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Paun RA, Dumut DC, Centorame A, Thuraisingam T, Hajduch M, Mistrik M, Dzubak P, De Sanctis JB, Radzioch D, Tabrizian M. One-Step Synthesis of Nanoliposomal Copper Diethyldithiocarbamate and Its Assessment for Cancer Therapy. Pharmaceutics 2022; 14:pharmaceutics14030640. [PMID: 35336014 PMCID: PMC8952320 DOI: 10.3390/pharmaceutics14030640] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022] Open
Abstract
The metal complex copper diethyldithiocarbamate (CuET) induces cancer cell death by inhibiting protein degradation and induces proteotoxic stress, making CuET a promising cancer therapeutic. However, no clinical formulation of CuET exists to date as the drug is insoluble in water and exhibits poor bioavailability. To develop a scalable formulation, nanoliposomal (LP) CuET was synthesized using ethanol injection as a facile one-step method that is suitable for large-scale manufacturing. The nanoparticles are monodispersed, colloidally stable, and approximately 100 nm in diameter with an encapsulation efficiency of over 80%. LP-CuET demonstrates excellent stability in plasma, minimal size change, and little drug release after six-month storage at various temperatures. Additionally, melanoma cell lines exhibit significant sensitivity to LP-CuET and cellular uptake occurs predominantly through endocytosis in YUMM 1.7 cancer cells. Intracellular drug delivery is mediated by vesicle acidification with more nanoparticles being internalized by melanoma cells compared with RAW 264.7 macrophages. Additionally, the nanoparticles preferentially accumulate in YUMM 1.7 tumors where they induce cancer cell death in vivo. The development and characterization of a stable and scalable CuET formulation illustrated in this study fulfils the requirements needed for a potent clinical grade formulation.
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Affiliation(s)
- Radu A. Paun
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, 3775 Rue University, Montreal, QC H3A 2B6, Canada;
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
| | - Daciana C. Dumut
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Amanda Centorame
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Thusanth Thuraisingam
- Division of Dermatology, Department of Medicine, Jewish General Hospital, McGill University, 3755 Cote Ste-Catherine, Montreal, QC H3T 1E2, Canada;
- Division of Dermatology, Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON K1H 8M5, Canada
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Martin Mistrik
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Petr Dzubak
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Juan B. De Sanctis
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hnevotinska 1333/5, 77900 Olomouc, Czech Republic; (M.H.); (M.M.); (P.D.); (J.B.D.S.)
- Czech Advanced Technology and Research Institute, Palacky University Olomouc, Krizkovskeho 511/8, 77900 Olomouc, Czech Republic
| | - Danuta Radzioch
- Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada; (D.C.D.); (A.C.); (D.R.)
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine and Health Sciences, McGill University, 3775 Rue University, Montreal, QC H3A 2B6, Canada;
- Faculty of Dentistry and Oral Health Sciences, McGill University, 3640 Rue University, Montreal, QC H3A 0C7, Canada
- Correspondence:
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Chávez-Castillo M, Ortega Á, Cudris-Torres L, Duran P, Rojas M, Manzano A, Garrido B, Salazar J, Silva A, Rojas-Gomez DM, De Sanctis JB, Bermúdez V. Specialized Pro-Resolving Lipid Mediators: The Future of Chronic Pain Therapy? Int J Mol Sci 2021; 22:ijms221910370. [PMID: 34638711 PMCID: PMC8509014 DOI: 10.3390/ijms221910370] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/21/2021] [Accepted: 09/23/2021] [Indexed: 12/15/2022] Open
Abstract
Chronic pain (CP) is a severe clinical entity with devastating physical and emotional consequences for patients, which can occur in a myriad of diseases. Often, conventional treatment approaches appear to be insufficient for its management. Moreover, considering the adverse effects of traditional analgesic treatments, specialized pro-resolving lipid mediators (SPMs) have emerged as a promising alternative for CP. These include various bioactive molecules such as resolvins, maresins, and protectins, derived from ω-3 polyunsaturated fatty acids (PUFAs); and lipoxins, produced from ω-6 PUFAs. Indeed, SPMs have been demonstrated to play a central role in the regulation and resolution of the inflammation associated with CP. Furthermore, these molecules can modulate neuroinflammation and thus inhibit central and peripheral sensitizations, as well as long-term potentiation, via immunomodulation and regulation of nociceptor activity and neuronal pathways. In this context, preclinical and clinical studies have evidenced that the use of SPMs is beneficial in CP-related disorders, including rheumatic diseases, migraine, neuropathies, and others. This review integrates current preclinical and clinical knowledge on the role of SPMs as a potential therapeutic tool for the management of patients with CP.
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Affiliation(s)
- Mervin Chávez-Castillo
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Ángel Ortega
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Lorena Cudris-Torres
- Programa de Psicología, Fundación Universitaria del Área Andina sede Valledupar, Valledupar 200001, Colombia;
| | - Pablo Duran
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Milagros Rojas
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Alexander Manzano
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Bermary Garrido
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Juan Salazar
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Aljadis Silva
- Endocrine and Metabolic Diseases Research Center, School of Medicine, University of Zulia, Maracaibo 4004, Venezuela; (M.C.-C.); (Á.O.); (P.D.); (M.R.); (A.M.); (B.G.); (J.S.); (A.S.)
| | - Diana Marcela Rojas-Gomez
- Escuela de Nutrición y Dietética, Facultad de Medicina, Universidad Andres Bello, Santiago 8370035, Chile;
| | - Juan B. De Sanctis
- Institute of Molecular and Translational Medicine, Palacký University Olomouc, 77900 Olomouc, Czech Republic;
| | - Valmore Bermúdez
- Facultad de Ciencias de la Salud, Universidad Simón Bolívar, Barranquilla 080002, Colombia
- Correspondence:
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Annadurai N, De Sanctis JB, Hajdúch M, Das V. Tau secretion and propagation: Perspectives for potential preventive interventions in Alzheimer's disease and other tauopathies. Exp Neurol 2021; 343:113756. [PMID: 33989658 DOI: 10.1016/j.expneurol.2021.113756] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/26/2021] [Accepted: 05/10/2021] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease (AD) is characterised by the accumulation of intracytoplasmic aggregates of tau protein, which are suggested to spread in a prion-like manner between interconnected brain regions. This spreading is mediated by the secretion and uptake of tau from the extracellular space or direct cell-to-cell transmission through cellular protrusions. The prion-like tau then converts the endogenous, normal tau into pathological forms, resulting in neurodegeneration. The endoplasmic reticulum/Golgi-independent tau secretion through unconventional secretory pathways involves delivering misfolded and aggregated tau to the plasma membrane and its release into the extracellular space by non-vesicular and vesicular mechanisms. Although cytoplasmic tau was thought to be released only from degenerating cells, studies now show that cells constitutively secrete tau at low levels under physiological conditions. The mechanisms of secretion of tau under physiological and pathological conditions remain unclear. Therefore, a better understanding of these pathways is essential for developing therapeutic approaches that can target prion-like tau forms to prevent neurodegeneration progression in AD. This review focuses on unconventional secretion pathways involved in the spread of tau pathology in AD and presents these pathways as prospective areas for future AD drug discovery and development.
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Affiliation(s)
- Narendran Annadurai
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 5, 77900 Olomouc, Czech Republic
| | - Juan B De Sanctis
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 5, 77900 Olomouc, Czech Republic
| | - Marián Hajdúch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 5, 77900 Olomouc, Czech Republic
| | - Viswanath Das
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 5, 77900 Olomouc, Czech Republic.
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Ramírez H, Fernandez E, Rodrigues J, Mayora S, Martínez G, Celis C, De Sanctis JB, Mijares M, Charris J. Synthesis and antimalarial and anticancer evaluation of 7-chlorquinoline-4-thiazoleacetic derivatives containing aryl hydrazide moieties. Arch Pharm (Weinheim) 2021; 354:e2100002. [PMID: 33660349 DOI: 10.1002/ardp.202100002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/04/2021] [Accepted: 02/12/2021] [Indexed: 12/23/2022]
Abstract
Twelve 7-chloroquinoline derivatives were designed and synthesized using the principle of molecular hybridization through the coupling of 2-[2-(7-chloroquinolin-4-ylthio)-4-methylthiazol-5-yl]acetic acid 1 with various benzoyl hydrazines 2a-l. The synthetic compounds were tested as antimalarials. Some of them showed an efficient in vitro activity as inhibitors of β-hematin formation and an in vivo activity in a murine model, resulting in compounds 8 and 9 as the most active ones with IC50 values of 0.65 ± 0.09 and 0.64 ± 0.16 µM, respectively. The effects of the compounds on the cell viability, cell cycle, and apoptosis induction of A549 and MCF-7 cancer cell lines were also examined. Our data showed that compounds 6 and 12 were the most active agents, decreasing the cell viability of MCF-7 cells with IC50 values of 15.41 and 12.99 µM, respectively. None of the compounds analyzed significantly affected the viability of peripheral blood mononuclear cells. Also, significant induction of apoptosis was observed when both cancer cell lines were incubated with compounds 6 and 12. In MCF-7 cells, treatment with these compounds led to cell cycle arrest in the G0/G1 phase. The results obtained suggest that these structures may be useful in developing new therapies for malaria and cancer treatment.
