|
1
|
Liao CL, Hu RC, Liao MS, Chen YJ, Chen YP, Hsieh HH, Tai CH, Chou TC, Chu CY, Chen YJ, Lo LC, Lin JJ. Unveiling a novel serpinB2/tripeptidyl peptidase II signaling axis during senescence. J Cell Sci 2022; 135:275508. [PMID: 35466366 DOI: 10.1242/jcs.259513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 04/15/2022] [Indexed: 11/20/2022] Open
Abstract
Tripeptidyl peptidase II (TPPII) degrades N-terminal tripeptides from proteins and peptides. Studies in both human and mice have shown that TPPII deficiency is linked to cellular immune-senescence, lifespan regulation, and the aging process. However, the mechanism of how TPPII participates in these processes is less clear. In this study, we established a chemical probe-based assay and found that while the mRNA and protein levels of TPPII were not altered during senescence, its enzymatic activity was reduced in senescent human fibroblasts. We also showed that elevation of serine protease inhibitor serpinB2 reduced TPPII activity in senescent cells. Moreover, suppression of TPPII led to elevation of lysosomal contents as well as TPPI and -galactosidase activities, suggesting that the lysosome biogenesis is induced to compensate for the reduction of TPPII activity in senescent cells. Together this study discloses a critical role of the serpinB2/TPPII signaling pathway in proteostasis during senescence. Since serpinB2 level can be increased by a variety of cellular stresses, reduction of TPPII activity through activation of serpinB2 might represent a common pathway for cells to respond to different stress conditions.
Collapse
Affiliation(s)
- Chia-Li Liao
- Institute of Biochemistry and Molecular Biology, National Taiwan University College of Medicine, Taipei, 100, Taiwan
| | - Rong-Chi Hu
- Institute of Biochemistry and Molecular Biology, National Taiwan University College of Medicine, Taipei, 100, Taiwan
| | - Min-Shiang Liao
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Yi-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Ya-Ping Chen
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Hsi-Hsien Hsieh
- Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei, 112, Taiwan
| | - Chih-Hsuan Tai
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Tzyy-Chao Chou
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Chi-Yuan Chu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Yu-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Lee-Chiang Lo
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Jing-Jer Lin
- Institute of Biochemistry and Molecular Biology, National Taiwan University College of Medicine, Taipei, 100, Taiwan
| |
Collapse
|
|
2
|
Helda Malarkodi J, Murugavel S, Rosaline Ezhilarasi J, Dinesh M, Ponnuswamy A. Structure investigation, spectral characterization, electronic properties, and antimicrobial and molecular docking studies of 3′-(1-benzyl-5-methyl-1 H
-1,2,3-triazole-4-carbonyl)-1′-methyl-4′-phenyl-2 H
-spiro[acenaphthylene-1,2′-pyrrolidine]-2-one. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Saminathan Murugavel
- Department of Physics; Thanthai Periyar Government Institute of Technology; Vellore Tamil Nadu India
| | | | - Murugan Dinesh
- Department of Organic Chemistry, School of Chemistry; Madurai Kamaraj University; Madurai Tamil Nadu India
| | - Alagusundaram Ponnuswamy
- Department of Organic Chemistry, School of Chemistry; Madurai Kamaraj University; Madurai Tamil Nadu India
| |
Collapse
|
|
3
|
Hsu YL, Yang CC, Chou TC, Tai CH, Chen LY, Fu SL, Lin JJ, Lo LC. Design, synthesis, and evaluation of cell permeable probes for protein kinases. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.10.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|