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Reyes C, Patarroyo MA. Self-assembling peptides: Perspectives regarding biotechnological applications and vaccine development. Int J Biol Macromol 2024; 259:128944. [PMID: 38145690 DOI: 10.1016/j.ijbiomac.2023.128944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/05/2023] [Accepted: 12/19/2023] [Indexed: 12/27/2023]
Abstract
Self-assembly involves a set of molecules spontaneously interacting in a highly coordinated and dynamic manner to form a specific supramolecular structure having new and clearly defined properties. Many examples of this occur in nature and many more came from research laboratories, with their number increasing every day via ongoing research concerning complex biomolecules and the possibility of harnessing it when developing new applications. As a phenomenon, self-assembly has been described on very different types of molecules (biomolecules including), so this review focuses on what is known about peptide self-assembly, its origins, the forces behind it, how the properties of the resulting material can be tuned in relation to experimental considerations, some biotechnological applications (in which the main protagonists are peptide sequences capable of self-assembly) and what is yet to be tuned regarding their research and development.
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Affiliation(s)
- César Reyes
- PhD Biotechnology Programme, Faculty of Sciences, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá DC 111321, Colombia; Structure Analysis Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá DC 111321, Colombia; Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A.), Calle 222#55-37, Bogotá DC 111166, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá DC 111321, Colombia; Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá DC 111321, Colombia.
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Micelly-Moreno J, Barreto-Santamaría A, Arévalo-Pinzón G, Firacative C, Gómez BL, Escandón P, Patarroyo MA, Muñoz JE. Therapeutic Use of the Antimicrobial Peptide PNR20 to Resolve Disseminated Candidiasis in a Murine Model. J Fungi (Basel) 2023; 9:1149. [PMID: 38132750 PMCID: PMC10744665 DOI: 10.3390/jof9121149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/15/2023] [Accepted: 11/17/2023] [Indexed: 12/23/2023] Open
Abstract
Invasive fungal infections (IFIs) caused by Candida species are an emerging threat globally, given that patients at-risk and antifungal resistance are increasing. Antimicrobial peptides (AMPs) have shown good therapeutic capacity against different multidrug-resistant (MDR) microorganisms. This study evaluated the activity of the synthetic peptide, PNR20, against Candida albicans ATCC 10231 and a MDR Colombian clinical isolate of Candida auris. Perturbation of yeast cell surface was evaluated using scanning electron microscopy. Cell viability of Vero cells was determined to assess peptide toxicity. Additionally, survival, fungal burden, and histopathology of BALB/c mice infected intravenously with each Candida species and treated with PNR20 were analyzed. Morphological alterations were identified in both species, demonstrating the antifungal effect of PNR20. In vitro, Vero cells' viability was not affected by PNR20. All mice infected with either C. albicans or C. auris and treated with PNR20 survived and had a significant reduction in the fungal burden in the kidney compared to the control group. The histopathological analysis in mice infected and treated with PNR20 showed more preserved tissues, without the presence of yeast, compared to the control groups. This work shows that the utilization of PNR20 is a promising therapeutic alternative against disseminated candidiasis.
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Affiliation(s)
- Jeisson Micelly-Moreno
- Faculty of Health Sciences, Universidad Colegio Mayor de Cundinamarca, Bogota 110311, Colombia;
- Studies in Translational Microbiology and Emerging Diseases (MICROS) Research Group, School of Medicine and Health Sciences, Universidad de Rosario, Bogota 111221, Colombia; (C.F.); (B.L.G.)
| | - Adriana Barreto-Santamaría
- Receptor-Ligand Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogota 111321, Colombia;
| | - Gabriela Arévalo-Pinzón
- Microbiology Department, Faculty of Sciences, Pontificia Universidad Javeriana, Carrera 7 #40–62, Bogota 110231, Colombia;
| | - Carolina Firacative
- Studies in Translational Microbiology and Emerging Diseases (MICROS) Research Group, School of Medicine and Health Sciences, Universidad de Rosario, Bogota 111221, Colombia; (C.F.); (B.L.G.)
| | - Beatriz L. Gómez
- Studies in Translational Microbiology and Emerging Diseases (MICROS) Research Group, School of Medicine and Health Sciences, Universidad de Rosario, Bogota 111221, Colombia; (C.F.); (B.L.G.)
| | - Patricia Escandón
- Microbiology Group, Instituto Nacional de Salud, Bogota 111321, Colombia;
| | - Manuel A. Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogota 111321, Colombia;
- Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Bogota 111321, Colombia
| | - Julián E. Muñoz
- Studies in Translational Microbiology and Emerging Diseases (MICROS) Research Group, School of Medicine and Health Sciences, Universidad de Rosario, Bogota 111221, Colombia; (C.F.); (B.L.G.)
- Public Health Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogota 111221, Colombia
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Araujo Z, Camargo M, Moreno Pérez DA, Wide A, Pacheco D, Díaz Arévalo D, Celis Giraldo CT, Salas S, de Waard JH, Patarroyo MA. Differential NRAMP1gene's D543N genotype frequency: Increased risk of contracting tuberculosis among Venezuelan populations. Hum Immunol 2023; 84:484-491. [PMID: 37380553 DOI: 10.1016/j.humimm.2023.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 05/15/2023] [Accepted: 06/11/2023] [Indexed: 06/30/2023]
Abstract
NRAMP1 and VDR gene polymorphisms have been variably associated with susceptibility to tuberculosis (TB) amongst populations having different genetic background. NRAMP1 and VDR gene variants' association with susceptibility to active infection by Mycobacterium tuberculosis (Mtb) was analyzed in the Warao Amerindian population, an ethnic population from Venezuela's Orinoco delta region. Genomic DNA was extracted from individuals with and without TB to evaluate genetic polymorphism by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Four NRAMP1 gene polymorphisms were analyzed: D543N (rs17235409), 3' UTR (rs17235416), INT4 (rs3731865), and 274C/T (rs2276631), and one VDR gene polymorphism: FokI (rs2228570). The results showed that the genotypes D543N-A/A, 3'UTR-TGTG+/+, INT4-C/C, and 274C/T-T/T of known polymorphism in the NRAMP1 gene, as well as the genotypes FokI-F/f and FokI-f/f in the VDR gene were most often found in indigenous Warao with active TB. Binomial logistic regression was used for evaluating associations between polymorphisms and risk of contracting TB, an association between NRAMP1-D543N-A/A genotype distribution and TB susceptibility was found in Warao Amerindians. Regarding Venezuelan populations having different genetic backgrounds; statistically significant TB associations concerning NRAMP1-D543N-A/A, INT4-C/C and 3'UTR-TGTG+/+ variant genotype distributions in Warao Amerindians (indigenous) compared to Creole (admixed non-indigenous population) individuals were found. In conclusion, the results thus indicated that the association between NRAMP1-D543N-A/A genotype and TB in Warao Amerindians could support such allele's role in host susceptibility to Mtb infection.
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Affiliation(s)
- Zaida Araujo
- Laboratorio de Inmunología de Enfermedades Infecciosas, Instituto de Biomedicina "Dr. Jacinto Convit", Universidad Central de Venezuela, Apartado 4043, Caracas 1010A, Venezuela.
| | - Milena Camargo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogota, Colombia
| | - Darwin A Moreno Pérez
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Calle 222 No. 55-37, Bogotá, Colombia
| | - Albina Wide
- Laboratorio de Biotecnología, Instituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela
| | - Dailobivxon Pacheco
- Laboratorio de Inmunología de Enfermedades Infecciosas, Instituto de Biomedicina "Dr. Jacinto Convit", Universidad Central de Venezuela, Apartado 4043, Caracas 1010A, Venezuela
| | - Diana Díaz Arévalo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogota, Colombia
| | - Carmen T Celis Giraldo
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Calle 222 No. 55-37, Bogotá, Colombia
| | - Sandra Salas
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogota, Colombia
| | - Jacobus H de Waard
- Laboratorio de Tuberculosis, Instituto de Biomedicina "Dr. Jacinto Convit", Universidad Central de Venezuela, Apartado 4043, Caracas 1010A, Venezuela
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogota, Colombia; Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45 No. 26-85, Bogotá, Colombia; Health Sciences Division, Main Campus, Universidad Santo Tomás, Carrera 9 No. 51-11, Bogotá, Colombia.
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Reyes C, Patarroyo MA. Adjuvants approved for human use: What do we know and what do we need to know for designing good adjuvants? Eur J Pharmacol 2023; 945:175632. [PMID: 36863555 DOI: 10.1016/j.ejphar.2023.175632] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/21/2023] [Accepted: 02/28/2023] [Indexed: 03/04/2023]
Abstract
Adjuvants represent one of the most significant biotechnological solutions regarding vaccine development, thereby broadening the amount of candidates which can now be used and tested in vaccine formulations targeting various pathogens, as antigens which were previously discarded due to their low or null immunogenicity can now be included. Adjuvant development research has grown side-by-side with an increasing body of knowledge regarding immune systems and their recognition of foreign microorganisms. Alum-derived adjuvants were used in human vaccines for many years, even though complete understanding of their vaccination-related mechanism of action was lacking. The amount of adjuvants approved for human use has increased recently in line with attempts to interact with and stimulate the immune system. This review is aimed at summarising what is known about adjuvants, focusing on those approved for use in humans, their mechanism of action and why they are so necessary for vaccine candidate formulations; it also discusses what the future may hold in this growing research field.
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Affiliation(s)
- César Reyes
- PhD Programme in Biotechnology, Faculty of Sciences, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá, DC 111321, Colombia; Three-dimensional Structures Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, DC 111321, Colombia; Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Calle 222#55-37, Bogotá, DC 111166, Colombia.
| | - Manuel A Patarroyo
- Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45#26-85, Bogotá, DC 111321, Colombia; Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, DC 111321, Colombia.
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Pulido-Quevedo FA, Arévalo-Pinzón G, Castañeda-Ramírez JJ, Barreto-Santamaría A, Patarroyo ME, Patarroyo MA. Plasmodium falciparum rhoptry neck protein 4 has conserved regions mediating interactions with receptors on human erythrocytes and hepatocyte membrane. Int J Med Microbiol 2023; 313:151579. [PMID: 37030083 DOI: 10.1016/j.ijmm.2023.151579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 03/25/2023] [Accepted: 04/02/2023] [Indexed: 04/05/2023] Open
Abstract
Plasmodium falciparum-related malaria represents a serious worldwide public health problem due to its high mortality rates. P. falciparum expresses rhoptry neck protein 4 (PfRON4) in merozoite and sporozoite rhoptries, it participates in tight junction-TJ formation via the AMA-1/RON complex and is refractory to complete genetic deletion. Despite this, which PfRON4 key regions interact with host cells remain unknown; such information would be useful for combating falciparum malaria. Thirty-two RON4 conserved region-derived peptides were chemically synthesised for determining and characterising PfRON4 regions having high host cell binding affinity (high activity binding peptides or HABPs). Receptor-ligand interaction/binding assays determined their specific binding capability, the nature of their receptors and their ability to inhibit in vitro parasite invasion. Peptides 42477, 42479, 42480, 42505 and 42513 had greater than 2% erythrocyte binding activity, whilst peptides 42477 and 42480 specifically bound to HepG2 membrane, both of them having micromolar and submicromolar range dissociation constants (Kd). Cell-peptide interaction was sensitive to treating erythrocytes with trypsin and/or chymotrypsin and HepG2 with heparinase I and chondroitinase ABC, suggesting protein-type (erythrocyte) and heparin and/or chondroitin sulphate proteoglycan receptors (HepG2) for PfRON4. Erythrocyte invasion inhibition assays confirmed HABPs' importance during merozoite invasion. PfRON4 800-819 (42477) and 860-879 (42480) regions specifically interacted with host cells, thereby supporting their inclusion in a subunit-based, multi-antigen, multistage anti-malarial vaccine.
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Affiliation(s)
- Fredy A Pulido-Quevedo
- Receptor-Ligand Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, Colombia; MSc programme in Biochemistry, Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45 # 26-85, Bogotá, Colombia
| | - Gabriela Arévalo-Pinzón
- Microbiology Department, Faculty of Sciences, Pontificia Universidad Javeriana, Carrera 7 # 40-62, Bogotá, Colombia
| | - Jeimmy J Castañeda-Ramírez
- Receptor-Ligand Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, Colombia
| | - Adriana Barreto-Santamaría
- Receptor-Ligand Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, Colombia; Faculty of Sciences, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Calle 222 # 55-37, Bogotá, Colombia
| | - Manuel E Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, Colombia; Health Sciences Division, Main Campus, Universidad Santo Tomás, Carrera 9 # 51-11, Bogotá, Colombia; Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45 # 26-85, Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, Colombia; Health Sciences Division, Main Campus, Universidad Santo Tomás, Carrera 9 # 51-11, Bogotá, Colombia; Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45 # 26-85, Bogotá, Colombia.
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Sánchez-Barinas CD, Vergara-Vanegas V, Gamboa-Hernández CM, Ocampo M, Cuello-Oliveros A, Patarroyo MA, Patarroyo ME. Peptide-pulsed dendritic cells' immunomodulating effect regarding Mycobacterium tuberculosis growth in macrophages. Immunobiology 2023; 228:152346. [PMID: 36805110 DOI: 10.1016/j.imbio.2023.152346] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 10/06/2022] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023]
Abstract
Mycobacterium tuberculosis is one of the most successful pathogens affecting humans, being the main cause of tuberculosis. It accounts for most infectious agent-related deaths worldwide; it has been estimated that a third of the world's population are bacillus carriers. This pathogen's evolutionary adaptation is mainly due to its ability to block a host's immune system by preventing it using an effective immune response in cases of active tuberculosis. Peptide-based synthetic vaccines represent an alternative for counteracting tuberculosis; however, although peptide antigens can be identified, they are not recognised by a host's immune system. An approach using dendritic cells as immunomodulating agents for increasing synthetic peptides' antigenic capacity has thus been advanced. Dendritic cells obtained from IL to 4- and GM-CSF-treated peripheral blood mononuclear cells were pulsed with synthetic Mtb protein peptides which have been reported as participating in mycobacteria-host interactions; their amino acid sequences were modified to improve MHC-II coupling and thus increase their recognition by a host's immune system. pMHC-II/TCR interaction triggered a lymphocyte response which controlled Mtb intracellular growth in infected macrophages. This work has been aimed at contributing to understanding dendritic cells' role in Mycobacterium tuberculosis protein peptide antigen presentation, thereby increasing individuals' immune response as a means of controlling the disease.
