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Consistency of a dialyzable leucocyte extract manufactured at GMP facilities by nuclear magnetic resonance spectroscopy. J Pharm Biomed Anal 2021; 196:113940. [PMID: 33549874 DOI: 10.1016/j.jpba.2021.113940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 01/24/2021] [Accepted: 01/25/2021] [Indexed: 12/20/2022]
Abstract
The present work describes the development and validation of a first report including several non-invasive NMR schemes to identify parameters as local chemical environments, homo- and heteronuclear site-specific spin correlations, diffusion coefficient-dependent polydispersity indexes and quantification of identified peptide entities that composes a commercial human Dialyzable Leucocyte Extract (DLE), Transferon, an oral liquid formulation of low-molecular-weight peptides. The above parameters were useful indicators to verify reproducibility, consistency and homogeneity among the DLE batches manufactured at Good Manufacturing Practice (GMP) facilities and for batch-releasing purposes in a quality control laboratory. The results showed that peptide identity of the DLE is represented with both high reproducible one-dimensional proton spectra and diffusion coefficient distributions that predicts in turn a weight-average molecular weight of around 6.7-7.4 kDa and a mean polydispersity index of 1.13. The obtained NMR peptide fingerprint of the analyzed DLE allowed to i) confirm its structural homogeneity by line-shape analysis, ii) identify and quantify its peptide content within the total solution with qNMR methods iii) to confirm the robustness of the technique as a feasible alternative for routine analysis of Natural or non-Natural Complex Drugs, such as DLEs.
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Ferreira AO, Polonini HC, Dijkers ECF. Postulated Adjuvant Therapeutic Strategies for COVID-19. J Pers Med 2020; 10:E80. [PMID: 32764275 PMCID: PMC7565841 DOI: 10.3390/jpm10030080] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/31/2020] [Accepted: 08/02/2020] [Indexed: 01/08/2023] Open
Abstract
The number of COVID-19 patients is still growing exponentially worldwide due to the high transmissibility of the SARS-CoV-2 virus. Therapeutic agents currently under investigation are antiviral drugs, vaccines, and other adjuvants that could relieve symptoms or improve the healing process. In this review, twelve therapeutic agents that could play a role in prophylaxis or improvement of the COVID-19-associated symptoms (as add-on substances) are discussed. Agents were identified based on their known pharmacologic mechanism of action in viral and/or nonviral fields and are postulated to interact with one or more of the seven known mechanisms associated with the SARS-CoV-2 virus: (i) regulation of the immune system; (ii) virus entrance in the cell; (iii) virus replication; (iv) hyperinflammation; (v) oxidative stress; (vi) thrombosis; and (vii) endotheliitis. Selected agents were immune transfer factor (oligo- and polypeptides from porcine spleen, ultrafiltered at <10 kDa; Imuno TF®), anti-inflammatory natural blend (Uncaria tomentosa, Endopleura uchi and Haematoccocus pluvialis; Miodesin®), zinc, selenium, ascorbic acid, cholecalciferol, ferulic acid, spirulina, N-acetylcysteine, glucosamine sulfate potassium hydrochloride, trans-resveratrol, and maltodextrin-stabilized orthosilicic acid (SiliciuMax®). This review gives the scientific background on the hypothesis that these therapeutic agents can act in synergy in the prevention and improvement of COVID-19-associated symptoms.
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Affiliation(s)
- Anderson O. Ferreira
- Fagron. Lichtenauerlaan 182, 3062 Rotterdam, The Netherlands; (H.C.P.); (E.C.F.D.)
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Pérez‐Martínez PI, Rojas‐Espinosa O, Hernández‐Chávez VG, Arce‐Paredes P, Estrada‐Parra S. Anti-inflammatory effect of omega unsaturated fatty acids and dialysable leucocyte extracts on collagen-induced arthritis in DBA/1 mice. Int J Exp Pathol 2020; 101:55-64. [PMID: 32459025 PMCID: PMC7306903 DOI: 10.1111/iep.12348] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 02/14/2020] [Accepted: 03/04/2020] [Indexed: 01/05/2023] Open
Abstract
Rheumatoid arthritis is a disabling autoimmune disease with a high global prevalence. Treatment with disease-modifying anti-arthritic drugs (DIMARDs) has been routinely used with beneficial effects but with adverse long-term consequences; novel targeted biologics and small-molecule inhibitors are promising options. In this study, we investigated whether purified omega unsaturated fatty acids (ω-UFAs) and dialysable leukocyte extracts (DLEs) prevented the development of arthritis in a model of collagen-induced arthritis (CIA) in mice. We also investigated whether the transcription factor NF-κB and the NLRP3 inflammasome were involved in the process and whether their activity was modulated by treatment. The development of arthritis was evaluated for 84 days following treatment with nothing, dexamethasone, DLEs, docosahexaenoic acid, arachidonic acid, and oleic acid. Progression of CIA was monitored by evaluating clinical manifestations, inflammatory changes, and histological alterations in the pads' articular tissues. Both DLEs and ω-UFAs led to an almost complete inhibition of the inflammatory histopathology of CIA and this was concomitant with the inhibition of NF-kB and the inhibition of the activation of NLRP3. These data suggest that ω-UFAs and DLEs might have NF-κB as a common target and that they might be used as ancillary medicines in the treatment of arthritis.
