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Lee SB, Park H, Lee JE, Kim KS, Jeon YH. In Vivo Optical Reporter-Gene-Based Imaging of Macrophage Infiltration of DNCB-Induced Atopic Dermatitis. Int J Mol Sci 2020; 21:ijms21176205. [PMID: 32867320 PMCID: PMC7503337 DOI: 10.3390/ijms21176205] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 11/16/2022] Open
Abstract
This study was conducted to monitor the macrophage infiltration of atopic dermatitis (AD)-like skin lesions and to evaluate the effects of anti-AD therapeutic agents in immunocompetent mice via optical reporter-gene-based molecular imaging. The enhanced firefly luciferase (effluc)-expressing macrophage cell line (Raw264.7/effluc) was intravenously introduced into mice with 2,4-dinitrochlorobenzene (DNCB)-induced AD, followed by bioluminescent imaging (BLI). After in vivo imaging, AD-like skin lesions were excised, and ex vivo imaging and Western blotting were conducted to determine the presence of infused macrophages. Finally, the therapeutic effect of dexamethasone (DEX), an AD-modulating agent, was evaluated via macrophage tracking. In vivo imaging with BLI revealed the migration of the reporter macrophages to DNCB-induced AD-like skin lesions on day 1 post-transfer. The greatest recruitment was observed on day 3, and a decline in BLI signal was observed on day 14. Notably, in vivo BLI clearly showed the inhibition of the reporter macrophage infiltration of DNCB-induced AD-like skin lesions by DEX, which was consistent with the reduced AD symptoms observed in DEX-treated mice. We successfully visualized the macrophage migration to DNCB-induced AD-like skin lesions, proving the feasibility of macrophage imaging for evaluating AD-regulating drugs in living organisms.
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Affiliation(s)
- Sang Bong Lee
- Korea Institute of Medical Microrobotics (KIMIRo), Gwangju 61011, Korea;
| | - Hyeonsoo Park
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 700-721, Korea; (H.P.); (J.-E.L.); (K.-S.K.)
- Research Center of Stickus Corporation, Haeundae-gu jaesong-dong 1050-21, Busan 48054, Korea
| | - Jae-Eon Lee
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 700-721, Korea; (H.P.); (J.-E.L.); (K.-S.K.)
- Department of Biomaterials Science, College of Natural Resources and Life Science/Life and Industry Convergence Research Institute, Pusan National University, Pusan 50463, Korea
| | - Kil-Soo Kim
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 700-721, Korea; (H.P.); (J.-E.L.); (K.-S.K.)
- College of Veterinary Medicine, Kyungpook National University, Daegu 700-721, Korea
| | - Yong Hyun Jeon
- Laboratory Animal Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 700-721, Korea; (H.P.); (J.-E.L.); (K.-S.K.)
- Leading-Edge Research Center for Drug Discovery and Development for Diabetes and Metabolic Disease, Kyungpook National University Hospital, Daegu 700-721, Korea
- Correspondence: ; Tel.: +82-53-790-5726
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Local Skin Inflammation in Cutaneous Leishmaniasis as a Source of Variable Pharmacokinetics and Therapeutic Efficacy of Liposomal Amphotericin B. Antimicrob Agents Chemother 2018; 62:AAC.00631-18. [PMID: 30082295 PMCID: PMC6153808 DOI: 10.1128/aac.00631-18] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 08/03/2018] [Indexed: 11/21/2022] Open
Abstract
Disfiguring skin lesions caused by several species of the Leishmania parasite characterize cutaneous leishmaniasis (CL). Successful treatment of CL with intravenous (i.v.) liposomal amphotericin B (LAmB) relies on the presence of adequate antibiotic concentrations at the dermal site of infection within the inflamed skin. Disfiguring skin lesions caused by several species of the Leishmania parasite characterize cutaneous leishmaniasis (CL). Successful treatment of CL with intravenous (i.v.) liposomal amphotericin B (LAmB) relies on the presence of adequate antibiotic concentrations at the dermal site of infection within the inflamed skin. Here, we have investigated the impact of the local skin inflammation on the pharmacokinetics (PK) and efficacy of LAmB in two murine models of localized CL (Leishmania major and Leishmania mexicana) at three different stages of disease (papule, initial nodule, and established nodule). Twenty-four hours after the administration of one 25 mg/kg of body weight LAmB (i.v.) dose to infected BALB/c mice (n = 5), drug accumulation in the skin was found to be dependent on the causative parasite species (L. major > L. mexicana) and the disease stage (papule > initial nodule > established nodule > healthy skin). Elevated tissue drug levels were associated with increased vascular permeability (Evans blue assay) and macrophage infiltration (histomorphometry) in the infected skin, two pathophysiological parameters linked to tissue inflammation. After identical treatment of CL in the two models with 5 × 25 mg/kg LAmB (i.v.), intralesional drug concentrations and reductions in lesion size and parasite load (quantitative PCR [qPCR]) were all ≥2-fold higher for L. major than for L. mexicana. In conclusion, drug penetration of LAmB into CL skin lesions could depend on the disease stage and the causative Leishmania species due to the influence of local tissue inflammation.
