Chymotrypsin Reduces the Severity of Secretagogue-Induced Pancreatitis in Mice.

Chymotrypsin Reduces the Severity of Secretagogue-Induced Pancreatitis in Mice.
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DOI:
10.1053/j.gastro.2018.06.041
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发表时间:
2018-10
期刊:
影响因子:
29.4
通讯作者:
Sahin-Tóth M
Sahin-Tóth M
中科院分区:
医学1区
文献类型:
--
作者:
Jancsó Z;Hegyi E;Sahin-Tóth M

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Intra-pancreatic activation of the digestive proteases trypsin and chymotrypsin is an early event in the development of pancreatitis. Human genetic studies indicate that chymotrypsin controls trypsin activity via degradation, but there is no evidence of this from animal models. We used CRISPR-Cas9 to disrupt the chymotrypsinogen B1 gene (Ctrb1) in C57BL/6N mice and induced pancreatitis in CTRB1-deficient and C57BL/6N (control) mice by administration of cerulein. CTRB1-deficient mice given cerulein had significant increases in intra-pancreatic trypsin activity and developed more severe pancreatitis compared with control mice. CTRB1 therefore protects against secretagogue-induced pancreatitis by reducing trypsin activity. Protease inhibitors developed for treatment of pancreatitis should be designed to target trypsin but not chymotrypsin.
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