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Boulter L, Bullock E, Mabruk Z, Brunton VG. The fibrotic and immune microenvironments as targetable drivers of metastasis. Br J Cancer 2021; 124:27-36. [PMID: 33239677 PMCID: PMC7782519 DOI: 10.1038/s41416-020-01172-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/29/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023] Open
Abstract
Although substantial progress has been made over the past 40 years in treating patients with cancer, effective therapies for those who are diagnosed with advanced metastatic disease are still few and far between. Cancer cells do not exist in isolation: rather, they exist within a complex microenvironment composed of stromal cells and extracellular matrix. Within this tumour microenvironment exists an interplay between the two main stromal cell subtypes, cancer-associated fibroblasts (CAFs) and immune cells, that are important in controlling metastasis. A complex network of paracrine signalling pathways between CAFs, immune cells and tumour cells are involved at multiple stages of the metastatic process, from invasion and intravasation at the primary tumour site to extravasation and colonisation in the metastatic site. Heterogeneity and plasticity within stromal cell populations also contribute to the complexity. Although many of these processes are likely to be common to a number of metastatic sites, we will describe in detail the interplay within the liver, a preferred site of metastasis for many tumours. A greater understanding of these networks provides opportunities for the design of new therapeutic approaches for targeting the metastatic disease.
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Affiliation(s)
- Luke Boulter
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Crewe Road South, Edinburgh, EH4 2XU, UK
| | - Esme Bullock
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Crewe Road South, Edinburgh, EH4 2XU, UK
| | - Zeanap Mabruk
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Crewe Road South, Edinburgh, EH4 2XU, UK
| | - Valerie G Brunton
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Crewe Road South, Edinburgh, EH4 2XU, UK.
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CC Chemokines in a Tumor: A Review of Pro-Cancer and Anti-Cancer Properties of the Ligands of Receptors CCR1, CCR2, CCR3, and CCR4. Int J Mol Sci 2020; 21:ijms21218412. [PMID: 33182504 PMCID: PMC7665155 DOI: 10.3390/ijms21218412] [Citation(s) in RCA: 168] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/06/2020] [Accepted: 11/08/2020] [Indexed: 12/14/2022] Open
Abstract
CC chemokines, a subfamily of 27 chemotactic cytokines, are a component of intercellular communication, which is crucial for the functioning of the tumor microenvironment. Although many individual chemokines have been well researched, there has been no comprehensive review presenting the role of all known human CC chemokines in the hallmarks of cancer, and this paper aims at filling this gap. The first part of this review discusses the importance of CCL1, CCL3, CCL4, CCL5, CCL18, CCL19, CCL20, CCL21, CCL25, CCL27, and CCL28 in cancer. Here, we discuss the significance of CCL2 (MCP-1), CCL7, CCL8, CCL11, CCL13, CCL14, CCL15, CCL16, CCL17, CCL22, CCL23, CCL24, and CCL26. The presentation of each chemokine includes its physiological function and then the role in tumor, including proliferation, drug resistance, migration, invasion, and organ-specific metastasis of tumor cells, as well as the effects on angiogenesis and lymphangiogenesis. We also discuss the effects of each CC chemokine on the recruitment of cancer-associated cells to the tumor niche (eosinophils, myeloid-derived suppressor cells (MDSC), tumor-associated macrophages (TAM), tumor-associated neutrophils (TAN), regulatory T cells (Treg)). On the other hand, we also present the anti-cancer properties of CC chemokines, consisting in the recruitment of tumor-infiltrating lymphocytes (TIL).
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Inflammation in Primary and Metastatic Liver Tumorigenesis-Under the Influence of Alcohol and High-Fat Diets. Nutrients 2020; 12:nu12040933. [PMID: 32230953 PMCID: PMC7230665 DOI: 10.3390/nu12040933] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/23/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023] Open
Abstract
The liver plays an outsized role in oncology. Liver tumors are one of the most frequently found tumors in cancer patients and these arise from either primary or metastatic disease. Hepatocellular carcinoma (HCC), the most prevalent form of primary liver cancer and the 6th most common cancer type overall, is expected to become the 3rd leading cause of cancer mortality in the US by the year 2030. The liver is also the most common site of distant metastasis from solid tumors. For instance, colorectal cancer (CRC) metastasizes to the liver in two-thirds of cases, and CRC liver metastasis is the leading cause of mortality in these patients. The interplay between inflammation and cancer is unmistakably evident in the liver. In nearly every case, HCC is diagnosed in chronic liver disease (CLD) and cirrhosis background. The consumption of a Western-style high-fat diet is a major risk factor for the development of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH), both of which are becoming more prevalent in parallel with the obesity epidemic. Excessive alcohol intake also contributes significantly to the CLD burden in the form of alcoholic liver disease (ALD). Inflammation is a key component in the development of all CLDs. Additionally, during the development of liver metastasis, pro-inflammatory signaling is crucial in eliminating invading cancer cells but ironically also helps foster a pro-metastatic environment that supports metastatic seeding and colonization. Here we review how Westernized high-fat diets and excessive alcohol intake can influence inflammation within the liver microenvironment, stimulating both primary and metastatic liver tumorigenesis.
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Siracusano G, Tagliamonte M, Buonaguro L, Lopalco L. Cell Surface Proteins in Hepatocellular Carcinoma: From Bench to Bedside. Vaccines (Basel) 2020; 8:vaccines8010041. [PMID: 31991677 PMCID: PMC7157713 DOI: 10.3390/vaccines8010041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/16/2020] [Accepted: 01/22/2020] [Indexed: 12/20/2022] Open
Abstract
Cell surface proteins act as the go-between in carrying the information from the extracellular environment to the intracellular signaling proteins. However, these proteins are often deregulated in neoplastic diseases, including hepatocellular carcinoma. This review discusses several recent studies that have investigated the role of cell surface proteins in the occurrence and progression of HCC, highlighting the possibility to use them as biomarkers of the disease and/or targets for vaccines and therapeutics.
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Affiliation(s)
- Gabriel Siracusano
- Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Scientific Institute, 20132 Milan, Italy;
- Correspondence: ; Tel.: +39-022643-4957
| | - Maria Tagliamonte
- Cancer Immunoregulation Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori IRCCS, “Fondazione Pascale”, 80131 Naples, Italy; (M.T.); (L.B.)
| | - Luigi Buonaguro
- Cancer Immunoregulation Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori IRCCS, “Fondazione Pascale”, 80131 Naples, Italy; (M.T.); (L.B.)
| | - Lucia Lopalco
- Division of Immunology, Transplantation and Infectious Diseases, San Raffaele Scientific Institute, 20132 Milan, Italy;
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Wiedemann GM, Röhrle N, Makeschin MC, Fesseler J, Endres S, Mayr D, Anz D. Peritumoural CCL1 and CCL22 expressing cells in hepatocellular carcinomas shape the tumour immune infiltrate. Pathology 2019; 51:586-592. [PMID: 31445808 DOI: 10.1016/j.pathol.2019.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 05/16/2019] [Accepted: 06/06/2019] [Indexed: 12/21/2022]
Abstract
Development, course of disease and prognosis of hepatocellular carcinomas (HCC) are strongly influenced by the immune system. Immunosuppressive regulatory T cells (Treg) have been shown to negatively impact disease progression and survival. To further understand the mechanisms of Treg attraction to HCC lesions, this study provides an analysis of Treg attracting chemokines in human HCC tissues. We analysed the expression of the Treg attracting chemokines CCL1 and CCL22 as well as the infiltration of FoxP3+ Treg and CD8+ T cells in paraffin-embedded tissue sections of 62 HCC patients. Expression of both chemokines was detected in 47 of 62 tissue slides. Chemokine expression was generally higher in tumour stroma and peritumoural liver tissue than in the tumour tissue itself. CD8+ T cells and FoxP3+ Treg were found at high levels in many tumour tissues. Intratumoural infiltration of Treg positively correlated with CCL22 levels in peritumoural liver tissue. In contrast, no correlation of Treg numbers and expression of CCL1 was detected. In summary, we describe here that the chemokines CCL1 and CCL22 are expressed in HCC tissues and, to a higher extent, in the stroma and peritumoural liver tissue. CCL22 may contribute to Treg recruitment and immunosuppression, whereas the role of CCL1 remains to be defined. It will be interesting to investigate the potential of these chemokines as drug targets for cancer therapy.
