Human Cadherin 17/CDH17 HEK293 Overexpression Lysate

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Human Cadherin 17/CDH17 HEK293 Overexpression Lysate: Product Information

Product Description
This Human Cadherin 17/CDH17 overexpression lysate was created in HEK293 Cells and intented for use as a Western blot (WB) positive control. Purification of Cadherin 17/CDH17 protein (Cat: 11360-H08H) from the overexpression lysate was verified.
Expression Host
HEK293 Cells
Species
Human
Sequence Information
A DNA sequence encoding the human CDH17 (Q12864-1) extracellular domain (Met 1-Met 787) was expressed, fused with a polyhistidine tag at the C-terminus.
Molecule Mass
The recombinant human CDH17 consists of 776 amino acids and predictes a molecular mass of 87 kDa. In SDS-PAGE under reducing conditions, the apparent molecular mass of rh CDH17 is approximately 105-115 kDa due to glycosylation.

Human Cadherin 17/CDH17 HEK293 Overexpression Lysate: Usage Guide

Preparation Method
Cell lysate was prepared by homogenization of the over-expressed cells in ice-cold modified RIPA Lysis Buffer with cocktail of protease inhibitors (Sigma). Cell debris was removed by centrifugation. Protein concentration was determined by Bradford assay (Bio-Rad protein assay, Microplate Standard assay). The cell lysate was boiled for 5 min in 1 x SDS loading buffer (50 mM Tris-HCl pH 6.8, 12.5% glycerol, 1% sodium dodecylsulfate, 0.01% bromophenol blue) containing 5% b-mercaptoethanol, and lyophilized.
Lysis Buffer
Modified RIPA Lysis Buffer: 50 mM Tris-HCl pH 7.4, 150 mM NaCl, 1mM EDTA, 1% Triton X-100, 0.1% SDS, 1% Sodium deoxycholate, 1mM PMSF.
Recommend Usage
1.  Centrifuge the tube for a few seconds and ensure the pellet at the bottom of the tube. 2.  Re-dissolve the pellet using 200μL pure water and boil for 2-5 min.
Sample Buffer
1 X Sample Buffer (1 X modified RIPA buffer+1 X SDS loading buffer).
Stability & Storage
Store at 4℃ for up to twelve months from date of receipt. After re-dissolution, aliquot and store at -80℃ for up to twelve months. Avoid repeated freeze-thaw cycles.
Application
Western Blot (WB)
Optimal dilutions/concentrations should be determined by the end user.

Human Cadherin 17/CDH17 HEK293 Overexpression Lysate: Alternative Names

Human CDH16 Overexpression Lysate; Human HPT-1 Overexpression Lysate; Human HPT1 Overexpression Lysate

Cadherin 17/CDH17 Background Information

Cadherin-17 or LI-cadherin is a member of the cadherin superfamily, genes encoding calcium-dependent, membrane-associated glycoproteins. Cadherin-17/LI-cadherin is a cadherin-like protein consisting of an extracellular region, 7 cadherin domains, and a transmembrane region but lacking the conserved cytoplasmic domain. The protein is a component of the gastrointestinal tract and pancreatic ducts, acting as an intestinal proton-dependent peptide transporter in the first step in oral absorption of many medically important peptide-based drugs. The protein may also play a role in the morphological organization of liver and intestine. Alternative splicing of the encoding gene results in multiple transcript variants. Cadherin-17/LI-cadherin preferentially interact with themselves in a homophilic manner in connecting cells. Cadherin-17 may thus contribute to the sorting of heterogeneous cell types and have a role in the morphological organization of liver and intestine. It's also involved in intestinal peptide transport. Experiments have reported the association between Cadherin-17/LI-cadherin and gastric cancer. Cadherin-17/LI-cadherin expression was detected in 63/94 of gastric adenocarcinomas in addition to intestinal metaplasia. The expression of Cadherin-17 tended to be associated with intestinal type carcinoma, and carcinomas with Cadherin-17 expression was significantly more frequent in advanced stage cases than in early stage. Cadherin-17 is also a useful immunohistochemical marker for diagnosis of adenocarcinomas of the digestive system.
Full Name
cadherin 17, LI cadherin (liver-intestine)
References
  • Liu LX, et al. (2009) Targeting cadherin-17 inactivates Wnt signaling and inhibits tumor growth in liver carcinoma. Hepatology. 50(5): 1453-63.
  • Ito R, et al. (2005) Clinicopathological significant and prognostic influence of cadherin-17 expression in gastric cancer. Virchows Arch. 447(4): 717-22.
  • Horsfield J, et al. (2002) Cadherin-17 is required to maintain pronephric duct integrity during zebrafish development. Mech Dev. 115(1-2): 15-26.
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