2025
FSP1/S100A4-Expressing Stem/Progenitor Cells Are Essential for Temporomandibular Joint Growth and Homeostasis.
TUWATNAWANIT, Ticha; Wilma WESSMAN; Denisa BELISOVÁ; Zuzana SUMBALOVÁ KOLEDOVÁ; Abigail Saffron TUCKER et al.Základní údaje
Originální název
FSP1/S100A4-Expressing Stem/Progenitor Cells Are Essential for Temporomandibular Joint Growth and Homeostasis.
Autoři
TUWATNAWANIT, Ticha; Wilma WESSMAN; Denisa BELISOVÁ; Zuzana SUMBALOVÁ KOLEDOVÁ; Abigail Saffron TUCKER a Neal ANTHWAL
Vydání
JOURNAL OF DENTAL RESEARCH, THOUSAND OAK, SAGE PUBLICATIONS INC, 2025, 0022-0345
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10601 Cell biology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.900 v roce 2024
Označené pro přenos do RIV
Ano
Organizační jednotka
Lékařská fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
FSP1/S100A4; stem/progenitor cells; temporomandibular joint; tissue growth; joint homeostasis
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 10. 3. 2026 10:52, Mgr. Tereza Miškechová
Anotace
V originále
The temporomandibular joint (TMJ) is one of the most used joints in the body. Defects and wear in the cartilage of the joint, condyle, and fibrocartilage disc lie at the heart of many common TMJ disorders. During postnatal development, the condyle acts as a growth center for the mandible, with cells moving as a conveyor belt away from the top of the condyle as they differentiate. The superficial layers of the condyle have been proposed to contain stem/progenitor populations to allow growth and maintain homeostasis. Here we have focused on the role of fibroblast-specific protein 1 (FSP1; also known as S100a4) as a key fibroblast stem/progenitor marker for the condyle. Lineage tracing with FSP1-Cre;R26RmTmG mice revealed that FSP1-expressing cells were restricted to the superficial fibroblast zone, giving rise to all layers of the condyle over time. The FSP1-expressing cells overlapped with other putative stem cell markers of the condyle, such as Gli1 and scleraxis. BrdU pulse chase experiments highlighted that a subset of FSP1 fibrocartilage was label retaining, suggesting that FSP1 labels a novel stem/progenitor cell population in the condyle. Destruction of FSP1-expressing cells by conditional diphtheria toxin activity in FSP1-Cre;R26RDTA mice resulted in severe TMJ osteoarthritis with loss of the cartilage structure. Lgr5-expressing cells in the superficial layer of the condyle have been shown to create a Wnt inhibitory niche. FSP1 expression postnatally was associated with a reduction in canonical Wnt activity in the condyle. Importantly, constitutive activation of Wnt/β catenin in FSP1-expressing cells led to a downregulation of FSP1 and progressive postnatal loss of TMJ condylar hyaline cartilage due to loss of the superficial stem/progenitor cells. These data demonstrate a novel role for FSP1-expressing cells in the superficial zone in growth and maintenance of the TMJ condylar cartilage and highlight the importance of regulating Wnt activity in this population.