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Affiliation(s)
- Hegira Ramírez
- Organic Synthesis Laboratory, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela.,Facultad de Medicina, Universidad de Las Américas, Quito, Ecuador
| | | | - Juan Rodrigues
- Departamento de Tecnología de Procesos Biológicos y Bioquímicos, División de Ciencias Biológicas, Universidad Simón Bolívar, Caracas, Venezuela
| | - Soriuska Mayora
- Biotechnology Unit, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela.,Institute of Immunology, Faculty of Medicine, Central University of Venezuela, Caracas, Venezuela
| | - Gricelis Martínez
- Institute of Immunology, Faculty of Medicine, Central University of Venezuela, Caracas, Venezuela
| | - Carmen Celis
- Biotechnology Unit, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela
| | - Juan B De Sanctis
- Institute of Immunology, Faculty of Medicine, Central University of Venezuela, Caracas, Venezuela.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Michael Mijares
- Biotechnology Unit, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela.,Institute of Immunology, Faculty of Medicine, Central University of Venezuela, Caracas, Venezuela
| | - Jaime Charris
- Organic Synthesis Laboratory, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela
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5
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Veltman M, De Sanctis JB, Stolarczyk M, Klymiuk N, Bähr A, Brouwer RW, Oole E, Shah J, Ozdian T, Liao J, Martini C, Radzioch D, Hanrahan JW, Scholte BJ. CFTR Correctors and Antioxidants Partially Normalize Lipid Imbalance but not Abnormal Basal Inflammatory Cytokine Profile in CF Bronchial Epithelial Cells. Front Physiol 2021; 12:619442. [PMID: 33613309 PMCID: PMC7891400 DOI: 10.3389/fphys.2021.619442] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/07/2021] [Indexed: 12/20/2022] Open
Abstract
A deficiency in cystic fibrosis transmembrane conductance regulator (CFTR) function in CF leads to chronic lung disease. CF is associated with abnormalities in fatty acids, ceramides, and cholesterol, their relationship with CF lung pathology is not completely understood. Therefore, we examined the impact of CFTR deficiency on lipid metabolism and pro-inflammatory signaling in airway epithelium using mass spectrometric, protein array. We observed a striking imbalance in fatty acid and ceramide metabolism, associated with chronic oxidative stress under basal conditions in CF mouse lung and well-differentiated bronchial epithelial cell cultures of CFTR knock out pig and CF patients. Cell-autonomous features of all three CF models included high ratios of ω-6- to ω-3-polyunsaturated fatty acids and of long- to very long-chain ceramide species (LCC/VLCC), reduced levels of total ceramides and ceramide precursors. In addition to the retinoic acid analog fenretinide, the anti-oxidants glutathione (GSH) and deferoxamine partially corrected the lipid profile indicating that oxidative stress may promote the lipid abnormalities. CFTR-targeted modulators reduced the lipid imbalance and oxidative stress, confirming the CFTR dependence of lipid ratios. However, despite functional correction of CF cells up to 60% of non-CF in Ussing chamber experiments, a 72-h triple compound treatment (elexacaftor/tezacaftor/ivacaftor surrogate) did not completely normalize lipid imbalance or oxidative stress. Protein array analysis revealed differential expression and shedding of cytokines and growth factors from CF epithelial cells compared to non-CF cells, consistent with sterile inflammation and tissue remodeling under basal conditions, including enhanced secretion of the neutrophil activator CXCL5, and the T-cell activator CCL17. However, treatment with antioxidants or CFTR modulators that mimic the approved combination therapies, ivacaftor/lumacaftor and ivacaftor/tezacaftor/elexacaftor, did not effectively suppress the inflammatory phenotype. We propose that CFTR deficiency causes oxidative stress in CF airway epithelium, affecting multiple bioactive lipid metabolic pathways, which likely play a role in CF lung disease progression. A combination of anti-oxidant, anti-inflammatory and CFTR targeted therapeutics may be required for full correction of the CF phenotype.
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Affiliation(s)
- Mieke Veltman
- Cell Biology Department, Erasmus Medical Center, Rotterdam, Netherlands.,Pediatric Pulmonology, Sophia Children's Hospital, Erasmus Medical Center, Rotterdam, Netherlands
| | - Juan B De Sanctis
- Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacký University, Olomouc, Czechia
| | - Marta Stolarczyk
- Cell Biology Department, Erasmus Medical Center, Rotterdam, Netherlands
| | - Nikolai Klymiuk
- Large Animal Models for Cardiovascular Research, TU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Andrea Bähr
- Large Animal Models for Cardiovascular Research, TU Munich, Munich, Germany.,Center for Innovative Medical Models, LMU Munich, Munich, Germany
| | - Rutger W Brouwer
- Cell Biology Department, Erasmus Medical Center, Rotterdam, Netherlands.,Center for Biomics, Erasmus Medical Center, Rotterdam, Netherlands
| | - Edwin Oole
- Cell Biology Department, Erasmus Medical Center, Rotterdam, Netherlands.,Center for Biomics, Erasmus Medical Center, Rotterdam, Netherlands
| | - Juhi Shah
- Department of Medicine, The Research Institute of the McGill University Health Centre, McGill University, Montreal, QC, Canada
| | - Tomas Ozdian
- Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacký University, Olomouc, Czechia
| | - Jie Liao
- Department of Physiology, CF Translational Research Centre, McGill University, Montreal, QC, Canada
| | - Carolina Martini
- Department of Physiology, CF Translational Research Centre, McGill University, Montreal, QC, Canada
| | - Danuta Radzioch
- Department of Medicine, The Research Institute of the McGill University Health Centre, McGill University, Montreal, QC, Canada
| | - John W Hanrahan
- Department of Medicine, The Research Institute of the McGill University Health Centre, McGill University, Montreal, QC, Canada.,Department of Physiology, CF Translational Research Centre, McGill University, Montreal, QC, Canada
| | - Bob J Scholte
- Cell Biology Department, Erasmus Medical Center, Rotterdam, Netherlands.,Pediatric Pulmonology, Sophia Children's Hospital, Erasmus Medical Center, Rotterdam, Netherlands
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Dumut DC, De Sanctis JB, Mistrik M, Skrott Z, Dzubak P, Bartek J, Hajduch M, Radzioch D. Abstract 5246: Disulfiram anticancer metabolite, dithiocarb-copper complex, demonstrates anti-neoplastic activity against hypermutated colorectal cancers. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-5246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Colorectal cancer (CRC) is the third leading cause of cancer related deaths in the United States. It was responsible for about 51,000 deaths during 2019. Surgical resection and systemic chemotherapy are standard approaches to treat both localized and metastatic CRC (mCRC). However, the effect of the chemotherapy depends on the characteristics of the individual tumor, for instance CRC subtypes with a microsatellite instability (MSI) tend to have better prognosis and response to both chemotherapy and immune check-point inhibition. Recently, Disulfiram's anti-cancer activity was explored and its metabolite ditiocarb-copper complex (CuET) was found to have high anti-cancer activity. The mechanism of action of CuET was proposed to act through p97 segregase adaptor NPL4 and activation of endoplasmic reticulum stress leading to preferential apoptosis of cancer cells. Since altered protein degradation pathway is targeted by CuET, this compound might display high efficacy in highly mutated colorectal cancers.
Methods: To assess CuET anti-cancer activity in vitro, we performed survival curve assays and colony-formation assays in both murine hypermutated colorectal cancer cell line MC-38 as well as in human KRAS mutant and MSI HCT116 cell line. We also evaluated anti-metastatic effect of CuET on both cell lines through migration-invasion assays in Boyden chamber setting. We assessed in vivo efficacy of systemic treatment with CuET alone or in combination with irinotecan, against MC-38 model in immunocompetent C57BL/6 mice. We characterized tumor growth, mice survival and tumor histopathology.
Results: Our results demonstrate that CuET displays cytotoxicity in MC-38 and HCT116 cells at very low doses with respective IC50 of 46nM and 88nM. CuET also significantly reduces the ability of both cell lines to grow and form colonies under sustained treatment. Additionally, CuET is effective in significantly reducing cancer cell migration and invasion through porous membrane in vitro. Furthermore, systemic treatment with CuET significantly reduced tumor growth in mice and prolonged survival when compared to controls.
Conclusion: CuET demonstrates cytotoxic activity against hypermutated colorectal cancer cells both in vitro and in vivo and should be further investigated in clinical trials.
Citation Format: Daciana Catalina Dumut, Juan B. De Sanctis, Martin Mistrik, Zdenek Skrott, Petr Dzubak, Jiri Bartek, Marian Hajduch, Danuta Radzioch. Disulfiram anticancer metabolite, dithiocarb-copper complex, demonstrates anti-neoplastic activity against hypermutated colorectal cancers [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 5246.
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Affiliation(s)
| | - Juan B. De Sanctis
- 2Institute of Molecular & Translational Medicine, Palacky University, Olomuc, Czech Republic
| | - Martin Mistrik
- 2Institute of Molecular & Translational Medicine, Palacky University, Olomuc, Czech Republic
| | - Zdenek Skrott
- 2Institute of Molecular & Translational Medicine, Palacky University, Olomuc, Czech Republic
| | - Petr Dzubak
- 2Institute of Molecular & Translational Medicine, Palacky University, Olomuc, Czech Republic
| | - Jiri Bartek
- 3Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Marian Hajduch
- 2Institute of Molecular & Translational Medicine, Palacky University, Olomuc, Czech Republic
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Martínez G, Mijares MR, De Sanctis JB. Effects of Flavonoids and Its Derivatives on Immune Cell Responses. ACTA ACUST UNITED AC 2020; 13:84-104. [PMID: 31814545 DOI: 10.2174/1872213x13666190426164124] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 03/29/2019] [Accepted: 04/01/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Various pieces of evidence have shown that people who consume foods rich in polyphenolic and flavonoids compounds have a lower incidence of inflammatory, autoimmune diseases and cancer. OBJECTIVE The study aimed to review the most potent compounds that affect the immune response and diseases associated with it. METHODS Publications in PubMed and EmBase, from 1974-2018, and patents form Free patents online, Scifinder, Espacenet and Mendeley in which flavonoids, their semi-synthetic and synthetic derivatives are involved in immunosuppressive or immunostimulatory responses in vitro and in vivo. RESULTS In vitro, flavonoids and their derivatives inhibit various transcriptional factors, which modulate differentiation, proliferation, activation of immune cells and enhance regulatory T cell generation. Some flavonoids exert anti-inflammatory effects through: Blockade of NF-κB, and NLRP3 inflammasome, inhibition of pro-inflammatory cytokine production, IL-1β, IL-2, IL-6, TNF-α, IL-17A, down regulation of chemokines, and reduction of reactive oxygen and nitrogen species. Nevertheless, several reports have shown that some flavonoids enhance immune response by enhancing: oxygen and nitrogen radicals, antibody production, cytotoxic activity against tumours by increasing activating receptors and down regulating inhibitory receptors. In consequence, flavonoids may be potentially useful for treatment of infectious diseases and cancer. CONCLUSION The most potent flavonoids in inflammation that modify immune responses are apigenin, quercetin and Epigallocatechin-3-Gallate (EGCG) although, other compounds are still under study and cannot be excluded. The most relevant patents concerning the use of flavones and other polyphenols were revised. A promising future of these compounds in different therapies is discussed.
