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Yoshida S, Kawai H, Soe Y, Eain HS, Sanou S, Takabatake K, Takeshita Y, Hisatomi M, Nagatsuka H, Asaumi J, Yanagi Y. Efficacy of Cisplatin-CXCR4 Antagonist Combination Therapy in Oral Cancer. Cancers (Basel) 2024; 16:2326. [PMID: 39001388 PMCID: PMC11240506 DOI: 10.3390/cancers16132326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/13/2024] [Accepted: 06/20/2024] [Indexed: 07/16/2024] Open
Abstract
Cisplatin is a platinum-based compound that is widely used for treating inoperable oral squamous cell carcinoma (OSCC) in Japan; however, resistance to cisplatin presents a challenge and innovative approaches are required. We aimed to investigate the therapeutic potential of targeting the chemokine receptor CXCR4, which is involved in angiogenesis and tumor progression, using the CXCR4 inhibitor AMD3100, in combination with cisplatin. AMD3100 induced necrosis and bleeding in OSCC xenografts by inhibiting angiogenesis. We investigated the combined ability of AMD3100 plus cisplatin to enhance the antitumor effect in cisplatin-resistant OSCC. An MTS assay identified HSC-2 cells as cisplatin-resistant cells in vitro. Mice treated with the cisplatin-AMD combination exhibited the most significant reduction in tumor volume, accompanied by extensive hemorrhage and necrosis. Histological examination indicated thin and short tumor vessels in the AMD and cisplatin-AMD groups. These results indicated that cisplatin and AMD3100 had synergistic antitumor effects, highlighting their potential for vascular therapy of refractory OSCC. Antitumor vascular therapy using cisplatin combined with a CXCR4 inhibitor provides a novel strategy for addressing cisplatin-resistant OSCC.
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Affiliation(s)
- Saori Yoshida
- Preliminary Examination Room, Okayama University Hospital, Okayama 700-8558, Japan; (S.Y.); (Y.Y.)
| | - Hotaka Kawai
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan; (Y.S.); (H.S.E.); (H.N.)
| | - Yamin Soe
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan; (Y.S.); (H.S.E.); (H.N.)
| | - Htoo Shwe Eain
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan; (Y.S.); (H.S.E.); (H.N.)
| | - Sho Sanou
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan;
| | - Kiyofumi Takabatake
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan; (Y.S.); (H.S.E.); (H.N.)
| | - Yohei Takeshita
- Department of Oral and Maxillofacial Radiology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan; (Y.T.); (J.A.)
| | - Miki Hisatomi
- Department of Oral and Maxillofacial Radiology, Okayama University Hospital, Okayama 700-8558, Japan;
| | - Hitoshi Nagatsuka
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan; (Y.S.); (H.S.E.); (H.N.)
| | - Junichi Asaumi
- Department of Oral and Maxillofacial Radiology, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan; (Y.T.); (J.A.)
| | - Yoshinobu Yanagi
- Preliminary Examination Room, Okayama University Hospital, Okayama 700-8558, Japan; (S.Y.); (Y.Y.)
- Department of Dental Informatics, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8525, Japan
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Hager T, Borchert S, Wessolly M, Mathilakathu A, Mairinger E, Kollmeier J, Mairinger T, Hegedus B, Greimelmaier K, Wohlschlaeger J, Herrmann K, Mairinger FD. One Third of Malignant Pleural Mesothelioma Shows High Immunohistochemical Expression of MSLN or CXCR4 Which Indicates Potent Candidates for Endo-Radiotherapy. Int J Mol Sci 2023; 24:ijms24076356. [PMID: 37047331 PMCID: PMC10094643 DOI: 10.3390/ijms24076356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023] Open
Abstract
Malignant pleural mesothelioma (MPM) is a mainly asbestos-related tumour associated with a very poor prognosis. Therapeutic approaches include multimodal therapy and chemotherapeutics, with cisplatin being the drug of choice, but response rates of only up to 14% indicate very poor outcomes. Effective treatment options are lacking. Besides the diagnostic usage of radioligands in positron emission tomography (PET)/computed tomography (CT), the endo-radioligand therapy with Lu177 has been proven as a powerful tool in cancer therapy. Mesothelin (MSLN) and C-XC chemokine receptor 4 (CXCR4) are membrane-bound proteins, expressed in certain cancers, and thus are promising targets for endo-radiotherapy. A significant portion of high MSLN- or CXCR4-expressing tumors within the MPM may open the field for this sophisticated treatment approach in the near future. Formalin-fixed, paraffin-embedded (FFPE) tumour specimens from 105 patients suffering from MPM and treated at the Lung Cancer Centre of Essen and at the Helios Klinikum Emil von Behring Berlin were screened. The tumour samples were arranged in tissue microarrays. We immunohistochemically stained the tumour samples against MSLN and CXCR4. The protein expressions of the stainings were scored by a pathologist by using a semiquantitative method. The data obtained were correlated with the clinical outcome. Overall, 77.1% of the analysed tumours showed CXCR4 protein expression (25.7% of them at high expression level (Score 3)). 48.6% of all samples showed an overall strong staining (Score ≥ 2), 59% of the investigated tumours showed MSLN protein expression (10.5% of them at high expression (Score 3)), and 36.2% of all samples showed an overall strong staining (Score ≥ 2). Our results show significant tissue expression levels, for both CXCR4 and MSLN protein, in a major portion of clinical MPM samples. One-third of patients showed outstanding immunoexpression of at least one of these markers, making them interesting candidates for radioligand-based PET/CT diagnostics and follow-up and furthermore may profit from endo-radiotherapy.
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Kaddour H, Kopcho S, Lyu Y, Shouman N, Paromov V, Pratap S, Dash C, Kim EY, Martinson J, McKay H, Epeldegui M, Margolick JB, Stapleton JT, Okeoma CM. HIV-infection and cocaine use regulate semen extracellular vesicles proteome and miRNAome in a manner that mediates strategic monocyte haptotaxis governed by miR-128 network. Cell Mol Life Sci 2021; 79:5. [PMID: 34936021 PMCID: PMC9134786 DOI: 10.1007/s00018-021-04068-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/22/2021] [Accepted: 11/30/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Extracellular vesicles (EVs) are regulators of cell-cell interactions and mediators of horizontal transfer of bioactive molecules between cells. EV-mediated cell-cell interactions play roles in physiological and pathophysiological processes, which maybe modulated by exposure to pathogens and cocaine use. However, the effect of pathogens and cocaine use on EV composition and function are not fully understood. RESULTS Here, we used systems biology and multi-omics analysis to show that HIV infection (HIV +) and cocaine (COC) use (COC +) promote the release of semen-derived EVs (SEV) with dysregulated extracellular proteome (exProtein), miRNAome (exmiR), and exmiR networks. Integrating SEV proteome and miRNAome revealed a significant decrease in the enrichment of disease-associated, brain-enriched, and HIV-associated miR-128-3p (miR-128) in HIV + COC + SEV with a concomitant increase in miR-128 targets-PEAK1 and RND3/RhoE. Using two-dimensional-substrate single cell haptotaxis, we observed that in the presence of HIV + COC + SEV, contact guidance provided by the extracellular matrix (ECM, collagen type 1) network facilitated far-ranging haptotactic cues that guided monocytes over longer distances. Functionalizing SEV with a miR-128 mimic revealed that the strategic changes in monocyte haptotaxis are in large part the result of SEV-associated miR-128. CONCLUSIONS We propose that compositionally and functionally distinct HIV + COC + and HIV-COC- SEVs and their exmiR networks may provide cells relevant but divergent haptotactic guidance in the absence of chemotactic cues, under both physiological and pathophysiological conditions.
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Affiliation(s)
- Hussein Kaddour
- Department of Pharmacology, Stony Brook University Renaissance School of Medicine, Stony Brook, NY, 11794-8651, USA
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, 10591, USA
| | - Steven Kopcho
- Department of Pharmacology, Stony Brook University Renaissance School of Medicine, Stony Brook, NY, 11794-8651, USA
| | - Yuan Lyu
- Department of Pharmacology, Stony Brook University Renaissance School of Medicine, Stony Brook, NY, 11794-8651, USA
| | - Nadia Shouman
- Department of Pharmacology, Stony Brook University Renaissance School of Medicine, Stony Brook, NY, 11794-8651, USA
| | - Victor Paromov
- CRISALIS, School of Graduate Studies and Research, Proteomics Core, Meharry Medical College, Nashville, TN, 37208, USA
| | - Siddharth Pratap
- CRISALIS, School of Graduate Studies and Research, Bioinformatics Core, Meharry Medical College, Nashville, TN, 37208, USA
| | - Chandravanu Dash
- Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN, 37208, USA
| | - Eun-Young Kim
- Division of Infectious Diseases, Department of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Jeremy Martinson
- Department of Infectious Diseases and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Heather McKay
- Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Marta Epeldegui
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at UCLA, UCLA AIDS Institute and UCLA Jonsson Comprehensive Cancer Center, Los Angeles, USA
- David Geffen School of Medicine at UCLA, UCLA AIDS Institute, Los Angeles, USA
- UCLA Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, USA
| | - Joseph B Margolick
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21207, USA
| | - Jack T Stapleton
- Departments of Internal Medicine, Microbiology and Immunology, University of Iowa and Iowa City Veterans Administration Healthcare, Iowa City, IA, 52242-1081, USA
| | - Chioma M Okeoma
- Department of Pharmacology, Stony Brook University Renaissance School of Medicine, Stony Brook, NY, 11794-8651, USA.
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Saxena S, Singh RK. Chemokines orchestrate tumor cells and the microenvironment to achieve metastatic heterogeneity. Cancer Metastasis Rev 2021; 40:447-476. [PMID: 33959849 PMCID: PMC9863248 DOI: 10.1007/s10555-021-09970-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/22/2021] [Indexed: 01/26/2023]
Abstract
Chemokines, a subfamily of the cell cytokines, are low molecular weight proteins known to induce chemotaxis in leukocytes in response to inflammatory and pathogenic signals. A plethora of literature demonstrates that chemokines and their receptors regulate tumor progression and metastasis. With these diverse functionalities, chemokines act as a fundamental link between the tumor cells and their microenvironment. Recent studies demonstrate that the biology of chemokines and their receptor in metastasis is complex as numerous chemokines are involved in regulating site-specific tumor growth and metastasis. Successful treatment of disseminated cancer is a significant challenge. The most crucial problem for treating metastatic cancer is developing therapy regimes capable of overcoming heterogeneity problems within primary tumors and among metastases and within metastases (intralesional). This heterogeneity of malignant tumor cells can be related to metastatic potential, response to chemotherapy or specific immunotherapy, and many other factors. In this review, we have emphasized the role of chemokines in the process of metastasis and metastatic heterogeneity. Individual chemokines may not express the full potential to address metastatic heterogeneity, but chemokine networks need exploration. Understanding the interplay between chemokine-chemokine receptor networks between the tumor cells and their microenvironment is a novel approach to overcome the problem of metastatic heterogeneity. Recent advances in the understanding of chemokine networks pave the way for developing a potential targeted therapeutic strategy to treat metastatic cancer.
