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Uttam V, Kapoor HS, Rana MK, Yadav R, Prakash H, Jain M, Tuli HS, Jain A. Immune-Related Long Non-Coding RNA Signature Determines Prognosis and Immunotherapeutic Coherence in Esophageal Cancer. Cancer Inform 2024; 23:11769351241276757. [PMID: 39282627 PMCID: PMC11401149 DOI: 10.1177/11769351241276757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 07/31/2024] [Indexed: 09/19/2024] Open
Abstract
Objectives Aim of this study was to explore the immune-related lncRNAs having prognostic role and establishing risk score model for better prognosis and immunotherapeutic coherence for esophageal cancer (EC) patients. Methods To determine the role of immune-related lncRNAs in EC, we analyzed the RNA-seq expression data of 162 EC patients and 11 non-cancerous individuals and their clinically relevant information from the cancer genome atlas (TCGA) database. Bioinformatic and statistical analysis such as Differential expression analysis, co-expression analysis, Kaplan Meier survival analysis, Cox proportional hazards model, ROC analysis of risk model was employed. Results Utilizing a cutoff criterion (log2FC > 1 + log2FC < -1 and FDR < 0.01), we identified 3737 RNAs were significantly differentially expressed in EC patients. Among these, 2222 genes were classified as significantly differentially expressed mRNAs (demRNAs), and 966 were significantly differentially expressed lncRNAs (delncRNA). Through Pearson correlation analysis between differentially expressed lncRNAs and immune related-mRNAs, we identified 12 immune-related lncRNAs as prognostic signatures for EC. Notably, through Kaplan-Meier analysis on these lncRNAs, we found the low-risk group patients showed significantly improved survival compared to the high-risk group. Moreover, this prognostic signature has consistent performance across training, testing and entire validation cohort sets. Using ESTIMATE and CIBERSORT algorithm we further observed significant enriched infiltration of naive B cells, regulatory T cells resting CD4+ memory T cells, and, plasma cells in the low-risk group compared to high-risk EC patients group. On the contrary, tumor-associated M2 macrophages were highly enriched in high-risk patients. Additionally, we confirmed immune-related biological functions and pathways such as inflammatory, cytokines, chemokines response and natural killer cell-mediated cytotoxicity, toll-like receptor signaling pathways, JAK-STAT signaling pathways, chemokine signaling pathways significantly associated with identified IRlncRNA signature and their co-expressed immune genes. Furthermore, we assessed the predictive potential of the lncRNA signature in immune checkpoint inhibitors; we found that programed cell death ligand 1 (PD-L1; P-value = .048), programed cell death ligand 2 (PD-L2; P-value = .002), and T cell immunoglobulin and mucin-domain containing-3 (TIM-3; P-value = .045) expression levels were significantly higher in low-risk patients compared to high-risk patients. Conclusion We believe this study will contribute to better prognosis prediction and targeted treatment of EC in the future.