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Dubey S, Yoon H, Cohen MS, Nagarkatti P, Nagarkatti M, Karan D. Withaferin A Associated Differential Regulation of Inflammatory Cytokines. Front Immunol 2018; 9:195. [PMID: 29479354 PMCID: PMC5811468 DOI: 10.3389/fimmu.2018.00195] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 01/23/2018] [Indexed: 12/16/2022] Open
Abstract
A role of inflammation-associated cytokines/chemokines has been implicated in a wide variety of human diseases. Here, we investigated the regulation of inflammatory cytokines released by monocyte-derived THP-1 cells following treatment with the dietary agent withaferin A (WFA). Membrane-based cytokine array profiling of the culture supernatant from adenosine triphosphate-stimulated WFA-treated THP-1 cells showed differential regulation of multiple cytokines/chemokines. A selected group of cytokines/chemokines [interleukin-1 beta (IL-1β), CCL2/MCP-1, granulocyte-macrophage colony stimulating factor, PDGF-AA, PTX3, cystatin-3, relaxin-2, TNFRSF8/CD30, and ACRP30] was validated at the transcription level using qPCR. In silico analysis for transcriptional binding factors revealed the presence of nuclear factor-kappa B (NF-κB) in a group of downregulated cytokine gene promoters. WFA treatment of THP-1 cells blocks the nuclear translocation of NF-kB and corresponds with the reduced levels of cytokine secretion. To further understand the differential expression of cytokines/chemokines, we showed that WFA alters the nigericin-induced co-localization of NLRP3 and ASC proteins, thereby inhibiting caspase-1 activation, which is responsible for the cleavage and maturation of pro-inflammatory cytokines IL-1β and IL-18. These data suggest that dietary agent WFA concurrently targets NF-κB and the inflammasome complex, leading to inhibition of IL-1β and IL-18, respectively, in addition to differential expression of multiple cytokines/chemokines. Taken together, these results provide a rationale for using WFA to further explore the anti-inflammatory mechanism of cytokines/chemokines associated with inflammatory diseases.
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Affiliation(s)
- Seema Dubey
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Hyunho Yoon
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Mark Steven Cohen
- Department of Surgery, University of Michigan, Ann Arbor, MI, United States
| | - Prakash Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Dev Karan
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
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Akinrinmade OA, Chetty S, Daramola AK, Islam MU, Thepen T, Barth S. CD64: An Attractive Immunotherapeutic Target for M1-type Macrophage Mediated Chronic Inflammatory Diseases. Biomedicines 2017; 5:biomedicines5030056. [PMID: 28895912 PMCID: PMC5618314 DOI: 10.3390/biomedicines5030056] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/01/2017] [Accepted: 09/04/2017] [Indexed: 12/12/2022] Open
Abstract
To date, no curative therapy is available for the treatment of most chronic inflammatory diseases such as atopic dermatitis, rheumatoid arthritis, or autoimmune disorders. Current treatments require a lifetime supply for patients to alleviate clinical symptoms and are unable to stop the course of disease. In contrast, a new series of immunotherapeutic agents targeting the Fc γ receptor I (CD64) have emerged and demonstrated significant clinical potential to actually resolving chronic inflammation driven by M1-type dysregulated macrophages. This subpopulation plays a key role in the initiation and maintenance of a series of chronic diseases. The novel recombinant M1-specific immunotherapeutics offer the prospect of highly effective treatment strategies as they have been shown to selectively eliminate the disease-causing macrophage subpopulations. In this review, we provide a detailed summary of the data generated, together with the advantages and the clinical potential of CD64-based targeted therapies for the treatment of chronic inflammatory diseases.
