Evidence map›Paper›PMID 33096204›Full record

ArticleMatrix biology : journal of the International Society for Matrix Biology2021

Collagen XII mediated cellular and extracellular mechanisms regulate establishment of tendon structure and function.

Yayoi Izu, Sheila M Adams, Brianne K Connizzo, David P Beason, Louis J Soslowsky, Manuel Koch, David E Birk

Open access · hybridAbstract read
In one paragraph

Article in Matrix biology : journal of the International Society for Matrix Biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
8.9field-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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Myopathic Ehlers-Danlos Syndrome (mEDS) Related toInternational journal of molecular sciences · 2025
    Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Tendon mechanobiology in the context of tendon biofabrication.Frontiers in bioengineering and biotechnology · 2025
    Review
  20. Review
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 4 institutions in 3 countries.

Yayoi IzuCollege of Medicine, University of South Florida, Morsani, Tampa, FL, United States; Okayama University of Science, Ehime, Japan. Electronic address: y-izu@vet.ous.ac.jp.
Sheila M AdamsCollege of Medicine, University of South Florida, Morsani, Tampa, FL, United States.
Brianne K ConnizzoMcKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, PA, United States.
David P BeasonMcKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, PA, United States.
Louis J SoslowskyMcKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, PA, United States.
Manuel KochInstitute for Oral and Musculoskeletal Biology, Center for Biochemistry, Department of Dermatology, Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany.
David E BirkCollege of Medicine, University of South Florida, Morsani, Tampa, FL, United States.
University of Pennsylvania · USUniversity of South Florida · USOkayama University of Science · JPUniversity of Cologne · DE

Funding

The Role of Hyaluronic Acid Receptors in Tendon HealingP30AR050950 · NIAMS · UNIVERSITY OF PENNSYLVANIA · PI SOSLOWSKY, LOUIS J · 2006 to 2015
$6.2M
Regulated Assembly of the Tendon Extracellular MatrixR01AR044745 · NIAMS · UNIVERSITY OF SOUTH FLORIDA · PI BIRK, DAVID E · 1997 to 2016
$5.0M
NIAMS NIH HHS P30 AR050950NIAMS NIH HHS R01 AR044745
6 · The paper itself

Abstract

Tendons have a uniaxially aligned structure with a hierarchical organization of collagen fibrils crucial for tendon function. Collagen XII is expressed in tendons and has been implicated in the regulation of fibrillogenesis. It is a non-fibrillar collagen belonging to the Fibril-Associated Collagens with Interrupted Triple Helices (FACIT) family. Mutations in COL12A1 cause myopathic Ehlers Danlos Syndrome with a clinical phenotype involving both joints and tendons supporting critical role(s) for collagen XII in tendon development and function. Here we demonstrate the molecular function of collagen XII during tendon development using a Col12a1 null mouse model. Col12a1 deficiency altered tenocyte shape, formation of interacting cell processes, and organization resulting in impaired cell-cell communication and disruption of hierarchal structure as well as decreased tissue stiffness. Immuno-localization revealed that collagen XII accumulated on the tenocyte surface and connected adjacent tenocytes by building matrix bridges between the cells, suggesting that collagen XII regulates intercellular communication. In addition, there was a decrease in fibrillar collagen I in collagen XII deficient tenocyte cultures compared with controls suggesting collagen XII signaling specifically alters tenocyte biosynthesis. This suggests that collagen XII provides feedback to tenocytes regulating extracellular collagen I. Together, the data indicate dual roles for collagen XII in determination of tendon structure and function. Through association with fibrils it functions in fibril packing, fiber assembly and stability. In addition, collagen XII influences tenocyte organization required for assembly of higher order structure; intercellular communication necessary to coordinate long range order and feedback on tenocytes influencing collagen synthesis. Integration of both regulatory roles is required for the acquisition of hierarchal structure and mechanical properties.

Indexed as

AnimalsCell CommunicationCollagenCollagen Type XIIDisease Models, AnimalEhlers-Danlos SyndromeFibrillar CollagensHumansMiceTendonsTenocytesCOL12A1 protein, humanCollagenCollagen Type XIIFibrillar CollagensCell–cell communicationCollagen fibril assemblyCollagen XIIMechanical propertiesTendonTendon extracellular matrix assembly

Identifiers

PMID33096204
PMCPMC7870578
OpenAlexW3093804074

What OpenQuestion holds

Textmetadata
LicenceTDM
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.