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Affiliation(s)
- Vivek Uttam
- Non-Coding RNA and Cancer Biology Lab, Department of Zoology, Central University of Punjab, Ghudda, Punjab, India
| | | | - Manjit Kaur Rana
- Department of Pathology/Lab Medicine, AIIMS, Bathinda, Punjab, India
| | - Ritu Yadav
- Non-Coding RNA and Cancer Biology Lab, Department of Zoology, Central University of Punjab, Ghudda, Punjab, India
| | | | - Manju Jain
- Department of Biochemistry, Central University of Punjab, Ghudda, Punjab, India
| | - Hardeep Singh Tuli
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana, India
| | - Aklank Jain
- Non-Coding RNA and Cancer Biology Lab, Department of Zoology, Central University of Punjab, Ghudda, Punjab, India
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Yang L, Zhao Q, Wang X, Pilapong C, Li Y, Zou J, Jin J, Rong J. Investigation on the regulatory T cells signature and relevant Foxp3/STAT3 axis in esophageal cancer. Cancer Med 2023; 12:4993-5008. [PMID: 36226375 PMCID: PMC9972178 DOI: 10.1002/cam4.5194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 08/05/2022] [Accepted: 08/14/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Regulatory T cells (Tregs) have an important role in accelerating the immunosuppression of tumor. Tregs regulation is a hopeful strategy to improve the dismal prognosis of Esophageal cancer (EC), while its mechanisms have not yet been fully clarified. METHODS To characterize the role of Tregs in EC, we comprehensively explored its prognostic value, clinical pathology partnership, related biological functions and potential mechanisms at transcriptome level. Through the integrated analysis of GEO and TCGA datasets, we comprehensively evaluated the Tregs infiltration patterns in EC patients. The correlation between Tregs infiltration and genomic characteristics, as well as biological functions were analyzed by a variety of computational algorithms. RESULTS We observed that Tregs were significantly upregulated in EC and involved in various immune processes. According to TCGA and GEO transcriptional classification schemes, Tregs specific genes were observed to be highly expressed in tumor samples, as well as were closely associated with poor prognosis and worse clinical outcomes. In addition, EC patients can be stratified into high-risk and low-risk immune subgroups according to Tregs/macrophages infiltration level, and the results showed significant differences in tumor development, biological processes and probe gene expression pattern. The multi-variate analysis revealed that the interaction between STAT3 and Foxp3 was a potential prognostic signature of Tregs in EC, especially the modulation effect of STAT3 on Foxp3 expression, which has not been well studied in EC. We also identified that STAT3 and Foxp3 expression presented a high accuracy in predicting Tregs infiltration level in EC patients (AUC: 0.817; 95% CI: 0.756-0.878). CONCLUSIONS Our results revealed that Tregs have the potential to predict prognosis and tumor deterioration in EC patients. A comprehensive landscape of Tregs regulation mechanisms will help us interpret the immunosuppression of tumor microenvironment (TME) and novel strategies for EC immunotherapy.
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Affiliation(s)
- Lin Yang
- Department of Oncology, The Second People's Hospital of Yibin, Yibin, People's Republic of China.,Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Qijie Zhao
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, People's Republic of China.,Center of Excellence for Molecular Imaging (CEMI), Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Xing Wang
- Shichuan Nursing Vocational College, Chengdu, People's Republic of China
| | - Chalermchai Pilapong
- Center of Excellence for Molecular Imaging (CEMI), Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Yi Li
- Department of Oncology, The Second People's Hospital of Yibin, Yibin, People's Republic of China
| | - Jun Zou
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Jing Jin
- Department of Oncology, The Second People's Hospital of Yibin, Yibin, People's Republic of China
| | - Jinfeng Rong
- Department of Oncology, The Second People's Hospital of Yibin, Yibin, People's Republic of China
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Bhat AA, Nisar S, Maacha S, Carneiro-Lobo TC, Akhtar S, Siveen KS, Wani NA, Rizwan A, Bagga P, Singh M, Reddy R, Uddin S, Grivel JC, Chand G, Frenneaux MP, Siddiqi MA, Bedognetti D, El-Rifai W, Macha MA, Haris M. Cytokine-chemokine network driven metastasis in esophageal cancer; promising avenue for targeted therapy. Mol Cancer 2021; 20:2. [PMID: 33390169 PMCID: PMC7780621 DOI: 10.1186/s12943-020-01294-3] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 12/06/2020] [Indexed: 02/08/2023] Open
Abstract
Esophageal cancer (EC) is a disease often marked by aggressive growth and poor prognosis. Lack of targeted therapies, resistance to chemoradiation therapy, and distant metastases among patients with advanced disease account for the high mortality rate. The tumor microenvironment (TME) contains several cell types, including fibroblasts, immune cells, adipocytes, stromal proteins, and growth factors, which play a significant role in supporting the growth and aggressive behavior of cancer cells. The complex and dynamic interactions of the secreted cytokines, chemokines, growth factors, and their receptors mediate chronic inflammation and immunosuppressive TME favoring tumor progression, metastasis, and decreased response to therapy. The molecular changes in the TME are used as biological markers for diagnosis, prognosis, and response to treatment in patients. This review highlighted the novel insights into the understanding and functional impact of deregulated cytokines and chemokines in imparting aggressive EC, stressing the nature and therapeutic consequences of the cytokine-chemokine network. We also discuss cytokine-chemokine oncogenic potential by contributing to the Epithelial-Mesenchymal Transition (EMT), angiogenesis, immunosuppression, metastatic niche, and therapeutic resistance development. In addition, it discusses the wide range of changes and intracellular signaling pathways that occur in the TME. Overall, this is a relatively unexplored field that could provide crucial insights into tumor immunology and encourage the effective application of modulatory cytokine-chemokine therapy to EC.