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Affiliation(s)
- Olusiji A Akinrinmade
- South African Research Chair in Cancer Biotechnology, Institute of Infectious Disease and Molecular Medicine (IDM), Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, 7925 Cape Town, South Africa.
| | - Shivan Chetty
- South African Research Chair in Cancer Biotechnology, Institute of Infectious Disease and Molecular Medicine (IDM), Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, 7925 Cape Town, South Africa.
| | - Adebukola K Daramola
- South African Research Chair in Cancer Biotechnology, Institute of Infectious Disease and Molecular Medicine (IDM), Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, 7925 Cape Town, South Africa.
| | - Mukit-Ul Islam
- South African Research Chair in Cancer Biotechnology, Institute of Infectious Disease and Molecular Medicine (IDM), Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, 7925 Cape Town, South Africa.
| | - Theo Thepen
- Institute for Transfusion Medicine and Immunohematology and Blood Bank. University Hospital Magdeburg A.ö.R, 39120 Magdeburg, Germany.
| | - Stefan Barth
- South African Research Chair in Cancer Biotechnology, Institute of Infectious Disease and Molecular Medicine (IDM), Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, 7925 Cape Town, South Africa.
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Anti-inflammatory activities of Dangyuja (Citrus grandis Osbeck) in concanavalin A stimulated murine splenocytes and 12-O-tetradecanoylphorbol-13-acetate-induced murine skin edema. Biomed Pharmacother 2016; 83:1353-1364. [DOI: 10.1016/j.biopha.2016.08.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/04/2016] [Accepted: 08/16/2016] [Indexed: 01/01/2023] Open
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Yang IJ, Lee DU, Shin HM. Anti-inflammatory and antioxidant effects of coumarins isolated fromFoeniculum vulgarein lipopolysaccharide-stimulated macrophages and 12-O-tetradecanoylphorbol-13-acetate-stimulated mice. Immunopharmacol Immunotoxicol 2015; 37:308-17. [DOI: 10.3109/08923973.2015.1038751] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Jung JW, Kim SJ, Ahn EM, Oh SR, Lee HJ, Jeong JA, Lee JY. Ribes fasciculatum var. chinense Attenuated Allergic Inflammation In Vivo and In Vitro. Biomol Ther (Seoul) 2014; 22:547-52. [PMID: 25489423 PMCID: PMC4256035 DOI: 10.4062/biomolther.2014.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 08/11/2014] [Accepted: 09/02/2014] [Indexed: 11/06/2022] Open
Abstract
Ribes fasciculatum var. chinense MAX. (R. fasciculatum) has traditionally been used in Korea to treat inflammatory diseases. However, the exact mechanism that accounts for the anti-inflammatory effect of R. fasciculatum is not completely understood. We aimed to ascertain the pharmacological effects of R. fasciculatum on both compound 48/80- or histamine-induced scratching behaviors and 2, 4-dinitrochlorobenzene (DNCB)-induced atopic dermatitis (AD) in mice. Additionally, to find a possible explanation for the anti-inflammatory effects of R. fasciculatum, we evaluated the effects of R. fasciculatum on the production of inflammatory mediators in LPS-stimulated macrophage cells. Treatment of R. fasciculatum significantly reduced compound 48/80- or histamine-induced the pruritus in mice. R. fasciculatum attenuated the AD symptoms such as eczematous, erythema and dryness and serum IgE levels in AD model. Additionally, R. fasciculatum inhibited the production of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). The maximal rates of TNF-α and IL-6 inhibition by R. fasciculatum (1 mg/ml) were approximately 32.12% and 46.24%, respectively. We also showed that R. fasciculatum inhibited the activation of nuclear factor-kappa B in LPS-stimulated macrophages. Collectively, the findings of this study provide us with novel insights into the pharmacological actions of R. fasciculatum as a potential molecule for use in the treatment of allergic inflammatory diseases.
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Affiliation(s)
- Ji-Wook Jung
- Department of Herbal Medicinal Pharmacology, College of Health and Welfare, Daegu Haany University, Gyeongsan 712-715
| | - Su-Jin Kim
- Department of Herbal Medicinal Pharmacology, College of Health and Welfare, Daegu Haany University, Gyeongsan 712-715
| | - Eun-Mi Ahn
- Department of Herbal Medicinal Pharmacology, College of Health and Welfare, Daegu Haany University, Gyeongsan 712-715
| | - Sa-Rang Oh
- Department of Herbal Medicinal Pharmacology, College of Health and Welfare, Daegu Haany University, Gyeongsan 712-715
| | - Hye-Ja Lee
- Department of Herbal Medicinal Pharmacology, College of Health and Welfare, Daegu Haany University, Gyeongsan 712-715
| | - Ji-Ahn Jeong
- Department of Herbal Medicinal Pharmacology, College of Health and Welfare, Daegu Haany University, Gyeongsan 712-715
| | - Ju-Young Lee
- Department of Herbal Medicinal Pharmacology, College of Health and Welfare, Daegu Haany University, Gyeongsan 712-715
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Hwang WS, Kim HI, Kim YJ, Kang BC, Lee HS, Oh KH, Lee DS, Yeom SC. Pregnancy in postpartum estrus induces inflammatory milk production and catagen specific pup skin inflammation in interleukin-10 deficient mice. J Dermatol Sci 2013; 72:225-32. [PMID: 23928228 DOI: 10.1016/j.jdermsci.2013.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 07/15/2013] [Accepted: 07/16/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND The interleukin 10 deficient mice (IL-10(-/-)) showed high incidence of pup alopecia compared to other strains, and pup alopecia was caused by skin inflammation and was recoverable. Pup alopecia of B6.IL-10(-/-) might be related with maternal factor and interleukin-10 deficient phenotype. OBJECTIVE The objectives of this study were elucidating of maternal factors for inflammatory milk production and characterization of pup alopecia in IL-10(-/-) mice. METHODS Incidences of pup alopecia were analyzed with 13 breeding cases. Comparison between control and alopecia pups and its dams, were conducted with histological examination (H&E, TUNEL assay, immunohistochemistry for F4/80, iNOS, CD206, Gr-1, CD4, CD8, CD11c and CD326), fostering test, forced weaning test, qPCR for tyrosine hydroxylase, flow cytometry, IL-10 inhibition test, BMDM stimulation test and LC/MS analysis. RESULTS Presence of pregnancy in postpartum estrus showed significant correlation with inflammatory milk production and mammary gland involution in B6.IL-10(-/-) mice. There were no different mass in inflammatory milk, but different ionization intensity was detected. Inflammatory milk directly induced hepatocyte steatosis, catagen stage specific hair breaking and alopeicia in pups. Histologically, hypertropy of outer root sheath and macrophage/neutrophil infiltration were typical. CONCLUSION B6.IL-10(-/-) dam with stress such as PPE could produce untimely mammary gland involution and inflammatory milk production. Interleukin 10 is important for maternal stress regulation and protecting inflammatory milk production, also influence severity of pup skin inflammation and alopecia. Remarkably, inflammatory milk induced hepatocyte steatosis, and it could indicate there is abnormal lipid metabolism. This was first report for catagen specific alopecia in mouse.
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Affiliation(s)
- Woo-Sung Hwang
- Biomedical Center for Animal Resource and Development, Seoul National University College of Medicine, Seoul 110-799, Republic of Korea
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Kasraie S, Niebuhr M, Kopfnagel V, Dittrich-Breiholz O, Kracht M, Werfel T. Macrophages from patients with atopic dermatitis show a reduced CXCL10 expression in response to staphylococcal α-toxin. Allergy 2012; 67:41-9. [PMID: 21906079 DOI: 10.1111/j.1398-9995.2011.02710.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Patients with atopic dermatitis (AD) are frequently colonized with Staphylococcus aureus (S. aureus), one-third of them producing α-toxin, which is correlated with the severity of eczema in AD. Staphylococcus aureus colonizes in patients with psoriasis as well. Distinct expression of chemokine (C-C motif) ligand (CCL) and chemokine (C-X-C motif) ligand (CXCL) chemokines has been documented in both diseases. In this study, we investigated the effects of sublytic α-toxin concentrations on human macrophages that accumulate in the skin of patients with AD and psoriasis. METHODS IFN-γ-induced protein of 10-kDa (IP-10)/CXCL10 and macrophage-derived chemokine (MDC)/CCL22 production were evaluated at the mRNA or at the protein level using qRT-PCR or ELISA, respectively. Cell surface markers' expression and chemotaxis were determined by flow cytometry and Boyden chamber technique, respectively. RESULTS Sublytic concentrations of α-toxin strongly induced CXCL10 in macrophages at both the mRNA and the protein levels and significantly up-regulated MHC class II expression. Supernatants of α-toxin-stimulated macrophages induced the migration of human CD4+ lymphocytes via the CXCL10 receptor (CXCR3). Macrophages from patients with AD produced lower levels of CXCL10 compared to cells from patients with psoriasis as well as healthy controls in response to α-toxin. α-Toxin did not lead to a large variation in CCL22 production in macrophages from all three groups. CONCLUSIONS Staphylococcal α-toxin contributes to Th1 polarization by induction of CXCL10 in macrophages. Macrophages from patients with AD and psoriasis responded to α-toxin in the induction of Th1-related chemokine CXCL10 diversely, which could favour the recruitment of distinct leucocyte subsets into the skin.
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Affiliation(s)
- S Kasraie
- Division of Immunodermatology and Allergy Research, Department of Dermatology and Allergy, Hannover Medical School, Carl-Neuburg-Strasse 1, Hannover,Germany.
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Ding AG, Shenderova A, Schwendeman SP. Prediction of microclimate pH in poly(lactic-co-glycolic acid) films. J Am Chem Soc 2007; 128:5384-90. [PMID: 16620110 DOI: 10.1021/ja055287k] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An equilibrium mathematical model that accurately predicts microclimate pH (mupH) in thin biodegradable polymer films of poly(lactic-co-glycolic acid) (PLGA) is described. mupH kinetics was shown to be primarily a function of: (i) kinetics of water-soluble acid content and composition in the polymer matrix and (ii) polymer/water partition coefficient of water-soluble degradation products (P(i)). Polymers were coated on standard pH glass electrodes, and mupH was measured potentiometrically. Water-soluble acid distribution and content in PLGA films were determined by pre-derivatization HPLC. Polymer degradation products partitioned favorably in the polymer phase relative to water (P(i) range: approximately 6-100), and P(i) increased with increasing hydrophobicity of the acidic species according to a linear free energy law related to reversed phase HPLC retention time for the corresponding derivatized bromophenacyl esters. The mupH predicted by the model was in excellent agreement with experimental mupH for several PLGAs as a function of time and PLGA lactic/glycolic acid ratio. These data may be useful to slowly release pH-sensitive PLGA-encapsulated bioactive substances and provide a general framework for predicting partitioning behavior of degradation products in biodegradable polymers.
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Affiliation(s)
- Amy G Ding
- Department of Pharmaceutical Sciences, The University of Michigan, Ann Arbor, Michigan 48109-1065, USA
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Murua A, de Castro M, Orive G, Hernández RM, Pedraz JL. In Vitro Characterization and In Vivo Functionality of Erythropoietin-Secreting Cells Immobilized in Alginate−Poly-l-Lysine−Alginate Microcapsules. Biomacromolecules 2007; 8:3302-7. [DOI: 10.1021/bm070194b] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Murphy MB, Hartgerink JD, Goepferich A, Mikos AG. Synthesis and in vitro hydroxyapatite binding of peptides conjugated to calcium-binding moieties. Biomacromolecules 2007; 8:2237-43. [PMID: 17530891 DOI: 10.1021/bm070121s] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To confer bone-binding properties to proteins and other biological agents that lack specific targeting capacity, model peptide-based molecules were synthesized containing poly(aspartic acid), poly(glutamic acid), or a bisphosphonate (pamidronate). These motifs have well-documented affinities to hydroxyapatite, a property desirable for the targeting of molecules to bone for drug delivery and tissue engineering applications. Model peptides of increasing molecular mass (5-33 amino acids) were directly conjugated to eight aspartic acids (Asp8), eight glutamic acids (Glu8), or pamidronate, purified by high-performance liquid chromatography, and characterized by matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectroscopy. The modified peptides were incubated with hydroxyapatite in phosphate-buffered saline at physiological conditions over 24 h. This study revealed a significant amount (>90%) of conjugated peptides adsorbed to the hydroxyapatite as compared to unmodified peptides (<5%). It was found that while there were significant differences between the different hydroxyapatite-binding and control groups for all time points, the size of the peptide had no statistical effect on peptide-hydroxyapatite binding. These results demonstrate that bisphosphonate and oligopeptide conjugates hold great promise for the development of new bioactive molecules for bone-specific applications.