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Affiliation(s)
- Sugandha Saxena
- Department of Pathology and Microbiology, University of Nebraska Medical Center, 985900 Nebraska Medical Center, Omaha, NE, 68198-5900, USA
| | - Rakesh K Singh
- Department of Pathology and Microbiology, University of Nebraska Medical Center, 985900 Nebraska Medical Center, Omaha, NE, 68198-5900, USA.
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Sun Y, Pan D, Kang K, Sun MJ, Li YL, Sang LX, Chang B. Eosinophilic pancreatitis: a review of the pathophysiology, diagnosis, and treatment. Gastroenterol Rep (Oxf) 2021; 9:115-124. [PMID: 34026218 PMCID: PMC8128011 DOI: 10.1093/gastro/goaa087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 09/24/2020] [Accepted: 11/01/2020] [Indexed: 12/19/2022] Open
Abstract
Eosinophilic pancreatitis (EP) is an extremely rare disease caused by purely eosinophilic infiltration of the pancreas. EP is prone to being misdiagnosed as pancreatic cancer, causing unnecessary economic and physical harm to the patient. We report three cases of EP that were cured by steroids without relapse from 2017 to now. The clinical data of the three patients, including clinical manifestations, serological manifestations, imaging (ultrasound, computed tomography, and MRI), pathological diagnosis and treatment, and telephone follow-up of all patients, were retrospectively analysed. In addition, a literature search was conducted on the Web of Science and PubMed databases using key terms related to EP, considering case reports with no restrictions on the date of publication or language. In conclusion, we analysed 19 cases and determined the diagnostic criteria for EP. The diagnostic algorithm for EP can be used to diagnose EP easily. We hope that our standards and algorithm can reduce the rate of misdiagnosis and contribute to clinical diagnosis and treatment. In addition, we expect to evaluate more EP cases to test our diagnostic criteria and design a systematic diagnostic flow chart.
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Affiliation(s)
- Yue Sun
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, P. R. China
| | - Dan Pan
- Department of Geriatrics, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, P. R. China
| | - Kai Kang
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, P. R. China
| | - Ming-Jun Sun
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, P. R. China
| | - Yi-Ling Li
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, P. R. China
| | - Li-Xuan Sang
- Department of Geriatrics, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, P. R. China
| | - Bing Chang
- Department of Gastroenterology, First Affiliated Hospital, China Medical University, Shenyang, Liaoning, P. R. China
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CXCR4 inhibition modulates the tumor microenvironment and retards the growth of B16-OVA melanoma and Renca tumors. Melanoma Res 2020; 30:14-25. [PMID: 31524789 DOI: 10.1097/cmr.0000000000000639] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
To determine whether blockade of the chemokine receptor CXCR4 might alter the tumor microenvironment and inhibit tumor growth, we tested the efficacy of the CXCR4 antagonist X4-136 as a single agent and in combination with various immune checkpoint inhibitors in the syngeneic murine melanoma model B16-OVA. We also tested its activity alone and in combination with axitinib in the renal cancer model Renca. We found that X4-136 exhibited potent single agent antitumor activity in the B16-OVA model that was additive to that of an anti-PDL1 antibody. The antitumor activities were associated with a reduction in the number of immunosuppressive regulatory T cells and myeloid-derived suppressor cells and an increase in the number of tumor-specific CD8/perforin cells in the tumor-microenvironment. Apart from these immune effects, X4-136 alone and in combination with checkpoint inhibitors inhibited the Akt/FOXO-3a cell survival pathway in vitro and in vivo, suggesting that it might have antitumor activity independent of its effects on immune cell trafficking. Similar effects on tumor growth and cytotoxic T lymphocytes infiltration were observed in the Renca model. These studies show that the effects of CXCR4 blockade on immune cell trafficking might serve as a useful adjunct to immune checkpoint inhibitors and other therapies in the treatment of cancer.
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7
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The mutation of Transportin 3 gene that causes limb girdle muscular dystrophy 1F induces protection against HIV-1 infection. PLoS Pathog 2019; 15:e1007958. [PMID: 31465518 PMCID: PMC6715175 DOI: 10.1371/journal.ppat.1007958] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 07/03/2019] [Indexed: 01/10/2023] Open
Abstract
The causative mutation responsible for limb girdle muscular dystrophy 1F (LGMD1F) is one heterozygous single nucleotide deletion in the stop codon of the nuclear import factor Transportin 3 gene (TNPO3). This mutation causes a carboxy-terminal extension of 15 amino acids, producing a protein of unknown function (TNPO3_mut) that is co-expressed with wild-type TNPO3 (TNPO3_wt). TNPO3 has been involved in the nuclear transport of serine/arginine-rich proteins such as splicing factors and also in HIV-1 infection through interaction with the viral integrase and capsid. We analyzed the effect of TNPO3_mut on HIV-1 infection using PBMCs from patients with LGMD1F infected ex vivo. HIV-1 infection was drastically impaired in these cells and viral integration was reduced 16-fold. No significant effects on viral reverse transcription and episomal 2-LTR circles were observed suggesting that the integration of HIV-1 genome was restricted. This is the second genetic defect described after CCR5Δ32 that shows strong resistance against HIV-1 infection.
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Yoshida S, Kawai H, Eguchi T, Sukegawa S, Oo MW, Anqi C, Takabatake K, Nakano K, Okamoto K, Nagatsuka H. Tumor Angiogenic Inhibition Triggered Necrosis (TAITN) in Oral Cancer. Cells 2019; 8:cells8070761. [PMID: 31336612 PMCID: PMC6678844 DOI: 10.3390/cells8070761] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 07/18/2019] [Accepted: 07/20/2019] [Indexed: 01/09/2023] Open
Abstract
CXCR4 is a chemokine receptor crucial in tumor progression, although the angiogenic role of CXCR4 in oral squamous cell carcinoma (OSCC) has not been investigated. Here we show that CXCR4 is crucial for tumor angiogenesis, thereby supporting tumor survival in OSCC. Immunohistochemistry on human clinical specimens revealed that CXCR4 and a tumor vasculature marker CD34 were co-distributed in tumor vessels in human OSCC specimens. To uncover the effects of CXCR4 inhibition, we treated the OSCC-xenografted mice with AMD3100, so-called plerixafor, an antagonist of CXCR4. Notably, we found a unique pathophysiological structure defined as tumor angiogenic inhibition triggered necrosis (TAITN), which was induced by the CXCR4 antagonism. Treatment with AMD3100 increased necrotic areas with the induction of hypoxia-inducible factor-1α in the xenografted tumors, suggesting that AMD3100-induced TAITN was involved in hypoxia and ischemia. Taken together, we demonstrated that CXCR4 plays a crucial role in tumor angiogenesis required for OSCC progression, whereas TAITN induced by CXCR4 antagonism could be an effective anti-angiogenic therapeutic strategy in OSCC treatment.
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Affiliation(s)
- Saori Yoshida
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Hotaka Kawai
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan.
| | - Takanori Eguchi
- Department of Dental Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan.
- Advanced Research Center for Oral and Craniofacial Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan.
| | - Shintaro Sukegawa
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
- Division of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, Takamatsu, Kagawa 760-8557, Japan
| | - May Wathone Oo
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Chang Anqi
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
- Department of Anatomy, Basic Medicine Science College, Harbin Medical University, Harbin 150076, China
| | - Kiyofumi Takabatake
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Keisuke Nakano
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
- Advanced Research Center for Oral and Craniofacial Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Kuniaki Okamoto
- Department of Dental Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
| | - Hitoshi Nagatsuka
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
- Advanced Research Center for Oral and Craniofacial Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
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9
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Natoli R, Mason E, Jiao H, Chuah A, Patel H, Fernando N, Valter K, Wells CA, Provis J, Rutar M. Dynamic Interplay of Innate and Adaptive Immunity During Sterile Retinal Inflammation: Insights From the Transcriptome. Front Immunol 2018; 9:1666. [PMID: 30073000 PMCID: PMC6058037 DOI: 10.3389/fimmu.2018.01666] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 07/04/2018] [Indexed: 01/09/2023] Open
Abstract
The pathogenesis of many retinal degenerations, such as age-related macular degeneration (AMD), is punctuated by an ill-defined network of sterile inflammatory responses. The delineation of innate and adaptive immune milieu among the broad leukocyte infiltrate, and the gene networks, which construct these responses, are poorly described in the eye. Using photo-oxidative damage in a rodent model of subretinal inflammation, we employed a novel RNA-sequencing framework to map the global gene network signature of retinal leukocytes. This revealed a previously uncharted interplay of adaptive immunity during subretinal inflammation, including prolonged enrichment of myeloid and lymphocyte migration, antigen presentation, and the alternative arm of the complement cascade involving Factor B. We demonstrate Factor B-deficient mice are protected against macrophage infiltration and subretinal inflammation. Suppressing the drivers of retinal leukocyte proliferation, or their capacity to elicit complement responses, may help preserve retinal structure and function during sterile inflammation in diseases such as AMD.
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Affiliation(s)
- Riccardo Natoli
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Elizabeth Mason
- The Centre for Stem Cell Systems, Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, VIC, Australia
| | - Haihan Jiao
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Aaron Chuah
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Hardip Patel
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Nilisha Fernando
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia
| | - Krisztina Valter
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Christine A Wells
- The Centre for Stem Cell Systems, Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, VIC, Australia
| | - Jan Provis
- The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, Australia.,ANU Medical School, The Australian National University, Canberra, ACT, Australia
| | - Matt Rutar
- The Centre for Stem Cell Systems, Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, VIC, Australia
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10
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Peripheral Tissue Chemokines: Homeostatic Control of Immune Surveillance T Cells. Trends Immunol 2018; 39:734-747. [PMID: 30001872 DOI: 10.1016/j.it.2018.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 05/18/2018] [Accepted: 06/12/2018] [Indexed: 12/15/2022]
Abstract
Cellular immunity is governed by a complex network of migratory cues that enable appropriate immune cell responses in a timely and spatially controlled fashion. This review focuses on the chemokines and their receptors regulating the steady-state localisation of immune cells within healthy peripheral tissues. Steady-state immune cell traffic is not well understood but is thought to involve constitutive (homeostatic) chemokines. The recent discovery of tissue-resident memory T cells (TRM cells) illustrates our need for understanding how chemokines control immune cell mobilisation and/or retention. These studies will be critical to unravel novel pathways for preserving tissue function (aging) and preventing tissue disease (vaccination).