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Affiliation(s)
- Gricelis Martínez
- Unidad de Bioquimica, Facultad de Farmacia, Universidad Central de Venezuela, Apartado 47206, Los Chaguaramos, Caracas 1041-A, Venezuela
| | - Michael R Mijares
- Unidad de Biotecnologia, Facultad de Farmacia, and Instituto de Inmunologia Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela
| | - Juan B De Sanctis
- Instituto de Inmunologia, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela.,Institute of Molecular and Translational Medicine, Palacky University Olomouc, Czech Republic
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Youssef M, De Sanctis JB, Shah J, Dumut DC, Hajduch M, Naumova AK, Radzioch D. Treatment of Allergic Asthma with Fenretinide Formulation (LAU-7b) Downregulates ORMDL Sphingolipid Biosynthesis Regulator 3 ( Ormdl3) Expression and Normalizes Ceramide Imbalance. J Pharmacol Exp Ther 2020; 373:476-487. [PMID: 32273303 DOI: 10.1124/jpet.119.263715] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 02/05/2020] [Indexed: 02/06/2023] Open
Abstract
Zona pellucida binding protein 2 (Zpbp2) and ORMDL sphingolipid biosynthesis regulator 3 (Ormdl3), mapped downstream of Zpbp2, were identified as two genes associated with airway hyper-responsiveness (AHR). Ormdl3 gene product has been shown to regulate the biosynthesis of ceramides. Allergic asthma was shown to be associated with an imbalance between very-long-chain ceramides (VLCCs) and long-chain ceramides (LCCs). We hypothesized that Fenretinide can prevent the allergic asthma-induced augmentation of Ormdl3 gene expression, normalize aberrant levels of VLCCs and LCCs, and treat allergic asthma symptoms. We induced allergic asthma by house dust mite (HDM) in A/J WT mice and Zpbp2 KO mice expressing lower levels of Ormdl3 mRNA than WT. We investigated the effect of a novel formulation of Fenretinide, LAU-7b, on the AHR, inflammatory cell infiltration, mucus production, IgE levels, and ceramide levels. Although lower Ormdl3 expression, which was observed in Zpbp2 KO mice, was associated with lower AHR, allergic Zpbp2 KO mice were not protected from inflammatory cell infiltration, mucus accumulation, or aberrant levels of VLCCs and LCCs induced by HDM. LAU-7b treatment protects both the Zpbp2 KO and WT mice. The treatment significantly lowers the gene expression of Ormdl3, normalizes the VLCCs and LCCs, and corrects all the other phenotypes associated with allergic asthma after HDM challenge, except the elevated levels of IgE. LAU-7b treatment prevents the augmentation of Ormdl3 expression and ceramide imbalance induced by HDM challenge and protects both WT and Zpbp2 KO mice against allergic asthma symptoms. SIGNIFICANCE STATEMENT: Compared with A/J WT mice, KO mice with Zpbp2 gene deletion have lower AHR and lower levels of Ormdl3 expression. The novel oral clinical formulation of Fenretinide (LAU-7b) effectively lowers the AHR and protects against inflammatory cell infiltration and mucus accumulation induced by house dust mite in both Zpbp2 KO and WT A/J mice. LAU-7b prevents Ormdl3 overexpression in WT allergic mice and corrects the aberrant levels of very-long-chain and long-chain ceramides in both WT and Zpbp2 KO allergic mice.
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Affiliation(s)
- Mina Youssef
- Department of Human Genetics (M.Y., A.K.N., D.R.), Department of Pharmacology and Therapeutics (J.S.), Division of Experimental Medicine, Department of Medicine (D.C.D., D.R.), and Department of Obstetrics and Gynecology (A.K.N.), McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada (M.Y., J.S., D.C.D., D.R.); and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic (J.B.D.S., M.H., D.R.)
| | - Juan B De Sanctis
- Department of Human Genetics (M.Y., A.K.N., D.R.), Department of Pharmacology and Therapeutics (J.S.), Division of Experimental Medicine, Department of Medicine (D.C.D., D.R.), and Department of Obstetrics and Gynecology (A.K.N.), McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada (M.Y., J.S., D.C.D., D.R.); and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic (J.B.D.S., M.H., D.R.)
| | - Juhi Shah
- Department of Human Genetics (M.Y., A.K.N., D.R.), Department of Pharmacology and Therapeutics (J.S.), Division of Experimental Medicine, Department of Medicine (D.C.D., D.R.), and Department of Obstetrics and Gynecology (A.K.N.), McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada (M.Y., J.S., D.C.D., D.R.); and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic (J.B.D.S., M.H., D.R.)
| | - Daciana Catalina Dumut
- Department of Human Genetics (M.Y., A.K.N., D.R.), Department of Pharmacology and Therapeutics (J.S.), Division of Experimental Medicine, Department of Medicine (D.C.D., D.R.), and Department of Obstetrics and Gynecology (A.K.N.), McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada (M.Y., J.S., D.C.D., D.R.); and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic (J.B.D.S., M.H., D.R.)
| | - Marian Hajduch
- Department of Human Genetics (M.Y., A.K.N., D.R.), Department of Pharmacology and Therapeutics (J.S.), Division of Experimental Medicine, Department of Medicine (D.C.D., D.R.), and Department of Obstetrics and Gynecology (A.K.N.), McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada (M.Y., J.S., D.C.D., D.R.); and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic (J.B.D.S., M.H., D.R.)
| | - Anna K Naumova
- Department of Human Genetics (M.Y., A.K.N., D.R.), Department of Pharmacology and Therapeutics (J.S.), Division of Experimental Medicine, Department of Medicine (D.C.D., D.R.), and Department of Obstetrics and Gynecology (A.K.N.), McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada (M.Y., J.S., D.C.D., D.R.); and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic (J.B.D.S., M.H., D.R.)
| | - Danuta Radzioch
- Department of Human Genetics (M.Y., A.K.N., D.R.), Department of Pharmacology and Therapeutics (J.S.), Division of Experimental Medicine, Department of Medicine (D.C.D., D.R.), and Department of Obstetrics and Gynecology (A.K.N.), McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada (M.Y., J.S., D.C.D., D.R.); and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic (J.B.D.S., M.H., D.R.)
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9
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Rámirez H, Rodrigues JR, Mijares MR, De Sanctis JB, Charris JE. Synthesis and biological activity of 2-[2-(7-chloroquinolin-4-ylthio)-4-methylthiazol-5-yl]-N-phenylacetamide derivatives as antimalarial and cytotoxic agents. Journal of Chemical Research 2020. [DOI: 10.1177/1747519819899073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel series of 2-[2-(7-chloroquinolin-4-ylthio)-4-methylthiazol-5-yl]- N-phenylacetamide derivatives is synthesized via substitution with 2-mercapto-4-methyl-5-thiazoleacetic acid at position 4 of 4,7-dichloroquinoline to obtain an intermediate acetic acid derivative. The chemical behavior of these reactants was investigated using different reaction conditions to optimize the nucleophilic substitution at position 4. The final compounds are prepared using a modified version of the Steglich esterification reaction between the acetic acid intermediate 3 and different anilines. The structures are confirmed by infrared, 1H, 13C, distortionless enhancement by polarization transfer 135°, Correlated Spectroscopy, heteronuclear correlation spectroscopy and (Long range HETCOR using three BIRD pulses) FLOCK-NMR spectral studies, and by elemental analysis. The synthesized compounds are tested in vitro and in vivo for their potential antimalarial and anticancer activities, with derivative 11 being the most promising candidate.
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Affiliation(s)
- Hegira Rámirez
- Organic Synthesis Laboratory, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela
- Faculty of Medicine, Universidad de las Américas, Quito, Ecuador
| | - Juan R Rodrigues
- Laboratory of Pharmacology and Toxicology, Department of Cell Biology, Simón Bolívar University, Caracas, Venezuela
| | - Michael R Mijares
- Biotechnology Unit, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela
- Institute of Immunology, Faculty of Medicine, Central University of Venezuela, Caracas, Venezuela
| | - Juan B De Sanctis
- Institute of Immunology, Faculty of Medicine, Central University of Venezuela, Caracas, Venezuela
- Institute of Molecular and Translational Medicine, Faculty of Medicine, Palacky University Olomouc, Olomouc, Czech Republic
| | - Jaime E Charris
- Organic Synthesis Laboratory, Faculty of Pharmacy, Central University of Venezuela, Caracas, Venezuela
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10
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Garić D, De Sanctis JB, Dumut DC, Shah J, Peña MJ, Youssef M, Petrof BJ, Kopriva F, Hanrahan JW, Hajduch M, Radzioch D. Fenretinide favorably affects mucins (MUC5AC/MUC5B) and fatty acid imbalance in a manner mimicking CFTR-induced correction. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1865:158538. [PMID: 31678518 DOI: 10.1016/j.bbalip.2019.158538] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 09/28/2019] [Accepted: 10/03/2019] [Indexed: 02/07/2023]
Abstract
Cystic fibrosis (CF) is the most common genetic disease in Caucasians. CF is manifested by abnormal accumulation of mucus in the lungs, which serves as fertile ground for the growth of microorganisms leading to recurrent infections and ultimately, lung failure. Mucus in CF patients consists of DNA from dead neutrophils as well as mucins produced by goblet cells. MUC5AC mucin leads to pathological plugging of the airways whereas MUC5B has a protective role against bacterial infection. Therefore, decreasing the level of MUC5AC while maintaining MUC5B intact would in principle be a desirable mucoregulatory treatment outcome. Fenretinide prevented the lipopolysaccharide-induced increase of MUC5AC gene expression, without affecting the level of MUC5B, in a lung goblet cell line. Additionally, fenretinide treatment reversed the pro-inflammatory imbalance of fatty acids by increasing docosahexaenoic acid and decreasing the levels of arachidonic acid in a lung epithelial cell line and primary leukocytes derived from CF patients. Furthermore, for the first time we also demonstrate the effect of fenretinide on multiple unsaturated fatty acids, as well as differential effects on the levels of long- compared to very-long-chain saturated fatty acids which are important substrates of complex phospholipids. Finally, we demonstrate that pre-treating mice with fenretinide in a chronic model of P. aeruginosa lung infection efficiently decreases the accumulation of mucus. These findings suggest that fenretinide may offer a new approach to therapeutic modulation of pathological mucus production in CF.
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Affiliation(s)
- Dušan Garić
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada
| | - Juan B De Sanctis
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic; Institute of Immunology, Faculty of Medicine, Universidad Central de Venezuela, Bolivarian Republic of Venezuela
| | - Daciana Catalina Dumut
- Department of Medicine, Division of Experimental Medicine, McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada
| | - Juhi Shah
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada
| | - Maria Johanna Peña
- Institute of Immunology, Faculty of Medicine, Universidad Central de Venezuela, Bolivarian Republic of Venezuela
| | - Mina Youssef
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada
| | - Basil J Petrof
- Meakins-Christie Laboratories, Translational Research in Respiratory Diseases Program, Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada
| | - Francisek Kopriva
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - John W Hanrahan
- Department of Biochemistry, McGill University, Montreal, Quebec, Canada
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Danuta Radzioch
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic; Department of Medicine, Division of Experimental Medicine, McGill University, Montreal, Quebec, Canada; Program in Infectious Diseases and Immunity in Global Health, McGill University Health Center, Montreal, Quebec, Canada.
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11
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Garić D, De Sanctis JB, Shah J, Dumut DC, Radzioch D. Biochemistry of very-long-chain and long-chain ceramides in cystic fibrosis and other diseases: The importance of side chain. Prog Lipid Res 2019:100998. [PMID: 31445070 DOI: 10.1016/j.plipres.2019.100998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/01/2019] [Accepted: 03/10/2019] [Indexed: 12/18/2022]
Abstract
Ceramides, the principal building blocks of all sphingolipids, have attracted the attention of many scientists around the world interested in developing treatments for cystic fibrosis, the most common genetic disease of Caucasians. Many years of fruitful research in this field have produced some fundamentally important, yet controversial results. Here, we aimed to summarize the current knowledge on the role of long- and very-long- chain ceramides, the most abundant species of ceramides in animal cells, in cystic fibrosis and other diseases. We also aim to explain the importance of the length of their side chain in the context of stability of transmembrane proteins through a concise synthesis of their biophysical chemistry, cell biology, and physiology. This review also addresses several remaining riddles in this field. Finally, we discuss the technical challenges associated with the analysis and quantification of ceramides. We provide the evaluation of the antibodies used for ceramide quantification and we demonstrate their lack of specificity. Results and discussion presented here will be of interest to anyone studying these enigmatic lipids.
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Affiliation(s)
- Dušan Garić
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Juan B De Sanctis
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Juhi Shah
- Department of Pharmacology and Experimental Therapeutics, McGill University, Montreal, QC, Canada
| | - Daciana Catalina Dumut
- Department of Medicine, Division of Experimental Medicine, McGill University, Montreal, QC, Canada
| | - Danuta Radzioch
- Department of Human Genetics, McGill University, Montreal, QC, Canada; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic; Department of Medicine, Division of Experimental Medicine, McGill University, Montreal, QC, Canada.
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12
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Garić D, De Sanctis JB, Shah J, Dumut DC, Radzioch D. Biochemistry of very-long-chain and long-chain ceramides in cystic fibrosis and other diseases: The importance of side chain. Prog Lipid Res 2019; 74:130-144. [PMID: 30876862 DOI: 10.1016/j.plipres.2019.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/01/2019] [Accepted: 03/10/2019] [Indexed: 12/19/2022]
Abstract
Ceramides, the principal building blocks of all sphingolipids, have attracted the attention of many scientists around the world interested in developing treatments for cystic fibrosis, the most common genetic disease of Caucasians. Many years of fruitful research in this field have produced some fundamentally important, yet controversial results. Here, we aimed to summarize the current knowledge on the role of long- and very-long- chain ceramides, the most abundant species of ceramides in animal cells, in cystic fibrosis and other diseases. We also aim to explain the importance of the length of their side chain in the context of stability of transmembrane proteins through a concise synthesis of their biophysical chemistry, cell biology, and physiology. This review also addresses several remaining riddles in this field. Finally, we discuss the technical challenges associated with the analysis and quantification of ceramides. We provide the evaluation of the antibodies used for ceramide quantification and we demonstrate their lack of specificity. Results and discussion presented here will be of interest to anyone studying these enigmatic lipids.
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Affiliation(s)
- Dušan Garić
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Juan B De Sanctis
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Juhi Shah
- Department of Pharmacology and Experimental Therapeutics, McGill University, Montreal, QC, Canada
| | - Daciana Catalina Dumut
- Department of Medicine, Division of Experimental Medicine, McGill University, Montreal, QC, Canada
| | - Danuta Radzioch
- Department of Human Genetics, McGill University, Montreal, QC, Canada; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic; Department of Medicine, Division of Experimental Medicine, McGill University, Montreal, QC, Canada.
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13
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Subiela JV, Torres SH, De Sanctis JB, Hernández N. Cardiorespiratory responses, nitric oxide production and inflammatory factors in patients with myocardial infarction after rehabilitation. Nitric Oxide 2018. [DOI: 10.1016/j.niox.2018.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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De Sanctis JB. Editorial (Thematic Issue: Immune Modulation). Curr Pharm Des 2018; 22:6207-6208. [PMID: 28164763 DOI: 10.2174/1381612822999160928125458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Juan B De Sanctis
- Institute of Immunology National Center of Reference in Clinical Immunology FOCIS Center of Excelence Faculty of Medicine Universidad Central de Venezuela Caracas, Venezuela
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15
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Garić D, De Sanctis JB, Wojewodka G, Houle D, Cupri S, Abu-Arish A, Hanrahan JW, Hajduch M, Matouk E, Radzioch D. Fenretinide differentially modulates the levels of long- and very long-chain ceramides by downregulating Cers5 enzyme: evidence from bench to bedside. J Mol Med (Berl) 2017; 95:1053-1064. [DOI: 10.1007/s00109-017-1564-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 05/01/2017] [Accepted: 06/15/2017] [Indexed: 10/19/2022]
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16
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Veltman M, Stolarczyk M, Radzioch D, Wojewodka G, De Sanctis JB, Dik WA, Dzyubachyk O, Oravecz T, de Kleer I, Scholte BJ. Correction of lung inflammation in a F508del CFTR murine cystic fibrosis model by the sphingosine-1-phosphate lyase inhibitor LX2931. Am J Physiol Lung Cell Mol Physiol 2016; 311:L1000-L1014. [PMID: 27663991 DOI: 10.1152/ajplung.00298.2016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 09/19/2016] [Indexed: 01/08/2023] Open
Abstract
Progressive lung disease with early onset is the main cause of mortality and morbidity in cystic fibrosis patients. Here we report a reduction of sphingosine-1-phosphate (S1P) in the lung of unchallenged Cftrtm1EUR F508del CFTR mutant mice. This correlates with enhanced infiltration by inducible nitric oxide synthase (iNOS)-expressing granulocytes, B cells, and T cells. Furthermore, the ratio of macrophage-derived dendritic cells (MoDC) to conventional dendritic cells (cDC) is higher in mutant mouse lung, consistent with unprovoked inflammation. Oral application of a S1P lyase inhibitor (LX2931) increases S1P levels in mutant mouse tissues. This normalizes the lung MoDC/cDC ratio and reduces B and T cell counts. Lung granulocytes are enhanced, but iNOS expression is reduced in this population. Although lung LyC6+ monocytes are enhanced by LX2931, they apparently do not differentiate to MoDC and macrophages. After challenge with bacterial toxins (LPS-fMLP) we observe enhanced levels of proinflammatory cytokines TNF-α, KC, IFNγ, and IL-12 and the inducible mucin MUC5AC in mutant mouse lung, evidence of deficient resolution of inflammation. LX2931 does not prevent transient inflammation or goblet cell hyperplasia after challenge, but it reduces MUC5AC and proinflammatory cytokine levels toward normal values. We conclude that lung pathology in homozygous mice expressing murine F508del CFTR, which represents the most frequent mutation in CF patients, is characterized by abnormal behavior of infiltrating myeloid cells and delayed resolution of induced inflammation. This phenotype can be partially corrected by a S1P lyase inhibitor, providing a rationale for therapeutic targeting of the S1P signaling pathway in CF patients.
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Affiliation(s)
- Mieke Veltman
- Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Danuta Radzioch
- Departments of Medicine and Human Genetics, McGill University, Montreal, Canada
| | - Gabriella Wojewodka
- Departments of Medicine and Human Genetics, McGill University, Montreal, Canada
| | - Juan B De Sanctis
- Faculty of Medicine. Universidad Central de Venezuela, Institute of Immunology, Caracas, Venezuela
| | - Willem A Dik
- Immunology, Erasmus MC, Rotterdam, The Netherlands
| | - Oleh Dzyubachyk
- Department of Radiology, Division of Image Processing, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Ismé de Kleer
- Department of Pediatrics, Division of Respiratory Medicine, Erasmus MC, Rotterdam, The Netherlands; and.,Laboratory of Pulmonary Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Bob J Scholte
- Cell Biology, Erasmus MC, Rotterdam, The Netherlands;
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17
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Benaim G, Pimentel AA, Felibertt P, Mayora A, Colman L, Sojo F, Rojas H, De Sanctis JB. Sphingosine inhibits the sarco(endo)plasmic reticulum Ca(2+)-ATPase (SERCA) activity. Biochem Biophys Res Commun 2016; 473:572-7. [PMID: 27033604 DOI: 10.1016/j.bbrc.2016.03.123] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Accepted: 03/26/2016] [Indexed: 10/22/2022]
Abstract
The increase in the intracellular Ca(2+) concentration ([Ca(2+)]i) is the key variable for many different processes, ranging from regulation of cell proliferation to apoptosis. In this work we demonstrated that the sphingolipid sphingosine (Sph) increases the [Ca(2+)]i by inhibiting the sarco(endo)plasmic reticulum Ca(2+)-ATPase (SERCA), in a similar manner to thapsigargin (Tg), a specific inhibitor of this Ca(2+) pump. The results showed that addition of sphingosine produced a release of Ca(2+) from the endoplasmic reticulum followed by a Ca(2+) entrance from the outside mileu. The results presented in this work support that this sphingolipid could control the activity of the SERCA, and hence sphingosine may participate in the regulation of [Ca(2+)]I in mammalian cells.
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Affiliation(s)
- Gustavo Benaim
- Instituto de Estudios Avanzados (IDEA), Caracas, Venezuela; Instituto de Biología Experimental, Facultad de Ciencias, Universidad Central de Venezuela (UCV), Caracas, Venezuela.
| | - Adriana A Pimentel
- Facultad de Farmacia, Universidad Central de Venezuela (UCV), Caracas, Venezuela.
| | - Pimali Felibertt
- Facultad de Ciencias, Universidad de Carabobo, Valencia, Venezuela
| | - Adriana Mayora
- Instituto de Biología Experimental, Facultad de Ciencias, Universidad Central de Venezuela (UCV), Caracas, Venezuela
| | - Laura Colman
- Instituto Pasteur de Montevideo, Montevideo, Uruguay
| | - Felipe Sojo
- Instituto de Biología Experimental, Facultad de Ciencias, Universidad Central de Venezuela (UCV), Caracas, Venezuela
| | - Héctor Rojas
- Instituto de Inmunología, Universidad Central de Venezuela (UCV), Caracas, Venezuela; Centro de Biofísica y Bioquímica, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Juan B De Sanctis
- Instituto de Inmunología, Universidad Central de Venezuela (UCV), Caracas, Venezuela
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18
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Cerezo D, Peña MJ, Mijares M, Martínez G, Blanca I, De Sanctis JB. Peptide vaccines for cancer therapy. ACTA ACUST UNITED AC 2016; 9:38-45. [PMID: 25642777 DOI: 10.2174/1872213x09666150131141953] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 01/24/2015] [Accepted: 01/21/2015] [Indexed: 02/05/2023]
Abstract
For around four decades, vaccines of different kinds have been developed to treat different types of cancer. However, promising results encountered in the early phase contrasted with the results recorded in clinical studies. Recent discoveries in the vaccine field, adjuvants and delivery systems, and antigen presentation have lead to new patented approaches. The current review is focused on general description of peptide vaccines involving cancer antigen presentation, specific immune response, cell death dependent pathways, and target therapy for modified or mutated oncogenes. A rapid evolving research in the area may evolve in fruitful outcomes in the near future.
