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Spahn MA, Luyten K, Van Loy T, Sathekge M, Deroose CM, Koole M, Schols D, Vanduffel W, De Vos K, Annaert P, Bormans G, Cleeren F. Second generation Al 18F-labeled D-amino acid peptide for CXCR4 targeted molecular imaging. Nucl Med Biol 2024; 132-133:108906. [PMID: 38518400 DOI: 10.1016/j.nucmedbio.2024.108906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 03/11/2024] [Accepted: 03/17/2024] [Indexed: 03/24/2024]
Abstract
BACKGROUND The C-X-C chemokine receptor type 4 (CXCR4) is overexpressed in many cancers, e.g. multiple myeloma and acute leukemia, yet solely [68Ga]PentixaFor is used for clinical PET imaging. The aim of this study was to develop and assess a second generation Al18F-labeled D-amino acid peptide based on the viral macrophage inflammatory protein II for CXCR4 targeted molecular imaging. METHODS We designed a library of monomer and multimer constructs and evaluated their binding affinity for human and mouse CXCR4. Based on these results, we selected the best vector molecule for development of an Al18F-labeled ligand, [18F]AlF-NOTA-2xDV1(c11sc12s), which was further evaluated in a cell-based binding assay to assess its binding properties and specificity for CXCR4. Next, pharmacokinetics and tumor uptake of [18F]AlF-NOTA-2xDV1(c11sc12s) were evaluated in naïve mice and mice with xenografts derived from U87.CXCR4 cells. Finally, we performed an imaging study in a non-human primate to assess the in vivo distribution of this novel radioligand in a species closely related to humans. RESULTS The lead ligand AlF-NOTA-2xDV1(c11sc12s) showed six-fold higher affinity for human CXCR4 compared to Ga-Pentixafor. The corresponding radiotracer was obtained in a good radiochemical yield of 40.1 ± 13.5 % (n = 4) and apparent molar activity of 20.4 ± 3.3 MBq/nmol (n = 4) after optimization. In U87.CD4.CXCR4 cell binding assays, the total bound fraction of [18F]AlF-NOTA-(2×)DV1(c11sc12s) was 32.4 ± 1.8 %. This fraction could be reduced by 82.5 % in the presence of 75 μM AMD3100. In naïve mice, [18F]AlF-NOTA-2xDV1(c11sc12s) accumulated in organs expressing mouse CXCR4, e.g. the liver (SUVmean (mean standardized uptake value) 75 min p.i. 11.7 ± 0.6), which was blockable by co-injecting AMD3100 (5 mg/kg). In U87.CXCR4 xenografted tumor mice, the tumor uptake of [18F]AlF-NOTA-2xDV1(c11sc12s) remained low (SUVmean 0.5 ± 0.1), but was reduced by co-administration of AMD3100. Surprisingly, [18F]AlF-NOTA-2xDV1(c11sc12s) exhibited a similar biodistribution in a non-human primate as in mice indicating off-target binding of [18F]AlF-NOTA-2xDV1(c11sc12s) in liver tissue. We confirmed that [18F]AlF-NOTA-2xDV1(c11sc12s) is taken up by hepatocytes using in vitro studies and that the uptake can be blocked with AMD3100 and rifampicin, a potent organic anion-transporting-polypeptide (OATP)1B1 and OATP1B3 inhibitor. CONCLUSION The second generation D-peptide AlF-NOTA-2xDV1(c11sc12s) showed high affinity for human CXCR4 and the corresponding radiotracer was produced in good radiochemical yields. However, [18F]AlF-NOTA-2xDV1(c11sc12s) is not specific for CXCR4 and is also a substrate for OATP1B1 and/or OATP1B3, known to mediate hepatic uptake. Therefore, D-amino acid peptides, based on the viral macrophage inflammatory protein II, are not the prefered vector molecule for the development of CXCR4 targeting molecular imaging tools.
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Affiliation(s)
- Muriel Aline Spahn
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Kaat Luyten
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Tom Van Loy
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | - Mike Sathekge
- Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa
| | - Christophe M Deroose
- Nuclear Medicine and Molecular Imaging, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Michel Koole
- Nuclear Medicine and Molecular Imaging, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Dominique Schols
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Laboratory of Virology and Chemotherapy, B-3000 Leuven, Belgium
| | - Wim Vanduffel
- Laboratory for Neuro- and Psychophysiology, KU Leuven Medical School, Leuven, Belgium
| | - Kristof De Vos
- Drug Delivery and Disposition, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Pieter Annaert
- Drug Delivery and Disposition, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Guy Bormans
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Frederik Cleeren
- Radiopharmaceutical Research, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium.
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Qing R, Xue M, Zhao J, Wu L, Breitwieser A, Smorodina E, Schubert T, Azzellino G, Jin D, Kong J, Palacios T, Sleytr UB, Zhang S. Scalable biomimetic sensing system with membrane receptor dual-monolayer probe and graphene transistor arrays. SCIENCE ADVANCES 2023; 9:eadf1402. [PMID: 37478177 PMCID: PMC10361598 DOI: 10.1126/sciadv.adf1402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 06/20/2023] [Indexed: 07/23/2023]
Abstract
Affinity-based biosensing can enable point-of-care diagnostics and continuous health monitoring, which commonly follows bottom-up approaches and is inherently constrained by bioprobes' intrinsic properties, batch-to-batch consistency, and stability in biofluids. We present a biomimetic top-down platform to circumvent such difficulties by combining a "dual-monolayer" biorecognition construct with graphene-based field-effect-transistor arrays. The construct adopts redesigned water-soluble membrane receptors as specific sensing units, positioned by two-dimensional crystalline S-layer proteins as dense antifouling linkers guiding their orientations. Hundreds of transistors provide statistical significance from transduced signals. System feasibility was demonstrated with rSbpA-ZZ/CXCR4QTY-Fc combination. Nature-like specific interactions were achieved toward CXCL12 ligand and HIV coat glycoprotein in physiologically relevant concentrations, without notable sensitivity loss in 100% human serum. The construct is regeneratable by acidic buffer, allowing device reuse and functional tuning. The modular and generalizable architecture behaves similarly to natural systems but gives electrical outputs, which enables fabrication of multiplex sensors with tailored receptor panels for designated diagnostic purposes.
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Affiliation(s)
- Rui Qing
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
- MIT Media Lab, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Mantian Xue
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Jiayuan Zhao
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Lidong Wu
- Chinese Academy of Fishery Sciences, Beijing 100141, China
| | - Andreas Breitwieser
- Department of Bionanosciences (DBNS), BOKU-University of Natural Resources and Life Sciences, Vienna, Austria
| | - Eva Smorodina
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | | | - Giovanni Azzellino
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - David Jin
- Avalon GloboCare Corp., Freehold, NJ 07728, USA
| | - Jing Kong
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tomás Palacios
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Uwe B. Sleytr
- Department of Bionanosciences (DBNS), BOKU-University of Natural Resources and Life Sciences, Vienna, Austria
| | - Shuguang Zhang
- MIT Media Lab, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
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Nosik M, Berezhnya E, Bystritskaya E, Kiseleva I, Lobach O, Kireev D, Svitich O. Female Sex Hormones Upregulate the Replication Activity of HIV-1 Sub-Subtype A6 and CRF02_AG but Not HIV-1 Subtype B. Pathogens 2023; 12:880. [PMID: 37513727 PMCID: PMC10383583 DOI: 10.3390/pathogens12070880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/18/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
More than 50% of all people living with HIV worldwide are women. Globally, HIV/AIDS is the leading cause of death among women aged 15 to 44. The safe and effective methods of hormonal contraception are an essential component of preventive medical care in order to reduce maternal and infant mortality. However, there is limited knowledge regarding the effect of hormones on the rate of viral replication in HIV infection, especially non-B subtypes. The goal of the present work was to study in vitro how the female hormones β-estradiol and progesterone affect the replication of the HIV-1 subtypes A6, CRF02_AG, and B. The findings show that high doses of hormones enhanced the replication of HIV-1 sub-subtype A6 by an average of 1.75 times and the recombinant variant CRF02_AG by 1.4 times but did not affect the replication of HIV-1 subtype B. No difference was detected in the expression of CCR5 and CXCR4 co-receptors on the cell surface, either in the presence or absence of hormones. However, one of the reasons for the increased viral replication could be the modulated TLRs secretion, as it was found that high doses of estradiol and progesterone upregulated, to varying degrees, the expression of TLR2 and TLR9 genes in the PBMCs of female donors infected with HIV-1 sub-subtype A6.