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11
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Heon Lee I, Palombo MS, Zhang X, Szekely Z, Sinko PJ. Design and evaluation of a CXCR4 targeting peptide 4DV3 as an HIV entry inhibitor and a ligand for targeted drug delivery. Eur J Pharm Biopharm 2018; 138:11-22. [PMID: 29894816 DOI: 10.1016/j.ejpb.2018.06.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 04/27/2018] [Accepted: 06/04/2018] [Indexed: 12/09/2022]
Abstract
The feasibility of utilizing the cell surface chemokine receptor CXCR4 for human immunodeficiency virus (HIV) entry inhibition and as an intracellular portal for targeted drug delivery was evaluated. Novel DV3 ligands (1DV3, 2DV3, and 4DV3) were designed, synthesized and conjugated to various probes (fluorescein isothiocyanate (FITC) or biotin) and cargos with sizes ranging from 10 to 50 nm (polyethylene glycol (PEG), streptavidin, and a polymeric nanoparticle). 4DV3 conjugated probes inhibited HIV-1 entry into the CXCR4-expressing reporter cell line TZM-bl (IC50 at 553 nM) whereas 1DV3 and 2DV3 did not. 4DV3 also inhibited binding of anti-CXCR4 antibody 44,708 to TZM-bl cells with nanomolar potency, while the small-molecule CXCR4 antagonist AMD3100 did not. Molecular modeling suggested simultaneous binding of a single 4DV3 molecule to four CXCR4 molecules. Differences in CXCR4-binding sites could explain the discrete inhibitory effects observed for 4DV3, the 44,708 antibody and AMD3100. In the Sup-T1 cell chemotaxis assay, the 4DV3 ligand functioned as a CXCR4 allosteric enhancer. In addition, 4DV3 ligand-conjugated cargos with sizes ranging from 10 to 50 nm were taken up into CXCR4-expressing Sup-T1 and TZM-bl cells, demonstrating that CXCR4 could serve as a drug delivery portal for nanocarriers. The uptake of 4DV3 functionalized nanocarriers combined with the allosteric interaction with CXCR4 suggests enhanced endocytosis occurs when 4DV3 is the targeting ligand. The current results indicate that 4DV3 might serve as a prototype for a new type of dual function ligand, one that acts as a HIV-1 entry inhibitor and a CXCR4 drug delivery targeting ligand.
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Affiliation(s)
- In Heon Lee
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Rd, Piscataway, NJ 08854, USA.
| | - Matthew S Palombo
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Rd, Piscataway, NJ 08854, USA.
| | - Xiaoping Zhang
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Rd, Piscataway, NJ 08854, USA.
| | - Zoltan Szekely
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Rd, Piscataway, NJ 08854, USA.
| | - Patrick J Sinko
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Rd, Piscataway, NJ 08854, USA.
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Walenkamp AME, Lapa C, Herrmann K, Wester HJ. CXCR4 Ligands: The Next Big Hit? J Nucl Med 2017; 58:77S-82S. [PMID: 28864616 DOI: 10.2967/jnumed.116.186874] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 06/02/2017] [Indexed: 12/12/2022] Open
Abstract
The G protein-coupled protein receptor C-X-C chemokine receptor 4 (CXCR4) is an attractive target for cancer diagnosis and treatment, as it is overexpressed in many solid and hematologic cancers. Binding of its ligand, C-X-C chemokine ligand 12 (CXCL12), results in receptor internalization and activation of several signal transduction pathways, such as phosphoinositide 3-kinase/protein kinase B, which are critical in cell proliferation, angiogenesis, development of metastasis, and survival. Also, the CXCR4-CXCL12 axis is involved in the interaction between hematopoietic stem cells (as well as hematologic and solid tumor cells) and their protective microenvironment. This interaction can be disrupted by CXCR4 antagonists. This concept is being used clinically to harvest hematopoietic stem or progenitor cells from bone marrow and to sensitize cancer cells to conventional chemotherapy and radiotherapy, and the potential to overcome tumor microenvironment-driven immunosuppression is being explored. This review focuses on new strategies for improvement of cancer treatment by targeting of the CXCR4-CXCL12 interaction. Because of its critical role in cancer, many peptidic and nonpeptidic ligands with different modes of antagonistic activity against the CXCR4-CXCL12 axis have been developed, with some of them reaching clinical trials. Molecular imaging with recently developed radiolabeled CXCR4 ligands could facilitate the selection of patients who might benefit from directed targeted therapy, including CXCR4-directed endoradiotherapy.
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Affiliation(s)
- Annemiek M E Walenkamp
- Department of Medical Oncology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Constantin Lapa
- Department of Nuclear Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Ken Herrmann
- Department of Nuclear Medicine, University Hospital Essen, Essen, Germany.,Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Hans-Jürgen Wester
- Pharmaceutical Radiochemistry, Technische Universität München, Munich, Germany; and.,Scintomics GmbH, Fuerstenfeldbruck, Germany
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13
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Wang W, Shen F, Wang C, Lu W, Wei J, Shang A, Wang C. MiR-1-3p inhibits the proliferation and invasion of bladder cancer cells by suppressing CCL2 expression. Tumour Biol 2017; 39:1010428317698383. [PMID: 28618950 DOI: 10.1177/1010428317698383] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We attempted to analyze the effects of miR-1-3p and CCL2 on the proliferation, migration, and invasion of bladder cancer cells. A total of 18 pairs of bladder cancer tissues with corresponding adjacent tissues and the 6 cases of normal tissues were collected. The expressions of miR-1-3p and CCL2 in the cancer tissues were evaluated using quantitative real-time polymerase chain reaction and western blot. The relationship between miR-1-3p and CCL2 was assessed using luciferase reporter assay. The UM-UC-3 bladder cancer cells were transfected with CCL2 small interfering RNA and miR-1-3p mimics. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, colony formation assay, wound healing assay, Transwell assay, and the flow cytometry test were used to detect the proliferation, migration, invasion, and apoptosis of bladder cancer cells. Bladder cancer tissues had lower levels of miR-1-3p but higher levels of CCL2 than normal tissues ( p < 0.05). The transfection of miR-1-3p mimics and CCL2 small interfering RNA remarkably suppressed cell proliferation and invasion and promoted apoptosis of cells ( p < 0.05). Results of the luciferase reporter gene assay demonstrated that miR-1-3p targeted CCL2. MiR-1-3p suppresses the proliferation and invasion of urinary bladder cancer cells by targeting CCL2.
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Affiliation(s)
- Weiwei Wang
- 1 Department of Pathology, The First People's Hospital of Yancheng City, Yancheng, China.,2 Department of Pathology, The Sixth People's Hospital of Yancheng City, Yancheng, China
| | - Fujun Shen
- 3 Department of Oncology, Yancheng Hospital Affiliated to Medical College of Southeast University and The Third People's Hospital of Yancheng City, Yancheng, China
| | - Chunlei Wang
- 4 Department of Laboratory Medicine, The Sixth People's Hospital of Yancheng City, Yancheng, China
| | - Wenying Lu
- 4 Department of Laboratory Medicine, The Sixth People's Hospital of Yancheng City, Yancheng, China
| | - Jun Wei
- 5 Clinical Medicine School, Ningxia Medical University, Yinchuan, China
| | - Anquan Shang
- 4 Department of Laboratory Medicine, The Sixth People's Hospital of Yancheng City, Yancheng, China.,5 Clinical Medicine School, Ningxia Medical University, Yinchuan, China
| | - Chunbin Wang
- 3 Department of Oncology, Yancheng Hospital Affiliated to Medical College of Southeast University and The Third People's Hospital of Yancheng City, Yancheng, China
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Role of Chemokines in Shaping Macrophage Activity in AMD. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 854:11-6. [PMID: 26427387 DOI: 10.1007/978-3-319-17121-0_2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Age-related macular degeneration (AMD) is a multifactorial disorder that affects millions of individuals worldwide. While the advent of anti-VEGF therapy has allowed for effective treatment of neovascular 'wet' AMD, no treatments are available to mitigate the more prevalent 'dry' forms of the disease. A role for inflammatory processes in the progression of AMD has emerged over a period of many years, particularly the characterisation of leukocyte infiltrates in AMD-affected eyes, as well as in animal models. This review focuses on the burgeoning understanding of chemokines in the retina, and their potential role in shaping the recruitment and activation of macrophages in AMD. Understanding the mechanisms which promote macrophage activity in the degenerating retina may be key to controlling the potentially devastating consequences of inflammation in diseases such as AMD.
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Reyes-Rodriguez AL, Reuter MA, McDonald D. Dendritic Cells Enhance HIV Infection of Memory CD4(+) T Cells in Human Lymphoid Tissues. AIDS Res Hum Retroviruses 2016; 32:203-10. [PMID: 26651015 DOI: 10.1089/aid.2015.0235] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Dendritic cells (DCs) play a key role in controlling infections by coordinating innate and adaptive immune responses to invading pathogens. Paradoxically, DCs can increase HIV-1 dissemination in vitro by binding and transferring infectious virions to CD4(+) T cells, a process called transinfection. Transinfection has been well characterized in cultured cell lines and circulating primary T cells, but it is unknown whether DCs enhance infection of CD4(+) T cells in vivo. In untreated HIV infection, massive CD4(+) T-cell infection and depletion occur in secondary lymphoid tissues long before decline is evident in the peripheral circulation. To study the role of DCs in HIV infection of lymphoid tissues, we utilized human tonsil tissues, cultured either as tissue blocks or as aggregate suspension cultures, in single-round infection experiments. In these experiments, addition of monocyte-derived DCs (MDDCs) to the cultures increased T-cell infection, particularly in CD4(+) T cells expressing lower levels of HLA-DR. Subset analysis demonstrated that MDDCs increased HIV-1 infection of central and effector memory T-cell populations. Depletion of endogenous myeloid DCs (myDCs) from the cultures decreased memory T-cell infection, and readdition of MDDCs restored infection to predepletion levels. Using an HIV-1 fusion assay, we found that MDDCs equally increased HIV delivery into naïve, central, and effector memory T cells in the cultures, whereas predepletion of myDCs reduced fusion into memory T cells. Together, these data suggest that resident myDCs facilitate memory T-cell infection in lymphoid tissues, implicating DC-mediated transinfection in driving HIV dissemination within these tissues in untreated HIV/AIDS.