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Affiliation(s)
- Ajaz A Bhat
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Sabah Nisar
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar
| | - Selma Maacha
- Research Department, Sidra Medicine, Doha, Qatar
| | | | - Sabah Akhtar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | | | - Nissar A Wani
- Department of Biotechnology, Central University of Kashmir, Ganderbal, Jammu and Kashmir, India
| | - Arshi Rizwan
- Department of Nephrology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Puneet Bagga
- Diagnostic Imaging, St Jude Children's Research Hospital, Memphis, TN, USA
| | - Mayank Singh
- Dr. B. R. Ambedkar Institute Rotary Cancer Hospital (BRAIRCH), AIIMS, New Delhi, India
| | - Ravinder Reddy
- Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, USA
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | | | - Gyan Chand
- Department of Endocrine Surgery, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | | | - Mushtaq A Siddiqi
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science and Technology, Awantipora, Jammu & Kashmir, India
| | - Davide Bedognetti
- Laboratory of Cancer Immunogenomics, Cancer Research Department, Sidra Medicine, Doha, Qatar
- Department of Internal Medicine and Medical Specialties, University of Genoa, Genoa, Italy
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Wael El-Rifai
- Department of Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Muzafar A Macha
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science and Technology, Awantipora, Jammu & Kashmir, India.
| | - Mohammad Haris
- Functional and Molecular Imaging Laboratory, Cancer Research Department, Sidra Medicine, Doha, Qatar.
- Laboratory Animal Research Center, Qatar University, Doha, Qatar.
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Qiao YM, Zhang Y. Immunotherapy for esophageal cancer: Current studies and future perspectives. Shijie Huaren Xiaohua Zazhi 2016; 24:4739-4751. [DOI: 10.11569/wcjd.v24.i36.4739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Esophageal cancer is one of the most common malignant tumors of the digestive system, and China has the highest morbidity and mortality rates of esophageal cancer in the world. Currently, main therapies for esophageal cancer include endoscopy, surgery, chemotherapy, and radiotherapy. These traditional treatments have appreciated clinical effects, but the prognosis of this malignancy is still poor. There is accumulating evidence that tumor immune microenvironment plays a key role in the development and progression of esophageal cancer. Recent clinical investigations and ongoing studies indicate that immunotherapy might have a great potential in the treatment of patients with esophageal cancer. Future studies will identify treatment strategies that can maximize therapeutic benefits by combining immunotherapies with existing and novel treatment modalities.
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Hu J, Batth IS, Xia X, Li S. Regulation of NKG2D +CD8 + T-cell-mediated antitumor immune surveillance: Identification of a novel CD28 activation-mediated, STAT3 phosphorylation-dependent mechanism. Oncoimmunology 2016; 5:e1252012. [PMID: 28123894 DOI: 10.1080/2162402x.2016.1252012] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/10/2016] [Accepted: 10/19/2016] [Indexed: 01/06/2023] Open
Abstract
The natural killer (NK) group 2D (NKG2D) receptor, which displays on mouse and human NK cells, activates CD8+ T cells and small subsets of other T cells. NKG2D+CD8+ T cells play critical roles in both innate and adaptive immunity upon engagement with NKG2D ligands to eliminate tumor and infected cells. Despite the important role of NKG2D+CD8+ T cells in immune surveillance, the mechanisms of how NKG2D expression on CD8+ T cells is regulated remain poorly defined. We treated mouse and human CD8+ T cells with CD80 recombinant protein, plus a pharmacologic model with small molecular inhibitors to determine which signaling pathway leads to NKG2D regulation on CD8+T cells. This study revealed that CD28 activation gives rise to sustained NKG2D expression on both mouse and human CD8+ T cells in a signal transducer and activator of transcription 3 (STAT3) phosphorylation-dependent manner. Further, we found that CD28 activation stimulated sustained activation of the tyrosine kinase Lck, which recruits and triggers Janus kinase/STAT3 signaling to phosphorylate STAT3, and in turn increases NKG2D expression. Moreover, NKG2D induction on CD8+ T cells exerts cytolytic activity against target tumor cells in vitro, as well as significantly improves the antitumor therapeutic effects in vivo in an NKG2D-dependent manner. Taken together, these results elucidated a novel mechanism of NKG2D regulation by phosphorylated STAT3 (pSTAT3) on CD8+ T cells upon CD28 activation. This mechanism may shed light on the effectiveness of CD80-based, NKG2D-dependent antitumor immunotherapy.