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Affiliation(s)
- Christian D Sánchez-Barinas
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, postcode: 111321, Bogotá, Colombia; Universidad Nacional de Colombia, Carrera 45 No. 26-85, postcode: 111321, Bogotá, Colombia
| | | | | | - Marisol Ocampo
- Universidad Distrital Francisco José de Caldas, Carrera 3 # 26A - 40, postcode: 110311, Bogotá, Colombia.
| | - Angela Cuello-Oliveros
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, postcode: 111321, Bogotá, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, postcode: 111321, Bogotá, Colombia; Universidad Nacional de Colombia, Carrera 45 No. 26-85, postcode: 111321, Bogotá, Colombia
| | - Manuel E Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, postcode: 111321, Bogotá, Colombia; Universidad Nacional de Colombia, Carrera 45 No. 26-85, postcode: 111321, Bogotá, Colombia
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Patarroyo ME, Bermudez A, Alba MP, Patarroyo MA, Suarez C, Aza-Conde J, Moreno-Vranich A, Vanegas M. Stereo electronic principles for selecting fully-protective, chemically-synthesised malaria vaccines. Front Immunol 2022; 13:926680. [DOI: 10.3389/fimmu.2022.926680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 09/15/2022] [Indexed: 11/13/2022] Open
Abstract
Major histocompatibility class II molecule-peptide-T-cell receptor (MHCII-p-TCR) complex-mediated antigen presentation for a minimal subunit-based, multi-epitope, multistage, chemically-synthesised antimalarial vaccine is essential for inducing an appropriate immune response. Deep understanding of this MHCII-p-TCR complex’s stereo-electronic characteristics is fundamental for vaccine development. This review encapsulates the main principles for achieving such epitopes’ perfect fit into MHC-II human (HLADRβ̞1*) or Aotus (Aona DR) molecules. The enormous relevance of several amino acids’ physico-chemical characteristics is analysed in-depth, as is data regarding a 26.5 ± 2.5Å distance between the farthest atoms fitting into HLA-DRβ1* structures’ Pockets 1 to 9, the role of polyproline II-like (PPIIL) structures having their O and N backbone atoms orientated for establishing H-bonds with specific HLA-DRβ1*-peptide binding region (PBR) residues. The importance of residues having specific charge and orientation towards the TCR for inducing appropriate immune activation, amino acids’ role and that of structures interfering with PPIIL formation and other principles are demonstrated which have to be taken into account when designing immune, protection-inducing peptide structures (IMPIPS) against diseases scourging humankind, malaria being one of them.
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Torres R, Barreto-Santamaría A, Arévalo-Pinzón PG, Escandón P, Firacative C, Gómez BL, Patarroyo MA, Muñoz PJE. P002 Antifungal activity of antimicrobial synthetic peptides against Candida species of public health importance. Med Mycol 2022. [PMCID: PMC9509705 DOI: 10.1093/mmy/myac072.p002] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Poster session 1, September 21, 2022, 12:30 PM - 1:30 PM Background Candidiasis is one of the most frequent opportunistic infections in immunosuppressed and/or hospitalized patients. In countries like Colombia, candidiasis is associated with a mortality rate of ∼ 46%. Growing pharmacological resistance of Candida spp., and the appearance of the emerging pathogen Candida auris, have turned candidiasis into a major public health problem. Different types of antimicrobial peptides have been investigated as a therapeutic alternative to control candidiasis effectively and safely. Objective This work aimed at evaluating the in vitro antifungal activity of three synthetic antimicrobial peptides (35 409, 1609, and 29 009) obtained from Plasmodium falciparum Rif1 protein against C. auris, C. albicans, C. glabrata, C. parapsilosis, C. krusei, and C. tropicalis, species with worldwide clinical importance. Methods The minimum inhibitory concentrations (MIC) of the three peptides against Candida species were determined by the plate microdilution method; the peptides’ effect on biofilm formation in C. auris and C. albicans species was also evaluated through the XTT metabolic activity assay. Additionally, the structural damages in C. auris and C. albicans caused by the action of the peptides were observed by transmission electron microscopy (TEM) and finally, the in vitro peptides’ cytotoxicity against L929 murine fibroblasts was verified. Results Our findings showed that the three peptides herein evaluated, displayed antifungal activity in both planktonic and sessile Candida cells. Likewise, the TEM evidenced morphological alterations induced by the peptides, both in the membrane and at the intracellular level of the yeasts. As well, total safety against the murine cell line L929 with 24 h of treatment was observed. Conclusions From these results, we conclude that the antimicrobial peptides 35 409, 1609, and 29 009 are potential therapeutic alternatives against the most important Candida species in Colombia and the world.
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Affiliation(s)
- Richar Torres
- Studies in Translational Microbiology and Emerging Diseases Research Group (MICROS) , School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá D.C. , Colombia
| | - Adriana Barreto-Santamaría
- Receptor-Ligand Department , Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá D.C. , Colombia
| | | | - Patricia Escandón
- Group of Microbiology , National Institute of Health, Bogotá D.C. , Colombia
| | - Carolina Firacative
- Studies in Translational Microbiology and Emerging Diseases Research Group (MICROS) , School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá D.C. , Colombia
| | - Beatriz L Gómez
- Studies in Translational Microbiology and Emerging Diseases Research Group (MICROS) , School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá D.C. , Colombia
| | - Manuel A Patarroyo
- Receptor-Ligand Department , Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá D.C. , Colombia
- School of Medicine , Universidad Nacional de Colombia, Bogotá D.C. , Colombia
- Health Sciences Division , Main Campus, Universidad Santo Tomás, , Colombia
| | - Phd Julian E Muñoz
- Studies in Translational Microbiology and Emerging Diseases Research Group (MICROS) , School of Medicine and Health Sciences, Universidad Del Rosario, Bogotá D.C. , Colombia
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Pinillos I, Pérez C, Torres O, Patarroyo MA, Bello FJ. Establishing and characterising a new cell line from Calliphora vicina (diptera: calliphoridae) fly embryonic tissues. Heliyon 2022; 8:e10674. [PMID: 36164515 PMCID: PMC9508484 DOI: 10.1016/j.heliyon.2022.e10674] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 01/13/2022] [Revised: 04/25/2022] [Accepted: 09/09/2022] [Indexed: 11/28/2022] Open
Abstract
Insect cell lines represent a promising and expanding field as they have several research applications including biotechnology, virology, immunity, toxicology, cell signalling mechanisms and evolution. They constitute a powerful tool having a direct impact on human and veterinary medicine and agriculture. Although more than 1000 cell lines have currently been established from various insect species, Calliphora vicina-derived fly cell lines are lacking. This study was aimed at establishing a new C. vicina embryonic tissue-derived cell line. Adult flies were collected and embryonated eggs were mechanically homogenised and seeded in four types of culture media (L15, Grace's insect medium, Grace's/L15 and DMEM). Cell growth and morphological characteristics were recorded and cytogenetic and molecular patterns were determined. The CV-062020-PPB cell line was established and was shown to have optimal growth in Grace's/L15 medium. CV-062020-PPB cell monolayers that had been sub-cultured over 16 times consisted of firmly adhering cells having different morphologies; a fibroblast-like shape dominated and the karyotype had a 12-chromosome diploid number. RAPD-PCR analysis of the CV-062020-PPB cell line revealed a high similarity index and strong intraspecific relationship with C. vicina adult flies and a weaker relationship with the Lutzomyia longipalpis-derived cell line (Lulo). The CV-062020-PPB cell line constitutes the first cell line obtained from C. vicina embryonic tissues and represents an important basic and applied research tool. A new C. vicina embryonic tissue-derived cell line is here reported. Fibroblast-like cells were predominant. The cell-line karyotype was 2n = 12 diploid chromosomes. The DNA profile enabled discriminating its molecular identity.
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Affiliation(s)
- Ingred Pinillos
- Universidad de La Salle, Facultad de Ciencias Agropecuarias, Programa de Medicina Veterinaria, Bogotá DC, Colombia.,Universidad Colegio Mayor de Cundinamarca, Facultad de Ciencias de La Salud, Bogotá DC, Colombia
| | - Cindy Pérez
- Universidad Antonio Nariño, Facultad de Medicina Veterinaria, Bogotá DC, Colombia
| | - Orlando Torres
- Universidad Antonio Nariño, Facultad de Medicina Veterinaria, Bogotá DC, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Molecular Biology and Immunology Department, Bogotá DC, Colombia.,Universidad Santo Tomás, Health Sciences Division, Main Campus, Bogotá DC, Colombia.,Universidad Nacional de Colombia, Faculty of Medicine, Microbiology Department, Bogotá DC, Colombia
| | - Felio J Bello
- Universidad de La Salle, Facultad de Ciencias Agropecuarias, Programa de Medicina Veterinaria, Bogotá DC, Colombia
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Patarroyo MA, Patarroyo ME, Pabón L, Alba MP, Bermudez A, Rugeles MT, Díaz-Arevalo D, Zapata-Builes W, Zapata MI, Reyes C, Suarez CF, Agudelo W, López C, Aza-Conde J, Melo M, Escamilla L, Oviedo J, Guzmán F, Silva Y, Forero M, Flórez-Álvarez L, Aguilar-Jimenez W, Moreno-Vranich A, Garry J, Avendaño C. SM-COLSARSPROT: Highly Immunogenic Supramutational Synthetic Peptides Covering the World's Population. Front Immunol 2022; 13:859905. [PMID: 35693819 PMCID: PMC9175637 DOI: 10.3389/fimmu.2022.859905] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 01/21/2022] [Accepted: 04/19/2022] [Indexed: 12/02/2022] Open
Abstract
Fifty ~20-amino acid (aa)-long peptides were selected from functionally relevant SARS-CoV-2 S, M, and E proteins for trial B-21 and another 53 common ones, plus some new ones derived from the virus' main genetic variants for complementary trial C-21. Peptide selection was based on tremendous SARS-CoV-2 genetic variability for analysing them concerning vast human immunogenetic polymorphism for developing the first supramutational, Colombian SARS-protection (SM-COLSARSPROT), peptide mixture. Specific physicochemical rules were followed, i.e., aa predilection for polyproline type II left-handed (PPIIL) formation, replacing β-branched, aromatic aa, short-chain backbone H-bond-forming residues, π-π interactions (n→π* and π-CH), aa interaction with π systems, and molecular fragments able to interact with them, disrupting PPIIL propensity formation. All these modified structures had PPIIL formation propensity to enable target peptide interaction with human leukocyte antigen-DRβ1* (HLA-DRβ1*) molecules to mediate antigen presentation and induce an appropriate immune response. Such modified peptides were designed for human use; however, they induced high antibody titres against S, M, and E parental mutant peptides and neutralising antibodies when suitably modified and chemically synthesised for immunising 61 major histocompatibility complex class II (MHCII) DNA genotyped Aotus monkeys (matched with their corresponding HLA-DRβ1* molecules), predicted to cover 77.5% to 83.1% of the world's population. Such chemically synthesised peptide mixture represents an extremely pure, stable, reliable, and cheap vaccine for COVID-19 pandemic control, providing a new approach for a logical, rational, and soundly established methodology for other vaccine development.
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Affiliation(s)
- Manuel A. Patarroyo
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Manuel E. Patarroyo
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Laura Pabón
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Martha P. Alba
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Adriana Bermudez
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - María Teresa Rugeles
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Diana Díaz-Arevalo
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Wildeman Zapata-Builes
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - María Isabel Zapata
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - César Reyes
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Carlos F. Suarez
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - William Agudelo
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Carolina López
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Jorge Aza-Conde
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Miguel Melo
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Luis Escamilla
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Jairo Oviedo
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Fanny Guzmán
- Núcleo de Biotecnología, Pontificia U. Católica de Valparaíso, Valparaíso, Chile
| | - Yolanda Silva
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Martha Forero
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Lizdany Flórez-Álvarez
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Wbeimar Aguilar-Jimenez
- Grupo Inmunovirología, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Armando Moreno-Vranich
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Jason Garry
- Grupos: Síntesis Química, Resonancia Magnética Nuclear y Cálculo Estructural, Biología Molecular e Inmunología e Inmuno-Química, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Catalina Avendaño
- Facultad de Ciencias Agropecualrias, Universidad de Ciencias Aplicadas y Ambientales (UDCA), Bogotá, Colombia
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11
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Patarroyo ME, Patarroyo MA, Alba MP, Pabon L, Rugeles MT, Aguilar-Jimenez W, Florez L, Bermudez A, Rout AK, Griesinger C, Suarez CF, Aza-Conde J, Reyes C, Avendaño C, Samacá J, Camargo A, Silva Y, Forero M, Gonzalez E. The First Chemically-Synthesised, Highly Immunogenic Anti-SARS-CoV-2 Peptides in DNA Genotyped Aotus Monkeys for Human Use. Front Immunol 2021; 12:724060. [PMID: 34539660 PMCID: PMC8446425 DOI: 10.3389/fimmu.2021.724060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 06/11/2021] [Accepted: 08/02/2021] [Indexed: 12/12/2022] Open
Abstract
Thirty-five peptides selected from functionally-relevant SARS-CoV-2 spike (S), membrane (M), and envelope (E) proteins were suitably modified for immunising MHC class II (MHCII) DNA-genotyped Aotus monkeys and matched with HLA-DRβ1* molecules for use in humans. This was aimed at producing the first minimal subunit-based, chemically-synthesised, immunogenic molecules (COLSARSPROT) covering several HLA alleles. They were predicted to cover 48.25% of the world’s population for 6 weeks (short-term) and 33.65% for 15 weeks (long-lasting) as they induced very high immunofluorescent antibody (IFA) and ELISA titres against S, M and E parental native peptides, SARS-CoV-2 neutralising antibodies and host cell infection. The same immunological methods that led to identifying new peptides for inclusion in the COLSARSPROT mixture were used for antigenicity studies. Peptides were analysed with serum samples from patients suffering mild or severe SARS-CoV-2 infection, thereby increasing chemically-synthesised peptides’ potential coverage for the world populations up to 62.9%. These peptides’ 3D structural analysis (by 1H-NMR acquired at 600 to 900 MHz) suggested structural-functional immunological association. This first multi-protein, multi-epitope, minimal subunit-based, chemically-synthesised, highly immunogenic peptide mixture highlights such chemical synthesis methodology’s potential for rapidly obtaining very pure, highly reproducible, stable, cheap, easily-modifiable peptides for inducing immune protection against COVID-19, covering a substantial percentage of the human population.
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Affiliation(s)
- Manuel E Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,Universidad Santo Tomás, Bogotá, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Martha P Alba
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Laura Pabon
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - María T Rugeles
- Grupo Inmunovirología, Universidad de Antioquia, Medellín, Colombia
| | | | - Lizdany Florez
- Grupo Inmunovirología, Universidad de Antioquia, Medellín, Colombia
| | - Adriana Bermudez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Ashok K Rout
- Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Christian Griesinger
- Department of NMR Based Structural Biology, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany
| | - Carlos F Suarez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Jorge Aza-Conde
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - César Reyes
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Catalina Avendaño
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Jhoan Samacá
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Anny Camargo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Yolanda Silva
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Martha Forero
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Edgardo Gonzalez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
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12
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Olaya-Galán NN, Salas-Cárdenas SP, Rodriguez-Sarmiento JL, Ibáñez-Pinilla M, Monroy R, Corredor-Figueroa AP, Rubiano W, de la Peña J, Shen H, Buehring GC, Patarroyo MA, Gutierrez MF. Risk factor for breast cancer development under exposure to bovine leukemia virus in Colombian women: A case-control study. PLoS One 2021; 16:e0257492. [PMID: 34547016 PMCID: PMC8454960 DOI: 10.1371/journal.pone.0257492] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 04/01/2021] [Accepted: 09/02/2021] [Indexed: 11/19/2022] Open
Abstract
Viruses have been implicated in cancer development in both humans and animals. The role of viruses in cancer is typically to initiate cellular transformation through cellular DNA damage, although specific mechanisms remain unknown. Silent and long-term viral infections need to be present, in order to initiate cancer disease. In efforts to establish a causative role of viruses, first is needed to demonstrate the strength and consistency of associations in different populations. The aim of this study was to determine the association of bovine leukemia virus (BLV), a causative agent of leukemia in cattle, with breast cancer and its biomarkers used as prognosis of the severity of the disease (Ki67, HER2, hormonal receptors) in Colombian women. An unmatched, observational case-control study was conducted among women undergoing breast surgery between 2016-2018. Malignant samples (n = 75) were considered as cases and benign samples (n = 83) as controls. Nested-liquid PCR, in-situ PCR and immunohistochemistry were used for viral detection in blood and breast tissues. For the risk assessment, only BLV positive samples from breast tissues were included in the analysis. BLV was higher in cases group (61.3%) compared with controls (48.2%), with a statistically significant association between the virus and breast cancer in the unconditional logistic regression (adjusted-OR = 2.450,95%CI:1.088-5.517, p = 0.031). In this study, BLV was found in both blood and breast tissues of participants and an association between breast cancer and the virus was confirmed in Colombia, as an intermediate risk factor.
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Affiliation(s)
- Nury N. Olaya-Galán
- PhD Program in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Sandra P. Salas-Cárdenas
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Jorge L. Rodriguez-Sarmiento
- Department of Pathology, Hospital Universitario San Ignacio - Pontificia Universidad Javeriana, Bogotá, Colombia
| | | | - Ricardo Monroy
- Hospital Universitario Mayor Méderi – Universidad del Rosario, Bogotá, Colombia
| | - Adriana P. Corredor-Figueroa
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Wilson Rubiano
- Hospital Universitario Mayor Méderi – Universidad del Rosario, Bogotá, Colombia
| | - Jairo de la Peña
- Hospital Universitario Mayor Méderi – Universidad del Rosario, Bogotá, Colombia
| | - HuaMin Shen
- School of Public Health, University of California, Berkeley, California, United States of America
| | - Gertrude C. Buehring
- School of Public Health, University of California, Berkeley, California, United States of America
| | - Manuel A. Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
- Health Sciences Division, Main Campus, Universidad Santo Tomás, Bogotá, Colombia
| | - Maria F. Gutierrez
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogotá, Colombia
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13
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Páez-Triana L, Muñoz M, Herrera G, Moreno-Pérez DA, Tafur-Gómez GA, Montenegro D, Patarroyo MA, Paniz-Mondolfi A, Ramírez JD. Genetic diversity and population structure of Rhipicephalus sanguineus sensu lato across different regions of Colombia. Parasit Vectors 2021; 14:424. [PMID: 34425895 PMCID: PMC8383428 DOI: 10.1186/s13071-021-04898-w] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/27/2021] [Indexed: 11/15/2022] Open
Abstract
Background There has been a long-standing debate over the taxonomic status of Rhipicephalus sanguineus sensu lato. Different studies worldwide have reported the occurrence of different well-defined lineages, in addition to Rhipicephalus sanguineus sensu stricto. To date, there are very few studies examining the diverse aspects of this tick in Colombia. We assessed the population structure and genetic diversity of R. sanguineus s.l. in eight departmental regions across Colombia. Methods A total of 170 ticks were collected from dogs in different departments of Colombia. All specimens were morphologically compatible with R. sanguineus s.l. and subjected to genetic analysis. DNA sequences were obtained for the 12S rDNA, cytochrome oxidase I (COI) and internal transcribed spacer 2 (ITS2) markers. A concatenated set of all mitochondrial markers was also constructed. Next, maximum likelihood phylogenetic trees were constructed using the sequences generated herein and sequences available in GenBank. Finally, we assessed different summary statistics and analysed population structure and divergence with Fst and Dxy and demographic changes with Tajima's D and Fu and Li’s statistical tests. Results Analysis of the 12S rDNA and COI revealed that all R. sanguineus s.l. specimens collected across different regions of Colombia clustered within the tropical lineage. Micro-geographical analyses showed that the tick population from Amazonas formed a distinct cluster separated from the other sequences, with moderate Fst and Dxy values. However, no signs of a robust population structure were found within the country. The results of Fu’s FS tests, together with the haplotype networks and diversity values, signal a possible population expansion of this tick species in Colombia. Conclusions Evidence provided herein supports the tropical lineage as the main circulating lineage in Colombia, exhibiting a general lack of genetic structure except for the Amazonas region. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04898-w.
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Affiliation(s)
- Luisa Páez-Triana
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Marina Muñoz
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Giovanny Herrera
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | | | | | | | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, D.C., Colombia.,Health Sciences Division, Main Campus, Universidad Santo Tomás, Bogotá, D.C., Colombia
| | | | - Juan David Ramírez
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia.
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Pérez C, Díaz-Roa A, Bernal Y, Arenas NE, Kalume DE, Côrtes LMDC, da PI, Varela Y, Patarroyo MA, Torres O, Bello FJ. Characterising four Sarconesiopsis magellanica (Diptera: Calliphoridae) larval fat body-derived antimicrobial peptides. Mem Inst Oswaldo Cruz 2021; 116:e200587. [PMID: 34287503 PMCID: PMC8291954 DOI: 10.1590/0074-02760200587] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 11/14/2020] [Accepted: 06/07/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The inappropriate use of antibiotics has led to the accelerated growth of resistance to antibiotics. The search for new therapeutic strategies (i.e., antimicrobial peptides-AMPs) has thus become a pressing need. OBJECTIVE Characterising and evaluating Sarconesiopsis magellanica larval fat body-derived AMPs. METHODS Fat body extracts were analysed by reversed-phase high-performance liquid chromatography (RP-HPLC); mass spectrometry was used for characterising the primary structure of the AMPs so found. ProtParam (Expasy) was used for analysing the AMPs' physico-chemical properties. Synthetic AMPs' antibacterial activity was evaluated. FINDINGS Four new AMPs were obtained and called sarconesin III, IV, V and VI. Sarconesin III had an α-helix structure and sarconesins IV, V and VI had linear formations. Oligomer prediction highlighted peptide-peptide interactions, suggesting that sarconesins III, V and VI could form self-aggregations when in contact with the microbial membrane. AMPs synthesised from their native molecules' sequences had potent activity against Gram-positive bacteria and, to a lesser extent, against Gram-negative and drug-resistant bacteria. Sarconesin VI was the most efficient AMP. None of the four synthetic AMPs had a cytotoxic effect. MAIN CONCLUSIONS S. magellanica larval fat body-derived antimicrobial peptides are an important source of AMPs and could be used in different antimicrobial therapies and overcoming bacterial resistance.
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Affiliation(s)
- Cindy Pérez
- Universidad Antonio Nariño, Facultad de Medicina Veterinaria, Bogotá, Colombia
| | - Andrea Díaz-Roa
- Instituto Butantan, Laboratório de Toxinología Aplicada, São Paulo, SP, Brasil
- Universidad Nacional Abierta y a Distancia, Escuela de Ciencias Agrícolas, Pecuarias y de Medio Ambiente, Bogotá, Colombia
| | - Yuly Bernal
- Universidad Antonio Nariño, Facultad de Ciencias, Bogotá, Colombia
| | - Nelson E Arenas
- Universidad Antonio Nariño, Facultad de Ciencias, Bogotá, Colombia
| | - Dario Eluan Kalume
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório Interdisciplinar de Pesquisas Médicas, Rio de Janeiro, RJ, Brasil
| | - Luzia Monteiro de Castro Côrtes
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular e Doenças Endêmicas, Rio de Janeiro, RJ, Brasil
| | - Pedro I da
- Instituto Butantan, Laboratório de Toxinología Aplicada, São Paulo, SP, Brasil
| | - Yahson Varela
- Fundación Instituto de Inmunología de Colombia, Molecular Biology and Immunology Department, Bogotá, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia, Molecular Biology and Immunology Department, Bogotá, Colombia
- Universidad Nacional de Colombia, Faculty of Medicine, Microbiology Department, Bogotá, Colombia
- Universidad Santo Tomás, Health Sciences Division, Bogotá, Colombia
| | - Orlando Torres
- Universidad Antonio Nariño, Facultad de Medicina Veterinaria, Bogotá, Colombia
| | - Felio J Bello
- Universidad de La Salle, Facultad de Ciencias Agropecuarias, Programa de Medicina Veterinaria, Bogotá, Colombia
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15
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Pedraza L, Camargo M, Moreno-Pérez DA, Sánchez R, Del Río-Ospina L, Báez-Murcia IM, Patarroyo ME, Patarroyo MA. Identifying HLA DRB1-DQB1 alleles associated with Chlamydia trachomatis infection and in silico prediction of potentially-related peptides. Sci Rep 2021; 11:12837. [PMID: 34145318 PMCID: PMC8213839 DOI: 10.1038/s41598-021-92294-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 06/09/2021] [Indexed: 02/05/2023] Open
Abstract
HLA class II (HLA-II) genes' polymorphism influences the immune response to Chlamydia trachomatis (Ct), it is considered a sexually transmitted infection. However, associations between HLA-II alleles and Ct-infection have been little explored in humans; this study was thus aimed at determining HLA-DRB1-DQB1 alleles/haplotypes' effect on Ct-infection outcome in a cohort of Colombian women. Cervical sample DNA was used as template for detecting Ct by PCR and typing HLA-DRB1-DQB1 alleles/haplotypes by Illumina MiSeq sequencing. Survival models were adjusted for identifying the alleles/haplotypes' effect on Ct-outcome; bioinformatics tools were used for predicting secreted bacterial protein T- and B-cell epitopes. Sixteen HLA-DRB1 alleles having a significant effect on Ct-outcome were identified in the 262 women analysed. DRB1*08:02:01G and DRB1*12:01:01G were related to infection-promoting events. Only the DQB1*05:03:01G allele related to clearance/persistence events was found for HLA-DQB1. HLA-DRB1 allele homozygous women were associated with events having a lower probability of clearance and/or early occurrence of persistence. Twenty-seven peptides predicted in silico were associated with protective immunity against Ct; outer membrane and polymorphic membrane protein-derived peptides had regions having dual potential for being T- or B-cell epitopes. This article describes HLA-DRB1-DQB1 alleles/haplotypes related to Ct-infection resolution and the peptides predicted in silico which might probably be involved in host immune response. The data provides base information for developing future studies leading to the development of effective prevention measures against Ct-infection.
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Affiliation(s)
- Leidy Pedraza
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia
- MSc Programme in Microbiology, Universidad Nacional de Colombia, 111321, Bogotá D.C., Colombia
| | - Milena Camargo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), 111166, Bogotá D.C., Colombia
| | - Darwin A Moreno-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), 111166, Bogotá D.C., Colombia
| | - Ricardo Sánchez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia
- Faculty of Medicine, Universidad Nacional de Colombia, 111321, Bogotá D.C., Colombia
| | - Luisa Del Río-Ospina
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia
| | - Indira M Báez-Murcia
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia
| | - Manuel E Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia
- Faculty of Medicine, Universidad Nacional de Colombia, 111321, Bogotá D.C., Colombia
- Health Sciences Division, Main Campus, Universidad Santo Tomás, 110231, Bogotá D.C., Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá D.C., Colombia.
- Faculty of Medicine, Universidad Nacional de Colombia, 111321, Bogotá D.C., Colombia.
- Health Sciences Division, Main Campus, Universidad Santo Tomás, 110231, Bogotá D.C., Colombia.
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16
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Ortiz-Mahecha CA, Agudelo WA, Patarroyo MA, Patarroyo ME, Suárez CF. MHCBI: a pipeline for calculating peptide-MHC binding energy using semi-empirical quantum mechanical methods with explicit/implicit solvent models. Brief Bioinform 2021; 22:6274818. [PMID: 33979434 DOI: 10.1093/bib/bbab171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/10/2021] [Accepted: 03/30/2021] [Indexed: 11/12/2022] Open
Abstract
Experimentally estimating peptide-major histocompatibility complex (pMHC) binding affinity has been quite challenging due to the many receptors and the many potential ligands implicated in it. We have thus proposed a straightforward computational methodology considering the different mechanisms involved in pMHC binding to facilitate studying such receptor-ligand interactions. We have developed a pipeline using semi-empirical quantum mechanical methods for calculating pMHC class I and II molecules' binding energy (BE). This pipeline can systematize the methodology for calculating pMHC system BE, enabling the rational design of T-cell epitopes to be used as pharmaceuticals and vaccines.
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Affiliation(s)
| | | | | | | | - Carlos F Suárez
- Fundación Instituto de Inmunología de Colombia, Bogota DC, Colombia
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17
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Corredor-Figueroa AP, Olaya-Galán NN, Velandia-Álvarez S, Muñoz M, Salas-Cárdenas SP, Ibáñez-Pinilla M, Patarroyo MA, Gutiérrez MF. Co-Circulation of Bovine Leukemia Virus Haplotypes among Humans, Animals, and Food Products: New Insights of Its Zoonotic Potential. Int J Environ Res Public Health 2021; 18:ijerph18094883. [PMID: 34064361 PMCID: PMC8124648 DOI: 10.3390/ijerph18094883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/21/2021] [Accepted: 03/22/2021] [Indexed: 01/09/2023]
Abstract
Bovine leukemia virus (BLV) is the causative agent of leukemia/lymphoma in cattle. It has been found in humans and cattle-derived food products. In humans, it is described as a potential risk factor for breast cancer development. However, the transmission path remains unclear. Here, a molecular epidemiology analysis was performed to identify signatures of genetic flux of BLV among humans, animals, and food products. Sequences obtained from these sources in Colombia were used (n = 183) and compared with reference sequences available in GenBank. Phylogenetic reconstruction was performed in IQ-TREE software with the maximum likelihood algorithm. Haplotype (hap) distribution among the population was carried out with a median-joining model in Network5.0. Recombination events were inferred using SplitsTree4 software. In the phylogenetic analysis, no specific branches were identified for the Colombian sequences or for the different sources. A total of 31 haps were found, with Hap 1, 4, 5 and 7 being shared among the three sources of the study. Reticulation events among the different sources were also detected during the recombination analysis. These results show new insights about the zoonotic potential of BLV, showing evidence of genetic flux between cattle and humans. Prevention and control strategies should be considered to avoid viral dissemination as part of the One Health program policies.
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Affiliation(s)
- Adriana P. Corredor-Figueroa
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogota 110231, Colombia; (A.P.C.-F.); (S.V.-Á.); (S.P.S.-C.); (M.F.G.)
- Vicerrectoría de Investigación, Universidad ECCI, Bogota 111311, Colombia
| | - Nury N. Olaya-Galán
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogota 110231, Colombia; (A.P.C.-F.); (S.V.-Á.); (S.P.S.-C.); (M.F.G.)
- PhD Program in Biomedical and Biological Sciences, Universidad del Rosario, Bogota 111221, Colombia
- Correspondence: ; Tel.: +57-3002081160
| | - Sebastian Velandia-Álvarez
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogota 110231, Colombia; (A.P.C.-F.); (S.V.-Á.); (S.P.S.-C.); (M.F.G.)
| | - Marina Muñoz
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogota 111221, Colombia;
| | - Sandra P. Salas-Cárdenas
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogota 110231, Colombia; (A.P.C.-F.); (S.V.-Á.); (S.P.S.-C.); (M.F.G.)
| | - Milcíades Ibáñez-Pinilla
- Research Department, Hospital Universitario Mayor Méderi—Universidad del Rosario, Bogota 111411, Colombia;
| | - Manuel A. Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogota 111321, Colombia;
- Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Bogota 111321, Colombia
- Health Sciences Division, Main Campus, Universidad Santo Tomás, Bogota 110231, Colombia
| | - Maria F. Gutiérrez
- Grupo de Enfermedades Infecciosas, Laboratorio de Virología, Departamento de Microbiología, Pontificia Universidad Javeriana, Bogota 110231, Colombia; (A.P.C.-F.); (S.V.-Á.); (S.P.S.-C.); (M.F.G.)
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18
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Vega L, Herrera G, Muñoz M, Patarroyo MA, Maloney JG, Santín M, Ramírez JD. Gut microbiota profiles in diarrheic patients with co-occurrence of Clostridioides difficile and Blastocystis. PLoS One 2021; 16:e0248185. [PMID: 33725006 PMCID: PMC7963057 DOI: 10.1371/journal.pone.0248185] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 10/06/2020] [Accepted: 02/19/2021] [Indexed: 02/07/2023] Open
Abstract
Blastocystis and Clostridioides difficile co-occurrence is considered a rare event since the colonization by Blastocystis is prevented under a decrease in beneficial bacteria in the microbiota when there is C. difficile infection (CDI). This scenario has been reported once, but no information on the gut microbiota profiling is available. The present study is motivated by knowing which members of the microbiota can be found in this rare scenario and how this co-occurrence may impact the abundance of other bacteria, eukaryotes or archaea present in the gut microbiota. This study aimed to describe the bacterial and eukaryotic communities using amplicon-based sequencing of the 16S- and 18S-rRNA regions of three patient groups: (1) Blastocystis and C. difficile infection (B+/C+, n = 31), (2) C. difficile infection only (B˗/C+, n = 44), and (3) without Blastocystis or C. difficile (B˗/C˗, n = 40). Blastocystis was subtyped using amplicon-based sequencing of the 18S-rRNA gene, revealing circulation of subtypes ST1 (43.4%), ST3 (35.85%) and ST5 (20.75%) among the study population. We found that B+/C+ patients had a higher abundance of some beneficial bacteria (such as butyrate producers or bacteria with anti-inflammatory properties) compared with non-Blastocystis-colonized patients, which may suggest a shift towards an increase in beneficial bacteria when Blastocystis colonizes patients with CDI. Regarding eukaryotic communities, statistical differences in the abundance of some eukaryotic genera between the study groups were not observed. Thus, this study provides preliminary descriptive information of a potential microbiota profiling of differential presence by Blastocystis and C. difficile.
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Affiliation(s)
- Laura Vega
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Giovanny Herrera
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Marina Muñoz
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Manuel A. Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- Microbiology Department, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Jenny G. Maloney
- USDA ARS, Environmental Microbial and Food Safety Laboratory, BARC, Beltsville, MD, United States of America
| | - Monica Santín
- USDA ARS, Environmental Microbial and Food Safety Laboratory, BARC, Beltsville, MD, United States of America
| | - Juan David Ramírez
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
- * E-mail:
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19
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Aza-Conde J, Reyes C, Suárez CF, Patarroyo MA, Patarroyo ME. The molecular basis for peptide-based antimalarial vaccine development targeting erythrocyte invasion by P. falciparum. Biochem Biophys Res Commun 2020; 534:86-93. [PMID: 33316544 DOI: 10.1016/j.bbrc.2020.11.090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 11/22/2020] [Indexed: 01/08/2023]
Abstract
This work describes a methodology for developing a minimal, subunit-based, multi-epitope, multi-stage, chemically-synthesised, anti-Plasmodium falciparum malaria vaccine. Some modified high activity binding peptides (mHABPs) derived from functionally relevant P. falciparum MSP, RH5 and AMA-1 conserved amino acid regions (cHABPs) for parasite binding to and invasion of red blood cells (RBC) were selected. They were highly immunogenic as assessed by indirect immunofluorescence (IFA) and Western blot (WB) assays and protective immune response-inducers against malarial challenge in the Aotus monkey experimental model. NetMHCIIpan 4.0 was used for predicting peptide-Aotus/human major histocompatibility class II (MHCII) binding affinity in silico due to the similarity between Aotus and human immune system molecules; ∼50% of Aotus MHCII allele molecules have a counterpart in the human immune system, being Aotus-specific, whilst others enabled recognition of their human counterparts. Some peptides' 1H-NMR-assessed structural conformation was determined to explain residue modifications in mHABPs inducing secondary structure changes. These directly influenced immunological behaviour, thereby highlighting the relationship with MHCII antigen presentation. The data obtained in such functional, immunological, structural and predictive approach suggested that some of these peptides could be excellent components of a fully-protective antimalarial vaccine.
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Affiliation(s)
- Jorge Aza-Conde
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - César Reyes
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; Biomedical and Biological Sciences PhD Programme, Universidad del Rosario, Bogotá, Colombia
| | - Carlos F Suárez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Manuel E Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia; Universidad Santo Tomás, Bogotá, Colombia.
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20
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Rodríguez-Leguizamón G, Ceballos-Garzón A, Suárez CF, Patarroyo MA, Parra-Giraldo CM. Robust, Comprehensive Molecular, and Phenotypical Characterisation of Atypical Candida albicans Clinical Isolates From Bogotá, Colombia. Front Cell Infect Microbiol 2020; 10:571147. [PMID: 33344263 PMCID: PMC7738613 DOI: 10.3389/fcimb.2020.571147] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 06/10/2020] [Accepted: 11/03/2020] [Indexed: 11/13/2022] Open
Abstract
Candida albicans is commensal in human microbiota and is known to be the commonest opportunistic pathogen, having variable clinical outcomes that can lead to up to 60% mortality. Such wide clinical behaviour can be attributed to its phenotypical plasticity and high genetic diversity. This study characterised 10 Colombian clinical isolates which had already been identified as C. albicans by molecular tests; however, previous bioinformatics analysis of protein mass spectra and phenotypical characteristics has shown that this group of isolates has atypical behaviour, sharing characteristics of both C. africana and C. albicans. This study was aimed at evaluating atypical isolates' pathogenic capability in the Galleria mellonella model; susceptibility profiles were determined and MLST was used for molecular characterisation. Cluster analysis, enabling unbiased bootstrap to classify the isolates and establish their cluster membership and e-BURST, was used for establishing clonal complexes (CC). Both approaches involved using representative MLST data from the 18 traditional C. albicans clades, as well as C. albicans-associated and minor species. Ten atypical isolates were distributed as follows: 6/10 (B71, B41, B60, R6, R41, and R282) were grouped into a statistically well-supported atypical cluster (AC) and constituted a differentiated CC 6; 2/10 of the isolates were clearly grouped in clade 1 and were concurrent in CC 4 (B80, B44). Another 2/10 atypical isolates were grouped in clade 10 and concurred in CC 7 (R425, R111); most atypical isolates were related to geographically distant isolates and some represented new ST. Isolates B41 and R41 in the AC had greater virulence. Isolate B44 was fluconazole-resistant and was grouped in clade 1. The atypical nature of the isolates studied here was demonstrated by the contrast between phenotypical traits (C. africana-like), molecular markers (C. albicans-like), virulence, and antifungal resistance, highlighting the widely described genetic plasticity for this genus. Our results showed that the atypical isolates forming well-differentiated groups belonged to C. albicans. Our findings could contribute towards developing molecular epidemiology approaches for managing hospital-acquired infection.
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Affiliation(s)
- Giovanni Rodríguez-Leguizamón
- Hospital Universitario Mayor Méderi-Universidad del Rosario, Bogotá, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Andrés Ceballos-Garzón
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Carlos F Suárez
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia.,Biomathematics Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Manuel A Patarroyo
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia.,Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Claudia M Parra-Giraldo
- Unidad de Proteómica y Micosis Humanas, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
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21
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Carabali-Isajar ML, Ocampo M, Varela Y, Díaz-Arévalo D, Patarroyo MA, Patarroyo ME. Antibodies targeting Mycobacterium tuberculosis peptides inhibit mycobacterial entry to infection target cells. Int J Biol Macromol 2020; 161:712-720. [PMID: 32522539 DOI: 10.1016/j.ijbiomac.2020.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 02/17/2020] [Revised: 05/13/2020] [Accepted: 06/01/2020] [Indexed: 01/26/2023]
Abstract
The humoral immunity regarding tuberculosis can contribute towards controlling the mycobacteria and the disease. Antigens mediating such type of immunity should thus be evaluated for formulating anti-tuberculosis vaccines. The antigen recognition of seven peptides derived from proteins on Mtb H37Rv envelope and a further seven peptides modified from them was evaluated in sera taken from people suffering Mtb infection and others free from it. Peptide sequences' ability to inhibit Mtb entry to human macrophages was determined in vitro and, after isolating peptide-specific IgG antibodies, it was ascertained which ones were exercising such inhibitory function. Aotus were inoculated with the modified peptides for evaluating the activity of the antibodies so produced. Human QTF+ and QTF- sera recognised some of the peptides and inhibited Mtb entry. The same effect was seen with peptide-specific IgG regarding all the native sequences and modified ones. Sera taken from inoculated Aotus was also able to reduce the pathogen's entry. The data showed that some peptides evaluated in this study could induce antibodies able to inhibit the pathogen's entry to human macrophages, i.e. they could represent candidates for part of an anti-tuberculosis vaccine. The methodology used here complements the evaluation of promising antigens for designing effective vaccines.
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Affiliation(s)
- Mary L Carabali-Isajar
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, 111321 Bogotá, Colombia; Universidad del Rosario, Carrera 24 No. 63C-69, 111321 Bogotá, Colombia
| | - Marisol Ocampo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, 111321 Bogotá, Colombia; Universidad Distrital Francisco José de Caldas, Carrera 3 # 26A - 40, 11021 Bogotá, Colombia.
| | - Yahson Varela
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, 111321 Bogotá, Colombia; Universidad del Rosario, Carrera 24 No. 63C-69, 111321 Bogotá, Colombia
| | - Diana Díaz-Arévalo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, 111321 Bogotá, Colombia; Universidad del Rosario, Carrera 24 No. 63C-69, 111321 Bogotá, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, 111321 Bogotá, Colombia; Universidad del Rosario, Carrera 24 No. 63C-69, 111321 Bogotá, Colombia
| | - Manuel E Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, 111321 Bogotá, Colombia; Universidad Nacional de Colombia, Carrera 45 No. 26-85, 11001 Bogotá, Colombia
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22
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Reyes C, Molina-Franky J, Aza-Conde J, Suárez CF, Pabón L, Moreno-Vranich A, Patarroyo MA, Patarroyo ME. Malaria: Paving the way to developing peptide-based vaccines against invasion in infectious diseases. Biochem Biophys Res Commun 2020; 527:1021-1026. [PMID: 32439169 DOI: 10.1016/j.bbrc.2020.05.025] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/03/2020] [Indexed: 02/04/2023]
Abstract
Malaria remains a large-scale public health problem, killing more than 400,000 people and infecting up to 230 million worldwide, every year. Unfortunately, despite numerous efforts and research concerning vaccine development, results to date have been low and/or strain-specific. This work describes a strategy involving Plasmodium falciparum Duffy binding-like (DBL) and reticulocyte-binding protein homologue (RH) family-derived minimum functional peptides, netMHCIIpan3.2 parental and modified peptides' in silico binding prediction and modeling some Aotus major histocompatibility class II (MHCII) molecules based on known human molecules' structure to understand their differences. These are used to explain peptides' immunological behaviour when used as vaccine components in the Aotus model. Despite the great similarity between human and Aotus immune system molecules, around 50% of Aotus allele molecules lack a counterpart in the human immune system which could lead to an Aotus-specific vaccine. It was also confirmed that functional Plasmodium falciparum' conserved proteins are immunologically silent (in both the animal model and in-silico prediction); they must therefore be modified to elicit an appropriate immune response. Some peptides studied here had the desired behaviour and can thus be considered components of a fully-protective antimalarial vaccine.
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Affiliation(s)
- César Reyes
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Jessica Molina-Franky
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia; Universidad de Boyacá, Tunja, Colombia
| | - Jorge Aza-Conde
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Carlos F Suárez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Laura Pabón
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Armando Moreno-Vranich
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Manuel E Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; Universidad Nacional de Colombia, Bogotá, Colombia.
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23
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Moreno-Pérez DA, Patarroyo MA. Inferring Plasmodium vivax protein biology by using omics data. J Proteomics 2020; 218:103719. [PMID: 32092400 DOI: 10.1016/j.jprot.2020.103719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/10/2020] [Accepted: 02/21/2020] [Indexed: 11/18/2022]
Abstract
Deciphering Plasmodium vivax biology has long been a challenge for groups working on this parasite, mainly due to the complications involved in propagating it in vitro. However, adapting P. vivax strains in non-human primates and the arrival of high-performance analysis methods has led to increased knowledge regarding parasite protein composition and the ability of some molecules to trigger an immune response or participate in protein-protein interactions. This review describes the state of the art concerning proteomics-, immunomics- and interatomics-related P. vivax omic studies, discussing their potential use in developing disease control methods.
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Affiliation(s)
- D A Moreno-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, Colombia; School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24#63C-69, Bogotá, Colombia; Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Calle 222 No. 55-37, Bogotá, Colombia
| | - M A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50#26-20, Bogotá, Colombia; School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24#63C-69, Bogotá, Colombia.
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24
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Del Río-Ospina L, Camargo M, Soto-De León SC, Sánchez R, Moreno-Pérez DA, Patarroyo ME, Patarroyo MA. Identifying the HLA DRB1-DQB1 molecules and predicting epitopes associated with high-risk HPV infection clearance and redetection. Sci Rep 2020; 10:7306. [PMID: 32350356 PMCID: PMC7190668 DOI: 10.1038/s41598-020-64268-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 11/14/2019] [Accepted: 03/25/2020] [Indexed: 01/05/2023] Open
Abstract
Several determining factors are involved in HPV infection outcomes; human leukocyte antigen (HLA) polymorphisms have been described as related factors. This study has ascertained the effect of genetic variation on HLA-DRB1 and DQB1 genes on HPV-16/-18/-31/-33/-45 and -58 clearance and redetection in Colombian women. PCR and qPCR were used for viral identification and the Illumina MiSeq system was used for HLA-typing of cervical samples (n = 276). Survival models were adjusted for identifying alleles/haplotypes related to HPV clearance/redetection; L1/L2 protein-epitope binding to MHC-II molecules was also predicted. Significant associations suggested effects favouring or hampering clearance/redetection events depending on the viral type involved in infection, e.g. just DRB1*12:01:01G favoured HPV-16 (coeff: 4.8) and HPV-45 clearance (coeff: 12.65) whilst HPV-18 (coeff: 2E-15), HPV-31 (coeff: 8E-17) and HPV-58 hindered elimination (coeff: 1E-14). An effect was only observed for some alelles when configured as haplotypes, e.g. DRB1*04:07:01G (having the greatest frequency in the target population) was associated with DQB1*02:01:1G or *03:02:03. Epitope prediction identified 23 clearance-related peptides and 29 were redetection-related; eight might have been related to HPV-16/-18 and -58 persistence and one to HPV-18 elimination. HLA allele/haplotype relationship with the course of HPV infection (clearance/redetection) depended on the infecting HPV type, in line with the specific viral epitopes displayed.
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Affiliation(s)
- Luisa Del Río-Ospina
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Carrera 50 # 26-20, Bogotá, Colombia.,Clinical Research Group, Instituto Nacional de Cancerología, Calle 1 # 9-85, Bogotá, Colombia
| | - Milena Camargo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Carrera 50 # 26-20, Bogotá, Colombia.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Carrera 24 # 63C-69, Bogotá, Colombia.,Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Calle 222 # 55-37, Bogotá, Colombia
| | - Sara C Soto-De León
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Carrera 50 # 26-20, Bogotá, Colombia
| | - Ricardo Sánchez
- Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45 # 26-85, Bogotá, Colombia
| | - Darwin A Moreno-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Carrera 50 # 26-20, Bogotá, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24 # 63C-69, Bogotá, Colombia
| | - Manuel E Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Carrera 50 # 26-20, Bogotá, Colombia.,Faculty of Medicine, Universidad Nacional de Colombia, Carrera 45 # 26-85, Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Carrera 50 # 26-20, Bogotá, Colombia. .,School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24 # 63C-69, Bogotá, Colombia.
