MERRILL, A.E., A. SARUKHANOV, Pavel KREJČÍ, B. IDONI, N. CAMACHO, K.D. ESTRADA, K.M. LYONS, H. DEIXLER, H. ROBINSON, D. CHITAYAT, C.J. CURRY, R.S. LACHMAN, W.R. WILCOX and D. KRAKOW. Bent Bone Dysplasia-FGFR2 type, a Distinct Skeletal Disorder, Has Deficient Canonical FGF Signaling. The American Journal of Human Genetics. Chicago: University of Chicago Press, 2012, vol. 90, No 3, p. 550-557. ISSN 0002-9297. Available from: https://dx.doi.org/10.1016/j.ajhg.2012.02.005.
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Basic information
Original name Bent Bone Dysplasia-FGFR2 type, a Distinct Skeletal Disorder, Has Deficient Canonical FGF Signaling
Authors MERRILL, A.E. (840 United States of America), A. SARUKHANOV (840 United States of America), Pavel KREJČÍ (203 Czech Republic, guarantor, belonging to the institution), B. IDONI (840 United States of America), N. CAMACHO (840 United States of America), K.D. ESTRADA (840 United States of America), K.M. LYONS (840 United States of America), H. DEIXLER (840 United States of America), H. ROBINSON (840 United States of America), D. CHITAYAT (840 United States of America), C.J. CURRY (840 United States of America), R.S. LACHMAN (840 United States of America), W.R. WILCOX (840 United States of America) and D. KRAKOW (840 United States of America).
Edition The American Journal of Human Genetics, Chicago, University of Chicago Press, 2012, 0002-9297.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 30105 Physiology
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 11.202
RIV identification code RIV/00216224:14310/12:00059827
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1016/j.ajhg.2012.02.005
UT WoS 000301762800022
Keywords in English APERT-SYNDROME; LADD SYNDROME; GROWTH; MUTATIONS; RECEPTOR-2; ACTIVATION; INDUCTION; CROUZON; MOUSE; DISRUPTION
Tags AKR, rivok
Changed by Changed by: Ing. Andrea Mikešková, učo 137293. Changed: 9/4/2013 13:41.
Abstract
Fibroblast growth factor receptor 2 (FGFR2) is a crucial regulator of bone formation during embryonic development. Both gain and loss-of-function studies in mice have shown that FGFR2 maintains a critical balance between the proliferation and differentiation of osteoprogenitor cells. We have identified de novo FGFR2 mutations in a sporadically occurring perinatal lethal skeletal dysplasia characterized by poor mineralization of the calvarium, craniosynostosis, dysmorphic facial features, prenatal teeth, hypoplastic pubis and clavicles, osteopenia, and bent long bones. Histological analysis of the long bones revealed that the growth plate contained smaller hypertrophic chondrocytes and a thickened hypercellular periosteum. Four unrelated affected individuals were found to be heterozygous for missense mutations that introduce a polar amino acid into the hydrophobic transmembrane domain of FGFR2. Using diseased chondrocytes and a cell-based assay, we determined that these mutations selectively reduced plasma-membrane levels of FGFR2 and markedly diminished the receptor's responsiveness to extracellular FGF. All together, these clinical and molecular findings are separate from previously characterized FGFR2 disorders and represent a distinct skeletal dysplasia.
Links
MUNI/A/0975/2009, interní kód MUName: Podpora výzkumné činnosti studentů v oblasti fyziologie a imunologie živočichů. (Acronym: VYFIŽ)
Investor: Masaryk University, Category A
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