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Affiliation(s)
| | | | | | | | | | - Juan B De Sanctis
- Inmunologia, Facultad de Medicina, Universidad Central de Venezuela, Apartado 50109, Caracas 1050-A, Venezuela.
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19
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Garcia A, Fernandez S, Toro F, De Sanctis JB. An overview of hepatitis C vaccines. ACTA ACUST UNITED AC 2015; 8:85-91. [PMID: 25000932 DOI: 10.2174/1872213x08666140704115149] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 06/27/2014] [Accepted: 07/03/2014] [Indexed: 11/22/2022]
Abstract
The hepatitis C virus (HCV) is a prevalent human pathogen that causes persistent liver infections in most infected individuals; thus, efforts to develop a safe vaccine, preventive and therapeutic, are urgently needed. Current approaches for the vaccine include the use of recombinant E1 and E2 proteins, synthetic peptides, viral particles, viral vectors, DNA vaccines, dendritic cells, and prime-boost strategies. However, several problems have been encountered: restricted humoral and cell mediated responses, the low delivery of potentially protective viral epitopes, and the low effectiveness of the adjuvants used in the different protocols. Strong neutralizing antibodies and powerful cellular immune responses are required for an effective vaccine against HCV. New patents are being developed to enhance both immune responses. The high prevalence of global HCV infection obliges the development of new efforts in primary prevention; therefore, a safe and efficient vaccine to confer protection against HCV is urgently needed.
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Affiliation(s)
| | | | | | - Juan B De Sanctis
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Apartado 50109, Caracas 1050-A, Venezuela.
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De Sanctis JB, Garmendia JV. Vaccine therapy update for pregnant, immunocompromised, and chronic diseases patients. ACTA ACUST UNITED AC 2015; 9:46-53. [PMID: 25809521 DOI: 10.2174/1872213x09666150318114217] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 03/05/2015] [Accepted: 03/05/2015] [Indexed: 11/22/2022]
Abstract
The use of vaccines in pregnant, immunocompromised or chronic diseases patients has been widely discussed in the literature recently. Vaccines continue to be a safe and effective method to induce or recall immune response to several infective agents or even induce an effective response in chronically infected patients. The general presumption of adverse events, lack of response and unwanted tolerance seem to be responsible for the decreased vaccination rate in these patients. In the present review, the use of rational vaccination schemes, new patents of use, along as new approaches and patents have been discussed with the scope to diminish the high morbidity and mortality often encountered in these patients.
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Affiliation(s)
- Juan B De Sanctis
- Instituto de Inmunologia, Facultad de Medicina, Universidad Central de Venezuela, Apartado 50109, Caracas 1050-A, Venezuela.
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21
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Moreno D, Garcia A, Lema D, De Sanctis JB. Surfactant protein D in chornic obstructive pulmonary disease (COPD). ACTA ACUST UNITED AC 2015; 8:42-7. [PMID: 24506680 DOI: 10.2174/1872214808666140209142640] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 02/06/2014] [Accepted: 02/07/2014] [Indexed: 11/22/2022]
Abstract
In the recent years, a large number of potential biomarkers for Chronic Obstructive Pulmonary Disease (COPD) have been described. One of the important biomarkers is Surfactant Protein D (SPD) since serum SPD levels have been associated with lung function or health status in patients with severe COPD. Several interesting evidences of the protein and gene polymorphisms have been described. The present review highlights the current literature, recent patents and, future prospects of this important collection.
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Affiliation(s)
| | | | | | - Juan B De Sanctis
- Catedra de Patologia General y Fisiopatologia, Facultad de Medicina, Universidad Central de Venezuela, Caracas 1050-A, Venezuela.
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Garmendia JV, Moreno D, Garcia AH, De Sanctis JB. Metabolic syndrome and asthma. ACTA ACUST UNITED AC 2015; 8:60-6. [PMID: 24397782 DOI: 10.2174/1872214807666140107151023] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 01/03/2014] [Accepted: 01/03/2014] [Indexed: 01/07/2023]
Abstract
Metabolic syndrome (MetS) is a syndrome that involves at least three disorders dyslipidemia, insulin resistance, obesity and/or hypertension. MetS has been associated with several chronic diseases in the adulthood; however, in the recent years, the syndrome was redefined in children. Girls with early menarche and asthma, and children with MetS and asthma that reach adulthood appear to have higher risk to develop severe or difficult to control asthma and a higher probability to suffer cardiovascular diseases. It has been proposed that patients with MetS and endocrinological disorders should be considered a different entity in which pharmacologic treatment should be adjusted according to the individual. Recent patents on the field have addressed new issues on how endocrine control should be managed along with asthma therapeutics. In the near future, new approaches should decrease the high morbidity and mortality associated to these types of patients.
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Affiliation(s)
| | | | | | - Juan B De Sanctis
- Instituto de Inmunologia, Facultad de Medicina, Universidad Central de Venezuela, Apartado 50109, Caracas 1050-A, Venezuela.
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De Sanctis JB. Vaccines. Recent Pat Inflamm Allergy Drug Discov 2015; 9:2-3. [PMID: 25944244 DOI: 10.2174/1872213x09666150220100549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Affiliation(s)
- Juan B De Sanctis
- Instituto de Inmunologia, Facultad de Medicina, Universidad Central de Venezuela, Apartado 50109, Caracas 1050-A, Venezuela.
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24
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Lachance C, Wojewodka G, Skinner TAA, Guilbault C, De Sanctis JB, Radzioch D. Fenretinide corrects the imbalance between omega-6 to omega-3 polyunsaturated fatty acids and inhibits macrophage inflammatory mediators via the ERK pathway. PLoS One 2013; 8:e74875. [PMID: 24069363 PMCID: PMC3771966 DOI: 10.1371/journal.pone.0074875] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 08/09/2013] [Indexed: 12/24/2022] Open
Abstract
We previously identified Fragile X-related protein 1 (FXR1) as an RNA-binding protein involved in the post-transcriptional control of TNF and other cytokines in macrophages. Macrophages derived from FXR1-KO mice overexpress several inflammatory cytokines including TNF. Recently, we showed that fenretinide (4HPR) is able to inhibit several inflammatory cytokines in the lungs of cystic fibrosis mice, which also have abnormal immune responses. Therefore, we hypothesized that 4HPR might also be able to downregulate excessive inflammation even in macrophages with ablated FXR1. Indeed, our results demonstrate that 4HPR inhibited the excessive production of inflammatory mediators, including TNF, IL-6, CCL2 and CCL-5 in LPS-stimulated FXR1-KO macrophages, by selectively inhibiting phosphorylation of ERK1/2, which is naturally more phosphorylated in FXR1-KO cells. We also found that LPS stimulation of FXR1-KO macrophages led to significantly higher ratio of arachidonic acid/docosahexaenoic acid than observed in FXR1-WT macrophages. Interestingly, treatment with 4HPR was associated with the normalization of arachidonic acid/docosahexaenoic acid ratio in macrophages, which we found to impact phosphorylation of ERK1/2. Overall, this study shows for the first time that 4HPR modulates inflammatory cytokine expression in macrophages by correcting a phospholipid-bound fatty acid imbalance that impacts the phosphorylation of ERK1/2.
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Affiliation(s)
- Claude Lachance
- McGill University, Department of Medicine and Department of Human Genetics, McGill University Health Center Research Institute, Montreal, Quebec, Canada
| | - Gabriella Wojewodka
- McGill University, Department of Medicine and Department of Human Genetics, McGill University Health Center Research Institute, Montreal, Quebec, Canada
| | - Tom A. A. Skinner
- McGill University, Department of Medicine and Department of Human Genetics, McGill University Health Center Research Institute, Montreal, Quebec, Canada
| | - Claudine Guilbault
- McGill University, Department of Medicine and Department of Human Genetics, McGill University Health Center Research Institute, Montreal, Quebec, Canada
| | - Juan B. De Sanctis
- Central University of Venezuela, Institute of Immunology, Caracas, Venezuela
| | - Danuta Radzioch
- McGill University, Department of Medicine and Department of Human Genetics, McGill University Health Center Research Institute, Montreal, Quebec, Canada
- * E-mail:
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25
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Peña MJ, De Sanctis JB. Recent patents in autophagy and immune response. ACTA ACUST UNITED AC 2013; 7:215-22. [PMID: 23947691 DOI: 10.2174/1872213x113079990020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 08/05/2013] [Accepted: 08/05/2013] [Indexed: 11/22/2022]
Abstract
Autophagy is a complex process in which cell homeostasis of proteins, organelles, exocytic and endocytic vacuoles is controlled. There is a direct link between autophagy and cell death with antigen processing, generation of inflammatory response and immune response. In different diseases, deficiencies in autophagy have been reported. In cancer, it has been proposed that autophagy, at its beginning, is capable of inducing cell death; however, in aggressive tumours and metastasis, the process is responsible for pharmacologic resistance and tumour survival. More research has to be done in order to allow us to understand the process and generate therapeutic options in different pathologies important for the human being. Some patents focused on methodology of autophagosome formation and analysis which seem to be important for pathological description and eventually in future therapeutic approaches have also been reviewed in this article.
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Affiliation(s)
- María J Peña
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Apartado 50109, Caracas 1050-A, Venezuela
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Abstract
Adjuvants may promote immune responses: by recruiting professional antigen-presenting cells (APCs) to the vaccination site, increasing the delivery of antigens to APCs, or by activating APCs to produce cytokines and by triggering T cell responses. Aluminium salts have been effective at promoting protective humoral immunity; however, they are not effective in generating cell-mediated immunity. A number of different approaches have been developed to potentiate immune response and they have been partially successful. Research has been conducted into vaccine delivery systems (VDS); enhancing cross-presentation by targeting antigens to (APCs). Antigen discovery has increased over the past decade, and consequently, it has accelerated vaccine development demanding a new generation of VDS that combines different types of adjuvants into specific formulations with greater activity. The new approaches offer a wide spectrum of opportunities in vaccine research with direct applications in the near future.
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Affiliation(s)
- Alexis García
- Instituto de Inmunologia, Facultad de Medicina, Universidad Central de Venezuela, Apartado, Venezuela
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Garmendia JV, De Sanctis JB. Perspectives of new therapies for endometriosis. ACTA ACUST UNITED AC 2013; 6:218-23. [PMID: 22694252 DOI: 10.2174/187221412802481702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 05/29/2012] [Accepted: 05/29/2012] [Indexed: 11/22/2022]
Abstract
Endometriosis is an inflammatory disease characterized by the presence of endometrial glandular epithelial and stromal cells growing in the extra-uterine environment. The disease affects: ovarian function, oocyte quality, embryo development and implantation, and uterine function resulting in infertility or spontaneous pregnancy loss. Even though the world's prevalence is above 10 %, an effective treatment has not yet been found. New pharmacological approaches have been designed and patented that could serve as future therapies for this disease.
