{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T18:24:48Z","timestamp":1761675888504},"reference-count":48,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2011,10,4]],"date-time":"2011-10-04T00:00:00Z","timestamp":1317686400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2012,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Osteosarcoma is the most frequent primary malignant bone tumor in children and adolescents with a high propensity for lung metastasis, the major cause of disease-related death. Reliable outcome-predictive markers and targets for osteosarcoma metastasis-suppressing drugs are urgently needed for more effective treatment of metastasizing osteosarcoma, which has a current mean 5-year survival rate of approximately 20%. This study investigated the prognostic value and the biological relevance of the extracellular matrix-associated growth factor Cyr61 of the CCN family of secreted proteins in osteosarcoma and metastasis. The prognostic value of Cyr61 was assessed with Kaplan-Meier analyses based on Cyr61 immunostaining of a tissue microarray of osteosarcoma biopsies collected from 60 patients with local or metastatic disease. Effects of Cyr61 overexpression on intratibial tumor growth and lung metastasis of the low metastatic human SaOS-2 osteosarcoma cell line were examined in severe combined immunodeficiency (SCID) mice. Cyr61-provoked signaling was studied in vitro in nonmanipulated SaOS-2 cells. Cyr61 immunostaining of osteosarcoma tissue cores correlated significantly (p\u2009=\u20090.02) with poor patient survival. Mice intratibially injected with Cyr61-overexpressing SaOS-2 cells showed faster tumor growth and an increase in number and outgrowth of lung metastases and consequently significantly (p\u2009=\u20090.0018) shorter survival than mice injected with control SaOS-2 cells. Cyr61-evoked PI-3K\/Akt\/GSK3\u03b2 signaling in SaOS-2 cells resulted in a subcellular redistribution of the cell cycle inhibitor p21Cip1\/WAF1. Cyr61 has considerable potential as a novel marker for poor prognosis in osteosarcoma and is an attractive target for primary tumor- and metastases-suppressing drugs. \u00a9 2012 American Society for Bone and Mineral Research<\/jats:p>","DOI":"10.1002\/jbmr.535","type":"journal-article","created":{"date-parts":[[2011,10,4]],"date-time":"2011-10-04T15:48:32Z","timestamp":1317743312000},"page":"58-67","source":"Crossref","is-referenced-by-count":55,"title":["Cyr61 expression in osteosarcoma indicates poor prognosis and promotes intratibial growth and lung metastasis in mice"],"prefix":"10.1093","volume":"27","author":[{"given":"Adam A","family":"Sabile","sequence":"first","affiliation":[{"name":"Laboratory for Orthopedic Research, Department of Orthopedics, Balgrist University Hospital, Zurich, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matthias JE","family":"Arlt","sequence":"additional","affiliation":[{"name":"Laboratory for Orthopedic Research, 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