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Cai F, Wang P, Yuan M, Chen W, Liu Y. Hypoxic microenvironment promotes diabetic wound healing by polarizing macrophages to the M2 phenotype in vivo. J Mol Histol 2024; 55:967-976. [PMID: 39122894 DOI: 10.1007/s10735-024-10244-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 08/06/2024] [Indexed: 08/12/2024]
Abstract
BACKGROUND In diabetic wounds, M2 polarization of macrophages regulates the transition from an inflammatory phase to a proliferative phase. Prior investigations have demonstrated the potential of deferoxamine (DFO) in creating a localized hypoxic microenvironment, which could stimulate angiogenesis by promoting vascular endothelial growth factor (VEGF) secretion in diabetic wound healing. Nevertheless, there is still no clear information on whether this chemically induced hypoxic microenvironment modulates macrophage polarization to promote diabetic wound healing. METHODS The 18 diabetic mice were randomly divided into three groups: a control group (n = 6), a 100µM DFO group (n = 6), and a 200µM DFO group (n = 6). Subsequently, a full-thickness wound with a diameter of 1.00 cm was created on the dorsal region of the diabetic mice. Observe wound closure regularly during treatment. At the end of the observation, tissue specimens were collected for a series of experiments and analyses, including hematoxylin and eosin (H&E), Masson, immunofluorescent, and immunohistochemical staining. The role and mechanism of DFO in regulating macrophage polarization were studied using RAW264.7 cells. RESULTS In comparison to the control group, the administration of DFO notably facilitates wound healing in diabetic mice. In diabetic wounds, DFO increases blood supply by upregulating VEGF, which promotes angiogenesis. Additionally, The expression of HSP70 and CD206 were also upregulated by DFO in both vivo and in vitro, while iNOS expression was downregulated. Additionally, knk437 inhibited the expression of HSP70 in RAW264.7 cells, resulting in a reduction of M2 polarization and an increase in M1 polarization. CONCLUSION The induction of a hypoxic microenvironment by DFO has been found to exert a substantial influence on the process of diabetic wound healing. DFO treatment enhances the capacity of diabetic wounds to stimulate angiogenesis and modulate macrophage polarization that may be associated with HSP70 expression, thereby expediting the transition of these wounds from an inflammatory to a proliferative state.
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Affiliation(s)
- Feiyu Cai
- Department of Burns and Plastic Surgery & Wound Repair Surgery, the Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Peng Wang
- Department of Burns and skin surgery, The First Affiliated Hospital of Air Force Military Medical University, Shanxi, Xi'an, China
| | - Mengling Yuan
- Department of Burns and Plastic Surgery & Wound Repair Surgery, the Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Wenjiao Chen
- Department of Burns and Plastic Surgery & Wound Repair Surgery, the Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Yi Liu
- Department of Burns and Plastic Surgery & Wound Repair Surgery, the Lanzhou University Second Hospital, Lanzhou, Gansu, China.
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Torres GM, Yang H, Park C, Spezza PA, Khatwani N, Bhandari R, Liby KT, Pioli PA. T Cells and CDDO-Me Attenuate Immunosuppressive Activation of Human Melanoma-Conditioned Macrophages. Front Immunol 2022; 13:768753. [PMID: 35265066 PMCID: PMC8898828 DOI: 10.3389/fimmu.2022.768753] [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: 09/01/2021] [Accepted: 01/19/2022] [Indexed: 11/18/2022] Open
Abstract
Melanoma tumors are highly immunogenic, making them an attractive target for immunotherapy. However, many patients do not mount robust clinical responses to targeted therapies, which is attributable, at least in part, to suppression of immune responses by tumor-associated macrophages (TAMs) in the tumor microenvironment (TME). Using a human in vitro tri-culture system of macrophages with activated autologous T cells and BRAFV600E mutant melanoma cells, we now show that activated T cells and the synthetic triterpenoid the methyl ester of 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid (CDDO-Me) attenuate immune suppression. Surface expression of CD206, CD16 and CD163 on melanoma-conditioned macrophages was inhibited by the addition of T cells, suggesting relief of immuno-suppressive macrophage activation. We also demonstrated that addition of CDDO-Me to tri-cultures enhanced T cell-mediated reductions in CCL2, VEGF and IL-6 production in a contact-independent manner. Because these results suggest CDDO-Me alters melanoma-conditioned macrophage activation, we interrogated CDDO-Me-mediated changes in macrophage signaling pathway activation. Our results indicated that CDDO-Me inhibited phosphorylation of STAT3, a known inducer of TAM activation. Collectively, our studies suggest that activated T cells and CDDO-Me synergistically relieve immune suppression in melanoma cultures and implicate the potential utility of CDDO-Me in the treatment of melanoma.