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Affiliation(s)
- Matthew B Murphy
- Department of Bioengineering, Rice University, Houston, TX 77251-1892, USA
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Korcheva V, Wong J, Lindauer M, Jacoby DB, Iordanov MS, Magun B. Role of apoptotic signaling pathways in regulation of inflammatory responses to ricin in primary murine macrophages. Mol Immunol 2007; 44:2761-71. [PMID: 17257680 PMCID: PMC1880874 DOI: 10.1016/j.molimm.2006.10.025] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2006] [Accepted: 10/20/2006] [Indexed: 01/20/2023]
Abstract
Because of its lethal effects, ease of preparation, and ability to be delivered by aerosolization, ricin has been developed as a lethal weapon by various terrorist groups. When introduced into the pulmonary system of rodents, ricin causes pathological changes in the lung that are known to occur in acute respiratory distress syndrome (ARDS). Early response cytokines such as TNF-alpha and IL-1 are known to play a critical role in the pathogenesis of ARDS. Ricin induces the release of these pro-inflammatory cytokines and the transcriptional activation of the genes that encode them in vitro and in vivo. Macrophages, considered to act as upstream regulators of inflammatory cascades, may play a central role in the pathogenesis and the development of ricin-induced ARDS because of their ability to make and secrete pro-inflammatory cytokines. Exposure of primary macrophages to ricin in vitro led to activation of stress-activated protein kinases, increased expression of pro-inflammatory mRNA transcripts, subsequent increase in the synthesis and secretion of TNF-alpha, and apoptotic cell death. Interestingly, macrophages required the engagement of the apoptotic cascade for the maximal synthesis and release of some pro-inflammatory mediators. This work identifies a cross talk between the apoptotic and inflammatory signaling pathways induced by ricin in primary macrophages.
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Affiliation(s)
- Veselina Korcheva
- Department of Cell and Developmental Biology, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, USA
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Jain S, Yap WT, Irvine DJ. Synthesis of protein-loaded hydrogel particles in an aqueous two-phase system for coincident antigen and CpG oligonucleotide delivery to antigen-presenting cells. Biomacromolecules 2005; 6:2590-600. [PMID: 16153096 DOI: 10.1021/bm0503221] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Materials that effectively deliver protein antigens together with activating ligands to antigen-presenting cells are sought for improved nonviral vaccines. To this end, we synthesized protein-loaded poly(ethylene glycol) (PEG)-based hydrogel particles by cross-linking PEG within the polymer-rich phase of an emulsion formed by a poly(ethylene oxide-b-propylene oxide-b-ethylene oxide) triblock copolymer in saturated aqueous salt solution. These particles (500-nm diameter) contained high levels of encapsulated protein (approximately 75% of dry mass), which was selectively released by proteolytic enzymes normally present in the phagosomal/endosomal compartments of dendritic cells (DCs). For co-delivery of cellular activation signals, gel particles were surface-modified by sequential adsorption of poly(l-arginine) and CpG oligonucleotides. DCs pulsed with protein-loaded particles activated naïve T cells in vitro approximately 10-fold more efficiently than DCs incubated with soluble protein. This organic solvent-free strategy for protein encapsulation within submicron-sized hydrophilic particles is attractive for macromolecule delivery to a variety of phagocytic and nonphagocytic cells.
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Affiliation(s)
- Siddhartha Jain
- Biological Engineering Division, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Abstract
Inflammation is the common denominator to the postnatal events that overlap with lymphatic vessel growth, or lymphangiogenesis. Undoubtedly, inflammation and accompanying fluid overload are cardinal factors in wound healing, lymphedema, the pathogenesis of some forms of lymphangiomatosis, and solid tumor lymphangiogenesis. The assertion that inflammation actually triggers lymphangiogenesis lies in the evidence set forth below that inflammation is the usual precursor to tissue repair and regeneration. Moreover, the panel of pro-inflammatory and anti-inflammatory molecules that orchestrates the inflammatory response abounds with cytokines and chemokines that foster survival, migration, and proliferation of lymphatic endothelial cells. Finally, both interstitial fluid overload and increased demand for removal of leukocytes can benefit from lymphangiogenesis, although the mechanisms controlling the exit of leukocytes from tissues via the lymphatics are practically unknown. The pertinent question actually is how and why inflammation presents with formation of new lymph vessels in liver fibrosis but not in rheumatoid arthritis. One possible explanation is that organ-specific histological and functional properties of the lymphatic endothelium gauge their response to death, survival, and proliferative factors. Alternatively, the decision to remain quiescent, proliferate or regress resides within the stroma microenvironment.
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Affiliation(s)
- Carla Mouta
- Center for Molecular Medicine, Maine Medical Center Research Institute, Scarborough, Maine 04074, USA.
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van Roon JAG, Bijlsma JWJ, van de Winkel JGJ, Lafeber FPJG. Depletion of synovial macrophages in rheumatoid arthritis by an anti-FcgammaRI-calicheamicin immunoconjugate. Ann Rheum Dis 2004; 64:865-70. [PMID: 15539412 PMCID: PMC1755535 DOI: 10.1136/ard.2004.028845] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Monocytes/macrophages have an important and versatile role in joint inflammation and destruction in rheumatoid arthritis (RA). OBJECTIVE To determine the efficiency of monocyte/macrophage elimination by a new drug conjugated antibody (CD64-calicheamicin (CD64-CaMi)) directed to the high affinity receptor for IgG (FcgammaRI). METHODS Mononuclear cells from peripheral blood and synovial fluid of patients with RA were cultured in the presence of CD64-CaMi. Cell death of monocytes/macrophages was measured by analysis of phenotypic changes (light scatter patterns, CD14 expression, and FcgammaRI expression) and nuclear DNA fragmentation. The selectivity of CD64-CaMi was checked by using FcgammaRI deficient and FcgammaRI transfected cell lines. In addition, the indirect effect of CD64-CaMi-induced macrophage cell death on arthritogenic T(h1) cell activity was determined. RESULTS Inflammatory macrophages from RA synovial fluid, expressing increased FcgammaRI levels, were efficiently killed by CD64-CaMi through induction of DNA fragmentation. CD64-CaMi-induced cell death of monocytes/macrophages from peripheral blood of patients with RA proved less efficient. Induction of synovial macrophage death by CD64-CaMi was accompanied by efficient inhibition of proinflammatory T(h1) cytokine production. CONCLUSION Together, the presented data suggest that elimination of macrophages through a new FcgammaRI directed CD64-CaMi is feasible. Because monocytes from peripheral blood are also eliminated by this immunoconjugate, additional experimental studies should validate its potential for local (intra-articular) application in the treatment of RA.
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Affiliation(s)
- J A G van Roon
- Department of Rheumatology and Clinical Immunology, University Medical Centre Utrecht, F02.127, PO Box 85500, 3508 GA Utrecht, The Netherlands.
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Bosset S, Bonnet-Duquennoy M, Barré P, Chalon A, Kurfurst R, Bonté F, Schnébert S, Le Varlet B, Nicolas JF. Photoageing shows histological features of chronic skin inflammation without clinical and molecular abnormalities. Br J Dermatol 2003; 149:826-35. [PMID: 14616376 DOI: 10.1046/j.1365-2133.2003.05456.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Photodamage is characterized by degradation of collagen and accumulation of abnormal elastin in the superficial dermis. Mast cells and macrophages, which are found in higher numbers in photoaged skin, have been implicated in this process. OBJECTIVES To analyse the phenotype of haematopoietic-derived infiltrating cells in photodamaged skin. METHODS Chronically sun-exposed (preauricular) and control sun-protected (postauricular) skin was recovered from eight healthy subjects undergoing cosmetic surgery (facial lifting). RESULTS Histological analysis showed that sun-exposed skin harboured more infiltrating mononuclear cells than sun-protected skin. Cellular infiltrates were found at the periphery of areas of elastolysis around hair follicles in sun-exposed sites, whereas they were found in the interfollicular dermis around blood vessels and around hair follicles in sun-protected samples. Immunohistochemical analysis revealed an increased number of mast cells, macrophages and CD4+ CD45RO+ T cells in sun-exposed dermis as well as a higher number of CD1a+ dendritic cells in sun-exposed epidermis, compared with the sun-protected samples. Thus photoageing displays histological features of chronic skin inflammation. However, no molecular sign of inflammation was observed and we even found a decreased expression of interleukin-1beta mRNA in sun-exposed compared with sun-protected sites. Furthermore, the patients' skin looked normal and did not display any clinical inflammation. CONCLUSIONS Collectively, these data show that chronic ultraviolet irradiation induces alterations of innate immune cells which are recruited in sun-exposed skin without being activated.