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Affiliation(s)
- Gabriela M Wiedemann
- Center of Integrated Protein Science Munich (CIPS-M), Division of Clinical Pharmacology, Klinikum der Universität München, Munich, Germany; Department of Medicine II, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Natascha Röhrle
- Center of Integrated Protein Science Munich (CIPS-M), Division of Clinical Pharmacology, Klinikum der Universität München, Munich, Germany
| | - Marie-Christine Makeschin
- Pathologisches Institut, Medizinische Fakultät der Ludwig-Maximilians Universität München, Munich, Germany
| | - Julia Fesseler
- Center of Integrated Protein Science Munich (CIPS-M), Division of Clinical Pharmacology, Klinikum der Universität München, Munich, Germany
| | - Stefan Endres
- Center of Integrated Protein Science Munich (CIPS-M), Division of Clinical Pharmacology, Klinikum der Universität München, Munich, Germany
| | - Doris Mayr
- Pathologisches Institut, Medizinische Fakultät der Ludwig-Maximilians Universität München, Munich, Germany
| | - David Anz
- Center of Integrated Protein Science Munich (CIPS-M), Division of Clinical Pharmacology, Klinikum der Universität München, Munich, Germany; Department of Medicine II, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany.
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6
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Nakatsumi H, Matsumoto M, Nakayama KI. Noncanonical Pathway for Regulation of CCL2 Expression by an mTORC1-FOXK1 Axis Promotes Recruitment of Tumor-Associated Macrophages. Cell Rep 2018; 21:2471-2486. [PMID: 29186685 DOI: 10.1016/j.celrep.2017.11.014] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 09/26/2017] [Accepted: 11/02/2017] [Indexed: 12/13/2022] Open
Abstract
C-C chemokine ligand 2 (CCL2) plays pivotal roles in tumor formation, progression, and metastasis. Although CCL2 expression has been found to be dependent on the nuclear factor (NF)-κB signaling pathway, the regulation of CCL2 production in tumor cells has remained unclear. We have identified a noncanonical pathway for regulation of CCL2 production that is mediated by mammalian target of rapamycin complex 1 (mTORC1) but independent of NF-κB. Multiple phosphoproteomics approaches identified the transcription factor forkhead box K1 (FOXK1) as a downstream target of mTORC1. Activation of mTORC1 induces dephosphorylation of FOXK1, resulting in transactivation of the CCL2 gene. Inhibition of the mTORC1-FOXK1 axis attenuated insulin-induced CCL2 production as well as the accumulation of tumor-associated monocytes-macrophages and tumor progression in mice. Our results suggest that FOXK1 directly links mTORC1 signaling and CCL2 expression in a manner independent of NF-κB and that CCL2 produced by this pathway contributes to tumor progression.
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Affiliation(s)
- Hirokazu Nakatsumi
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Masaki Matsumoto
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan
| | - Keiichi I Nakayama
- Department of Molecular and Cellular Biology, Medical Institute of Bioregulation, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Fukuoka 812-8582, Japan.
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Peng WT, Sun WY, Li XR, Sun JC, Du JJ, Wei W. Emerging Roles of G Protein-Coupled Receptors in Hepatocellular Carcinoma. Int J Mol Sci 2018; 19:ijms19051366. [PMID: 29734668 PMCID: PMC5983678 DOI: 10.3390/ijms19051366] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 04/24/2018] [Accepted: 04/26/2018] [Indexed: 12/13/2022] Open
Abstract
Among a great variety of cell surface receptors, the largest superfamily is G protein-coupled receptors (GPCRs), also known as seven-transmembrane domain receptors. GPCRs can modulate diverse signal-transduction pathways through G protein-dependent or independent pathways which involve β-arrestins, G protein receptor kinases (GRKs), ion channels, or Src kinases under physiological and pathological conditions. Recent studies have revealed the crucial role of GPCRs in the tumorigenesis and the development of cancer metastasis. We will sum up the functions of GPCRs—particularly those coupled to chemokines, prostaglandin, lysophosphatidic acid, endothelin, catecholamine, and angiotensin—in the proliferation, invasion, metastasis, and angiogenesis of hepatoma cells and the development of hepatocellular carcinoma (HCC) in this review. We also highlight the potential avenues of GPCR-based therapeutics for HCC.
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Affiliation(s)
- Wen-Ting Peng
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China.
- Key Laboratory of Antiinflammatory and Immune Medicine, Ministry of Education, Hefei 230032, China.
- Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Hefei 230032, China.
| | - Wu-Yi Sun
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China.
- Key Laboratory of Antiinflammatory and Immune Medicine, Ministry of Education, Hefei 230032, China.
- Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Hefei 230032, China.
| | - Xin-Ran Li
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China.
- Key Laboratory of Antiinflammatory and Immune Medicine, Ministry of Education, Hefei 230032, China.
- Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Hefei 230032, China.
| | - Jia-Chang Sun
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China.
- Key Laboratory of Antiinflammatory and Immune Medicine, Ministry of Education, Hefei 230032, China.
- Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Hefei 230032, China.
| | - Jia-Jia Du
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China.
- Key Laboratory of Antiinflammatory and Immune Medicine, Ministry of Education, Hefei 230032, China.
- Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Hefei 230032, China.
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, China.
- Key Laboratory of Antiinflammatory and Immune Medicine, Ministry of Education, Hefei 230032, China.
- Anhui Collaborative Innovation Center of Anti-Inflammatory and Immune Medicine, Hefei 230032, China.
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8
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Li R, Zhang H, Liu H, Lin C, Cao Y, Zhang W, Shen Z, Xu J. High expression of C-C chemokine receptor 2 associates with poor overall survival in gastric cancer patients after surgical resection. Oncotarget 2018; 7:23909-18. [PMID: 26992207 PMCID: PMC5029673 DOI: 10.18632/oncotarget.8069] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 02/28/2016] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Being a critical chemokine receptor in chemoattracting myeloid cells into tumor tissues, C-C chemokine receptor 2 (CCR2) has been detected in many malignant tumors. This study aims to evaluate the prognostic value of CCR2 expression in patients with gastric cancer after surgery. RESULTS CCR2 expression was detected in the accessory cells around gastric cancer cells in a diffused manner. CCR2 high expression was correlated with tumor invasion depth (P=0.006 and P=0.004, respectively), lymph node metastasis (P=0.038 and P=0.011, respectively) and TNM stage (P=0.003 and P=0.001, respectively) in the two independent sets. Multivariate Cox regression analysis identifies CCR2 high expression was an independent poor prognostic factor for OS of patients with gastric cancer in the two sets (P=0.013 and P=0.006, respectively). Integration of CCR2 expression and TNM stage could provide additional prognostic value for OS than TNM stage alone in the two sets (P=0.038 and P=0.002, respectively). METHODS Two independent sets comprising a total of 474 patients who received standard gastrectomy were enrolled in the study. The expression level of CCR2 was detected by immunohistochemistry. The correlations between CCR2 expression and clinicopathological factors were explored, and the prognostic significance for overall survival (OS) was determined by Kaplan-Meier analysis. CONCLUSIONS CCR2 high expression in the tumor microenvironment is a novel independent unfavorable prognostic factor for patients with gastric cancer. Combination of CCR2 expression and TNM stage could provide a better prognostic model for OS of gastric cancer patients.
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Affiliation(s)
- Ruochen Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Heng Zhang
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hao Liu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chao Lin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yifan Cao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Weijuan Zhang
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Zhenbin Shen
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiejie Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai, China
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9
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Murray PJ. Nonresolving macrophage-mediated inflammation in malignancy. FEBS J 2017; 285:641-653. [PMID: 28857430 DOI: 10.1111/febs.14210] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/07/2017] [Accepted: 08/25/2017] [Indexed: 12/14/2022]
Abstract
Tumors are populated with different cells of the immune system, each of which has the potential for pro- or antitumor functions. Macrophages are the numerically dominant type of myeloid cell in cancer and are suspected of having predominantly protumor functions. Key questions in cancer research concern the relationships between macrophages and anatomically different kinds of cancers, what specific properties of macrophages are involved in protumor functions and whether either macrophage numbers or functions can be modulated to enhance existing cancer therapies, for example, by reducing the immunosuppressive milieu such that anti-tumor T cells can provoke antitumor immunity. Accordingly, several antimacrophage preclinical modalities have been attempted and revealed substantial clinical barriers to their use. Therefore, understanding and targeting the specific pathways associated with protumor functions of macrophages, rather than macrophages themselves is a promising approach for both basic research and therapeutic development.
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Affiliation(s)
- Peter J Murray
- Immunoregulation Group, Max-Planck-Institut für Biochemie, Martinsried, Germany
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10
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Brodt P. Role of the Microenvironment in Liver Metastasis: From Pre- to Prometastatic Niches. Clin Cancer Res 2016; 22:5971-5982. [PMID: 27797969 DOI: 10.1158/1078-0432.ccr-16-0460] [Citation(s) in RCA: 189] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 09/19/2016] [Accepted: 09/22/2016] [Indexed: 01/14/2023]
Abstract
Liver metastases remain a major barrier to successful management of malignant disease, particularly for cancers of the gastrointestinal tract but also for other malignancies, such as breast carcinoma and melanoma. The ability of metastatic cells to survive and proliferate in the liver is determined by the outcome of complex, reciprocal interactions between tumor cells and different local resident subpopulations, including the sinusoidal endothelium, stellate, Kupffer, and inflammatory cells that are mediated through cell-cell and cell-extracellular matrix adhesion and the release of soluble factors. Cross-communication between different hepatic resident cells in response to local tissue damage and inflammation and the recruitment of bone marrow cells further enhance this intercellular communication network. Both resident and recruited cells can play opposing roles in the progression of metastasis, and the balance of these divergent effects determines whether the tumor cells will die, proliferate, and colonize the new site or enter a state of dormancy. Moreover, this delicate balance can be tilted in favor of metastasis, if factors produced by the primary tumor precondition the microenvironment to form niches of activated resident cells that promote tumor expansion. This review aims to summarize current knowledge on these diverse interactions and the impact they can have on the clinical management of hepatic metastases. Clin Cancer Res; 22(24); 5971-82. ©2016 AACR.
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Affiliation(s)
- Pnina Brodt
- Departments of Surgery, Medicine, and Oncology, McGill University and the McGill University Health Centre, Montreal, Quebec, Canada.
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11
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Vaccine-induced tumor regression requires a dynamic cooperation between T cells and myeloid cells at the tumor site. Oncotarget 2016; 6:27832-46. [PMID: 26337837 PMCID: PMC4695029 DOI: 10.18632/oncotarget.4940] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 07/29/2015] [Indexed: 12/31/2022] Open
Abstract
Most cancer immunotherapies under present investigation are based on the belief that cytotoxic T cells are the most important anti-tumoral immune cells, whereas intra-tumoral macrophages would rather play a pro-tumoral role. We have challenged this antagonistic point of view and searched for collaborative contributions by tumor-infiltrating T cells and macrophages, reminiscent of those observed in anti-infectious responses. We demonstrate that, in a model of therapeutic vaccination, cooperation between myeloid cells and T cells is indeed required for tumor rejection. Vaccination elicited an early rise of CD11b+ myeloid cells that preceded and conditioned the intra-tumoral accumulation of CD8+ T cells. Conversely, CD8+ T cells and IFNγ production activated myeloid cells were required for tumor regression. A 4-fold reduction of CD8+ T cell infiltrate in CXCR3KO mice did not prevent tumor regression, whereas a reduction of tumor-infiltrating myeloid cells significantly interfered with vaccine efficiency. We show that macrophages from regressing tumors can kill tumor cells in two ways: phagocytosis and TNFα release. Altogether, our data suggest new strategies to improve the efficiency of cancer immunotherapies, by promoting intra-tumoral cooperation between macrophages and T cells.
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12
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Tsunekawa N, Higashi N, Kogane Y, Waki M, Shida H, Nishimura Y, Adachi H, Nakajima M, Irimura T. Heparanase augments inflammatory chemokine production from colorectal carcinoma cell lines. Biochem Biophys Res Commun 2015; 469:878-83. [PMID: 26713365 DOI: 10.1016/j.bbrc.2015.12.074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 12/18/2015] [Indexed: 10/22/2022]
Abstract
To explore possible roles of heparanase in cancer-host crosstalk, we examined whether heparanase influences expression of inflammatory chemokines in colorectal cancer cells. Murine colorectal carcinoma cells incubated with heparanase upregulated MCP-1, KC, and RANTES genes and released MCP-1 and KC proteins. Heparanase-dependent production of IL-8 was detected in two human colorectal carcinoma cell lines. Addition of a heparanase inhibitor Heparastatin (SF4) did not influence MCP-1 production, while both latent and mature forms of heparanase augmented MCP-1 release, suggesting that heparanase catalytic activity was dispensable for MCP-1 production. In contrast, addition of heparin to the medium suppressed MCP-1 release in a dose-dependent manner. Similarly, targeted suppression of Ext1 by RNAi significantly suppressed cell surface expression of heparan sulfate and MCP-1 production in colon 26 cells. Taken together, it is concluded that colon 26 cells transduce the heparanase-mediated signal through heparan sulfate binding. We propose a novel function for heparanase independent of its endoglycosidase activity, namely as a stimulant for chemokine production.
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Affiliation(s)
- Naoki Tsunekawa
- Laboratory of Cancer Biology and Molecular Immunology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Nobuaki Higashi
- Laboratory of Cancer Biology and Molecular Immunology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; One-stop Sharing Facility Center for Future Drug Discoveries, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Yusuke Kogane
- Laboratory of Cancer Biology and Molecular Immunology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Michihiko Waki
- Laboratory of Cancer Biology and Molecular Immunology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroaki Shida
- Laboratory of Cancer Biology and Molecular Immunology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshio Nishimura
- Institute of Microbial Chemistry, Tokyo, Kamiosaki 3-14-23, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Hayamitsu Adachi
- Institute of Microbial Chemistry, Tokyo, Kamiosaki 3-14-23, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Motowo Nakajima
- SBI Pharmaceuticals Co., Ltd., 1-6-1, Roppongi, Minato-ku, Tokyo 106-6019, Japan
| | - Tatsuro Irimura
- Laboratory of Cancer Biology and Molecular Immunology, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Department of Biochemistry and Department of Breast and Endocrine Surgery, Juntendo University School of Medicine, 2-1-1, Hongo, Bunkyo-ku, Tokyo 104-8560, Japan.
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13
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Liang CM, Chen L, Hu H, Ma HY, Gao LL, Qin J, Zhong CP. Chemokines and their receptors play important roles in the development of hepatocellular carcinoma. World J Hepatol 2015; 7:1390-1402. [PMID: 26052384 PMCID: PMC4450202 DOI: 10.4254/wjh.v7.i10.1390] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/08/2014] [Accepted: 04/07/2015] [Indexed: 02/06/2023] Open
Abstract
The chemokine system consists of four different subclasses with over 50 chemokines and 19 receptors. Their functions in the immune system have been well elucidated and research during the last decades unveils their new roles in hepatocellular carcinoma (HCC). The chemokines and their receptors in the microenvironment influence the development of HCC by several aspects including: inflammation, effects on immune cells, angiogenesis, and direct effects on HCC cells. Regarding these aspects, pre-clinical research by targeting the chemokine system has yielded promising data, and these findings bring us new clues in the chemokine-based therapies for HCC.
