1
|
Infante Cruz A, Coronel JV, Saibene Vélez P, Remes Lenicov F, Iturrizaga J, Abelleyro M, Rosato M, Shiromizu CM, Candolfi M, Vermeulen M, Jancic C, Yasuda E, Berner S, Villaverde MS, Salamone GV. Correction: Relevance of Thymic Stromal Lymphopoietin on the Pathogenesis of Glioblastoma: Role of the Neutrophil. Cell Mol Neurobiol 2024; 44:37. [PMID: 38647721 PMCID: PMC11035384 DOI: 10.1007/s10571-024-01479-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Affiliation(s)
- Alejandra Infante Cruz
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Juan Valentin Coronel
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Paula Saibene Vélez
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires - CONICET, Paraguay 2155, Buenos Aires, Argentina
| | - Juan Iturrizaga
- División Neurocirugía, Instituto de Investigaciones Médicas A Lanari, Universidad de Buenos Aires, Av. Combatientes de Malvinas 3150, Buenos Aires, Argentina
| | - Martín Abelleyro
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Micaela Rosato
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carolina Maiumi Shiromizu
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Marianela Candolfi
- Instituto de Investigaciones Biomédicas (INBIOMED UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mónica Vermeulen
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Carolina Jancic
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
- Departamento de Microbiología, Parasitología e Inmunología, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ezequiel Yasuda
- Hospital de Clínicas José de San Martín, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Silvia Berner
- Servicio de Neurocirugía de la Clínica y Maternidad Santa Isabel, Buenos Aires, Argentina
| | - Marcela Solange Villaverde
- Unidad de Transferencia Genética, Área Investigación, Instituto de Oncología Ángel H. Roffo, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Gabriela Verónica Salamone
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina.
- Departamento de Microbiología, Parasitología e Inmunología, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina.
| |
Collapse
|
2
|
Infante Cruz A, Coronel JV, Saibene Vélez P, Remes Lenicov F, Iturrizaga J, Abelleyro M, Rosato M, Shiromizu CM, Candolfi M, Vermeulen M, Jancic C, Yasuda E, Berner S, Villaverde MS, Salamone GV. Relevance of Thymic Stromal Lymphopoietin on the Pathogenesis of Glioblastoma: Role of the Neutrophil. Cell Mol Neurobiol 2024; 44:31. [PMID: 38557942 PMCID: PMC10984908 DOI: 10.1007/s10571-024-01462-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 02/14/2024] [Indexed: 04/04/2024]
Abstract
Glioblastoma multiforme (GBM) is the most predominant and malignant primary brain tumor in adults. Thymic stromal lymphopoietin (TSLP), a cytokine primarily generated by activated epithelial cells, has recently garnered attention in cancer research. This study was aimed to elucidate the significance of TSLP in GBM cells and its interplay with the immune system, particularly focused on granulocyte neutrophils. Our results demonstrate that the tumor produces TSLP when stimulated with epidermal growth factor (EGF) in both the U251 cell line and the GBM biopsy (GBM-b). The relevance of the TSLP function was evaluated using a 3D spheroid model. Spheroids exhibited increased diameter, volume, and proliferation. In addition, TSLP promoted the generation of satellites surrounding the main spheroids and inhibited apoptosis in U251 treated with temozolomide (TMZ). Additionally, the co-culture of polymorphonuclear (PMN) cells from healthy donors with the U251 cell line in the presence of TSLP showed a reduction in apoptosis and an increase in IL-8 production. TSLP directly inhibited apoptosis in PMN from GBM patients (PMN-p). Interestingly, the vascular endothelial growth factor (VEGF) production was elevated in PMN-p compared with PMN from healthy donors. Under these conditions, TSLP also increased VEGF production, in PMN from healthy donors. Moreover, TSLP upregulated programed death-ligand 1 (PDL-1) expression in PMN cultured with U251. On the other hand, according to our results, the analysis of RNA-seq datasets from Illumina HiSeq 2000 sequencing platform performed with TIMER2.0 webserver demonstrated that the combination of TSLP with neutrophils decreases the survival of the patient. In conclusion, our results position TSLP as a possible new growth factor in GBM and indicate its modulation of the tumor microenvironment, particularly through its interaction with PMN.
Collapse
Affiliation(s)
- Alejandra Infante Cruz
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Juan Valentin Coronel
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Paula Saibene Vélez
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires - CONICET, Paraguay 2155, Buenos Aires, Argentina
| | - Juan Iturrizaga
- División Neurocirugía, Instituto de Investigaciones Médicas A Lanari, Universidad de Buenos Aires, Av. Combatientes de Malvinas 3150, Buenos Aires, Argentina
| | - Martín Abelleyro
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Micaela Rosato
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carolina Maiumi Shiromizu
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Marianela Candolfi
- Instituto de Investigaciones Biomédicas (INBIOMED UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mónica Vermeulen
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
| | - Carolina Jancic
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina
- Departamento de Microbiología, Parasitología e Inmunología, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ezequiel Yasuda
- Hospital de Clínicas José de San Martín, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Silvia Berner
- Servicio de Neurocirugía de la Clínica y Maternidad Santa Isabel, Buenos Aires, Argentina
| | - Marcela Solange Villaverde
- Unidad de Transferencia Genética, Área Investigación, Instituto de Oncología Ángel H. Roffo, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Gabriela Verónica Salamone
- Instituto de Medicina Experimental (IMEX-CONICET), Academia Nacional de Medicina, Pacheco de Melo 3081, 1425, Buenos Aires, Argentina.
