Evidence map›Paper›PMID 16316249›Full record

ArticleJournal of the American Chemical Society2005

Light-activated hydrogel formation via the triggered folding and self-assembly of a designed peptide.

Lisa A Haines, Karthikan Rajagopal, Bulent Ozbas, Daphne A Salick, Darrin J Pochan, Joel P Schneider

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Chemical Society, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed
11.9field-weighted citation impact, top 1% 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

83 citing papers in PubMed, 376 citations in OpenAlex.

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  14. EnablingJournal of the American Chemical Society · 2021
    Article
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  19. Current Progress in Cross-Linked Peptide Self-Assemblies.International journal of molecular sciences · 2020
    Review
  20. Article

23 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

6 authors at 2 institutions in 1 country.

Lisa A HainesDepartment of Chemistry and Biochemistry and Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, 19716-2522, USA.
Karthikan Rajagopal
Bulent Ozbas
Daphne A Salick
Darrin J Pochan
Joel P Schneider
Biotechnology Institute · USUniversity of Delaware · US

Funding

Hydrogels from Designed PeptidesR01DE016386 · NIDCR · UNIVERSITY OF DELAWARE · PI POCHAN, DARRIN J · 2005 to 2009
$1.5M
NIDCR NIH HHS R01 DE016386
6 · The paper itself

Abstract

Photopolymerization can be used to construct materials with precise temporal and spatial resolution. Applications such as tissue engineering, drug delivery, the fabrication of microfluidic devices and the preparation of high-density cell arrays employ hydrogel materials that are often prepared by this technique. Current photopolymerization strategies used to prepare hydrogels employ photoinitiators, many of which are cytotoxic and require large macromolecular precursors that need to be functionalized with moieties capable of undergoing radical cross-linking reactions. We have developed a simple light-activated hydrogelation system that employs a designed peptide whose ability to self-assemble into hydrogel material is dependent on its intramolecular folded conformational state. An iterative design strategy afforded MAX7CNB, a photocaged peptide that, when dissolved in aqueous medium, remains unfolded and unable to self-assemble; a 2 wt % solution of freely soluble unfolded peptide is stable to ambient light and has the viscosity of water. Irradiation of the solution (260 < lambda < 360 nm) releases the photocage and triggers peptide folding to produce amphiphilic beta-hairpins that self-assemble into viscoelastic hydrogel material. Circular dichroic (CD) spectroscopy supports this folding and self-assembly mechanism, and oscillatory rheology shows that the resulting hydrogel is mechanically rigid (G' = 1000 Pa). Laser scanning confocal microscopy imaging of NIH 3T3 fibroblasts seeded onto the gel indicates that the gel surface is noncytotoxic, conducive to cell adhesion, and allows cell migration. Lastly, thymidine incorporation assays show that cells seeded onto decaged hydrogel proliferate at a rate equivalent to cells seeded onto a tissue culture-treated polystyrene control surface.

Indexed as

Amino Acid SequenceAnimalsCircular DichroismHydrogelsHydrogen-Ion ConcentrationMiceMolecular Sequence DataNanostructuresNIH 3T3 CellsOsmolar ConcentrationPeptidesPhotochemistryProtein FoldingRheologyHydrogelsPeptides

Identifiers

PMID16316249
PMCPMC2651193
OpenAlexW2047561614

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.