J 2021

Loss of Sprouty Produces a Ciliopathic Skeletal Phenotype in Mice Through Upregulation of Hedgehog Signaling

HRUBÁ, Eva, Michaela KAVKOVÁ, Linda DALECKÁ, Miloš MACHOLÁN, Tomáš ZIKMUND et. al.

Basic information

Original name

Loss of Sprouty Produces a Ciliopathic Skeletal Phenotype in Mice Through Upregulation of Hedgehog Signaling

Authors

HRUBÁ, Eva (203 Czech Republic, belonging to the institution), Michaela KAVKOVÁ, Linda DALECKÁ, Miloš MACHOLÁN, Tomáš ZIKMUND, Miroslav VAŘECHA (203 Czech Republic, belonging to the institution), Michaela BOSÁKOVÁ (203 Czech Republic, belonging to the institution), Jozef KAISER, Pavel KREJČÍ (203 Czech Republic, belonging to the institution), Mária HOVOŘÁKOVÁ and Marcela BUCHTOVÁ (203 Czech Republic, guarantor, belonging to the institution)

Edition

Journal of Bone and Mineral Research, American Society for Bone and Mineral Research, 2021, 0884-0431

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10605 Developmental biology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 6.390

RIV identification code

RIV/00216224:14310/21:00119264

Organization unit

Faculty of Science

UT WoS

000697316300001

Keywords in English

BONE QCT/mu CT; ANALYSIS/QUANTITATION OF BONE; GENETIC ANIMAL MODELS; MOLECULAR PATHWAYS - DEVELOPMENT; LIMB PATTERNING; BONE MODELING AND REMODELING; HEDGEHOG; CELL/TISSUE SIGNALING

Tags

International impact, Reviewed
Změněno: 28/2/2022 11:21, Mgr. Marie Šípková, DiS.

Abstract

V originále

The Sprouty family is a highly conserved group of intracellular modulators of receptor tyrosine kinase (RTK)-signaling pathways, which have been recently linked to primary cilia. Disruptions in the structure and function of primary cilia cause inherited disorders called ciliopathies. We aimed to evaluate Sprouty2 and Sprouty4 gene-dependent alterations of ciliary structure and to focus on the determination of its association with Hedgehog signaling defects in chondrocytes. Analysis of the transgenic mice phenotype with Sprouty2 and Sprouty4 deficiency revealed several defects, including improper endochondral bone formation and digit patterning, or craniofacial and dental abnormalities. Moreover, reduced bone thickness and trabecular bone mass, skull deformities, or chondromalike lesions were revealed. All these pathologies might be attributed to ciliopathies. Elongation of the ciliary axonemes in embryonic and postnatal growth plate chondrocytes was observed in Sprouty2(-/-) and Sprouty2(+/-)/Sprouty4(-/-) mutants compared with corre- sponding littermate controls. Also, cilia-dependent Hedgehog signaling was upregulated in Sprouty2/4 mutant animals. Ptch1 and Ihh expression were upregulated in the autopodium and the proximal tibia of Sprouty2(-/-)/Sprouty4(-/-) mutants. Increased levels of the GLI3 repressor (GLI3R) form were detected in Sprouty2/4 mutant primary fibroblast embryonic cell cultures and tissues. These findings demonstrate that mouse lines deficient in Sprouty proteins manifest phenotypic features resembling ciliopathic phenotypes in multiple aspects and may serve as valuable models to study the association between overactivation of RTK and dysfunction of primary cilia during skeletogenesis.

Links

GA21-04178S, research and development project
Name: Propojení funkce Sprouty s FGF a primárními ciliemi ve vývoji
Investor: Czech Science Foundation
LM2015062, research and development project
Name: Národní infrastruktura pro biologické a medicínské zobrazování
Investor: Ministry of Education, Youth and Sports of the CR
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR