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Zhao JY, Yuan XK, Luo RZ, Wang LX, Gu W, Yamane D, Feng H. Phospholipase A and acyltransferase 4/retinoic acid receptor responder 3 at the intersection of tumor suppression and pathogen restriction. Front Immunol 2023; 14:1107239. [PMID: 37063830 PMCID: PMC10102619 DOI: 10.3389/fimmu.2023.1107239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 03/22/2023] [Indexed: 04/03/2023] Open
Abstract
Phospholipase A and acyltransferase (PLAAT) 4 is a class II tumor suppressor with phospholipid metabolizing abilities. It was characterized in late 2000s, and has since been referred to as ‘tazarotene-induced gene 3’ (TIG3) or ‘retinoic acid receptor responder 3’ (RARRES3) as a key downstream effector of retinoic acid signaling. Two decades of research have revealed the complexity of its function and regulatory roles in suppressing tumorigenesis. However, more recent findings have also identified PLAAT4 as a key anti-microbial effector enzyme acting downstream of interferon regulatory factor 1 (IRF1) and interferons (IFNs), favoring protection from virus and parasite infections. Unveiling the molecular mechanisms underlying its action may thus open new therapeutic avenues for the treatment of both cancer and infectious diseases. Herein, we aim to summarize a brief history of PLAAT4 discovery, its transcriptional regulation, and the potential mechanisms in tumor prevention and anti-pathogen defense, and discuss potential future directions of PLAAT4 research toward the development of therapeutic approaches targeting this enzyme with pleiotropic functions.
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Affiliation(s)
- Jian-Yong Zhao
- Hospital of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Cangzhou, Hebei, China
| | - Xiang-Kun Yuan
- Hospital of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Cangzhou, Hebei, China
| | - Rui-Zhen Luo
- Hospital of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Cangzhou, Hebei, China
| | - Li-Xin Wang
- Hospital of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Cangzhou, Hebei, China
| | - Wei Gu
- School of Medicine, Chongqing University, Chongqing, China
| | - Daisuke Yamane
- Department of Diseases and Infection, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
- *Correspondence: Hui Feng, ; Daisuke Yamane,
| | - Hui Feng
- School of Medicine, Chongqing University, Chongqing, China
- *Correspondence: Hui Feng, ; Daisuke Yamane,
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Li TH, Wang YY, Zhao BB, Qin C, Li ZR, Wang WB. Phospholipase A/acyltransferase 4 is a prognostic biomarker and correlated with immune infiltrates in pancreatic cancer. Heliyon 2022; 8:e10416. [PMID: 36091946 PMCID: PMC9450081 DOI: 10.1016/j.heliyon.2022.e10416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 05/16/2022] [Accepted: 08/19/2022] [Indexed: 12/03/2022] Open
Abstract
Background Phospholipase A/acyltransferase (PLAAT) family exhibits O- and N-acyltransferase activity and biosynthesize N-acylated ethanolamine phospholipids. Previously, PLAAT4 was seen as a tumor suppressor, but the exact function of PLAAT4 in pancreatic cancer was still unknown. In this study, we investigated the relationship of PLAAT4 and pancreatic cancer. Methods Using the data from the cancer genome atlas (TCGA), Genotype-Tissue Expression (GTEx) database and Gene Expression Omnibus (GEO) datasets we compared the expression of PLAAT4 in normal and tumor tissues and analyzed the connections between PLAAT4 and several clinicopathological factors. Further, we conducted Gene ontology (GO) analysis, Gene set enrichment analysis (GSEA), single sample gene set enrichment analysis (ssGSEA) and estimate analysis to explore the association between PLAAT4 and biological function and immune infiltration. In addition, Kaplan-Meier (KM) analysis, univariate and multivariate Cox analysis were used to explore the association between PLAAT4 and prognosis. In addition, we plotted a nomogram according to the multivariate cox analysis visualizing the predictive ability of PLAAT4 on prognosis. In addition, we explore the influence of PLAAT4 on malignant behaviors of the pancreatic cancer cells in vitro. Results After comparing the expression of PLAAT4 in normal and tumor tissues, we found that the expression of PLAAT4 was significantly high in pancreatic ductal adenocarcinoma (PDAC) samples. In addition, the results of GO and GSEA found that the expression of PLAAT4 was related to cell cycle checkpoints, M phase, regulation by p53, cell cycle mitotic and etc. Further, ssGSEA has shown that PLAAT4 was positively related to the abundance of aDC, Th1 cells, Th2 cells and negatively related to the Th17 cells. Subsequently, KM analysis, univariate and multivariate Cox analysis were used to analyze the correlation between PLAAT4 and prognosis. Additionally, we found that higher expression of PLAAT4 was related to T stage, N stage, histologic grade, etc (P < 0.05) and has a significant correlation with poor Overall Survival (OS), Disease-Specific Survival (DSS) and Progression-Free Interval (PFI). At last, we proved that PLAAT4 contributed to the malignant behaviors of the pancreatic cancer cells. Conclusion This study indicated PLAAT4 as a novel prognostic biomarker and an important molecular that mediated immune response in pancreatic cancer.