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Affiliation(s)
- Jiemiao Hu
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
| | - Izhar S Batth
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
| | - Xueqing Xia
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
| | - Shulin Li
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
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The tumor microenvironment in esophageal cancer. Oncogene 2016; 35:5337-5349. [PMID: 26923327 PMCID: PMC5003768 DOI: 10.1038/onc.2016.34] [Citation(s) in RCA: 225] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 01/15/2016] [Accepted: 01/21/2016] [Indexed: 02/08/2023]
Abstract
Esophageal cancer is a deadly disease, ranking sixth among all cancers in mortality. Despite incremental advances in diagnostics and therapeutics, esophageal cancer still carries a poor prognosis, and thus there remains a need to elucidate the molecular mechanisms underlying this disease. There is accumulating evidence that a comprehensive understanding of the molecular composition of esophageal cancer requires attention to not only tumor cells but also the tumor microenvironment, which contains diverse cell populations, signaling factors, and structural molecules that interact with tumor cells and support all stages of tumorigenesis. In esophageal cancer, environmental exposures can trigger chronic inflammation, which leads to constitutive activation of pro-inflammatory signaling pathways that promote survival and proliferation. Anti-tumor immunity is attenuated by cell populations such as myeloid-derived suppressor cells (MDSCs) and regulatory T cells (Tregs), as well as immune checkpoints like programmed death-1 (PD-1). Other immune cells such as tumor-associated macrophages can have other pro-tumorigenic functions, including the induction of angiogenesis and tumor cell invasion. Cancer-associated fibroblasts secrete growth factors and alter the extracellular matrix (ECM) to create a tumor niche and enhance tumor cell migration and metastasis. Further study of how these TME components relate to the different stages of tumor progression in each esophageal cancer subtype will lead to development of novel and specific TME-targeting therapeutic strategies, which offer considerable potential especially in the setting of combination therapy.
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Rachidi SM, Qin T, Sun S, Zheng WJ, Li Z. Molecular profiling of multiple human cancers defines an inflammatory cancer-associated molecular pattern and uncovers KPNA2 as a uniform poor prognostic cancer marker. PLoS One 2013; 8:e57911. [PMID: 23536776 PMCID: PMC3607594 DOI: 10.1371/journal.pone.0057911] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/29/2013] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Immune evasion is one of the recognized hallmarks of cancer. Inflammatory responses to cancer can also contribute directly to oncogenesis. Since the immune system is hardwired to protect the host, there is a possibility that cancers, regardless of their histological origins, endow themselves with a common and shared inflammatory cancer-associated molecular pattern (iCAMP) to promote oncoinflammation. However, the definition of iCAMP has not been conceptually and experimentally investigated. METHODS AND FINDINGS Genome-wide cDNA expression data was analyzed for 221 normal and 324 cancer specimens from 7 cancer types: breast, prostate, lung, colon, gastric, oral and pancreatic. A total of 96 inflammatory genes with consistent dysregulation were identified, including 44 up-regulated and 52 down-regulated genes. Protein expression was confirmed by immunohistochemistry for some of these genes. The iCAMP contains proteins whose roles in cancer have been implicated and others which are yet to be appreciated. The clinical significance of many iCAMP genes was confirmed in multiple independent cohorts of colon and ovarian cancer patients. In both cases, better prognosis correlated strongly with high CXCL13 and low level of GREM1, LOX, TNFAIP6, CD36, and EDNRA. An "Inflammatory Gene Integrated Score" was further developed from the combination of 18 iCAMP genes in ovarian cancer, which predicted overall survival. Noticeably, as a selective nuclear import protein whose immuno-regulatory function just begins to emerge, karyopherin alpha 2 (KPNA2) is uniformly up-regulated across cancer types. For the first time, the cancer-specific up-regulation of KPNA2 and its clinical significance were verified by tissue microarray analysis in colon and head-neck cancers. CONCLUSION This work defines an inflammatory signature shared by seven epithelial cancer types and KPNA2 as a consistently up-regulated protein in cancer. Identification of iCAMP may not only serve as a novel biomarker for prognostication and individualized treatment of cancer, but also have significant biological implications.
