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Yao W, Luo D, Lv Z, Yang Y, Wang L, Ma B, Xue D, Hao C, Zhang Y. The Rabep1-Mediated Endocytosis and Activation of Trypsinogen to Promote Pancreatic Stellate Cell Activation. Biomolecules 2022; 12:biom12081063. [PMID: 36008957 PMCID: PMC9406084 DOI: 10.3390/biom12081063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/26/2022] [Accepted: 07/29/2022] [Indexed: 02/01/2023] Open
Abstract
Background: The pathogenesis of chronic pancreatitis is still unclear. Trypsinogen activation is an active factor in acute pancreatitis that has not been studied in the occurrence of chronic pancreatitis. Methods: Immunofluorescence was used to detect the location and expression of trypsinogen in chronic pancreatitis and normal tissues. Microarray and single-cell RNA-seq (scRNA-seq) were used to screen core genes and pathways in pancreatic stellate cells (PSCs). Western blotting and immunofluorescence were used to verify trypsinogen expression in PSCs after silencing Rabep1. Immunofluorescence and flow cytometry were used to validate trypsinogen activation and PSC activation after intervening in the endocytosis pathway. Results: Endocytosed trypsinogen was found in PSCs in CP clinical samples. Bioinformatic analysis showed that Rabep1 is a core gene that regulates trypsinogen endocytosis through the endocytosis pathway, verified by Western blot and immunofluorescence. Immunofluorescence and flow cytometry analyses confirmed the activation of trypsinogen and PSCs through the endocytosis pathway in PSCs. Conclusion: This study discovered a new mechanism by which trypsinogen affects the activation of PSCs and the occurrence and development of CP. Through communication between pancreatic acinar cells and PSCs, trypsinogen can be endocytosed by PSCs and activated by the Rabep1 gene.
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Affiliation(s)
- Wenchao Yao
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Dankun Luo
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Zhenyi Lv
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Yang Yang
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Liyi Wang
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Biao Ma
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Dongbo Xue
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Chenjun Hao
- Key Laboratory of Hepatosplenic Surgery, Ministry of Education, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; (W.Y.); (D.L.); (Z.L.); (Y.Y.); (L.W.); (B.M.); (D.X.)
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
- Correspondence: (C.H.); (Y.Z.)
| | - Yingmei Zhang
- Department of General Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
- Correspondence: (C.H.); (Y.Z.)
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