- Departamento de Microbiología, Parasitología e Inmunología, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina.
| |
Collapse
|
3
|
Remes Lenicov F, Fink NE. Ethical issues in the use of leftover samples and associated personal data obtained from diagnostic laboratories. Clin Chim Acta 2023; 548:117442. [PMID: 37308048 PMCID: PMC10257511 DOI: 10.1016/j.cca.2023.117442] [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: 02/24/2023] [Revised: 05/30/2023] [Accepted: 06/09/2023] [Indexed: 06/14/2023]
Abstract
Diagnostic laboratories are an integral part of the research ecosystem in biomedical sciences. Among other roles, laboratories are a source of clinically-characterized samples for research or diagnostic validation studies. Particularly during the COVID-19 pandemic, this process was entered by laboratories with different experience in the ethical management of human samples. The objective of this document is to present the current ethical framework regarding the use of leftover samples in clinical laboratories. Leftover samples are defined as the residue of a sample that has been obtained and used for clinical purposes, and would otherwise be discarded. Secondary use of samples typically demands institutional ethical oversight and informed consent by the participants, although the latter requirement could be exempted when the harm risks are sufficiently small. However, ongoing discussions have proposed that minimal risk is an insufficient argument to allow the use of samples without consent. In this article, we discuss both positions, to finally suggest that laboratories anticipating the secondary use of samples should consider the adoption of broad informed consent, or even the implementation of organized biobanking, in order to achieve higher standards of ethical compliance which would enhance their capacity to fulfill their role in the production of knowledge.
Collapse
Affiliation(s)
- Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires / CONICET, Buenos Aires, Argentina.
| | - Nilda E Fink
- Fundación Bioquímica Argentina, La Plata, Argentina.
| |
Collapse
|
4
|
Adamczyk AM, Leicaj ML, Fabiano MP, Cabrerizo G, Bannoud N, Croci DO, Witwer KW, Remes Lenicov F, Ostrowski M, Pérez PS. Extracellular vesicles from human plasma dampen inflammation and promote tissue repair functions in macrophages. J Extracell Vesicles 2023; 12:e12331. [PMID: 37272889 DOI: 10.1002/jev2.12331] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 04/14/2023] [Accepted: 05/04/2023] [Indexed: 06/06/2023] Open
Abstract
Although inflammation is a vital defence response to infection, if left uncontrolled, it can lead to pathology. Macrophages are critical players both in driving the inflammatory response and in the subsequent events required for restoring tissue homeostasis. Extracellular vesicles (EVs) are membrane-enclosed structures released by cells that mediate intercellular communication and are present in all biological fluids, including blood. Herein, we show that extracellular vesicles from plasma (pEVs) play a relevant role in the control of inflammation by counteracting PAMP-induced macrophage activation. Indeed, pEV-treatment of macrophages simultaneously with or prior to PAMP exposure reduced the secretion of pro-inflammatory IL-6 and TNF-α and increased IL-10 response. This anti-inflammatory activity was associated with the promotion of tissue-repair functions in macrophages, characterized by augmented efferocytosis and pro-angiogenic capacity, and increased expression of VEGFa, CD300e, RGS2 and CD93, genes involved in cell growth and tissue remodelling. We also show that simultaneous stimulation of macrophages with a PAMP and pEVs promoted COX2 expression and CREB phosphorylation as well as the accumulation of higher concentrations of PGE2 in cell culture supernatants. Remarkably, the anti-inflammatory activity of pEVs was abolished if cells were treated with a pharmacological inhibitor of COX2, indicating that pEV-mediated induction of COX2 is critical for the pEV-mediated inhibition of inflammation. Finally, we show that pEVs added to monocytes prior to their M-CSF-induced differentiation to macrophages increased efferocytosis and diminished pro-inflammatory cytokine responses to PAMP stimulation. In conclusion, our results suggest that pEVs are endogenous homeostatic modulators of macrophages, activating the PGE2/CREB pathway, decreasing the production of inflammatory cytokines and promoting tissue repair functions.
