The insulin-like growth factor-1 receptor (IGF-1R) is a transmembrane receptor with tyrosine kinase activity. The receptor plays a critical role in cancer. Using monoclonal antibodies (MAbs) against the IGF-1R, typically blocks ligand binding and enhances down-regulation of the cell-surface IGF-1R. Some MAbs such as cixutumumab are under clinical trial investigation. Targeting multiple distinct...

Both estrogen and hydrogen sulfide (H 2 S) inhibit the proliferation of vascular smooth muscle cells (SMCs) development atherosclerosis. In absence endogenous H S as occurred in CSE-knockout (KO) mouse, however, stimulates SMCs. The underlying mechanisms for this seemingly controversial effect are unclear. present study, we demonstrated that stimulatory on CSE-KO SMCs was suppressed by inhibito...

Background. Individuals with increased expression of components the IGF/INS system, are more likely to develop various malignancies. And in case when system overexpressed tumors, this adversely affects prognosis disease, including leading a decrease relapse-free survival. A characteristic feature is ability same ligands bind different receptors and vice versa (cross interactions) activate signa...

CONTEXT The TSH receptor (TSHR) is considered the main target of stimulatory autoantibodies in the pathogenesis of Graves' ophthalmopathy (GO); however, it has been suggested that stimulatory IGF-1 receptor (IGF-1R) autoantibodies also play a role. OBJECTIVE We previously demonstrated that a monoclonal stimulatory TSHR antibody, M22, activates TSHR/IGF-1R cross talk in orbital fibroblasts/pre...

Downlo type 1 insulin-like growth factor receptor (IGF-1R) is a transmembrane glycoprotein composed of two ellular α subunits and two β subunits with tyrosine kinase activity. The IGF-1R is frequently upregulated cers and signals from the cell surface to promote proliferation and cell survival. Recent attention has d on the IGF-1R as a target for cancer treatment. Here, we report that the nucle...

Insulin-like growth factor-1 receptor (IGF-1R) comprises two subunits, including a ligand binding domain on extra- cellular IGF-1Rα and a tyrosine phosphorylation site located on IGF-1Rβ. IGF-1R is over-expressed by orbital fibroblasts in the autoimmune syndrome, Graves' disease (GD). When activated by IGF-1 or GD-derived IgG (GD-IgG), these fibroblasts produce RANTES and IL-16, while those fro...

Introduction  Insulin-like growth factor I (IGF-I) which is produced in abundance in the normal adult liver, is deeply involved in hepatocyte survival, growth, and differentiation during liver development. IGF-I plays the roles via the receptor (IGF-IR) signaling pathway. IGF-IR unlike IGF-I is expressed strongly in the developing liver, but much more weakly in adults. Objective:  We hypothesi...

The actions of insulin-like growth factor 1 (IGF-1) on protein turnover and of the IGF-1 receptor (IGF-1R) were examined in skeletal muscle of rats with chronic renal failure (CRF) and sham operated (SO), pair-fed controls. Acidemia was prevented in CRF rats with NaHCO3. Serum IGF-1 and skeletal muscle IGF-1 and IGF-1 mRNA were reduced in CRF rats. Dose-response studies revealed impaired stimul...