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Krauklis SA, Hussain J, Murphy KM, Dray EL, Ousley CG, Justyna K, Distefano MD, Steelman AJ, McKim DB. Mononuclear phagocyte morphological response to chemoattractants is dependent on geranylgeranyl pyrophosphate. Am J Physiol Endocrinol Metab 2024; 327:E55-E68. [PMID: 38717364 DOI: 10.1152/ajpendo.00359.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 03/25/2024] [Accepted: 04/24/2024] [Indexed: 06/22/2024]
Abstract
Statins are used to treat hypercholesterolemia and function by inhibiting the production of the rate-limiting metabolite mevalonate. As such, statin treatment not only inhibits de novo synthesis of cholesterol but also isoprenoids that are involved in prenylation, the posttranslational lipid modification of proteins. The immunomodulatory effects of statins are broad and often conflicting. Previous work demonstrated that statins increased survival and inhibited myeloid cell trafficking in a murine model of sepsis, but the exact mechanisms underlying this phenomenon were unclear. Herein, we investigated the role of prenylation in chemoattractant responses. We found that simvastatin treatment abolished chemoattractant responses induced by stimulation by C5a and FMLP. The inhibitory effect of simvastatin treatment was unaffected by the addition of either farnesyl pyrophosphate (FPP) or squalene but was reversed by restoring geranylgeranyl pyrophosphate (GGPP). Treatment with prenyltransferase inhibitors showed that the chemoattractant response to both chemoattractants was dependent on geranylgeranylation. Proteomic analysis of C15AlkOPP-prenylated proteins identified several geranylgeranylated proteins involved in chemoattractant responses, including RHOA, RAC1, CDC42, and GNG2. Chemoattractant responses in THP-1 human macrophages were also geranylgeranylation dependent. These studies provide data that help clarify paradoxical findings on the immunomodulatory effects of statins. Furthermore, they establish the role of geranylgeranylation in mediating the morphological response to chemoattractant C5a.NEW & NOTEWORTHY The immunomodulatory effect of prenylation is ill-defined. We investigated the role of prenylation on the chemoattractant response to C5a. Simvastatin treatment inhibits the cytoskeletal remodeling associated with a chemotactic response. We showed that the chemoattractant response to C5a was dependent on geranylgeranylation, and proteomic analysis identified several geranylgeranylated proteins that are involved in C5a receptor signaling and cytoskeletal remodeling. Furthermore, they establish the role of geranylgeranylation in mediating the response to chemoattractant C5a.
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Affiliation(s)
- Steven A Krauklis
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Department of Animal Sciences,University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
| | - Jamal Hussain
- Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Department of Animal Sciences,University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
| | - Katherine M Murphy
- Department of Animal Sciences,University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
| | - Evan L Dray
- Department of Animal Sciences,University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
| | - Carey G Ousley
- Department of Animal Sciences,University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
| | - Katarzyna Justyna
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, United States
| | - Mark D Distefano
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota, United States
| | - Andrew J Steelman
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Department of Animal Sciences,University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
| | - Daniel B McKim
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Department of Animal Sciences,University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Neuroscience Program, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States
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Thakur M, Singh M, Kumar S, Dwivedi VP, Dakal TC, Yadav V. A Reappraisal of the Antiviral Properties of and Immune Regulation through Dietary Phytochemicals. ACS Pharmacol Transl Sci 2023; 6:1600-1615. [PMID: 37974620 PMCID: PMC10644413 DOI: 10.1021/acsptsci.3c00178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Indexed: 11/19/2023]
Abstract
In the present era of the COVID-19 pandemic, viral infections remain a major cause of morbidity and mortality worldwide. In this day and age, viral infections are rampant and spreading rapidly. Among the most aggressive viral infections are ebola, AIDS (acquired immunodeficiency syndrome), influenza, and SARS (severe acute respiratory syndrome). Even though there are few treatment options for viral diseases, most of the antiviral therapies are ineffective owing to frequent mutations, the development of more aggressive strains, drug resistance, and possible side effects. Traditionally, herbal remedies have been used by healers, including for dietary and medicinal purposes. Many clinical and scientific studies have demonstrated the therapeutic potential of plant-derived natural compounds. Because of unsafe practices like blood transfusions and organ transplants from infected patients, medical supply contamination. Our antiviral therapies cannot achieve sterile immunity, and we have yet to find a cure for these pernicious infections. Herbs have been shown to improve therapeutic efficacy against a wide variety of viral diseases because of their high concentration of immunomodulatory phytochemicals (both immunoinhibitory and anti-inflammatory). Combined with biotechnology, this folk medicine system can lead to the development of novel antiviral drugs and therapies. In this Review, we will summarize some selected bioactive compounds with probable mechanisms of their antiviral actions, focusing on the immunological axis of these compounds.
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Affiliation(s)
- Mony Thakur
- Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana 123031, India
| | - Mona Singh
- Department of Obstetrics and Gynaecology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, United States
| | - Sandeep Kumar
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research - Institute of Microbial Technology, Chandigarh 160036, India
| | - Ved Prakash Dwivedi
- International Centre for Genetic Engineering and Biotechnology, ICGEB Campus, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Tikam Chand Dakal
- Genome and Computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan 313001, India
| | - Vinod Yadav
- Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana 123031, India
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de Almeida Fuzeta M, Gonçalves PP, Fernandes-Platzgummer A, Cabral JMS, Bernardes N, da Silva CL. From Promise to Reality: Bioengineering Strategies to Enhance the Therapeutic Potential of Extracellular Vesicles. Bioengineering (Basel) 2022; 9:675. [PMID: 36354586 PMCID: PMC9687169 DOI: 10.3390/bioengineering9110675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/31/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022] Open
Abstract
Extracellular vesicles (EVs) have been the focus of great attention over the last decade, considering their promising application as next-generation therapeutics. EVs have emerged as relevant mediators of intercellular communication, being associated with multiple physiological processes, but also in the pathogenesis of several diseases. Given their natural ability to shuttle messages between cells, EVs have been explored both as inherent therapeutics in regenerative medicine and as drug delivery vehicles targeting multiple diseases. However, bioengineering strategies are required to harness the full potential of EVs for therapeutic use. For that purpose, a good understanding of EV biology, from their biogenesis to the way they are able to shuttle messages and establish interactions with recipient cells, is needed. Here, we review the current state-of-the-art on EV biology, complemented by representative examples of EVs roles in several pathophysiological processes, as well as the intrinsic therapeutic properties of EVs and paradigmatic strategies to produce and develop engineered EVs as next-generation drug delivery systems.
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Affiliation(s)
- Miguel de Almeida Fuzeta
- iBB–Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Pedro P. Gonçalves
- iBB–Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ana Fernandes-Platzgummer
- iBB–Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Joaquim M. S. Cabral
- iBB–Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Nuno Bernardes
- iBB–Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Cláudia L. da Silva
- iBB–Institute for Bioengineering and Biosciences and Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Associate Laboratory i4HB–Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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Belchamber KBR, Thein OS, Hazeldine J, Grudzinska FS, Faniyi AA, Hughes MJ, Jasper AE, Yip KP, Crowley LE, Lugg ST, Sapey E, Parekh D, Thickett DR, Scott A. Dysregulated Neutrophil Phenotype and Function in Hospitalised Non-ICU COVID-19 Pneumonia. Cells 2022; 11:2901. [PMID: 36139476 PMCID: PMC9496854 DOI: 10.3390/cells11182901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Rationale: Infection with the SARS-CoV2 virus is associated with elevated neutrophil counts. Evidence of neutrophil dysfunction in COVID-19 is based on transcriptomics or single functional assays. Cell functions are interwoven pathways, and understanding the effect across the spectrum of neutrophil function may identify therapeutic targets. Objectives: Examine neutrophil phenotype and function in 41 hospitalised, non-ICU COVID-19 patients versus 23 age-matched controls (AMC) and 26 community acquired pneumonia patients (CAP). Methods: Isolated neutrophils underwent ex vivo analyses for migration, bacterial phagocytosis, ROS generation, NETosis and receptor expression. Circulating DNAse 1 activity, levels of cfDNA, MPO, VEGF, IL-6 and sTNFRI were measured and correlated to clinical outcome. Serial sampling on day three to five post hospitalization were also measured. The effect of ex vivo PI3K inhibition was measured in a further cohort of 18 COVID-19 patients. Results: Compared to AMC and CAP, COVID-19 neutrophils demonstrated elevated transmigration (p = 0.0397) and NETosis (p = 0.0332), and impaired phagocytosis (p = 0.0036) associated with impaired ROS generation (p < 0.0001). The percentage of CD54+ neutrophils (p < 0.001) was significantly increased, while surface expression of CD11b (p = 0.0014) and PD-L1 (p = 0.006) were significantly decreased in COVID-19. COVID-19 and CAP patients showed increased systemic markers of NETosis including increased cfDNA (p = 0.0396) and impaired DNAse activity (p < 0.0001). The ex vivo inhibition of PI3K γ and δ reduced NET release by COVID-19 neutrophils (p = 0.0129). Conclusions: COVID-19 is associated with neutrophil dysfunction across all main effector functions, with altered phenotype, elevated migration and NETosis, and impaired antimicrobial responses. These changes highlight that targeting neutrophil function may help modulate COVID-19 severity.
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Affiliation(s)
- Kylie B. R. Belchamber
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Onn S. Thein
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Jon Hazeldine
- National Institute for Health Research Surgical Reconstruction and Microbiology Research Centre, Queen Elizabeth Hospital Birmingham, Birmingham B15 2TH, UK
| | - Frances S. Grudzinska
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Aduragbemi A. Faniyi
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Michael J. Hughes
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Alice E. Jasper
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Kay Por Yip
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Louise E. Crowley
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Sebastian T. Lugg
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Elizabeth Sapey
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
- PIONEER HDR-UK Hub in Acute Care, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Dhruv Parekh
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
- NIHR Clinical Research Facility, University Hospitals Birmingham NHS Foundation Trust, Edgbaston, Birmingham B12 2GW, UK
| | - David R. Thickett
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
| | - Aaron Scott
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK
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5
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Lv Z, Qiu L, Wang W, Liu Z, Liu Q, Wang L, Song L. RGD-Labeled Hemocytes With High Migration Activity Display a Potential Immunomodulatory Role in the Pacific Oyster Crassostrea gigas. Front Immunol 2022; 13:914899. [PMID: 35865522 PMCID: PMC9294365 DOI: 10.3389/fimmu.2022.914899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/03/2022] [Indexed: 11/13/2022] Open
Abstract
Immunocyte migration to infection sites is important for host cellular defense, but the main types of migrating hemocytes and their mechanisms against pathogen invasions are unclear in invertebrates. In the present study, a population of hemocytes in the Pacific oyster Crassostrea gigas labeled with a fluorescein isothiocyanate (FITC)-conjugated Arg-Gly-Asp (RGD)-containing peptide was sorted. RGD+ hemocytes were characterized by a smaller cell size and cytoplasmic-nucleo ratio, fewer cytoplasmic granules, and higher levels of myeloperoxidase, reactive oxygen species, and intracellular free calcium concentration. RGD+ hemocytes exhibited a high level of migration activity, which was further induced after V. splendidus infection. Transcriptome analysis revealed that RGD+ hemocytes highly expressed a series of migration-related genes, which together with migration-promoting genes were significantly upregulated after V. splendidus infection. The neuroendocrine system was also proven to regulate the migration activity of RGD+ hemocytes, especially with the excitatory neuroendocrine factor dopamine, which promoted migration activity as confirmed by receptor blocking assays. Meanwhile, RGD+ hemocytes could highly express immunomodulatory factor interleukin (IL)-17s and their receptor genes, which was positively related to the production of antimicrobial peptides in whole hemocytes after V. splendidus infection. Collectively, this study identified a specific hemocyte population, i.e., RGD+ hemocytes, that shows high migration activity in response to pathogen infection and exerts a potential immunomodulatory role by highly expressing IL-17s that might enhance the hemocytes’ antimicrobial peptide production in oysters.