Collapse
Affiliation(s)
- Alan M Adamczyk
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - María Luz Leicaj
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Martina Paula Fabiano
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Gonzalo Cabrerizo
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Nadia Bannoud
- Laboratorio de Glicobiología y Biología Vascular, Instituto de Histología y Embriología de Mendoza, CONICET-Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Diego O Croci
- Laboratorio de Glicobiología y Biología Vascular, Instituto de Histología y Embriología de Mendoza, CONICET-Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Kenneth W Witwer
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Matías Ostrowski
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| | - Paula Soledad Pérez
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
| |
Collapse
|
5
|
Maffia-Bizzozero S, Cevallos C, Lenicov FR, Freiberger RN, Lopez CAM, Guano Toaquiza A, Sviercz F, Jarmoluk P, Bustos C, D’Addario AC, Quarleri J, Delpino MV. Viable SARS-CoV-2 Omicron sub-variants isolated from autopsy tissues. Front Microbiol 2023; 14:1192832. [PMID: 37283920 PMCID: PMC10240073 DOI: 10.3389/fmicb.2023.1192832] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/08/2023] [Indexed: 06/08/2023] Open
Abstract
Introduction Pulmonary and extrapulmonary manifestations have been described after infection with SARS-CoV-2, the causative agent of coronavirus disease 2019 (COVID-19). The virus is known to persist in multiple organs due to its tropism for several tissues. However, previous reports were unable to provide definitive information about whether the virus is viable and transmissible. It has been hypothesized that the persisting reservoirs of SARS-CoV-2 in tissues could be one of the multiple potentially overlapping causes of long COVID. Methods In the present study, we investigated autopsy materials obtained from 21 cadaveric donors with documented first infection or reinfection at the time of death. The cases studied included recipients of different formulations of COVID-19 vaccines. The aim was to find the presence of SARS-CoV-2 in the lungs, heart, liver, kidneys, and intestines. We used two technical approaches: the detection and quantification of viral genomic RNA using RT-qPCR, and virus infectivity using permissive in vitro Vero E6 culture. Results All tissues analyzed showed the presence of SARS-CoV-2 genomic RNA but at dissimilar levels ranging from 1.01 × 102 copies/mL to 1.14 × 108 copies/mL, even among those cases who had been COVID-19 vaccinated. Importantly, different amounts of replication-competent virus were detected in the culture media from the studied tissues. The highest viral load were measured in the lung (≈1.4 × 106 copies/mL) and heart (≈1.9 × 106 copies/mL) samples. Additionally, based on partial Spike gene sequences, SARS-CoV-2 characterization revealed the presence of multiple Omicron sub-variants exhibiting a high level of nucleotide and amino acid identity among them. Discussion These findings highlight that SARS-CoV-2 can spread to multiple tissue locations such as the lungs, heart, liver, kidneys, and intestines, both after primary infection and after reinfections with the Omicron variant, contributing to extending knowledge about the pathogenesis of acute infection and understanding the sequelae of clinical manifestations that are observed during post-acute COVID-19.
Collapse
Affiliation(s)
| | - Cintia Cevallos
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Rosa Nicole Freiberger
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Cinthya Alicia Marcela Lopez
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Alex Guano Toaquiza
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Franco Sviercz
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Patricio Jarmoluk
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | | | | | - Jorge Quarleri
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - M. Victoria Delpino
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida (INBIRS), Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| |
Collapse
|
6
|
Di Diego Garcia F, Cabrerizo G, Paletta A, Prez PS, Varese A, Geffner J, Bello N, Fridman V, Stecher D, Ceballos A, Remes Lenicov F. Resistance to Prostaglandin E2 Promotes Monocyte Activation During Chronic HIV Infection. J Infect Dis 2023; 227:423-433. [PMID: 36482781 DOI: 10.1093/infdis/jiac480] [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: 08/25/2022] [Revised: 11/28/2022] [Accepted: 12/07/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Monocyte activation is a driver of inflammation in the course of chronic HIV infection. Prostaglandin E2 (PGE2) is known to mediate anti-inflammatory effects, notably the inhibition of tumor necrosis factor- (TNF-) production by monocytes. We aim to investigate the effects of PGE2 on activation of monocytes in chronic HIV infection and the mechanisms through which PGE2 modulates their inflammatory signature. METHODS We recruited a group of people with HIV (PWH) and matched healthy uninfected persons. We compared plasma levels of PGE2, monocyte activation, and sensitivity of monocytes to the inhibitory actions mediated by PGE2. RESULTS We found increased plasma levels of PGE2 in PWH, and an activated phenotype in circulating monocytes, compared with uninfected individuals. Monocytes from PWH showed a significant resistance to the inhibitory actions mediated by PGE2; the concentration of PGE2 able to inhibit 50 of the production of TNF- by lipopolysaccharide-stimulated monocytes was 10 times higher in PWH compared with uninfected controls. Furthermore, the expression of phosphodiesterase 4B, a negative regulator of PGE2 activity, was significantly increased in monocytes from PWH. CONCLUSIONS Resistance to the inhibitory actions mediated by PGE2 could account, at least in part, for the inflammatory profile of circulating monocytes in PWH.
Collapse
Affiliation(s)
- Facundo Di Diego Garcia
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Gonzalo Cabrerizo
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Ana Paletta
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Paula S Prez
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Augusto Varese
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Jorge Geffner
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Natalia Bello
- Divisin Infectologa, Hospital de Clnicas Jos de San Martn, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Vanesa Fridman
- Divisin Infectologa, Hospital de Clnicas Jos de San Martn, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Daniel Stecher
- Divisin Infectologa, Hospital de Clnicas Jos de San Martn, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana Ceballos
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomdicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Buenos Aires, Argentina
| |
Collapse
|
7
|
Molina-Mora JA, Reales-González J, Camacho E, Duarte-Martínez F, Tsukayama P, Soto-Garita C, Brenes H, Cordero-Laurent E, Ribeiro dos Santos A, Guedes Salgado C, Santos Silva C, Santana de Souza J, Nunes G, Negri T, Vidal A, Oliveira R, Oliveira G, Muñoz-Medina JE, Salas-Lais AG, Mireles-Rivera G, Sosa E, Turjanski A, Monzani MC, Carobene MG, Remes Lenicov F, Schottlender G, Fernández Do Porto DA, Kreuze JF, Sacristán L, Guevara-Suarez M, Cristancho M, Campos-Sánchez R, Herrera-Estrella A. Overview of the SARS-CoV-2 genotypes circulating in Latin America during 2021. Front Public Health 2023; 11:1095202. [PMID: 36935725 PMCID: PMC10018007 DOI: 10.3389/fpubh.2023.1095202] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 02/06/2023] [Indexed: 03/06/2023] Open
Abstract
Latin America is one of the regions in which the COVID-19 pandemic has a stronger impact, with more than 72 million reported infections and 1.6 million deaths until June 2022. Since this region is ecologically diverse and is affected by enormous social inequalities, efforts to identify genomic patterns of the circulating SARS-CoV-2 genotypes are necessary for the suitable management of the pandemic. To contribute to the genomic surveillance of the SARS-CoV-2 in Latin America, we extended the number of SARS-CoV-2 genomes available from the region by sequencing and analyzing the viral genome from COVID-19 patients from seven countries (Argentina, Brazil, Costa Rica, Colombia, Mexico, Bolivia, and Peru). Subsequently, we analyzed the genomes circulating mainly during 2021 including records from GISAID database from Latin America. A total of 1,534 genome sequences were generated from seven countries, demonstrating the laboratory and bioinformatics capabilities for genomic surveillance of pathogens that have been developed locally. For Latin America, patterns regarding several variants associated with multiple re-introductions, a relatively low percentage of sequenced samples, as well as an increment in the mutation frequency since the beginning of the pandemic, are in line with worldwide data. Besides, some variants of concern (VOC) and variants of interest (VOI) such as Gamma, Mu and Lambda, and at least 83 other lineages have predominated locally with a country-specific enrichments. This work has contributed to the understanding of the dynamics of the pandemic in Latin America as part of the local and international efforts to achieve timely genomic surveillance of SARS-CoV-2.