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25
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Avendaño C, Celis-Giraldo C, Ordoñez D, Díaz-Arévalo D, Rodríguez-Habibe I, Oviedo J, Curtidor H, García-Castiblanco S, Martínez-Panqueva F, Camargo-Castañeda A, Reyes C, Bohórquez MD, Vanegas M, Cantor D, Patarroyo ME, Patarroyo MA. Evaluating the immunogenicity of chemically-synthesised peptides derived from foot-and-mouth disease VP1, VP2 and VP3 proteins as vaccine candidates. Vaccine 2020; 38:3942-3951. [PMID: 32307277 DOI: 10.1016/j.vaccine.2020.04.006] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 11/25/2022]
Abstract
Foot-and-mouth disease (FMD) is one of the most contagious veterinary viral diseases known, having economic, social and potentially devastating environmental impacts. The vaccines currently being marketed/sold around the world for disease control and prevention in bovines do not stimulate the production of antibodies having crossed reactions to different serotypes. This means that if an animal becomes infected by a serotype which has not been included in a vaccine then it will develop the disease. Synthetic peptide vaccines represent a safer option and (depending on the design) can stimulate antibodies protecting against different variants. Based on the forgoing, this work was aimed at evaluating FMDV VP1, VP2 and VP3 protein-derived, modified and chemically-synthesised peptides' ability to induce an immune response for developing a vaccine contributing towards controlling the disease. VP1, VP2 and VP3 proteins' conserved regions were selected for this. Peptides from these regions were chemically synthesised; binding assays were then carried out for ascertaining whether they were involved in BHK-21 cell binding. Selected peptides' structure and location were studied. Peptides which did bind were modified and formulated with Montanide ISA 70 adjuvant; 17 animals were immunised twice with the formulation. The animals were genotyped by amplifying the BoLA-DRB3.2 gene. Blood samples were taken from 17 cattle on day 43 post-first immunisation for studying the formulation's immunogenicity. The sera were used in ELISA, immunofluorescence, flow cytometry, immunoadsorption and seroneutralisation assays. The A24 Cruzeiro and O1 Campos virus serotypes were used for these assays. The results revealed that even though protein exposure and 3D structure might be different amongst serotypes, the antibodies so produced could inhibit virus entry to cells, thereby showing the selected peptides' in vitro protection-inducing ability.
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Affiliation(s)
- Catalina Avendaño
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Carmen Celis-Giraldo
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Diego Ordoñez
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Diana Díaz-Arévalo
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia; Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Ibett Rodríguez-Habibe
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Jairo Oviedo
- Dirección Técnica de Análisis y Diagnóstico Veterinario. Instituto Colombiano Agropecuario (ICA), Bogotá, Colombia
| | - Hernando Curtidor
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | | | - Fredy Martínez-Panqueva
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Andrea Camargo-Castañeda
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - César Reyes
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Michel D Bohórquez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Magnolia Vanegas
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Daniela Cantor
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Manuel E Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia; Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Manuel A Patarroyo
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia; Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.
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26
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Arévalo-Pinzón G, Garzón-Ospina D, Pulido FA, Bermúdez M, Forero-Rodríguez J, Rodríguez-Mesa XM, Reyes-Guarín LP, Suárez CF, Patarroyo MA. Plasmodium vivax Cell Traversal Protein for Ookinetes and Sporozoites (CelTOS) Functionally Restricted Regions Are Involved in Specific Host-Pathogen Interactions. Front Cell Infect Microbiol 2020; 10:119. [PMID: 32266169 PMCID: PMC7105572 DOI: 10.3389/fcimb.2020.00119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 12/27/2019] [Accepted: 03/04/2020] [Indexed: 11/13/2022] Open
Abstract
Following the injection of Plasmodium sporozoites by a female Anopheles mosquito into the dermis, they become engaged on a long journey to hepatic tissue where they must migrate through different types of cell to become established in parasitophorous vacuoles in hepatocytes. Studies have shown that proteins such as cell traversal protein for Plasmodium ookinetes and sporozoites (CelTOS) play a crucial role in cell-traversal ability. Although CelTOS has been extensively studied in various species and included in pre-clinical assays it remains unknown which P. vivax CelTOS (PvCelTOS) regions are key in its interaction with traversed or target cells (Kupffer or hepatocytes) and what type of pressure, association and polymorphism these important regions could have to improve their candidacy as important vaccine antigens. This work has described producing a recombinant PvCelTOS which was recognized by ~30% P. vivax-infected individuals, thereby confirming its ability for inducing a natural immune response. PvCelTOS' genetic diversity in Colombia and its ability to interact with HeLa (traversal cell) and/or HepG2 cell (target cell) external membrane have been assessed. One region in the PvCelTOS amino-terminal region and another in its C-terminus were seen to be participating in host-pathogen interactions. These regions had important functional constraint signals (ω < 0.3 and several sites under negative selection) and were able to inhibit specific rPvCelTOS binding to HeLa cells. This led to suggesting that sequences between aa 41-60 (40833) and 141-160 (40838) represent promising candidates for an anti-P. vivax subunit-based vaccine.
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Affiliation(s)
- Gabriela Arévalo-Pinzón
- Receptor-Ligand Department, Fundacion Instituto de Inmunologia de Colombia (FIDIC), Bogota, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Bogota, Colombia
| | - Diego Garzón-Ospina
- PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogota, Colombia
| | - Fredy A Pulido
- Receptor-Ligand Department, Fundacion Instituto de Inmunologia de Colombia (FIDIC), Bogota, Colombia
| | - Maritza Bermúdez
- Receptor-Ligand Department, Fundacion Instituto de Inmunologia de Colombia (FIDIC), Bogota, Colombia
| | - Johanna Forero-Rodríguez
- Molecular Biology and Immunology Department, Fundacion Instituto de Immunologia de Colombia (FIDIC), Bogota, Colombia
| | - Xandy M Rodríguez-Mesa
- Molecular Biology and Immunology Department, Fundacion Instituto de Immunologia de Colombia (FIDIC), Bogota, Colombia
| | - Leidy P Reyes-Guarín
- Molecular Biology and Immunology Department, Fundacion Instituto de Immunologia de Colombia (FIDIC), Bogota, Colombia
| | - Carlos F Suárez
- School of Medicine and Health Sciences, Universidad del Rosario, Bogota, Colombia.,Biomathematics Department, Fundacion Instituto de Immunologia de Colombia (FIDIC), Bogota, Colombia
| | - Manuel A Patarroyo
- School of Medicine and Health Sciences, Universidad del Rosario, Bogota, Colombia.,Molecular Biology and Immunology Department, Fundacion Instituto de Immunologia de Colombia (FIDIC), Bogota, Colombia
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27
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Lambraño J, Curtidor H, Avendaño C, Díaz-Arévalo D, Roa L, Vanegas M, Patarroyo ME, Patarroyo MA. Preliminary Evaluation of the Safety and Immunogenicity of an Antimalarial Vaccine Candidate Modified Peptide (IMPIPS) Mixture in a Murine Model. J Immunol Res 2019; 2019:3832513. [PMID: 32083140 PMCID: PMC7012257 DOI: 10.1155/2019/3832513] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 12/03/2019] [Indexed: 11/22/2022] Open
Abstract
Malaria continues being a high-impact disease regarding public health worldwide; the WHO report for malaria in 2018 estimated that ~219 million cases occurred in 2017, mostly caused by the parasite Plasmodium falciparum. The disease cost the lives of more than 400,000 people, mainly in Africa. In spite of great efforts aimed at developing better prevention (i.e., a highly effective vaccine), diagnosis, and treatment methods for malaria, no efficient solution to this disease has been advanced to date. The Fundación Instituto de Inmunología de Colombia (FIDIC) has been developing studies aimed at furthering the search for vaccine candidates for controlling P. falciparum malaria. However, vaccine development involves safety and immunogenicity studies regarding their formulation in animal models before proceeding to clinical studies. The present work has thus been aimed at evaluating the safety and immunogenicity of a mixture of 23 chemically synthesised, modified peptides (immune protection-inducing protein structure (IMPIPS)) derived from different P. falciparum proteins. Single and repeat dose assays were thus used with male and female BALB/c mice which were immunised with the IMPIPS mixture. It was found that single and repeat dose immunisation with the IMPIPS mixture was safe, both locally and systemically. It was observed that the antibodies so stimulated recognised the parasite's native proteins and inhibited merozoite invasion of red blood cells in vitro when evaluating the humoral immune response induced by the IMPIPS mixture. Such results suggested that the IMPIPS peptide mixture could be a safe candidate to be tested during the next stage involved in developing an antimalarial vaccine, evaluating local safety, immunogenicity, and protection in a nonhuman primate model.
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Affiliation(s)
- Jennifer Lambraño
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- Master's Programme in Biochemistry, Medical School, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Hernando Curtidor
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Catalina Avendaño
- Faculty of Animal Science, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Diana Díaz-Arévalo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Leonardo Roa
- Faculty of Animal Science, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá, Colombia
| | - Magnolia Vanegas
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Manuel E. Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- Pathology Department, Medical School, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Manuel A. Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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28
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Muñoz M, Restrepo-Montoya D, Kumar N, Iraola G, Herrera G, Ríos-Chaparro DI, Díaz-Arévalo D, Patarroyo MA, Lawley TD, Ramírez JD. Comparative genomics identifies potential virulence factors in Clostridium tertium and C. paraputrificum. Virulence 2019; 10:657-676. [PMID: 31304854 PMCID: PMC6629180 DOI: 10.1080/21505594.2019.1637699] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 03/26/2019] [Revised: 05/23/2019] [Accepted: 06/25/2019] [Indexed: 01/23/2023] Open
Abstract
Some well-known Clostridiales species such as Clostridium difficile and C. perfringens are agents of high impact diseases worldwide. Nevertheless, other foreseen Clostridiales species have recently emerged such as Clostridium tertium and C. paraputrificum. Three fecal isolates were identified as Clostridium tertium (Gcol.A2 and Gcol.A43) and C. paraputrificum (Gcol.A11) during public health screening for C. difficile infections in Colombia. C. paraputrificum genomes were highly diverse and contained large numbers of accessory genes. Genetic diversity and accessory gene percentage were lower among the C. tertium genomes than in the C. paraputrificum genomes. C. difficile tcdA and tcdB toxins encoding homologous sequences and other potential virulence factors were also identified. EndoA interferase, a toxic component of the type II toxin-antitoxin system, was found among the C. tertium genomes. toxA was the only toxin encoding gene detected in Gcol.A43, the Colombian isolate with an experimentally-determined high cytotoxic effect. Gcol.A2 and Gcol.A43 had higher sporulation efficiencies than Gcol.A11 (84.5%, 83.8% and 57.0%, respectively), as supported by the greater number of proteins associated with sporulation pathways in the C. tertium genomes compared with the C. paraputrificum genomes (33.3 and 28.4 on average, respectively). This work allowed complete genome description of two clostridiales species revealing high levels of intra-taxa diversity, accessory genomes containing virulence-factors encoding genes (especially in C. paraputrificum), with proteins involved in sporulation processes more highly represented in C. tertium. These finding suggest the need to advance in the study of those species with potential importance at public health level.
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Affiliation(s)
- Marina Muñoz
- Grupo de Investigaciones Microbiológicas – UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
- Posgrado Interfacultades, Doctorado en Biotecnología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Daniel Restrepo-Montoya
- Grupo de Investigaciones Microbiológicas – UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
- Genomics and Bioinformatics Program, North Dakota State University, Fargo, ND, USA
| | - Nitin Kumar
- Host–Microbiota Interactions Laboratory, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Gregorio Iraola
- Microbial Genomics Laboratory, Institut Pasteur Montevideo, Montevideo, Uruguay
- Center for Integrative Biology, Universidad Mayor, Santiago de Chile, Chile
| | - Giovanny Herrera
- Grupo de Investigaciones Microbiológicas – UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Dora I. Ríos-Chaparro
- Grupo de Investigaciones Microbiológicas – UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Diana Díaz-Arévalo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- Faculty of Animal Sciences, Universidad de Ciencias Aplicadas y Ambientales (UDCA), Bogotá, Colombia
| | - Manuel A. Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Trevor D. Lawley
- Host–Microbiota Interactions Laboratory, Wellcome Trust Sanger Institute, Hinxton, UK
| | - Juan David Ramírez
- Grupo de Investigaciones Microbiológicas – UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
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Ortiz-Mahecha CA, Bohórquez HJ, Agudelo WA, Patarroyo MA, Patarroyo ME, Suárez CF. Assessing Peptide Binding to MHC II: An Accurate Semiempirical Quantum Mechanics Based Proposal. J Chem Inf Model 2019; 59:5148-5160. [DOI: 10.1021/acs.jcim.9b00672] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
| | - Hugo J. Bohórquez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá D.C., Colombia
- Universidad de Ciencias Aplicadas y Ambientales (UDCA), Bogotá D.C., Colombia
| | - William A. Agudelo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá D.C., Colombia
| | - Manuel A. Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá D.C., Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá D.C., Colombia
| | - Manuel E. Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá D.C., Colombia
- Universidad Nacional de Colombia, Bogotá D.C., Colombia
| | - Carlos F. Suárez
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá D.C., Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá D.C., Colombia
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30
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Del Río-Ospina L, Camargo M, Soto-De León SC, Robayo-Calderón KL, Garzón-Ospina D, Patarroyo ME, Patarroyo MA. Using next-generation sequencing for characterising HLA-DRB1 and DQB1 loci in a cohort of Colombian women. HLA 2019; 94:425-434. [PMID: 31441245 DOI: 10.1111/tan.13672] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 01/14/2019] [Revised: 08/16/2019] [Accepted: 08/19/2019] [Indexed: 11/29/2022]
Abstract
The Colombian population is characterised by a high genetic diversity, secondary to the ethnic mixture arising from colonisation. Unfortunately, few reports are available regarding HLA-DRB1 and DQB1 diversity in Colombia to date. HLA-DRB1 and DQB1 diversity was identified in this study using next-generating sequencing (NGS) on a cohort of Colombian women. Cervical samples taken from 276 women were used for typing DRB1 and DQB1 loci by Illumina MiSeq. Allele and haplotype frequencies were calculated using an expectation-maximisation algorithm. Hardy-Weinberg Equilibrium and linkage disequilibrium (LD) between loci were evaluated. Forty-seven DRB1 alleles and 14 DQB1 alleles were identified. DRB1*04:07:01G and DQB1*03:02:01G alleles occurred most frequently in the target population. Significant LD was found in 44 out of the 144 identified haplotypes, within which DRB1*04:07:01G-DQB1*03:02:01G occurred most frequently (6.56%). The alleles and haplotypes found with NGS agreed with that found in previous reports involving lower resolution for the Colombian population, and greater genetic variability was found, especially concerning DRB1. Comparing allele and haplotype frequency distribution in the target population to that of other populations denoted HLA system intra- and inter-population diversity.