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Affiliation(s)
- Zhao Lv
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, CAS Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Limei Qiu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, CAS Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
- *Correspondence: Limei Qiu, ; Linsheng Song,
| | - Weilin Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
| | - Zhaoqun Liu
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
| | - Qing Liu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, CAS Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, China
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
- *Correspondence: Limei Qiu, ; Linsheng Song,
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Galvão I, Sousa LP, Teixeira MM, Pinho V. PI3K Isoforms in Cell Signalling and Innate Immune Cell Responses. Curr Top Microbiol Immunol 2022; 436:147-164. [PMID: 36243843 DOI: 10.1007/978-3-031-06566-8_6] [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] [Indexed: 06/16/2023]
Abstract
Phosphoinositide-3-kinases (PI3Ks) are enzymes involved in signalling and modification of the function of all mammalian cells. These enzymes phosphorylate the 3-hydroxyl group of the inositol ring of phosphatidylinositol, resulting in lipid products that act as second messengers responsible for coordinating many cellular functions, including activation, chemotaxis, proliferation and survival. The identification of the functions that are mediated by a specific PI3K isoform is complex and depends on the specific cell type and inflammatory context. In this chapter we will focus on the role of PI3K isoforms in the context of innate immunity, focusing on the mechanisms by which PI3K signalling regulates phagocytosis, the activation of immunoglobulin, chemokine and cytokines receptors, production of ROS and cell migration, and how PI3K signalling plays a central role in host defence against infections and tissue injury.
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Affiliation(s)
- Izabela Galvão
- Immunopharmacology Laboratory, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Resolution of Inflammation Laboratory, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lirlândia P Sousa
- Signalling in Inflammation Laboratory, Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mauro M Teixeira
- Immunopharmacology Laboratory, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Vanessa Pinho
- Resolution of Inflammation Laboratory, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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Jayaraman S, Gnanasampanthapandian D, Rajasingh J, Palaniyandi K. Stem Cell-Derived Exosomes Potential Therapeutic Roles in Cardiovascular Diseases. Front Cardiovasc Med 2021; 8:723236. [PMID: 34447796 PMCID: PMC8382889 DOI: 10.3389/fcvm.2021.723236] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 07/12/2021] [Indexed: 12/12/2022] Open
Abstract
Owing to myocardial abnormalities, cardiac ailments are considered to be the major cause of morbidity and mortality worldwide. According to a recent study, membranous vesicles that are produced naturally, termed as "exosomes", have emerged as the potential candidate in the field of cardiac regenerative medicine. A wide spectrum of stem cells has also been investigated in the treatment of cardiovascular diseases (CVD). Exosomes obtained from the stem cells are found to be cardioprotective and offer great hope in the treatment of CVD. The basic nature of exosomes is to deal with the intracellular delivery of both proteins and nucleic acids. This activity of exosomes helps us to rely on them as the attractive pharmaceutical delivery agents. Most importantly, exosomes derived from microRNAs (miRNAs) hold great promise in assessing the risk of CVD, as they serve as notable biomarkers of the disease. Exosomes are small, less immunogenic, and lack toxicity. These nanovesicles harbor immense potential as a therapeutic entity and would provide fruitful benefits if consequential research were focused on their upbringing and development as a useful diagnostic and therapeutic tool in the field of medicine.
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Affiliation(s)
- Selvaraj Jayaraman
- Department of Biochemistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Dhanavathy Gnanasampanthapandian
- Cancer Science Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai, India
| | - Johnson Rajasingh
- Department of Bioscience Research & Medicine-Cardiology, The University of Tennessee Health Science Center, Memphis, TN, United States
| | - Kanagaraj Palaniyandi
- Cancer Science Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Chennai, India
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Zhao Y, Li X, Zhang W, Yu L, Wang Y, Deng Z, Liu M, Mo S, Wang R, Zhao J, Liu S, Hao Y, Wang X, Ji T, Zhang L, Wang C. Trends in the biological functions and medical applications of extracellular vesicles and analogues. Acta Pharm Sin B 2021; 11:2114-2135. [PMID: 34522580 PMCID: PMC8424226 DOI: 10.1016/j.apsb.2021.03.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/19/2021] [Accepted: 03/01/2021] [Indexed: 12/18/2022] Open
Abstract
Natural extracellular vesicles (EVs) play important roles in many life processes such as in the intermolecular transfer of substances and genetic information exchanges. Investigating the origins and working mechanisms of natural EVs may provide an understanding of life activities, especially regarding the occurrence and development of diseases. Additionally, due to their vesicular structure, EVs (in small molecules, nucleic acids, proteins, etc.) could act as efficient drug-delivery carriers. Herein, we describe the sources and biological functions of various EVs, summarize the roles of EVs in disease diagnosis and treatment, and review the application of EVs as drug-delivery carriers. We also assess the challenges and perspectives of EVs in biomedical applications.
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Affiliation(s)
- Yan Zhao
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University and Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Xiaolu Li
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Wenbo Zhang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Lanlan Yu
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Yang Wang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Zhun Deng
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Mingwei Liu
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Shanshan Mo
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Ruonan Wang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
| | - Jinming Zhao
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University and Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
| | - Shuli Liu
- Department of Clinical Laboratory, Peking University Civil Aviation School of Clinical Medicine, Beijing 100123, China
| | - Yun Hao
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University and Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
| | - Xiangdong Wang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University and Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
| | - Tianjiao Ji
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
- Corresponding authors. Tel./fax: +86 10 69156463.
| | - Luo Zhang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University and Beijing Key Laboratory of Nasal Diseases, Beijing Institute of Otolaryngology, Beijing 100005, China
- Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
- Corresponding authors. Tel./fax: +86 10 69156463.
| | - Chenxuan Wang
- State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
- Corresponding authors. Tel./fax: +86 10 69156463.
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9
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Belchamber KBR, Hughes MJ, Spittle DA, Walker EM, Sapey E. New Pharmacological Tools to Target Leukocyte Trafficking in Lung Disease. Front Immunol 2021; 12:704173. [PMID: 34367163 PMCID: PMC8334730 DOI: 10.3389/fimmu.2021.704173] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 06/24/2021] [Indexed: 01/13/2023] Open
Abstract
Infection and inflammation of the lung results in the recruitment of non-resident immune cells, including neutrophils, eosinophils and monocytes. This swift response should ensure clearance of the threat and resolution of stimuli which drive inflammation. However, once the threat is subdued this influx of immune cells should be followed by clearance of recruited cells through apoptosis and subsequent efferocytosis, expectoration or retrograde migration back into the circulation. This cycle of cell recruitment, containment of threat and then clearance of immune cells and repair is held in exquisite balance to limit host damage. Advanced age is often associated with detrimental changes to the balance described above. Cellular functions are altered including a reduced ability to traffic accurately towards inflammation, a reduced ability to clear pathogens and sustained inflammation. These changes, seen with age, are heightened in lung disease, and most chronic and acute lung diseases are associated with an exaggerated influx of immune cells, such as neutrophils, to the airways as well as considerable inflammation. Indeed, across many lung diseases, pathogenesis and progression has been associated with the sustained presence of trafficking cells, with examples including chronic diseases such as Chronic Obstructive Pulmonary Disease and Idiopathic Pulmonary Fibrosis and acute infections such as Pneumonia and Pneumonitis. In these instances, there is evidence that dysfunctional and sustained recruitment of cells to the airways not only increases host damage but impairs the hosts ability to effectively respond to microbial invasion. Targeting leukocyte migration in these instances, to normalise cellular responses, has therapeutic promise. In this review we discuss the current evidence to support the trafficking cell as an immunotherapeutic target in lung disease, and which potential mechanisms or pathways have shown promise in early drug trials, with a focus on the neutrophil, as the quintessential trafficking immune cell.
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Affiliation(s)
- Kylie B. R. Belchamber
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Michael J. Hughes
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Daniella A. Spittle
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Eloise M. Walker
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Elizabeth Sapey
- Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
- NIHR Clinical Research Facility Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom
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10
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Soto-Sánchez J, Ospina-Villa JD. Current status of quinoxaline and quinoxaline 1,4-di-N-oxides derivatives as potential antiparasitic agents. Chem Biol Drug Des 2021; 98:683-699. [PMID: 34289242 DOI: 10.1111/cbdd.13921] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 06/19/2021] [Accepted: 06/26/2021] [Indexed: 11/29/2022]
Abstract
Parasitic diseases are a public health problem, especially in developing countries where millions of people are affected every year. Current treatments have several drawbacks: emerging resistance to the existing drugs, lack of efficacy, and toxic side effects. Therefore, new antiparasitic drugs are urgently needed to treat and control diseases that affect human health, such as malaria, Chagas disease, leishmaniasis, amebiasis, giardiasis schistosomiasis, and filariasis, among others. Quinoxaline is a compound containing a benzene ring and a pyrazine ring. The oxidation of both pyrazine ring nitrogens allows the obtention of quinoxaline 1,4-di-N-oxides (QdNOs) derivatives. By modifying the chemical structure of these compounds, it is possible to obtain a wide variety of biological properties. This review investigated the activity of quinoxaline derivatives and QdNOs against different protozoan parasites and helminths. We also cover the structure-activity relationship (SAR) and summarize the main findings related to their mechanisms of action from published works in recent years. However, further studies are needed to determine specific molecular targets. This review aims to highlight the new development of antiparasitic drugs with better pharmacological profiles than current treatments.
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Affiliation(s)
- Jacqueline Soto-Sánchez
- Sección de Estudios de Posgrado e Investigación, Escuela Nacional de Medicina y Homeopatía, Instituto Politécnico Nacional, Ciudad de México, México
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11
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Chandra PK, Rutkai I, Kim H, Braun SE, Abdel-Mageed AB, Mondal D, Busija DW. Latent HIV-Exosomes Induce Mitochondrial Hyperfusion Due to Loss of Phosphorylated Dynamin-Related Protein 1 in Brain Endothelium. Mol Neurobiol 2021; 58:2974-2989. [PMID: 33586027 PMCID: PMC8128843 DOI: 10.1007/s12035-021-02319-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/01/2021] [Indexed: 02/07/2023]
Abstract
Damage to the cerebral vascular endothelium is a critical initiating event in the development of HIV-1-associated neurocognitive disorders. To study the role of mitochondria in cerebral endothelial dysfunction, we investigated how exosomes, isolated from both cell lines with integrated provirus and HIV-1 infected primary cells (HIV-exosomes), accelerate the dysfunction of primary human brain microvascular endothelial cells (HBMVECs) by inducing mitochondrial hyperfusion, and reducing the expression of phosphorylated endothelial nitric oxide synthase (p-eNOS). The quantitative analysis of the extracellular vesicles (EVs) indicates that the isolated EVs were predominantly exosomes. It was further supported by the detection of exosomal markers, and the absence of large EV-related protein in the isolated EVs. The exosomes were readily taken up by primary HBMVECs. HIV-exosomes induce cellular and mitochondrial superoxide production but reduce mitochondrial membrane potential in HBMVECs. HIV-exosomes increase mitochondrial hyperfusion, possibly due to loss of phosphorylated dynamin-related protein 1 (p-DRP1). HIV-exosomes, containing the HIV-Tat protein, and viral Tat protein reduce the expression of p-DRP1 and p-eNOS, and accelerate brain endothelial dysfunction. Finally, exosomes isolated from HIV-1 infected primary human peripheral blood mononuclear cells (hPBMCs) produce more exosomes than uninfected controls and reduce both p-DRP1 and p-eNOS expressions in primary HBMVECs. Our novel findings reveal the significant role of HIV-exosomes on dysregulation of mitochondrial function, which induces adverse changes in the function of the brain microvascular endothelium.
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Affiliation(s)
- Partha K Chandra
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue, SL-83, New Orleans, LA, 70112, USA.
| | - Ibolya Rutkai
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue, SL-83, New Orleans, LA, 70112, USA
| | - Hogyoung Kim
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Stephen E Braun
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue, SL-83, New Orleans, LA, 70112, USA
- Tulane University National Primate Research Center, Covington, LA, 70433, USA
| | - Asim B Abdel-Mageed
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue, SL-83, New Orleans, LA, 70112, USA
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, 70112, USA
| | - Debasis Mondal
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue, SL-83, New Orleans, LA, 70112, USA
- Department of Microbiology, Debusk College of Osteopathic Medicine, Knoxville, TN, 37932, USA
| | - David W Busija
- Department of Pharmacology, Tulane University School of Medicine, 1430 Tulane Avenue, SL-83, New Orleans, LA, 70112, USA
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12
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Role of extracellular vesicles in neurodegenerative diseases. Prog Neurobiol 2021; 201:102022. [PMID: 33617919 DOI: 10.1016/j.pneurobio.2021.102022] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/27/2020] [Accepted: 02/11/2021] [Indexed: 02/08/2023]
Abstract
Extracellular vesicles (EVs) are heterogeneous cell-derived membranous structures that arise from the endosome system or directly detach from the plasma membrane. In recent years, many advances have been made in the understanding of the clinical definition and pathogenesis of neurodegenerative diseases, but translation into effective treatments is hampered by several factors. Current research indicates that EVs are involved in the pathology of diseases such as Alzheimer's disease (AD), Parkinson's disease (PD), multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), and Huntington's disease (HD). Besides, EVs are also involved in the process of myelin formation, and can also cross the blood-brain barrier to reach the sites of CNS injury. It is suggested that EVs have great potential as a novel therapy for the treatment of neurodegenerative diseases. Here, we reviewed the advances in understanding the role of EVs in neurodegenerative diseases and addressed the critical function of EVs in the CNS. We have also outlined the physiological mechanisms of EVs in myelin regeneration and highlighted the therapeutic potential of EVs in neurodegenerative diseases.