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Affiliation(s)
- Gretel M Torres
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Heetaek Yang
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Chanhyuk Park
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Paul A Spezza
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Nikhil Khatwani
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Rajan Bhandari
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
| | - Karen T Liby
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, United States
| | - Patricia A Pioli
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, NH, United States
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3
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Wan X, Zhu Y, Zhang L, Hou W. Gefitinib inhibits malignant melanoma cells through the VEGF/AKT signaling pathway. Mol Med Rep 2018; 17:7351-7355. [PMID: 29568946 DOI: 10.3892/mmr.2018.8728] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 06/13/2017] [Indexed: 11/06/2022] Open
Abstract
Malignant melanoma (MM) is caused by melanophore cancerization in tissue pigmentation regions, leading to skin, mucous membrane, eye and central nervous system carcinogenesis. The incidence of MM has increased in previous years, and it has become the primary cause of skin cancer‑associated mortality in developed countries. MM is characterized as highly malignant and readily metastasized, and has a poor prognosis. Targeting angiogenesis is an important method for MM treatment. As an important proangiogenic factor in tumor growth and metastasis, vascular endothelial growth factor (VEGF) can promote neovascularization and increase vascular permeability. Gefitinib is a novel drug targeting VEGF. The effect and mechanism of gefitinib on MM remain to be elucidated, and were investigated in the present study. The A375 MM cell line was used in the present study; it was cultured in vitro and divided into gefitinib groups (5 and 10 µM) and a control group. Cell proliferation was measured using an MTT assay and the activity of caspase‑3 was assessed using a kit. Cell invasive ability was determined using a Transwell chamber. The mRNA and protein expression levels of VEGF and AKT were detected using reverse transcription‑quantitative polymerase chain reaction and western blot analyses. Gefitinib significantly inhibited MM cell proliferation, enhanced the activity of caspase 3 and suppressed tumor cell invasion (P<0.05). In addition, gefitinib significantly downregulated the mRNA and protein expression levels of VEGF and AKT, and these changes were dose‑dependent (P<0.05). Taken together, gefitinib suppressed MM cell proliferation and invasion in vitro by regulating the VEGF/AKT signaling pathway.
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Affiliation(s)
- Xuefeng Wan
- Department of Dermatology and Venereology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Yalin Zhu
- Department of Dermatology and Venereology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Lijuan Zhang
- Department of Dermatology and Venereology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
| | - Wei Hou
- Department of Dermatology and Venereology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, P.R. China
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Wang X, Xu W, Wang S, Yu F, Feng J, Wang X, Zhang L, Lin J. Transdifferentiation of human MNNG/HOS osteosarcoma cells into vascular endothelial cells in vitro and in vivo. Oncol Rep 2017; 38:3153-3159. [PMID: 29048647 DOI: 10.3892/or.2017.6005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 08/25/2017] [Indexed: 11/06/2022] Open
Abstract
The transdifferentiation of cancer cells into other types of cells in several types of tissues or organs has been studied. However, whether human osteosarcoma MNNG/HOS cells can transdifferentiate into other types of cells has seldom been reported. Meanwhile, the mechanism of tumor angiogenesis is still disputed, and whether MNNG/HOS cells participate in angiogenesis in osteosarcoma remains unknown. In the present study, the investigation was divided into two parts: in vitro and in vivo. In vitro, we cultivated MNNG/HOS cells under hypoxic conditions for 4 days and found that they typically showed a characteristic 'flagstone' appearance as cultured vascular endothelial cells (VECs). MNNG/HOS cells that were cultivated on Matrigel under hypoxic conditions gradually formed tubular-like structures. Furthermore, when cultured under hypoxic conditions for 4 days, MNNG/HOS cells also transcribed and expressed several molecular markers of VECs (CD31, CD34 and vWF). In vivo, MNNG/HOS cells (1x106 cells) were cultivated under hypoxic conditions and subcutaneously injected into nude mice; the mice were sacrificed 49 days after inoculation. Immunohistochemical staining with anti-human CD31 antibody showed evidence of tumor angiogenesis in human osteosarcoma MNNG/HOS cells. The results demonstrated that MNNG/HOS cells can transdifferentiate into vascular endothelial cell-like cells in vitro and in vivo.