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Affiliation(s)
- Jenny V Garmendia
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Apartado 50109, Caracas 1050-A, Venezuela.
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Larocca NE, Moreno D, Garmendia JV, De Sanctis JB. Role of beta2 agonists in respiratory medicine with particular attention to novel patents and effects on endocrine system and immune response. ACTA ACUST UNITED AC 2012; 5:230-6. [PMID: 21913882 DOI: 10.2174/187221411797265908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 08/19/2011] [Accepted: 08/19/2011] [Indexed: 11/22/2022]
Abstract
Beta adrenergic receptors are very important in respiratory medicine. Traditionally, the stimulation of beta adrenergic receptors by beta2-agonists is commonly used for giving bronchodilation in chronic airflow obstruction However; the wide distribution of these receptors in cells and tissues other than airway smooth muscle suggests that beta agonists should offer other beneficial effects in respiratory disease. Recent studies have shown the importance of these receptors in the modulation of endocrine and immune system that affect respiratory function and may decrease therapy effectiveness in asthma and chronic obstructive pulmonary disease. New patented compound and uses have provided new insights in future therapeutics of respiratory diseases in which genetic, endocrine and immune response should be considered.
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Affiliation(s)
- Nancy E Larocca
- Department of Pathology and Physiopathology, Experimental Medicine Institute, Universidad Central de Venezuela
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E. Larocca N, Moreno D, V. Garmendia J, B. De Sanctis J. Inhibitors of Phosphoinositol 3 Kinase and NFκB for the Treatment of Chronic Obstructive Pulmonary Disease. ACTA ACUST UNITED AC 2011; 5:178-83. [DOI: 10.2174/187221311797264928] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 06/09/2011] [Accepted: 05/31/2011] [Indexed: 11/22/2022]
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Hernández N, De Sanctis JB, Losada M, Torres SH, Sosa A, Rivas M. [Oxidative stress in soleus and extensor digitorum longus (EDL) muscles of spontaneously hypertensive rats]. Invest Clin 2011; 52:239-251. [PMID: 21950195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Systemic diseases affect skeletal muscle, and inflammation and oxidative stress are some of the involved mechanisms. There is scarce information about the effects of essential hypertension on skeletal muscle. The soleus and extensor digitorum longus (EDL) muscles of spontaneously hypertensive rats (SHR) were studied compared to control Wistar Kyoto (WKY) rats. The levels of nitrite and nitrate in micromol/mg-protein; endothelial (eNOS), neuronal (nNOS), and inducible (iNOS) nitric oxide synthases, nitrotyrosine and tumour necrosis factor alpha (TNF-alpha) in ng/mg-protein were determined. Compared with controls, the SHR showed increased levels of nitrotyrosine (soleus 24.4 +/- 5.0 vs. 3.3 +/- 0.3, p<0.001; EDL 20.2 +/- 4.3 vs. 4.5 +/- 0.4, p<0.0037), iNOS (soleus 26.6 +/- 3.7 vs. 8.3 +/- 0.9; EDL 21.3 +/- 3.7 vs. 11.0 +/- 0.8, both p<0.0001) and TNF-alpha (soleus 2.2 +/- 0.5 vs. 0.6 +/- 0.1, p<0.05; EDL 1.9 +/- 0.2 vs. 0.6 +/- 0.1, p<0.02). A decrease of eNOS was found in soleus muscle (20.6 +/- 1.4 vs. 30.3 +/- 1.2, p<0.00001); of nNOS (soleus 16.8 +/- 1.4 vs. 20.7 +/- 1.8, p< 0.05; EDL 13.6 +/- 1.3 vs. 21.9 +/- 1.8, p<.005) and nitrite in EDL (5.8 +/- 0.3 vs. 7.1 +/- 0.5, p<0.026).There was a positive correlation between TNF-alpha vs. nitrotyrosine in soleus (r=0.798; p<0.031) and a tendency in EDL (r=0.739; p=0.059); iNOS vs. nitrotyrosine (soleus: r=0.908; p<0.0001; EDL: r=0.707; p<0.01), a tendency between TNF-alpha and iNOS (EDL: r=0.736; p<0.059); and a negative correlation between eNOS vs. nitrotyrosine in soleus muscle (r=-0.816; p<0.0012). In conclusion, in skeletal muscles of SHR an inflammatory process was found evidenced by the increase in TNF-alpha, nitrotyrosine and iNOS. The decreased levels of constitutive synthases, together with the higher level of iNOS, are indicative of endothelial dysfunction.
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Affiliation(s)
- Noelina Hernández
- Instituto de Medicina Experimental, Sección de Adaptación Muscular, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela.
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Yassin LM, Londoño J, Montoya G, De Sanctis JB, Rojas M, Ramírez LA, García LF, Vásquez G. Atherosclerosis development in SLE patients is not determined by monocytes ability to bind/endocytose Ox-LDL. Autoimmunity 2011; 44:201-10. [DOI: 10.3109/08916934.2010.530626] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Borges A, Op den Camp HJM, De Sanctis JB. Specific activation of human neutrophils by scorpion venom: a flow cytometry assessment. Toxicol In Vitro 2010; 25:358-67. [PMID: 20969948 DOI: 10.1016/j.tiv.2010.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 09/22/2010] [Accepted: 10/12/2010] [Indexed: 01/21/2023]
Abstract
Acute lung injury following envenomation by Tityus scorpion species is due in part to activation of the inflammatory response leading to release of cytotoxic leukocyte-derived products, including cytokines and possibly reactive oxygen species (ROS). Tityus zulianus envenomation in Venezuela produces cardiorespiratory complications and death by lung injury whereas stings by Tityus discrepans produce mainly gastrointestinal and pancreatic alterations. To ascertain the role played by granulocytes in the envenomation by T. zulianus (TzV) and T. discrepans (TdV), human peripheral blood neutrophils, eosinophils, and monocytes were exposed to scorpion venoms (0.001-5 μg/mL) and the kinetics (5-15 min) of peroxide production determined by flow cytometry, using 2',7'-dichlorodihydrofluorescein diacetate (succinimidyl ester) as a fluorescent substrate. TzV induced a significantly (p<0.01) more potent increase in peroxide production in neutrophils (for 5 and 10 min of incubation), and to a lesser extent in monocytes (5-15 min), compared to TdV. TzV induced necrosis in neutrophils at doses higher than 5 μg/mL. No effect was observed on eosinophils, suggesting that TzV specifically targets neutrophil intracellular ROS production. The TzV-stimulated pathway is protein kinase C-dependent because it was almost completely (>90%) abolished by staurosporine. The stimulatory effect is associated with the lowest molecular mass venom peptides as gel filtration fractions TzII and TzIII significantly enhanced peroxide production. The combined used of the intracellular ROS agonist, phorbol myristate acetate (PMA), and TzV produced a modest but significant increase in peroxide production suggesting the possibility of overlapping signaling cascades amongst PMA and TzV. Up-regulation of intracellular neutrophil ROS production may be an important in vivo target for TzV which could have a role to play in the cardiorespiratory complications elicited after envenomation by this species.
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Affiliation(s)
- Adolfo Borges
- Instituto de Medicina Experimental, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela.
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B. De Sanctis J, Mijares M, Suarez A, Compagnone R, Garmendia J, Moreno D, Salazar-Bookaman M. Pharmacological Properties of Thalidomide and its Analogues. ACTA ACUST UNITED AC 2010; 4:144-8. [DOI: 10.2174/187221310791163026] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Accepted: 03/15/2010] [Indexed: 11/22/2022]
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Abstract
In patients with systemic lupus erythematosus (SLE) metabolic alterations are often observed, which may be due to either the disease, the genetic background or the treatment. We studied the serum levels of the adipokines leptin, adiponectin, resistin, visfatin and ghrelin in patients with SLE and controls. Leptin levels were lower and adiponectin, ghrelin and visfatin levels were higher in the patients. No significant differences were encountered for resistin. The values of adipokines were independent of treatment, even after correction for body mass index. Inverse correlations were found among leptin and adiponectin, ghrelin and visfatin. We conclude that adipokines are involved in the metabolic imbalance of patients with SLE.
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Affiliation(s)
- Juan B De Sanctis
- Instituto de Inmunología, University Central de Venezuela, Apartado 50109, Caracas, 1050-A, Venezuela
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Suárez AI, Chavez K, Mateu E, Compagnone RS, Muñoz A, Sojo F, Arvelo F, Mijares M, De Sanctis JB. Cytotoxic activity of seco-entkaurenes from Croton caracasana on human cancer cell lines. Nat Prod Commun 2009; 4:1547-1550. [PMID: 19967987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
In the course of searching for bioactive compounds from Croton species from Venezuela, two seco-entkaurenes isolated from flowers of Croton caracasana were evaluated in vitro for their effect on cell viability by the standard MTT assay in nine human cancer cell lines of different origins and one primary culture. Both compounds induced cytotoxicity in the range of 2 to 25 microM for caracasine and 0.8 to 12 microM for caracasine acid. However, for the normal fibroblasts and the cell lines, HeLa, MCF-7, PC-3, LoVo, X-17, Jurkat E6.1 and Jurkat JCaM1.6, the IC50 values of caracasine acid were lower than their counterparts. Interestingly, no differences in IC50 were recorded for the leukemic cell lines U937 and K562. It can be concluded that the acid moiety in the structure enhances the cytotoxic effect of caracasine by a pathway which seems not to be activated in the leukemic cell lines tested.
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Affiliation(s)
- Alírica I Suárez
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela.
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36
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Suárez AI, Chavez K, Mateu E, Compagnone RS, Muñoz A, Sojo F, Arvelo F, Mijares M, De Sanctis JB. Cytotoxic Activity of seco-Entkaurenes from Croton caracasana on Human Cancer Cell Lines. Nat Prod Commun 2009. [DOI: 10.1177/1934578x0900401117] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In the course of searching for bioactive compounds from Croton species from Venezuela, two seco-entkaurenes isolated from flowers of Croton caracasana were evaluated in vitro for their effect on cell viability by the standard MTT assay in nine human cancer cell lines of different origins and one primary culture. Both compounds induced cytotoxicity in the range of 2 to 25 μM for caracasine and 0.8 to 12 μM for caracasine acid. However, for the normal fibroblasts and the cell lines, HeLa, MCF-7, PC-3, LoVo, X-17, Jurkat E6.1 and Jurkat JCaM1.6, the IC50 values of caracasine acid were lower than their counterparts. Interestingly, no differences in IC50 were recorded for the leukemic cell lines U937 and K562. It can be concluded that the acid moiety in the structure enhances the cytotoxic effect of caracasine by a pathway which seems not to be activated in the leukemic cell lines tested.