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Affiliation(s)
- Marina Nosik
- I.I. Mechnikov Institute of Vaccines and Sera, 105064 Moscow, Russia
| | - Elena Berezhnya
- I.I. Mechnikov Institute of Vaccines and Sera, 105064 Moscow, Russia
| | | | - Irina Kiseleva
- I.I. Mechnikov Institute of Vaccines and Sera, 105064 Moscow, Russia
| | - Olga Lobach
- I.I. Mechnikov Institute of Vaccines and Sera, 105064 Moscow, Russia
| | - Dmitry Kireev
- Central Research Institute of Epidemiology, 111123 Moscow, Russia
| | - Oxana Svitich
- I.I. Mechnikov Institute of Vaccines and Sera, 105064 Moscow, Russia
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Liu J, Yao XT, Feng XL, Bai XZ. BMP2 induces osteogenic differentiation through ACKR3 in mesenchymal stem cells. Biochem Biophys Res Commun 2023; 664:59-68. [PMID: 37141639 DOI: 10.1016/j.bbrc.2023.04.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/16/2023] [Accepted: 04/26/2023] [Indexed: 05/06/2023]
Abstract
In recent years, bone loss related diseases have attracted more and more attention, such as osteoporosis and osteonecrosis of the femoral head exhibited symptoms of osteopenia or insufficient bone mass in a certain stage. Mesenchymal stem cells (MSCs), which can be induced to differentiate into osteoblasts under certain conditions can provide a new solution bone disease. Herein, we deciphered the possible mechanism by which BMP2 drives the transduction of MSCs to the osteoblast lineage through ACKR3/p38/MAPK signaling. The levels of ACKR3 in femoral tissues of samples from humans with different ages and sexes were measured firstly and found that ACKR3 protein levels increase with age. In vitro cellular assays showed that ACKR3 inhibits BMP2-induced osteo-differentiation and promotes adipo-differentiation of MSCs, whereas siACKR3 exhibited the opposite effects. In vitro embryo femur culture experiment showed that inhibition of ACKR3 enhanced BMP2-induced trabecular bone formation in C57BL6/J mouse. In terms of molecular mechanisms, we found that p38/MAPK signaling might play the key role. ACKR3 agonist TC14012 suppressed the phosphorylation of p38 and STAT3 in BMP2 induced MSCs differentiation. Our findings suggested that ACKR3 might be a novel therapeutic target for the treatment of bone-associated diseases and bone-tissue engineering.
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Affiliation(s)
- Jiang Liu
- Dalian Medical University, Dalian, 116044, Liaoning, China; Department of Orthopedics, The 960th Hospital of the PLA Joint Logistics Support Force, Ji'nan, 250013, Shandong, China
| | - Xin-Tong Yao
- Department of Hematology, The First Affiliated Hospital of Army Medical University (Southwest Hospital), Chongqing, 400029, China
| | - Xiao-Lei Feng
- Department of Orthopedics, The 960th Hospital of the PLA Joint Logistics Support Force, Ji'nan, 250013, Shandong, China
| | - Xi-Zhuang Bai
- Dalian Medical University, Dalian, 116044, Liaoning, China; Department of Orthopedics, The People's Hospital of China Medical University, Shenyang, 110015, Liaoning, China.
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Yeo ECF, Brown MP, Gargett T, Ebert LM. The Role of Cytokines and Chemokines in Shaping the Immune Microenvironment of Glioblastoma: Implications for Immunotherapy. Cells 2021; 10:cells10030607. [PMID: 33803414 PMCID: PMC8001644 DOI: 10.3390/cells10030607] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 02/23/2021] [Accepted: 03/05/2021] [Indexed: 02/07/2023] Open
Abstract
Glioblastoma is the most common form of primary brain tumour in adults. For more than a decade, conventional treatment has produced a relatively modest improvement in the overall survival of glioblastoma patients. The immunosuppressive mechanisms employed by neoplastic and non-neoplastic cells within the tumour can limit treatment efficacy, and this can include the secretion of immunosuppressive cytokines and chemokines. These factors can play a significant role in immune modulation, thus disabling anti-tumour responses and contributing to tumour progression. Here, we review the complex interplay between populations of immune and tumour cells together with defined contributions by key cytokines and chemokines to these intercellular interactions. Understanding how these tumour-derived factors facilitate the crosstalk between cells may identify molecular candidates for potential immunotherapeutic targeting, which may enable better tumour control and improved patient survival.