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Affiliation(s)
- Tian-Hao Li
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Division of Plastic Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Yuan-Yang Wang
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Bang-Bo Zhao
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Cheng Qin
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Ze-Ru Li
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Wei-Bin Wang
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
- Corresponding author.
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Shen Z, Zhang C, Qu L, Lu C, Xiao M, Ni R, Liu J. MKP-4 suppresses hepatocarcinogenesis by targeting ERK1/2 pathway. Cancer Cell Int 2019; 19:61. [PMID: 30923463 PMCID: PMC6423746 DOI: 10.1186/s12935-019-0776-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 03/08/2019] [Indexed: 01/05/2023] Open
Abstract
Background Mitogen-activated protein kinase phosphatases-4 (MKP-4) is reported to exert a prognostic merit in hepatocarcinogenesis. However, the underlying molecular mechanisms have not been clearly defined. Methods Immunoprecipitation-mass spectrometry (IP-MS) approach was used to identify interactive proteins with MKP-4. Western blot and immunohistochemistry were employed to detect proteins in HCC tissues. Cell counting kit-8, colony formation, Edu incorporation and sphere formation assays were performed to investigate functions of MKP-4/ERK1/2 interaction. Tumor xenografts in nude mice were used to determine effects in vivo. Results Extracellular signal-regulated kinase 1 and 2 (ERK1/2) were identified as binding partners of MKP-4. Knockdown of MKP-4 increased cell proliferation and cancer stem cell (CSC) traits while upregulation of MKP-4 or pre-incubation with ERK1/2 inhibition reversed these effects. Mechanistically MKP-4 negatively regulated phosphorylation of ERK1/2 and reduced expressions of CyclinD1 and c-Myc. Both xenograft tumor models and clinical analysis of HCC patients indicated that lower expression of MKP-4 and higher expressions of ERK1/2 were associated with worse prognosis. Conclusions MKP-4-mediated dephosphorylation of ERK1/2 might serve as a novel tumor-suppressive mechanism and provide a potential therapy for HCC.
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Affiliation(s)
- Zhongyi Shen
- 1Department of Gastroenterology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001 Jiangsu People's Republic of China.,2Clinical Medicine Medical College, Nantong University, Nantong, Jiangsu People's Republic of China
| | - Chengliang Zhang
- 2Clinical Medicine Medical College, Nantong University, Nantong, Jiangsu People's Republic of China
| | - Lishuai Qu
- 1Department of Gastroenterology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001 Jiangsu People's Republic of China
| | - Cuihua Lu
- 1Department of Gastroenterology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001 Jiangsu People's Republic of China
| | - Mingbing Xiao
- 1Department of Gastroenterology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001 Jiangsu People's Republic of China
| | - Runzhou Ni
- 1Department of Gastroenterology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001 Jiangsu People's Republic of China
| | - Jinxia Liu
- 1Department of Gastroenterology, Affiliated Hospital of Nantong University, 20 Xisi Road, Nantong, 226001 Jiangsu People's Republic of China
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Transcriptomic profiles of tumor-associated neutrophils reveal prominent roles in enhancing angiogenesis in liver tumorigenesis in zebrafish. Sci Rep 2019; 9:1509. [PMID: 30728369 PMCID: PMC6365535 DOI: 10.1038/s41598-018-36605-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 10/31/2018] [Indexed: 12/12/2022] Open
Abstract
We have previously demonstrated the pro-tumoral role of neutrophils using a kras-induced zebrafish hepatocarcinogenesis model. To further illustrate the molecular basis of the pro-tumoral role, Tumor-associated neutrophils (TANs) were isolated by fluorescence-activated cell sorting (FACS) and transcriptomic analyses were carried out by RNA-Seq. Differentially expressed gene profiles of TANs from larvae, male and female livers indicate great variations during liver tumorigenesis, but the common responsive canonical pathways included an immune pathway (Acute Phase Response Signaling), a liver metabolism-related pathway (LXR/RXR Activation) and Thrombin Signaling. Consistent with the pro-tumoral role of TANs, gene module analysis identified a consistent down-regulation of Cytotoxicity module, which may allow continued proliferation of malignant cells. Gene Set Enrichment Analysis indicated up-regulation of several genes promoting angiogenesis. Consistent with this, we found decreased density of blood vessels accompanied with decreased oncogenic liver sizes in neutrophil-depleted larvae. Collectively, our study has indicated some molecular mechanisms of the pro-tumoral roles of TANs in hepatocarcinogenesis, including weakened immune clearance against tumor cells and enhanced function in angiogenesis.