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Affiliation(s)
- Angel L. Reyes-Rodriguez
- Department of Molecular Biology and Microbiology, Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - Morgan A. Reuter
- Department of Microbiology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - David McDonald
- Department of Molecular Biology and Microbiology, Case Western Reserve University School of Medicine, Cleveland, Ohio
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Dupré L, Houmadi R, Tang C, Rey-Barroso J. T Lymphocyte Migration: An Action Movie Starring the Actin and Associated Actors. Front Immunol 2015; 6:586. [PMID: 26635800 PMCID: PMC4649030 DOI: 10.3389/fimmu.2015.00586] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 11/02/2015] [Indexed: 12/14/2022] Open
Abstract
The actin cytoskeleton is composed of a dynamic filament meshwork that builds the architecture of the cell to sustain its fundamental properties. This physical structure is characterized by a continuous remodeling, which allows cells to accomplish complex motility steps such as directed migration, crossing of biological barriers, and interaction with other cells. T lymphocytes excel in these motility steps to ensure their immune surveillance duties. In particular, actin cytoskeleton remodeling is a key to facilitate the journey of T lymphocytes through distinct tissue environments and to tune their stop and go behavior during the scanning of antigen-presenting cells. The molecular mechanisms controlling actin cytoskeleton remodeling during T lymphocyte motility have been only partially unraveled, since the function of many actin regulators has not yet been assessed in these cells. Our review aims to integrate the current knowledge into a comprehensive picture of how the actin cytoskeleton drives T lymphocyte migration. We will present the molecular actors that control actin cytoskeleton remodeling, as well as their role in the different T lymphocyte motile steps. We will also highlight which challenges remain to be addressed experimentally and which approaches appear promising to tackle them.
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Affiliation(s)
- Loïc Dupré
- INSERM, UMR 1043, Centre de Physiopathologie de Toulouse Purpan , Toulouse , France ; Université Toulouse III Paul-Sabatier , Toulouse , France ; CNRS, UMR 5282 , Toulouse , France
| | - Raïssa Houmadi
- INSERM, UMR 1043, Centre de Physiopathologie de Toulouse Purpan , Toulouse , France ; Université Toulouse III Paul-Sabatier , Toulouse , France ; CNRS, UMR 5282 , Toulouse , France
| | - Catherine Tang
- INSERM, UMR 1043, Centre de Physiopathologie de Toulouse Purpan , Toulouse , France ; Université Toulouse III Paul-Sabatier , Toulouse , France ; CNRS, UMR 5282 , Toulouse , France ; Master BIOTIN, Université Montpellier I , Montpellier , France
| | - Javier Rey-Barroso
- INSERM, UMR 1043, Centre de Physiopathologie de Toulouse Purpan , Toulouse , France ; Université Toulouse III Paul-Sabatier , Toulouse , France ; CNRS, UMR 5282 , Toulouse , France
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17
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Tanios F, Pelisek J, Lutz B, Reutersberg B, Matevossian E, Schwamborn K, Hösel V, Eckstein HH, Reeps C. CXCR4: A Potential Marker for Inflammatory Activity in Abdominal Aortic Aneurysm Wall. Eur J Vasc Endovasc Surg 2015; 50:745-53. [PMID: 26346005 DOI: 10.1016/j.ejvs.2015.07.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 07/30/2015] [Indexed: 12/27/2022]
Abstract
OBJECTIVES The aim of the study was to evaluate the potential role of chemokine receptor CXCR4 and its ligand CXCL12 in the pathogenesis of abdominal aortic aneurysm (AAA). METHODS AAA tissue specimens were obtained from the anterior or lateral aneurysm sac of patients (n = 32, 26 males, 6 females; 66.8 ± 11.2 years, diameter 64.4 ± 17.0 mm), who underwent elective open surgical repair. Twelve non-aneurysmal aortic specimens from transplant donors served as controls. Expression analysis of CXCR4 and CXCL12 at mRNA and protein level was determined by quantitative reverse transcription-polymerase chain reaction (RT-PCR) and western blot. Immunohistochemical staining of corresponding histological sections for CD3 (T-cells), CD20 (B-cells), and CD68 (macrophages) was performed to determine the cellular localization of CXCR4 and CXCL12. Data were analyzed with SPSS 20.0 using Mann-Whitney U test and Spearman's rank correlation coefficient. RESULTS Gene expression of CXCR4 and CXCL12 was 9.6 and 4.6 fold higher in AAA than in non-aneurysmal aorta (p = .0004 and p < .0001, respectively). Likewise, the protein level of CXCR4 was increased 3.2 fold in AAA wall compared with non-aneurysmal aortic tissue (p < .0001), although CXCL12 could not be detected. Immunohistochemical analysis revealed that CXCR4 was expressed in B and T lymphocytes and macrophages, and CXCL12 was observed only in plasma cells. CONCLUSIONS This study confirmed the over expression of CXCR4 in human AAA tissue. CXCR4 was detected both at the mRNA and the protein level and by immunohistochemistry, especially in inflammatory cells. In contrast, CXCL12 expression was observed only at the mRNA level, with the exception of plasma cells. The exact role of CXCR4/CXCL12 in AAA has to be further elucidated.
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Affiliation(s)
- F Tanios
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Munich, Germany
| | - J Pelisek
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Munich, Germany.
| | - B Lutz
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Munich, Germany
| | - B Reutersberg
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Munich, Germany
| | - E Matevossian
- Department of Surgery, Munich Transplant Centre, Klinikum rechts der Isar, Munich, Germany
| | - K Schwamborn
- Institute of Pathology, Klinikum rechts der Isar, Munich, Germany
| | - V Hösel
- Department of Mathematical Modeling of Biological Systems, Technische Universität München, Munich, Germany
| | - H-H Eckstein
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Munich, Germany
| | - C Reeps
- Department of Vascular and Endovascular Surgery, Klinikum rechts der Isar, Munich, Germany
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18
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Jeng MY, Ali I, Ott M. Manipulation of the host protein acetylation network by human immunodeficiency virus type 1. Crit Rev Biochem Mol Biol 2015; 50:314-25. [PMID: 26329395 PMCID: PMC4816045 DOI: 10.3109/10409238.2015.1061973] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Over the past 15 years, protein acetylation has emerged as a globally important post-translational modification that fine-tunes major cellular processes in many life forms. This dynamic regulatory system is critical both for complex eukaryotic cells and for the viruses that infect them. HIV-1 accesses the host acetylation network by interacting with several key enzymes, thereby promoting infection at multiple steps during the viral life cycle. Inhibitors of host histone deacetylases and bromodomain-containing proteins are now being pursued as therapeutic strategies to enhance current antiretroviral treatment. As more acetylation-targeting compounds are reaching clinical trials, it is time to review the role of reversible protein acetylation in HIV-infected CD4(+) T cells.
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Affiliation(s)
- Mark Y. Jeng
- Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA
- Department of Medicine, University of California, San Francisco, CA 94158, USA
| | - Ibraheem Ali
- Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA
- Department of Medicine, University of California, San Francisco, CA 94158, USA
| | - Melanie Ott
- Gladstone Institute of Virology and Immunology, San Francisco, CA 94158, USA
- Department of Medicine, University of California, San Francisco, CA 94158, USA
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19
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Yuan A, Lee Y, Choi U, Moeckel G, Karihaloo A. Chemokine receptor Cxcr4 contributes to kidney fibrosis via multiple effectors. Am J Physiol Renal Physiol 2014; 308:F459-72. [PMID: 25537742 DOI: 10.1152/ajprenal.00146.2014] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Kidney fibrosis is the final common pathway for virtually every type of chronic kidney disease and is a consequence of a prolonged healing response that follows tissue inflammation. Chronic kidney inflammation ultimately leads to progressive tissue injury and scarring/fibrosis. Several pathways have been implicated in the progression of kidney fibrosis. In the present study, we demonstrate that G protein-coupled chemokine (C-X-C motif) receptor (CXCR)4 was significantly upregulated after renal injury and that sustained activation of Cxcr4 expression augmented the fibrotic response. We demonstrate that after unilateral ureteral obstruction (UUO), both gene and protein expression of Cxcr4 were highly upregulated in tubular cells of the nephron. The increased Cxcr4 expression in tubules correlated with their increased dedifferentiated state, leading to increased mRNA expression of platelet-derived growth factor (PDGF)-α, transforming growth factor (TGF)-β1, and concurrent loss of bone morphogenetic protein 7 (Bmp7). Ablation of tubular Cxcr4 attenuated UUO-mediated fibrotic responses, which correlated with a significant reduction in PDGF-α and TGF-β1 levels and preservation of Bmp7 expression after UUO. Furthermore, Cxcr4(+) immune cells infiltrated the obstructed kidney and further upregulate their Cxcr4 expression. Genetic ablation of Cxcr4 from macrophages was protective against UUO-induced fibrosis. There was also reduced total kidney TGF-β1, which correlated with reduced Smad activation and α-smooth muscle actin levels. We conclude that chronic high Cxcr4 expression in multiple effector cell types can contribute to the pathogenesis of renal fibrosis by altering their biological profile. This study uncovered a novel cross-talk between Cxcr4-TGF-β1 and Bmp7 pathways and may provide novel targets for interrupting the progression of fibrosis.
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Affiliation(s)
- Amy Yuan
- Department of Medicine, Section of Nephrology, Yale School of Medicine, New Haven, Connecticut
| | - Yashang Lee
- Department of Medicine, Section of Nephrology, Yale School of Medicine, New Haven, Connecticut
| | - Uimook Choi
- Laboratory of Host Defense, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Gilbert Moeckel
- Department of Pathology, Yale School of Medicine, New Haven, Connecticut; and
| | - Anil Karihaloo
- Department of Medicine, Section of Nephrology, Yale School of Medicine, New Haven, Connecticut
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20
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Meijerink H, Indrati AR, van Crevel R, Joosten I, Koenen H, van der Ven AJAM. The number of CCR5 expressing CD4+ T lymphocytes is lower in HIV-infected long-term non-progressors with viral control compared to normal progressors: a cross-sectional study. BMC Infect Dis 2014; 14:683. [PMID: 25495598 PMCID: PMC4271479 DOI: 10.1186/s12879-014-0683-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 12/04/2014] [Indexed: 01/09/2023] Open
Abstract
Background The HIV co-receptors CXCR4 and CCR5 play an important role in HIV infection and replication. Therefore we hypothesize that long-term non-progressors (LTNP) with viral control have lower expression of CCR5 and CXCR4 on CD4+ cells, specifically on memory T-lymphocytes since they are the primary target cells of HIV. Methods In this cross-sectional study, we included five HIV-infected LTNP with viral control (CD4 > 750 cell/μl & HIV < 50 copies for ≥2 years), thirteen HIV-infected and seven HIV-uninfected individuals at Radboud UMC Nijmegen, the Netherlands. We determined the CCR5 and CXCR4 expression among CD4+ and CD8+ lymphocyte subsets; memory (CD45RO+), naïve (CD45RA+) cells and regulatory T-cells (CD4+CD25highFoxP3+). In addition, CCR5∆32 polymorphism is related with disease progression and was therefore determined using polymerase chain reaction. Results The percentage of CCR5-expressing CD4+ cells of LTNP was comparable with healthy controls; whereas HIV-infected individuals showed more CCR5-expressing cells. This was observed in memory and naïve CD4+ cells, but not in regulatory T-cells. The mean fluorescence intensity of CCR5-expressing CD4+ cells was similar in all groups. All groups had comparable percentages of CXCR4-expressing cells. The mean fluorescence intensity of CXCR4-expressing cells was significantly higher in HIV-infected normally progressors in both memory and naïve CD4+ cells, but not in CD8+ cells. The CCR5∆32 polymorphism was not related to group. Conclusions We show that HIV affects -directly or indirectly- the expression of CCR5 in CD4+ T-lymphocytes; yet this effect is not seen in LTNP with viral control. Avoiding upregulation of CCR5 could be an important method via which LTNP counteracts the effects of HIV and suppresses viral replication. Exploring how LTNP suppress the upregulation of CCR5 could be an important step for discovering new therapeutics. Electronic supplementary material The online version of this article (doi:10.1186/s12879-014-0683-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hinta Meijerink
- Department of Internal Medicine, Radboud University Medical Center, Route 456, PO Box 910, 6500 HB, Nijmegen, The Netherlands.