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Affiliation(s)
- Luisa Del Río-Ospina
- Molecular Biology and Inmunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Clínical Research Group, Instituto Nacional de Cancerología E.S.E., Bogotá, Colombia
| | - Milena Camargo
- Molecular Biology and Inmunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Sara C Soto-De León
- Molecular Biology and Inmunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia
| | - Karen L Robayo-Calderón
- Molecular Biology and Inmunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia
| | - Diego Garzón-Ospina
- Molecular Biology and Inmunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Manuel E Patarroyo
- Molecular Biology and Inmunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Faculty of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Inmunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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31
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Muñoz M, Restrepo-Montoya D, Kumar N, Iraola G, Camargo M, Díaz-Arévalo D, Roa-Molina NS, Tellez MA, Herrera G, Ríos-Chaparro DI, Birchenall C, Pinilla D, Pardo-Oviedo JM, Rodríguez-Leguizamón G, Josa DF, Lawley TD, Patarroyo MA, Ramírez JD. Integrated genomic epidemiology and phenotypic profiling of Clostridium difficile across intra-hospital and community populations in Colombia. Sci Rep 2019; 9:11293. [PMID: 31383872 PMCID: PMC6683185 DOI: 10.1038/s41598-019-47688-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 07/22/2019] [Indexed: 02/06/2023] Open
Abstract
Clostridium difficile, the causal agent of antibiotic-associated diarrhea, has a complex epidemiology poorly studied in Latin America. We performed a robust genomic and phenotypic profiling of 53 C. difficile clinical isolates established from diarrheal samples from either intrahospital (IH) or community (CO) populations in central Colombia. In vitro tests were conducted to evaluate the cytopathic effect, the minimum inhibitory concentration of ten antimicrobial agents, the sporulation efficiency and the colony forming ability. Eleven different sequence types (STs) were found, the majority present individually in each sample, however in three samples two different STs were isolated. Interestingly, CO patients were infected with STs associated with hypervirulent strains (ST-1 in Clade-2). Three coexistence events (two STs simultaneously detected in the same sample) were observed always involving ST-8 from Clade-1. A total of 2,502 genes were present in 99% of the isolates with 95% of identity or more, it represents a core genome of 28.6% of the 8,735 total genes identified in the set of genomes. A high cytopathic effect was observed for the isolates positive for the two main toxins but negative for binary toxin (TcdA+/TcdB+/CDT- toxin production type), found only in Clade-1. Molecular markers conferring resistance to fluoroquinolones (cdeA and gyrA) and to sulfonamides (folP) were the most frequent in the analyzed genomes. In addition, 15 other markers were found mostly in Clade-2 isolates. These results highlight the regional differences that C. difficile isolates display, being in this case the CO isolates the ones having a greater number of accessory genes and virulence-associated factors.
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Affiliation(s)
- Marina Muñoz
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Departamento de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
- Posgrado Interfacultades Doctorado en Biotecnología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Daniel Restrepo-Montoya
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Departamento de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
- Genomics and Bioinformatics Department, North Dakota State University, Fargo, North Dakota, USA
| | - Nitin Kumar
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK
| | - Gregorio Iraola
- Microbial Genomics Laboratory, Institut Pasteur Montevideo, Montevideo, Uruguay
- Center for Integrative Biology, Universidad Mayor, Santiago de Chile, Chile
| | - Milena Camargo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Diana Díaz-Arévalo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- Faculty of Animal Sciences, Universidad de Ciencias Aplicadas y Ambientales (UDCA), Bogotá, Colombia
- Hygea group, Faculty of Health Sciences, Universidad de Boyacá, Tunja, Colombia
| | - Nelly S Roa-Molina
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Mayra A Tellez
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Giovanny Herrera
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Departamento de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
- PhD Programme in Biomedical and Biological Sciences, Faculty of Natural Sciences and Mathematics/School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Dora I Ríos-Chaparro
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Departamento de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Claudia Birchenall
- Hospital Universitario Mayor - Méderi, Universidad del Rosario, Bogotá, Colombia
| | - Darío Pinilla
- Hospital Universitario Mayor - Méderi, Universidad del Rosario, Bogotá, Colombia
| | - Juan M Pardo-Oviedo
- Hospital Universitario Mayor - Méderi, Universidad del Rosario, Bogotá, Colombia
| | | | | | - Trevor D Lawley
- Host-Microbiota Interactions Laboratory, Wellcome Sanger Institute, Hinxton, UK
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Juan David Ramírez
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Departamento de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia.
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Olaya-Galán NN, Salas-Cárdenas SP, Corredor-Figueroa AP, Buehring GC, Shen H, Patarroyo MA, Gutierrez MF. Abstract 4220: Evidence of bovine leukemia virus genes detected in Colombian women with and without breast cancer: A zoonotic infection. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-4220] [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
Bovine leukemia virus (BLV), is an oncogenic virus that infects cattle worldwide and is the causative agent of leukemias, lymphomas and persistent lymphocytosis. BLV has also been found in humans and has recently been proposed as a risk factor for developing breast cancer in the USA and Australia. In Colombia, there is evidence of infection in women but no correlation with breast cancer. This study was aimed at comparing the presence of the virus in breast tissue from different sources: necropsies of women without tumor development (normal breast tissue), and surgeries of benign and malignant tumors, to better understand the role of BLV in Colombia. A cross-sectional study was designed in which 315 participants were included. Paired samples of breast tissue and blood were obtained from surgeries and necropsies in Bogotá city. The presence of BLV was determined by nested PCR and in situPCR targeting different viral genes. For the nested PCR, DNA was extracted from fresh tissues and blood samples, and human GAPDH amplification was carried out to assess DNA quality for the PCRs. Afterwards, different BLV genes were detected by nested PCR. In situ PCR was directed to the tax region of the virus and was done to FFPE sections of the same samples. Positive samples were considered when at least one of the techniques was positive for the virus and were confirmed by Sanger sequencing. Correlation with other risk factors related with breast cancer (HER2, PR, ER and KI67) and the presence of the virus were determined. From the overall population, 40% of the samples were positive for BLV. In the breast cancer population, 37% of the samples were infected with the virus; similar distributions were found in the other groups (pre-malignant, 33%; benign tumors, 27%). Interestingly, almost 60% of the samples were infected in the no-tumor group. 22% of the samples were positive for both breast tissue and blood from the same patients. All the positive samples were confirmed to have BLV by Sanger sequencing of different gene regions of the virus. When correlating viral presence with other risk factors of breast cancer, it was found that most of the positive BLV samples were also positive for progesterone (79%) and estrogen (93%) receptors and were negative for the HER2 mutation. It could thus be possible that the hormonal profile could be linked with the presence of the virus. This study shows that irrespective of the breast pathology, BLV can be found in Colombian women both in breast tissue and blood. Sanger sequencing showed that the virus found in humans is similar to previously reported sequences obtained from cattle with high identity percentages. Even when the biology of the virus remains unknown in humans, it is a big concern to find the presence of an oncogenic virus coming from animals. Further studies are needed to understand the viral mechanisms related with cancer in humans.
Citation Format: Nury N. Olaya-Galán, Sandra P. Salas-Cárdenas, Adriana P. Corredor-Figueroa, Gertrude C. Buehring, HuaMin Shen, Manuel A. Patarroyo, Ma, Fernanda Gutierrez. Evidence of bovine leukemia virus genes detected in Colombian women with and without breast cancer: A zoonotic infection [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 4220.
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Forero AJ, Muñoz M, Camargo M, Soto-De León SC, Ríos-Chaparro DI, Birchenall C, Pinilla D, Pardo JM, Josa DF, Patarroyo MA, Ramírez JD. High frequency of toxigenic Clostridium difficile and Clostridium perfringens coinfection among diarrheic patients at health care facility-onset (HCFO) and community-onset (CO) centers in Bogotá, Colombia. Gut Pathog 2019; 11:27. [PMID: 31171939 PMCID: PMC6545673 DOI: 10.1186/s13099-019-0308-7] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 05/29/2019] [Indexed: 12/31/2022] Open
Abstract
Background The aim of this study was to evaluate the frequency of toxigenic C. difficile and C. perfringens infections at health care facility-onset (HCFO) and community-onset (CO), in two health care centers (HCC) in Bogotá, Colombia. A total of 220 stool samples from patients presenting diarrhea acquired at HCFO or CO were analyzed by several PCR tests. Results We found that 65.5% (n = 144) of the population had C. difficile infection, followed by toxigenic C. difficile with 57.3% (n = 126), and finally toxigenic C. perfringens with a frequency of 32.7% (n = 72). Conclusions This study is the first molecular detection and characterization of C. difficile and C. perfringens in HCFO and CO in Latin America and demonstrates a relevant frequency of these two species, including coinfection and strikingly diverse toxigenic profiles, especially in the CO.
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Affiliation(s)
- Alex J Forero
- 1Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Carrera 24 # 63C - 69, Bogotá, Colombia.,2Especialización en Microbiología Médica, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Marina Muñoz
- 1Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Carrera 24 # 63C - 69, Bogotá, Colombia.,3Posgrado Interfacultades Doctorado en Biotecnología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Milena Camargo
- 4Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Sara C Soto-De León
- 5Laboratorio de Investigación Biomédica y Biología Molecular, Facultad de Ciencias de la Salud, Universidad del Sinú, Montería, Córdoba Colombia
| | - Dora I Ríos-Chaparro
- 1Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Carrera 24 # 63C - 69, Bogotá, Colombia
| | | | - Darío Pinilla
- Hospital Universitario Mayor-Méderi, Bogotá, Colombia
| | - Juan M Pardo
- Hospital Universitario Mayor-Méderi, Bogotá, Colombia
| | | | - Manuel A Patarroyo
- 4Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,8School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Juan D Ramírez
- 1Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Carrera 24 # 63C - 69, Bogotá, Colombia
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Díaz-Roa A, Espinoza-Culupú A, Torres-García O, Borges MM, Avino IN, Alves FL, Miranda A, Patarroyo MA, da Silva PI, Bello FJ. Sarconesin II, a New Antimicrobial Peptide Isolated from Sarconesiopsis magellanica Excretions and Secretions. Molecules 2019; 24:E2077. [PMID: 31159162 PMCID: PMC6600161 DOI: 10.3390/molecules24112077] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 04/11/2019] [Accepted: 04/20/2019] [Indexed: 01/13/2023] Open
Abstract
Antibiotic resistance is at dangerous levels and increasing worldwide. The search for new antimicrobial drugs to counteract this problem is a priority for health institutions and organizations, both globally and in individual countries. Sarconesiopsis magellanica blowfly larval excretions and secretions (ES) are an important source for isolating antimicrobial peptides (AMPs). This study aims to identify and characterize a new S. magellanica AMP. RP-HPLC was used to fractionate ES, using C18 columns, and their antimicrobial activity was evaluated. The peptide sequence of the fraction collected at 43.7 min was determined by mass spectrometry (MS). Fluorescence and electronic microscopy were used to evaluate the mechanism of action. Toxicity was tested on HeLa cells and human erythrocytes; physicochemical properties were evaluated. The molecule in the ES was characterized as sarconesin II and it showed activity against Gram-negative (Escherichia coli MG1655, Pseudomonas aeruginosa ATCC 27853, P. aeruginosa PA14) and Gram-positive (Staphylococcus aureus ATCC 29213, Micrococcus luteus A270) bacteria. The lowest minimum inhibitory concentration obtained was 1.9 μM for M. luteus A270; the AMP had no toxicity in any cells tested here and its action in bacterial membrane and DNA was confirmed. Sarconesin II was documented as a conserved domain of the ATP synthase protein belonging to the Fli-1 superfamily. The data reported here indicated that peptides could be alternative therapeutic candidates for use in infections against Gram-negative and Gram-positive bacteria and eventually as a new resource of compounds for combating multidrug-resistant bacteria.
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Affiliation(s)
- Andrea Díaz-Roa
- Special Laboratory for Applied Toxinology (LETA), Butantan Institute, São Paulo CEP 05503-900, SP, Brazil.
- Institute of Biomedical Sciences, University of São Paulo, São Paulo CEP 05508-900, SP, Brazil.
- PhD Program in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá 111221, Colombia.
| | - Abraham Espinoza-Culupú
- Institute of Biomedical Sciences, University of São Paulo, São Paulo CEP 05508-900, SP, Brazil.
- Bacteriology Laboratory, Butantan Institute, São Paulo CEP 05503-900, SP, Brazil.
| | | | - Monamaris M Borges
- Bacteriology Laboratory, Butantan Institute, São Paulo CEP 05503-900, SP, Brazil.
| | - Ivan N Avino
- Special Laboratory of Cell Cycle (LECC), Butantan Institute, São Paulo CEP 05503-900, SP, Brazil.
| | - Flávio L Alves
- Biophysics Department, UNIFESP, São Paulo CEP 04023-062, Brazil.
| | - Antonio Miranda
- Biophysics Department, UNIFESP, São Paulo CEP 04023-062, Brazil.
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá 111321, Colombia.
- Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá 112111, Colombia.
| | - Pedro I da Silva
- Special Laboratory for Applied Toxinology (LETA), Butantan Institute, São Paulo CEP 05503-900, SP, Brazil.
- Institute of Biomedical Sciences, University of São Paulo, São Paulo CEP 05508-900, SP, Brazil.
| | - Felio J Bello
- Faculty of Agricultural and Livestock Sciences, Veterinary Medicine Programme, Universidad de La Salle, Bogotá 110141, Colombia.
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Solano-Varela DM, Barrios-Vidales EM, Plaza DF, Riveros WM, Guzmán J, Chica CE, Patarroyo MA. Immunocompetent patient with a brain abscess caused by Nocardia beijingensis in Latin America: A case report. Medicine (Baltimore) 2019; 98:e14879. [PMID: 30882696 PMCID: PMC6426588 DOI: 10.1097/md.0000000000014879] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Nocardia species are not commonly referred as primary infectious entities but rather as opportunistic pathogens. Infectious cases of Nocardia spp. in immunocompetent individuals are rare. PATIENT CONCERNS An immunocompetent 58-year-old patient presented with recurrent headaches. DIAGNOSIS A brain abscess was found and surgically drained. Matrix-assisted laser desorption ionization-time-of-flight mass spectrometry and heat shock protein 65/16S-23S rRNA gene intergenic spacer genotyping from the sample revealed the etiological agent as Nocardia beijingensis. INTERVENTIONS Meropenem/amikacin/Trimethoprim-sulfamethoxazole were administered. OUTCOMES The infection persisted leading to the patient's death. LESSONS Here we present the first case of N. beijingensis infection of the central nervous system in an immunocompetent patient from Latin America. Further inquiry is needed to establish whether this species is more virulent than other Nocardia isolates.
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Affiliation(s)
| | | | - David F. Plaza
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC)
| | | | - Julián Guzmán
- Hospital Universitario Mayor Méderi, Universidad del Rosario
| | | | - Manuel A. Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC)
- Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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Ararat-Sarria M, Patarroyo MA, Curtidor H. Parasite-Related Genetic and Epigenetic Aspects and Host Factors Influencing Plasmodium falciparum Invasion of Erythrocytes. Front Cell Infect Microbiol 2019; 8:454. [PMID: 30693273 PMCID: PMC6339890 DOI: 10.3389/fcimb.2018.00454] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 12/21/2018] [Indexed: 01/13/2023] Open
Abstract
Malaria, a disease caused by Plasmodium parasites, is widespread throughout tropical and sub-tropical regions worldwide; it mostly affects children and pregnant woman. Eradication has stalled despite effective prevention measures and medication being available for this disease; this has mainly been due to the parasite's resistance to medical treatment and the mosquito vector's resistance to insecticides. Tackling such resistance involves using renewed approaches and techniques for accruing a deep understanding of the parasite's biology, and developing new drugs and vaccines. Studying the parasite's invasion of erythrocytes should shed light on its ability to switch between invasion phenotypes related to the expression of gene sets encoding proteins acting as ligands during target cell invasion, thereby conferring mechanisms for evading a particular host's immune response and adapting to changes in target cell surface receptors. This review considers some factors influencing the expression of such phenotypes, such as Plasmodium's genetic, transcriptional and epigenetic characteristics, and explores some host-related aspects which could affect parasite phenotypes, aiming at integrating knowledge regarding this topic and the possible relationship between the parasite's biology and host factors playing a role in erythrocyte invasion.