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Affiliation(s)
- S Bosset
- INSERM U503, Université Claude Bernard et Hospices Civils de Lyon, 21 Av. Tony Garnier, 69007 Lyon, France.
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van Roon JAG, van Vuuren AJ, Wijngaarden S, Jacobs KMG, Bijlsma JWJ, Lafeber FPJG, Thepen T, van de Winkel JGJ. Selective elimination of synovial inflammatory macrophages in rheumatoid arthritis by an Fcgamma receptor I-directed immunotoxin. ARTHRITIS AND RHEUMATISM 2003; 48:1229-38. [PMID: 12746896 DOI: 10.1002/art.10940] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To determine whether monocyte/macrophages from rheumatoid arthritis (RA) patients can be selectively eliminated by a toxin-conjugated antibody CD64-ricin A (CD64-RiA) directed toward the high-affinity receptor for IgG (FcgammaRI), exploiting the capacity of FcgammaRI to efficiently endocytose antibody which it has bound. METHODS Mononuclear cells from peripheral blood (PB) and synovial fluid (SF) obtained from RA patients were cultured in the presence of CD64-RiA. Cell death of monocyte/macrophages was measured by phenotypic changes (light-scatter patterns and CD14 and FcgammaRI expression) and apoptosis (nuclear DNA fragmentation). We then tested whether CD64-RiA-induced cell death of macrophages affected their capacity to stimulate antigen-induced lymphocyte proliferation and to secrete cytokines. Additionally, the capacity of CD64-RiA to inhibit proinflammatory activity and cartilage degradation by RA synovial tissue explants was evaluated. RESULTS Inflammatory macrophages from RA SF expressed elevated levels of FcgammaRI and were selectively eliminated by CD64-RiA via apoptotic cell death. Monocyte/macrophages from RA PB, which had lower levels of FcgammaRI expression, were much less affected. Induction of SF macrophage apoptosis was associated with efficient inhibition of antigen-induced lymphocyte proliferation and a reduction in tumor necrosis factor alpha (TNFalpha) release. Consistent with these effects on SF macrophages, CD64-RiA also inhibited TNFalpha production, interleukin-1beta production, and cartilage-degrading activity of RA synovial tissue explants. CONCLUSION Together, these data underscore the crucial role of synovial macrophages in RA joint inflammation and indicate that selective elimination of these cells through FcgammaRI-directed immunotoxins could be a novel approach to the treatment of RA.
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Zhang Y, Chirmule N, Gao GP, Qian R, Croyle M, Joshi B, Tazelaar J, Wilson JM. Acute cytokine response to systemic adenoviral vectors in mice is mediated by dendritic cells and macrophages. Mol Ther 2001; 3:697-707. [PMID: 11356075 DOI: 10.1006/mthe.2001.0329] [Citation(s) in RCA: 308] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
We investigated the cellular basis for secretion of inflammatory cytokines in mice following intravenous administration of adenoviral vectors (Ad). Serum inflammatory cytokines including interleukin-6 (IL-6), IL-12, and tumor necrosis factor-alpha (TNF-alpha) were detected as early as 6 h following intravenous injection of Ad-expressing Escherichia coli beta-galactosidase (Ad-lacZ). Ad-lacZ readily accumulated in the splenic marginal zone 1 h after intravenous infusion, where both dendritic cells (DCs) and macrophages were transduced and activated within 6 h. Flow cytometric analyses showed that the expression of Ia and CD86 antigens was markedly enhanced on splenic DCs indicating their activation in vivo by Ad-lacZ. Upon ex vivo culture, these early-activated splenic DCs spontaneously produced high levels of IL-6 and IL-12. By contrast, activated splenic macrophages spontaneously secreted only IL-6. Elimination of tissue macrophages and splenic DCs in vivo considerably reduced the early release of IL-12, IL-6, and TNF-alpha and significantly blocked the specific cellular immune response to Ad and the transgene product in vivo. Our findings indicate that preferential activation of DCs and macrophages may account for Ad-triggered acute inflammatory response in vivo in mice. Moreover, DCs and macrophages may play different roles in this process in terms of their abilities to produce distinct patterns of inflammatory cytokines.
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Affiliation(s)
- Y Zhang
- Institute for Human Gene Therapy, University of Pennsylvania, Philadelphia, PA 19104, USA
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