BACKGROUND Osteosarcomas are malignant bone tumors consisting of cells with abnormal cellular functions. Although osteosarcoma-derived cells are commonly used for osteoblastic models, the molecular composition of the osteosarcoma extracellular matrix (ECM) is not well characterized. MATERIALS AND METHODS We compared three osteosarcoma cell lines (MG-63, Saos-2 and U-2 OS) with normal human os...

Long noncoding RNAs have been documented as having widespread roles in carcinogenesis and cancer progression. However, roles of long noncoding RNAs in osteosarcoma remain unclear. This study is to investigate the clinical relevance and biological functions of long noncoding RNA 91H in osteosarcoma. Herein, we confirmed that 91H expression was notably increased in osteosarcoma patients and cell ...

low grade central osteosarcoma (lgco) is a rare subtype of osteosarcoma that is less aggressive than conventional osteosarcoma. the importance of lgco lies in the fact that regarding microscopic and radiographic features, it occasionally simulates some benign jaw lesions and would consequently be misdiagnosed in many patients. the present study was conducted to collect the information and descr...

osteosarcoma is relatively rare in the jaws and variable in presentation, thus its recognition may be quite confusing and delay diagnosis and treatment. also, in contrast to most malignancies, osteosarcoma is usually encountered earlier in life and may clinically resemble features of more common oral entities such as chronic osteomyelitis, fibrous dysplasia, osteoblastic metastatic carcinoma, o...

Osteosarcoma is the most frequent primary bone tumor. Advances in combination chemotherapy and surgical technique have greatly improved the survival of patients with osteosarcoma. In Korea, improvements in osteosarcoma treatment have been made over the past two decades. The 5-year event-free survival rate of Korean children and adolescents with localized disease is 64.6%, comparable to that of ...

High mobility group N (HMGNs) are members of the high mobility group protein family, and are involved in the development and progression of several tumors. HMGN1 and HMGN5 were previously shown to be associated with the bioactivities of osteosarcoma. However, the effects and molecular mechanisms of HMGN2 on osteosarcoma progression remain to be determined. In order to characterize the endogenou...

Osteosarcoma is the most frequent malignant disease of the bone. On the basis of early clinical experience in the 1960s with H-1 protoparvovirus (H-1PV) in osteosarcoma patients, this effective oncolytic virus was selected for systematic preclinical testing on various osteosarcoma cell cultures. A panel of five human osteosarcoma cell lines (CAL 72, H-OS, MG-63, SaOS-2, U-2OS) was tested. Virus...

Abstract. – OBJECTIVE: Accumulating evidence revealed that long non-coding RNAs (lncRNAs) were emerging regulators in cancer biology, and could be used as potential biomarkers for cancer prognosis. In this study, we focused on MALAT1 and investigated its expression pattern, clinical significance in osteosarcoma. PATIENTS AND METHODS: The expression of lncRNA MALAT1 was analyzed in 162 osteosarc...

Osteosarcoma is the most common bone tumors in children and adolescents. Despite intensive chemotherapy, patients with advanced disease still have a poor prognosis, illustrating the need for alternative therapies. In this study, we explored the use of antibodies that block CD47 with a tumor growth suppressive effect on osteosarcoma. We first found that up-regulation of CD47 mRNA levels in the t...

To discover tumor-associated proteins in osteosarcoma, a quantitative proteomic analysis was performed to identify proteins that were differentially expressed between osteosarcoma and human osteoblastic cells. Through clinical screening and a functional evaluation, chromosome segregation 1-like (CSE1L) protein was found to be related to the growth of osteosarcoma cells. To date, little is known...