1
|
Transcription factor Sp1 and oncoprotein PPP1R13L regulate nicotine-induced epithelial-mesenchymal transition in lung adenocarcinoma via a feedback loop. Biochem Pharmacol 2022; 206:115344. [DOI: 10.1016/j.bcp.2022.115344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/24/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
|
2
|
Zhang G, Yu T, Zhang Q, Zhang H, Xiao M, Cui S, Zhao Y, Lu X. Malignant transformation of human bronchial epithelial cells induced by benzo [a] pyrene suggests a negative feedback of TP53 to PPP1R13L via binding a possible enhancer element. Chem Biol Interact 2021; 349:109683. [PMID: 34610339 DOI: 10.1016/j.cbi.2021.109683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/11/2021] [Accepted: 09/09/2021] [Indexed: 01/29/2023]
Abstract
Previous studies have shown that PPP1R13L as an inhibitor of apoptosis protease TP53 can lead to abnormal cell proliferation and carcinogenesis, however, the function of PPP1R13L was complicated and the interaction between TP53 and PPP1R13L needs to be further explored. In the present study, a malignant transformation model of human bronchial epithelial cells induced by benzo (a) pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE) was established to observe the regulatory patterns between TP53 and PPP1R13L during carcinogenesis. In vitro experiments including CRISPR-Cas9 editing, RNA silence, Co-Immunoprecipitation and Chromatin Immunoprecipitation were applied to discuss their interactive effects. Additionally, TCGA data profile and our clinical samples of lung cancer were also used to analyze their relationship at the transcriptome level. Interestingly, we found that the mRNA and protein level of TP53 and PPP1R13L fluctuated as a wave in BPDE-induced malignant transformation under wild-type TP53 genetic background. Our results have also demonstrated that PPP1R13L acts as an inhibitor of TP53, while TP53 can regulate PPP1R13L via binding a possible enhancer of the first intron of PPP1R13L gene. Likewise, TCGA data and clinical samples have identified that in the case of TP53 mutation, TP53 expression was negatively correlated with PPP1R13L, while in the case of TP53 wild-type, TP53 expression was not correlated with PPP1R13L. It suggested that there existed a negative feedback of wild-type TP53 to PPP1R13L, which reminded a unique implication during chemical carcinogenesis.
Collapse
Affiliation(s)
- Guopei Zhang
- Dept. of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Tao Yu
- Dept. of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Qianye Zhang
- Dept. of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Hongchao Zhang
- Dept. of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Mingyang Xiao
- Dept. of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Su Cui
- Dept. of Thoracic Surgery Ward 2, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Yue Zhao
- Dept. of Cell Biology, Key Laboratory of Medical Cell Biology, Ministry of Education, School of Life Sciences, China Medical University, Shenyang, 110122, China
| | - Xiaobo Lu
- Dept. of Toxicology, School of Public Health, China Medical University, Shenyang, 110122, China.
| |
Collapse
|
3
|
Junaid M, Li CD, Shah M, Khan A, Guo H, Wei DQ. Extraction of molecular features for the drug discovery targeting protein-protein interaction of Helicobacter pylori CagA and tumor suppressor protein ASSP2. Proteins 2019; 87:837-849. [PMID: 31134671 DOI: 10.1002/prot.25748] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/04/2019] [Accepted: 05/22/2019] [Indexed: 12/13/2022]
Abstract
Half of the world population is infected by the Gram-negative bacterium Helicobacter pylori (H. pylori). It colonizes in the stomach and is associated with severe gastric pathologies including gastric cancer and peptic ulceration. The most virulent factor of H. pylori is the cytotoxin-associated gene A (CagA) that is injected into the host cell. CagA interacts with several host proteins and alters their function, thereby causing several diseases. The most well-known target of CagA is the tumor suppressor protein ASPP2. The subdomain I at the N-terminus of CagA interacts with the proline-rich motif of ASPP2. Here, in this study, we carried out alanine scanning mutagenesis and an extensive molecular dynamics simulation summing up to 3.8 μs to find out hot spot residues and discovered some new protein-protein interaction (PPI)-modulating molecules. Our findings are in line with previous biochemical studies and further suggested new residues that are crucial for binding. The alanine scanning showed that mutation of Y207 and T211 residues to alanine decreased the binding affinity. Likewise, dynamics simulation and molecular mechanics with generalized Born surface area (MMGBSA) analysis also showed the importance of these two residues at the interface. A four-feature pharmacophore model was developed based on these two residues, and top 10 molecules were filtered from ZINC, NCI, and ChEMBL databases. The good binding affinity of the CHEMBL17319 and CHEMBL1183979 molecules shows the reliability of our adopted protocol for binding hot spot residues. We believe that our study provides a new insight for using CagA as the therapeutic target for gastric cancer treatment and provides a platform for a future experimental study.
Collapse
Affiliation(s)
- Muhammad Junaid
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Cheng-Dong Li
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Masaud Shah
- Department of Molecular Science and Technology, Ajou University, Suwon, South Korea
| | - Abbas Khan
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Haoyue Guo
- Department of Physiology, McGill University, Montreal, Quebec, Canada
| | - Dong-Qing Wei
- State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
4
|
Cheng HW, Chein RJ, Cheng TJ, Wu PS, Wu HY, Hung PF, Wang CJ, Hsu YL, Wong JM, Yuan A, Wong CH, Yang PC, Pan SH. 2-anilino-4-amino-5-aroylthiazole-type compound AS7128 inhibits lung cancer growth through decreased iASPP and p53 interaction. Cancer Sci 2018; 109:832-842. [PMID: 29285847 PMCID: PMC5834782 DOI: 10.1111/cas.13489] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 12/20/2017] [Accepted: 12/25/2017] [Indexed: 12/17/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related death worldwide. Thus, developing novel therapeutic agents has become critical for lung cancer treatment. In this study, compound AS7128 was selected from a 2-million entry chemical library screening and identified as a candidate drug against non-small cell lung cancer in vitro and in vivo. Further investigation indicated that AS7128 could induce cell apoptosis and cell cycle arrest, especially in the mitosis stage. In addition, we also found that iASPP, an oncogenic protein that functionally inhibits p53, might be associated with AS7128 through mass identification. Further exploration indicated that AS7128 treatment could restore the transactivation ability of p53 and, thus, increase the expressions of its downstream target genes, which are related to cell cycle arrest and apoptosis. This occurs through disruption of the interactions between p53 and iASPP in cells. Taken together, AS7128 could bind to iASPP, disrupt the interaction between iASPP and p53, and result in cell cycle arrest and apoptosis. These findings may provide new insight for using iASPP as a therapeutic target for non-small cell lung cancer treatment.
Collapse
Affiliation(s)
- Hao-Wei Cheng
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan
| | | | - Ting-Jen Cheng
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Pei-Shan Wu
- Genome and Systems Biology Degree Program, National Taiwan University and Academia Sinica, Taipei, Taiwan
| | - Hsin-Yi Wu
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan
| | - Pei-Fang Hung
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chia-Jen Wang
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yuan-Ling Hsu
- Graduate Institute of Medical Genomics and Proteomics, National Taiwan University, Taipei, Taiwan
| | - Jau-Min Wong
- Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ang Yuan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Huey Wong
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Pan-Chyr Yang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Szu-Hua Pan
- Genome and Systems Biology Degree Program, National Taiwan University and Academia Sinica, Taipei, Taiwan.,Graduate Institute of Medical Genomics and Proteomics, National Taiwan University, Taipei, Taiwan.,Doctoral Degree Program of Translational Medicine, National Taiwan University, Taipei, Taiwan
| |
Collapse
|