| | - Agnes R Indrati
- Health Research Unit, Faculty of Medicine, Universitas Padjadjaran/Hasan Sadikin Hospital, Bandung, Indonesia.
| | - Reinout van Crevel
- Department of Internal Medicine, Radboud University Medical Center, Route 456, PO Box 910, 6500 HB, Nijmegen, The Netherlands.
| | - Irma Joosten
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Hans Koenen
- Laboratory of Medical Immunology, Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Andre J A M van der Ven
- Department of Internal Medicine, Radboud University Medical Center, Route 456, PO Box 910, 6500 HB, Nijmegen, The Netherlands.
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The evolution of HIV-1 interactions with coreceptors and mannose C-type lectin receptors. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2014; 129:109-40. [PMID: 25595802 DOI: 10.1016/bs.pmbts.2014.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The phenotype of human immunodeficiency virus type 1 (HIV-1) commonly evolves between and within infected individuals, at virus transmission, and during disease progression. This evolution includes altered interactions between the virus and its coreceptors, i.e., chemokine receptors, as well as mannose C-type lectin receptors (CLRs). Transmitted/founder viruses are predominantly restricted to CCR5, whereas the subsequent intrapatient evolution of HIV-1 coreceptor use during progressive disease can be subdivided into two distinct pathways. Accordingly, the CCR5-restricted virus population is either gradually replaced by virus variants able to use CXCR4 or evolves toward an altered, more flexible use of CCR5. Despite a strong dependency on these coreceptors for host cell entry, HIV-1 also interacts with other cell surface molecules during target cell attachment, including the CLRs. The virus interaction with the CLRs may result either in the efficient transfer of virus to CD4(+) T cells or in the degradation of the virus in endosomal compartments. The determinants of the diverse outcomes depend on which CLR is engaged and also on the glycan makeup of the envelope glycoproteins, which may evolve with the strength of the immune pressure during the disease course. With the current clinical introduction of CCR5 antagonists and the development of additional entry inhibitors, knowledge on the evolution and baseline characteristics of HIV-1 interactions with coreceptor and CLR interactions may play important roles for individualized and optimized treatment strategies. This review summarizes our current understanding of the evolution of HIV-1 interactions with these receptors.
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Sisto M, Lisi S. New Insights Into ADAMs Regulation of the GRO-α/CXCR2 System: Focus on Sjögren's Syndrome. Int Rev Immunol 2014; 34:486-99. [DOI: 10.3109/08830185.2014.975892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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23
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Liao YX, Zhou CH, Zeng H, Zuo DQ, Wang ZY, Yin F, Hua YQ, Cai ZD. The role of the CXCL12-CXCR4/CXCR7 axis in the progression and metastasis of bone sarcomas (Review). Int J Mol Med 2013; 32:1239-46. [PMID: 24127013 DOI: 10.3892/ijmm.2013.1521] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Accepted: 09/25/2013] [Indexed: 11/06/2022] Open
Abstract
Bone sarcomas, which comprise less than 1% of all human malignancies, are a group of relatively rare mesenchymal-derived tumors. They are mainly composed of osteosarcoma, chondrosarcoma and Ewing's sarcoma. In spite of advances in adjuvant chemotherapy and wide surgical resection, prognosis remains poor due to the high propensity for lung metastasis, which is the leading cause of mortality in patients with bone sarcomas. Chemokines are a superfamily of small pro-inflammatory chemoattractant cytokines which can bind to specific G protein-coupled seven-span transmembrane receptors. Chemokine 12 (CXCL12), also designated as stromal cell-derived factor-1 (SDF-1), is able to bind to its cognate receptors, chemokine receptor 4 (CXCR4) and chemokine receptor 7 (CXCR7), with high affinity. The binding of CXCL12 to CXCR4/CXCR7 stimulates the activation of several downstream signaling pathways that regulate tumor progression and metastasis. In this review, the structure and function of CXCL12 and its receptors, CXCR4 and CXCR7, as well as many factors affecting their expression are discussed. Phosphoinositide 3-kinase (PI3K) and mitogen-activated protein kinase (MAPK) pathways are the two most important downstream pathways regulated by the CXCL12-CXCR4/CXCR7 interaction. CXCR4 expression in bone sarcomas, including tumor cells and samples and the correlation between CXCR4/CXCR7 expression and the survival of patients with bone sarcomas are also discussed. In addition, we review the involvement of the CXCL12‑CXCR4/CXCR7 axis in the growth and metastasis of bone sarcomas and the targeting of this axis in preclinical studies.
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Affiliation(s)
- Yu-Xin Liao
- Shanghai Bone Cancer Institute, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
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Lombardi L, Tavano F, Morelli F, Latiano TP, Di Sebastiano P, Maiello E. Chemokine receptor CXCR4: role in gastrointestinal cancer. Crit Rev Oncol Hematol 2013; 88:696-705. [PMID: 24120239 DOI: 10.1016/j.critrevonc.2013.08.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 07/29/2013] [Accepted: 08/14/2013] [Indexed: 01/29/2023] Open
Abstract
Chemokines (CK)s, small proinflammatory chemoattractant cytokines that bind to specific G-protein coupled seven-span transmembrane receptors, are major regulators of cell trafficking and adhesion. The CXCL12 [stromal cell-derived factor-1 (SDF-1)] binds primarily to CXC receptor 4 (CXCR4; CD184). The binding of CXCL12 to CXCR4 induces intracellular signaling through several divergent pathways initiating signals related to chemotaxis, cell survival and/or proliferation, increase in intracellular calcium, and gene transcription. CXCR4 is expressed on multiple cell types including lymphocytes, hematopoietic stem cells, endothelial and epithelial cells, and cancer cells. One of the most intriguing and perhaps important roles that CKs and the CK receptors have is in regulating metastasis. Here, CK receptors may potentially facilitate tumor dissemination at each of the key steps of metastasis, including adherence of tumor cells to endothelium, extravasation from blood vessels, metastatic colonization, angiogenesis, proliferation, and protection from the host response via activation of key survival pathways such as ERK/MAPK, PI-3K/Akt/mTOR, or Jak/STAT, etc. In addition, it is increasingly recognized that CKs play an important role in facilitating communication between cancer cells and non-neoplatic cells in the tumor microenvironment (TME), including endothelial cells and fibroblasts, promoting the infiltration, activation of neutrophils, and tumor-associated macrophages within the TME. In this review, we mainly focus on the roles of chemokines CXCL12 and its cognate receptors CXCR4 as they pertain to cancer progression. In particular, we summarizes our current understanding regarding the contribution of CXCR4 and SDF-1 to gastrointestinal tumor behavior and its role in local progression, dissemination, and immune evasion of tumor cells. Also, describes recent therapeutic approaches that target these receptors or their ligands.
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Affiliation(s)
- Lucia Lombardi
- Department of Oncology, IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo (FG), Italy.
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Abstract
The HIV/AIDS field is gaining momentum in the goal of finding a functional cure for HIV infection by utilizing strategies that specifically reactivate the latent viral reservoir in combination with the HAART regimen to prevent further viral spread. Small-molecule inhibitors such as histone deacetylase (HDAC) and bromodomain and extraterminal (BET) inhibitors can successfully activate HIV transcription and reverse viral latency in clonal cell lines. However, in resting CD4+ T cells, thought to be the principal physiological reservoir of latent HIV, their effect in reactivating the viral reservoir is more variable. It is possible that the discrepant responsiveness of quiescent primary CD4+ T cells to HDAC and BET inhibitors could be attributed to the limiting levels of P-TEFb, a key viral transcription host cofactor, in these cells. In this review, we discuss the role of P-TEFb and the necessity for its mobilization in stimulating viral reactivation from latency upon treatment with HDAC and BET inhibitors.
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Affiliation(s)
- Sona Budhiraja
- Department of Molecular Microbiology & Virology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Andrew P Rice
- Department of Molecular Microbiology & Virology, Baylor College of Medicine, Houston, TX 77030, USA
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Ding D, Qu X, Li L, Zhou X, Liu S, Lin S, Wang P, Liu S, Kong C, Wang X, Liu L, Zhu H. Involvement of histone methyltransferase GLP in HIV-1 latency through catalysis of H3K9 dimethylation. Virology 2013; 440:182-9. [DOI: 10.1016/j.virol.2013.02.022] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 12/27/2012] [Accepted: 02/20/2013] [Indexed: 12/31/2022]
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27
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Zhang M, Liu HX, Teng XD, Wang HB, Cui J, Jia SS, Gu XY, Li ZG. The differences in CXCR4 protein expression are significant for the five molecular subtypes of breast cancer. Ultrastruct Pathol 2013; 36:381-6. [PMID: 23216236 DOI: 10.3109/01913123.2012.728687] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim was to investigate the expression of the CXCR4 protein in five molecular subtypes of breast cancer. The authors randomly selected the breast cancer paraffin-embedded specimens of the Affiliated Third Hospital of Harbin Medical University between 2007 and 2009. Details are as follows: basal-like subtype-ER (-), PR (-), C-erbB-2 (-), CK5/6 (+), n = 36; normal breast subtype-ER (-), PR (-), C-erbB-2 (-), CK5/6(-), n = 40; luminal A subtype-ER/PR (+), C-erbB-2 (-), n = 38; luminal B subtype-ER/PR (+), C-erbB-2 (+), n = 60; C-erbB-2 (+) subtype-ER (-), PR (-), C-erbB-2 (+), n = 58. Using the immunohistochemistry method, the authors detected the expression of the CXCR4 protein in the five subtypes. The CXCR4 protein expression in the basal-like subtype was the highest, and that in the luminal A subtype was the lowest. In terms of five molecular subtypes of breast cancer, the differences in CXCR4 protein expression were significant (p < .001). In terms of C-erbB-2 expression, tumor stage, and lymph node metastasis of breast cancer, the differences in CXCR4 protein expression were significant (p < .01).
