Mutations in the pancreatic secretory enzymes CPA1 and CPB1 are associated with pancreatic cancer
Aged, 80 and over
Male
0303 health sciences
Carboxypeptidases A
Middle Aged
Endoplasmic Reticulum Stress
Carboxypeptidase B
Neoplasm Proteins
3. Good health
Pancreatic Neoplasms
03 medical and health sciences
Cell Line, Tumor
Mutation
Humans
Female
Genetic Predisposition to Disease
Aged
DOI:
10.1073/pnas.1720588115
Publication Date:
2018-04-19T15:15:22Z
AUTHORS (33)
ABSTRACT
Significance
Much of the inherited susceptibility to pancreatic cancer remains unexplained. Germline variants that cause protein misfolding and impaired secretion of pancreatic enzymes such as
CPA1
(encoding carboxypeptidase A1) can cause pancreatic acinar cell endoplasmic reticulum (ER) stress. We investigated the hypothesis that pancreatic cancer could arise from germline variants in genes encoding pancreatic secretory enzymes that induce pancreatic acinar cell stress. We find ∼1% of 1,579 patients with pancreatic cancer vs. 1 of 2,012 controls have germline variants in the genes encoding
CPA1
and
CPB1
(carboxypeptidase B1) that impair secretion of its protein product and induce ER stress. These findings implicate pancreatic acinar cell stress as a mechanism of pancreatic cancer susceptibility.
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