microinjection of a 1:1 gelsolin/actin complex had no effect on the cells. This complex is stable in the absence of calcium and has capping activity but no severing and less nucleation activity as compared with either gelsolin in calcium or the NH2-terminal fragment. The NH2-terminal fragment-actin complex also has capping and nucleating activity but no severing activity. On microinjection it had the same effects as the fragment alone. The basis for the difference between the two complexes is unknown. The native molecular weight of rabbit plasma gelsolin is 82,500, and the extinction coefficient at 280 nm is 1.68 cm2/mg. A new simple procedure for purification of plasma gelsolin is described.

Indexed as

AnimalsBenzofuransBlood PlateletsCalciumCalcium-Binding ProteinsCells, CulturedChick EmbryoFibroblastsFura-2GelsolinHumansMiceMice, Inbred C3HMicrofilament ProteinsMicroinjectionsRabbitsBenzofuransCalciumCalcium-Binding ProteinsFura-2GelsolinMicrofilament Proteins

Identifiers

PMID3029140
PMCPMC2114549
OpenAlexW2067410519

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.