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Affiliation(s)
- Xinwen Wang
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Weifeng Xu
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Shenglin Wang
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Feqiang Yu
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Jinyi Feng
- Department of Orthopaedics, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Xinwu Wang
- Department of Orthopaedics, The First Hospital of Putian City, Putian, Fujian 351100, P.R. China
| | - Lurong Zhang
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Jianhua Lin
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
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Zhang WJ, Chen C, Zhou ZH, Gao ST, Tee TJ, Yang LQ, Xu YY, Pang TH, Xu XY, Sun Q, Feng M, Wang H, Lu CL, Wu GZ, Wu S, Guan WX, Xu GF. Hypoxia-inducible factor-1 alpha Correlates with Tumor-Associated Macrophages Infiltration, Influences Survival of Gastric Cancer Patients. J Cancer 2017; 8:1818-1825. [PMID: 28819379 PMCID: PMC5556645 DOI: 10.7150/jca.19057] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 05/10/2017] [Indexed: 12/12/2022] Open
Abstract
Background: Hypoxia was a common feature for accelerating tumor metastasis by both inducting epithelial-mesenchymal transition (EMT) of tumor cells and polarization of tumor-associated macrophages (TAMs). The association and roles between hypoxia, EMT and TAMs in the biological behavior of gastric cancer (GC) for the time being recurrence is unclear. Material and methods: hypoixa by expression of hypoxia-inducible factor-1 alpha (HIF-1α), polarized functional status of infiltrated TAMs by immunohistochemical staining of CD68 and CD163, and the expression of E-cadherin as EMT property had been evaluated in 236 patients consecutive with histologically confirmed GC. Clinical significance was assessed for all these patients. Results: High expression of HIF-1α was found in patients with aggressive features, especially for recurrent patients. High infiltration of TAMs and abnormal expression of EMT-marker were also related to aggressive characteristics and predicted poor prognosis in GC. Meanwwhile, there existed a significant correlation among expression of HIF-1α, infiltration of TAMs and EMT marker in GC tissues. Multivariate Cox analysis revealed that high expression of HIF-1α combined TAMs infiltration were independent prognostic factors for disease-specific survival rate. Conclusion: HIF-1α is an unfavorable indicator for prognosis, may promote tumor progression through the induction of EMT and establishment of a pro-tumor immunosuppressive microenvironment. Further investigation into the therapeutic effects of blocking hypoxia is possible a potential strategy for GC treatment.
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Affiliation(s)
- Wei-Jie Zhang
- Department of General surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of General surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Cheng Chen
- Department of Radiotherapy, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zhi-Hua Zhou
- Department of Pathology, 101th Hospital of PLA, Wuxi, Jiangsu Providence, China
| | - Shan-Ting Gao
- Department of General surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Teong Jin Tee
- Department of Medical, Gastroenterology unit, Nilai Medical Center, Nilai, Negeri Sembilan, Malaysia
| | - Liu-Qing Yang
- Department of Gastroenterology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Yuan-Yuan Xu
- Department of Gastroenterology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Tao-Hong Pang
- Department of Gastroenterology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Xin-Yun Xu
- Department of Pathology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Qi Sun
- Department of Pathology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Min Feng
- Department of General surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of General surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Hao Wang
- Department of General surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of General surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Chun-Lei Lu
- Department of General surgery, 101th Hospital of PLA, Wuxi, Jiangsu Providence, China
| | - Guo-Zhong Wu
- Department of General surgery, 101th Hospital of PLA, Wuxi, Jiangsu Providence, China
| | - Sheng Wu
- Department of General surgery, 101th Hospital of PLA, Wuxi, Jiangsu Providence, China
| | - Wen-Xian Guan
- Department of General surgery, Drum Tower Clinical College of Nanjing Medical University, Nanjing, Jiangsu Province, China.,Department of General surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Gui-Fang Xu
- Department of Gastroenterology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
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Abstract
BACKGROUND Metastasis is the main cause of mortality in cancer patients. Two major routes of cancer cell spread are currently being recognized: dissemination via blood vessels (hematogenous spread) and dissemination via the lymphatic system (lymphogenous spread). Here, our current knowledge on the role of both blood and lymphatic vessels in cancer cell metastasis is summarized. In addition, I will discuss why cancer cells select one or both of the two routes to disseminate and I will provide a short description of the passive and active models of intravasation. Finally, lymphatic vessel density (LVD), blood vessel density (BVD), interstitial fluid pressure (IFP) and tumor hypoxia, as well as regional lymph node metastasis and the recently discovered primo vascular system (PVS) will be highlighted as important factors influencing tumor cell motility and spread and, ultimately, clinical outcome. CONCLUSIONS Lymphangiogenesis and angiogenesis are important phenomena involved in the spread of cancer cells and they are associated with a poor prognosis. It is anticipated that new discoveries and advancing knowledge on these phenomena will allow an improvement in the treatment of cancer patients.
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Affiliation(s)
- Roman Paduch
- Department of Virology and Immunology, Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University, Akademicka 19, 20-033, Lublin, Poland.
- Department of General Ophthalmology, Medical University of Lublin, Chmielna 1, 20-079, Lublin, Poland.
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