Overexpression of eCLCA1 in small airways of horses with recurrent airway obstruction.

The human and murine hCLCA1 mCLCA3 (channel chloride, calcium-activated) have recently been identified as a promising therapeutic target in asthma. recurrent airway obstruction in horses is an important animal model of human asthma. Here, we have cloned and characterized General Clia Kits the first horse family CLCA members, eCLCA1. 

The 913 amino acid polypeptide eCLCA1 form of 120-kDa transmembrane glycoprotein that is processed to a 80-kDa protein in vivo. Three single nucleotide polymorphisms were detected in the coding region eCLCA1 in 14 horses, resulting in two amino acid changes (485H / R and 490V / L). However, there is no functional difference noted between the properties of the channel are two variants in transfected HEK293 cells. 

Protein was detected by immunohistochemistry eCLCA1 in mucin-producing cells in the respiratory tract and intestines, sweat glands of the skin, and mucous glands of the kidney. strong excess of eCLCA1 airways was observed in horses with recurrent airway obstruction using the Northern blot hybridization, Western blotting, immunohistochemistry and real-time quantitative RT-PCR. The results showed that spontaneous recurrent airway obstruction or experimentally in horses can serve as a model to study the role of CLCA homologs in chronic respiratory diseases with excess production of mucins.

In this study we have used lectin histochemistry and scanning electron microscope (SEM) to assess the growth and differentiation characteristics of human respiratory epithelial cells (REC) was cultured on two biomaterial scaffold. Scaffolding first, based on hyaluronic acid derivatives, was observed to be non-adhesive to REC. 

Lack of adhesion found to be unrelated to the presence of hyaluronic acid binding domain on the insulated surface REC. Other scaffolding, which consists of collagen horses. observed to encourage REC spread and adhesion. Positive Ulex europaeus agglutinin (UEA) lectin Human Clia Kits staining of these preparations showed ciliated REC on the surface of the scaffold. However, the marked decline in peanut agglutinin (PNA) positive staining, relative to the control culture and the original network, indicates dedifferentiation of cells secretory of monolayer REC.