N-glycosylation of somatostatin receptor type 2 protects rats from acute pancreatitis.

ABSTRACT:

Background

The growth hormone inhibitor somatostatin and its analogs are promising therapeutic agents for acute pancreatitis. However, the therapeutic effects remain controversial. Somatostatin analogs preferentially bind to somatostatin receptor 2 (SSTR2), and this study aimed to investigate whether N-glycosylation affects SSTR2 stability, membrane trafficking, and signal transduction.

Methods

Western blot analysis following PNGase F digestion was performed to confirm N-glycosylation of SSTR2 in rat pancreatic acinar AR42J cells. Rats were subjected to 4 hourly intraperitoneal injections of cerulein (50 µg/kg) plus LPS (5 µg/mL) to induce acute pancreatitis. Mass spectrometry was conducted to identify the glycosylation sites of SSTR2, and immunofluorescent staining was carr

SUBMITTER: Huang M 

PROVIDER: S-EPMC8667150 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature