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Wang Y, Yao J, Zhang Z, Wei L, Wang S. Generation of novel lipid metabolism-based signatures to predict prognosis and immunotherapy response for colorectal adenocarcinoma. Sci Rep 2024; 14:17158. [PMID: 39060344 PMCID: PMC11282063 DOI: 10.1038/s41598-024-67549-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Lipid metabolism reprogramming involves in epithelial-mesenchymal transition (EMT), cancer stemness and immune checkpoints (ICs), which influence the metastasis of cancer. This study aimed to generate lipid metabolism-based signatures to predict prognosis, immunotherapy and chemotherapy response for colorectal adenocarcinoma (COAD). Transcriptome data and clinical information of COAD patients were collected from the cancer genome atlas (TCGA) database. The expression of EMT-, stem cell-, and IC-related genes were assessed between COAD and control samples. Modules and genes correlated EMT, ICs and stemness signatures were identified through weighted gene co-expression network analysis (WGCNA). Prognostic signatures were generated and then the distribution of risk genes was evaluated using single-cell RNA sequencing (scRNA-seq) data from GSE132465 dataset. COAD patients exhibited increased EMT score and stemness along with decreased ICs. Next, 12 hub genes (PIK3CG, ALOX5AP, PIK3R5, TNFAIP8L2, DPEP2, PIK3CD, PIK3R6, GGT5, ELOVL4, PTGIS, CYP7B1 and PRKD1) were found within green and yellow modules correlated with EMT, stemness and ICs. Lipid metabolism-based prognostic signatures were generated based on PIK3CG, GGT5 and PTGIS. Patients with high-risk group had poor prognosis, elevated ESTIMATEScore and StromalScore, 100% mutation rate and higher TIDE score. Samples in low-risk group had more immunogenicity on ICIs. Notably, PIK3CG was expressed in B cells, while GGT5 and PTGIS were expressed in stromal cells. This study generates lipid metabolism-based signatures correlated with EMT, stemness and ICs for predicting prognosis of COAD, and provides potential therapeutic targets for immunotherapy in COAD.
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Affiliation(s)
- Yi Wang
- Department of Oncology and Hematology, Suzhou Kowloon Hospital, Shanghai Jiao Tong University School of Medicine, Suzhou, 215127, China
| | - Jun Yao
- Department of General Surgery, The Fourth Affiliated Hospital of Soochow University, Suzhou, 215127, China
| | - Zhe Zhang
- Department of General Surgery, The Fourth Affiliated Hospital of Soochow University, Suzhou, 215127, China
| | - Luxin Wei
- Department of General Surgery, The Fourth Affiliated Hospital of Soochow University, Suzhou, 215127, China
| | - Sheng Wang
- Department of General Surgery, The Fourth Affiliated Hospital of Soochow University, Suzhou, 215127, China.
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Huang Q, Li Z, Liu C. Prognostic Value of Fatty Acid Metabolism-related Genes in Patients with Bladder Cancer. Recent Pat Anticancer Drug Discov 2024; 19:328-341. [PMID: 38214320 DOI: 10.2174/1574892818666230516143945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/17/2023] [Accepted: 03/24/2023] [Indexed: 01/13/2024]
Abstract
INTRODUCTION This study aimed to explore the expression profiles of fatty acid metabolism- related genes (FAMRGs) in patients with bladder cancer (BLCA). METHODS The corresponding clinicopathological features of BLCA patients and RNA sequencing data were downloaded from TCGA and GSE13507. Univariate Cox regression was used to determine the prognostic value of FRGS in BLCA patients. LASSO regression analysis was then performed to select potential risk genes and eliminate genes that might overfit the model. Based on the independent prognostication-related FRGs, the nomogram survival model was established using the root mean square value of the R packet to predict the 1-year, 3-year, and 5-year survival rates of BLCA patients. By determining the area under the curve (AUC) value, the time-dependent receiver operating characteristic curve (ROC) was used to evaluate the prognostic efficiency of our model. RESULTS A total of 243 DEFRGs were identified. Twenty FRGs were found to be related to the prognosis of BLCA in the TCGA database. Survival curves showed that high-risk patients had significantly shorter OS than low-risk cases (p < 0.001). The AUC of risk was 0.784, which was superior to age, sex, and stage, suggesting that the risk score was more favorable in predicting OS than traditional pathologic prognostic factors. The AUC was 0.757 at 1 year, 0.732 at 3 years, and 0.733 at 5 year-OS. CONCLUSION In this study, we demonstrated that a FAMRG prognosis biomarker is associated with the tumor immune microenvironment in patients with BLCA.
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Affiliation(s)
- Qiuzheng Huang
- Department of Urology, Wenzhou Central Hospital, Wenzhou, Zhejiang, 325000, China
| | - Zhijia Li
- Department of Urology, Wenzhou Central Hospital, Wenzhou, Zhejiang, 325000, China
| | - Chao Liu
- Department of Urology, Wenzhou Central Hospital, Wenzhou, Zhejiang, 325000, China
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Jin H, Xia B, Wang J, Qi S, Jing W, Deng K, Yang J. A Novel Lipid Metabolism and Endoplasmic Reticulum Stress-Related Risk Model for Predicting Immune Infiltration and Prognosis in Colorectal Cancer. Int J Mol Sci 2023; 24:13854. [PMID: 37762157 PMCID: PMC10531437 DOI: 10.3390/ijms241813854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/28/2023] [Accepted: 09/02/2023] [Indexed: 09/29/2023] Open
Abstract
Lipid metabolism and endoplasmic reticulum stress exhibit crosstalk in various cancer types, which are closely associated with the progression of colorectal cancer (CRC). This study constructs a prognostic signature based on lipid metabolism and endoplasmic reticulum stress-related genes (LERGs) for CRC patients, aiming to predict the prognosis and immune response. RNA sequencing and clinical data from the TCGA and GEO databases were analyzed to identify differentially expressed LERGs with prognostic relevance using univariate Cox regression. Subsequently, a risk model was developed using the LASSO regression. CRC patients were stratified into low-risk and high-risk groups based on risk scores, with the high-risk cohort demonstrating a poorer clinical prognosis in multiple databases. The risk model showed robust correlations with clinical features, gene mutations, and treatment sensitivity. Significant differences in immune cell infiltration and the expression of immune-related factors were also detected between risk groups, and elevated scores of cytokines and failure factors were detected in single-cell RNA sequencing analysis. This research indicates that lipid metabolism and endoplasmic reticulum stress in CRC are correlated with tumor progression, an immunosuppressive landscape, and alterations of drug sensitivity. The developed risk model can serve as a powerful prognostic tool, offering critical insights for refining clinical management and optimizing treatment in CRC patients.
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Affiliation(s)
- Haoran Jin
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610017, China; (H.J.); (B.X.); (J.W.); (S.Q.); (W.J.)
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610017, China
| | - Bihan Xia
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610017, China; (H.J.); (B.X.); (J.W.); (S.Q.); (W.J.)
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610017, China
| | - Jin Wang
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610017, China; (H.J.); (B.X.); (J.W.); (S.Q.); (W.J.)
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610017, China
| | - Shaochong Qi
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610017, China; (H.J.); (B.X.); (J.W.); (S.Q.); (W.J.)
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610017, China
| | - Weina Jing
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610017, China; (H.J.); (B.X.); (J.W.); (S.Q.); (W.J.)
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610017, China
| | - Kai Deng
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610017, China; (H.J.); (B.X.); (J.W.); (S.Q.); (W.J.)
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610017, China
| | - Jinlin Yang
- Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610017, China; (H.J.); (B.X.); (J.W.); (S.Q.); (W.J.)
- Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu 610017, China
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Côrtes L, Basso TR, Villacis RAR, Souza JDS, Jørgensen MMA, Achatz MI, Rogatto SR. Co-Occurrence of Germline Genomic Variants and Copy Number Variations in Hereditary Breast and Colorectal Cancer Patients. Genes (Basel) 2023; 14:1580. [PMID: 37628631 PMCID: PMC10454294 DOI: 10.3390/genes14081580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023] Open
Abstract
Hereditary Breast and Ovarian Cancer (HBOC) syndrome is an autosomal dominant disease associated with a high risk of developing breast, ovarian, and other malignancies. Lynch syndrome is caused by mutations in mismatch repair genes predisposing to colorectal and endometrial cancers, among others. A rare phenotype overlapping hereditary colorectal and breast cancer syndromes is poorly characterized. Three breast and colorectal cancer unrelated patients fulfilling clinical criteria for HBOC were tested by whole exome sequencing. A family history of colorectal cancer was reported in two patients (cases 2 and 3). Several variants and copy number variations were identified, which potentially contribute to the cancer risk or prognosis. All patients presented copy number imbalances encompassing PMS2 (two deletions and one duplication), a known gene involved in the DNA mismatch repair pathway. Two patients showed gains covering the POLE2 (cases 1 and 3), which is associated with DNA replication. Germline potentially damaging variants were found in PTCH1 (patient 3), MAT1A, and WRN (patient 2). Overall, concurrent genomic alterations were described that may increase the risk of cancer appearance in HBOC patients with breast and colorectal cancers.
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Affiliation(s)
- Luiza Côrtes
- Department of Clinical Genetics, University Hospital of Southern Denmark, Beriderbakken 4, 7100 Vejle, Denmark; (L.C.); (T.R.B.); (M.M.A.J.)
- Tocogynecoly Graduation Program, Botucatu Medical School, University of São Paulo State—UNESP, Botucatu 18618-687, SP, Brazil
| | - Tatiane Ramos Basso
- Department of Clinical Genetics, University Hospital of Southern Denmark, Beriderbakken 4, 7100 Vejle, Denmark; (L.C.); (T.R.B.); (M.M.A.J.)
| | - Rolando André Rios Villacis
- Department of Genetics and Morphology, Institute of Biological Sciences, University of Brasília—UnB, Brasília 70910-900, DF, Brazil;
| | | | - Mads Malik Aagaard Jørgensen
- Department of Clinical Genetics, University Hospital of Southern Denmark, Beriderbakken 4, 7100 Vejle, Denmark; (L.C.); (T.R.B.); (M.M.A.J.)
| | - Maria Isabel Achatz
- Cancer Genetics Unit, Oncology Branch, Hospital Sirio-Libanês, São Paulo 01308-050, SP, Brazil;
| | - Silvia Regina Rogatto
- Department of Clinical Genetics, University Hospital of Southern Denmark, Beriderbakken 4, 7100 Vejle, Denmark; (L.C.); (T.R.B.); (M.M.A.J.)
- Institute of Regional Health Research, Faculty of Health Sciences, University of Southern Denmark, 5000 Odense, Denmark
- Danish Colorectal Cancer Center South, 7100 Vejle, Denmark
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Li L, Liu Y, Gao F, Fan P, Zhan W, Zhang S. Induced PSIG expression by Herbacetin contributes to suppressing the proliferation, migration, and invasion of melanoma cells. Arch Biochem Biophys 2023:109697. [PMID: 37481197 DOI: 10.1016/j.abb.2023.109697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 07/11/2023] [Accepted: 07/20/2023] [Indexed: 07/24/2023]
Abstract
Melanoma is a very common malignant tumor with poor prognosis. Herbacetin is a flavonol compound with outstanding anti-tumor effects. Our work investigated the biological effects and mechanism of Herbacetin in melanoma. In our study, the mRNA and protein expressions were assessed using qRT-PCR, Western blot and IHC. MSP was performed to evaluated PGIS promoter methylation level. Cell viability, migration and invasion were examined by MTT assay, transwell migration and invasion assay, respectively. Our results revealed that DNMT3B was markedly upregulated in melanoma, while PGIS was lowly expressed. Herbacetin treatment could not only inhibit the proliferation, migration, invasion of melanoma cells and inhibit the growth of melanoma in vivo. Herbacetin could also restore the abnormal expressions of DNMT3B and PGIS in melanoma cells and tumor tissues. PGIS silencing neutralized the inhibitory effects of Herbacetin on the malignant behaviors of melanoma cells. Besides, DNMT3B knockdown promoted PGIS expression via reducing PGIS promoter methylation level in melanoma cells, thereby inhibiting malignant behaviors of melanoma cells. And as expected, the inhibitory effects of Herbacetin on malignant behaviors of melanoma cells were all abolished by DNMT3B overexpression. Collectively, Herbacetin reduced DNMT3B expression to upregulate PGIS in melanoma cells and participated in suppressing the proliferation, migration, and invasion of melanoma cells.
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Affiliation(s)
- Lei Li
- Department of Plastic abd Cosmetic Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, PR China
| | - Yun Liu
- Department of Plastic abd Cosmetic Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, PR China
| | - Fei Gao
- Department of Plastic abd Cosmetic Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, PR China
| | - Pengfei Fan
- Department of Plastic abd Cosmetic Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, PR China
| | - Wang Zhan
- Department of Plastic abd Cosmetic Surgery, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, PR China
| | - Shuai Zhang
- Nursing Department, Hainan Affiliated Hospital of Hainan Medical University, Haikou, 570311, Hainan Province, PR China.
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Effects of Lipid Metabolism-Related Genes PTGIS and HRASLS on Phenotype, Prognosis, and Tumor Immunity in Lung Squamous Cell Carcinoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:6811625. [PMID: 36703911 PMCID: PMC9873467 DOI: 10.1155/2023/6811625] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 12/21/2022] [Accepted: 01/02/2023] [Indexed: 01/19/2023]
Abstract
Background Lipid metabolism reprogramming played an important role in cancer occurrence, development, and immune regulation. The aim of this study was to identify and validate lipid metabolism-related genes (LMRGs) associated with the phenotype, prognosis, and immunological characteristics of lung squamous cell carcinoma (LUSC). Methods In the TCGA cohort, bioinformatics and survival analysis were used to identify lipid metabolism-related differentially expressed genes (DEGs) associated with the prognosis of LUSC. PTGIS/HRASLS knockdown and overexpression effects on the LUSC phenotype were analyzed in vitro experiments. Based on the expression distribution of PTGIS/HRASLS, LUSC patients were divided into two clusters by consensus clustering. Clinical information, prognosis, immune infiltration, expression of immune checkpoints, and tumor mutation burden (TMB) level were compared between the TCGA and GSE4573 cohorts. The genes related to clustering and tumor immunity were screened by weighted gene coexpression network analysis (WGCNA), and the target module genes were analyzed by functional enrichment analysis, protein-protein interaction (PPI) analysis, and immune correlation analysis. Results 191 lipid metabolism-related DEGs were identified, of which 5 genes were independent prognostic genes of LUSC. PTGIS/HRASLS were most closely related to LUSC prognosis and immunity. RT-qPCR, western blot (WB) analysis, and immunohistochemistry (IHC) showed that the expression of PTGIS was low in LUSC, while HRASLS was high. Functionally, PTGIS promoted LUSC proliferation, migration, and invasion, while HRASLS inhibited LUSC proliferation, migration, and invasion. The two clusters' expression and distribution of PTGIS/HRASLS had the opposite trend. Cluster 1 was associated with lower pathological staging (pT, pN, and pTNM stages), better prognosis, stronger immune infiltration, higher expression of immune checkpoints, and higher TMB level than cluster 2. WGCNA found that 28 genes including CD4 and IL10RA were related to the expression of PTGIS/HRASLS and tumor immune infiltration. PTGIS/HRASLS in the GSE4573 cohort had the same effect on LUSC prognosis and tumor immunity as the TCGA cohort. Conclusions PTGIS and HRASLS can be used as new therapeutic targets for LUSC as well as biomarkers for prognosis and tumor immunity, which has positive significance for guiding the immunotherapy of LUSC.
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Xu Y, Xie YM, Sun WS, Zi R, Lu HQ, Xiao L, Gong KM, Guo SK. Exploration of an Prognostic Signature Related to Endoplasmic Reticulum Stress in Colorectal Adenocarcinoma and Their Response Targeting Immunotherapy. Technol Cancer Res Treat 2023; 22:15330338231212073. [PMID: 37920989 PMCID: PMC10623925 DOI: 10.1177/15330338231212073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 11/04/2023] Open
Abstract
Background: Endoplasmic reticulum (ER) stress plays a pro-apoptotic role in colorectal adenocarcinoma (COAD). This study aimed to develop a novel ER-stress-related prognostic risk model for COAD and provide support for COAD cohorts with different risk score responses to immune checkpoint inhibitor therapies. Methods: TCGA-COAD and GSE39582 were included in this prospective study. Univariate and multivariate Cox analyses were performed to identify prognostic ER stress-related genes (ERSGs). Accordingly, the immune infiltration landscape and immunotherapy response in different risk groups were assessed. Finally, the expression of prognostic genes in 10 normal and 10 COAD tissue samples was verified using reverse transcription-quantitative polymerase chain reaction. Results: Eight prognostic genes were selected to establish an ERSG-based signature in the training set of the TCGA-COAD cohort. The accuracy of this was confirmed using a testing set of TCGA-COAD and GSE39582 cohorts. Gene set variation analysis indicated that differential functionality in high-low-risk groups was related to immune-related pathways. Corresponding to this, CD36, TIMP1, and PTGIS were significantly associated with 19 immune cells with distinct proportions between the different risk groups, such as central memory CD4T cells and central memory CD8T cells. Moreover, the risk score was considered effective for predicting the clinical response to immunotherapy, and the immunotherapy response was significantly and negatively correlated with the risk score of individuals with COAD. Furthermore, the immune checkpoint inhibitor treatment was less effective in the high-risk group, where the expression levels of PD-L1 and tumor immune dysfunction and exclusion scores in the high-risk group were significantly increased. Finally, the experimental results demonstrated that the expression trends of prognostic genes in clinical samples were consistent with the results from public databases. Conclusion: Our study established a novel risk signature to predict the COAD prognosis of patients and provide theoretical support for the clinical treatment of COAD.
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Affiliation(s)
- Yu Xu
- Panzhihua Central Hospital, panzhihua, Sichuan Province, China
| | - Yang-Mei Xie
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, P.R. China
| | - Wen-Sha Sun
- The First Affiliated Hospital of Yunnan University of Traditional Chinese Medicine, Kunming, Yunnan, P.R. China
| | - Rong Zi
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, P.R. China
| | - Hong-Qiao Lu
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, P.R. China
| | - Le Xiao
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, P.R. China
| | - Kun-Mei Gong
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, P.R. China
| | - Shi-Kui Guo
- The Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, P.R. China
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Peng H, Weng L, Lei S, Hou S, Yang S, Li M, Zhao D. Hypoxia-hindered methylation of PTGIS in endometrial stromal cells accelerates endometriosis progression by inducing CD16 - NK-cell differentiation. Exp Mol Med 2022; 54:890-905. [PMID: 35781537 PMCID: PMC9356144 DOI: 10.1038/s12276-022-00793-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/23/2022] [Accepted: 04/11/2022] [Indexed: 11/15/2022] Open
Abstract
Prostacyclin (PGI2) plays key roles in shaping the immune microenvironment and modulating vasodilation, whereas its contribution to endometriosis (EMs) remains largely unclear. Our study suggested that prostacyclin synthase (PTGIS)-dependent PGI2 signaling was significantly activated in EMs, which was involved in the hypoxic microenvironment of ectopic lesions and deficient methylation status of the PTGIS promoter. Notably, in vitro assays, hypoxia promoted PTGIS expression through DNA methyltransferase 1 (DNMT1)-mediated DNA methylation deficiency in endometrial stromal cells (ESCs); PTGIS overexpression enhanced the adhesive ability of ESCs and led to elevated PGI2 production, and PGI2 triggered CD16− (encoded by FCGR3, Fc fragment of IgG receptor IIIa) natural killer (NK)-cell differentiation through PGI2 receptor (IP, PTGIR) in an ESC/NK-cell coculture system. Our rodent model experiment suggested that treatment with the PGI2 analog iloprost and adoptive transfer of fcgr3 knockout (fcgr3−/−) NK cells aggravated EMs progression and that genetic ablation of ptgis (ptgis−/−) in ectopic lesions and treatment with the PTGIR antagonist RO1138452 partially rescued this outcome. Thus, our findings identified the contribution of PGI2 to EMs progression via enhancement of the adhesive ability of ESCs and inhibition of the activity of NK cells. We hypothesized that PGI2 is a target for EMs intervention and provide a rationale for studying pharmacological PTGIR inhibition and PTGIS genetic depletion therapies as therapeutic strategies for EMs. Inhibiting the activity of a critical enzyme found overexpressed in endometriosis lesions could lead to novel therapeutics. Endometriosis affects around 10 per cent of women of reproductive age globally, yet the condition is poorly understood. Endometriosis lesions are known to be in a hypoxic, or low oxygen, state. Zhao Dong at Tongji University in Shanghai, China, and co-workers used human tissue samples and mouse models to determine the roles of a metabolite called prostacyclin (PGI2) and its catalytic enzyme (prostacyclin synthase, PTGIS) in endometriosis. PTGIS levels were significantly elevated in hypoxic endometrial cells, triggering the overproduction of PGI2. This PTGIS/PGI2 increase enhanced the adhesiveness of the cells, promoting survival of developing lesions. PGI2 overproduction also triggered abnormal differentiation of a specific group of immune cells called natural killer cells, disrupting the body’s immune response.
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Affiliation(s)
- Haiyan Peng
- Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Lichun Weng
- Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Shating Lei
- Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Shuhui Hou
- Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China
| | - Shaoliang Yang
- Laboratory for Reproductive Immunology, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China.,Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, 200032, China
| | - Mingqing Li
- Laboratory for Reproductive Immunology, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, 200011, China.,Key Laboratory of Reproduction Regulation of NPFPC, SIPPR, IRD, Fudan University, Shanghai, 200032, China
| | - Dong Zhao
- Shanghai Key Laboratory of Maternal Fetal Medicine, Clinical and Translational Research Center, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai, 200092, China. .,Department of Obstetrics and Gynecology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.
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Feddersen UR, Hendel SK, Berner-Hansen MA, Jepps TA, Berner-Hansen M, Bindslev N. Nanomolar EP4 receptor potency and expression of eicosanoid-related enzymes in normal appearing colonic mucosa from patients with colorectal neoplasia. BMC Gastroenterol 2022; 22:234. [PMID: 35549670 PMCID: PMC9097415 DOI: 10.1186/s12876-022-02311-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 04/27/2022] [Indexed: 12/13/2022] Open
Abstract
Background Aberrations in cyclooxygenase and lipoxygenase (LOX) pathways in non-neoplastic, normal appearing mucosa from patients with colorectal neoplasia (CRN), could hypothetically qualify as predisposing CRN-markers. Methods To test this hypothesis, biopsies were obtained during colonoscopy from macroscopically normal colonic mucosa from patients with and without CRN. Prostaglandin E2 (PGE2) receptors, EP1-4, were examined in Ussing-chambers by exposing biopsies to selective EP receptor agonists, antagonists and PGE2. Furthermore, mRNA expression of EP receptors, prostanoid synthases and LOX enzymes were evaluated with qPCR. Results Data suggest that PGE2 binds to both high and low affinity EP receptors. In particular, PGE2 demonstrated EP4 receptor potency in the low nanomolar range. Similar results were detected using EP2 and EP4 agonists. In CRN patients, mRNA-levels were higher for EP1 and EP2 receptors and for enzymes prostaglandin-I synthase, 5-LOX, 12-LOX and 15-LOX. Conclusions In conclusion, normal appearing colonic mucosa from CRN patients demonstrates deviating expression in eicosanoid pathways, which might indicate a likely predisposition for early CRN development and furthermore that PGE2 potently activates high affinity EP4 receptor subtypes, supporting relevance of testing EP4 antagonists in colorectal neoplasia management. Supplementary Information The online version contains supplementary material available at 10.1186/s12876-022-02311-z.
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Affiliation(s)
| | | | | | - Thomas Andrew Jepps
- Department of Biomedical Sciences, University of Copenhagen, 2200, Copenhagen N, Denmark
| | - Mark Berner-Hansen
- Digestive Disease Center, Bispebjerg Hospital, 2400, Copenhagen NV, Denmark
| | - Niels Bindslev
- Department of Biomedical Sciences, University of Copenhagen, 2200, Copenhagen N, Denmark
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Prostanoid Signaling in Cancers: Expression and Regulation Patterns of Enzymes and Receptors. BIOLOGY 2022; 11:biology11040590. [PMID: 35453789 PMCID: PMC9029281 DOI: 10.3390/biology11040590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/08/2022] [Accepted: 04/11/2022] [Indexed: 11/17/2022]
Abstract
Cancer-associated disturbance of prostanoid signaling provides an aberrant accumulation of prostanoids. This signaling consists of 19 target genes, encoding metabolic enzymes and G-protein-coupled receptors, and prostanoids (prostacyclin, thromboxane, and prostaglandins E2, F2α, D2, H2). The study addresses the systems biology analysis of target genes in 24 solid tumors using a data mining pipeline. We analyzed differential expression patterns of genes and proteins, promoter methylation status as well as tissue-specific master regulators and microRNAs. Tumor types were clustered into several groups according to gene expression patterns. Target genes were characterized as low mutated in tumors, with the exception of melanoma. We found at least six ubiquitin ligases and eight protein kinases that post-translationally modified the most connected proteins PTGES3 and PTGIS. Models of regulation of PTGIS and PTGIR gene expression in lung and uterine cancers were suggested. For the first time, we found associations between the patient’s overall survival rates with nine multigene transcriptomics signatures in eight tumors. Expression patterns of each of the six target genes have predictive value with respect to cytostatic therapy response. One of the consequences of the study is an assumption of prostanoid-dependent (or independent) tumor phenotypes. Thus, pharmacologic targeting the prostanoid signaling could be a probable additional anticancer strategy.
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11
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Wang Q, Morris RJ, Bode AM, Zhang T. Prostaglandin Pathways: Opportunities for Cancer Prevention and Therapy. Cancer Res 2021; 82:949-965. [PMID: 34949672 DOI: 10.1158/0008-5472.can-21-2297] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/27/2021] [Accepted: 12/17/2021] [Indexed: 11/16/2022]
Abstract
Because of profound effects observed in carcinogenesis, prostaglandins (PGs), prostaglandin-endoperoxide synthases, and PG receptors are implicated in cancer development and progression. Understanding the molecular mechanisms of PG actions has potential clinical relevance for cancer prevention and therapy. This review focuses on the current status of PG signaling pathways in modulating cancer progression and aims to provide insights into the mechanistic actions of PGs and their receptors in influencing tumor progression. We also examine several small molecules identified as having anticancer activity that target prostaglandin receptors. The literature suggests that targeting PG pathways could provide opportunities for cancer prevention and therapy.
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Affiliation(s)
- Qiushi Wang
- The Hormel Institute, University of Minnesota
| | | | - Ann M Bode
- The Hormel Institute, University of Minnesota
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12
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Zheng W, Wu F, Fu K, Sun G, Sun G, Li X, Jiang W, Cao H, Wang H, Tang W. Emerging Mechanisms and Treatment Progress on Liver Metastasis of Colorectal Cancer. Onco Targets Ther 2021; 14:3013-3036. [PMID: 33986602 PMCID: PMC8110277 DOI: 10.2147/ott.s301371] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 03/24/2021] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer is currently the third largest malignant tumor in the world, with high new cases and high mortality. Metastasis is one of the most common causes of death of colorectal cancer, of which liver metastasis is the most fatal. Since the beginning of the Human Genome Project in 2001, people have gradually recognized the 3 billion base pairs that make up the human genome, of which only about 1.5% of the nucleic acid sequences are used for protein coding, including proto-oncogenes and tumor suppressor genes. A large number of differences in the expression of proto-oncogenes and tumor suppressor genes have also been found in the study of colorectal cancer, which proves that they are also actively involved in the progression of colorectal cancer and promote the occurrence of liver metastasis. Except for 1.5% of the coding sequence, the rest of the nucleic acid sequence does not encode any protein, which is called non-coding RNA. With the deepening of research, genome sequences without protein coding potential that were originally considered “junk sequences” may have important biological functions. Many years of studies have found that a large number of abnormal expression of ncRNA in colorectal cancer liver metastasis, indicating that ncRNA plays an important role in it. To explore the role and mechanism of these coding sequences and non-coding RNA in liver metastasis of colorectal cancer is very important for the early diagnosis and treatment of liver metastasis of colorectal cancer. This article reviews the coding genes and ncRNA that have been found in the study of liver metastasis of colorectal cancer in recent years, as well as the mechanisms that have been identified or are still under study, as well as the clinical treatment of liver metastasis of colorectal cancer.
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Affiliation(s)
- Wubin Zheng
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Fan Wu
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Kai Fu
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Guangshun Sun
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Guoqiang Sun
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Xiao Li
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Wei Jiang
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Hongyong Cao
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Hanjin Wang
- Department of General Surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Weiwei Tang
- Hepatobiliary/Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Key Laboratory of Living Donor Transplantation, Chinese Academy of Medical Sciences, Nanjing, People's Republic of China
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Dai D, Chen B, Feng Y, Wang W, Jiang Y, Huang H, Liu J. Prognostic value of prostaglandin I2 synthase and its correlation with tumor-infiltrating immune cells in lung cancer, ovarian cancer, and gastric cancer. Aging (Albany NY) 2020; 12:9658-9685. [PMID: 32463792 PMCID: PMC7288932 DOI: 10.18632/aging.103235] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 04/27/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Prostaglandin I2 synthase (PTGIS) is a crucial gene for the synthesis of prostaglandin I2, which has multiple roles in inflammation and immune modulation. However, studies on the prognostic value of PTGIS and its correlation with tumor-infiltrating immune cells in multiple cancers are still rare. RESULTS Multiple datasets of the Oncomine database showed that PTGIS was expressed at low levels in lung cancer and ovarian cancer compared to the levels in normal tissues. Kaplan-Meier plotter showed that high PTGIS was associated with poor overall survival and progression-free survival in lung, ovarian, and gastric cancers. Moreover, PTGIS expression was significantly positively correlated with infiltrating levels of macrophages and was strongly associated with a variety of immune markers, especially tumor-associated macrophages (TAMs) and T-regulatory cells (Tregs). CONCLUSIONS High expression of PTGIS could promote the infiltration of TAMs and Tregs in the tumor microenvironment and deteriorate outcomes of patients with lung, ovarian, and gastric cancers. These findings suggest that PTGIS could be taken as a potential biomarker of prognosis and tumor-infiltrating immune cells. METHODS PTGIS expression was investigated in different datasets of the Oncomine database, and its expression levels in various tumors and corresponding normal tissues were analyzed by the Tumor Immune Estimation Resource (TIMER). Then, the clinical prognostic value of PTGIS was assessed with online public databases. In addition, we initially explored the correlation between PTGIS and tumor-infiltrating immune cells by TIMER and Gene Expression Profiling Interactive Analysis (GEPIA).
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Affiliation(s)
- Danian Dai
- Department of Gynecology and Obstetrics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
- Department of Gynecologic Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou 510060, Guangdong, China
| | - Bo Chen
- Department of Breast Cancer, Cancer Center, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Yanling Feng
- Department of Gynecology and Obstetrics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
- Department of Gynecologic Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou 510060, Guangdong, China
| | - Weizhong Wang
- Department of Respiratory Medicine, The First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Yanhui Jiang
- Department of Gynecology and Obstetrics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
- Department of Gynecologic Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou 510060, Guangdong, China
| | - He Huang
- Department of Gynecologic Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou 510060, Guangdong, China
| | - Jihong Liu
- Department of Gynecology and Obstetrics, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai 519000, Guangdong, China
- Department of Gynecologic Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou 510060, Guangdong, China
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14
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Kwon OK, Ha YS, Na AY, Chun SY, Kwon TG, Lee JN, Lee S. Identification of Novel Prognosis and Prediction Markers in Advanced Prostate Cancer Tissues Based on Quantitative Proteomics. Cancer Genomics Proteomics 2020; 17:195-208. [PMID: 32108042 PMCID: PMC7078833 DOI: 10.21873/cgp.20180] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/07/2019] [Accepted: 12/13/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND/AIM Prostate cancer (PCa) is the most frequent cancer found in males worldwide, and its mortality rate is increasing every year. However, there are no known molecular markers for advanced or aggressive PCa, and there is an urgent clinical need for biomarkers that can be used for prognosis and prediction of PCa. MATERIALS AND METHODS Mass spectrometry-based proteomics was used to identify new biomarkers in tissues obtained from patients with PCa who were diagnosed with T2, T3, or metastatic PCa in regional lymph nodes. RESULTS Among 1,904 proteins identified in the prostate tissues, 344 differentially expressed proteins were defined, of which 124 were up-regulated and 216 were down-regulated. Subsequently, based on the results of partial least squares discriminant analysis and Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses, we proposed that spermidine synthase (SRM), nucleolar and coiled-body phosphoprotein 1 (NOLC1), and prostacyclin synthase (PTGIS) represent new protein biomarkers for diagnosis of advanced PCa. These proteomics results were verified by immunoblot assays in metastatic PCa cell lines and by indirect enzyme-linked immunosorbent assay in prostate specimens. CONCLUSION SRM was significantly increased depending on the cancer stage, confirming the possibility of using SRM as a biomarker for prognosis and prediction of advanced PCa.