Collapse
Affiliation(s)
- Jose Arturo Molina-Mora
- Centro de investigación en Enfermedades Tropicales and Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
- *Correspondence: Jose Arturo Molina-Mora
| | | | - Erwin Camacho
- Investigaciones Biomédicas, Universidad de Sucre, Sincelejo, Colombia
| | - Francisco Duarte-Martínez
- Laboratorio de Genómica y Biología Molecular, Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud, Tres Ríos, Cartago, Costa Rica
| | - Pablo Tsukayama
- Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Claudio Soto-Garita
- Laboratorio de Genómica y Biología Molecular, Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud, Tres Ríos, Cartago, Costa Rica
| | - Hebleen Brenes
- Laboratorio de Genómica y Biología Molecular, Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud, Tres Ríos, Cartago, Costa Rica
| | - Estela Cordero-Laurent
- Laboratorio de Genómica y Biología Molecular, Instituto Costarricense de Investigación y Enseñanza en Nutrición y Salud, Tres Ríos, Cartago, Costa Rica
| | | | | | - Caio Santos Silva
- Instituto de Ciências Biológica, Universidade Federal do Pará, Belém, Brazil
| | | | - Gisele Nunes
- Environmental Genomics, Vale Institute of Technology, Belém, Pará, Brazil
| | - Tatianne Negri
- Environmental Genomics, Vale Institute of Technology, Belém, Pará, Brazil
| | - Amanda Vidal
- Environmental Genomics, Vale Institute of Technology, Belém, Pará, Brazil
| | - Renato Oliveira
- Environmental Genomics, Vale Institute of Technology, Belém, Pará, Brazil
| | - Guilherme Oliveira
- Environmental Genomics, Vale Institute of Technology, Belém, Pará, Brazil
| | - José Esteban Muñoz-Medina
- Coordinación de Calidad de Insumos y Laboratorios Especializados, Instituto Mexicano del Seguro Social, Ciudad de Mexico, Mexico
| | - Angel Gustavo Salas-Lais
- Coordinación de Calidad de Insumos y Laboratorios Especializados, Instituto Mexicano del Seguro Social, Ciudad de Mexico, Mexico
| | - Guadalupe Mireles-Rivera
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Centro de Investigación y de Estudios Avanzados, Irapuato, Mexico
| | - Ezequiel Sosa
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Adrián Turjanski
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - María Cecilia Monzani
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Medicina de la Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mauricio G. Carobene
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Medicina de la Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Facultad de Medicina de la Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Gustavo Schottlender
- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | | | | | - Luisa Sacristán
- Vicerrectoria de Investigación y Creación, Universidad de Los Andes, Bogotá, Colombia
| | | | - Marco Cristancho
- Vicerrectoria de Investigación y Creación, Universidad de Los Andes, Bogotá, Colombia
| | - Rebeca Campos-Sánchez
- Centro de Investigación en Biología Celular y Molecular, Universidad de Costa Rica, San José, Costa Rica
| | - Alfredo Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Centro de Investigación y de Estudios Avanzados, Irapuato, Mexico
- Alfredo Herrera-Estrella
| |
Collapse
|
8
|
Ochoa V, Erra Díaz F, Ramirez E, Fentini MC, Carobene M, Geffner J, Arruvito L, Remes Lenicov F. Reply to Kao and Liaw. J Infect Dis 2022; 226:189. [PMID: 35245935 DOI: 10.1093/infdis/jiac081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 03/02/2022] [Indexed: 11/14/2022] Open
Affiliation(s)
- Valeria Ochoa
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| | - Fernando Erra Díaz
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| | - Ezequiel Ramirez
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| | - María Clara Fentini
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| | - Mauricio Carobene
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| | - Jorge Geffner
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| | - Lourdes Arruvito
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Universidad de Buenos Aires - Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS-CONICET), Buenos Aires, Argentina
| |
Collapse
|
9
|
Ochoa V, Díaz FE, Ramirez E, Fentini MC, Carobene M, Geffner J, Arruvito L, Remes Lenicov F. Infants Younger Than 6 Months Infected With SARS-CoV-2 Show the Highest Respiratory Viral Loads. J Infect Dis 2022; 225:392-395. [PMID: 34850028 PMCID: PMC8690165 DOI: 10.1093/infdis/jiab577] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 09/02/2021] [Accepted: 11/23/2021] [Indexed: 11/13/2022] Open
Abstract
There is a paucity of reports on the characteristics of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in infants, because most studies have grouped infants with older children. We analyzed the viral loads of 45318 SARS-CoV-2-positive nasopharyngeal swab samples obtained in Buenos Aires, Argentina. Infants younger than 6 months presented higher viral loads than any other age group. Children older than 6 months showed significantly lower viral loads, similar to those founds in adults. This observation raises new questions regarding the role of infants in the spreading of SARS-CoV-2 infection.
Collapse
Affiliation(s)
- Valeria Ochoa
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Fernando Erra Díaz
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Ezequiel Ramirez
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - María Clara Fentini
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Mauricio Carobene
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Jorge Geffner
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Lourdes Arruvito
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Universidad de Buenos Aires-Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| |
Collapse
|
10
|
Paletta A, Di Diego García F, Varese A, Erra Diaz F, García J, Cisneros JC, Ludueña G, Mazzitelli I, Pisarevsky A, Cabrerizo G, López Malizia Á, Rodriguez AG, Lista N, Longueira Y, Sabatté J, Geffner J, Remes Lenicov F, Ceballos A. Platelets modulate CD4 + T Cell function in Covid-19 Through A PD-L1 Dependent Mechanism. Br J Haematol 2022; 197:283-292. [PMID: 35076084 DOI: 10.1111/bjh.18062] [Citation(s) in RCA: 2] [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: 11/05/2021] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 11/29/2022]
Abstract
Severe COVID-19 is associated with a systemic inflammatory response and progressive CD4+ T cell lymphopenia and dysfunction. We evaluated whether platelets might contribute to CD4+ T cell dysfunction in COVID-19. We observed a high frequency of CD4+ T cell-platelet aggregates in COVID-19 inpatients that inversely correlated with lymphocyte counts. Platelets from COVID-19 inpatients but not from healthy donors (HD) inhibited the up-regulation of CD25 expression and TNF-α production by CD4+ T cells. In addition, IFN-γ production was increased by platelets from HD but not from COVID-19 inpatients. A high expression of PD-L1 was found in platelets from COVID-19 patients to be inversely correlated with IFN-γ production by activated CD4+ T cells co-cultured with platelets. We also found that a PD-L1 blocking antibody significantly restored platelet-ability to stimulate IFN-γ production by CD4+ T cells. Our study suggests that platelets might contribute to disease progression in COVID-19 not only by promoting thrombotic and inflammatory events, but also by affecting CD4+ T cells functionality.
Collapse
Affiliation(s)
- Ana Paletta
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Facundo Di Diego García
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Augusto Varese
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Fernando Erra Diaz
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Julián García
- División C, Hospital de Enfermedades Infecciosas Francisco Muñiz, Buenos Aires, Argentina
| | - Juan Carlos Cisneros
- Unidad de Terapia Intensiva, Hospital de Enfermedades Infecciosas Francisco Muñiz, Buenos Aires, Argentina
| | - Guillermina Ludueña
- Departamento de Medicina Interna, Hospital de Clínicas, Universidad de Buenos Aires, Argentina
| | - Ignacio Mazzitelli
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Andrea Pisarevsky
- Departamento de Medicina Interna, Hospital de Clínicas, Universidad de Buenos Aires, Argentina
| | - Gonzalo Cabrerizo
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Álvaro López Malizia
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Alejandra G Rodriguez
- Unidad de Terapia Intensiva, Hospital de Enfermedades Infecciosas Francisco Muñiz, Buenos Aires, Argentina
| | - Nicolás Lista
- Unidad de Terapia Intensiva, Hospital de Enfermedades Infecciosas Francisco Muñiz, Buenos Aires, Argentina
| | - Yesica Longueira
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Juan Sabatté
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Jorge Geffner
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Ana Ceballos
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| |
Collapse
|
11
|
D’Addario AC, Bustos CA, Cohen RV, Rullán Corna AF, Gómez PE, Torrisi RH, Di Salvo H, Herbstein JA, Remes Lenicov F, Maffia Bizzozero S. Detection of SARS-CoV-2 RNA by PCR in a series of corpses sent for autopsy. Spanish Journal of Legal Medicine 2022. [PMCID: PMC8529260 DOI: 10.1016/j.remle.2021.02.002] [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] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Following the emergence of SARS-CoV-2 in the world, the COVID-19 pandemic broke out, affecting 185 countries. There have been numerous scientific publications presenting epidemiological, clinical, statistical, and microbiological data. The high mortality has implied the need for increasingly accurate data regarding the virus and its behaviour in the environment and, on the other hand, faced health teams with a serious problem in relation to the safe handling of corpses and the risks of transmission that this implies. The objective of this study was to detect the presence of SARS-CoV-2 RNA in corpses sent to the National Judicial Morgue that were not included in the definition of a suspected case submitted by the Argentine Ministry of Health. Nasopharyngeal and oropharyngeal swabs were taken from 101 cadavers chosen randomly and based on inclusion criteria for detection of viral RNA using the RT-PCR technique. Of the cadavers included in the study, 16.8%, not classified as suspected cases of COVID-19, were tested for the presence of viral RNA in the samples collected.
Collapse
|
12
|
Torres C, Mojsiejczuk L, Acuña D, Alexay S, Amadio A, Aulicino P, Debat H, Fay F, Fernández F, Giri AA, Goya S, König G, Lucero H, Nabaes Jodar M, Pianciola L, Sfalcin JA, Acevedo RM, Bengoa Luoni S, Bolatti EM, Brusés B, Cacciabue M, Casal PE, Cerri A, Chouhy D, Dus Santos MJ, Eberhardt MF, Fernandez A, Fernández PDC, Fernández Do Porto D, Formichelli L, Gismondi MI, Irazoqui M, Campos ML, Lusso S, Marquez N, Muñoz M, Mussin J, Natale M, Oria G, Pisano MB, Posner V, Puebla A, Re V, Sosa E, Villanova GV, Zaiat J, Zunino S, Acevedo ME, Acosta J, Alvarez Lopez C, Álvarez ML, Angeleri P, Angelletti A, Arca M, Ayala NA, Barbas G, Bertone A, Bonnet A, Bourlot I, Cabassi V, Castello A, Castro G, Cavatorta AL, Ceriani C, Cimmino C, Cipelli J, Colmeiro M, Cordero A, Cristina C, Di Bella S, Dolcini G, Ercole R, Espasandin Y, Espul C, Falaschi A, Fernandez Moll F, Foussal MD, Gatelli A, Goñi S, Jofré ME, Jaramillo J, Labarta N, Lacaze MA, Larreche R, Leiva V, Levin G, Luczak E, Mandile M, Marino G, Massone C, Mazzeo M, Medina C, Monaco B, Montoto L, Mugna V, Musto A, Nadalich V, Nieto MV, Ojeda G, Piedrabuena AC, Pintos C, Pozzati M, Rahhal M, Rechimont C, Remes Lenicov F, Rompato G, Seery V, Siri L, Spina J, Streitenberger C, Suárez A, Suárez J, Sujansky P, Talia JM, Theaux C, Thomas G, Ticeira M, Tittarelli E, Toro R, Uez O, Zaffanella MB, Ziehm C, Zubieta M. Cost-Effective Method to Perform SARS-CoV-2 Variant Surveillance: Detection of Alpha, Gamma, Lambda, Delta, Epsilon, and Zeta in Argentina. Front Med (Lausanne) 2021; 8:755463. [PMID: 34957143 PMCID: PMC8703000 DOI: 10.3389/fmed.2021.755463] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 11/02/2021] [Indexed: 11/23/2022] Open
Abstract
SARS-CoV-2 variants with concerning characteristics have emerged since the end of 2020. Surveillance of SARS-CoV-2 variants was performed on a total of 4,851 samples from the capital city and 10 provinces of Argentina, during 51 epidemiological weeks (EWs) that covered the end of the first wave and the ongoing second wave of the COVID-19 pandemic in the country (EW 44/2020 to EW 41/2021). The surveillance strategy was mainly based on Sanger sequencing of a Spike coding region that allows the identification of signature mutations associated with variants. In addition, whole-genome sequences were obtained from 637 samples. The main variants found were Gamma and Lambda, and to a lesser extent, Alpha, Zeta, and Epsilon, and more recently, Delta. Whereas, Gamma dominated in different regions of the country, both Gamma and Lambda prevailed in the most populated area, the metropolitan region of Buenos Aires. The lineages that circulated on the first wave were replaced by emergent variants in a term of a few weeks. At the end of the ongoing second wave, Delta began to be detected, replacing Gamma and Lambda. This scenario is consistent with the Latin American variant landscape, so far characterized by a concurrent increase in Delta circulation and a stabilization in the number of cases. The cost-effective surveillance protocol presented here allowed for a rapid response in a resource-limited setting, added information on the expansion of Lambda in South America, and contributed to the implementation of public health measures to control the disease spread in Argentina.
Collapse
Affiliation(s)
- Carolina Torres
- Facultad de Farmacia y Bioquímica, Instituto de Investigaciones en Bacteriología y Virología Molecular (IBaViM), Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Laura Mojsiejczuk
- Facultad de Farmacia y Bioquímica, Instituto de Investigaciones en Bacteriología y Virología Molecular (IBaViM), Universidad de Buenos Aires, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Dolores Acuña
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Sofía Alexay
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Ariel Amadio
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Investigación de la Cadena Láctea (IDICAL) INTA-CONICET, Rafaela, Argentina
| | - Paula Aulicino
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Laboratorio de Biología Celular y Retrovirus, Hospital de Pediatría “Prof. Juan P. Garrahan”, Buenos Aires, Argentina
| | - Humberto Debat
- Instituto de Patología Vegetal – Centro de Investigaciones Agropecuarias – Instituto Nacional de Tecnología Agropecuaria (IPAVE-CIAP-INTA), Córdoba, Argentina
| | | | - Franco Fernández
- Instituto de Patología Vegetal – Centro de Investigaciones Agropecuarias – Instituto Nacional de Tecnología Agropecuaria (IPAVE-CIAP-INTA), Córdoba, Argentina
| | - Adriana A. Giri
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Virología Humana, Instituto de Biología Molecular y Celular de Rosario CONICET, Rosario, Argentina
| | - Stephanie Goya
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Guido König
- Instituto de Biotecnología/Instituto de Agrobiotecnología y Biología Molecular INTA-CONICET, Hurlingham, Argentina
| | - Horacio Lucero
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Argentina
| | - Mercedes Nabaes Jodar
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Luis Pianciola
- Laboratorio Central Ciudad de Neuquén, Ministerio de Salud, Neuquén, Argentina
| | | | - Raúl M. Acevedo
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Botánica del Nordeste, Universidad Nacional del Nordeste-CONICET, Resistencia, Argentina
