Methodology to Quantify Collagen Subtypes and Crosslinks: Application in Minipig Cartilages.


Journal

Cartilage
ISSN: 1947-6043
Titre abrégé: Cartilage
Pays: United States
ID NLM: 101518378

Informations de publication

Date de publication:
12 2021
Historique:
pubmed: 27 11 2021
medline: 7 4 2022
entrez: 26 11 2021
Statut: ppublish

Résumé

This study develops assays to quantify collagen subtypes and crosslinks with liquid chromatography-mass spectrometry (LC-MS) and characterizes the cartilages in the Yucatan minipig. For collagen subtyping, liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis was performed on tissues digested in trypsin. For collagen crosslinks, LC-MS analysis was performed on hydrolysates. Samples were also examined histologically and with bottom-up proteomics. Ten cartilages (femoral condyle, femoral head, facet joint, floating rib, true rib, auricular cartilage, annulus fibrosus, 2 meniscus locations, and temporomandibular joint disc) were analyzed. The collagen subtyping assay quantified collagen types I and II. The collagen crosslinks assay quantified mature and immature crosslinks. Collagen subtyping revealed that collagen type I predominates in fibrocartilages and collagen type II in hyaline cartilages, as expected. Elastic cartilage and fibrocartilages had more mature collagen crosslink profiles than hyaline cartilages. Bottom-up proteomics revealed a spectrum of ratios between collagen types I and II, and quantified 42 proteins, including 24 collagen alpha-chains and 12 minor collagen types. The novel assays developed in this work are sensitive, inexpensive, and use a low operator time relative to other collagen analysis methods. Unlike the current collagen assays, these assays quantify collagen subtypes and crosslinks without an antibody-based approach or lengthy chromatography. They apply to any collagenous tissue, with broad applications in tissue characterization and tissue engineering. For example, a novel finding of this work was the presence of a large quantity of collagen type III in the white-white knee meniscus and a spectrum of hyaline and fibrous cartilages.

Identifiants

pubmed: 34823380
doi: 10.1177/19476035211060508
pmc: PMC8804780
doi:

Substances chimiques

Collagen 9007-34-5

Types de publication

Journal Article Research Support, N.I.H., Extramural

Langues

eng

Sous-ensembles de citation

IM

Pagination

1742S-1754S

Subventions

Organisme : NIAMS NIH HHS
ID : R01 AR067821
Pays : United States
Organisme : NIAMS NIH HHS
ID : R01 AR071457
Pays : United States
Organisme : NIDCR NIH HHS
ID : R01 DE015038
Pays : United States

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Auteurs

Benjamin J Bielajew (BJ)

Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA.

Jerry C Hu (JC)

Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA.

Kyriacos A Athanasiou (KA)

Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA.

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Classifications MeSH