2025
Sprouty2/4 deficiency disrupts early signaling centers impacting chondrogenesis in the mouse forelimb
DALECKA, Linda; Eva HRUBÁ; Marketa ANDRASOVA; Klara STEKLIKOVA; Zuzana PAVLIKOVA et al.Základní údaje
Originální název
Sprouty2/4 deficiency disrupts early signaling centers impacting chondrogenesis in the mouse forelimb
Autoři
DALECKA, Linda; Eva HRUBÁ; Marketa ANDRASOVA; Klara STEKLIKOVA; Zuzana PAVLIKOVA; Klára KUČEROVÁ; Tereza SZOTKOWSKA; Martin BARTOS; Marcela BUCHTOVÁ; Abigail Saffron TUCKER a Maria HOVORAKOVA
Vydání
JBMR Plus, Wiley, 2025, 2473-4039
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10605 Developmental biology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.400 v roce 2024
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/25:00140630
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
FGF signaling; RTKs; micro-CT; autopodium pathologies; apical ectodermal ridge; zone of polarizing activity; Shh; ciliopathy; limb patterning; genetic animal models
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 14. 3. 2025 15:07, Mgr. Marie Novosadová Šípková, DiS.
Anotace
V originále
The FGF signaling pathway plays an important role in the regulation of limb development, controlling cell migration, proliferation, differentiation, and apoptosis. Sprouty proteins act as antagonists of the FGF pathway and control the extent of FGF signaling as part of a negative feedback loop. Sprouty2/4 deficient mice evince defects in endochondral bone formation and digit patterning in their forelimbs, with pathogenesis recently related to ciliopathies. To understand the mechanisms behind these pathologies, the limb defects in Sprouty2+/-;Sprouty4-/- male and female mice were characterized and correlated to the dynamic expression patterns of Sprouty2 and Sprouty4, and the impact on the main signaling centers of the limb bud was assessed. Sprouty2 and Sprouty4 exhibited dynamic expressions during limb development. Interestingly, despite similar expression patterns in all limbs, the hindlimbs did not evince any obvious alterations in development, while the forelimbs showed consistent phenotypes of variable severity. Prenatally as well as postnatally, the left forelimb was significantly more severely affected than the right one. A broad variety of pathologies was present in the autopodium of the forelimb, including changes in digit number, size, shape, and number of bones, hand clefts, and digit fusions. Ectopic ossification of bones and abnormal bone fusions detected in micro-CT scans were frequently observed in the digital as well as in the carpal and metacarpal areas. Sprouty2+/-;Sprouty4-/- limb buds showed patchy loss of Fgf8 expression in the apical ectodermal ridge, and a loss of tissue underlying these regions. The zone of polarizing activity was also impacted, with lineage analysis highlighting a change in the contribution of Sonic hedgehog expressing cells. These findings support the link between Sproutys and Hedgehog signaling during limb development and highlight the importance of Sprouty2 and Sprouty4 in controlling early signaling centers in the limb.
Návaznosti
| GA21-04178S, projekt VaV |
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