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14
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Greten TF, Wang XW, Korangy F. Current concepts of immune based treatments for patients with HCC: from basic science to novel treatment approaches. Gut 2015; 64:842-8. [PMID: 25666193 PMCID: PMC6311419 DOI: 10.1136/gutjnl-2014-307990] [Citation(s) in RCA: 140] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 01/12/2015] [Indexed: 02/06/2023]
Abstract
The recent approval of two immune checkpoint inhibitors for the treatment of malignant melanoma has sparked great interest by physicians and basic scientists searching for novel therapeutics for GI cancer. Chronic inflammation is recognised as a major risk factor for the development of hepatocellular carcinoma (HCC) and makes this type of cancer a potentially ideal target for an immune based treatment approach. Further evidence for a critical role of immune responses in patients with HCC is derived from the fact that immune signatures and profiles predict patients' outcome as well as the fact that tumour-induced spontaneous antitumour immunity can be detected. In addition ablative therapies can lead to changes in the number, phenotype and function of different immune cell subsets, which correlate with patients' survival. Various HCC-specific mouse models have been developed, which improve our understanding of hepatocarcinogenesis and tumour-immune cell interactions, and lead to the development of novel immune based treatment approaches, which are currently being evaluated in preclinical and in early clinical settings. Immune checkpoint blockade along with adoptive immune cell therapy and vaccine approaches are currently being evaluated either alone or in combination with other treatments. Here, we provide an overview for the rationale of immunotherapy in HCC, summarise ongoing studies and provide a perspective for immune based approaches in patients with HCC.
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Affiliation(s)
- Tim F Greten
- Gastrointestinal Malignancy Section, Thoracic and Gastrointestinal Oncology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Xin W Wang
- Liver Carcinogenesis Section, Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, USA
| | - Firouzeh Korangy
- Gastrointestinal Malignancy Section, Thoracic and Gastrointestinal Oncology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
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15
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Schmall A, Al-Tamari HM, Herold S, Kampschulte M, Weigert A, Wietelmann A, Vipotnik N, Grimminger F, Seeger W, Pullamsetti SS, Savai R. Macrophage and cancer cell cross-talk via CCR2 and CX3CR1 is a fundamental mechanism driving lung cancer. Am J Respir Crit Care Med 2015; 191:437-47. [PMID: 25536148 DOI: 10.1164/rccm.201406-1137oc] [Citation(s) in RCA: 175] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
RATIONALE Recent studies indicate that tumor-associated macrophages (MΦ) with an M2 phenotype can influence cancer progression and metastasis, but the regulatory pathways remain poorly characterized. OBJECTIVES This study investigated the role of tumor-associated MΦ in lung cancer. METHODS Coculturing of MΦ with mouse Lewis lung carcinoma (LLC1) and 10 different human lung cancer cell lines (adenocarcinoma, squamous cell carcinoma, and large cell carcinoma) caused up-regulation of CCR2/CCL2 and CX3CR1/CX3CL1 in both the cancer cells and the MΦ. MEASUREMENTS AND MAIN RESULTS In the MΦ-tumor cell system, IL-10 drove CCR2 and CX3CR1 up-regulation, whereas CCL1, granulocyte colony-stimulating factor, and MIP1α were required for the up-regulation of CCL2 and CX3CL1. Downstream phenotypic effects included enhanced LLC1 proliferation and migration and MΦ M2 polarization. In vivo, MΦ depletion (clodronate, MΦ Fas-induced apoptosis mice) and genetic ablation of CCR2 and CX3CR1 all inhibited LLC1 tumor growth and metastasis, shifted tumor-associated MΦ toward M1 polarization, suppressed tumor vessel growth, and enhanced survival (metastasis model). Furthermore, mice treated with CCR2 antagonist mimicked genetic ablation of CCR2, showing reduced tumor growth and metastasis. In human lung cancer samples, tumor MΦ infiltration and CCR2 expression correlated with tumor stage and metastasis. CONCLUSIONS Tumor-associated MΦ play a central role in lung cancer growth and metastasis, with bidirectional cross-talk between MΦ and cancer cells via CCR2 and CX3CR1 signaling as a central underlying mechanism. These findings suggest that the therapeutic strategy of blocking CCR2 and CX3CR1 may prove beneficial for halting lung cancer progression.
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Affiliation(s)
- Anja Schmall
- 1 Department of Lung Development and Remodeling, Max Planck Institute for Heart and Lung Research, German Center for Lung Research, Bad Nauheim, Germany
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16
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Wu H, Cabral H, Toh K, Mi P, Chen YC, Matsumoto Y, Yamada N, Liu X, Kinoh H, Miura Y, Kano MR, Nishihara H, Nishiyama N, Kataoka K. Polymeric micelles loaded with platinum anticancer drugs target preangiogenic micrometastatic niches associated with inflammation. J Control Release 2014; 189:1-10. [PMID: 24956488 DOI: 10.1016/j.jconrel.2014.06.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 06/11/2014] [Accepted: 06/12/2014] [Indexed: 12/12/2022]
Abstract
Nanocarriers have been used for specific delivery of therapeutic agents to solid tumors based on the enhanced permeability and retention in cancerous tissues. Despite metastasis is the main reason of cancer-related death and a priority for nanocarrier-based therapies, the targeting ability of nanocarriers to the metastatic disease is poorly understood, especially for preangiogenic micrometastases as nanocarriers usually use the malignant neovasculature for enhancing their accumulation. Thus, herein, we studied the ability of micellar nanocarriers incorporating (1,2-diaminocyclohexane)platinum(II) (DACHPt) for treating liver metastases of bioluminescent murine colon adenocarcinoma C-26, during overt and preangiogenic metastatic stages. After intravenous injection, DACHPt-loaded micelles (DACHPt/m) effectively inhibited the tumor growth in both metastatic tumor models. While the anticancer activity of the micelles against overt metastases was associated with their selective accumulation in cancerous tissues having neovasculature, the ability of DACHPt/m to target preangiogenic metastases was correlated with the inflammatory microenvironment of the niche. This targeting capability of polymeric micelles to preangiogenic metastasis may provide a novel approach for early diagnosis and treatment of metastases.
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Affiliation(s)
- Hailiang Wu
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Horacio Cabral
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Kazuko Toh
- Center for Disease Biology and Integrative Medicine, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Peng Mi
- Polymer Chemistry Division, Chemical Resources Laboratory, Tokyo Institute of Technology, R1-11, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Yi-Chun Chen
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yu Matsumoto
- Center for Disease Biology and Integrative Medicine, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Naoki Yamada
- Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Xueying Liu
- Center for Disease Biology and Integrative Medicine, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hiroaki Kinoh
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yutaka Miura
- Center for Disease Biology and Integrative Medicine, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Mitsunobu R Kano
- Department of Pharmaceutical Biomedicine, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Hiroshi Nishihara
- Laboratory of Translational Pathology, Hokkaido University School of Medicine, North 15, West 7, Kita-ku, Sapporo 060-8638, Japan
| | - Nobuhiro Nishiyama
- Polymer Chemistry Division, Chemical Resources Laboratory, Tokyo Institute of Technology, R1-11, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Kazunori Kataoka
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Center for Disease Biology and Integrative Medicine, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Polymer Chemistry Division, Chemical Resources Laboratory, Tokyo Institute of Technology, R1-11, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan; Department of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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17
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Chemokines in cancer development and progression and their potential as targeting molecules for cancer treatment. Mediators Inflamm 2014; 2014:170381. [PMID: 24966464 PMCID: PMC4055660 DOI: 10.1155/2014/170381] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 03/02/2014] [Indexed: 12/15/2022] Open
Abstract
Chemokines were initially identified as bioactive substances, which control the trafficking of inflammatory cells including granulocytes and monocytes/macrophages. Moreover, chemokines have profound impacts on other types of cells associated with inflammatory responses, such as endothelial cells and fibroblasts. These observations would implicate chemokines as master regulators in various inflammatory responses. Subsequent studies have further revealed that chemokines can regulate the movement of a wide variety of immune cells including lymphocytes, natural killer cells, and dendritic cells in both physiological and pathological conditions. These features endow chemokines with crucial roles in immune responses. Furthermore, increasing evidence points to the vital effects of several chemokines on the proliferative and invasive properties of cancer cells. It is widely acknowledged that cancer develops and progresses to invade and metastasize in continuous interaction with noncancerous cells present in cancer tissues, such as macrophages, lymphocytes, fibroblasts, and endothelial cells. The capacity of chemokines to regulate both cancerous and noncancerous cells highlights their crucial roles in cancer development and progression. Here, we will discuss the roles of chemokines in carcinogenesis and the possibility of chemokine targeting therapy for the treatment of cancer.