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Affiliation(s)
- Alírica I. Suárez
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
| | - Katiuska Chavez
- Escuela de Química, Facultad de Ciencias, Universidad Central de Venezuela
| | - Elsa Mateu
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
| | | | - Arturo Muñoz
- Instituto de Biología Experimental (IBE), Universidad Central de Venezuela
| | - Felipe Sojo
- Instituto de Biología Experimental (IBE), Universidad Central de Venezuela
| | - Francisco Arvelo
- Instituto de Biología Experimental (IBE), Universidad Central de Venezuela
| | - Michael Mijares
- Facultad de Farmacia, Universidad Central de Venezuela, Caracas, Venezuela
| | - Juan B. De Sanctis
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela
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De Sanctis JB, Garmendia JV, Moreno D, Larocca N, Mijares M, Di Giulio C, Salazar-Bookaman M, Wojewodka G, Radzioch D. Pharmacological modulation of Th17. ACTA ACUST UNITED AC 2009; 3:149-56. [PMID: 19519592 DOI: 10.2174/187221309788489814] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recently, a third subset of Th17 cells has been described. This T helper subset induces the release of chemokines and growth factors and causes neutrophil accumulation in several mammalian organs. Pharmacological intervention blocking Th17 generation as well as IL-17 signaling might prove useful in a variety of diseases including asthma, chronic obstructive pulmonary disease, Crohn's disease, cystic fibrosis, multiple sclerosis, psoriatic disease and rheumatoid arthritis. Here, we describe the patents that address a potential pharmacological use of promoting or targeting IL-17.
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Affiliation(s)
- Juan B De Sanctis
- Institute of Immunology, Faculty of Medicine, Apartado Postal 50109, Caracas, Venezuela.
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Rivas L, Zabaleta M, Toro F, Bianco NE, De Sanctis JB. Decreased transcription, expression and function of low-density lipoprotein receptor in leukocytes from patients with systemic lupus erythematosus. Autoimmunity 2009; 42:266-8. [DOI: 10.1080/08916930902827959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Guilbault C, Wojewodka G, Saeed Z, Hajduch M, Matouk E, De Sanctis JB, Radzioch D. Cystic Fibrosis Fatty Acid Imbalance Is Linked to Ceramide Deficiency and Corrected by Fenretinide. Am J Respir Cell Mol Biol 2009; 41:100-6. [DOI: 10.1165/rcmb.2008-0279oc] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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40
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Arciniegas E, Carrillo LM, De Sanctis JB, Candelle D. Possible role of NFkappaB in the embryonic vascular remodeling and the endothelial mesenchymal transition process. Cell Adh Migr 2008; 2:17-29. [PMID: 19262121 DOI: 10.4161/cam.2.1.5789] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The NFkappaB family of transcription factors, particularly the activated p50/p65 heterodimer, is expressed in vascular cells during intimal thickening formation when hemodynamic conditions are altered. Here, we report that p50, p65, IkappaBalpha and IKKalpha display different spatial and temporal patterns of expression and distribution during both chicken embryo aortic wall remodeling and intimal thickening development. Additionally, we show that both p50 and p65 were located in the nucleus of some mesenchymal cells expressing alpha-smooth muscle actin which are present in the spontaneous intimal thickening observed at embryonic days 12-14 of development. We also demonstrated that both NFkappaB subunits are present in monolayers of primary embryonic aortic endothelial cells attached to fibronectin and stimulated with complete medium. This study demonstrates for the first time the presence of activated NFkappaB during the remodeling of the embryonic aortic wall and the formation of intimal thickening, providing evidence that suggest a possible role for this transcription factor in the EndoMT process.
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Affiliation(s)
- Enrique Arciniegas
- Facultad de Medicina, Servicio Autónomo Instituto de Biomedicina, Universidad Central de Venezuela, Caracas, Venezuela.
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Guilbault C, De Sanctis JB, Wojewodka G, Saeed Z, Lachance C, Skinner TAA, Vilela RM, Kubow S, Lands LC, Hajduch M, Matouk E, Radzioch D. Fenretinide Corrects Newly Found Ceramide Deficiency in Cystic Fibrosis. Am J Respir Cell Mol Biol 2008; 38:47-56. [PMID: 17656682 DOI: 10.1165/rcmb.2007-0036oc] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Chronic and persistent lung infections cause the majority of morbidity and mortality in patients with cystic fibrosis (CF). Galactosyl ceramide has been previously shown to be involved in Pseudomonas internalization. Therefore, we assessed ceramide levels in the plasma of patients with CF and compared them to healthy volunteers using high-performance liquid chromatography followed by mass spectrometry. Our results demonstrate that patients with CF display significantly lower levels of several ceramide sphingolipid species, specifically C14:0, C20:1, C22:0, C22:1, and C24:0 ceramides, and dihydroxy ceramide (DHC16:0). We report that Cftr-knockout mice display diminished ceramide levels in CF-related organs (lung, pancreas, ileum, and plasma) compared with their littermate controls. Since it has been previously reported that in vitro treatment with fenretinide induced ceramide in neuroblastoma cell lines, we decided to test this drug in vivo using our Cftr-knockout mice in an attempt to correct this newly identified defect in ceramide levels. We demonstrate that treatment with fenretinide is able to increase ceramide concentrations in CF-related organs. We further assessed the biological effect of fenretinide on the ability of Cftr-knockout mice to combat lung infection with P. aeruginosa. Our data show dramatic improvement in the ability of Cftr-knockout mice to control P. aeruginosa infection. Overall, these findings not only document a novel deficiency in several ceramide species in patients with CF, but also demonstrate a pharmacologic means to correct this defect in Cftr-knockout mice. Our data provide a strong rationale for clinical intervention that may benefit patients with CF suffering from CF lung disease.
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Affiliation(s)
- Claudine Guilbault
- McGill University Health Center, Montreal General Hospital Research Institute, 1650 Cedar Avenue, Room L11-218, Montreal, PQ, H3G 1A4 Canada
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Saeed Z, Guilbault C, De Sanctis JB, Henri J, Marion D, St-Arnaud R, Radzioch D. Fenretinide prevents the development of osteoporosis in Cftr-KO mice. J Cyst Fibros 2007; 7:222-30. [PMID: 17988958 DOI: 10.1016/j.jcf.2007.09.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2007] [Revised: 09/07/2007] [Accepted: 09/10/2007] [Indexed: 11/27/2022]
Abstract
BACKGROUND The most recently described phenotype associated with Cystic Fibrosis (CF) is reduced bone mineral density which results in osteopenia and osteoporosis. The etiology of the early onset of osteoporosis in CF patients has remained to be established. It has been suggested that inadequate nutritional absorption of essential fatty acids may play a role in the altered bone metabolism. In this study, we characterized the protective effect of fenretinide [N-(4-hydroxyphenyl) retinamide], a vitamin A derivative, on the early onset of osteoporosis in cystic fibrosis transmembrane conductance regulator knockout (Cftr-KO) mice. METHODS Using micro-computed-tomography we examined the effect of fenretinide on the bone composition and architecture in a Cftr-KO mouse model which was then confirmed with histological analyses. Plasma fatty acids were quantified using thin layer chromatography-ELISA method. RESULTS Twice-weekly treatments with fenretinide, over four weeks dramatically increased trabecular bone volume compared to controls. This increase in bone volume was also related to an increased concentration of ceramide in the plasma resulting in the down regulation of phospholipid-bound AA in Cftr-KO mice. CONCLUSIONS To our knowledge, this is the first time that fenretinide's protective effect against osteoporosis has been demonstrated. The results of this study strongly suggest that fenretinide has potential to be used as a prophylaxis by preventing the early onset of osteoporosis.
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Affiliation(s)
- Zienab Saeed
- McGill University Health Centre, Montreal General Hospital, Montreal, Qc, Canada
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43
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Garmendia JV, Zabaleta M, Aldrey O, Rivera H, De Sanctis JB, Bianco NE, Blanca I. Immunophenotype characteristics of peripheral blood mononuclear leukocytes of chronic idiopathic urticaria patients. Invest Clin 2006; 47:361-9. [PMID: 17176904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The pathogenesis of chronic idiopathic urticaria (CIU) is not completely understood although autoimmunity has been proposed. The aim of the study was to assess the expression of different leukocyte antigens, by flow cytometry, assaying total blood of 29 patients with CIU and of 20 sex and age matched controls. Moreover, we assessed soluble CD154 a marker of immune cell activation, predominantly memory T cells. When patients were divided depending an their response to the autologous serum skin test (ASST), three different groups were encountered: group 1 (n=11): with negative ASST-, group 2 (n=11): positive ASST (ASST+) with normal lymphocyte counts and group 3 (n=7): ASST+ with low lymphocyte counts (< 1500 cells/mm3). A significant increase in CD19+ percentage and not in the absolute count (P < 0.05) was observed in group 1 as compared to controls and to the other groups. In contrast, CD30+, CD45RO+ and CD4+/CD45RO+ percentages and biologically active soluble CD154 levels were significantly higher (P < 0.05) in group 3 as compared to group 1 or to controls. In ASST positive groups, CD45RO+ and CD4+/CD45RO+ positiveness correlates with wheal diameter. In conclusion, memory cells may play a role in these different types of patients and in understanding CIU pathogenesis.
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Affiliation(s)
- Jenny V Garmendia
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela.
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Abstract
Understanding of the mechanisms of transplant and xenotransplant rejection represents one of the most important aspects of both basic and clinical immunology. This review discusses the roles of 1) immune response and 2) the influence of various products of arachidonic acid metabolism on immune response in graft survival. The review also includes an overview of novel therapeutic approaches developed to prevent, or at least delay, graft rejection. New discoveries in basic and clinical immunology have generated new areas of research in pharmacology that may prevent rejection more efficiently, a key issue in modern medicine.
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Affiliation(s)
- Juan B De Sanctis
- FOCIS Centers of Excellence, Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Caracas.