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Kwok ZH, Wang C, Jin Y. Extracellular Vesicle Transportation and Uptake by Recipient Cells: A Critical Process to Regulate Human Diseases. Processes (Basel) 2021; 9. [PMID: 34336602 PMCID: PMC8323758 DOI: 10.3390/pr9020273] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Emerging evidence highlights the relevance of extracellular vesicles
(EVs) in modulating human diseases including but not limited to cancer,
inflammation, and neurological disorders. EVs can be found in almost all types
of human body fluids, suggesting that their trafficking may allow for their
targeting to remote recipient cells. While molecular processes underlying EV
biogenesis and secretion are increasingly elucidated, mechanisms governing EV
transportation, target finding and binding, as well as uptake into recipient
cells remain to be characterized. Understanding the specificity of EV transport
and uptake is critical to facilitating the development of EVs as valuable
diagnostics and therapeutics. In this mini review, we focus on EV uptake
mechanisms and specificities, as well as their implications in human
diseases.
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14
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Exploring the multifocal role of phytochemicals as immunomodulators. Biomed Pharmacother 2020; 133:110959. [PMID: 33197758 DOI: 10.1016/j.biopha.2020.110959] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/12/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023] Open
Abstract
A well-functioning immune system of the host body plays pivotal role in the maintenance of ordinary physiological and immunological functions as well as internal environment. Balanced immunity enhances defense mechanism against infection, diseases and unwanted pathogens to avoid hypersensitivity reactions and immune related diseases. The ideal immune responses are the results of corrective interaction between the innate immune cells and acquired components of the immune system. Recently, the interest towards the immune system increased as significant target of toxicity due to exposure of chemicals, drugs and environmental pollutants. Numerous factors are involved in altering the immune responses of the host such as sex, age, stress, malnutrition, alcohol, genetic variability, life styles, environmental-pollutants and chemotherapy exposure. Immunomodulation is any modification of immune responses, often involved induction, amplification, attenuation or inhibition of immune responses. Several synthetic or traditional medicines are available in the market which promptly have many serious adverse effects and create pathogenic resistance. Phytochemicals are naturally occurring molecules, which significantly play an imperative role in modulating favorable immune responses. The present review emphasizes on the risk factors associated with alterations in immune responses, and immunomodulatory activity of phytochemicals specifically, glycosides, alkaloids, phenolic acids, flavonoids, saponins, tannins and sterols and sterolins.
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15
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Shafi O. Switching of vascular cells towards atherogenesis, and other factors contributing to atherosclerosis: a systematic review. Thromb J 2020; 18:28. [PMID: 33132762 PMCID: PMC7592591 DOI: 10.1186/s12959-020-00240-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 09/23/2020] [Indexed: 12/17/2022] Open
Abstract
Background Onset, development and progression of atherosclerosis are complex multistep processes. Many aspects of atherogenesis are not yet properly known. This study investigates the changes in vasculature that contribute to switching of vascular cells towards atherogenesis, focusing mainly on ageing. Methods Databases including PubMed, MEDLINE and Google Scholar were searched for published articles without any date restrictions, involving atherogenesis, vascular homeostasis, aging, gene expression, signaling pathways, angiogenesis, vascular development, vascular cell differentiation and maintenance, vascular stem cells, endothelial and vascular smooth muscle cells. Results Atherogenesis is a complex multistep process that unfolds in a sequence. It is caused by alterations in: epigenetics and genetics, signaling pathways, cell circuitry, genome stability, heterotypic interactions between multiple cell types and pathologic alterations in vascular microenvironment. Such alterations involve pathological changes in: Shh, Wnt, NOTCH signaling pathways, TGF beta, VEGF, FGF, IGF 1, HGF, AKT/PI3K/ mTOR pathways, EGF, FOXO, CREB, PTEN, several apoptotic pathways, ET - 1, NF-κB, TNF alpha, angiopoietin, EGFR, Bcl - 2, NGF, BDNF, neurotrophins, growth factors, several signaling proteins, MAPK, IFN, TFs, NOs, serum cholesterol, LDL, ephrin, its receptor pathway, HoxA5, Klf3, Klf4, BMPs, TGFs and others.This disruption in vascular homeostasis at cellular, genetic and epigenetic level is involved in switching of the vascular cells towards atherogenesis. All these factors working in pathologic manner, contribute to the development and progression of atherosclerosis. Conclusion The development of atherosclerosis involves the switching of gene expression towards pro-atherogenic genes. This happens because of pathologic alterations in vascular homeostasis. When pathologic alterations in epigenetics, genetics, regulatory genes, microenvironment and vascular cell biology accumulate beyond a specific threshold, then the disease begins to express itself phenotypically. The process of biological ageing is one of the most significant factors in this aspect as it is also involved in the decline in homeostasis, maintenance and integrity.The process of atherogenesis unfolds sequentially (step by step) in an interconnected loop of pathologic changes in vascular biology. Such changes are involved in 'switching' of vascular cells towards atherosclerosis.
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Affiliation(s)
- Ovais Shafi
- Sindh Medical College - Dow University of Health Sciences, Karachi, Pakistan
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16
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Pseudomonas aeruginosa Planktonic- and Biofilm-Conditioned Media Elicit Discrete Metabolic Responses in Human Macrophages. Cells 2020; 9:cells9102260. [PMID: 33050176 PMCID: PMC7650675 DOI: 10.3390/cells9102260] [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] [Received: 08/28/2020] [Revised: 09/26/2020] [Accepted: 10/06/2020] [Indexed: 12/18/2022] Open
Abstract
Macrophages (MΦs) are prevalent innate immune cells, present throughout human bodily tissues where they orchestrate innate and adaptive immune responses to maintain cellular homeostasis. MΦs have the capacity to display a wide array of functional phenotypes due to different microenvironmental cues, particularly soluble bacterial secretory products. Recent evidence has emerged demonstrating that metabolism supports MΦ function and plasticity, in addition to energy and biomolecular precursor production. In this study, 1D 1H-NMR-based metabolomics was used to identify the metabolic pathways that are differentially altered following primary human monocyte-derived MΦ exposure to P. aeruginosa planktonic- and biofilm-conditioned media (PCM and BCM). Metabolic profiling of PCM- and BCM-exposed MΦs indicated a significant increase in glycolytic metabolism, purine biosynthesis, and inositol phosphate metabolism. In addition, these metabolic patterns suggested that BCM-exposed MΦs exhibit a hyperinflammatory metabolic profile with reduced glycerol metabolism and elevated catabolism of lactate and amino acids, relative to PCM-exposed MΦs. Altogether, our study reveals novel findings concerning the metabolic modulation of human MΦs after exposure to secretory microbial products and contributes additional knowledge to the field of immunometabolism in MΦs.
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Carretta MD, Barría Y, Borquez K, Urra B, Rivera A, Alarcón P, Hidalgo MA, Burgos RA. β-hydroxybutyrate and hydroxycarboxylic acid receptor 2 agonists activate the AKT, ERK and AMPK pathways, which are involved in bovine neutrophil chemotaxis. Sci Rep 2020; 10:12491. [PMID: 32719460 PMCID: PMC7385489 DOI: 10.1038/s41598-020-69500-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 07/06/2020] [Indexed: 12/31/2022] Open
Abstract
Elevated plasma concentrations of the ketone body β-hydroxybutyrate (BHB), an endogenous agonist of the hydroxycarboxylic acid receptor 2 (HCA2), is associated with an increased incidence of inflammatory diseases during lactation in dairy cows. In the early stages of this pathology, an increase in neutrophil recruitment is observed; however, the role of BHB remains elusive. This study characterized the effect of BHB and synthetic agonists of the HCA2 receptor on bovine neutrophil chemotaxis and the signaling pathways involved in this process. We demonstrated that treatment with BHB concentrations between 1.2 and 10 mM and two full selective agonists of the HCA2 receptor, MK-1903 and nicotinic acid, increased bovine neutrophil chemotaxis. We also observed that BHB and HCA2 agonists induced calcium release and phosphorylation of AKT, ERK 1/2 and AMPKα. To evaluate the role of these pathways in bovine neutrophil chemotaxis, we used the pharmacological inhibitors BAPTA-AM, pertussis toxin, U73122, LY294002, U0126 and compound C. Our results suggest that these pathways are required for HCA2 agonist-induced bovine neutrophil chemotaxis in non-physiological condition. Concentrations around 1.4 mM of BHB after calving may exert a chemoattractant effect that is key during the onset of the inflammatory process associated with metabolic disorders in dairy cows.
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Affiliation(s)
- María D Carretta
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile.
| | - Yonathan Barría
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Katherine Borquez
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Bárbara Urra
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Andrés Rivera
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Pablo Alarcón
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - María A Hidalgo
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Rafael A Burgos
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
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18
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Guan X, Yuan Y, Wang G, Zheng R, Zhang J, Dong B, Ran N, Hsu ACY, Wang C, Wang F. Ginsenoside Rg3 ameliorates acute exacerbation of COPD by suppressing neutrophil migration. Int Immunopharmacol 2020; 83:106449. [PMID: 32278128 DOI: 10.1016/j.intimp.2020.106449] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/12/2020] [Accepted: 03/25/2020] [Indexed: 12/14/2022]
Abstract
Acute Exacerbation of Chronic Obstructive Pulmonary Disease (AECOPD) is an irreversible inflammatory airways disease responsible for global health burden, involved with a complex condition of immunological change. Exacerbation-mediated neutrophilia is an important factor in the pathogenesis of cigarette smoke-induced AECOPD. Ginsenoside Rg3, a red-ginseng-derived compound, has multiple pharmacological properties such as anti-inflammatory and antitumor activities. Here, we investigated a protective role of Rg3 against AECOPD, focusing on neutrophilia. 14-week-cigarette smoke (CS) exposure and non-typeable Haemophilus inflenzae (NTHi) infection were used to establish the AECOPD murine model. Rg3 (10, 20, 40 mg/kg) was administered intragastrically from the 12th week of CS exposure before infection, and this led to improved lung function and lung morphology, and reduced neutrophilic inflammation, indicating a suppressive effect on neutrophil infiltration by Rg3. Further investigations on the mechanism of Rg3 on neutrophils were carried out using bronchial epithelial cell (BEAS-2B) and neutrophil co-culture and transepithelial migration model. Pre-treatment of neutrophils with Rg3 reduced neutrophil migration, which seemed to be the result of inhibition of phosphatidylinositol (PtdIns) 3-kinases (PI3K) activation within neutrophils. Thus, Rg3 could inhibit exacerbation-induced neutrophilia in COPD by negatively regulating PI3K activities in neutrophils. This study provides a potential natural drug against AECOPD neutrophil inflammation.
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Affiliation(s)
- Xuewa Guan
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Yuze Yuan
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Guoqiang Wang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Ruipeng Zheng
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; Department of Invasive Technology, First Hospital of Jilin University, Changchun 130021, China
| | - Jing Zhang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; Department of Intensive Care Unit, First Hospital of Jilin University, Changchun 130021, China
| | - Bing Dong
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Nan Ran
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Alan Chen-Yu Hsu
- Priority Research Centre for Asthma and Respiratory Diseases, Hunter Medical Research Institute and the University of Newcastle, NSW, Australia
| | - Cuizhu Wang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Fang Wang
- Department of Pathogeny Biology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China; Key laboratory of Zoonosis Research Ministry of Education, Jilin University, Changchun 130021, China.
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Roberts RE, Martin M, Marion S, Elumalai GL, Lewis K, Hallett MB. Ca 2+-activated cleavage of ezrin visualised dynamically in living myeloid cells during cell surface area expansion. J Cell Sci 2020; 133:jcs236968. [PMID: 31932511 DOI: 10.1242/jcs.236968] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 12/26/2019] [Indexed: 12/19/2022] Open
Abstract
The intracellular events underlying phagocytosis, a crucial event for innate immunity, are still unresolved. In order to test whether the reservoir of membrane required for the formation of the phagocytic pseudopodia is maintained by cortical ezrin, and that its cleavage is a key step in releasing this membrane, the cleavage of cortical ezrin was monitored within living phagocytes (the phagocytically competent cell line RAW264.7) through expressing two ezrin constructs with fluorescent protein tags located either inside the FERM or at the actin-binding domains. When ezrin is cleaved in the linker region by the Ca2+-activated protease calpain, separation of the two fluorophores would result. Experimentally induced Ca2+ influx triggered cleavage of peripherally located ezrin, which was temporally associated with cell expansion. Ezrin cleavage was also observed in the phagocytic pseudopodia during phagocytosis. Thus, our data demonstrates that peripheral ezrin is cleaved during Ca2+-influx-induced membrane expansion and locally within the extending pseudopodia during phagocytosis. This is consistent with a role for intact ezrin in maintaining folded membrane on the cell surface, which then becomes available for cell spreading and phagocytosis.
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Affiliation(s)
- Rhiannon E Roberts
- Neutrophil Signalling Group, Cardiff University Medical School, Cardiff, CF14 4XN, UK
| | - Marianne Martin
- University of Montpellier, Laboratory of Pathogen Host Interactions, CNRS, UMR 5235, 34059 Montpellier CEDEX 05, France
| | - Sabrina Marion
- University of Lille, CNRS UMR 8204, Institut Pasteur Lille, Centre for Infection and Immunity Lille, 59016 Lille CEDEX, France
| | - Geetha L Elumalai
- Neutrophil Signalling Group, Cardiff University Medical School, Cardiff, CF14 4XN, UK
| | - Kimberly Lewis
- Neutrophil Signalling Group, Cardiff University Medical School, Cardiff, CF14 4XN, UK
| | - Maurice B Hallett
- Neutrophil Signalling Group, Cardiff University Medical School, Cardiff, CF14 4XN, UK
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20
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Jadli AS, Ballasy N, Edalat P, Patel VB. Inside(sight) of tiny communicator: exosome biogenesis, secretion, and uptake. Mol Cell Biochem 2020; 467:77-94. [PMID: 32088833 DOI: 10.1007/s11010-020-03703-z] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 02/14/2020] [Indexed: 01/07/2023]
Abstract
Discovered in the late 1980s as an extracellular vesicle of endosomal origin secreted from reticulocytes, exosomes recently gained scientific attention due to its role in intercellular communication. Exosomes have now been identified to carry cell-specific cargo of nucleic acids, proteins, lipids, and other biologically active molecules. Exosomes can be selectively taken up by neighboring or distant cells, which has shown to result in structural and functional responses in the recipient cells. Recent advances indicate the regulation of exosomes at various steps, including their biogenesis, selection of their cargo, as well as cell-specific uptake. This review will shed light on the differences between the type of extracellular vesicles. In this review, we discuss the recent progress in our understanding of the regulation of exosome biogenesis, secretion, and uptake.
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Affiliation(s)
- Anshul S Jadli
- Department of Physiology and Pharmacology, Cumming School of Medicine, The University of Calgary, HMRB-53, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.,Libin Cardiovascular Institute of Alberta, The University of Calgary, HMRB-71, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Noura Ballasy
- Department of Physiology and Pharmacology, Cumming School of Medicine, The University of Calgary, HMRB-53, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.,Libin Cardiovascular Institute of Alberta, The University of Calgary, HMRB-71, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Pariya Edalat
- Department of Physiology and Pharmacology, Cumming School of Medicine, The University of Calgary, HMRB-53, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.,Libin Cardiovascular Institute of Alberta, The University of Calgary, HMRB-71, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Vaibhav B Patel
- Department of Physiology and Pharmacology, Cumming School of Medicine, The University of Calgary, HMRB-53, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada. .,Libin Cardiovascular Institute of Alberta, The University of Calgary, HMRB-71, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.
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21
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Jiang Y, Wang L, Zhang P, Liu X, Di H, Yang J, Liu SL, Pang DW, Liu D. Chemoenzymatic Labeling of Extracellular Vesicles for Visualizing Their Cellular Internalization in Real Time. Anal Chem 2020; 92:2103-2111. [PMID: 31876137 DOI: 10.1021/acs.analchem.9b04608] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Extracellular vesicles (EVs) are intercellular communicators that are heavily implicated in diverse pathological processes. However, it is poorly understood how EVs interact with recipient cells due to the lack of appropriate tracking techniques. Here, we report a robust chemoenzymatic labeling technique for visualizing the internalization process of EVs into target cells in real time. This method uses phospholipase D (PLD) to catalyze the in situ exchange of choline by alkyne in the native EV phosphatidylcholine. Subsequent alkyne-azide click chemistry allows conjugation of Cy5 dyes for visualizing EVs internalization by confocal fluorescence microscopy. The fluorescent labeling of EVs was accomplished in an efficient and biocompatible way, without affecting both the morphology and biological activity of EVs. We applied this chemoenzymatic labeling strategy to monitor the cellular uptake of cancer cell-derived EVs in real time and to further reveal multiple internalization mechanisms. This robust, biocompatible labeling strategy provides an essential tool for EV-related studies ranging from chemical biology to drug delivery.
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Affiliation(s)
- Ying Jiang
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Lei Wang
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Pengjuan Zhang
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Xuehui Liu
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Huixia Di
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Jie Yang
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Shu-Lin Liu
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Dai-Wen Pang
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
| | - Dingbin Liu
- College of Chemistry, Research Center for Analytical Sciences, Institute of Polymer Chemistry, State Key Laboratory of Medicinal Chemical Biology, and Tianjin Key Laboratory of Molecular Recognition and Biosensing , Nankai University , Tianjin 300071 , China
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22
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Jantan I, Haque MA, Ilangkovan M, Arshad L. An Insight Into the Modulatory Effects and Mechanisms of Action of Phyllanthus Species and Their Bioactive Metabolites on the Immune System. Front Pharmacol 2019; 10:878. [PMID: 31440162 PMCID: PMC6693410 DOI: 10.3389/fphar.2019.00878] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 07/10/2019] [Indexed: 11/25/2022] Open
Abstract
Phyllanthus species (family; Euphorbiaceae) have been intensively studied for their immunomodulating effects due to their wide-ranging uses to treat immune-related diseases in indigenous medicine, which are primarily lack of scientific basis. The focuses of this review are on the significance of Phyllanthus species and their bioactive metabolites particularly corilagin (1), geraniin (2), gallic acid (3), phyllanthin (4), hypophyllanthin (5), ellagic acid (6), phyltetralin (7), niranthin (8), catechin (9), quercetin (10), astragalin (11), and chebulagic acid (12) in the modulation of both innate and adaptive immune systems through various mechanisms and their possible therapeutic benefits for treatment of immune-related diseases. We have compiled all significant findings published in the literature, and the data were analyzed critically to provide perspectives and directions for future research for the plants as a prospective source of novel immunomodulating agents. Various Phyllanthus species particularly Phyllanthus amarus, Phyllanthus emblica, Phyllanthus niruri, and Phyllanthus urinaria have been documented to possess significant immunomodulatory effects. However, the possible challenges encountered by the application of extracts of various Phyllanthus species and their bioactive constituents as immunomodulators need to be addressed. Most reports on the biological and pharmacological studies of the plants were based on crude extracts. The extracts were not chemically characterized, and the contributions of their chemical constituents to the bioactivities were not identified. The underlying mechanisms involved in the immunomodulatory effects of the Phyllanthus species were not indepthly studied due to limitations in terms of design, conduct, and interpretation. Extensive experimental and preclinical studies on the immunomodulating potential of Phyllanthus species should be carried out to provide sufficient data to prove that their traditional uses are inherently effective and safe and will allow clinical trials to be pursued for their further development as therapeutic agents to treat immune-related disorders.
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Affiliation(s)
- Ibrahim Jantan
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor’s University, Lakeside Campus, Subang Jaya, Malaysia
| | - Md. Areeful Haque
- Department of Pharmacy, International Islamic University Chittagong, Chittagong, Bangladesh
| | | | - Laiba Arshad
- Department of Pharmacy, Forman Christian College (A Chartered University), Lahore, Pakistan
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23
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Jasper AE, McIver WJ, Sapey E, Walton GM. Understanding the role of neutrophils in chronic inflammatory airway disease. F1000Res 2019; 8. [PMID: 31069060 PMCID: PMC6489989 DOI: 10.12688/f1000research.18411.1] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/16/2019] [Indexed: 12/28/2022] Open
Abstract
Airway neutrophilia is a common feature of many chronic inflammatory lung diseases and is associated with disease progression, often regardless of the initiating cause. Neutrophils and their products are thought to be key mediators of the inflammatory changes in the airways of patients with chronic obstructive pulmonary disease (COPD) and have been shown to cause many of the pathological features associated with disease, including emphysema and mucus hypersecretion. Patients with COPD also have high rates of bacterial colonisation and recurrent infective exacerbations, suggesting that neutrophil host defence mechanisms are impaired, a concept supported by studies showing alterations to neutrophil migration, degranulation and reactive oxygen species production in cells isolated from patients with COPD. Although the role of neutrophils is best described in COPD, many of the pathological features of this disease are not unique to COPD and also feature in other chronic inflammatory airway diseases, including asthma, cystic fibrosis, alpha-1 anti-trypsin deficiency, and bronchiectasis. There is increasing evidence for immune cell dysfunction contributing to inflammation in many of these diseases, focusing interest on the neutrophil as a key driver of pulmonary inflammation and a potential therapeutic target than spans diseases. This review discusses the evidence for neutrophilic involvement in COPD and also considers their roles in alpha-1 anti-trypsin deficiency, bronchiectasis, asthma, and cystic fibrosis. We provide an in-depth assessment of the role of the neutrophil in each of these conditions, exploring recent advances in understanding, and finally discussing the possibility of common mechanisms across diseases.
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Affiliation(s)
- Alice E Jasper
- Birmingham Acute Care Research, Institute of Inflammation and Ageing, University of Birmingham, UK, Birmingham, B15 2TT, UK
| | - William J McIver
- Birmingham Acute Care Research, Institute of Inflammation and Ageing, University of Birmingham, UK, Birmingham, B15 2TT, UK
| | - Elizabeth Sapey
- Birmingham Acute Care Research, Institute of Inflammation and Ageing, University of Birmingham, UK, Birmingham, B15 2TT, UK
| | - Georgia M Walton
- Birmingham Acute Care Research, Institute of Inflammation and Ageing, University of Birmingham, UK, Birmingham, B15 2TT, UK
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24
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Zheng Y, Tu C, Zhang J, Wang J. Inhibition of multiple myeloma‑derived exosomes uptake suppresses the functional response in bone marrow stromal cell. Int J Oncol 2019; 54:1061-1070. [PMID: 30664188 DOI: 10.3892/ijo.2019.4685] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 12/07/2018] [Indexed: 11/06/2022] Open
Abstract
The communication between multiple myeloma (MM) cells and bone marrow stromal cells (BMSCs) serves a pivotal role in MM progression by supporting MM cell growth, proliferation and drug resistance. An exosomes‑based endogenous transport system has been determined as a novel mechanism of this communication by revealing the capacity for exchange of functional components between cells. An exosomes transfer‑mediated biological response in recipient cells is strongly determined by the detailed routes and mechanisms of exosomes internalization, which are diverse and can depend on surface molecules on the membrane of the vesicle and the recipient cell. Understanding the routes of exosomes uptake during MM cell‑BMSC communication is of great importance for the development of blocking strategies beneficial for MM treatment. In the present study, fluorescently‑labeled exosomes and pharmacological inhibitors, which are known to interfere with different internalization pathways, were used to characterize the cellular mechanisms involved in the uptake of MM cell‑derived exosomes by BMSCs. MM cell‑derived exosomes can promote BMSC viability and induce changes in multiple pro‑survival and pro‑proliferation pathways in BMSCs. As determined by flow cytometry and confocal microscopy, the uptake of MM cell‑derived exosomes proceeded primarily through endocytosis, via special caveolin‑dependent endocytosis, and partially through macropinocytosis and membrane fusion. Furthermore, treatment with endocytosis inhibitors suppressed the exosomes‑induced changes in pathways in BMSCs. Collectively, these results indicate that endocytosis is the primary route of internalization of MM cell‑derived exosomes by BMSCs and indicate that inhibition of exosomes uptake can interrupt the communication between MM cells and BMSCs and thus serve as a potential adjunctive strategy for MM treatment.
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Affiliation(s)
- Yongjiang Zheng
- Department of Hematology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Chenggong Tu
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
| | - Jingwen Zhang
- Department of Hematology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510630, P.R. China
| | - Jinheng Wang
- Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, Guangdong 511436, P.R. China
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25
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Chen Y, Fu WL, Gan XD, Xing WW, Xia WR, Zou MJ, Liu Q, Wang YY, Zhang C, Xu DG. SAK-HV Promotes RAW264.7 cells Migration Mediated by MCP-1 via JNK and NF-κB Pathways. Int J Biol Sci 2018; 14:1993-2002. [PMID: 30585263 PMCID: PMC6299369 DOI: 10.7150/ijbs.27459] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 09/25/2018] [Indexed: 12/14/2022] Open
Abstract
Macrophage migration plays an essential role in immune system and is also involved in many pathological situations. However, the regulatory mechanism of macrophage migration remains to be elucidated due to its diverse responses to various stimuli. SAK-HV, a multifunctional protein possessing thrombolytic and lipid-lowering activity, can selectively induce the macrophage proliferation. Here, we reported SAK-HV significantly triggered RAW264.7 cells migration through its functional domain of SAK-mutant by activating both c-jun N-terminal kinases (JNK) and nuclear factor-κB (NF-κB) pathways. Meanwhile, SAK-HV upregulated the expression of some effector proteins, among which only the expression of Monocyte chemoattractant protein-1 (MCP-1) was inhibited by the blockade of JNK and NF-κB pathways. Further research showed that MCP-1 promoted migration ultimately by interacting with Chemokine (C-C motif) Receptor 2 (CCR2) in an autocrine manner. In summary, SAK-HV induced RAW264.7 cells migration through its SAK-mutant domain, during which MCP-1 chemokine mediated by JNK and NF-κB pathways played a key role. These results revealed a novel effect of SAK-HV on modulating macrophage migration and also deepened the understanding of its pharmacodynamics.
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Affiliation(s)
- Yao Chen
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Wen-Liang Fu
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Xiang-Dong Gan
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Wei-Wei Xing
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Wen-Rong Xia
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Min-Ji Zou
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Qing Liu
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Yuan-Yuan Wang
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
| | - Chao Zhang
- Division of Oncology Research, Mayo Clinic, Rochester, MN 55905, USA
| | - Dong-Gang Xu
- Institute of Military Cognitive and Brain Sciences, Beijing, 100850, China
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Feng S, Zhou L, Zhang Y, Lü S, Long M. Mechanochemical modeling of neutrophil migration based on four signaling layers, integrin dynamics, and substrate stiffness. Biomech Model Mechanobiol 2018; 17:1611-1630. [PMID: 29968162 DOI: 10.1007/s10237-018-1047-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 06/24/2018] [Indexed: 01/09/2023]
Abstract
Directional neutrophil migration during human immune responses is a highly coordinated process regulated by both biochemical and biomechanical environments. In this paper, we developed an integrative mathematical model of neutrophil migration using a lattice Boltzmann-particle method built in-house to solve the moving boundary problem with spatiotemporal regulation of biochemical components. The mechanical features of the cell cortex are modeled by a series of spring-connected nodes representing discrete cell-substrate adhesive sites. The intracellular signaling cascades responsible for cytoskeletal remodeling [e.g., small GTPases, phosphoinositide-3-kinase (PI3K), and phosphatase and tensin homolog] are built based on our previous four-layered signaling model centered on the bidirectional molecular transport mechanism and implemented as reaction-diffusion equations. Focal adhesion dynamics are determined by force-dependent integrin-ligand binding kinetics and integrin recycling and are thus integrated with cell motion. Using numerical simulations, the model reproduces the major features of cell migration in response to uniform and gradient biochemical stimuli based on the quantitative spatiotemporal regulation of signaling molecules, which agree with experimental observations. The existence of multiple types of integrins with different binding kinetics could act as an adaptation mechanism for substrate stiffness. Moreover, cells can perform reversal, U-turn, or lock-on behaviors depending on the steepness of the reversal biochemical signals received. Finally, this model is also applied to predict the responses of mutants in which PTEN is overexpressed or disrupted.
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Affiliation(s)
- Shiliang Feng
- Center for Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Lüwen Zhou
- Center for Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Yan Zhang
- Center for Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Shouqin Lü
- Center for Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Mian Long
- Center for Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China.
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China.
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27
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Feng SL, Zhou LW, Lü SQ, Zhang Y. Dynamic seesaw model for rapid signaling responses in eukaryotic chemotaxis. Phys Biol 2018; 15:056004. [PMID: 29757152 DOI: 10.1088/1478-3975/aac45b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Directed movement of eukaryotic cells toward spatiotemporally varied chemotactic stimuli enables rapid intracellular signaling responses. While macroscopic cellular manifestation is shaped by balancing external stimuli strength with finite internal delays, the organizing principles of the underlying molecular mechanisms remain to be clarified. Here, we developed a novel modeling framework based on a simple seesaw mechanism to elucidate how cells repeatedly reverse polarity. As a key feature of the modeling, the bottom module of bidirectional molecular transport is successively controlled by three upstream modules of signal reception, initial signal processing, and Rho GTPase regulation. Our simulations indicated that an isotropic cell is polarized in response to a graded input signal. By applying a reversal gradient to a chemoattractant signal, lamellipod-specific molecules (i.e. PIP3 and PI3K) disappear, first from the cell front, and then they redistribute at the opposite side, whereas functional molecules at the rear of the cell (i.e. PIP2 and PTEN) act oppositely. In particular, the model cell exhibits a seesaw-like spatiotemporal pattern for the establishment of front and rear and interconversion, consistent with those related experimental observations. Increasing the switching frequency of the chemotactic gradient causes the cell to stay in a trapped state, further supporting the proposed dynamics of eukaryotic chemotaxis with the underlying cytoskeletal remodeling.
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Affiliation(s)
- Shi Liang Feng
- Institute of mechanical engineering and mechanics, Ningbo University, Ningbo 315211, People's Republic of China. Center of Biomechanics and Bioengineering and Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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28
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Stavrou EX, Fang C, Bane KL, Long AT, Naudin C, Kucukal E, Gandhi A, Brett-Morris A, Mumaw MM, Izadmehr S, Merkulova A, Reynolds CC, Alhalabi O, Nayak L, Yu WM, Qu CK, Meyerson HJ, Dubyak GR, Gurkan UA, Nieman MT, Sen Gupta A, Renné T, Schmaier AH. Factor XII and uPAR upregulate neutrophil functions to influence wound healing. J Clin Invest 2018; 128:944-959. [PMID: 29376892 PMCID: PMC5824869 DOI: 10.1172/jci92880] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 12/14/2017] [Indexed: 01/13/2023] Open
Abstract
Coagulation factor XII (FXII) deficiency is associated with decreased neutrophil migration, but the mechanisms remain uncharacterized. Here, we examine how FXII contributes to the inflammatory response. In 2 models of sterile inflammation, FXII-deficient mice (F12-/-) had fewer neutrophils recruited than WT mice. We discovered that neutrophils produced a pool of FXII that is functionally distinct from hepatic-derived FXII and contributes to neutrophil trafficking at sites of inflammation. FXII signals in neutrophils through urokinase plasminogen activator receptor-mediated (uPAR-mediated) Akt2 phosphorylation at S474 (pAktS474). Downstream of pAkt2S474, FXII stimulation of neutrophils upregulated surface expression of αMβ2 integrin, increased intracellular calcium, and promoted extracellular DNA release. The sum of these activities contributed to neutrophil cell adhesion, migration, and release of neutrophil extracellular traps in a process called NETosis. Decreased neutrophil signaling in F12-/- mice resulted in less inflammation and faster wound healing. Targeting hepatic F12 with siRNA did not affect neutrophil migration, whereas WT BM transplanted into F12-/- hosts was sufficient to correct the neutrophil migration defect in F12-/- mice and restore wound inflammation. Importantly, these activities were a zymogen FXII function and independent of FXIIa and contact activation, highlighting that FXII has a sophisticated role in vivo that has not been previously appreciated.
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Affiliation(s)
- Evi X. Stavrou
- Department of Medicine, Louis Stokes Veterans Administration Medical Center, Cleveland, Ohio, USA
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Chao Fang
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Kara L. Bane
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Andy T. Long
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Clément Naudin
- Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Erdem Kucukal
- Department of Mechanical and Aerospace Engineering, CWRU, Cleveland, Ohio, USA
| | - Agharnan Gandhi
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Adina Brett-Morris
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Michele M. Mumaw
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Sudeh Izadmehr
- Department of Genetics and Genomics Sciences, Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Alona Merkulova
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Cindy C. Reynolds
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Omar Alhalabi
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Lalitha Nayak
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
- Department of Medicine, Hematology and Oncology Division, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Wen-Mei Yu
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Cheng-Kui Qu
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | | | | | - Umut A. Gurkan
- Department of Mechanical and Aerospace Engineering, CWRU, Cleveland, Ohio, USA
| | | | | | - Thomas Renné
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Alvin H. Schmaier
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
- Department of Medicine, Hematology and Oncology Division, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
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29
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Zhu W, Qiu W, Lu A. Cryptotanshinone exhibits therapeutical effects on cerebral stroke through the PI3K/AKT‑eNOS signaling pathway. Mol Med Rep 2017; 16:9361-9366. [PMID: 29152647 PMCID: PMC5779989 DOI: 10.3892/mmr.2017.7824] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 07/13/2017] [Indexed: 01/12/2023] Open
Abstract
Cerebral stroke is a kind of acute cerebrovascular disease with high incidence, morbidity and disability. Treatments against various types of cerebral stroke are limited at preventive measurements due to the lack of effective therapeutic method. The present study aimed to investigate the protective effect of cryptotanshinone (CPT) on cerebral stroke, and investigate the possible mechanism involved in order to develop a novel therapy against stoke. The phosphoinositide 3‑kinase membrane translocation of cerebral stroke rats pretreated with CPT at various concentrations were measured, as well as the phosphorylation of protein kinase B (AKT) and endothelial nitric oxide synthase (eNOS). Additionally, the expression level of B‑cell lymphoma 2 (Bcl‑2), Bcl‑2‑associated X protein (Bax) and vascular endothelial growth factor were also assessed using western blotting and reverse transcription‑quantitative polymerase chain reaction. Furthermore, biochemical tests were used to measure the activity of superoxide dismutase (SOD), malondialdehyde (MDA) and nitric oxide (NO) in both the cerebral cortex and peripheral blood. As a result, CPT‑pretreated rats presented declined phosphoinositide 3‑kinase (PI3K) and AKT expression levels, indicating that the PI3K/AKT signaling pathway was inhibited. Increased Bcl‑2 and NO levels in both the cerebral cortex and peripheral blood demonstrated the anti‑apoptosis and blood vessel protection effect of CPT. Furthermore, increased SOD activity and declined MDA levels demonstrated suppressed lipid peroxidation. In conclusion, CPT exhibited a protective effect against cerebral stroke through inhibition of the PI3K/AKT‑eNOS signaling pathway. These results suggested the potential of CPT as a promising agent in the treatment of cerebral stroke.
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Affiliation(s)
- Weixin Zhu
- Department of Rehabilitation, Jinhua Municipal Central Hospital, Jinhua, Zhejiang 321001, P.R. China
| | - Weihong Qiu
- Department of Rehabilitation, Jinhua Municipal Central Hospital, Jinhua, Zhejiang 321001, P.R. China
| | - Ailan Lu
- Department of Rehabilitation, Jinhua Municipal Central Hospital, Jinhua, Zhejiang 321001, P.R. China
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30
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Lee WB, Yan JJ, Kang JS, Chung S, Kim LK. Mycobacterial cord factor enhances migration of neutrophil-like HL-60 cells by prolonging AKT phosphorylation. Microbiol Immunol 2017; 61:523-530. [PMID: 28976590 DOI: 10.1111/1348-0421.12544] [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: 08/03/2017] [Revised: 09/27/2017] [Accepted: 10/01/2017] [Indexed: 11/30/2022]
Abstract
Trehalose 6,6'-dimycolate (TDM), or cord factor, is a crucial stimulus of immune responses during Mycobacterium tuberculosis infection. Although TDM has immuno-stimulatory properties, including adjuvant activity and the ability to induce granuloma formation, the mechanisms underlying these remain unknown. We hypothesized that TDM stimulates transendothelial migration of neutrophils, which are the first immune cells to infiltrate the tissue upon infection. In this study, it was shown that TDM enhances N-formylmethionyl-leucyl-phenylalanine (fMLP)-induced chemotaxis and transendothelial movement by prolonging AKT phosphorylation in human neutrophils. TDM induced expression of macrophage-inducible C-type lectin, a receptor for TDM, and induced secretion of pro-inflammatory cytokines and chemokines in differentiated HL-60 cells. In 2- and 3-D neutrophil migration assays, TDM-stimulated neutrophils showed increased fMLP-induced chemotaxis and transendothelial migration. Interestingly, following fMLP stimulation of TDM-activated neutrophils, AKT, a crucial kinase for neutrophil polarization and chemotaxis, showed prolonged phosphorylation at serine 473. Taken together, these data suggest that TDM modulates transendothelial migration of neutrophils upon mycobacterial infection through prolonged AKT phosphorylation. AKT may therefore be a promising therapeutic target for enhancing immune responses to mycobacterial infection.
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Affiliation(s)
- Wook-Bin Lee
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Korea
| | - Ji-Jing Yan
- Biomedical Research Institute, Seoul National University Hospital, Seoul 110-744, Korea
| | - Ji-Seon Kang
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, Korea.,Severance Biomedical Science Institute and BK21 PLUS Project to Medical Sciences, Severance Institute for Vascular and Metabolic Research, Gangnam Severance Hospital Yonsei University College of Medicine, Seoul 06230, Korea
| | - Seok Chung
- School of Mechanical Engineering, Korea University, Seoul 02841, Korea
| | - Lark Kyun Kim
- Severance Biomedical Science Institute and BK21 PLUS Project to Medical Sciences, Severance Institute for Vascular and Metabolic Research, Gangnam Severance Hospital Yonsei University College of Medicine, Seoul 06230, Korea
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31
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Hong J, Dicker BL, Jayasinghe SN, De Gregorio F, Tian H, Han DY, Hudson KR. Strong inhibition of neutrophil–sperm interaction in cattle by selective phosphatidylinositol 3-kinase inhibitors†. Biol Reprod 2017; 97:671-687. [DOI: 10.1093/biolre/iox121] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 10/01/2017] [Indexed: 12/26/2022] Open
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32
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Bonavia A, Miller L, Kellum JA, Singbartl K. Hemoadsorption corrects hyperresistinemia and restores anti-bacterial neutrophil function. Intensive Care Med Exp 2017; 5:36. [PMID: 28779451 PMCID: PMC5544662 DOI: 10.1186/s40635-017-0150-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/24/2017] [Indexed: 12/16/2022] Open
Abstract
Background Mounting evidence suggests that sepsis-induced morbidity and mortality are due to both immune activation and immunosuppression. Resistin is an inflammatory cytokine and uremic toxin. Septic hyperresistinemia (plasma resistin >20 ng/ml) has been associated with greater disease severity and worse outcomes, and it is further exacerbated by concomitant acute kidney injury (AKI). Septic hyperresistinemia disturbs actin polymerization in neutrophils leading to impaired neutrophil migration, a crucial first-line mechanism in host defense to bacterial infection. Our experimental objective was to study the effects of hyperresistinemia on other F-actin-dependent neutrophil defense mechanisms, in particular intracellular bacterial clearance and generation of reactive oxygen species (ROS). We also sought to examine the effects of hemoadsorption on hyperresistinemia and neutrophil dysfunction. Methods Thirteen patients with septic shock and six control patients were analyzed for serum resistin levels and their effects on neutrophil migration. In vitro, following incubation with resistin-spiked serum samples, Pseudomonasaeruginosa clearance and ROS generation in neutrophils were measured. Phosphorylation of 3-phosphoinositide-dependent protein kinase-1 (PDPK1) was assessed using flow cytometry. In vitro hemoadsorption with both Amberchrome™ columns (AC) and CytoSorb® cartridges (CC) were used to test correction of hyperresistinemia. We further tested AC for their effect on cell migration and ROS generation and CC for their effect on bacterial clearance. Results Patients with septic shock had higher serum resistin levels than control ICU patients and showed a strong, negative correlation between hyperresistinemia and neutrophil transwell migration (ρ= − 0.915, p < 0.001). In vitro, neutrophils exposed to hyperresistinemia exhibited twofold lower intracellular bacterial clearance rates compared to controls. Resistin impaired intracellular signaling and ROS production in a dose-dependent manner. Hemoadsorption with AC reduced serum concentrations of resistin and restored neutrophil migration and generation of ROS to normal levels. Hemoadsorption with CC also corrected hyperresistinemia and reconstituted normal intracellular bacterial clearance. Conclusions Septic hyperresistinemia strongly correlates with inhibition of neutrophil migration in vitro. Hyperresistinemia itself reversibly impairs neutrophil intracellular bacterial clearance and ROS generation. Hemoadsorption therapy with a clinically approved device corrects hyperresistinemia and neutrophil dysfunction. It may therefore provide a therapeutic option to improve neutrophil function during septic hyperresistinemia and ultimately alleviate immunosuppression in this disease state.
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Affiliation(s)
- Anthony Bonavia
- Department of Anesthesiology and Perioperative Medicine, Penn State Health, Hershey, PA, USA
| | - Lauren Miller
- Department of Anesthesiology and Perioperative Medicine, Penn State Health, Hershey, PA, USA
| | - John A Kellum
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Center for Critical Care Nephrology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kai Singbartl
- Department of Anesthesiology and Perioperative Medicine, Penn State Health, Hershey, PA, USA. .,Center for Critical Care Nephrology, University of Pittsburgh, Pittsburgh, PA, USA. .,Department of Critical Care Medicine, Mayo Clinic, 5777 East Mayo Boulevard, Phoenix, AZ, 85054, USA.
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Horibata S, Rogers KE, Sadegh D, Anguish LJ, McElwee JL, Shah P, Thompson PR, Coonrod SA. Role of peptidylarginine deiminase 2 (PAD2) in mammary carcinoma cell migration. BMC Cancer 2017; 17:378. [PMID: 28549415 PMCID: PMC5446677 DOI: 10.1186/s12885-017-3354-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 05/15/2017] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Penetration of the mammary gland basement membrane by cancer cells is a crucial first step in tumor invasion. Using a mouse model of ductal carcinoma in situ, we previously found that inhibition of peptidylarginine deiminase 2 (PAD2, aka PADI2) activity appears to maintain basement membrane integrity in xenograft tumors. The goal of this investigation was to gain insight into the mechanisms by which PAD2 mediates this process. METHODS For our study, we modulated PAD2 activity in mammary ductal carcinoma cells by lentiviral shRNA-mediated depletion, lentiviral-mediated PAD2 overexpression, or PAD inhibition and explored the effects of these treatments on changes in cell migration and cell morphology. We also used these PAD2-modulated cells to test whether PAD2 may be required for EGF-induced cell migration. To determine how PAD2 might promote tumor cell migration in vivo, we tested the effects of PAD2 inhibition on the expression of several cell migration mediators in MCF10DCIS.com xenograft tumors. In addition, we tested the effect of PAD2 inhibition on EGF-induced ductal invasion and elongation in primary mouse mammary organoids. Lastly, using a transgenic mouse model, we investigated the effects of PAD2 overexpression on mammary gland development. RESULTS Our results indicate that PAD2 depletion or inhibition suppresses cell migration and alters the morphology of MCF10DCIS.com cells. In addition, we found that PAD2 depletion suppresses the expression of the cytoskeletal regulatory proteins RhoA, Rac1, and Cdc42 and also promotes a mesenchymal to epithelial-like transition in tumor cells with an associated increase in the cell adhesion marker, E-cadherin. Our mammary gland organoid study found that inhibition of PAD2 activity suppresses EGF-induced ductal invasion. In vivo, we found that PAD2 overexpression causes hyperbranching in the developing mammary gland. CONCLUSION Together, these results suggest that PAD2 plays a critical role in breast cancer cell migration. Our findings that EGF treatment increases protein citrullination and that PAD2 inhibition blocks EGF-induced cell migration suggest that PAD2 likely functions within the EGF signaling pathway to mediate cell migration.
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Affiliation(s)
- Sachi Horibata
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA.,Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA
| | - Katherine E Rogers
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA
| | - David Sadegh
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA
| | - Lynne J Anguish
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA
| | - John L McElwee
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA
| | - Pragya Shah
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA
| | - Paul R Thompson
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, 01605, USA
| | - Scott A Coonrod
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA.
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Shi Y, Lai X, Ye L, Chen K, Cao Z, Gong W, Jin L, Wang C, Liu M, Liao Y, Wang JM, Zhou N. Activated niacin receptor HCA2 inhibits chemoattractant-mediated macrophage migration via Gβγ/PKC/ERK1/2 pathway and heterologous receptor desensitization. Sci Rep 2017; 7:42279. [PMID: 28186140 PMCID: PMC5301212 DOI: 10.1038/srep42279] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 01/08/2017] [Indexed: 12/18/2022] Open
Abstract
The niacin receptor HCA2 is implicated in controlling inflammatory host responses with yet poorly understood mechanistic basis. We previously reported that HCA2 in A431 epithelial cells transduced Gβγ-protein kinase C- and Gβγ-metalloproteinase/EGFR-dependent MAPK/ERK signaling cascades. Here, we investigated the role of HCA2 in macrophage-mediated inflammation and the underlying mechanisms. We found that proinflammatory stimulants LPS, IL-6 and IL-1β up-regulated the expression of HCA2 on macrophages. Niacin significantly inhibited macrophage chemotaxis in response to chemoattractants fMLF and CCL2 by disrupting polarized distribution of F-actin and Gβ protein. Niacin showed a selected additive effect on chemoattractant-induced activation of ERK1/2, JNK and PI3K pathways, but only the MEK inhibitor UO126 reduced niacin-mediated inhibition of macrophage chemotaxis, while activation of ERK1/2 by EGF alone did not inhibit fMLF-mediated migration of HEK293T cells co-expressing HCA2 and fMLF receptor FPR1. In addition, niacin induced heterologous desensitization and internalization of FPR1. Furthermore, niacin rescued mice from septic shock by diminishing inflammatory symptoms and the effect was abrogated in HCA2-/- mice. These results suggest that Gβγ/PKC-dependent ERK1/2 activation and heterologous desensitization of chemoattractant receptors are involved in the inhibition of chemoattractant-induced migration of macrophages by niacin. Thus, HCA2 plays a critical role in host protection against pro-inflammatory insults.
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Affiliation(s)
- Ying Shi
- College of Life Sciences, Zhejiang University, Yu Hang Tang Load 388, Hangzhou, PR China
| | - Xiangru Lai
- College of Life Sciences, Zhejiang University, Yu Hang Tang Load 388, Hangzhou, PR China
| | - Lingyan Ye
- College of Life Sciences, Zhejiang University, Yu Hang Tang Load 388, Hangzhou, PR China
| | - Keqiang Chen
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA
| | - Zheng Cao
- College of Life Sciences, Zhejiang University, Yu Hang Tang Load 388, Hangzhou, PR China
| | - Wanghua Gong
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA
| | - Lili Jin
- College of Life Sciences, Zhejiang University, Yu Hang Tang Load 388, Hangzhou, PR China
| | - Chunyan Wang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA.,Xuzhou Yes Biotech Laboratories Ltd. Xuzhou, Jiangsu, PR China
| | - Mingyong Liu
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA.,Department of Spine Surgery, Daping Hospital, Third Military Medical University, Chongqing, PR China
| | - Yuan Liao
- College of Life Sciences, Zhejiang University, Yu Hang Tang Load 388, Hangzhou, PR China
| | - Ji Ming Wang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute-Frederick, NIH, Frederick, MD 21702, USA
| | - Naiming Zhou
- College of Life Sciences, Zhejiang University, Yu Hang Tang Load 388, Hangzhou, PR China
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Tumor Microenvironment Modulation via Gold Nanoparticles Targeting Malicious Exosomes: Implications for Cancer Diagnostics and Therapy. Int J Mol Sci 2017; 18:ijms18010162. [PMID: 28098821 PMCID: PMC5297795 DOI: 10.3390/ijms18010162] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 01/03/2017] [Accepted: 01/09/2017] [Indexed: 12/18/2022] Open
Abstract
Exosomes are nanovesicles formed in the endosomal pathway with an important role in paracrine and autocrine cell communication. Exosomes secreted by cancer cells, malicious exosomes, have important roles in tumor microenvironment maturation and cancer progression. The knowledge of the role of exosomes in tumorigenesis prompted a new era in cancer diagnostics and therapy, taking advantage of the use of circulating exosomes as tumor biomarkers due to their stability in body fluids and targeting malignant exosomes’ release and/or uptake to inhibit or delay tumor development. In recent years, nanotechnology has paved the way for the development of a plethora of new diagnostic and therapeutic platforms, fostering theranostics. The unique physical and chemical properties of gold nanoparticles (AuNPs) make them suitable vehicles to pursuit this goal. AuNPs’ properties such as ease of synthesis with the desired shape and size, high surface:volume ratio, and the possibility of engineering their surface as desired, potentiate AuNPs’ role in nanotheranostics, allowing the use of the same formulation for exosome detection and restraining the effect of malicious exosomes in cancer progression.
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Reclusa P, Sirera R, Araujo A, Giallombardo M, Valentino A, Sorber L, Bazo IG, Pauwels P, Rolfo C. Exosomes genetic cargo in lung cancer: a truly Pandora's box. Transl Lung Cancer Res 2016; 5:483-491. [PMID: 27826529 DOI: 10.21037/tlcr.2016.10.06] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lung cancer is a highly lethal disease. Targeted therapies have been developed in last years, however survival rates are not improving due to the delay in the diagnosis, making biomarkers one of the most interesting fields of study in cancer. Liquid biopsy has raised as an alternative to tissue biopsy due to improvements in analytical techniques for circulating tumor cells (CTCs), cell free DNA and exosomes. Among all, exosomes have raised as one of the most promising tools to understand the tumor due to their stability in the blood and their similarity to the cells of origin. In the last years, different alterations have been described inside the exosomes derived from non-small cell lung cancer (NSCLC) cells mirroring the processes inside these tumoral cells, such as EGFR mutation, translocations or microRNA (miRNA) deregulation. All these studies have opened the window to a new world of possibilities in the study of tumor biomarkers.
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Affiliation(s)
- Pablo Reclusa
- Phase I- Early Clinical trials Unit, Oncology Department & Center for Oncological Research (CORE) Antwerp University Hospital, Antwerp, Belgium
| | - Rafael Sirera
- Department of Biotechnology, Politechnic University of Valencia Hospitality Centre of Oporto, Valencia, Spain
| | - Antonio Araujo
- Department of Medical Oncology, Centro Hospitalar do Porto, Porto, Portugal
| | - Marco Giallombardo
- Phase I- Early Clinical trials Unit, Oncology Department & Center for Oncological Research (CORE) Antwerp University Hospital, Antwerp, Belgium
| | - Anna Valentino
- Phase I- Early Clinical trials Unit, Oncology Department & Center for Oncological Research (CORE) Antwerp University Hospital, Antwerp, Belgium
| | - Laure Sorber
- Molecular Pathology Unit, Antwerp University Hospital & Center for Oncological Research (CORE) Antwerp University Hospital, Antwerp, Belgium
| | - Ignacio Gil Bazo
- Department of Medical Oncology, University of Navarra, Pamplona, Spain
| | - Patrick Pauwels
- Molecular Pathology Unit, Antwerp University Hospital & Center for Oncological Research (CORE) Antwerp University Hospital, Antwerp, Belgium
| | - Christian Rolfo
- Phase I- Early Clinical trials Unit, Oncology Department & Center for Oncological Research (CORE) Antwerp University Hospital, Antwerp, Belgium
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Morioka S, Nigorikawa K, Sasaki J, Hazeki K, Kasuu Y, Sasaki T, Hazeki O. Myeloid cell-specific inositol polyphosphate-4-phosphatase type I knockout mice impair bacteria clearance in a murine peritonitis model. Innate Immun 2016; 22:444-51. [DOI: 10.1177/1753425916652714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 05/10/2016] [Indexed: 11/17/2022] Open
Abstract
Phosphatidylinositol 3-kinase (PI3K)/Akt signaling has been implicated in the anti-inflammatory response in a mouse model of endotoxemia and sepsis. The present study focused on the role of inositol polyphosphate-4-phosphatase type I (Inpp4a), which dephosphorylates PtdIns(3,4)P2 to PtdIns(3)P, in bacterial infections. We prepared myeloid cell-specific Inpp4a-conditional knockout mice. Macrophages from these mice showed increased Akt phosphorylation and reduced production of inflammatory cytokines in response to LPS or Escherichia coli in vitro. The Inpp4a knockout mice survived for a shorter time than wild type mice after i.p. infection with E. coli, with less production of inflammatory cytokines. Additionally, E. coli clearance from blood and lung was significantly impaired in the knockout mice. A likely mechanism is that the Inpp4a-catalyzed dephosphorylation of PtdIns(3,4)P2 down-regulates Akt pathways, which, in turn, increases the production of inflammatory mediators. This mechanism at least fits the decreased E. coli clearance and short survival in the Inpp4a knockout mice.
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Affiliation(s)
- Shin Morioka
- Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Kiyomi Nigorikawa
- Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Junko Sasaki
- Department of Pathology and Immunology, Akita University School of Medicine, Akita 010-8543, Japan
| | - Kaoru Hazeki
- Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Yoshihiro Kasuu
- Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Takehiko Sasaki
- Department of Pathology and Immunology, Akita University School of Medicine, Akita 010-8543, Japan
| | - Osamu Hazeki
- Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
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Hoare JI, Rajnicek AM, McCaig CD, Barker RN, Wilson HM. Electric fields are novel determinants of human macrophage functions. J Leukoc Biol 2015; 99:1141-51. [PMID: 26718542 DOI: 10.1189/jlb.3a0815-390r] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/18/2015] [Indexed: 01/08/2023] Open
Abstract
Macrophages are key cells in inflammation and repair, and their activity requires close regulation. The characterization of cues coordinating macrophage function has focused on biologic and soluble mediators, with little known about their responses to physical stimuli, such as the electrical fields that are generated naturally in injured tissue and which accelerate wound healing. To address this gap in understanding, we tested how properties of human monocyte-derived macrophages are regulated by applied electrical fields, similar in strengths to those established naturally. With the use of live-cell video microscopy, we show that macrophage migration is directed anodally by electrical fields as low as 5 mV/mm and is electrical field strength dependent, with effects peaking ∼300 mV/mm. Monocytes, as macrophage precursors, migrate in the opposite, cathodal direction. Strikingly, we show for the first time that electrical fields significantly enhance macrophage phagocytic uptake of a variety of targets, including carboxylate beads, apoptotic neutrophils, and the nominal opportunist pathogen Candida albicans, which engage different classes of surface receptors. These electrical field-induced functional changes are accompanied by clustering of phagocytic receptors, enhanced PI3K and ERK activation, mobilization of intracellular calcium, and actin polarization. Electrical fields also modulate cytokine production selectively and can augment some effects of conventional polarizing stimuli on cytokine secretion. Taken together, electrical signals have been identified as major contributors to the coordination and regulation of important human macrophage functions, including those essential for microbial clearance and healing. Our results open up a new area of research into effects of naturally occurring and clinically applied electrical fields in conditions where macrophage activity is critical.
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Affiliation(s)
- Joseph I Hoare
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Institute of Medical Sciences, Foresterhill, Aberdeen, United Kingdom
| | - Ann M Rajnicek
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Institute of Medical Sciences, Foresterhill, Aberdeen, United Kingdom
| | - Colin D McCaig
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Institute of Medical Sciences, Foresterhill, Aberdeen, United Kingdom
| | - Robert N Barker
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Institute of Medical Sciences, Foresterhill, Aberdeen, United Kingdom
| | - Heather M Wilson
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Institute of Medical Sciences, Foresterhill, Aberdeen, United Kingdom
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Herrmann JM, Meyle J. Neutrophil activation and periodontal tissue injury. Periodontol 2000 2015; 69:111-27. [DOI: 10.1111/prd.12088] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Chen XH, Zhang BW, Li H, Peng XX. Myo-inositol improves the host's ability to eliminate balofloxacin-resistant Escherichia coli. Sci Rep 2015; 5:10720. [PMID: 26030712 PMCID: PMC5377236 DOI: 10.1038/srep10720] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 04/29/2015] [Indexed: 12/11/2022] Open
Abstract
Antibiotic-resistant mechanisms are associated with fitness costs. However, why antibiotic-resistant bacteria usually show increasing adaptation to hosts is largely unknown, especially from the host's perspective. The present study reveals the host's varied response to balofloxacin-resistant Escherichia coli (BLFX-R) using an integrated proteome and metabolome approach and identifies myo-inositol and phagocytosis-related proteins as crucial biomarkers. Originally, macrophages have an optimal attractive preference to BLFX-S due to more polarization of BLFX-S than BLFX-R, which renders faster elimination to BLFX-S than BLFX-R. The slower elimination to BLFX-R may be reversed by exogenous myo-inositol. Primarily, myo-inositol depolarizes macrophages, elevating adherence to both BLFX-S and BLFX-R. Since the altered adherence is equal to both strains, the myo-inositol-treated macrophages are free of the barrier to BLFX-R and thereby promote phagocytosis of BLFX-R. This work provides a novel strategy based on metabolic modulation for eliminating antibiotic-resistant bacteria with a high degree of host adaptation.
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Affiliation(s)
- Xin-Hai Chen
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China
| | - Bing-Wen Zhang
- 1] Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China [2] Drug Discovery Pipeline, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, Guangdong, People's Republic of China
| | - Hui Li
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China
| | - Xuan-Xian Peng
- Center for Proteomics and Metabolomics, State Key Laboratory of Bio-Control, MOE Key Lab Aquat Food Safety, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou 510006, People's Republic of China
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Altered neutrophil functions in elderly patients during a 6-month follow-up period after a hip fracture. Exp Gerontol 2015; 65:58-68. [PMID: 25797136 DOI: 10.1016/j.exger.2015.03.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/16/2015] [Accepted: 03/18/2015] [Indexed: 11/20/2022]
Abstract
BACKGROUND Fracture of the hip (HF) is a significant cause of morbidity and mortality in elderly individuals. HF is an acute stress that triggers a state of inflammation which may affect immune responses and physical recovery. METHODS Longitudinal study of the impact of HF on the functions of polymorphonuclear neutrophils (PMNs) in elderly subjects. Data were recorded prior to surgery, 6weeks and 6months later. RESULTS PMN functions were severely impaired shortly after HF (chemotaxis, phagocytosis, superoxide production) but there was a time-related recovery of some PMN functions (chemotaxis, phagocytosis) over time, except in the case of superoxide production. Whereas FcγRII (CD32) expression remained unchanged, FcγRIII (CD16) increased from low values before surgery to levels of controls 6months post-surgery. This was also the case for the C5a complement receptor and CD11b. TLR2 and TLR4 expressions were unchanged. Cytokine and chemokine secretions by stimulated PMN were altered. TNFα and IL-10 secretions were increased following HF but IL-8 secretion was decreased. Impaired PMN functions prior to surgery were related to alterations in PI3K and NF-κB signaling pathways. Recovery of these functions paralleled increased PI3K activity, although superoxide production remained low. Sustained activation of the NF-κB pathway by TNFα has been reported to involve upregulation of IKKβ kinase activity. Activated IKKβ kinase inhibits ERK1/2 and results in concomitant downstream inhibition of NADPH oxidase complex which can account for sustained impaired production of ROS in HF patients. CONCLUSION Our data showed that the stress caused by HF negatively affects initial PMN responses shortly after the event and that may negatively influence clinical outcomes such as resolving long-term inflammation and recovery, as well as explaining susceptibility to opportunistic infections.
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Inpp5e increases the Rab5 association and phosphatidylinositol 3-phosphate accumulation at the phagosome through an interaction with Rab20. Biochem J 2015; 464:365-75. [PMID: 25269936 DOI: 10.1042/bj20140916] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Phosphoinositide 5'-phosphatases have been implicated in the regulation of phagocytosis. However, their precise roles in the phagocytic process are poorly understood. We prepared RAW264.7 macrophages deficient in Inpp5e (shInpp5e) to clarify the role of this lipid phosphatase. In the shInpp5e cells, the uptake of solid particles was increased and the rate of phagosome acidification was accelerated. As expected, levels of PtdIns(3,4,5)P3 and PtdIns(3,4)P2 were increased and decreased respectively, on the forming phagocytic cups of these cells. Unexpectedly, the most prominent consequence of the Inpp5e deficiency was the decreased accumulation of PtdIns3P and Rab5 on the phagosome. The expression of a constitutively active form of Rab5b in the shInpp5e cells rescued the PtdIns3P accumulation. Rab20 has been reported to regulate the activity of Rabex5, a guanine nucleotide exchange factor for Rab5. The association of Rab20 with the phagosome was remarkably abrogated in the shInpp5e cells. Over-expression of Rab20 increased phagosomal PtdIns3P accumulation and delayed its elimination. These results suggest that Inpp5e, through functional interactions with Rab20 on the phagosome, activates Rab5, which, in turn, increases PtdIns3P and delays phagosome acidification.