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Shi M, Chen MS, Sekar K, Tan CK, Ooi LL, Hui KM. A blood-based three-gene signature for the non-invasive detection of early human hepatocellular carcinoma. Eur J Cancer 2013; 50:928-36. [PMID: 24332572 DOI: 10.1016/j.ejca.2013.11.026] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 11/21/2013] [Accepted: 11/24/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND Identifying early stages of disease in high-risk individuals for the development of hepatocellular carcinoma (HCC) would greatly improve the clinical outcomes of these individuals. The aim of this study was to develop a blood-based gene set that could identify early-stage HCC. METHODS Comprehensive gene expression profiling of purified RNA of peripheral blood mononuclear cells (PBMC) was performed using microarrays. Gene signatures were developed through bioinformatics-driven approaches and their diagnostic value was evaluated by custom-designed, quantitative, multiplex polymerase chain reaction (PCR) assays. RESULTS Bioinformatics-driven analysis of microarray data derived from PBMC RNA samples of patients with HCC (N=10), pancreatic cancer (N=3), gastric cancer (N=3) and 10 normal individuals identified six genes that were differentially expressed in HCC. Subsequent multiplex-PCR validation and univariate analyses performed with an independent cohort of 114 HCC patients, 48 normal individuals and 14 patients with chronic hepatitis B (CHB) validated that three genes, namely Chemokine (C-X-C motif) receptor 2 (CXCR2), C-C chemokine receptor type 2 (CCR2) and E1A-Binding Protein P400 (EP400), were able to identify HCC individually with accuracies of 82.4%, 78.4% and 65%, respectively. In combination, these three genes gave an area under the curve (AUC) of 0.96 (95% confidence interval (CI), 0.93-0.99) using multivariate logistic regression and yielded a sensitivity of 93% and a specificity of 89%. When these three genes were used in combination with alpha-fetoprotein (AFP) to predict HCC, the accuracy of predicting HCC improved slightly with an AUC of 0.99 (95% CI, 0.98-1.0), sensitivity of 93% and specificity of 95%. CONCLUSIONS CXCR2, CCR2 and EP400 can provide a promising non-invasive multiplex PCR diagnostic assay to monitor high-risk individuals for the development of HCC.
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Affiliation(s)
- Ming Shi
- Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, PR China
| | - Min-Shan Chen
- Department of Hepatobiliary Oncology, Sun Yat-Sen University Cancer Center, Guangzhou 510060, PR China
| | - Karthik Sekar
- Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, Singapore 169610, Singapore
| | - Chee-Kiat Tan
- Department of Gastroenterology and Hepatology, Singapore General Hospital, Singapore 169608, Singapore
| | - London Lucien Ooi
- Division of Surgical Oncology, National Cancer Centre, Singapore 169610, Singapore
| | - Kam M Hui
- Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, Singapore 169610, Singapore; Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; Institute of Molecular and Cell Biology, A(∗)STAR, Biopolis Drive Proteos, Singapore 138673, Singapore; Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore 169857, Singapore.
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Van den Eynden GG, Majeed AW, Illemann M, Vermeulen PB, Bird NC, Høyer-Hansen G, Eefsen RL, Reynolds AR, Brodt P. The multifaceted role of the microenvironment in liver metastasis: biology and clinical implications. Cancer Res 2013; 73:2031-43. [PMID: 23536564 DOI: 10.1158/0008-5472.can-12-3931] [Citation(s) in RCA: 151] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The liver is host to many metastatic cancers, particularly colorectal cancer, for which the last 2 decades have seen major advances in diagnosis and treatment. The liver is a vital organ, and the extent of its involvement with metastatic disease is a major determinant of survival. Metastatic cells arriving in the liver via the bloodstream encounter the microenvironment of the hepatic sinusoid. The interactions of the tumor cells with hepatic sinusoidal and extrasinusoidal cells (endothelial, Kupffer, stellate, and inflammatory cells) determine their fate. The sinusoidal cells can have a dual role, sometimes fatal to the tumor cells but also facilitatory to their survival and growth. Adhesion molecules participate in these interactions and may affect their outcome. Bone marrow-derived cells and chemokines also play a part in the early battle for survival of the metastases. Once the tumor cells have arrested and survived the initial onslaught, tumors can grow within the liver in 3 distinct patterns, reflecting differing host responses, mechanisms of vascularization, and proteolytic activity. This review aims to present current knowledge of the interactions between the host liver cells and the invading metastases that has implications for the clinical course of the disease and the response to treatment.
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Abstract
Annually, hepatocellular carcinoma is diagnosed in approximately a half-million people worldwide. Based on the association of alcohol with cancer, a International Agency for Research on Cancer working group recently deemed alcoholic beverages "carcinogenic to humans," causally related to occurrence of malignant tumors of the oral cavity, pharynx, larynx, esophagus, liver, colorectum, and female breast. Alcohol metabolism in the liver leads to reactive oxygen species production, induction of activity of cytochrome P450s, and reduction of antioxidants. This review analyzes the epidemiology and pathogenesis of alcohol in hepatocellular cancer.
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Affiliation(s)
- Priya Grewal
- Division of Liver Diseases, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, NY 10029, USA.
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21
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Pemu P, Anderson L, Gee BE, Ofili EO, Ghosh S. Early alterations of the immune transcriptome in cultured progenitor cells from obese African-American women. Obesity (Silver Spring) 2012; 20:1481-90. [PMID: 22262158 PMCID: PMC3611330 DOI: 10.1038/oby.2011.370] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Progenitor cells (PCs) are key components of vasculogenic remodeling and hematopoietic development. Decreases in the number and function of angiogenic progenitors have been observed in coronary artery disease, hypertension, and diabetic vasculopathy. Several recent studies have also demonstrated a close relationship between increased visceral fat and cardiovascular disease, implying an association between obesity and vascular dysfunction. However, very little is known about the role of PCs in obesity. We generated whole genome expression profiles of cultured PCs from 18 obese and 6 lean African-American women on Agilent microarrays and analyzed the data through bioinformatic pathway analysis using multiple databases and analytic tools. False-discovery rates (FDR) were calculated to assess statistical significance while controlling for multiple testing. We identified 1,145 upregulated and 2,257 downregulated genes associated with obesity (1.5-fold or greater absolute fold-change). Pathway analysis further identified a statistically significant downregulation of immune-response pathways in the obese subjects, including T-cell receptor signaling, natural killer cell signaling, and chemokine-signaling pathways (FDR <5%). Chemokine gene-expression patterns were consistent with an angiogenic-angiostatic imbalance and a downregulation of CXCR3 receptor-mediated signaling in the PCs from obese subjects. Overall, these findings reveal a novel transcriptional signature in cultured PCs from obese African-American women and further suggest that obesity-associated immune-compromise may originate much earlier in cellular development than currently appreciated. Clinically, this may translate into a lengthier period of immune dysregulation in obese subjects exposing them to greater risks of infection and other morbidities.