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Affiliation(s)
- Erica C. F. Yeo
- Translational Oncology Laboratory, Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA 5001, Australia; (E.C.F.Y.); (M.P.B.); (T.G.)
- Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
| | - Michael P. Brown
- Translational Oncology Laboratory, Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA 5001, Australia; (E.C.F.Y.); (M.P.B.); (T.G.)
- Cancer Clinical Trials Unit, Royal Adelaide Hospital, Adelaide, SA 5000, Australia
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5000, Australia
| | - Tessa Gargett
- Translational Oncology Laboratory, Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA 5001, Australia; (E.C.F.Y.); (M.P.B.); (T.G.)
- Cancer Clinical Trials Unit, Royal Adelaide Hospital, Adelaide, SA 5000, Australia
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5000, Australia
| | - Lisa M. Ebert
- Translational Oncology Laboratory, Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA 5001, Australia; (E.C.F.Y.); (M.P.B.); (T.G.)
- Cancer Clinical Trials Unit, Royal Adelaide Hospital, Adelaide, SA 5000, Australia
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5000, Australia
- Correspondence:
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Dong BC, Li MX, Wang XY, Cheng X, Wang Y, Xiao T, Jolkkonen J, Zhao CS, Zhao SS. Effects of CXCR7-neutralizing antibody on neurogenesis in the hippocampal dentate gyrus and cognitive function in the chronic phase of cerebral ischemia. Neural Regen Res 2020; 15:1079-1085. [PMID: 31823888 PMCID: PMC7034276 DOI: 10.4103/1673-5374.270416] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Stromal cell-derived factor-1 and its receptor CXCR4 are essential regulators of the neurogenesis that occurs in the adult hippocampal dentate gyrus. However, the effects of CXCR7, a new atypical receptor of stromal cell-derived factor-1, on hippocampal neurogenesis after a stroke remain largely unknown. Our study is the first to investigate the effect of a CXCR7-neutralizing antibody on neurogenesis in the dentate gyrus and the associated recovery of cognitive function of rats in the chronic stage of cerebral ischemia. The rats were randomly divided into sham, sham + anti-CXCR7, ischemia and ischemia + anti-CXCR7 groups. Endothelin-1 was injected in the ipsilateral motor cortex and striatum to induce focal cerebral ischemia. Sham group rats were injected with saline instead of endothelin-1 via intracranial injection. Both sham and ischemic rats were treated with intraventricular infusions of CXCR7-neutralizing antibodies for 6 days 1 week after surgery. Immunofluorescence staining with doublecortin, a marker for neuronal precursors, was performed to assess the neurogenesis in the dentate gyrus. We found that anti-CXCR7 antibody infusion enhanced the proliferation and dendritic development of doublecortin-labeled cells in the dentate gyrus in both ischemic and sham-operated rats. Spatial learning and memory functions were assessed by Morris water maze tests 30–32 days after ischemia. CXCR7-neutralizing antibody treatment significantly reduced the escape latency of the spatial navigation trial and increased the time spent in the target quadrant of spatial probe trial in animals that received ischemic insult, but not in sham operated rats. These results suggest that CXCR7-neutralizing antibody enhances the neurogenesis in the dentate gyrus and improves the cognitive function after cerebral ischemia in rats. All animal experimental protocols and procedures were approved by the Institutional Animal Care and Use Committee of China Medical University (CMU16089R) on December 8, 2016.
