Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0004623 (bacterial infection)
 15,226 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Employing the expression cloning technique, we cloned a novel scavenger receptor that is structurally unrelated to other scavenger receptors. The cloned receptor contained fasciclin (Fas-1), epidermal growth factor (EGF)-like, laminin-type EGF-like, and link domains. Based on the domain structures, we temporarily named it FEEL-1 (fasciclin, EGF-like, laminin-type EGF-like, and link domain-containing scavenger receptor-1). A data base search suggested the presence of a paralogous gene of FEEL-1, the full-length cDNA of this gene was also cloned, and its nucleotide sequence was determined. The deduced amino acid sequence of the clone indicated that its domain organization is similar to FEEL-1, and we named this clone FEEL-2. The effect of monoclonal antibodies against FEEL-1 indicated that FEEL-1 is the major receptor for 1,1'-dioctadecyl-3,3,3',3'-tetramethyl-indocarbo-cyanine perchlorate (DiI)-labeled acetylated low density lipoprotein (DiI-Ac-LDL) in human umbilical vein endothelial cells. Reverse transcription and PCR analysis revealed that both FEEL-1 and FEEL-2 were expressed in several tissues and expressed highly in the spleen and lymph node. On the other hand, only FEEL-1 was expressed in mononuclear cells, particularly resting CD14(+) cells. The transient expression of FEEL-1 and FEEL-2 in Chinese hamster ovary cells demonstrated that both FEELs could bind to DiI-Ac-LDL. Both receptors were also found to bind to Gram-negative and Gram-positive bacteria. These results suggest that FEELs play important roles in the defense mechanisms against bacterial infection. Finally, the phenotypic effect of the inhibition of FEEL-1 on vascular remodeling was tested in vitro using the Matrigel tube formation assay, and we found a marked reduction in the degree of cell-cell interaction in anti-FEEL-1 monoclonal antibody-treated cells, suggesting the role of this receptor in angiogenesis.
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PMID:FEEL-1, a novel scavenger receptor with in vitro bacteria-binding and angiogenesis-modulating activities. 1207 38

The scavenger receptor FEEL-1/stabilin-1 is known as the marker of alternatively activated macrophage and sinusoidal endothelial cell. FEEL-1/stabilin-1 is a multifunctional transmembrane glycoprotein that is implicated in bacterial infection, diabetes, atherosclerosis, wound healing, and innate immunity. In the current study, we have identified the phox-homology domain containing protein SNX17 as a novel interaction partner of FEEL-1/stabilin-1 in endothelial cells. SNX17 directly interacts with FEEL-1/stabilin-1 and regulates its trafficking. Studies using the cytoplasmic domain of truncated or mutant FEEL-1/stabilin-1 suggest that the NPxF motif of the FEEL-1/stabilin-1 cytoplasmic tail is required for its interaction with SNX17. By transfecting cells with small interfering RNA targeting SNX17, total cellular FEEL-1/stabilin-1 expression and FEEL-1/stabilin-1-mediated ligand uptake were significantly decreased due to the enhancement of FEEL-1/stabilin-1 protein degradation. Our results identify SNX17 as a novel interaction partner of FEEL-1/stabilin-1 in endothelial cells.
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PMID:Adaptor protein sorting nexin 17 interacts with the scavenger receptor FEEL-1/stabilin-1 and modulates its expression on the cell surface. 2022 21