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Affiliation(s)
- Priscilla Pemu
- Clinical Research Center, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Leonard Anderson
- Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Beatrice E. Gee
- Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Elizabeth O. Ofili
- Clinical Research Center, Morehouse School of Medicine, Atlanta, Georgia, USA
| | - Sujoy Ghosh
- Biomedical Biotechnology Research Institute, North Carolina Central University, Durham, North Carolina, USA
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Mukaida N, Baba T. Chemokines in tumor development and progression. Exp Cell Res 2011; 318:95-102. [PMID: 22036649 DOI: 10.1016/j.yexcr.2011.10.012] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 10/14/2011] [Accepted: 10/14/2011] [Indexed: 12/17/2022]
Abstract
Chemokines were originally identified as mediators of the inflammatory process and regulators of leukocyte trafficking. Subsequent studies revealed their essential roles in leukocyte physiology and pathology. Moreover, chemokines have profound effects on other types of cells associated with the inflammatory response, such as endothelial cells and fibroblasts. Thus, chemokines are crucial for cancer-related inflammation, which can promote tumor development and progression. Increasing evidence points to the vital effects of several chemokines on the proliferative and invasive properties of tumor cells. The wide range of activities of chemokines in tumorigenesis highlights their roles in tumor development and progression.
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Affiliation(s)
- Naofumi Mukaida
- Division of Molecular Bioregulation, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
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Dagouassat M, Suffee N, Hlawaty H, Haddad O, Charni F, Laguillier C, Vassy R, Martin L, Schischmanoff PO, Gattegno L, Oudar O, Sutton A, Charnaux N. Monocyte chemoattractant protein-1 (MCP-1)/CCL2 secreted by hepatic myofibroblasts promotes migration and invasion of human hepatoma cells. Int J Cancer 2010; 126:1095-108. [PMID: 19642141 DOI: 10.1002/ijc.24800] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The aim of our study was to investigate whether myofibroblasts and the chemokine monocyte chemoattractant protein-1 (MCP-1)/CCL2 may play a role in hepatocellular carcinoma progression. We observed that hepatic myofibroblast LI90 cells express MCP-1/CCL2 mRNA and secrete this chemokine. Moreover, myofibroblast LI90 cell-conditioned medium (LI90-CM) induces human hepatoma Huh7 cell migration and invasion. These effects are strongly reduced when a MCP-1/CCL2-depleted LI90-CM was used. We showed that MCP-1/CCL2 induces Huh7 cell migration and invasion through its G-protein-coupled receptor CCR2 and, to a lesser extent, through CCR1 only at high MCP-1/CCL2 concentrations. MCP-1/CCL2's chemotactic activities rely on tyrosine phosphorylation of focal adhesion components and depend on matrix metalloproteinase (MMP)-2 and MMP-9. Furthermore, we observed that Huh7 cell migration and invasion induced by the chemokine are strongly inhibited by heparin, by beta-D-xyloside treatment of cells and by anti-syndecan-1 and -4 antibodies. Finally, we developed a 3-dimensional coculture model of myofibroblast LI90 and Huh7 cells and demonstrated that MCP-1/CCL2 and its membrane partners, CCR1 and CCR2, may be involved in the formation of mixed hepatoma-myofibroblast spheroids. In conclusion, our data show that human liver myofibroblasts act on hepatoma cells in a paracrine manner to increase their invasiveness and suggest that myofibroblast-derived MCP-1/CCL2 could be involved in the pathogenesis of hepatocellular carcinoma.
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Affiliation(s)
- Maylis Dagouassat
- INSERM U698, Bioingénierie cardiovasculaire, Université Paris 13, Bobigny, France
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Zhang J, Patel L, Pienta KJ. Targeting chemokine (C-C motif) ligand 2 (CCL2) as an example of translation of cancer molecular biology to the clinic. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2010; 95:31-53. [PMID: 21075328 DOI: 10.1016/b978-0-12-385071-3.00003-4] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Chemokines are a family of small and secreted proteins that play pleiotropic roles in inflammation-related pathological diseases, including cancer. Among the identified 50 human chemokines, chemokine (C-C motif) ligand 2 (CCL2) is of particular importance in cancer development since it serves as one of the key mediators of interactions between tumor and host cells. CCL2 is produced by cancer cells and multiple different host cells within the tumor microenvironment. CCL2 mediates tumorigenesis in many different cancer types. For example, CCL2 has been reported to promote prostate cancer cell proliferation, migration, invasion, and survival, via binding to its functional receptor CCR2. Furthermore, CCL2 induces the recruitment of macrophages and induces angiogenesis and matrix remodeling. Targeting CCL2 has been demonstrated as an effective therapeutic approach in preclinical prostate cancer models, and currently, neutralizing monoclonal antibody against CCL2 has entered into clinical trials in prostate cancer. In this chapter, targeting CCL2 in prostate cancer will be used as an example to show translation of laboratory findings from cancer molecular biology to the clinic.
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Affiliation(s)
- Jian Zhang
- Department of Medicine, Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, Michigan, USA
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25
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Popivanova BK, Kostadinova FI, Furuichi K, Shamekh MM, Kondo T, Wada T, Egashira K, Mukaida N. Blockade of a chemokine, CCL2, reduces chronic colitis-associated carcinogenesis in mice. Cancer Res 2009; 69:7884-92. [PMID: 19773434 DOI: 10.1158/0008-5472.can-09-1451] [Citation(s) in RCA: 149] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Accumulating evidence indicates the crucial contribution of chronic inflammation to various types of carcinogenesis, including colon carcinoma associated with ulcerative colitis and asbestosis-induced malignant mesothelioma. Ulcerative colitis-associated colon carcinogenesis can be recapitulated in mice by azoxymethane administration followed by repetitive dextran sulfate sodium ingestion. In the course of this carcinogenesis process, the expression of a macrophage-tropic chemokine, CCL2, was enhanced together with intracolonic massive infiltration of macrophages, which were a major source of cyclooxygenase (COX)-2, a crucial mediator of colon carcinogenesis. Mice deficient in CCL2-specific receptor, CCR2, exhibited less macrophage infiltration and lower tumor numbers with attenuated COX-2 expression. Moreover, CCL2 antagonists decreased intracolonic macrophage infiltration and COX-2 expression, attenuated neovascularization, and eventually reduced the numbers and size of colon tumors, even when given after multiple colon tumors have developed. These observations identify CCL2 as a crucial mediator of the initiation and progression of chronic colitis-associated colon carcinogenesis and suggest that targeting CCL2 may be useful in treating colon cancers, particularly those associated with chronic inflammation.
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Hu H, Sun L, Guo C, Liu Q, Zhou Z, Peng L, Pan J, Yu L, Lou J, Yang Z, Zhao P, Ran Y. Tumor cell-microenvironment interaction models coupled with clinical validation reveal CCL2 and SNCG as two predictors of colorectal cancer hepatic metastasis. Clin Cancer Res 2009; 15:5485-93. [PMID: 19706805 DOI: 10.1158/1078-0432.ccr-08-2491] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
PURPOSE This study aimed to identify novel biological markers for the prediction of colorectal cancer liver metastasis. EXPERIMENTAL DESIGN We established two models that mimicked the interactions between colorectal tumor cells and the liver microenvironment. From these models we established subcell lines that had an enhanced ability to metastasize to the liver. Genes that related to hepatic metastasis were screened by microarray. The candidate markers were tested by immunohistochemistry, and their predictive accuracy was assessed by the cross-validation method and an independent test set. RESULTS Highly metastatic colon cancer cell sublines SW1116p21 and SW1116v3 were established from the tumor cell-microenvironment interaction models. Seven of the up-regulated genes in the sublines were selected as candidate markers for predicting metastatic potential. A total of 245 colorectal cancer samples were divided into a training set containing 117 cases and a test set containing 128 cases. In the training set, immunohistochemical analysis showed CCL2 and SNCG expression was higher in the hepatic metastasis group than in the nonmetastasis group, and was correlated with poor survival. Logistic regression analysis revealed that CCL2 and SNCG levels in primary tumors, serum carcinoembryonic antigen level, and lymph node metastasis status were the only significant (P < 0.05) parameters for detecting liver metastasis. In leave-one-out-cross-validation, the two markers, when combined with clinicopathologic features, resulted in 90.5% sensitivity and 90.7% specificity for hepatic metastasis detection. In an independent test set, the combination achieved 87.5% sensitivity and 82% specificity for predicting the future hepatic metastasis of colorectal cancer. CONCLUSION Our results suggest that these models are able to mimic the interactions between colorectal cancer cells and the liver microenvironment, and may represent a promising strategy to identify metastasis-related genes. CCL2 and SNCG, combined with clinicopathologic features, may be used as accurate predictors of liver metastasis in colorectal cancer.
