Methodology to Quantify Collagen Subtypes and Crosslinks: Application in Minipig Cartilages.
cartilage
collagen
collagen crosslinks
collagen subtype
fibrocartilage
mass spectrometry
Journal
Cartilage
ISSN: 1947-6043
Titre abrégé: Cartilage
Pays: United States
ID NLM: 101518378
Informations de publication
Date de publication:
12 2021
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-1754SSubventions
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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