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Xia D, Xu GP, Zhang YT, Yan WW, Pan XR, Tong JH. Targeting inhibition of TCTP could inhibit proliferation and induce apoptosis in AML cells. Cell Signal 2024; 117:111074. [PMID: 38309549 DOI: 10.1016/j.cellsig.2024.111074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/05/2024]
Abstract
Translationally controlled tumor protein (TCTP) is a highly conserved multifunctional protein, which participates in many important physiological processes. Recently, the roles of TCTP in cell proliferation and apoptosis, especially its close relationship with various tumors, have attracted widespread attention. In this study, we found that the protein level of TCTP was significantly reduced in acute promyelocytic leukemia cell line NB4 transfected with retinoic acid-induced gene G (RIG-G). The RIG-G was found in our previous work as a key mediator of anti-proliferative activity in retinoid/interferon-related pathways. Here, we tried to further explore the function of TCTP in the development of acute myeloid leukemia (AML) from different levels. Our results showed that inhibiting TCTP expression could attenuate AML cells proliferation and induce apoptosis both in AML cell lines and in xenograft of NOD-SCID mice. In addition, either compared with patients in complete remission or non-leukemia patients, we detected that the expression of TCTP was generally high in the fresh bone marrow of AML patients, suggesting that there was a certain correlation between TCTP and AML disease progression. Taken together, our study revealed the role of TCTP in AML development, and provided a potential target for AML treatment.
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Affiliation(s)
- Di Xia
- Central Laboratory, Rui-jin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Rui-jin Er Road, Shanghai 200025, China
| | - Gui-Ping Xu
- Transfusion Department, The Second Affiliated Hospital of Chongqing Medical University, No.74 Linjiang Road, Yuzhong District, Chongqing 400010, China
| | - Ying-Ting Zhang
- Central Laboratory, Rui-jin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Rui-jin Er Road, Shanghai 200025, China
| | - Wei-Wei Yan
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China
| | - Xiao-Rong Pan
- Faculty of Medical Laboratory Science, College of Health Science and Technology, Rui-Jin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Rui-jin Er Road, Shanghai 200025, China.
| | - Jian-Hua Tong
- Central Laboratory, Rui-jin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Rui-jin Er Road, Shanghai 200025, China.
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Cantrell MS, Wall JD, Pu X, Turner M, Woodbury L, Fujise K, McDougal OM, Warner LR. Expression and purification of a cleavable recombinant fortilin from Escherichia coli for structure activity studies. Protein Expr Purif 2022; 189:105989. [PMID: 34626801 PMCID: PMC8557625 DOI: 10.1016/j.pep.2021.105989] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/11/2021] [Accepted: 10/04/2021] [Indexed: 01/03/2023]
Abstract
Complications related to atherosclerosis account for approximately 1 in 4 deaths in the United States and treatment has focused on lowering serum LDL-cholesterol levels with statins. However, approximately 50% of those diagnosed with atherosclerosis have blood cholesterol levels within normal parameters. Human fortilin is an anti-apoptotic protein and a factor in macrophage-mediated atherosclerosis and is hypothesized to protect inflammatory macrophages from apoptosis, leading to subsequent cardiac pathogenesis. Fortilin is unique because it provides a novel drug target for atherosclerosis that goes beyond lowering cholesterol and utilization of a solution nuclear magnetic resonance (NMR) spectroscopy, structure-based drug discovery approach requires milligram quantities of pure, bioactive, recombinant fortilin. Here, we designed expression constructs with different affinity tags and protease cleavage sites to find optimal conditions to obtain the quantity and purity of protein necessary for structure activity relationship studies. Plasmids encoding fortilin with maltose binding protein (MBP), 6-histidine (6His) and glutathione-S-transferase (GST), N- terminal affinity tags were expressed and purified from Escherichia coli (E. coli). Cleavage sites with tobacco etch virus (TEV) protease and human rhinovirus (HRV) 3C protease were assessed. Despite high levels of expression of soluble protein, the fusion constructs were resistant to proteinases without the inclusion of amino acids between the cleavage site and N-terminus. We surveyed constructs with increasing lengths of glycine/serine (GGS) linkers between the cleavage site and fortilin and found that inclusion of at least one GGS insert led to successful protease cleavage and pure fortilin with conserved binding to calcium as measured by NMR.
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Affiliation(s)
- Maranda S Cantrell
- Biomolecular Sciences Ph.D. Program, Boise State University, Boise, ID, 83725, USA; Department of Chemistry and Biochemistry, Boise State University, Boise, ID, 83725, USA
| | - Jackson D Wall
- Department of Chemistry and Biochemistry, Boise State University, Boise, ID, 83725, USA
| | - Xinzhu Pu
- Biomolecular Research Center, Boise State University, Boise, ID, 83725, USA
| | - Matthew Turner
- Biomolecular Research Center, Boise State University, Boise, ID, 83725, USA
| | - Luke Woodbury
- Biomolecular Research Center, Boise State University, Boise, ID, 83725, USA
| | - Ken Fujise
- Harborview Medical Center, University of Washington, Seattle, WA, 98104-2499, USA
| | - Owen M McDougal
- Department of Chemistry and Biochemistry, Boise State University, Boise, ID, 83725, USA
| | - Lisa R Warner
- Department of Chemistry and Biochemistry, Boise State University, Boise, ID, 83725, USA.
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