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MESH Headings
- Animals
- Anti-Inflammatory Agents/pharmacology
- Antirheumatic Agents/pharmacology
- Arachidonic Acid/pharmacology
- Arthritis, Experimental/chemically induced
- Arthritis, Experimental/metabolism
- Arthritis, Experimental/pathology
- Arthritis, Experimental/prevention & control
- Cartilage, Articular/drug effects
- Cartilage, Articular/metabolism
- Cartilage, Articular/pathology
- Cell Extracts/pharmacology
- Collagen Type II
- Dialysis
- Docosahexaenoic Acids/pharmacology
- Fatty Acids, Unsaturated/pharmacology
- Female
- Inflammasomes/drug effects
- Inflammasomes/metabolism
- Leukocytes
- Mice, Inbred BALB C
- Mice, Inbred DBA
- NF-kappa B/metabolism
- NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
- Oleic Acid/pharmacology
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Affiliation(s)
- Pamela I. Pérez‐Martínez
- Departamento de InmunologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico CityMexico
| | - Oscar Rojas‐Espinosa
- Departamento de InmunologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico CityMexico
| | - Víctor G. Hernández‐Chávez
- Departamento de MorfologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico CityMexico
| | - Patricia Arce‐Paredes
- Departamento de InmunologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico CityMexico
| | - Sergio Estrada‐Parra
- Departamento de InmunologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico CityMexico
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Hernández-Esquivel MA, Pérez-Torres A, Romero-Romero L, Reyes-Matute A, Loaiza B, Mellado-Sánchez G, Pavón L, Medina-Rivero E, Pestell RG, Pérez-Tapia SM, Velasco-Velázquez MA. The dialyzable leukocyte extract Transferon TM inhibits tumor growth and brain metastasis in a murine model of prostate cancer. Biomed Pharmacother 2018; 101:938-944. [PMID: 29635903 DOI: 10.1016/j.biopha.2018.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 03/02/2018] [Accepted: 03/05/2018] [Indexed: 12/25/2022] Open
Abstract
Prostate cancer (PCa) is the second most frequently diagnosed cancer in men worldwide. Dialyzed Leukocyte Extracts (DLEs) are heterogeneous mixtures of low-molecular-weight peptides that improve clinical responses in various diseases. Here, we analyzed the effects of TransferonTM, a commercial DLE with characterized active pharmaceutical ingredient and proven batch-to-batch reproducibility, in preclinical models of PCa. We employed v-Src-transformed murine prostate epithelial (PEC-Src) cells, which recapitulate the transcriptional profiles in human PCa, can be grown in immunocompetent mice, and consistently form bone and brain metastases. In vitro, TransferonTM did not induce cytotoxicity nor alterations in migration /invasion of PEC-Src cells. In vivo, TransferonTM reduced metastatic dissemination after intracardiac injection of PEC-Src and inhibited tumor growth of subcutaneous isotransplants. The antineoplastic effect of TransferonTM correlated with changes in tumor infiltration, increased serum concentrations of IL-12 and CXCL1, and reduced levels of VEGF. Our results suggest that the antineoplastic effect produced by TransferonTM is due to its immunomodulatory activity and not by a direct effect on cancer cells, and indicate that TransferonTM could be beneficial as adjuvant therapy in PCa patients.
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Affiliation(s)
- Miguel A Hernández-Esquivel
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Armando Pérez-Torres
- Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
| | - Laura Romero-Romero
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, UNAM, Ciudad de México, Mexico
| | - Alonso Reyes-Matute
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, UNAM, Ciudad de México, Mexico; UNIPREC, Facultad de Química, UNAM, Ciudad de México, Mexico
| | - Brenda Loaiza
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico; Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
| | - Gabriela Mellado-Sánchez
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Lenin Pavón
- Instituto Nacional de Psiquiatría Ramon de la Fuente, Ciudad de México, Mexico
| | - Emilio Medina-Rivero
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico
| | - Richard G Pestell
- Baruch S. Blumberg Institute, Pennsylvania Biotechnology Center of Bucks County, Doylestown, PA, USA; Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Sonia M Pérez-Tapia
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Mexico.
| | - Marco A Velasco-Velázquez
- Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico; Unidad Periférica de Investigación en Biomedicina Translacional, Facultad de Medicina, UNAM, Ciudad de México, Mexico.