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Affiliation(s)
- Hai Hu
- State Key Laboratory of Molecular Oncology, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, People's Republic of China
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Mitchell C, Couton D, Couty JP, Anson M, Crain AM, Bizet V, Rénia L, Pol S, Mallet V, Gilgenkrantz H. Dual role of CCR2 in the constitution and the resolution of liver fibrosis in mice. THE AMERICAN JOURNAL OF PATHOLOGY 2009; 174:1766-75. [PMID: 19359521 DOI: 10.2353/ajpath.2009.080632] [Citation(s) in RCA: 143] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inflammation has been shown to induce the progression of fibrosis in response to liver injury. Among inflammatory cells, macrophages and lymphocytes play major roles in both the constitution and resolution of liver fibrosis. The chemokine receptor CCR2 is involved in the recruitment of monocytes to injury sites, and it is known to be induced during the progression of fibrosis in humans. However, its specific role during this process has not yet been unveiled. We first demonstrated that, compared with wild-type mice, CCR2 knockout animals presented a delay in liver injury after acute CCl(4) injection, accompanied by a reduction in infiltrating macrophage populations. We then induced fibrosis using repeated injections of CCl(4) and observed a significantly lower level of fibrotic scars at the peak of fibrosis in mutant animals compared with control mice. This diminished fibrosis was associated with a reduction in F4/80(+)CD11b(+) and CD11c(+) populations at the sites of injury. Subsequent analysis of the kinetics of the resolution of fibrosis showed that fibrosis rapidly regressed in wild-type, but not in CCR2(-/-) mice. The persistence of hepatic injury in mutant animals was correlated with sustained tissue inhibitor of metalloproteinase-1 mRNA expression levels and a reduction in matrix metalloproteinase-2 and matrix metalloproteinase-13 expression levels. In conclusion, these findings underline the role of the CCR2 signaling pathway in both the constitution and resolution of liver fibrotic scars.
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Affiliation(s)
- Claudia Mitchell
- Institut Cochin, Université Paris Descartes, Centre National de Researche Scientifique (UMR 8104), Paris, France
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Wu Y, Li YY, Matsushima K, Baba T, Mukaida N. CCL3-CCR5 axis regulates intratumoral accumulation of leukocytes and fibroblasts and promotes angiogenesis in murine lung metastasis process. THE JOURNAL OF IMMUNOLOGY 2009; 181:6384-93. [PMID: 18941229 DOI: 10.4049/jimmunol.181.9.6384] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Metastasis proceeds through interaction between cancer cells and resident cells such as leukocytes and fibroblasts. An i.v. injection of a mouse renal cell carcinoma, Renca, into wild-type mice resulted in multiple metastasis foci in lungs and was associated with intratumoral accumulation of macrophages, granulocytes, and fibroblasts. A chemokine, CCL3, was detected in infiltrating cells and, to a lesser degree, tumor cells, together with an infiltration of leukocytes expressing CCR5, a specific receptor for CCL3. A deficiency of the CCL3 or CCR5 gene markedly reduced the number of metastasis foci in the lung, and the analysis using bone marrow chimeric mice revealed that both bone marrow- and non-bone marrow-derived cells contributed to metastasis formation. CCL3- and CCR5-deficient mice exhibited a reduction in intratumoral accumulation of macrophages, granulocytes, and fibroblasts. Moreover, intratumoral neovascularization, an indispensable process for metastasis, was attenuated in these gene-deficient mice. Intrapulmonary expression of matrix metalloproteinase (MMP)-9 and hepatocyte growth factor (HGF) was enhanced in wild-type mice, and the increases were markedly diminished in CCL3- and CCR5-deficient mice. Furthermore, MMP-9 protein was detected in macrophages and granulocytes, the cells that also express CCR5 and in vitro stimulation by CCL3-induced macrophages to express MMP-9. Intratumoral fibroblasts expressed CCR5 and HGF protein. In vitro CCL3 stimulated fibroblasts to express HGF. Collectively, the CCL3-CCR5 axis appears to regulate intratumoral trafficking of leukocytes and fibroblasts, as well as MMP-9 and HGF expression, and as a consequence to accelerate neovascularization and subsequent metastasis formation.
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Affiliation(s)
- Yu Wu
- Division of Molecular Bioregulation, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan
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Sun D, Martinez CO, Ochoa O, Ruiz-Willhite L, Bonilla JR, Centonze VE, Waite LL, Michalek JE, McManus LM, Shireman PK. Bone marrow-derived cell regulation of skeletal muscle regeneration. FASEB J 2008; 23:382-95. [PMID: 18827026 PMCID: PMC2630778 DOI: 10.1096/fj.07-095901] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Limb regeneration requires the coordination of multiple stem cell populations to recapitulate the process of tissue formation. Therefore, bone marrow (BM) -derived cell regulation of skeletal muscle regeneration was examined in mice lacking the CC chemokine receptor 2 (CCR2). Myofiber size, numbers of myogenic progenitor cells (MPCs), and recruitment of BM-derived cells and macrophages were assessed after cardiotoxin-induced injury of chimeric mice produced by transplanting BM from wild-type (WT) or CCR2−/− mice into irradiated WT or CCR2−/− host mice. Regardless of the host genotype, muscle regeneration and recruitment of BM-derived cells and macrophages were similar in mice replenished with WT BM, whereas BM-derived cells and macrophage accumulation were decreased and muscle regeneration was impaired in all animals receiving CCR2−/− BM. Furthermore, numbers of MPCs (CD34+/Sca-1−/CD45− cells) were significantly increased in mice receiving CCR2−/− BM despite the decreased size of regenerated myofibers. Thus, the expression of CCR2 on BM-derived cells regulated macrophage recruitment into injured muscle, numbers of MPC, and the extent of regenerated myofiber size, all of which were independent of CCR2 expression on host-derived cells. Future studies in regenerative medicine must include consideration of the role of BM-derived cells, possibly macrophages, in CCR2-dependent events that regulate effective skeletal muscle regeneration.—Sun, D., Martinez, C. O., Ochoa, O., Ruiz-Willhite, L., Bonilla, J. R., Centonze, V. E., Waite, L. L., Michalek, J. E., McManus, L. M., Shireman, P. K. Bone marrow-derived cell regulation of skeletal muscle regeneration.
