Objective
To identify differentially expressed proteins in the pancreatic tissue of hepatic alcohol dehydrogenase deficient (ADH−) deer mice fed ethanol to understand metabolic basis and mechanism of alcoholic chronic pancreatitis (ACP).
Methods
Mice were fed liquid diet containing 3.5g% ethanol daily for three months, and differentially expressed pancreatic proteins were identified by protein separation using 2-dimensional gel electrophoresis and identification by mass spectrometry.
Results
Nineteen differentially expressed proteins were identified by applying criteria established for protein identification in proteomics. An increased abundance was found for ribosome-binding protein 1, 60S ribosomal protein L31 like isoform 1, histone 4, calcium and ATP binding proteins and the proteins involved in anti-apoptotic processes, and endoplasmic reticulum (ER) function, stress and/or homeostasis. Low abundance was found for endoA’ cytokeratin, 40S ribosomal protein SA, amylase 2b isoform precursor, serum albumin and ATP synthase subunit β, and the proteins involved in cell motility, structure and conformation.
Conclusions
Chronic ethanol feeding in ADH− deer mice differentially expresses pancreatic functional and structural proteins, which can be used to develop biomarker(s) of ACP, particularly amylase 2b precursor, and 60 KDa heat shock protein and those involved in ATP synthesis, and blood osmotic pressure.