Evidence map›Paper›PMID 23253177›Full record

ArticleBioconjugate chemistry2013

Direct detection of collagenous proteins by fluorescently labeled collagen mimetic peptides.

Yang Li, Daniel Ho, Huan Meng, Tania R Chan, Bo An, Hanry Yu, Barbara Brodsky, Albert S Jun, S Michael Yu

Open access · greenAbstract read
In one paragraph

Article in Bioconjugate chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
2.3field-weighted citation impact, top 13% 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

61 citing papers in PubMed, 103 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Article
  6. Around the collagen triple helix: an introduction to studying associated genetic and acquired diseases.Matrix biology : journal of the International Society for Matrix Biology · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Collagen Hybridizing Peptide-Based Radiotracers for Molecular Imaging of Collagen Turnover in Pulmonary Fibrosis.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Targeting damaged collagen for intra-articular delivery of therapeutics using collagen hybridizing peptides.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2023
    Article
  15. Review
  16. The Chemistry and Biology of Collagen Hybridization.Journal of the American Chemical Society · 2023
    Review
  17. Collagen Molecular Damage is a Hallmark of Early Atherosclerosis Development.Journal of cardiovascular translational research · 2023
    Article
  18. Article
  19. Article
  20. Article

1 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

9 authors at 3 institutions in 2 countries.

Yang LiDepartment of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA.
Daniel Ho
Huan Meng
Tania R Chan
Bo An
Hanry Yu
Barbara Brodsky
Albert S Jun
S Michael Yu
Johns Hopkins University · USTufts University · USSingapore-MIT Alliance for Research and Technology · SG

Funding

Wilmer Core Grant for Vision ResearchP30EY001765 · NEI · JOHNS HOPKINS UNIVERSITY · PI Ji Yi · 1985 to 2026
$22.1M
Role of unfolded protein response and COL8A2 in Fuchs corneal dystrophyR01EY019874 · NEI · JOHNS HOPKINS UNIVERSITY · PI JUN, ALBERT S · 2010 to 2014
$2.0M
Study and Application of Collagen Mimetic Peptide-Collagen HybridizationR01AR060484 · NIAMS · UNIVERSITY OF UTAH · PI YU, MICHAEL S · 2011 to 2015
$1.7M
Biomaterial Applications of Recombinant Bacterial CollagensR01EB011620 · NIBIB · TUFTS UNIVERSITY MEDFORD · PI BRODSKY, BARBARA M, KAPLAN, DAVID L. · 2010 to 2013
$1.3M
Role of Alpha 2 Collagen VIII in Fuchs Corneal DystrophyK08EY015523 · NEI · JOHNS HOPKINS UNIVERSITY · PI JUN, ALBERT S · 2004 to 2008
$1.1M
Non-Covalent Modification of Collagen ScaffoldsR21GM074812 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI YU, MICHAEL S · 2005 to 2006
$371k
NEI NIH HHS K08 EY015523NEI NIH HHS K08-EY15523NEI NIH HHS P30 EY001765NEI NIH HHS P30-EY001765NEI NIH HHS R01 EY019874NEI NIH HHS R01-EY019874NIAMS NIH HHS R01 AR060484NIAMS NIH HHS R01-AR060484NIBIB NIH HHS EB011620NIBIB NIH HHS R01 EB011620NIGMS NIH HHS R21 GM074812
6 · The paper itself

Abstract

Although fibrous collagens are major structural components of extracellular matrix in mammals, collagen overproduction is associated with many human diseases including cancers and fibrosis. Collagen is typically identified in biomedical research by Western blot and immunohistochemistry; however, anticollagen antibodies employed in these analyses are difficult to prepare and their affinities to collagen can diminish if collagen becomes denatured during analyses. Previously, we discovered that single-stranded collagen mimetic peptides [CMPs, sequence: (GlyProHyp)(9)] can bind to denatured collagen chains by triple helix hybridization. Here, we present collagen-specific staining methods using simple CMPs conjugated to common fluorophores (e.g., carboxyfluorescein), which allow direct detection of collagens and collagen-like proteins in SDS-PAGE and in various mammalian tissue sections. By directly staining SDS-PAGE gels with fluorescently labeled CMPs, both intact (type I, II, and IV) and MMP-1 cleaved collagen (type I) chains as well as complement factor C1q were detected. Collagen bands containing as little as 5 ng were optically visualized, while no staining was observed for fibronectin, laminin, and a collection of proteins from mammalian cell lysate. The CMP was unable to stain collagen-like bacterial protein, which contains numerous charged amino acids that are believed to stabilize triple helix in place of Hyp. We also show that fluorescently labeled CMPs can specifically visualize collagens in fixed tissue sections (e.g., skin, cornea, and bone) more effectively than anticollagen I antibody, and allow facile identification of pathologic conditions in fibrotic liver tissues.

Indexed as

Amino Acid SequenceAnimalsBiomimetic MaterialsCollagenCorneaElectrophoresis, Polyacrylamide GelFluoresceinsFluorescent DyesImmunohistochemistryLiverMicePeptidesRatsSkinStaining and Labeling6-carboxyfluoresceinCollagenFluoresceinsFluorescent DyesPeptides

Identifiers

PMID23253177
PMCPMC3586774
OpenAlexW2045346874

What OpenQuestion holds

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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.