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Medina-Rivero E, Vallejo-Castillo L, Vázquez-Leyva S, Pérez-Sánchez G, Favari L, Velasco-Velázquez M, Estrada-Parra S, Pavón L, Pérez-Tapia SM. Physicochemical Characteristics of Transferon™ Batches. BIOMED RESEARCH INTERNATIONAL 2016; 2016:7935181. [PMID: 27525277 PMCID: PMC4971316 DOI: 10.1155/2016/7935181] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/27/2016] [Accepted: 06/14/2016] [Indexed: 12/02/2022]
Abstract
Transferon, a biotherapeutic agent that has been used for the past 2 decades for diseases with an inflammatory component, has been approved by regulatory authorities in Mexico (COFEPRIS) for the treatment of patients with herpes infection. The active pharmaceutical ingredient (API) of Transferon is based on polydispersion of peptides that have been extracted from lysed human leukocytes by a dialysis process and a subsequent ultrafiltration step to select molecules below 10 kDa. To physicochemically characterize the drug product, we developed chromatographic methods and an SDS-PAGE approach to analyze the composition and the overall variability of Transferon. Reversed-phase chromatographic profiles of peptide populations demonstrated batch-to-batch consistency from 10 representative batches that harbored 4 primary peaks with a relative standard deviation (RSD) of less than 7%. Aminogram profiles exhibited 17 proteinogenic amino acids and showed that glycine was the most abundant amino acid, with a relative content of approximately 18%. Further, based on their electrophoretic migration, the peptide populations exhibited a molecular mass of about 10 kDa. Finally, we determined the Transferon fingerprint using a mass spectrometry tool. Because each batch was produced from independent pooled buffy coat samples from healthy donors, supplied by a local blood bank, our results support the consistency of the production of Transferon and reveal its peptide identity with regard to its physicochemical attributes.
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Affiliation(s)
- Emilio Medina-Rivero
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
| | - Luis Vallejo-Castillo
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
- Departamento de Farmacología, Cinvestav-IPN, Avenida Instituto Politécnico Nacional 2508, Colonia San Pedro Zacatenco, 07360 Ciudad de México, Mexico
| | - Said Vázquez-Leyva
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
| | - Gilberto Pérez-Sánchez
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
- Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente, Calzada México-Xochimilco 101, Colonia San Lorenzo Huipulco, 14370 Ciudad de México, Mexico
| | - Liliana Favari
- Departamento de Farmacología, Cinvestav-IPN, Avenida Instituto Politécnico Nacional 2508, Colonia San Pedro Zacatenco, 07360 Ciudad de México, Mexico
| | - Marco Velasco-Velázquez
- Departamento de Farmacología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 Ciudad de México, Mexico
| | - Sergio Estrada-Parra
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
| | - Lenin Pavón
- Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente, Calzada México-Xochimilco 101, Colonia San Lorenzo Huipulco, 14370 Ciudad de México, Mexico
| | - Sonia Mayra Pérez-Tapia
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
- Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
- Unidad de Investigación, Desarrollo e Innovación Médica y Biotecnológica (UDIMEB), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n, Colonia Santo Tomás, 11340 Ciudad de México, Mexico
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Medina-Rivero E, Merchand-Reyes G, Pavón L, Vázquez-Leyva S, Pérez-Sánchez G, Salinas-Jazmín N, Estrada-Parra S, Velasco-Velázquez M, Pérez-Tapia SM. Batch-to-batch reproducibility of Transferon™. J Pharm Biomed Anal 2014; 88:289-294. [PMID: 24099727 DOI: 10.1016/j.jpba.2013.09.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 09/04/2013] [Accepted: 09/06/2013] [Indexed: 11/17/2022]
Abstract
Human dialyzable leukocyte extracts (DLEs) are heterogeneous mixtures of low-molecular-weight peptides that modulate immune responses in various diseases. Due their complexity, standardized methods to identify their physicochemical properties and determine that production batches are biologically active must be established. We aimed to develop and validate a size exclusion ultra performance chromatographic (SE-UPLC) method to characterize Transferon™, a DLE that is produced under good manufacturing practices (GMPs). We analyzed an internal human DLE standard and 10 representative batches of Transferon™, all of which had a chromatographic profile characterized by 8 main peaks and a molecular weight range between 17.0 and 0.2kDa. There was high homogeneity between batches with regard to retention times and area percentages, varying by less than 0.2% and 30%, respectively, and the control chart was within 3 standard deviations. To analyze the biological activity of the batches, we studied the ability of Transferon™ to stimulate IFN-γ production in vitro. Transferon™ consistently induced IFN-γ production in Jurkat cells, demonstrating that this method can be included as a quality control step in releasing Transferon™ batches. Because all analyzed batches complied with the quality attributes that were evaluated, we conclude that the DLE Transferon™ is produced with high homogeneity.