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Affiliation(s)
- Ming Zhang
- Department of Breast Surgery, Affiliated Third Hospital of Harbin Medical University, Harbin, China
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Huang J, Li Z, Yao X, Li Y, Reng X, Li J, Wang W, Gao J, Wang C, Tankersley CG, Huang K. Altered Th1/Th2 commitment contributes to lung senescence in CXCR3-deficient mice. Exp Gerontol 2013; 48:717-26. [PMID: 23583952 DOI: 10.1016/j.exger.2013.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 03/28/2013] [Accepted: 04/03/2013] [Indexed: 01/08/2023]
Abstract
Aging is an inevitable process associated with immune imbalance, which is characterized by a progressive functional decline in major organs, including lung. However, effects of altered Th1/Th2 commitment on lung senescence are largely unknown. To examine effects of altered Th1/Th2 balance on lung aging, we measured proportions of Th1 and Th2 cells and expression of cytokines, chemokines, collagen deposition and other relevant physiological and pathological parameters in 2- and 20-months-old (mo) CXCR3-deficient (CXCR3(-/-)) C57BL/6J mice compared with wild-type (WT) mice. There was a significant weight-loss observed in 20-mo CXCR3(-/-) mice compared with the same aged WT group. Although lung function and structure changed with age in both groups, central airway resistance (Rn), tissue elastance (H) and damping (G) were significantly lower in 20-mo CXCR3(-/-) mice than those of WT mice. In contrast, the whole lung volume (V(L)), the mean linear intercept length of alveolar (L(m)), and the total lung collagen content were significantly elevated in 20-mo CXCR3(-/-) mice. With aging, the lungs of WT mice had typical Th1-type status (increased population of Th1 cells and concentrations of cytokine IFN-γ and CXCR3 ligands) while CXCR3(-/-) mice showed Th2-type polarization (decreased proportion of Th1 cells and concentrations of CXCR3 ligands but increased level of IL-4). Our data suggest that Immunosenescence is associated with lung aging, and that altered Th1/Th2 imbalance favors Th2 predominance in CXCR3(-/-) mice, which contributes to the process of accelerated lung aging in this model.
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Affiliation(s)
- Junmin Huang
- Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, PR China
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29
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A review on CXCR4/CXCL12 axis in oncology: No place to hide. Eur J Cancer 2013; 49:219-30. [DOI: 10.1016/j.ejca.2012.05.005] [Citation(s) in RCA: 444] [Impact Index Per Article: 40.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 04/27/2012] [Accepted: 05/02/2012] [Indexed: 12/14/2022]
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Yang W, Wang C, Lin Y, Liu Q, Yu LX, Tang L, Yan HX, Fu J, Chen Y, Zhang HL, Tang L, Zheng LY, He YQ, Li YQ, Wu FQ, Zou SS, Li Z, Wu MC, Feng GS, Wang HY. OV6⁺ tumor-initiating cells contribute to tumor progression and invasion in human hepatocellular carcinoma. J Hepatol 2012; 57:613-20. [PMID: 22612999 DOI: 10.1016/j.jhep.2012.04.024] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2011] [Revised: 04/02/2012] [Accepted: 04/19/2012] [Indexed: 12/23/2022]
Abstract
BACKGROUND & AIMS Accumulating evidence suggests the involvement of tumor-initiating cells (T-ICs) in cancer genesis, but whether liver T-ICs contribute to HCC invasion and metastasis remains unclear. METHODS OV6(+) T-ICs were isolated from SMMC7721 and HuH7 cell lines by magnetic sorting. Characteristics of T-ICs were assessed by in vitro and mouse xenograft assays. Expression of OV6 was determined by immunostaining in specimens from 218 HCC patients, and Kaplan-Meier survival analysis was used to determine the correlation of OV6 expression with prognosis. RESULTS OV6(+) T-ICs isolated from HCC cell lines not only possess a higher capacity to form tumor spheroids in vitro, but also had a greater potential to form tumors when implanted in non-obese diabetic/severe combined immunodeficient mice, suggesting their elevated self-renewal capacity and tumorigenicity. Moreover, OV6(+) T-ICs exhibited more invasive and metastatic potentials both in vitro and in vivo. Patients with more OV6(+) tumor cells were associated with aggressive clinicopathologic features and poor prognosis. CXCR4 is expressed at higher levels in OV6(+) cells. Recombinant stromal cell-derived factor-1 (SDF-1) treatment expanded the OV6(+) HCC T-ICs population, by sustaining the stem cell property of OV6(+) cells. The SDF-1 effect was blocked by a specific CXCR4 inhibitor, AMD3100, or transfection of siRNA targeting CXCR4. CONCLUSIONS OV6(+) HCC cells may represent a subpopulation of T-ICs with augmented invasion and metastasis potential, which contribute to progression and metastasis of HCC. The SDF-1/CXCR4 axis also provides therapeutic targets for elimination of liver T-ICs.
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Affiliation(s)
- Wen Yang
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University, Shanghai 200438, PR China
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Ertugrul AS, Sahin H, Dikilitas A, Alpaslan N, Bozoglan A. Comparison of CCL28, interleukin-8, interleukin-1β and tumor necrosis factor-alpha in subjects with gingivitis, chronic periodontitis and generalized aggressive periodontitis. J Periodontal Res 2012; 48:44-51. [PMID: 22812409 DOI: 10.1111/j.1600-0765.2012.01500.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVE Cytokines produced by various cells are strong local mediators of inflammation. Mucosa-associated epithelial chemokine (CCL28), interleukin-8 (IL-8), interleukin-1beta (IL-1β) and tumor necrosis factor-alpha (TNF-α) are major cytokines that play important roles in the periodontal inflammatory process. In this study we aimed to compare the levels of CCL28, IL-8, IL-1β and TNF-α in the gingival crevicular fluid of both periodontally healthy subjects and in subjects diagnosed with gingivitis, chronic periodontitis and generalized aggressive periodontitis. MATERIAL AND METHODS A total of 84 subjects participated in the study: 21 subjects had gingivitis, 21 subjects had chronic periodontitis, 21 subjects had generalized aggressive periodontitis and 21 were periodontally healthy. The levels of CCL28, IL-8, IL-1β and TNF-α were analyzed using enzyme-linked immune sorbent assay (ELISA). RESULTS The total levels of CCL28 and IL-8 in the gingival crevicular fluid of the generalized aggressive periodontitis group (324.74 ± 42.62 pg/30 s, 487.62 ± 49.21 pg/30 s) were significantly higher than those of the chronic periodontitis group (268.81 ± 28.64 pg/30 s, 423.65 ± 35.24 pg/30 s), the gingivitis group (146.35 ± 17.46 pg/30 s, 310.24 ± 48.20 pg/30 s) and the periodontally healthy group (92.46 ± 22.04 pg/30 s, 148.41 ± 24.64 pg/30 s). Similarly, the total levels of IL-1β and TNF-α in the generalized aggressive periodontitis group (110.23 ± 9.20 pg/30 s, 1284.46 ± 86.32 pg/30 s) were significantly higher than those in the chronic periodontitis group (423.65 ± 35.24 pg/30 s, 82.64 ± 9.12 pg/30 s), the gingivitis group (52.10 ± 7.15 pg/30 s, 824.24 ± 44.68 pg/30 s) and the periodontally healthy group (36.44 ± 8.86 pg/30 s, 628.26 ± 34.61 pg/30 s). CONCLUSION CCL28, IL-8, IL-1β and TNF-α may play key roles in the host response to inflammation in periodontal diseases. As the severity of periodontal diseases increases, destruction of periodontal tissues also increases. Inflammation is one among many factors that trigger periodontal tissue destruction. Identification of the mediators that influence the development and progression of inflammation in periodontal diseases may be very important in understanding the prognoses of periodontal diseases.
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Affiliation(s)
- A S Ertugrul
- Department of Periodontology, Faculty of Dentistry, Yuzuncu Yil University, Van, Turkey.
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Abstract
The introduction of highly active antiretroviral therapy (HAART) has been an important breakthrough in the treatment of HIV-1 infection and has also a powerful tool to upset the equilibrium of viral production and HIV-1 pathogenesis. Despite the advent of potent combinations of this therapy, the long-lived HIV-1 reservoirs like cells from monocyte-macrophage lineage and resting memory CD4+ T cells which are established early during primary infection constitute a major obstacle to virus eradication. Further HAART interruption leads to immediate rebound viremia from latent reservoirs. This paper focuses on the essentials of the molecular mechanisms for the establishment of HIV-1 latency with special concern to present and future possible treatment strategies to completely purge and target viral persistence in the reservoirs.
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Abstract
Oxidative stress and the accumulation of reactive oxygen species (ROS) play a role in cancer cells developing an advanced, phenotypic signature that associates with metastasis and progression. Increased ROS concentrations are involved in promoting cancer development and metastasis by inducing expression of oncogenes, suppressing activity of anti-survival molecules and by activating various cell survival and proliferation signaling pathways. Oxidative stress is higher in the epithelium of cancer patients than patients without the disease, and antioxidant trials are currently being explored as a therapeutic option. However, studies have shown that ROS increases expression of CXCR4 in cancer and immune cells. CXCR4 expression in tumors strongly correlates to metastasis and poor prognosis. Herein, we discuss an emerging relationship between ROS and CXCR4 in cancer cells.
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Mitsui H, Shibata K, Suzuki S, Umezu T, Mizuno M, Kajiyama H, Kikkawa F. Functional interaction between peritoneal mesothelial cells and stem cells of ovarian yolk sac tumor (SC-OYST) in peritoneal dissemination. Gynecol Oncol 2012; 124:303-10. [DOI: 10.1016/j.ygyno.2011.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 10/05/2011] [Accepted: 10/06/2011] [Indexed: 11/27/2022]
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35
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Knight JC, Wuest FR. Nuclear (PET/SPECT) and optical imaging probes targeting the CXCR4 chemokine receptor. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md20117h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Fenyö EM, Esbjörnsson J, Medstrand P, Jansson M. Human immunodeficiency virus type 1 biological variation and coreceptor use: from concept to clinical significance. J Intern Med 2011; 270:520-31. [PMID: 21929694 DOI: 10.1111/j.1365-2796.2011.02455.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
There is ample evidence for intra-patient evolution of the human immunodeficiency virus type 1 (HIV-1) biological phenotype during the pathogenic process. Evolution often involves switch of coreceptor use from CCR5 to CXCR4, but change to more flexible use of CCR5 occurs over time even in patients with maintained CCR5 use. The increasing use of entry inhibitors in the clinic, often specific for one or the other HIV-1 coreceptor or with different binding properties to CCR5, calls for virus testing in patients prior to treatment initiation. Cell lines expressing CCR5/CXCR4 chimeric receptors are tools for testing viruses for mode of CCR5 use. It is conceivable that small-molecule entry inhibitors that differentially bind to CCR5 can be matched for best effect against HIV-1 with different modes of CCR5 use, thereby allowing an individualized drug choice specifically tailored for each patient.