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Affiliation(s)
- Bing-Chao Dong
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Mei-Xuan Li
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xiao-Yin Wang
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xi Cheng
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Yu Wang
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Ting Xiao
- Key Laboratory of Immunodermatology, Ministry of Health, Ministry of Education, Shenyang, Liaoning Province, China
| | - Jukka Jolkkonen
- Department of Neurology, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Chuan-Sheng Zhao
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Shan-Shan Zhao
- Department of Neurology, The First Hospital of China Medical University, Shenyang, Liaoning Province, China
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QTY code designed thermostable and water-soluble chimeric chemokine receptors with tunable ligand affinity. Proc Natl Acad Sci U S A 2019; 116:25668-25676. [PMID: 31776256 DOI: 10.1073/pnas.1909026116] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Chemokine receptors are of great interest as they play a critical role in many immunological and pathological processes. The ability to study chemokine receptors in aqueous solution without detergent would be significant because natural receptors require detergents to become soluble. We previously reported using the QTY code to design detergent-free chemokine receptors. We here report the design of 2 detergent-free chimeric chemokine receptors that were experimentally unattainable in detergent solution. We designed chimeric receptors by switching the N terminus and 3 extracellular (EC) loops between different receptors. Specifically, we replaced the N terminus and 3 EC loops of CCR5QTY with the N terminus and 3 EC loops of CXCR4. The ligand for CXCR4; namely CXCL12, binds to the chimeric receptor CCR5QTY (7TM)-CXCR4 (N terminus+3 EC loops), but with lower affinity compared to CXCR4; the CCL5 ligand of CCR5 binds the chimeric receptor with ∼20× lower affinity. The chimeric design helps to elucidate the mechanism of native receptor-ligand interaction. We also show that all detergent-free QTY-designed chemokine receptors, expressed in Escherichia coli, bind to their respective chemokines with affinities in the nanomolar (nM) range, similar to the affinities of native receptors and SF9-produced QTY variants. These QTY-designed receptors exhibit remarkable thermostability in the presence of arginine and retain ligand-binding activity after heat treatment at 60 °C for 4 h and 24 h, and at 100 °C for 10 min. Our design approach enables affordable scale-up production of detergent-free QTY variant chemokine receptors with tunable functionality for various uses.
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Adlere I, Caspar B, Arimont M, Dekkers S, Visser K, Stuijt J, de Graaf C, Stocks M, Kellam B, Briddon S, Wijtmans M, de Esch I, Hill S, Leurs R. Modulators of CXCR4 and CXCR7/ACKR3 Function. Mol Pharmacol 2019; 96:737-752. [DOI: 10.1124/mol.119.117663] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 09/14/2019] [Indexed: 02/06/2023] Open
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Kim S, Kim JE, Kim N, Joo M, Lee MW, Jeon HJ, Ryu H, Song IC, Song GY, Lee HJ. Decursin inhibits tumor growth, migration, and invasion in gastric cancer by down-regulating CXCR7 expression. Am J Cancer Res 2019; 9:2007-2018. [PMID: 31598401 PMCID: PMC6780662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023] Open
Abstract
CXC chemokine receptor 7 (CXCR7) is highly expressed in various type of cancers and promotes cancer progression and metastasis. However, the biological role and regulation of CXCR7 in gastric cancer remains unclear, and little is known about compounds that modulate CXCR7. Here, we investigated the role of CXCR7 in gastric tumorigenesis, and the effects of decursin, which is derived from Angelica gigas Nakai, on CXCR7. Our results showed that CXCR7 significantly promoted growth of gastric cancer cells and increased migration and invasion, which was mediated by the STAT3/c-Myc pathway. We also confirmed that decursin had an antitumor effect through down-regulating the expression of CXCR7 in gastric cancer. Furthermore, apoptotic cell death was induced through the reduction of anti-apoptotic factors such as Bcl-2 in vitro and in vivo. Our findings show that CXCR7 in gastric cancer promotes cancer progression through the STAT3/c-Myc pathway and that decursin is a natural compound that may target CXCR7 in gastric cancer treatment.
