Wnt1 is an Lrp5-independent bone-anabolic Wnt ligand
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Wnt1 is an Lrp5-independent bone-anabolic Wnt ligand. / Luther, Julia; Yorgan, Timur Alexander; Rolvien, Tim; Ulsamer, Lorenz; Koehne, Till; Liao, Nannan; Keller, Daniela; Vollersen, Nele; Teufel, Stefan; Neven, Mona; Peters, Stephanie; Schweizer, Michaela; Trumpp, Andreas; Rosigkeit, Sebastian; Bockamp, Ernesto; Mundlos, Stefan; Kornak, Uwe; Oheim, Ralf; Amling, Michael; Schinke, Thorsten; David, Jean-Pierre.
in: SCI TRANSL MED, Jahrgang 10, Nr. 466, 07.11.2018, S. eaau7137.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Wnt1 is an Lrp5-independent bone-anabolic Wnt ligand
AU - Luther, Julia
AU - Yorgan, Timur Alexander
AU - Rolvien, Tim
AU - Ulsamer, Lorenz
AU - Koehne, Till
AU - Liao, Nannan
AU - Keller, Daniela
AU - Vollersen, Nele
AU - Teufel, Stefan
AU - Neven, Mona
AU - Peters, Stephanie
AU - Schweizer, Michaela
AU - Trumpp, Andreas
AU - Rosigkeit, Sebastian
AU - Bockamp, Ernesto
AU - Mundlos, Stefan
AU - Kornak, Uwe
AU - Oheim, Ralf
AU - Amling, Michael
AU - Schinke, Thorsten
AU - David, Jean-Pierre
N1 - Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.
PY - 2018/11/7
Y1 - 2018/11/7
N2 - WNT1 mutations in humans are associated with a new form of osteogenesis imperfecta and with early-onset osteoporosis, suggesting a key role of WNT1 in bone mass regulation. However, the general mode of action and the therapeutic potential of Wnt1 in clinically relevant situations such as aging remain to be established. Here, we report the high prevalence of heterozygous WNT1 mutations in patients with early-onset osteoporosis. We show that inactivation of Wnt1 in osteoblasts causes severe osteoporosis and spontaneous bone fractures in mice. In contrast, conditional Wnt1 expression in osteoblasts promoted rapid bone mass increase in developing young, adult, and aged mice by rapidly increasing osteoblast numbers and function. Contrary to current mechanistic models, loss of Lrp5, the co-receptor thought to transmit extracellular WNT signals during bone mass regulation, did not reduce the bone-anabolic effect of Wnt1, providing direct evidence that Wnt1 function does not require the LRP5 co-receptor. The identification of Wnt1 as a regulator of bone formation and remodeling provides the basis for development of Wnt1-targeting drugs for the treatment of osteoporosis.
AB - WNT1 mutations in humans are associated with a new form of osteogenesis imperfecta and with early-onset osteoporosis, suggesting a key role of WNT1 in bone mass regulation. However, the general mode of action and the therapeutic potential of Wnt1 in clinically relevant situations such as aging remain to be established. Here, we report the high prevalence of heterozygous WNT1 mutations in patients with early-onset osteoporosis. We show that inactivation of Wnt1 in osteoblasts causes severe osteoporosis and spontaneous bone fractures in mice. In contrast, conditional Wnt1 expression in osteoblasts promoted rapid bone mass increase in developing young, adult, and aged mice by rapidly increasing osteoblast numbers and function. Contrary to current mechanistic models, loss of Lrp5, the co-receptor thought to transmit extracellular WNT signals during bone mass regulation, did not reduce the bone-anabolic effect of Wnt1, providing direct evidence that Wnt1 function does not require the LRP5 co-receptor. The identification of Wnt1 as a regulator of bone formation and remodeling provides the basis for development of Wnt1-targeting drugs for the treatment of osteoporosis.
KW - Journal Article
U2 - 10.1126/scitranslmed.aau7137
DO - 10.1126/scitranslmed.aau7137
M3 - SCORING: Journal article
C2 - 30404864
VL - 10
SP - eaau7137
JO - SCI TRANSL MED
JF - SCI TRANSL MED
SN - 1946-6234
IS - 466
ER -