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Affiliation(s)
- E M Fenyö
- Department of Laboratory Medicine, Division of Medical Microbiology, Lund, Sweden.
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37
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Selvaraj P, Alagarasu K, Singh B. Stromal cell-derived factor-1 (SDF-1/CXCL12) gene polymorphisms in pulmonary tuberculosis patients of south India. Int J Immunogenet 2011; 39:26-31. [DOI: 10.1111/j.1744-313x.2011.01059.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Beider K, Begin M, Abraham M, Wald H, Weiss ID, Wald O, Pikarsky E, Zeira E, Eizenberg O, Galun E, Hardan I, Engelhard D, Nagler A, Peled A. CXCR4 antagonist 4F-benzoyl-TN14003 inhibits leukemia and multiple myeloma tumor growth. Exp Hematol 2010; 39:282-92. [PMID: 21138752 DOI: 10.1016/j.exphem.2010.11.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2010] [Revised: 11/07/2010] [Accepted: 11/30/2010] [Indexed: 12/21/2022]
Abstract
OBJECTIVE The chemokine receptor CXCR4 and its ligand CXCL12 are involved in the progression and dissemination of a diverse number of solid and hematological malignancies. Binding CXCL12 to CXCR4 activates a variety of intracellular signal transduction pathways that regulate cell chemotaxis, adhesion, survival, proliferation, and apoptosis. MATERIALS AND METHODS Here, we demonstrate that the CXCR4 antagonist, 4F-benzoyl-TN14003 (BKT140), but not AMD3100, exhibits a CXCR4-dependent preferential cytotoxicity toward malignant cells of hematopoietic origin. BKT140 significantly and preferentially stimulated multiple myeloma apoptotic cell death. BKT140 treatment induced morphological changes, phosphatidylserine externalization, decreased mitochondrial membrane potential, caspase-3 activation, sub-G1 arrest, and DNA double-stranded breaks. RESULTS In vivo, subcutaneous injections of BKT140 significantly reduced, in a dose-dependent manner, the growth of human acute myeloid leukemia and multiple myeloma xenografts. Tumors from animals treated with BKT140 were smaller in size and weights, had larger necrotic areas and high apoptotic scores. CONCLUSIONS Taken together, these results suggest a potential therapeutic use for BKT140 in multiple myeloma and leukemia patients.
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Affiliation(s)
- Katia Beider
- Goldyne Savad Institute of Gene Therapy, Hadassah Hebrew University Hospital, Jerusalem, Israel
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Burger JA. Chemokines and chemokine receptors in chronic lymphocytic leukemia (CLL): from understanding the basics towards therapeutic targeting. Semin Cancer Biol 2010; 20:424-30. [PMID: 20883788 DOI: 10.1016/j.semcancer.2010.09.005] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 09/16/2010] [Accepted: 09/21/2010] [Indexed: 02/03/2023]
Abstract
Chemokines and their receptors organize the recruitment and positioning of cells at each stage of the immune response, a system critically dependent upon coordination to get the right cells to the right place at the right time. Chemokine receptors expressed on CLL B cells are thought to function in a similar fashion, regulating the trafficking of the leukemia cells between blood, lymphoid organs, and the bone marrow, and within sub compartments within these tissues, in concert with adhesion molecules and other guidance cues. CLL cells not only respond to chemokines secreted in the microenvironment, the leukemia cells also secrete chemokines in response to external signals, such as B cell receptor engagement. These CLL cell-derived chemokines facilitate interactions between CLL cells, T cells, and other immune cells that shape the CLL microenvironment. CXCR4, the most prominent chemokine receptor in CLL, is now targeted in a first clinical trial, emphasizing that chemokines and their receptors have become a highly dynamic translational research field.
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Affiliation(s)
- Jan A Burger
- Department of Leukemia, The University of Texas M.D. Anderson Cancer Center, Houston, TX 77230, USA.
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Kim M, Koh YJ, Kim KE, Koh BI, Nam DH, Alitalo K, Kim I, Koh GY. CXCR4 signaling regulates metastasis of chemoresistant melanoma cells by a lymphatic metastatic niche. Cancer Res 2010; 70:10411-21. [PMID: 21056990 DOI: 10.1158/0008-5472.can-10-2591] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Highly metastatic and chemotherapy-resistant properties of malignant melanomas stand as challenging barriers to successful treatment; yet, the mechanisms responsible for their aggressive characteristics are not fully defined. We show that a distinct population expressing CD133 (Prominin-1), which is highly enriched after administration of a chemotherapeutic drug, dacarbazine, has enhanced metastatic potential in vivo. CD133(+) tumor cells are located close to tumor-associated lymphatic vessels in metastatic organs such as the regional lymph nodes and lung. Lymphatic endothelial cells promote the migratory activity of a CD133(+) subset to target organs and regulation of lymphatic growth efficiently modulates the metastasis of CD133(+) tumor cells. We found that lymphatic vessels in metastatic tissues stimulate chemokine receptor 4 (CXCR4)(+)/CD133(+) cell metastasis to target organs by secretion of stromal cell-derived factor-1 (SDF-1). The CXCR4(+)/CD133(+) cells exhibited higher metastatic activity compared with CXCR4(-)/CD133(+) cells and, importantly, blockade of CXCR4 coupled with dacarbazine efficiently inhibited both tumor growth and metastasis; dacarbazine alone could not attenuate tumor metastasis. The current study demonstrates a previously unidentified role of the lymphatic microenvironment in facilitating metastasis of chemoresistant melanoma cells via a specific chemotactic axis, SDF-1/CXCR4. Our findings suggest that targeting the SDF-1/CXCR4 axis in addition to dacarbazine treatment could therapeutically block chemoresistant CD133(+) cell metastasis toward a lymphatic metastatic niche.
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Affiliation(s)
- Minah Kim
- National Research Laboratory of Vascular Biology and Stem Cells, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
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Abstract
The chemokine receptor CXCR4 belongs to the large superfamily of G protein-coupled receptors and has been identified to play a crucial role in a number of biological processes, including the trafficking and homeostasis of immune cells such as T lymphocytes. CXCR4 has also been found to be a prognostic marker in various types of cancer, including leukemia and breast cancer, and recent evidence has highlighted the role of CXCR4 in prostate cancer. Furthermore, CXCR4 expression is upregulated in cancer metastasis, leading to enhanced signaling. These observations suggest that CXCR4 is important for the progression of cancer. The CXCR4-CXCL12 (stromal cell-derived factor 1 (SDF-1)) axis has additionally been identified to have a role in normal stem cell homing. Interestingly, cancer stem cells also express CXCR4, indicating that the CXCR4-SDF-1 axis may direct the trafficking and metastasis of these cells to organs that express high levels of SDF-1, such as the lymph nodes, lungs, liver, and bone. This review focuses on the current knowledge of CXCR4 regulation and how deregulation of this protein may contribute to the progression of cancer.
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Affiliation(s)
- Bungo Furusato
- Center for Prostate Disease Research, Department of Surgery, Uniformed Service University of the Health Sciences, 1530 E. Jefferson Street, Rockville, MD 20852, USA
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Suzuki S, Terauchi M, Umezu T, Kajiyama H, Shibata K, Nawa A, Kikkawa F. Identification and characterization of cancer stem cells in ovarian yolk sac tumors. Cancer Sci 2010; 101:2179-85. [PMID: 20804503 PMCID: PMC11159821 DOI: 10.1111/j.1349-7006.2010.01672.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Recent evidence supports the cancer stem cell theory, that is, that malignant tumors arise from cells termed cancer stem cells or tumor-initiating cells that have the ability to self-renew and are responsible for maintaining the tumor. Cells with marked tumor-initiating capacity have recently been identified in a number of solid tumors. CD133 (PROM1, human prominin-1) has been used as a marker to detect stem cells (progenitor cells) and cancer stem cells (tumor-initiating cells) in various tissues. Ovarian yolk sac tumors (YSTs) are rare and highly malignant. The present study was designed to evaluate the tumor-forming ability of CD133(+) cells in ovarian YST cell lines and to examine the characteristics of CD133(+) cells, such as cell growth and invasiveness. Our data suggest ovarian YST to be maintained by a rare fraction of cancer stem-like cells that express the cell surface marker CD133.
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Affiliation(s)
- Shiro Suzuki
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan
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Chen LS, Balakrishnan K, Gandhi V. Inflammation and survival pathways: chronic lymphocytic leukemia as a model system. Biochem Pharmacol 2010; 80:1936-45. [PMID: 20696142 DOI: 10.1016/j.bcp.2010.07.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Revised: 07/22/2010] [Accepted: 07/27/2010] [Indexed: 10/19/2022]
Abstract
A primary response to inflammation is an increased survival of the target cell. Several pathways have been identified that promote maintenance of the cell. The principal mechanism for the extended survival is through induction of anti-apoptotic Bcl-2 family proteins. Bcl-2 was the founding member of this family with five additional members, Bcl-X(L), Bcl-W, Bcl-B, Bfl-1, and Mcl-1, discovered mostly in hematological malignancies. Another mechanism that could add to cell survival is the Pim kinase pathway. This family of enzymes is associated with Myc-driven transcription, cell cycle regulation, degradation of pro-apoptotic proteins, and protein translation. Chronic lymphocytic leukemia serves as an optimal model to understand the mechanism by which these two protein families provide survival advantage to cells. In addition, since this malignancy is known to be maintained by microenvironment milieu, this further adds advantage to investigate mechanisms by which these pro-survival proteins are induced in the presence of stromal support. Multiple mechanisms exists that result in increase in transcript and protein level of anti-apoptotic Bcl-2 family members. Following these inductions, post-translational modifications occur resulting in increased stability of pro-survival proteins, while Pim-mediated phosphorylation inhibits pro-apoptotic protein activity. Furthermore, there is a cross-talk between these two (Bcl-2 family proteins and Pim family proteins) pathways that co-operate with each other for CLL cell survival and maintenance. Vigorous efforts are being made to create small molecules that affect these proteins directly or indirectly. Several of these pharmacological inhibitors are in early clinical trials for patients with hematological malignancies.