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Affiliation(s)
- Monica Ararat-Sarria
- Receptor-Ligand Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Hernando Curtidor
- Receptor-Ligand Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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Díaz-Roa A, Patarroyo MA, Bello FJ, Da Silva PI. Sarconesin: Sarconesiopsis magellanica Blowfly Larval Excretions and Secretions With Antibacterial Properties. Front Microbiol 2018; 9:2249. [PMID: 30323791 PMCID: PMC6172317 DOI: 10.3389/fmicb.2018.02249] [Citation(s) in RCA: 6] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/03/2018] [Indexed: 10/28/2022] Open
Abstract
Larval therapy (LT) is an alternative treatment for healing chronic wounds; its action is based on debridement, the removal of bacteria, and stimulating granulation tissue. The most important mechanism when using LT for combating infection depends on larval excretions and secretions (ES). Larvae are protected against infection by a spectrum of antimicrobial peptides (AMPs); special interest in AMPs has also risen regarding understanding their role in wound healing since they degrade necrotic tissue and kill different bacteria during LT. Sarconesiopsis magellanica (Diptera: Calliphoridae) is a promising medically-important necrophagous fly. This article reports a small AMP being isolated from S. magellanica ES products for the first time; these products were obtained from third-instar larvae taken from a previously-established colony. ES were fractionated by RP-HPLC using C18 columns for the first analysis; the products were then lyophilised and their antimicrobial activity was characterized by incubation with different bacterial strains. These fractions' primary sequences were determined by mass spectrometry and de novo sequencing; five AMPs were obtained, the Sarconesin fraction was characterized and antibacterial activity was tested in different concentrations with minimum inhibitory concentrations starting at 1.2 μM. Potent inhibitory activity was shown against Gram-negative (Escherichia coli D31, E. coli DH5α, Salmonella enterica ATCC 13314, Pseudomonas aeruginosa 27853) and Gram-positive (Staphylococcus aureus ATCC 29213, S. epidermidis ATCC 12228, Micrococcus luteus A270) bacteria. Sarconesin has a significant similarity with Rho-family GTPases which are important in organelle development, cytoskeletal dynamics, cell movement, and wound repair. The data reported here indicated that Sarconesin could be an alternative candidate for use in therapeutics against Gram-negative and Gram-positive bacterial infections. Our study describes one peptide responsible for antibacterial activity when LT is being used. The results shown here support carrying out further experiments aimed at validating S. magellanica AMPs as novel resources for combating antibacterial resistance.
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Affiliation(s)
- Andrea Díaz-Roa
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, Brazil.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia.,Biomedical Sciences Institute, Universidade de São Paulo, São Paulo, Brazil
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Felio J Bello
- Faculty of Agricultural and Livestock Sciences, Program of Veterinary Medicine, Universidad de La Salle, Bogotá, Colombia.,Medicine Faculty, Universidad Antonio Nariño, Bogotá, Colombia
| | - Pedro I Da Silva
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, Brazil.,Biomedical Sciences Institute, Universidade de São Paulo, São Paulo, Brazil
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Avendaño C, Jenkins M, Méndez-Callejas G, Oviedo J, Guzmán F, Patarroyo MA, Sánchez-Acedo C, Quílez J. Cryptosporidium spp. CP15 and CSL protein-derived synthetic peptides' immunogenicity and in vitro seroneutralisation capability. Vaccine 2018; 36:6703-6710. [PMID: 30268732 DOI: 10.1016/j.vaccine.2018.09.044] [Citation(s) in RCA: 5] [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: 07/11/2018] [Revised: 09/11/2018] [Accepted: 09/20/2018] [Indexed: 12/12/2022]
Abstract
Cryptosporidium spp. is a zoonotic intracellular protozoan and a significant cause of diarrhoea in humans and animals worldwide. This parasite can cause high morbidity in immunocompromised people and children in developing countries, livestock being the main reservoir. This study was aimed at performing preliminary tests on Swiss albino weaned mice (ICR) to evaluate the humoral immune response induced against peptides derived from Cryptosporidium parvum CP15 (15 kDa sporozoite surface antigen) and CSL (circumsporozoite-like antigen) proteins. Peptides were identified and characterised using bioinformatics tools and were chemically synthesised. The antibody response was determined and the neutralising effect of antibodies was measured in cell culture. Despite all peptides studied here were capable of stimulating antibody production, neutralising antibodies were detected for just two of the CP15-derived ones. Additional studies aimed at evaluating further the potential of such peptides as vaccine candidates are thus recommended.
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Affiliation(s)
- Catalina Avendaño
- Universidad de Ciencias Aplicadas y Ambientales U.D.C.A, Animal Sciences Faculty, Bogotá D.C., Colombia.
| | - Mark Jenkins
- Agricultural Research Service (ARS), USDA, Animal Parasitic Diseases Laboratory, Beltsville, USA
| | - Gina Méndez-Callejas
- Universidad de Ciencias Aplicadas y Ambientales U.D.C.A, Health Sciences Faculty, Bogotá D.C., Colombia
| | | | - Fanny Guzmán
- Pontificia Universidad Católica de Valparaiso, Núcleo de Biotecnología de Curauma (NBC), Valparaiso, Chile
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Molecular Biology and Immunology Department, Bogotá D.C., Colombia; Universidad del Rosario, School of Medicine and Health Sciences, Bogotá D.C., Colombia
| | - Caridad Sánchez-Acedo
- University of Zaragoza, Animal Pathology Department, Veterinary Sciences Faculty, Spain
| | - Joaquín Quílez
- University of Zaragoza, Animal Pathology Department, Veterinary Sciences Faculty, Spain
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Camargo-Ayala PA, Garzón-Ospina D, Moreno-Pérez DA, Ricaurte-Contreras LA, Noya O, Patarroyo MA. On the Evolution and Function of Plasmodium vivax Reticulocyte Binding Surface Antigen ( pvrbsa). Front Genet 2018; 9:372. [PMID: 30250483 PMCID: PMC6139305 DOI: 10.3389/fgene.2018.00372] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 05/25/2018] [Accepted: 08/23/2018] [Indexed: 12/28/2022] Open
Abstract
The RBSA protein is encoded by a gene described in Plasmodium species having tropism for reticulocytes. Since this protein is antigenic in natural infections and can bind to target cells, it has been proposed as a potential candidate for an anti-Plasmodium vivax vaccine. However, genetic diversity (a challenge which must be overcome for ensuring fully effective vaccine design) has not been described at this locus. Likewise, the minimum regions mediating specific parasite-host interaction have not been determined. This is why the rbsa gene’s evolutionary history is being here described, as well as the P. vivax rbsa (pvrbsa) genetic diversity and the specific regions mediating parasite adhesion to reticulocytes. Unlike what has previously been reported, rbsa was also present in several parasite species belonging to the monkey-malaria clade; paralogs were also found in Plasmodium parasites invading reticulocytes. The pvrbsa locus had less diversity than other merozoite surface proteins where natural selection and recombination were the main evolutionary forces involved in causing the observed polymorphism. The N-terminal end (PvRBSA-A) was conserved and under functional constraint; consequently, it was expressed as recombinant protein for binding assays. This protein fragment bound to reticulocytes whilst the C-terminus, included in recombinant PvRBSA-B (which was not under functional constraint), did not. Interestingly, two PvRBSA-A-derived peptides were able to inhibit protein binding to reticulocytes. Specific conserved and functionally important peptides within PvRBSA-A could thus be considered when designing a fully-effective vaccine against P. vivax.
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Affiliation(s)
- Paola Andrea Camargo-Ayala
- Department of Molecular Biology and Immunology, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,Microbiology Postgraduate Programme, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Diego Garzón-Ospina
- Department of Molecular Biology and Immunology, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Darwin Andrés Moreno-Pérez
- Department of Molecular Biology and Immunology, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,Livestock Sciences Faculty, Universidad de Ciencias Aplicadas y Ambientales, Bogotá, Colombia
| | | | - Oscar Noya
- Instituto de Medicina Tropical, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela
| | - Manuel A Patarroyo
- Department of Molecular Biology and Immunology, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia.,School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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Patiño LH, Camargo M, Muñoz M, Ríos-Chaparro DI, Patarroyo MA, Ramírez JD. Unveiling the Multilocus Sequence Typing (MLST) Schemes and Core Genome Phylogenies for Genotyping Chlamydia trachomatis. Front Microbiol 2018; 9:1854. [PMID: 30186244 PMCID: PMC6113918 DOI: 10.3389/fmicb.2018.01854] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 07/24/2018] [Indexed: 11/21/2022] Open
Abstract
Multilocus sequence typing (MLST) has become a useful tool for studying the genetic diversity of important public health pathogens, such as Chlamydia trachomatis (Ct). Four MLST schemes have been proposed for Ct (data available from Chlamydiales MLST databases). However, the lack of a sole standardized scheme represents the greatest limitation regarding typing this species. This study was thus aimed at evaluating the usefulness of the four MLST schemes available for Ct, describing each molecular marker's pattern and its contribution toward a description of intra-specific genetic diversity and population structure. The markers for each scheme, showed a variable power of dicrimination, exhibiting in some cases over estimation in the determination of Sequence Types (STs). However, individual analysis of each locus's typing efficiency and discrimination power led to identifying 8 markers as having a suitable pattern for intra-specific typing. analyzing the 8 candidate markers gave a combination of 3 of these loci as an optimal scheme for identifying a large amount of STs, maximizing discrimination power whilst maintaining suitable typing efficiency. One scheme was compared against core genome phylogenies, finding a higher typing resolution through the last approach. These results confirm once again that although complete genome data, in particular from core genome MLST (cgMLST) allow a high resolution clustering for Ct isolates. There are combinations of molecular markers that could generate equivalent results, with the advantage of representing an easy implementation strategy and lower costs leading to contribute to the monitoring and molecular epidemiology of Ct.
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Affiliation(s)
- Luz H. Patiño
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
- Ph.D. Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Milena Camargo
- Ph.D. Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
| | - Marina Muñoz
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Dora I. Ríos-Chaparro
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Manuel A. Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá, Colombia
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Juan D. Ramírez
- Grupo de Investigaciones Microbiológicas-UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
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López C, Yepes-Pérez Y, Díaz-Arévalo D, Patarroyo ME, Patarroyo MA. The in Vitro Antigenicity of Plasmodium vivax Rhoptry Neck Protein 2 ( PvRON2) B- and T-Epitopes Selected by HLA-DRB1 Binding Profile. Front Cell Infect Microbiol 2018; 8:156. [PMID: 29868512 PMCID: PMC5962679 DOI: 10.3389/fcimb.2018.00156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 12/18/2017] [Accepted: 04/24/2018] [Indexed: 12/13/2022] Open
Abstract
Malaria caused by Plasmodium vivax is a neglected disease which is responsible for the highest morbidity in both Americas and Asia. Despite continuous public health efforts to prevent malarial infection, an effective antimalarial vaccine is still urgently needed. P. vivax vaccine development involves analyzing naturally-infected patients' immune response to the specific proteins involved in red blood cell invasion. The P. vivax rhoptry neck protein 2 (PvRON2) is a highly conserved protein which is expressed in late schizont rhoptries; it interacts directly with AMA-1 and might be involved in moving-junction formation. Bioinformatics approaches were used here to select B- and T-cell epitopes. Eleven high-affinity binding peptides were selected using the NetMHCIIpan-3.0 in silico prediction tool; their in vitro binding to HLA-DRB1*0401, HLA-DRB1*0701, HLA-DRB1*1101 or HLA-DRB1*1302 was experimentally assessed. Four peptides (39152 (HLA-DRB1*04 and 11), 39047 (HLA-DRB1*07), 39154 (HLADRB1*13) and universal peptide 39153) evoked a naturally-acquired T-cell immune response in P. vivax-exposed individuals from two endemic areas in Colombia. All four peptides had an SI greater than 2 in proliferation assays; however, only peptides 39154 and 39153 had significant differences compared to the control group. Peptide 39047 was able to significantly stimulate TNF and IL-10 production while 39154 stimulated TNF production. Allele-specific peptides (but not the universal one) were able to stimulate IL-6 production; however, none induced IFN-γ production. The Bepipred 1.0 tool was used for selecting four B-cell epitopes in silico regarding humoral response. Peptide 39041 was the only one recognized by P. vivax-exposed individuals' sera and had significant differences concerning IgG subclasses; an IgG2 > IgG4 profile was observed for this peptide, agreeing with a protection-inducing role against P. falciparum and P. vivax as previously described for antigens such as RESA and MSP2. The bioinformatics results and in vitro evaluation reported here highlighted two T-cell epitopes (39047 and 39154) being recognized by memory cells and a B-cell epitope (39041) identified by P. vivax-exposed individuals' sera which could be used as potential candidates when designing a subunit-based vaccine.
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Affiliation(s)
- Carolina López
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,PhD Program in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Yoelis Yepes-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,MSc Program in Microbiology, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Diana Díaz-Arévalo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Faculty of Agricultural Sciences, Universidad de Ciencias Aplicadas y Ambientales, Bogotá, Colombia
| | - Manuel E Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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Bermudez A, Alba MP, Vanegas M, Patarroyo MA, Patarroyo ME. Specific β-Turns Precede PPII L Structures Binding to Allele-Specific HLA-DRβ1 * PBRs in Fully-Protective Malaria Vaccine Components. Front Chem 2018; 6:106. [PMID: 29682500 PMCID: PMC5898157 DOI: 10.3389/fchem.2018.00106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 12/22/2017] [Accepted: 03/22/2018] [Indexed: 01/18/2023] Open
Abstract
The 3D structural analysis of 62 peptides derived from highly pathogenic Plasmodium falciparum malaria parasite proteins involved in host cell invasion led to finding a striking association between particular β-turn types located in the N-terminal peripheral flanking residue region (preceding the polyproline II left-handed structures fitting into the HLA-DRβ* allele family) and modified immune protection-inducing protein structure induced long-lasting protective immunity. This is the first time association between two different secondary structures associated with a specific immunological function has been described: full, long-lasting protective immunity.