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He K, Yu X, Wang X, Tang L, Cao Y, Xia J, Cheng J. Baicalein and Ly294002 induces liver cancer cells apoptosis via regulating phosphatidyl inositol 3-kinase/Akt signaling pathway. J Cancer Res Ther 2018; 14:S519-S525. [PMID: 29970718 DOI: 10.4103/0973-1482.235356] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Aim The aim of this study is to investigate the mechanism of baicalein in inducing human liver cell line SMMC-7721 apoptosis. Materials and Methods Twenty micromoles baicalein or 10 μM LY294002 was adopted to treat SMMC-7721 cells. Cell proliferation was tested by cell counting kit-8 assay. Cell cycle was determined by flow cytometry and cyclin D1 expression. Cell apoptosis was detected by annexin V/propidium iodide double staining. Phosphatidyl inositol 3-kinase (PI3K)/Akt signaling pathway was assessed by real-time polymerase chain reaction and Western blot. Results Baicalein suppressed liver cancer cell SMMC-7721 proliferation and induced cell apoptosis together with LY294002. Baicalein blocked cell cycle in G0-G1 phase and downregulated cyclin D1 level. Baicalein and LY294002 significantly suppressed PI3K/Akt signaling pathway-related molecule activity at both mRNA and protein levels (P < 0.05). Conclusion Baicalein can inhibit liver cancer cell proliferation and promote cell apoptosis by affecting PI3K/Akt signaling pathway together with LY294002.
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Affiliation(s)
- Kai He
- Department of Hepatobiliary Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Xiaolan Yu
- Department of Obstetrics and Gynecology, The Affiliated TCM Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Xiaoyan Wang
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Li Tang
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Yong Cao
- Experimental Medicine Center, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Jiyi Xia
- Cancer Research Center of Southwest Medical University, Luzhou, Sichuan, P.R. China
| | - Jinnan Cheng
- Department of Hepatobiliary Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, P.R. China
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Wang H, Xu H, Xu T, Tan C, Jiang M, Chen Y, Hu X, Zhou J, Shen J, Qin R, Hu D, Huang Q, Wang M, Wang L, Duan D, Yan Y, Chen J. High expression of TIG3 predicts poor survival in patients with primary glioblastoma. Tumour Biol 2017. [PMID: 28639915 DOI: 10.1177/1010428317712135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
TIG3 (tazarotene-induced gene 3) has been reported to suppress the progression of several malignancies, where this gene is universally downregulated. However, the expression of TIG3 in primary glioblastoma and its relevance to patient's prognosis have not been elaborated. Thus, this study was aimed to evaluate TIG3 expression level in primary glioblastoma and investigate the prognostic value of TIG3 for patients. The Cancer Genome Atlas database was first utilized to analyze the expression and prognostic potential of TIG3 in 528 glioblastoma cases. Compared with control group, glioblastoma showed significantly elevated TIG3 expression (p < 0.001). Log-rank analysis revealed that higher expression of TIG3 was associated with shorter overall survival (358vs 383 days, p = 0.039). Furthermore, TIG3 protein expression detected by immunohistochemistry confirmed positive correlation of TIG3 expression and glioma grade and upregulation of TIG3 in our cohort of 101 primary glioblastoma patients compared to 16 normal brains. Finally, Kaplan-Meier analysis and Cox regression analysis identified high TIG3 expression as an independent risk factor for overall survival of primary glioblastoma patients (overall survival, 10 vs 13 months, p = 0.033; hazard ratio = 1.542, p = 0.046). Together, this study indicated that increased expression of TIG3 in primary glioblastoma is a novel biomarker for predicting poor outcome of patients. We then hypothesize that TIG3 may function in a different pattern in glioblastoma.
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Affiliation(s)
- Hongxiang Wang
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Hanchong Xu
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Tao Xu
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Cong Tan
- 2 Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Mei Jiang
- 3 Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Yihong Chen
- 4 Department of Cardiology, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Xinyu Hu
- 3 Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Jinxu Zhou
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.,5 Department of Neurosurgery, The 101th Hospital of PLA, Wuxi, China
| | - Junyan Shen
- 3 Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Rong Qin
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China.,6 Department of Neurosurgery, The 184th Hospital of PLA, Yingtan, China
| | - Daiyu Hu
- 3 Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Qilin Huang
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Min Wang
- 3 Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Lian Wang
- 3 Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Dongxia Duan
- 3 Department of Regenerative Medicine, Tongji University School of Medicine, Shanghai, China
| | - Yong Yan
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Juxiang Chen
- 1 Department of Neurosurgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
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