Separation and Identification of HSP-Associated Protein Complexes from Pancreatic Cancer Cell Lines Using 2D CNSDS-PAGE Coupled with Mass Spectrometry

Abstract EN

Protein complexes are a cornerstone of many biological processes and together they form various types of molecular machinery.

A broad understanding of these protein complexes is crucial for revealing and building models of protein function and regulation.

Pancreatic cancer is a highly lethal disease which is difficult to diagnose at early stage and even more difficult to cure.

In this study, we applied a gradient clear native gel system combined with subsequent second-dimensional SDS-PAGE to separate protein complexes from cell lysates of SW1990 and PANC-1 pancreatic cancer cell lines with different degrees of differentiation.

Ten heat-shock-protein- (HSP-) associated protein complexes were separated and identified, and the differentially expressed proteins related to cancers were also found, such as HSP60, protein disulfide-isomerase A4 (ERp72), and transitional endoplasmic reticulum ATPase (TER ATPase).