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Affiliation(s)
- Dongxu Sun
- Department of Surgery, University of Texas Health Science Center, San Antonio, Texas, USA
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31
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Lu P, Li L, Kuno K, Wu Y, Baba T, Li YY, Zhang X, Mukaida N. Protective roles of the fractalkine/CX3CL1-CX3CR1 interactions in alkali-induced corneal neovascularization through enhanced antiangiogenic factor expression. THE JOURNAL OF IMMUNOLOGY 2008; 180:4283-91. [PMID: 18322241 DOI: 10.4049/jimmunol.180.6.4283] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Macrophages accumulate during the course of corneal neovascularization, but its mechanisms and roles still remain elusive. To address these points, we herein examined corneal neovascularization after alkali injury in mice deficient in fractalkine receptor/CX3CR1, which is normally expressed by macrophages. After alkali injury, the mRNA expression of CX3CR1 was augmented along with accumulation of F4/80-positive macrophages and Gr-1-positive neutrophils in the corneas. Compared with wild-type mice, CX3CR1-deficient mice exhibited enhanced corneal neovascularization 2 wk after injury, as evidenced by enlarged CD31-positive areas. Concomitantly, the accumulation of F4/80-positive macrophages, but not Gr-1-positive neutrophils, was markedly attenuated in CX3CR1-deficient mice compared with wild-type mice. The intraocular mRNA expression of vascular endothelial growth factor (VEGF) was enhanced to similar extents in wild-type and CX3CR1-deifient mice after the injury. However, the mRNA expression of antiangiogenic factors, thrombospondin (TSP) 1, TSP-2, and a disintegrin and metalloprotease with thrombospondin (ADAMTS) 1, was enhanced to a greater extent in wild-type than CX3CR1-deificient mice. A double-color immunofluorescence analysis demonstrated that F4/80-positive cells also expressed CX3CR1 and ADAMTS-1 and that TSP-1 and ADAMTS-1 were detected in CX3CR1-positive cells. CX3CL1 enhanced TSP-1 and ADAMTS-1, but not VEGF, expression by peritoneal macrophages. Moreover, topical application of CX3CL1 inhibited corneal neovascularization at 2 wk, along with enhanced intraocular expression of TSP-1 and ADAMTS-1 but not VEGF. Thus, these observations indicate that accumulation of CX3CR1-positive macrophages intraocularly can dampen alkali-induced corneal neovascularization by producing antiangiogenic factors such as TSP-1 and ADAMTS-1 and suggest the potential therapeutic efficacy of using CX3CL1 against alkali-induced corneal neovascularization.
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Affiliation(s)
- Peirong Lu
- Clinical Immunology Key Laboratory of Jiangsu Province, First Affiliated Hospital of Suzhou University, Suzhou, China
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32
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Ochoa O, Sun D, Reyes-Reyna SM, Waite LL, Michalek JE, McManus LM, Shireman PK. Delayed angiogenesis and VEGF production in CCR2-/- mice during impaired skeletal muscle regeneration. Am J Physiol Regul Integr Comp Physiol 2007; 293:R651-61. [PMID: 17522124 DOI: 10.1152/ajpregu.00069.2007] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The regulation of vascular endothelial growth factor (VEGF) levels and angiogenic events during skeletal muscle regeneration remains largely unknown. This study examined angiogenesis, VEGF levels, and muscle regeneration after cardiotoxin (CT)-induced injury in mice lacking the CC chemokine receptor 2 (CCR2). Muscle regeneration was significantly decreased in CCR2-/- mice as was the early accumulation of macrophages after injury. In both mouse strains, tissue VEGF was similar at baseline (no injections) and significantly decreased at day 3 post-CT. Tissue VEGF in wild-type (WT) mice was restored within 7 days postinjury but remained significantly reduced in CCR2-/- mice until day 21. Capillary density (capillaries/mm(2)) within regenerating muscle was maximal in WT mice at day 7 and double that of baseline muscle. In comparison, maximal capillary density in CCR2-/- mice occurred at 21 days postinjury. Maximal capillary density developed concurrent with the restoration of tissue VEGF in both strains. A highly significant, inverse relationship existed between the size of regenerated muscle fibers and capillaries per square millimeter. Although this relationship was comparable in WT and CCR2-/- animals, there was a significant decrease in the magnitude of this response in the absence of CCR2, reflecting the observation that regenerated muscle fiber size in CCR2-/- mice was only 50% of baseline at 42 days postinjury, whereas WT mice had attained baseline fiber size by day 21. Thus CCR2-dependent events in injured skeletal muscle, including impaired macrophage recruitment, contribute to restoration of tissue VEGF levels and the dynamic processes of capillary formation and muscle regeneration.
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MESH Headings
- Adipose Tissue
- Animals
- Capillaries/physiology
- Chemokine CCL2/metabolism
- Cobra Cardiotoxin Proteins
- Female
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Mutant Strains
- Muscle Fibers, Skeletal/pathology
- Muscle Proteins/physiology
- Muscle, Skeletal/blood supply
- Muscle, Skeletal/injuries
- Muscle, Skeletal/pathology
- Muscle, Skeletal/physiology
- Myositis/chemically induced
- Myositis/pathology
- Myositis/physiopathology
- Neovascularization, Physiologic/physiology
- Organ Size
- Receptors, CCR2
- Receptors, Chemokine/genetics
- Receptors, Chemokine/metabolism
- Regeneration/physiology
- Vascular Endothelial Growth Factor A/metabolism
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Affiliation(s)
- Oscar Ochoa
- Department of Surgery, University of Texas Health Science Center, San Antonio, TX, USA
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Abstract
The paradigm of cancer development and metastasis is a comprehensive, complex series of events that ultimately reflects a coordinated interaction between the tumor cell and the microenvironment within which the tumor cell resides. Despite the realization that this relationship has changed the current paradigm of cancer research, the struggle continues to more completely understand the pathogenesis of the disease and the ability to appropriately identify and design novel targets for therapy. A particular area of research that has added a significant understanding to cancer metastasis is the role of chemokines and chemokine receptors. Here we review the current concepts of CCL2 (monocyte chemoattractant protein 1) and its role in tumor metastasis with particular interest to its role in the development of bone metastases.
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Affiliation(s)
- Matt J Craig
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
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Huang B, Lei Z, Zhao J, Gong W, Liu J, Chen Z, Liu Y, Li D, Yuan Y, Zhang GM, Feng ZH. CCL2/CCR2 pathway mediates recruitment of myeloid suppressor cells to cancers. Cancer Lett 2007; 252:86-92. [PMID: 17257744 DOI: 10.1016/j.canlet.2006.12.012] [Citation(s) in RCA: 257] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2006] [Revised: 12/09/2006] [Accepted: 12/12/2006] [Indexed: 12/16/2022]
Abstract
In addition to direct effect on tumor cells, the tumor-promoting activity of CCL2 has been ascribed to its role in chemoattracting tumor-associated macrophages. However it is unclear whether CCL2 also attracts other immune regulatory cells during tumor development. In this study, we confirmed the ubiquitous expression of CCR2 in myeloid suppressor cells (MSCs), a main inducer for tumor immune evasion, and identified that cancer patient-derived CCL2 mediated the migration of MSCs to tumors in vitro, which could be interdicted by antibodies neutralizing CCL2 or blocking CCR2. In mouse tumor model, the adoptively transferred CCR2(-/-) MSCs could not migrate to either tumor or spleen as efficiently as WT MSCs. The absence of CCL2/CCR2 signaling hindered both MSC migration and MSC-promoted tumor growth. Our data provide evidence that CCL2/CCR2 pathway plays a pivotal role in MSC migration, which is a novel mechanism through which CCL2 promotes tumor growth.
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Affiliation(s)
- Bo Huang
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, People's Republic of China
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Abstract
PURPOSE To describe Descemet membrane endothelial keratoplasty (DMEK) with organ cultured Descemet membrane (DM) in a human cadaver eye model and a patient with Fuchs endothelial dystrophy. METHODS In 10 human cadaver eyes and 1 patient eye, a 3.5-mm clear corneal tunnel incision was made. The anterior chamber was filled with air, and the DM was stripped off from the posterior stroma. From organ-cultured donor corneo-scleral rims, 9.0-mm-diameter "DM rolls" were harvested. Each donor DM roll was inserted into a recipient anterior chamber, positioned onto the posterior stroma, and kept in position by completely filling the anterior chamber with air for 30 minutes. RESULTS In all recipient eyes, the donor DM maintained its position after a 30-minute air-fill of the anterior chamber followed by an air-liquid exchange. In the patient's eye, 1 week after transplantation, best-corrected visual acuity was 1.0 (20/20) with the patient's preoperative refraction, and the endothelial cell density averaged 2350 cells/mm. CONCLUSION DMEK may provide quick visual rehabilitation in the treatment of corneal endothelial disorders by transplantation of an organ-cultured DM transplanted through a clear corneal tunnel incision. DMEK may be a highly accessible procedure to corneal surgeons, because donor DM sheets can be prepared from preserved corneo-scleral rims.
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Affiliation(s)
- Peirong Lu
- Department of Ophthalmology, First Affiliated Hospital of Suzhou University, Suzhou, China.
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