2022
Intervertebral disc degeneration is rescued by TGFβ/BMP signaling modulation in an ex vivo filamin B mouse model
ZIEBA, J., K. N. FORLENZA, K. HEARD, J. H. MARTIN, Michaela BOSÁKOVÁ et. al.Základní údaje
Originální název
Intervertebral disc degeneration is rescued by TGFβ/BMP signaling modulation in an ex vivo filamin B mouse model
Autoři
ZIEBA, J., K. N. FORLENZA, K. HEARD, J. H. MARTIN, Michaela BOSÁKOVÁ (203 Česká republika, domácí), D. H. COHN, S. P. ROBERTSON, Pavel KREJČÍ (203 Česká republika, domácí) a D. KRAKOW (garant)
Vydání
Bone research, London, SPRINGERNATURE, 2022, 2095-4700
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30402 Technologies involving the manipulation of cells, tissues, organs or the whole organism
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 12.700
Kód RIV
RIV/00216224:14110/22:00125755
Organizační jednotka
Lékařská fakulta
UT WoS
000787774700001
Klíčová slova anglicky
Spondylocarpotarsal syndrome; TGF beta/BMP signaling modulation; mouse model
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 16. 1. 2023 12:41, Mgr. Tereza Miškechová
Anotace
V originále
Spondylocarpotarsal syndrome (SCT) is a rare musculoskeletal disorder characterized by short stature and vertebral, carpal, and tarsal fusions resulting from biallelic nonsense mutations in the gene encoding filamin B (FLNB). Utilizing a FLNB knockout mouse, we showed that the vertebral fusions in SCT evolved from intervertebral disc (IVD) degeneration and ossification of the annulus fibrosus (AF), eventually leading to full trabecular bone formation. This resulted from alterations in the TGFβ/BMP signaling pathway that included increased canonical TGFβ and noncanonical BMP signaling. In this study, the role of FLNB in the TGFβ/BMP pathway was elucidated using in vitro, in vivo, and ex vivo treatment methodologies. The data demonstrated that FLNB interacts with inhibitory Smads 6 and 7 (i-Smads) to regulate TGFβ/BMP signaling and that loss of FLNB produces increased TGFβ receptor activity and decreased Smad 1 ubiquitination. Through the use of small molecule inhibitors in an ex vivo spine model, TGFβ/BMP signaling was modulated to design a targeted treatment for SCT and disc degeneration. Inhibition of canonical and noncanonical TGFβ/BMP pathway activity restored Flnb−/− IVD morphology. These most effective improvements resulted from specific inhibition of TGFβ and p38 signaling activation. FLNB acts as a bridge for TGFβ/BMP signaling crosstalk through i-Smads and is key for the critical balance in TGFβ/BMP signaling that maintains the IVD. These findings further our understanding of IVD biology and reveal new molecular targets for disc degeneration as well as congenital vertebral fusion disorders.