| | - Sofía Bengoa Luoni
- Instituto de Biotecnología/Instituto de Agrobiotecnología y Biología Molecular INTA-CONICET, Hurlingham, Argentina
| | - Elisa M. Bolatti
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Virología Humana, Instituto de Biología Molecular y Celular de Rosario CONICET, Rosario, Argentina
| | - Bettina Brusés
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Argentina
| | - Marco Cacciabue
- Instituto de Biotecnología/Instituto de Agrobiotecnología y Biología Molecular INTA-CONICET, Hurlingham, Argentina
| | - Pablo E. Casal
- Grupo Virología Humana, Instituto de Biología Molecular y Celular de Rosario CONICET, Rosario, Argentina
| | - Agustina Cerri
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Virología Humana, Instituto de Biología Molecular y Celular de Rosario CONICET, Rosario, Argentina
| | - Diego Chouhy
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Grupo Virología Humana, Instituto de Biología Molecular y Celular de Rosario CONICET, Rosario, Argentina
| | - María José Dus Santos
- Instituto de Virología e Innovaciones Tecnológicas INTA-CONICET, Hurlingham, Argentina
- Laboratorio de Diagnóstico-UNIDAD COVID- Universidad Nacional de Hurlingham, Hurlingham, Argentina
| | - María Florencia Eberhardt
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Investigación de la Cadena Láctea (IDICAL) INTA-CONICET, Rafaela, Argentina
| | - Ailen Fernandez
- Laboratorio Central Ciudad de Neuquén, Ministerio de Salud, Neuquén, Argentina
| | - Paula del Carmen Fernández
- Instituto de Biotecnología/Instituto de Agrobiotecnología y Biología Molecular INTA-CONICET, Hurlingham, Argentina
| | - Darío Fernández Do Porto
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Cálculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Laura Formichelli
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Argentina
| | - María Inés Gismondi
- CIBIC Laboratorio, Rosario, Argentina
- Departamento de Ciencias Básicas, Universidad Nacional de Luján, Luján, Argentina
| | - Matías Irazoqui
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Investigación de la Cadena Láctea (IDICAL) INTA-CONICET, Rafaela, Argentina
| | - Melina Lorenzini Campos
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Argentina
| | - Silvina Lusso
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Nathalie Marquez
- Instituto de Patología Vegetal – Centro de Investigaciones Agropecuarias – Instituto Nacional de Tecnología Agropecuaria (IPAVE-CIAP-INTA), Córdoba, Argentina
| | - Marianne Muñoz
- Unidad de Genómica del Instituto de Biotecnología/Instituto de Agrobiotecnología y Biología Molecular, INTA-CONICET, Hurlingham, Argentina
| | - Javier Mussin
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Argentina
| | - Mónica Natale
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Griselda Oria
- Instituto de Medicina Regional, Universidad Nacional del Nordeste, Resistencia, Argentina
| | - María Belén Pisano
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Victoria Posner
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Laboratorio Mixto de Biotecnología Acuática, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Andrea Puebla
- Unidad de Genómica del Instituto de Biotecnología/Instituto de Agrobiotecnología y Biología Molecular, INTA-CONICET, Hurlingham, Argentina
| | - Viviana Re
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Ezequiel Sosa
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - Gabriela V. Villanova
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Laboratorio Mixto de Biotecnología Acuática, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Jonathan Zaiat
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), CONICET, Ciudad Universitaria, Buenos Aires, Argentina
| | - Sebastián Zunino
- Laboratorio Central Ciudad de Neuquén, Ministerio de Salud, Neuquén, Argentina
- Laboratorio de Virología Molecular, Hospital Blas L. Dubarry, Mercedes, Argentina
| | - María Elina Acevedo
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Julián Acosta
- Centro de Tecnología en Salud Pública, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Cristina Alvarez Lopez
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - María Laura Álvarez
- Laboratorio del Hospital Zonal Dr. Ramón Carrillo, San Carlos de Bariloche, Argentina
| | - Patricia Angeleri
- Comité Operativo de Emergencia COVID, Ministerio de Salud de la Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Andrés Angelletti
- Laboratorio de Salud Pública, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
- Laboratorio de Virología, HIEAyC “San Juan de Dios”, La Plata, Argentina
| | - Manuel Arca
- Laboratorio de Virología del Hospital JJ Urquiza, Concepción del Uruguay, Argentina
| | - Natalia A. Ayala
- Laboratorio Central de Salud Pública del Chaco, Resistencia, Argentina
| | - Gabriela Barbas
- Secretaria de Prevención y Promoción, Ministerio de Salud de la Provincia de Córdoba, Córdoba, Argentina
| | - Ana Bertone
- Laboratorio de la Dirección de Epidemiología, Santa Rosa, Argentina
| | - Agustina Bonnet
- Laboratorio de Virología del Hospital JJ Urquiza, Concepción del Uruguay, Argentina
| | - Ignacio Bourlot
- Laboratorio de Biología Molecular del Hospital Centenario, Gualeguaychú, Argentina