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Affiliation(s)
- Adriana Bermudez
- 3D Structure Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,School of Medicine and Health Sciences Faculty, Universidad del Rosario, Bogotá, Colombia
| | - Martha P Alba
- 3D Structure Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Medicine Faculty, Universidad de Ciencias Aplicadas y Ambientales, Bogotá, Colombia
| | - Magnolia Vanegas
- 3D Structure Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,School of Medicine and Health Sciences Faculty, Universidad del Rosario, Bogotá, Colombia
| | - Manuel A Patarroyo
- 3D Structure Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,School of Medicine and Health Sciences Faculty, Universidad del Rosario, Bogotá, Colombia
| | - Manuel E Patarroyo
- 3D Structure Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Medicine Faculty, Universidad Nacional de Colombia, Bogotá, Colombia
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Muñoz M, Ríos-Chaparro DI, Herrera G, Soto-De Leon SC, Birchenall C, Pinilla D, Pardo-Oviedo JM, Josa DF, Patarroyo MA, Ramírez JD. New Insights into Clostridium difficile (CD) Infection in Latin America: Novel Description of Toxigenic Profiles of Diarrhea-Associated to CD in Bogotá, Colombia. Front Microbiol 2018; 9:74. [PMID: 29441053 PMCID: PMC5797639 DOI: 10.3389/fmicb.2018.00074] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 09/05/2017] [Accepted: 01/11/2018] [Indexed: 12/18/2022] Open
Abstract
Clostridium difficile (CD) produces antibiotic associated diarrhea and leads to a broad range of diseases. The source of CD infection (CDI) acquisition and toxigenic profile are factors determining the impact of CD. This study aimed at detecting healthcare facility onset- (HCFO) and community-onset (CO) CDI and describing their toxigenic profiles in Bogotá, Colombia. A total of 217 fecal samples from patients suffering diarrhea were simultaneously submitted to two CDI detection strategies: (i) in vitro culture using selective chromogenic medium (SCM; chromID, bioMérieux), followed verification by colony screening (VCS), and (ii) molecular detection targeting constitutive genes, using two conventional PCR tests (conv.PCR) (conv.16S y conv.gdh) and a quantitative test (qPCR.16s). The CD toxigenic profile identified by any molecular test was described using 6 tests independently for describing PaLoc and CdtLoc organization. High overall CDI frequencies were found by both SCM (52.1%) and conv.PCR (45.6% for conv.16S and 42.4% for conv.gdh), compared to reductions of up to half the frequency by VCS (27.2%) or qPCR.16S (22.6%). Infection frequencies were higher for SCM and conv.16S regarding HCFO but greater for CO concerning conv.gdh, such differences being statistically significant. Heterogeneous toxigenic profiles were found, including amplification with lok1/3 primers simultaneously with other PaLoc markers (tcdA, tcdB or tcdC). These findings correspond the first report regarding the differential detection of CDI using in vitro culture and molecular detection tests in Colombia, the circulation of CD having heterogeneous toxigenic profiles and molecular arrays which could affect the impact of CDI epidemiology.
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Affiliation(s)
- Marina Muñoz
- Universidad del Rosario, Facultad de Ciencias Naturales y Matemáticas, Programa de Biología, Grupo de Investigaciones Microbiológicas-UR (GIMUR), Bogotá, Colombia.,Posgrado Interfacultades Doctorado en Biotecnología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Dora I Ríos-Chaparro
- Universidad del Rosario, Facultad de Ciencias Naturales y Matemáticas, Programa de Biología, Grupo de Investigaciones Microbiológicas-UR (GIMUR), Bogotá, Colombia
| | - Giovanny Herrera
- Universidad del Rosario, Facultad de Ciencias Naturales y Matemáticas, Programa de Biología, Grupo de Investigaciones Microbiológicas-UR (GIMUR), Bogotá, Colombia
| | - Sara C Soto-De Leon
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia
| | | | - Darío Pinilla
- Hospital Universitario Mayor-Méderi, Bogotá, Colombia
| | | | | | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Universidad del Rosario, School of Medicine and Health Sciences, Bogotá, Colombia
| | - Juan D Ramírez
- Universidad del Rosario, Facultad de Ciencias Naturales y Matemáticas, Programa de Biología, Grupo de Investigaciones Microbiológicas-UR (GIMUR), Bogotá, Colombia
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Garzón-Ospina D, Buitrago SP, Ramos AE, Patarroyo MA. Identifying Potential Plasmodium vivax Sporozoite Stage Vaccine Candidates: An Analysis of Genetic Diversity and Natural Selection. Front Genet 2018; 9:10. [PMID: 29422913 PMCID: PMC5788960 DOI: 10.3389/fgene.2018.00010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 10/24/2017] [Accepted: 01/09/2018] [Indexed: 11/30/2022] Open
Abstract
Parasite antigen genetic diversity represents a great obstacle when designing a vaccine against malaria caused by Plasmodium vivax. Selecting vaccine candidate antigens has been focused on those fulfilling a role in invasion and which are conserved, thus avoiding specific-allele immune responses. Most antigens described to date belong to the blood stage, thereby blocking parasite development within red blood cells, whilst studying antigens from other stages has been quite restricted. Antigens from different parasite stages are required for developing a completely effective vaccine; thus, pre-erythrocyte stage antigens able to block the first line of infection becoming established should also be taken into account. However, few antigens from this stage have been studied to date. Several P. falciparum sporozoite antigens are involved in invasion. Since 77% of genes are orthologous amongst Plasmodium parasites, P. vivax sporozoite antigen orthologs to those of P. falciparum might be present in its genome. Although these genes might have high genetic diversity, conserved functionally-relevant regions (ideal for vaccine development) could be predicted by comparing genetic diversity patterns and evolutionary rates. This study was thus aimed at searching for putative P. vivax sporozoite genes so as to analyse their genetic diversity for determining their potential as vaccine candidates. Several DNA sequence polymorphism estimators were computed at each locus. The evolutionary force (drift, selection and recombination) drawing the genetic diversity pattern observed was also determined by using tests based on polymorphism frequency spectrum as well as the type of intra- and inter-species substitutions. Likewise, recombination was assessed both indirectly and directly. The results showed that sporozoite genes were more conserved than merozoite genes evaluated to date. Putative domains implied in cell traversal, gliding motility and hepatocyte interaction had a negative selection signal, being conserved amongst different species in the genus. PvP52, PvP36, PvSPATR, PvPLP1, PvMCP1, PvTLP, PvCelTOS, and PvMB2 antigens or functionally restricted regions within them would thus seem promising vaccine candidates and could be used when designing a pre-erythrocyte and/or multi-stage vaccine against P. vivax to avoid allele-specific immune responses that could reduce vaccine efficacy.
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Affiliation(s)
- Diego Garzón-Ospina
- Molecular Biology and Immunology Laboratory, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,PhD Programme in Biomedical and Biological Sciences, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Sindy P Buitrago
- Molecular Biology and Immunology Laboratory, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia
| | - Andrea E Ramos
- Molecular Biology and Immunology Laboratory, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Laboratory, Fundación Instituto de Inmunología de Colombia, Bogotá, Colombia.,Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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Abstract
DNA cloning is an essential tool regarding DNA recombinant technology as it allows the replication of foreign DNA fragments within a cell. pELMO was here constructed as an in-house cloning vector for rapid and low-cost PCR product propagation; it is an optimally designed vector containing the ccdB killer gene from the pDONR 221 plasmid, cloned into the pUC18 vector’s multiple cloning site (Thermo Scientific). The ccdB killer gene has a cleavage site (CCC/GGG) for the SmaI restriction enzyme which is used for vector linearisation and cloning blunt-ended products. pELMO transformation efficiency was evaluated with different sized inserts and its cloning efficiency was compared to that of the pGEM-T Easy commercial vector. The highest pELMO transformation efficiency was observed for ~500 bp DNA fragments; pELMO vector had higher cloning efficiency for all insert sizes tested. In-house and commercial vector cloned insert reads after sequencing were similar thus highlighting that sequencing primers were designed and localised appropriately. pELMO is thus proposed as a practical alternative for in-house cloning of PCR products in molecular biology laboratories.
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Baquero LA, Moreno-Pérez DA, Garzón-Ospina D, Forero-Rodríguez J, Ortiz-Suárez HD, Patarroyo MA. PvGAMA reticulocyte binding activity: predicting conserved functional regions by natural selection analysis. Parasit Vectors 2017; 10:251. [PMID: 28526096 PMCID: PMC5438544 DOI: 10.1186/s13071-017-2183-8] [Citation(s) in RCA: 20] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 05/10/2017] [Indexed: 12/11/2022] Open
Abstract
Background Adhesin proteins are used by Plasmodium parasites to bind and invade target cells. Hence, characterising molecules that participate in reticulocyte interaction is key to understanding the molecular basis of Plasmodium vivax invasion. This study focused on predicting functionally restricted regions of the P. vivax GPI-anchored micronemal antigen (PvGAMA) and characterising their reticulocyte binding activity. Results The pvgama gene was initially found in P. vivax VCG-I strain schizonts. According to the genetic diversity analysis, PvGAMA displayed a size polymorphism very common for antigenic P. vivax proteins. Two regions along the antigen sequence were highly conserved among species, having a negative natural selection signal. Interestingly, these regions revealed a functional role regarding preferential target cell adhesion. Conclusions To our knowledge, this study describes PvGAMA reticulocyte binding properties for the first time. Conserved functional regions were predicted according to natural selection analysis and their binding ability was confirmed. These findings support the notion that PvGAMA may have an important role in P. vivax merozoite adhesion to its target cells. Electronic supplementary material The online version of this article (doi:10.1186/s13071-017-2183-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Luis A Baquero
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá DC, Colombia
| | - Darwin A Moreno-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá DC, Colombia.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Carrera 24 No. 63C-69, Bogotá DC, Colombia
| | - Diego Garzón-Ospina
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá DC, Colombia.,PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Carrera 24 No. 63C-69, Bogotá DC, Colombia
| | - Johanna Forero-Rodríguez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá DC, Colombia
| | - Heidy D Ortiz-Suárez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá DC, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá DC, Colombia. .,Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24 No. 63C-69, Bogotá DC, Colombia.
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Moreno-Pérez DA, Baquero LA, Chitiva-Ardila DM, Patarroyo MA. Characterising PvRBSA: an exclusive protein from Plasmodium species infecting reticulocytes. Parasit Vectors 2017; 10:243. [PMID: 28521840 PMCID: PMC5437689 DOI: 10.1186/s13071-017-2185-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 12/15/2016] [Accepted: 05/10/2017] [Indexed: 11/30/2022] Open
Abstract
Background Plasmodium vivax uses multiple ligand-receptor interactions for preferential invasion of human reticulocytes. Several of these ligands have been identified by in silico approaches based on the role displayed by their orthologs in other Plasmodium species during initial adhesion or invasion. However, the cell adhesion role of proteins that are exclusive to species that specifically invade reticulocytes (as P. vivax and P. cynomolgi) has not been evaluated to date. This study aimed to characterise an antigen shared between Plasmodium species that preferentially infect reticulocytes with a focus on assessing its binding activity to target cells. Results An in silico analysis was performed using P. vivax proteome data to identify and characterise one antigen shared between P. vivax and P. cynomolgi. This led to identification of the pvrbsa gene present in the P. vivax VCG-I strain genome. This gene is transcribed in mature schizonts and encodes a protein located on the parasite surface. rPvRBSA was antigenic and capable of binding to a population of reticulocytes with a different Duffy phenotype. Interestingly, the molecule showed a higher percentage of binding to immature human reticulocytes (CD71hi). Conclusions This study describes for the first time, a molecule involved in host cell binding that is exclusive in reticulocyte-infecting Plasmodium species. This suggest that PvRBSA is an antigenic adhesin that plays a role in parasite binding to target cells. Electronic supplementary material The online version of this article (doi:10.1186/s13071-017-2185-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Darwin A Moreno-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá, D.C., Colombia.,Programme in Biomedical and Biological Sciences, Universidad del Rosario, Carrera 24 No. 63C-69, Bogotá, D.C., Colombia
| | - Luis A Baquero
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá, D.C., Colombia
| | - Diana M Chitiva-Ardila
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá, D.C., Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Carrera 50 No. 26-20, Bogotá, D.C., Colombia. .,Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24 No. 63C-69, Bogotá, D.C., Colombia.
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Díaz DP, Ocampo M, Varela Y, Curtidor H, Patarroyo MA, Patarroyo ME. Identifying and characterising PPE7 (Rv0354c) high activity binding peptides and their role in inhibiting cell invasion. Mol Cell Biochem 2017; 430:149-160. [PMID: 28205097 DOI: 10.1007/s11010-017-2962-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 10/27/2016] [Accepted: 01/28/2017] [Indexed: 10/20/2022]
Abstract
This study was aimed at characterising the PPE7 protein from the PE/PPE protein family. The presence and transcription of the rv0354c gene in the Mycobacterium tuberculosis complex was determined and the subcellular localisation of the PPE7 protein on mycobacterial membrane was confirmed by immunoelectron microscope. Two peptides were identified as having high binding activity (HABPs) and were tested in vitro regarding the invasion of Mycobacterium tuberculosis H37Rv. HABP 39224 inhibited invasion in A549 epithelial cells and U937 macrophages by more than 50%, whilst HABP 39225 inhibited invasion by 40% in U937 cells. HABP 39224, located in the protein's C-terminal region, has a completely conserved amino acid sequence in M. tuberculosis complex species and could be selected as a base peptide when designing a subunit-based, anti-tuberculosis vaccine.
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Affiliation(s)
- Diana P Díaz
- Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá, Colombia.,Universidad del Rosario, 111321, Bogotá, Colombia
| | - Marisol Ocampo
- Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá, Colombia. .,Universidad del Rosario, 111321, Bogotá, Colombia.
| | - Yahson Varela
- Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá, Colombia.,Universidad del Rosario, 111321, Bogotá, Colombia
| | - Hernando Curtidor
- Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá, Colombia.,Universidad del Rosario, 111321, Bogotá, Colombia
| | - Manuel A Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá, Colombia.,Universidad del Rosario, 111321, Bogotá, Colombia
| | - Manuel E Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), 111321, Bogotá, Colombia.,Universidad Nacional de Colombia, 11001, Bogotá, Colombia
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López C, Yepes-Pérez Y, Hincapié-Escobar N, Díaz-Arévalo D, Patarroyo MA. What Is Known about the Immune Response Induced by Plasmodium vivax Malaria Vaccine Candidates? Front Immunol 2017; 8:126. [PMID: 28243235 PMCID: PMC5304258 DOI: 10.3389/fimmu.2017.00126] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 11/05/2016] [Accepted: 01/25/2017] [Indexed: 12/15/2022] Open
Abstract
Malaria caused by Plasmodium vivax continues being one of the most important infectious diseases around the world; P. vivax is the second most prevalent species and has the greatest geographic distribution. Developing an effective antimalarial vaccine is considered a relevant control strategy in the search for means of preventing the disease. Studying parasite-expressed proteins, which are essential in host cell invasion, has led to identifying the regions recognized by individuals who are naturally exposed to infection. Furthermore, immunogenicity studies have revealed that such regions can trigger a robust immune response that can inhibit sporozoite (hepatic stage) or merozoite (erythrocyte stage) invasion of a host cell and induce protection. This review provides a synthesis of the most important studies to date concerning the antigenicity and immunogenicity of both synthetic peptide and recombinant protein candidates for a vaccine against malaria produced by P. vivax.
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Affiliation(s)
- Carolina López
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; PhD Programme in Biomedical and Biological Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Yoelis Yepes-Pérez
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; MSc Programme in Microbiology, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Natalia Hincapié-Escobar
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC) , Bogotá , Colombia
| | - Diana Díaz-Arévalo
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; Universidad de Ciencias Aplicadas y Ambientales (UDCA), Bogotá, Colombia
| | - Manuel A Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Immunología de Colombia (FIDIC), Bogotá, Colombia; Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
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Patarroyo ME, Aza-Conde J, Moreno-Vranich A, Pabón L, Varela Y, Patarroyo MA. Far from the Madding Crowd: the Molecular Basis for Immunological Escape ofPlasmodium falciparum. Curr Issues Mol Biol 2017; 22:65-78. [DOI: 10.21775/cimb.022.065] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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