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45
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Marino R, Deibis L, De Sanctis JB, Bianco NE, Toro F. Interaction of immune complexes isolated from hepatitis C virus-infected individuals with human cell lines. Med Microbiol Immunol 2005; 194:73-80. [PMID: 14758545 DOI: 10.1007/s00430-003-0216-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We investigated the interaction of immune complexes (IC) isolated from hepatitis C virus (HCV)-infected individuals with several cell lines that differentially express Fc receptors, and analyzed viral infection by the presence of HCV RNA sequences. Monocytic (U937 and Monomac-6) and lymphocytic (MOLT-4 and Jurkat) cell lines were incubated with interferon- plus phorbol myristate acetate to stimulate the expression of Fc receptors before addition of IC. Cell interaction with IC was monitored by flow cytometry. Positive cell fluorescence was detected in U937 and Monomac-6 cells [mean fluorescence intensity (MFI) 10.56+/-0.8 and 11.60+/-0.8, respectively]. Incubation of cells with monoclonal antibodies against Fc receptors for IgG before addition of IC decreased MFI in both cell lines (U937 2.1+/-0.5, Monomac-6 4.4+/-0.8, P<0.001), indicating that cell-IC interaction through these receptors was inhibited. In particular, the blockage of FcgammaRII was responsible for this effect. No binding of IC with either MOLT-4 or Jurkat cell lines was detected, which correlated with a very low Fc receptor expression. HCV RNA sequences were identified in the cells up to 120 h of post incubation with IC. These results suggest that IC can mediate entry of HCV to both U-937 and Monomac-6 cell lines mainly through the FcgammaRII.
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Affiliation(s)
- Rafael Marino
- Institute of Immunology, Faculty of Medicine, Universidad Central de Venezuela, Caracas
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46
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De Sanctis JB, Arciniegas E, Bianco NE. Lipoprotein lipase protects bovine endothelial cells from human NK cytotoxic activity. Cell Immunol 2004; 227:59-69. [PMID: 15051515 DOI: 10.1016/j.cellimm.2004.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2003] [Accepted: 02/11/2004] [Indexed: 11/21/2022]
Abstract
Human lipoprotein lipase (LPL), in a dose dependent fashion, significantly inhibited spontaneous human natural killer (NK) cells, but not lymphokine-activated killer (LAK) cytotoxic activity against bovine pulmonary endothelial cells. The effect was dependent on endothelial heparan sulfate (HS) sites, since heparitinase reverted it. When HS is added before LPL, NK and LAK cytotoxicity are markedly reduced. Endothelial and NK cell priming, with LPL and HS+LPL, significantly induced CD40 and CD154 expression, respectively. Furthermore, CD40 expression was inversely proportional to lytic units (R2 = 0.9, P < 0.001). Treating endothelial cells simultaneously with indomethacin, CD154 fusion protein, and Wortmanin prevented the CD40 effect increasing xenograft rejection. LPL and HS+LPL protect bovine endothelial cells from NK cytotoxicity by inducing CD40, CD154 expression, and secretion of soluble factors. The high, non-modulated expression of adhesion receptors and the low number of HS sites account for the minor effect of CD40 in LAK cytotoxic responses against bovine endothelial cells.
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Affiliation(s)
- Juan B De Sanctis
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela.
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47
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Garmendia JV, Zabaleta M, Blanca I, Bianco NE, De Sanctis JB. Total and biologically active serum-soluble CD154 in patients with chronic idiopathic urticaria. Allergy Asthma Proc 2004; 25:121-5. [PMID: 15176497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
The pathogenesis of chronic idiopathic urticaria (CIU) is not understood completely; however, autoimmunity has been implicated. Because membrane and soluble forms of CD154 have been reported to be increased, in several autoimmune diseases, we have quantified the soluble CD154 (sCD154) molecule by a sandwich enzyme-linked immunosorbent assay in serum samples of 32 patients with CIU (aged 32 +/- 12 years) and compared them with 32 age- and sex-matched nonallergic controls. A marked increase was observed in patients with CIU as compared with controls (4.8 +/- 2.6 ng/mL versus 2.9 +/- 0.9 ng/mL; p < 0.0005). No significant differences were found between groups of patients with positive or negative autologous serum skin test. A biological assay to determine sCD154 showed that patients with positive autologous serum skin test have the highest levels (4.9 +/- 1.2 ng/mL) of biologically active sCD154 as compared with their negative counterparts (2.2 +/- 1.3 ng/mL; p < .001) and controls (0.6 +/- 0.3 ng/mL; p < 0.001). Active sCD154 can be derived from mast cell activation or other leukocytes. It is concluded that active sCD154 may be involved in the immune activation observed in patients with CIU.
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Affiliation(s)
- Jenny V Garmendia
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Caracus
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48
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Arciniegas E, Becerra A, De Sanctis JB, Graterol A, Ramírez R. CD40 and CD40L expression in the chicken embryo aorta: possible role in the endothelial-mesenchymal transdifferentiation process. Anat Rec A Discov Mol Cell Evol Biol 2003; 274:942-51. [PMID: 12973718 DOI: 10.1002/ar.a.10105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Endothelial-mesenchymal transdifferentiation (EMT) is believed to play a crucial role in embryonic vascular development and intimal thickening, which contributes to the pathogenesis of atherosclerotic lesions. However, the mechanisms by which it occurs, as well as the signals that control it, have not yet been elucidated. Given the important role played by the CD40-CD40 ligand (CD40L) system during the initiation and progress of atherosclerosis, we investigated whether both CD40 and CD40L were present in the aortic wall during EMT and the advanced stages of chicken embryo development. CD40-CD40L expression was found on endothelial cells (ECs), mesenchymal cells, and smooth muscle cells (SMCs) at all stages examined, and appeared to be distributed across the aortic wall. However, some notable differences between the expression patterns were observed. CD40 had a more restricted distribution compared to CD40L, and did not stain every cell type of the aortic wall. According to immunoblotting and enzyme-linked immunosorbent assay (ELISA) analyses, the CD40L content was highest at day 7 of development. An important and novel finding was the expression of CD40L in areas where ECs transdifferentiate into mesenchymal cells. Specifically, CD40L was associated to the surface of cells that were detaching and migrating from the monolayer of ECs, whereas for CD40 a very diffuse subcellular localization was seen at the monolayer and the detaching and migrating cells. These data suggest a possible role for CD40-CD40L interactions during EMT and the remodeling of the aorta.
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MESH Headings
- Actins/metabolism
- Animals
- Aorta/embryology
- Aorta/metabolism
- Blotting, Western
- CD40 Antigens/metabolism
- CD40 Ligand/metabolism
- Cell Differentiation
- Cells, Cultured
- Chick Embryo
- Endothelium, Vascular/cytology
- Endothelium, Vascular/embryology
- Endothelium, Vascular/metabolism
- Enzyme-Linked Immunosorbent Assay
- Fluorescent Antibody Technique, Indirect
- Immunoenzyme Techniques
- Mesoderm/cytology
- Mesoderm/metabolism
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/embryology
- Muscle, Smooth, Vascular/metabolism
- Organogenesis
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Affiliation(s)
- Enrique Arciniegas
- Laboratorio de Microscopía Electrónica, Servicio Autónomo Instituto de Biomedicina, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela.
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49
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Conesa A, Tassinari P, Aldrey O, Taylor P, Bianco NE, De Sanctis JB. Interleukin-2 induces peroxide production by primed normodense eosinophils of patients with asthma. Allergy Asthma Proc 2003; 24:27-33. [PMID: 12635575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
In this study we assessed, by flow cytometry, the effect of interleukin 2 (IL-2) on the oxidative burst of normodense eosinophils (Eos's) isolated from 15 patients with moderately severe extrinsic asthma and 17 controls. We found that IL-2 significantly induced peroxide (H2O2) production in normodense Eos's from patients with asthma on a time kinetics study. This rise was higher in patients with immunoglobulin E levels > 180 IU/mL versus normal immunoglobulin E values. The effect of IL-2 was partially blocked by using anti-Tac antibody. In contrast, IL-2 decreased H2O2 production in normodense Eos's from controls. Cell surface expression of CD25, CD122, CD132, and CD69 were also determined and no statistical differences were found between both groups. In conclusion, IL-2 is able to increase H2O2 production by normodense Eos's isolated from patients with asthma and it may contribute to bronchial epithelium damage and chronic inflammation.
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MESH Headings
- Adolescent
- Adult
- Antigens, CD/biosynthesis
- Antigens, CD/drug effects
- Antigens, Differentiation, T-Lymphocyte/biosynthesis
- Antigens, Differentiation, T-Lymphocyte/drug effects
- Antigens, Surface/biosynthesis
- Antigens, Surface/drug effects
- Asthma/blood
- Asthma/physiopathology
- Biomarkers/blood
- Carcinogens/pharmacology
- Cell Survival/drug effects
- Cell Survival/physiology
- Coloring Agents
- Eosinophils/drug effects
- Eosinophils/metabolism
- Female
- Flow Cytometry
- Humans
- Immunoglobulin E/blood
- Interleukin-2/metabolism
- Interleukin-2/pharmacology
- Lectins, C-Type
- Male
- Peroxides/blood
- Peroxides/metabolism
- Receptors, IgG/biosynthesis
- Receptors, IgG/drug effects
- Respiratory Burst/drug effects
- Respiratory Burst/physiology
- Stimulation, Chemical
- Tetradecanoylphorbol Acetate/pharmacology
- Time Factors
- Trypan Blue
- Venezuela
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Affiliation(s)
- Angela Conesa
- Instituto de Inmunología, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela
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50
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Conesa A, Tassinari P, Rivera H, De Sanctis JB, Bianco N, Aldrey O. Hypodense eosinophils: characterization of surface molecule expression. Allergy Asthma Proc 2002; 23:117-24. [PMID: 12001790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Distinct eosinophil populations have been characterized on the basis of discontinuous Percoll density gradients. In peripheral blood, normal individuals show a low number of normodense and hypodense eosinophils, contrasting with the high amount of hypodense cells in patients who have allergies. To characterize these two eosinophil populations, we analyzed membrane expression of several antigens and cytokine receptors in normodense and hypodense eosinophils from patients who have allergies and controls. Hypodense eosinophils expressed higher levels of CD122, CD69, and CD4 in both patients with allergies and control individuals when compared to normodense eosinophils. The expression of CD125, CD124, CD25, CD132, and CD23 were similar in both cell types.
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MESH Headings
- Adolescent
- Adult
- Antigens, CD/analysis
- Antigens, CD/immunology
- Antigens, Surface/analysis
- Antigens, Surface/immunology
- Asthma/immunology
- Asthma/pathology
- Cell Count
- Centrifugation, Density Gradient
- Eosinophils/immunology
- Eosinophils/pathology
- Humans
- In Vitro Techniques
- Receptors, Cytokine/analysis
- Receptors, Cytokine/immunology
- Receptors, Interleukin/analysis
- Receptors, Interleukin/immunology
- Rhinitis, Allergic, Perennial/immunology
- Rhinitis, Allergic, Perennial/pathology
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Affiliation(s)
- Angela Conesa
- Institute of Immunology, Faculty of Medicine, Central University of Venezuela, Caracas, Venezuela
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