| | - Victoria Cabassi
- Laboratorio de Salud Pública, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Alejandro Castello
- Unidad de Emergencia COVID-19, Plataforma de Servicios Biotecnológicos, Universidad Nacional de Quilmes, Bernal, Argentina
| | - Gonzalo Castro
- Laboratorio Central de la Provincia de Córdoba, Ministerio de Salud la Provincia de Córdoba, Córdoba, Argentina
| | - Ana Laura Cavatorta
- Centro de Tecnología en Salud Pública, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Rosario, Argentina
| | - Carolina Ceriani
- Laboratorio de Virología, Facultad de Veterinaria, Universidad Nacional del Centro de la Provincia de Buenos Aires, Buenos Aires, Argentina
| | - Carlos Cimmino
- Instituto Nacional de Epidemiología “Dr. Jara”, Mar del Plata, Argentina
| | - Julián Cipelli
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - María Colmeiro
- Laboratorio de Virología, HIEAyC “San Juan de Dios”, La Plata, Argentina
| | - Andrés Cordero
- Laboratorio de Salud Pública, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Carolina Cristina
- Centro de Investigaciones Básicas y Aplicadas, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Junín, Argentina
| | - Sofia Di Bella
- Laboratorio de Virología, HIEAyC “San Juan de Dios”, La Plata, Argentina
| | - Guillermina Dolcini
- Laboratorio de Virología, Facultad de Veterinaria, Universidad Nacional del Centro de la Provincia de Buenos Aires, Buenos Aires, Argentina
| | - Regina Ercole
- Laboratorio de Virología, HIEAyC “San Juan de Dios”, La Plata, Argentina
| | - Yesica Espasandin
- Laboratorio del Hospital Zonal Dr. Ramón Carrillo, San Carlos de Bariloche, Argentina
| | - Carlos Espul
- Dirección de Epidemiología y Red de Laboratorios del Ministerio de Salud de la Provincia de Mendoza, Mendoza, Argentina
| | - Andrea Falaschi
- Dirección de Epidemiología y Red de Laboratorios del Ministerio de Salud de la Provincia de Mendoza, Mendoza, Argentina
| | - Facundo Fernandez Moll
- Centro de Investigaciones Básicas y Aplicadas, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Junín, Argentina
| | - María Delia Foussal
- Servicio de Inmunología, Hospital Dr. Julio C Perrando, Resistencia, Argentina
| | - Andrea Gatelli
- Laboratorio de Virología, HIEAyC “San Juan de Dios”, La Plata, Argentina
| | - Sandra Goñi
- Unidad de Emergencia COVID-19, Plataforma de Servicios Biotecnológicos, Universidad Nacional de Quilmes, Bernal, Argentina
| | | | - José Jaramillo
- Laboratorio de Virología Molecular, Hospital Blas L. Dubarry, Mercedes, Argentina
| | - Natalia Labarta
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - María Agustina Lacaze
- Programa Laboratorio de Salud Pública “Dr Dalmiro Pérez Laborda”, Ministerio de Salud de la Provincia de San Luis, San Luis, Argentina
| | - Rocio Larreche
- Laboratorio de Biología Molecular Bolívar, LABBO, Bolívar, Argentina
| | | | - Gustavo Levin
- Laboratorio de Biología Molecular del Hospital Centenario, Gualeguaychú, Argentina
| | - Erica Luczak
- Laboratorio del Hospital Interzonal General de Agudos “Evita”, Lanús, Argentina
| | - Marcelo Mandile
- Unidad de Emergencia COVID-19, Plataforma de Servicios Biotecnológicos, Universidad Nacional de Quilmes, Bernal, Argentina
| | - Gioia Marino
- Laboratorio Pediátrico Avelino Castelán, Resistencia, Argentina
| | - Carla Massone
- Laboratorio de Virología Molecular, Hospital Blas L. Dubarry, Mercedes, Argentina
| | - Melina Mazzeo
- Laboratorio Central Ciudad de Neuquén, Ministerio de Salud, Neuquén, Argentina
| | - Carla Medina
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Belén Monaco
- Laboratorio de Virología Molecular, Hospital Blas L. Dubarry, Mercedes, Argentina
| | - Luciana Montoto
- Laboratorio de Biología Molecular Hospital Pedro de Elizalde, Buenos Aires, Argentina
| | | | | | - Victoria Nadalich
- Laboratorio de Salud Pública, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - María Victoria Nieto
- Laboratorio de Virología, Facultad de Veterinaria, Universidad Nacional del Centro de la Provincia de Buenos Aires, Buenos Aires, Argentina
| | | | - Andrea C. Piedrabuena
- Servicio de Microbiología, Hospital 4 de Junio, Presidencia Roque Saenz Peña, Argentina
| | - Carolina Pintos
- Laboratorio Central Ciudad de Neuquén, Ministerio de Salud, Neuquén, Argentina
| | - Marcia Pozzati
- Laboratorio de Biología Molecular, Hospital Cosme Argerich, Buenos Aires, Argentina
| | - Marilina Rahhal
- Laboratorio de Hospital El Cruce Dr. Néstor C. Kirchner, Florencio Varela, Argentina
| | | | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida, CONICET-UBA, Buenos Aires, Argentina
| | | | - Vanesa Seery
- Instituto de Investigaciones Biomédicas en Retrovirus y Sida, CONICET-UBA, Buenos Aires, Argentina
| | - Leticia Siri
- Laboratorio de Biología Molecular del Hospital Centenario, Gualeguaychú, Argentina
| | - Julieta Spina
- Laboratorio de Biología Molecular, Hospital Dr. Héctor Cura, Olavarría, Argentina
| | - Cintia Streitenberger
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Ariel Suárez
- Departamento de Biología y Genética Molecular; IACA Laboratorios, Bahía Blanca, Argentina
| | - Jorgelina Suárez
- Centro de Investigaciones Básicas y Aplicadas, Universidad Nacional del Noroeste de la Provincia de Buenos Aires, Junín, Argentina
| | - