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Guo Q, Pan K, Qiu P, Liu Z, Chen J, Lin J. Identification of an exosome-related signature associated with prognosis and immune infiltration in breast cancer. Sci Rep 2023; 13:18198. [PMID: 37875600 PMCID: PMC10598067 DOI: 10.1038/s41598-023-45325-7] [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: 07/08/2023] [Accepted: 10/18/2023] [Indexed: 10/26/2023] Open
Abstract
Exosomes, nanosized vesicles, play a vital role in breast cancer (BC) occurrence, development, and drug resistance. Hence, we proceeded to study the potential prognostic value of exosome-related genes and their relationship to the immune microenvironment in BC. 121 exosome-related genes were provided by the ExoBCD database, and 7 final genes were selected to construct the prognostic signature. Besides, the expression levels of the 7 exosome-related genes were validated by the experiment in BC cell lines. Based on the signature, BC patients from the training and validation cohorts were separated into low- and high-risk groups. Subsequently, the R clusterProfiler package was applied to identify the distinct enrichment pathways between high-risk groups and low-risk groups. The relevance of the tumor immune microenvironment and exosome-related gene risk score were analyzed in BC. Eventually, the different expression levels of immune checkpoint-related genes were compared between the two risk groups. Based on the risk model, the low-risk groups were identified with a higher survival rate both in the training and validation cohorts. A better overall survival was revealed in patients with higher scores evaluated by the estimation of stromal and immune cells in malignant tumor tissues using expression (ESTIMATE) algorithm. Subsequently, BC patients with lower risk scores were indicated by higher expression levels of some immune checkpoint-related genes and immune cell infiltration. Exosomes are closely associated with the prognosis and immune cell infiltration of BC. These findings may contribute to improving immunotherapy and provide a new vision for BC treatment strategies.
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Affiliation(s)
- Qiaonan Guo
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Kelun Pan
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Pengjun Qiu
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Zundong Liu
- Stem Cell Laboratory, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China
| | - Jianpeng Chen
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Jianqing Lin
- Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China.
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Zhang L, Li R, Hu K, Dai Y, Pang Y, Jiao Y, Liu Y, Cui L, Shi J, Cheng Z, Fu L. Prognostic role of DOK family adapters in acute myeloid leukemia. Cancer Gene Ther 2019; 26:305-312. [PMID: 30348947 DOI: 10.1038/s41417-018-0052-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/20/2018] [Accepted: 09/29/2018] [Indexed: 02/05/2023]
Abstract
Acute myeloid leukemia (AML) is a genetically and clinically heterogeneous disease. Gene mutational and expressional profile can aid the identification of different prognostic subgroups. Downstream of tyrosine kinase (DOK) proteins are a multigenic family of adaptors; some of them are key negative regulators of immune cell signaling. However, the expression and clinical implication of DOK family in AML has rarely been investigated. A total of 155 AML patients with DOK family (DOK1-7) expression data from The Cancer Genome Atlas database were enrolled in the study. In patients who only received chemotherapy, those with high expressions of DOK4 or DOK5 had significantly shorter EFS and OS than patients with low expressions (all P < 0.001), whereas high DOK7 expressers had longer EFS and OS than the low expressers (all P < 0.05). In patients who underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT), however, all DOK members had no impact on EFS and OS. Multivariate analysis confirmed that high DOK5 expression was an independent risk factor for EFS and OS in untransplanted patients (all P < 0.05). Our study suggests that in AML, high expressions of DOK4 and DOK5 are adverse prognostic factors, high DOK7 expression is a good prognostic factor, but their effects can be overcome by allo-HSCT.
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MESH Headings
- Adaptor Proteins, Signal Transducing/genetics
- Adult
- Aged
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Biomarkers, Tumor
- Databases, Genetic
- Female
- Gene Expression Regulation, Leukemic
- Humans
- Kaplan-Meier Estimate
- Leukemia, Myeloid, Acute/diagnosis
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/mortality
- Male
- Middle Aged
- Multigene Family
- Mutation
- Prognosis
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Affiliation(s)
- Lin Zhang
- Department of Human Resources, Huaihe Hospital of Henan University, 475000, Kaifeng, China
| | - Ran Li
- Department of Surgery, Huaihe Hospital of Henan University, 475000, Kaifeng, China
| | - Kai Hu
- Department of Hematology and Lymphoma Research Center, Peking University, Third Hospital, 100191, Beijing, China
| | - Yifeng Dai
- Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, 515041, Shantou, China
- Immunoendocrinology, Division of Medical Biology, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Yifan Pang
- Department of Medicine, William Beaumont Hospital, Royal Oak, MI, 48073, USA
| | - Yang Jiao
- Life Sciences Institute and Innovation Center for Cell Signaling Network, Zhejiang University, 310058, Hangzhou, China
| | - Yan Liu
- Translational Medicine Center, Huaihe Hospital of Henan University, 475000, Kaifeng, China
| | - Longzhen Cui
- Translational Medicine Center, Huaihe Hospital of Henan University, 475000, Kaifeng, China
| | - Jinlong Shi
- Translational Medicine Center, Huaihe Hospital of Henan University, 475000, Kaifeng, China
- Department of Biomedical Engineering, Chinese PLA General Hospital, 100853, Beijing, China
| | - Zhiheng Cheng
- Laboratory of Environmental Medicine and Developmental Toxicology, Shantou University Medical College, 515041, Shantou, China.
- Translational Medicine Center, Huaihe Hospital of Henan University, 475000, Kaifeng, China.
| | - Lin Fu
- Department of Hematology and Lymphoma Research Center, Peking University, Third Hospital, 100191, Beijing, China.
- Department of Hematology, Huaihe Hospital of Henan University, 475000, Kaifeng, China.
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Hua CD, Bian EB, Chen EF, Yang ZH, Tang F, Wang HL, Zhao B. Repression of Dok7 expression mediated by DNMT1 promotes glioma cells proliferation. Biomed Pharmacother 2018; 106:678-685. [PMID: 29990858 DOI: 10.1016/j.biopha.2018.06.156] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/27/2018] [Accepted: 06/27/2018] [Indexed: 11/25/2022] Open
Abstract
Malignant glioma is one of the most common primary human tumors in the central nervous system. The molecular mechanisms of the progression and development of glioma have been largely unexplored. In this study, we illustrated that the expression of Dok7 was downregulation in human glioma tissues. Dok7 overexpression significantly inhibits proliferation and colony formation in vitro, and the xenograft tumor formation in vivo. In addition, 5-Aza-2'-deoxycytidine (5-Aza), a DNA methylation inhibitor, preventing the loss of Dok7 expression by decreasing aberrant hypermethylation of Dok7 promoter in glioma cells. More importantly, DNMT1 knockdown induced the demethylation of Dok7 promoter, and enhanced the expression of Dok7 in gliomas. These results suggest that epigenetic silencing of Dok7 may provide a novel glioma treatment strategy.
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Affiliation(s)
- Cheng-Dao Hua
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Er-Bao Bian
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Er-Feng Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Zhi-Hao Yang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Feng Tang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Hong-Liang Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Bing Zhao
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, 230601, China; Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China.
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4
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Repression of DOK7 mediated by DNMT3A promotes the proliferation and invasion of KYSE410 and TE-12 ESCC cells. Biomed Pharmacother 2017; 90:93-99. [DOI: 10.1016/j.biopha.2017.02.111] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 02/23/2017] [Accepted: 02/24/2017] [Indexed: 12/13/2022] Open
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Fitzgerald LM, Browne EP, Christie KD, Punska EC, Simmons LO, Williams KE, Pentecost BT, M Jawale R, Otis CN, Arcaro KF. ELF5 and DOK7 regulation in anti-estrogen treated cells and tumors. Cancer Cell Int 2016; 16:8. [PMID: 26884724 PMCID: PMC4754800 DOI: 10.1186/s12935-016-0282-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 02/03/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Most women with primary breast cancers that express estrogen receptor alpha (ER or ESR1) are treated with endocrine therapies including the anti-estrogen tamoxifen, but resistance to these anti-endocrine therapies often develops. This study characterizes the expression of hormone receptors, and the mRNA and DNA methylation levels of docking protein 7 (DOK7), and E74-like factor 5 (ELF5), in 21 novel tamoxifen-resistant cell lines and extends the findings to primary and recurrent human breast tumors. METHODS Twenty-one tamoxifen-selected cell lines were developed through cloning by limiting dilution of an MCF-7 cell culture treated with 1 μM tamoxifen for 6 months. The parent (MCF-7) and tamoxifen-selected cell lines were characterized for protein expression of ER, progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) using immunohistochemistry (IHC). The mRNA levels of ER, DOK7, and ELF5 were assessed using quantitative RT-PCR. Promoter methylation levels of DOK7 and ELF5 were determined by pyrosequencing of bisulfite-modified DNA. The relationship between hormone receptor status and promoter methylation of DOK7 and ELF5 was further examined using available methylation array data (Illumina HM450) from a set of paired primary and second breast tumors from 24 women. RESULTS All 21 of the novel tamoxifen-selected cell lines are ER-positive, and HER2-negative, and 18 of the cell lines are PR-negative while the MCF-7 cells were scored as ER-positive, modestly PR-positive and HER2 negative. Expression of DOK7 and ELF5 is significantly up-regulated in half of the tamoxifen-selected cell lines as compared to the parental MCF-7. In contrast, the previously established ER-negative TMX2-28 cell line has decreased expression of both DOK7 and ELF5 and increased DNA methylation in the transcriptional start site region of these genes. ELF5 methylation was lower in second versus primary tumors in women who received anti-estrogen treatment, in PR-negative versus PR-positive tumors, and in the subset of PR-positive first tumors from the group of women who had second PR-negative tumors as compared to those who had second PR-positive tumors. CONCLUSIONS The distinct ELF5 methylation of PR-positive primary tumors from women who had a PR-negative recurrence indicates the possibility of stratification of women for tailored treatment in the early stages of disease.
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Affiliation(s)
- Lily M Fitzgerald
- Department of Environmental Science, University of Massachusetts Amherst, Amherst, MA USA
| | - Eva P Browne
- Department of Veterinary and Animal Science, University of Massachusetts Amherst, Amherst, MA USA
| | - Kevin D Christie
- Department of Biochemistry and Molecular Biology, University of Massachusetts Amherst, Amherst, MA USA
| | - Elizabeth C Punska
- Department of Veterinary and Animal Science, University of Massachusetts Amherst, Amherst, MA USA
| | - Leo O Simmons
- Department of Biochemistry and Molecular Biology, University of Massachusetts Amherst, Amherst, MA USA
| | - Kristin E Williams
- Department of Molecular and Cellular Biology, University of Massachusetts Amherst, Amherst, MA USA
| | - Brian T Pentecost
- Wadsworth Center, New York State Department of Health, Albany, NY USA
| | - Rahul M Jawale
- Pathology Department, Baystate Medical Center, Springfield, MA USA
| | | | - Kathleen F Arcaro
- Department of Veterinary and Animal Science, University of Massachusetts Amherst, Amherst, MA USA
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