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Affiliation(s)
- Solbi Kim
- Infection Control Convergence Research Center, Chungnam National University College of MedicineDaejeon, Republic of Korea
- Department of Medical Science, Chungnam National University College of MedicineDaejeon, Republic of Korea
| | - Ji-Eun Kim
- College of Pharmacy, Chungnam National UniversityDaejeon, Republic of Korea
| | - Nayoung Kim
- Infection Control Convergence Research Center, Chungnam National University College of MedicineDaejeon, Republic of Korea
- Department of Medical Science, Chungnam National University College of MedicineDaejeon, Republic of Korea
| | - Mina Joo
- Infection Control Convergence Research Center, Chungnam National University College of MedicineDaejeon, Republic of Korea
- Department of Medical Science, Chungnam National University College of MedicineDaejeon, Republic of Korea
| | - Myung-Won Lee
- Department of Internal Medicine, Chungnam National University College of MedicineDaejeon, Republic of Korea
| | - Heung Jin Jeon
- Infection Control Convergence Research Center, Chungnam National University College of MedicineDaejeon, Republic of Korea
- Cancer Research Institute, Chungnam National UniversityDaejeon, Republic of Korea
| | - Hyewon Ryu
- Department of Internal Medicine, Chungnam National University College of MedicineDaejeon, Republic of Korea
| | - Ik-Chan Song
- Department of Internal Medicine, Chungnam National University College of MedicineDaejeon, Republic of Korea
| | - Gyu-Yong Song
- Infection Control Convergence Research Center, Chungnam National University College of MedicineDaejeon, Republic of Korea
- College of Pharmacy, Chungnam National UniversityDaejeon, Republic of Korea
| | - Hyo Jin Lee
- Infection Control Convergence Research Center, Chungnam National University College of MedicineDaejeon, Republic of Korea
- Department of Internal Medicine, Chungnam National University College of MedicineDaejeon, Republic of Korea
- Cancer Research Institute, Chungnam National UniversityDaejeon, Republic of Korea
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Li Y, He C, He Z, Zhong M, Liu D, Liu R, Fan R, Duan Y. AIDS prevention and control in the Yunnan region by T cell subset assessment. PLoS One 2019; 14:e0214800. [PMID: 30998710 PMCID: PMC6472762 DOI: 10.1371/journal.pone.0214800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 03/20/2019] [Indexed: 11/18/2022] Open
Abstract
Background Prior to being spread throughout broader China, multiple human immunodeficiency virus (HIV)-1 genotypes were originally discovered in the Yunnan Province. As the HIV-1 epidemic continues its spread in Yunnan, knowledge of the influence of gender, age, and ethnicity to instances of HIV reservoirs will benefit monitoring the spread of HIV. Methods The degree to which T cells are depleted during an HIV infection depends on the levels of immune activation. T-cell subsets were assessed in newly-diagnosed HIV/AIDS patients in Yunnan, and the influence of age, gender, and ethnicity were investigated. Patients that were newly diagnosed with the HIV-infection between the years 2015 and 2018 at the First Affiliated Hospital of Kunming Medical College were selected for this study (N = 408). The lymphocyte levels and T cell subsets were retrospectively measured in whole blood samples by FACS analysis. Results The median CD4 count was 224 ± 191 cells/μl. Significantly higher mean frequencies and absolute numbers were observed in CD3+, CD3+CD4+, CD3+CD8+, CD45+, and CD3+CD4+/CD45+ in females compared to males. Han patients showed a higher total number of CD3+T cells and the ratio of CD3+ /CD45+ cells compared to any other ethnic minority (P < 0.001). The numbers of CD3+ T-cells, CD3+CD8+ T cells, and CD45+ T cells were highest in the age group ≥ 60. Significant differences were observed in the counts of CD3+, CD3+CD8+, and CD45+ cells and the ratio of CD3+/CD45+ and CD3+CD4+/CD45+ cells between the ≤ 29 and 30–59 age groups. Conclusion This study has revealed that low levels of CD4+ T cells can be observed in newly-diagnosed HIV/AIDS patients in the Yunnan province. It has also been demonstrated that gender, age, and ethnicity have a significant association with the ratio of T-cell subsets that may contribute to virus progression and disease prognosis in individuals belonging to certain subsets of the population. This study has highlighted the importance of HIV/AIDS screening in at-risk populations to ensure timely and adequate clinical management in Yunnan.
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Affiliation(s)
- Ya Li
- Yunnan Key Laboratory of Laboratory Medicine, Kunming, Yunan, China
- Yunnan Institute of Laboratory Diagnosis, Kunming, Yunan, China
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
| | - Chenglu He
- Yunnan Key Laboratory of Laboratory Medicine, Kunming, Yunan, China
- Yunnan Institute of Laboratory Diagnosis, Kunming, Yunan, China
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
| | - Zengpin He
- Yunnan Key Laboratory of Laboratory Medicine, Kunming, Yunan, China
- Yunnan Institute of Laboratory Diagnosis, Kunming, Yunan, China
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
| | - Min Zhong
- Yunnan Key Laboratory of Laboratory Medicine, Kunming, Yunan, China
- Yunnan Institute of Laboratory Diagnosis, Kunming, Yunan, China
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
| | - Dajin Liu
- Department of Medical Records and Statistics, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
| | - Ruiyang Liu
- Department of Standardized Training, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
| | - Ruixuan Fan
- Department of Infectious Diseases, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
| | - Yong Duan
- Yunnan Key Laboratory of Laboratory Medicine, Kunming, Yunan, China
- Yunnan Institute of Laboratory Diagnosis, Kunming, Yunan, China
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan, China
- * E-mail:
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