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Affiliation(s)
- Emilio Medina-Rivero
- Unidad de Desarrollo e Investigación en Bioprocesos (UDIBI), Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México D.F., Mexico
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Lara HH, Ixtepan-Turrent L, Garza-Treviño EN, Badillo-Almaraz JI, Rodriguez-Padilla C. Antiviral mode of action of bovine dialyzable leukocyte extract against human immunodeficiency virus type 1 infection. BMC Res Notes 2011; 4:474. [PMID: 22044844 PMCID: PMC3219789 DOI: 10.1186/1756-0500-4-474] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2011] [Accepted: 11/01/2011] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Bovine dialyzable leukocyte extract (bDLE) is derived from immune leukocytes obtained from bovine spleen. DLE has demonstrated to reduce transcription of Human Immunodeficiency Virus Type 1 (HIV-1) and inactivate the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling pathway. Therefore, we decided to clarify the mode of antiviral action of bDLE on the inhibition of HIV-1 infection through a panel of antiviral assays. RESULTS The cytotoxicity, HIV-1 inhibition activity, residual infectivity of bDLE in HIV-1, time of addition experiments, fusion inhibition of bDLE for fusogenic cells and the duration of cell protection even after the removal of bDLE were all assessed in order to discover more about the mode of the antiviral action.HIV-1 infectivity was inhibited by bDLE at doses that were not cytotoxic for HeLa-CD4-LTR-β-gal cells. Pretreatment of HIV-1 with bDLE did not decrease the infectivity of these viral particles. Cell-based fusion assays helped to determine if bDLE could inhibit fusion of Env cells against CD4 cells by membrane fusion and this cell-based fusion was inhibited only when CD4 cells were treated with bDLE. Infection was inhibited in 80% compared with the positive (without EDL) at all viral life cycle stages in the time of addition experiments when bDLE was added at different time points. Finally, a cell-protection assay against HIV-1 infection by bDLE was performed after treating host cells with bDLE for 30 minutes and then removing them from treatment. From 0 to 7 hours after the bDLE was completely removed from the extracellular compartment, HIV-1 was then added to the host cells. The bDLE was found to protect the cells from HIV-1 infection, an effect that was retained for several hours. CONCLUSIONS bDLE acted as an antiviral compound and prevented host cell infection by HIV-1 at all viral life cycle stages. These cell protection effects lingered for hours after the bDLE was removed. Interestingly, bDLE inhibited fusion of fusogenic cells by acting only on CD4 cells. bDLE had no virucidal effect, but could retain its antiviral effect on target cells after it was removed from the extracellular compartment, protecting the cells from infection for hours.bDLE, which has no reported side effects or toxicity in clinical trials, should therefore be further studied to determine its potential use as a therapeutic agent in HIV-1 infection therapy, in combination with known antiretrovirals.
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Affiliation(s)
- Humberto H Lara
- Laboratorio de Inmunología y Virología, Departamento de Microbiología e Inmunología, Universidad Autonoma de Nuevo Leon, Nuevo Leon, Mexico.
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Fernández-Ortega C, Dubed M, Ramos Y, Navea L, Alvarez G, Lobaina L, López L, Casillas D, Rodríguez L. Non-induced leukocyte extract reduces HIV replication and TNF secretion. Biochem Biophys Res Commun 2005; 325:1075-81. [PMID: 15541398 DOI: 10.1016/j.bbrc.2004.10.142] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2004] [Indexed: 11/16/2022]
Abstract
According to UNAIDS, the global HIV/AIDS epidemic increased to 40 million the number of people living with the virus around the world. Dialyzable leukocyte extract obtained by our group is a low molecular weight dialyzable material from peripheral human leukocytes previously in vitro induced with Sendai virus (DLE-ind), and more recently, from non-induced leukocytes (DLE n/i). Previous results have shown the ability of DLE-ind to inhibit HIV in vitro replication in MT4 cell; to reduce TNFalpha secretion, and to delay in vivo progression to AIDS in early stage of HIV infection. In this work we present evidences that DLE n/i also inhibits HIV in vitro replication and reduces TNFalpha secretion in human whole blood like DLE obtained from induced leukocytes. Taking together these results show that both properties of DLE, HIV in vitro inhibition and TNF production modulation, are not dependent on in vitro Sendai virus induction of leukocytes.
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Affiliation(s)
- Celia Fernández-Ortega
- Department of Cell Biology, Center for Genetic Engineering and Biotechnology, Ave. 31 e/ 158 y 190, Cubanacán, Playa, AP: 6162, Havana 10600, Cuba.
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