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Affiliation(s)
- Lisa S Chen
- Department of Experimental Therapeutics, University of Texas M. D. Anderson Cancer Center, Houston, TX 77030-4095, USA
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Role of chemokine network in the development and progression of ovarian cancer: a potential novel pharmacological target. JOURNAL OF ONCOLOGY 2009; 2010:426956. [PMID: 20049170 PMCID: PMC2798669 DOI: 10.1155/2010/426956] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Accepted: 09/28/2009] [Indexed: 12/26/2022]
Abstract
Ovarian cancer is the most common type of gynecologic malignancy. Despite advances in surgery and chemotherapy, the survival rate is still low since most ovarian cancers relapse and become drug-resistant. Chemokines are small chemoattractant peptides mainly involved in the immune responses. More recently, chemokines were also demonstrated to regulate extra-immunological functions. It was shown that the chemokine network plays crucial functions in the tumorigenesis in several tissues. In particular the imbalanced or aberrant expression of CXCL12 and its receptor CXCR4 strongly affects cancer cell proliferation, recruitment of immunosuppressive cells, neovascularization, and metastasization. In the last years, several molecules able to target CXCR4 or CXCL12 have been developed to interfere with tumor growth, including pharmacological inhibitors, antagonists, and specific antibodies. This chemokine ligand/receptor pair was also proposed to represent an innovative therapeutic target for the treatment of ovarian cancer. Thus, a thorough understanding of ovarian cancer biology, and how chemokines may control these different biological activities might lead to the development of more effective therapies. This paper will focus on the current biology of CXCL12/CXCR4 axis in the context of understanding their potential role in ovarian cancer development.
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45
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Montero J, Chaves-Pozo E, Cuesta A, Tafalla C. Chemokine transcription in rainbow trout (Oncorhynchus mykiss) is differently modulated in response to viral hemorrhagic septicaemia virus (VHSV) or infectious pancreatic necrosis virus (IPNV). FISH & SHELLFISH IMMUNOLOGY 2009; 27:661-669. [PMID: 19699800 DOI: 10.1016/j.fsi.2009.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 07/21/2009] [Accepted: 08/16/2009] [Indexed: 05/28/2023]
Abstract
Chemokines not only act as chemoattractants for immune cells, but also exert immunomodulatory actions, thus modulating the immune functions of their target cells. In rainbow trout (Oncorhynchus mykiss), twenty-four chemokines have been identified to date. Even though their sequences have been reported, their biological role has been scarcely elucidated and the role that these chemokines have on the antiviral response in fish has been poorly studied. In this sense, in the current work, we have determined the levels of expression of several of these rainbow trout chemokines (CXCd, gammaIP, CK1, CK3, CK5B, CK6, CK7A, CK9 and CK12) in head kidney and spleen during the course of a viral infection using two different viruses, viral hemorrhagic septicaemia virus (VHSV) and infectious pancreatic necrosis virus (IPNV), comparing them to the levels induced by poly I:C. We also determined the effects that the two viruses and poly I:C provoked on the levels of expression of these chemokines in vitro in head kidney leucocytes. Overall, VHSV was capable of modulating gammaIP, CXCd, CK1, CK3, CK5B, CK6 and CK12, while IPNV induced a very different chemokine profile and affected CK1, CK5B, CK6, CK7A, CK9 and CK12. On the other hand, a viral mimic such as poly I:C was capable of up-regulating gammaIP, CXCd, CK1, CK3, CK5B, CK7A and CK12. As more information becomes available concerning the immune role and target cells that these chemokines have on rainbow trout, we would be able to better interpret the importance of these differences in the pathogenicity of these two viruses.
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Affiliation(s)
- Jana Montero
- Centro de Investigación en Sanidad Animal (CISA-INIA), Valdeolmos, 28130 Madrid, Spain
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46
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Coiras M, López-Huertas MR, Pérez-Olmeda M, Alcamí J. Understanding HIV-1 latency provides clues for the eradication of long-term reservoirs. Nat Rev Microbiol 2009; 7:798-812. [PMID: 19834480 DOI: 10.1038/nrmicro2223] [Citation(s) in RCA: 216] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
HIV-1 can infect both activated and resting, non-dividing cells, following which the viral genome can be permanently integrated into a host cell chromosome. Latent HIV-1 reservoirs are established early during primary infection and constitute a major barrier to eradication, even in the presence of highly active antiretroviral therapy. This Review analyses the molecular mechanisms that are necessary for the establishment of HIV-1 latency and their relationships with different cellular and anatomical reservoirs, and discusses the current treatment strategies for targeting viral persistence in reservoirs, their main limitations and future perspectives.
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Affiliation(s)
- Mayte Coiras
- AIDS Immunopathology Unit, National Centre of Microbiology, Instituto de Salud Carlos III, 28220 Majadahonda, Madrid, Spain.
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Shimizu K, Minami M, Shubiki R, Lopez-Ilasaca M, MacFarlane L, Asami Y, Li Y, Mitchell RN, Libby P. CC chemokine receptor-1 activates intimal smooth muscle-like cells in graft arterial disease. Circulation 2009; 120:1800-13. [PMID: 19841301 PMCID: PMC2996873 DOI: 10.1161/circulationaha.109.859595] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Graft arterial disease (GAD) limits long-term solid-organ allograft survival. The thickened intima in GAD contains smooth muscle-like cells (SMLCs), leukocytes, and extracellular matrix. The intimal SMLCs in mouse GAD lesions differ from medial smooth muscle cells in their function and phenotype. Although intimal SMLCs may originate by migration and modulation of donor medial cells or by recruitment of host-derived precursors, the mechanisms that underlie their localization within grafts and the factors that drive these processes remain unclear. METHODS AND RESULTS This study of aortic transplantation in mice demonstrated an important function for chemokines beyond their traditional role in leukocyte recruitment and activation. Intimal SMLCs, but not medial smooth muscle cells, express functional CC chemokine receptor-1 (CCR1) and respond to RANTES by increased migration and proliferation. Although RANTES infusion in vivo promoted inflammatory cell accumulation in the adventitia of aortic allografts of wild-type and CCR1-deficient recipients, it increased GAD intimal thickening with SMLC proliferation in only the wild-type hosts. Aortic allografts transplanted into CCR1-deficient mice after wild-type bone marrow transplantation did not develop intimal lesions, which indicates that CCR1-bearing inflammatory cells do not contribute to intimal lesion formation. Moreover, RANTES induced SMLC proliferation in vitro but did not promote medial smooth muscle cell growth. Blockade of CCR5 attenuated RANTES-induced T-cell and monocyte/macrophage proliferation but did not affect RANTES-induced SMLC proliferation, consistent with a larger role of CCR1-binding chemokines in SMLC migration and proliferation and GAD development. CONCLUSIONS These studies provide a novel mechanistic insight into the formation of vascular intimal hyperplasia and suggest a novel therapeutic strategy for preventing allograft arteriopathy.
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Affiliation(s)
- Koichi Shimizu
- Donald W. Reynolds Cardiovascular Clinical Research Center, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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48
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Alcamí J. [The HIV replication cycle. Established therapeutic targets and potential targets]. Enferm Infecc Microbiol Clin 2009; 26 Suppl 12:3-10. [PMID: 19572419 DOI: 10.1016/s0213-005x(08)76566-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Research carried out on human immunodeficiency virus (HIV) infection illustrates the speed in the transfer of knowledge obtained from basic research to the treatment of patients. Due to studying the viral life cycle and structure and function of HIV proteins, there are currently more than 20 drugs available to treat infected patients. In this article a review is carried out on the biological cycle of HIV, highlighting those steps that represent preferential targets for pharmacological intervention. In the second part of the article, the characteristics of the main antiretroviral families that form the basis of classic antiretroviral treatment are summarised as well as reviewing the recently introduced drugs which are directed at new targets. Finally, an assessment is made of the new prototypes that are in the pre-clinical development phase and which will strengthen the future therapeutic arsenal against HIV infection.
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Affiliation(s)
- José Alcamí
- Unidad de Inmunopatología del Sida, Instituto de Salud Carlos III, Madrid, España.
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Burger JA, Stewart DJ. CXCR4 chemokine receptor antagonists: perspectives in SCLC. Expert Opin Investig Drugs 2009; 18:481-90. [PMID: 19335276 DOI: 10.1517/13543780902804249] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Small-cell lung cancer (SCLC) is a particularly aggressive form of lung cancer characterized by early and widespread metastases and the ability to rapidly develop resistance against chemotherapeutic agents. Tumor cell migration and metastasis share many similarities with leukocyte trafficking, which is critically regulated by chemokine receptors and adhesion molecules. SCLC cells express high levels of CXCR4 (CD184), a seven-transmembrane G-protein-coupled chemokine receptor. Stromal cells within the bone marrow microenvironment and at extramedullary sites constitutively secrete stromal cell-derived factor-1 (CXCL12), the ligand for CXCR4. Activation of CXCR4 induces SCLC cell migration and adhesion to stromal cells that secrete CXCL12, which in turn provides growth- and drug resistance-signals to the tumor cells. CXCR4 antagonists, such as Plerixafor (AMD3100) and T140 analogues (TN14003/ BKT140), disrupt CXCR4-mediated SCLC cell-adhesion to stromal cells. In stromal cell co-cultures, CXCR4 antagonists also sensitize SCLC cells to cytotoxic drugs, such as etoposide, and thereby antagonize cell adhesion-mediated drug resistance. Therefore, targeting the CXCR4-CXCL12 axis is a novel, attractive therapeutic approach in SCLC. Here, we summarize preclinical data about CXCR4 in SCLC, and the current status of the preclinical and clinical development of CXCR4 antagonists.
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Affiliation(s)
- Jan A Burger
- University of Texas MD Anderson Cancer Center, Department of Leukemia, Houston, TX 77230-1402, USA.
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Abstract
Hematopoietic and epithelial cancer cells express CXCR4, a seven-transmembrane G-protein-coupled chemokine receptor. Stromal cells within the bone marrow microenvironment constitutively secrete stromal cell-derived factor-1 (SDF-1/CXCL12), the ligand for CXCR4. Activation of CXCR4 induces leukemia cell trafficking and homing to the marrow microenvironment, where CXCL12 retains leukemia cells in close contact with marrow stromal cells that provide growth and drug resistance signals. CXCR4 antagonists, such as Plerixafor (AMD3100) and T140 analogs, can disrupt adhesive tumor-stroma interactions and mobilize leukemia cells from their protective stromal microenvironment, making them more accessible to conventional drugs. Therefore, targeting the CXCR4-CXCL12 axis is a novel, attractive therapeutic approach that is explored in ongoing clinical trials in leukemia patients. Initially, CXCR4 antagonists were developed for the treatment of HIV, where CXCR4 functions as a co-receptor for virus entry into T cells. Subsequently, CXCR4 antagonists were noticed to induce leukocytosis, and are currently used clinically for mobilization of hematopoietic stem cells. However, because CXCR4 plays a key role in cross-talk between leukemia cells (and a variety of other tumor cells) and their microenvironment, cancer treatment may become the ultimate application of CXCR4 antagonists. Here, we summarize the development of CXCR4 antagonists and their preclinical and clinical activities, focusing on leukemia and other cancers.
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