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Affiliation(s)
- Saleh M. Rachidi
- Department of Microbiology and Immunology, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
- Hollings Cancer Center, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Tingting Qin
- Division of Bioinformatics, Department of Biochemistry and Molecular Biology, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Shaoli Sun
- Department of Pathology and Laboratory Medicine, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - W. Jim Zheng
- Division of Bioinformatics, Department of Biochemistry and Molecular Biology, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
- Computational Biology Core Facility, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Zihai Li
- Department of Microbiology and Immunology, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
- Hollings Cancer Center, South Carolina Clinical and Translational Research Institute (SCTR), Medical University of South Carolina, Charleston, South Carolina, United States of America
- * E-mail:
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Zhang Y, Eliav Y, Shin SU, Schreiber TH, Podack ER, Tadmor T, Rosenblatt JD. B lymphocyte inhibition of anti-tumor response depends on expansion of Treg but is independent of B-cell IL-10 secretion. Cancer Immunol Immunother 2013; 62:87-99. [PMID: 22772949 PMCID: PMC11029618 DOI: 10.1007/s00262-012-1313-6] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 06/20/2012] [Indexed: 01/09/2023]
Abstract
The mechanisms by which B lymphocytes inhibit anti-tumor immunity remain poorly understood. Murine EMT-6 mammary tumors grow readily in immune competent mice (BALB/c), but poorly in B-cell-deficient μ(-/-) BALB/c mice (BCDM). T regulatory cell (Treg) expansion and function were impaired in BCDM compared with BALB/c. In this study, we compared tumor growth, Treg cell proliferation, tumor lymphocyte infiltration and cytolytic T cell activity in BALB/c, BCDM and BCDM partially reconstituted with B cells by adoptive transfer (BCDM+B). Partial reconstitution of BCDM with adoptively transferred B cells restored EMT-6 tumor growth, which was independent of IL-10 secretion by B cells. Instead, high frequencies of intratumoral B cells were associated with increased recruitment and proliferation of Treg cells within the tumor microenvironment. The B-cell-dependent accumulation of Treg within the tumor microenvironment was associated with reduced tumor infiltration by CD49+ NK and CD8+ T cells and reduced cytotoxic T cell activity against EMT-6 targets. Our studies indicate that tumor-dependent immunosuppression of T-cell-mediated anti-tumor immunity is coordinated within the tumor microenvironment by B-cell-dependent cross talk with Treg cells, which does not require production of IL-10 by B cells.
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Affiliation(s)
- Yu Zhang
- Division of Hematology/Oncology, Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA.
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Cheng HH, Tseng GY, Yang HB, Wang HJ, Lin HJ, Wang WC. Increased numbers of Foxp3-positive regulatory T cells in gastritis, peptic ulcer and gastric adenocarcinoma. World J Gastroenterol 2012; 18:34-43. [PMID: 22228968 PMCID: PMC3251803 DOI: 10.3748/wjg.v18.i1.34] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 06/20/2011] [Accepted: 06/27/2011] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine the number of regulatory T cells (Tregs) in gastric mucosa of patients with gastritis, peptic ulcers and gastric cancer.