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Feng S, Zhu W. Bidirectional molecular transport shapes cell polarization in a two-dimensional model of eukaryotic chemotaxis. J Theor Biol 2014; 363:235-46. [DOI: 10.1016/j.jtbi.2014.08.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 08/17/2014] [Accepted: 08/18/2014] [Indexed: 12/17/2022]
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Jantan I, Ilangkovan M, Yuandani, Mohamad HF. Correlation between the major components of Phyllanthus amarus and Phyllanthus urinaria and their inhibitory effects on phagocytic activity of human neutrophils. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014. [PMCID: PMC4236485 DOI: 10.1186/1472-6882-14-429] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background Recently, we have highlighted the immunomodulatory activity of the standardized extracts of Phyllanthus amarus and P. urinaria. The present study was carried out to correlate between the prevalent constituents of the herbs and their inhibitory effects on phagocytic activity of human neutrophils. Methods The compounds, gallic acid, ellagic acid, corilagin, geraniin, phyllanthin and hypophyllanthin were identified and quantitatively analyzed in the extracts of Phyllanthus amarus and P. urinaria obtained from Malaysia and Indonesia by using a validated reversed phase high performance liquid chromatography (RP-HPLC) method. The standardized extracts and the pure compounds were evaluated for their effects on chemotaxis, β2 integrin (CD18) expression, phagocytosis and chemiluminescence of human phagocytes. Chemotactic activity was assessed using the Boyden chamber technique, inhibition of CD18 expression and phagocytic ability were tested with the aid of flow cytometry, while effect on the respiratory burst was investigated using a luminol-based chemiluminescence assay. Results All plant extracts strongly inhibited migration of the phagocytes with the Malaysian P. amarus depicting the highest inhibitory activity. Amongst the compounds tested, geraniin demonstrated the strongest inhibitory activity on chemotaxis of polymorphonuclear leukocytes (PMNs) and monocytes with IC50 values of 1.09 and 1.69 μM, respectively, which were lower than that of ibuprofen. All plant extracts and pure compounds exhibited high inhibitory activity on the oxidative burst of zymosan and PMA stimulated leukocytes. Geraniin and corilagin exhibited exceptionally strong inhibition on the reactive oxygen species (ROS) activity with IC50 values lower than aspirin. The plant extracts exhibited moderate inhibition of E. coli uptake by monocytes but weak effect on PMNs. Of all the compounds, phyllanthin at 50 μg/mL exhibited the highest engulfment inhibitory activity with percentage of phagocytizing cells of 14.2 and 27.1% for PMNs and monocytes, respectively. All plants and compounds tested possessed weak effect on CD18 expression on leukocytes except for hypophyllanthin and phyllanthin which exhibited significant inhibitory effect. Conclusion The strong inhibition of the extracts on the phagocytic activity of neutrophils was due to the presence of their major constituents especially geraniin, corilagin, phyllanthin and hypophllanthin which were able to modulate the innate response of phagocytes at different steps.
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Al-Jarallah A, Chen X, González L, Trigatti BL. High density lipoprotein stimulated migration of macrophages depends on the scavenger receptor class B, type I, PDZK1 and Akt1 and is blocked by sphingosine 1 phosphate receptor antagonists. PLoS One 2014; 9:e106487. [PMID: 25188469 PMCID: PMC4154704 DOI: 10.1371/journal.pone.0106487] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 08/04/2014] [Indexed: 01/12/2023] Open
Abstract
HDL carries biologically active lipids such as sphingosine-1-phosphate (S1P) and stimulates a variety of cell signaling pathways in diverse cell types, which may contribute to its ability to protect against atherosclerosis. HDL and sphingosine-1-phosphate receptor agonists, FTY720 and SEW2871 triggered macrophage migration. HDL-, but not FTY720-stimulated migration was inhibited by an antibody against the HDL receptor, SR-BI, and an inhibitor of SR-BI mediated lipid transfer. HDL and FTY720-stimulated migration was also inhibited in macrophages lacking either SR-BI or PDZK1, an adaptor protein that binds to SR-BI's C-terminal cytoplasmic tail. Migration in response to HDL and S1P receptor agonists was inhibited by treatment of macrophages with sphingosine-1-phosphate receptor type 1 (S1PR1) antagonists and by pertussis toxin. S1PR1 activates signaling pathways including PI3K-Akt, PKC, p38 MAPK, ERK1/2 and Rho kinases. Using selective inhibitors or macrophages from gene targeted mice, we demonstrated the involvement of each of these pathways in HDL-dependent macrophage migration. These data suggest that HDL stimulates the migration of macrophages in a manner that requires the activities of the HDL receptor SR-BI as well as S1PR1 activity.
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Affiliation(s)
- Aishah Al-Jarallah
- Department of Biochemistry and Biomedical Sciences, and the Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Xing Chen
- Department of Biochemistry and Biomedical Sciences, and the Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Leticia González
- Department of Biochemistry and Biomedical Sciences, and the Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Bernardo L. Trigatti
- Department of Biochemistry and Biomedical Sciences, and the Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada
- * E-mail:
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46
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Kumar S, Xu J, Kumar RS, Lakshmikanthan S, Kapur R, Kofron M, Chrzanowska-Wodnicka M, Filippi MD. The small GTPase Rap1b negatively regulates neutrophil chemotaxis and transcellular diapedesis by inhibiting Akt activation. ACTA ACUST UNITED AC 2014; 211:1741-58. [PMID: 25092872 PMCID: PMC4144729 DOI: 10.1084/jem.20131706] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Mice lacking the small GTPase Rap1b exhibit enhanced neutrophil recruitment to inflamed lungs and susceptibility to endotoxin shock via enhance PI3K-Akt activation. Neutrophils are the first line of cellular defense in response to infections and inflammatory injuries. However, neutrophil activation and accumulation into tissues trigger tissue damage due to release of a plethora of toxic oxidants and proteases, a cause of acute lung injury (ALI). Despite its clinical importance, the molecular regulation of neutrophil migration is poorly understood. The small GTPase Rap1b is generally viewed as a positive regulator of immune cell functions by controlling bidirectional integrin signaling. However, we found that Rap1b-deficient mice exhibited enhanced neutrophil recruitment to inflamed lungs and enhanced susceptibility to endotoxin shock. Unexpectedly, Rap1b deficiency promoted the transcellular route of diapedesis through endothelial cell. Increased transcellular migration of Rap1b-deficient neutrophils in vitro was selectively mediated by enhanced PI3K-Akt activation and invadopodia-like protrusions. Akt inhibition in vivo suppressed excessive Rap1b-deficient neutrophil migration and associated endotoxin shock. The inhibitory action of Rap1b on PI3K signaling may be mediated by activation of phosphatase SHP-1. Thus, this study reveals an unexpected role for Rap1b as a key suppressor of neutrophil migration and lung inflammation.
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Affiliation(s)
- Sachin Kumar
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH 45229 University of Cincinnati College of Medicine, Cincinnati OH 45229
| | - Juying Xu
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH 45229 University of Cincinnati College of Medicine, Cincinnati OH 45229
| | - Rupali Sani Kumar
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH 45229 University of Cincinnati College of Medicine, Cincinnati OH 45229
| | | | - Reuben Kapur
- Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Cancer Research Institute, Indianapolis, IN 46202
| | - Matthew Kofron
- Division of Developmental Biology, Cincinnati Children's Research Foundation, Cincinnati, OH 45229
| | | | - Marie-Dominique Filippi
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Research Foundation, Cincinnati, OH 45229 University of Cincinnati College of Medicine, Cincinnati OH 45229
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47
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Mulcahy LA, Pink RC, Carter DRF. Routes and mechanisms of extracellular vesicle uptake. J Extracell Vesicles 2014; 3:24641. [PMID: 25143819 PMCID: PMC4122821 DOI: 10.3402/jev.v3.24641] [Citation(s) in RCA: 1771] [Impact Index Per Article: 177.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 07/03/2014] [Accepted: 07/03/2014] [Indexed: 12/14/2022] Open
Abstract
Extracellular vesicles (EVs) are small vesicles released by donor cells that can be taken up by recipient cells. Despite their discovery decades ago, it has only recently become apparent that EVs play an important role in cell-to-cell communication. EVs can carry a range of nucleic acids and proteins which can have a significant impact on the phenotype of the recipient. For this phenotypic effect to occur, EVs need to fuse with target cell membranes, either directly with the plasma membrane or with the endosomal membrane after endocytic uptake. EVs are of therapeutic interest because they are deregulated in diseases such as cancer and they could be harnessed to deliver drugs to target cells. It is therefore important to understand the molecular mechanisms by which EVs are taken up into cells. This comprehensive review summarizes current knowledge of EV uptake mechanisms. Cells appear to take up EVs by a variety of endocytic pathways, including clathrin-dependent endocytosis, and clathrin-independent pathways such as caveolin-mediated uptake, macropinocytosis, phagocytosis, and lipid raft–mediated internalization. Indeed, it seems likely that a heterogeneous population of EVs may gain entry into a cell via more than one route. The uptake mechanism used by a given EV may depend on proteins and glycoproteins found on the surface of both the vesicle and the target cell. Further research is needed to understand the precise rules that underpin EV entry into cells.
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Affiliation(s)
- Laura Ann Mulcahy
- Department of Biological and Medical Science, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
| | - Ryan Charles Pink
- Department of Biological and Medical Science, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
| | - David Raul Francisco Carter
- Department of Biological and Medical Science, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, UK
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48
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Makino-Okamura C, Niki Y, Takeuchi S, Nishigori C, Declercq L, Yaroch DB, Saito N. Heparin inhibits melanosome uptake and inflammatory response coupled with phagocytosis through blocking PI3k/Akt and MEK/ERK signaling pathways in human epidermal keratinocytes. Pigment Cell Melanoma Res 2014; 27:1063-74. [DOI: 10.1111/pcmr.12287] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 06/19/2014] [Indexed: 12/28/2022]
Affiliation(s)
- Chieko Makino-Okamura
- Kobe Skin Research Department; Biosignal Research Center; Kobe University; Kobe Japan
| | - Yoko Niki
- Kobe Skin Research Department; Biosignal Research Center; Kobe University; Kobe Japan
| | - Seiji Takeuchi
- Division of Dermatology; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Chikako Nishigori
- Division of Dermatology; Department of Internal Related; Kobe University Graduate School of Medicine; Kobe Japan
| | - Lieve Declercq
- Biological Research Department Europe & Asia; Estée Lauder Companies; Oevel Belgium
| | | | - Naoaki Saito
- Kobe Skin Research Department; Biosignal Research Center; Kobe University; Kobe Japan
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49
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A polarized Ca2+, diacylglycerol and STIM1 signalling system regulates directed cell migration. Nat Cell Biol 2014; 16:133-44. [PMID: 24463606 PMCID: PMC3953390 DOI: 10.1038/ncb2906] [Citation(s) in RCA: 175] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 12/10/2013] [Indexed: 12/16/2022]
Abstract
Ca(2+) signals control cell migration by regulating forward movement and cell adhesion. However, it is not well understood how Ca(2+)-regulatory proteins and second messengers are spatially organized in migrating cells. Here we show that receptor tyrosine kinase and phospholipase C signalling are restricted to the front of migrating endothelial leader cells, triggering local Ca(2+) pulses, local depletion of Ca(2+) in the endoplasmic reticulum and local activation of STIM1, supporting pulsatile front retraction and adhesion. At the same time, the mediator of store-operated Ca(2+) influx, STIM1, is transported by microtubule plus ends to the front. Furthermore, higher Ca(2+) pump rates in the front relative to the back of the plasma membrane enable effective local Ca(2+) signalling by locally decreasing basal Ca(2+). Finally, polarized phospholipase C signalling generates a diacylglycerol gradient towards the front that promotes persistent forward migration. Thus, cells employ an integrated Ca(2+) control system with polarized Ca(2+) signalling proteins and second messengers to synergistically promote directed cell migration.
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50
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Sapey E, Greenwood H, Walton G, Mann E, Love A, Aaronson N, Insall RH, Stockley RA, Lord JM. Phosphoinositide 3-kinase inhibition restores neutrophil accuracy in the elderly: toward targeted treatments for immunosenescence. Blood 2014; 123:239-48. [PMID: 24191150 PMCID: PMC3888290 DOI: 10.1182/blood-2013-08-519520] [Citation(s) in RCA: 229] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 10/16/2013] [Indexed: 12/28/2022] Open
Abstract
Immunosenescence is the functional deterioration of the immune system during natural aging. Despite increased susceptibility to bacterial infections in older adults, age-associated changes to neutrophil responses are only partially understood, and neutrophil migration has not been characterized in detail. Here we describe reduced chemotaxis but preserved chemokinesis toward a range of inflammatory stimuli in migrating neutrophils isolated from healthy older subjects. Cross-sectional data indicate that migratory behavior changes in the sixth decade of life. Crucially, aberrant migration may increase "bystander" tissue damage and heighten inflammation as a result of excess proteinase release during inaccurate chemotaxis, as well as reducing pathogen clearance. We show evidence of increased neutrophil proteinase activity in older adults, namely, raised levels of neutrophil proteinase substrate-derived peptides and evidence of primary granule release, associated with increased systemic inflammation. Inaccurate migration was causally associated with increased constitutive phosphoinositide 3-kinase (PI3K) signaling; untreated neutrophils from old donors demonstrated significant PI3K activation compared with cells from young donors. PI3K-blocking strategies, specifically inhibition of PI3Kγ or PI3Kδ, restored neutrophil migratory accuracy, whereas SHIP1 inhibition worsened migratory flaws. Targeting PI3K signaling may therefore offer a new strategy in improving neutrophil functions during infections and reduce inappropriate inflammation in older patients.
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