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Affiliation(s)
- Oh Kwang Kwon
- BK21 Plus KNU Multi-Omics Based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Yun-Sok Ha
- Department of Urology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Ann-Yae Na
- BK21 Plus KNU Multi-Omics Based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - So Young Chun
- Joint Institute for Regenerative Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Tae Gyun Kwon
- Department of Urology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
- Joint Institute for Regenerative Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jun Nyung Lee
- Department of Urology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Sangkyu Lee
- BK21 Plus KNU Multi-Omics Based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
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15
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Chen L, Zhang W, Li DY, Wang X, Tao Y, Zhang Y, Dong C, Zhao J, Zhang L, Zhang X, Guo J, Zhang X, Liao Q. Regulatory network analysis of LINC00472, a long noncoding RNA downregulated by DNA hypermethylation in colorectal cancer. Clin Genet 2018; 93:1189-1198. [PMID: 29488624 DOI: 10.1111/cge.13245] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 02/21/2018] [Accepted: 02/25/2018] [Indexed: 12/30/2022]
Abstract
Colorectal cancer (CRC), one of the common malignant cancers in the world, is caused by accumulated alterations of genetic and epigenetic factors over a long period of time. Along with that protein-coding genes being identified as oncogenes or tumor suppressors in CRC, a number of lncRNAs have also been found to be associated with CRC. Considering the important regulatory role of lncRNAs, the first goal of this study was to identify CRC-associated lncRNAs from a public database. One such lncRNA, LINC00472, was verified to be downregulated in CRC cell lines and cancer tissues compared with adjacent tissues. In addition, the down-regulation of LINC00472 seemed to be caused by DNA hypermethylation at its promoter region. Furthermore, the expression of LINC00472 and DNA methylation of promoter were significantly correlated with clinicopathological features. And DNA hypermethylation of LINC00472 may serve as a better diagnostic biomarker than its expression for CRC. Finally, we predicted the functions of LINC00472 and constructed a regulatory network and found LINC00472 may be involved in cell cycle and cell proliferation processes. Our results may provide a clue to further research into the function and regulatory mechanism of LINC00472 in CRC.
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Affiliation(s)
- L Chen
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - W Zhang
- Department of Medical Image, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - D Y Li
- Division of Cardiology, Department of Medicine, Columbia University Medical Center, New York, New York
| | - X Wang
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Y Tao
- Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Department of Preventative Medicine, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - Y Zhang
- Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Department of Preventative Medicine, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - C Dong
- Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Department of Preventative Medicine, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - J Zhao
- Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Department of Preventative Medicine, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - L Zhang
- Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Department of Preventative Medicine, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - X Zhang
- Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Department of Preventative Medicine, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - J Guo
- Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
| | - X Zhang
- Department of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, China
| | - Q Liao
- Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Department of Preventative Medicine, School of Medicine, Ningbo University, Ningbo, Zhejiang, China
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Biswas NK, Das S, Maitra A, Sarin R, Majumder PP. Somatic mutations in arachidonic acid metabolism pathway genes enhance oral cancer post-treatment disease-free survival. Nat Commun 2014; 5:5835. [PMID: 25517499 DOI: 10.1038/ncomms6835] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 11/11/2014] [Indexed: 01/17/2023] Open
Abstract
The arachidonic acid metabolism (AAM) pathway promotes tumour progression. Chemical inhibitors of AAM pathway prolong post-treatment survival of cancer patients. Here we test whether non-synonymous somatic mutations in genes of this pathway, acting as natural inhibitors, increase post-treatment survival. We identify loss-of-function somatic mutations in 15 (18%) of 84 treatment-naïve oral cancer patients by whole-exome sequencing, which we map to genes of AAM pathway. Patients (n = 53) who survived ≥ 12 months after surgery without recurrence have significantly (P = 0.007) higher proportion (26% versus 3%) of mutations than those who did not (n = 31). Patients with mutations have a significantly (P = 0.003) longer median disease-free survival (24 months) than those without (13 months). Compared with the presence of a mutation, absence of any mutation increases the hazard ratio for death (11.3) significantly (P = 0.018). The inferences are strengthened when we pool our data with The Cancer Genome Atlas (TCGA) data. In patients with AAM pathway mutations, some downstream pathways, such as the PI3K-Akt pathway, are downregulated.
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Affiliation(s)
- Nidhan K Biswas
- National Institute of Biomedical Genomics, Netaji Subhas Sanatorium (2nd Floor), Kalyani 741251, India
| | - Subrata Das
- National Institute of Biomedical Genomics, Netaji Subhas Sanatorium (2nd Floor), Kalyani 741251, India
| | - Arindam Maitra
- National Institute of Biomedical Genomics, Netaji Subhas Sanatorium (2nd Floor), Kalyani 741251, India
| | - Rajiv Sarin
- Tata Memorial Centre, Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai 410210, India
| | - Partha P Majumder
- National Institute of Biomedical Genomics, Netaji Subhas Sanatorium (2nd Floor), Kalyani 741251, India
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