METHODS: This study was a retrospective analysis of gastric antrum biopsy specimens from healthy controls (n = 22) and patients with gastritis (n = 30), peptic ulcer (n = 83), or gastric cancer (n = 32). Expression of CD4, CD25 and Foxp3 was determined by immunohistochemistry in three consecutive sections per sample.
RESULTS: Compared with healthy controls, there was an increased number of CD25+ and Foxp3+ cells in patients with gastritis (P = 0.004 and P = 0.008), peptic ulcer (P < 0.001 and P < 0.001), and gastric cancer (P < 0.001 and P < 0.001). The ratio of CD25+/CD4+ or Foxp3+/CD4+ cells was also significantly higher in all disease groups (P < 0.001, respectively). The number of CD4+, CD25+, and Foxp3+ cells, and the ratio of CD25+/CD4+ and Foxp3+/CD4+ cells, were associated with the histological grade of the specimens, including acute inflammation, chronic inflammation, lymphoid follicle number, and Helicobacter pylori infection. The number of CD4+, CD25+ and Foxp3+ cells, and the ratio of CD25+/CD4+ and Foxp3+/CD4+ cells, were negatively associated with intestinal metaplasia among gastritis (P < 0.001, P < 0.001, P < 0.001, P = 0.002 and P = 0.002) and peptic ulcer groups (P = 0.013, P = 0.004, P < 0.001, P = 0.040 and P = 0.003).
CONCLUSION: Tregs are positively associated with endoscopic findings of gastroduodenal diseases and histological grade but negatively associated with intestinal metaplasia in gastritis and peptic ulcer groups.
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Maruyama T, Kono K, Izawa S, Mizukami Y, Kawaguchi Y, Mimura K, Watanabe M, Fujii H. CCL17 and CCL22 chemokines within tumor microenvironment are related to infiltration of regulatory T cells in esophageal squamous cell carcinoma. Dis Esophagus 2010; 23:422-9. [PMID: 20002703 DOI: 10.1111/j.1442-2050.2009.01029.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
It has been reported that an increased population of regulatory T cells (T-regs) is one of the reasons for impaired anti-tumor immunity. We investigated the frequency of Foxp3(+) T-regs in tumor-infiltrating lymphocytes (TILs) and peripheral blood lymphocytes (PBLs) of patients with esophageal squamous cell carcinoma (ESCC). Furthermore, in order to elucidate the mechanisms behind T-regs accumulation within tumors, we evaluated the relationship between CCL17 or CCL22 expression and the frequency of Foxp3(+) T-regs. CD4(+)CD25(+)Foxp3(+) T-regs as a percentage of CD4(+) cells were counted by flow cytometry. The frequency of CCL17(+) or CCL22(+) cells among CD14(+) cells in tumors was also evaluated by flow cytometry. Moreover, an in vitro migration assay using T-regs derived from ESCC was performed in the presence of CCL17 or CCL22. The frequency of Foxp3(+) T-regs in TILs was significantly higher than that in the normal esophageal mucosa (24.6 +/- 10.0 vs 7.1 +/- 5.9%, P < 0.01). The frequency of Foxp3(+) T-regs in PBLs of ESCC patients was significantly higher than that in normal healthy donors (7.0 +/- 4.2 vs 2.5 +/- 1.0%, P < 0.01). Furthermore, the frequency of CCL17(+) or CCL22(+) cells among CD14(+) cells within tumors was significantly higher than that of normal esophageal mucosa, and there was a significant correlation between the frequency of CCL17(+) or CCL22(+) cells and Foxp3(+) T-regs in TILs. In addition, the in vitro migration assay indicated that T-regs were significantly induced to migrate by CCL17 or CCL22. In conclusion, CCL17 and CCL22 within the tumor are related to the increased population of Foxp3(+) T-regs in ESCC.
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Affiliation(s)
- T Maruyama
- First Department of Surgery, University of Yamanashi, Chuo City, Yamanashi, Japan
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