BACKGROUND
USP18 (ubiquitin-specific protease 18) removes ubiquitin-like modifier interferon stimulated gene 15 (ISG15) from conjugated proteins. USP18 null mice in a FVB/N background develop tumors as early as 2 months of age. These tumors are leiomyosarcomas and thus represent a new murine model
Hepatocyte growth factor activator inhibitors (HAI-1 and HAI-2) are Kunitz-type serine protease inhibitors that have a broad inhibitory spectrum against serine proteases. This study examined the role of HAI-1 and HAI-2 in uterine leiomyosarcoma (LMS) patients, and in vitro. HAI-1 and HAI-2 was
Calpain 6 (Capn6) is one of the calcium-dependent intracellular nonlysosomal proteases. Recently, Capn6 was found to be overexpressed in leiomyosarcomas (LMSs) compared with normal myometrium. This investigation was performed to determine the expression of Capn6 in uterine sarcomas and
Adult sarcomas are highly aggressive tumors that are characterized by high levels of matrix metalloproteinase (MMP)-2 and -9 secretions that degrade the ECM and basement membrane, allowing cancer cells to spread to distal organs. Proteases play a key role in tumor cell invasion and metastasis by
Integrins are a family of receptors for extracellular matrix proteins that have critical roles in human tissue development. Previous studies identified down-regulation and/or mutations of integrin alpha7 (ITGA7) in prostate cancer, liver cancer, soft tissue leiomyosarcoma, and glioblastoma
Uterine leiomyomas are the most common benign smooth muscle tumors in the myometrium. The expression of redox factor 1 (Ref-1), a DNA repair enzyme and redox-modifying factor, was studied in the myometrium and uterine smooth muscle tumors to investigate the relevance of Ref-1 in the growth
Hepatocyte growth factor/scatter factor (HGF/SF) is a pleiotropic effector of cells expressing the Met tyrosine kinase receptor. Although HGF/SF is synthesized by mesenchymal cells and acts predominantly on epithelial cells, we have recently demonstrated that human sarcoma cell lines often
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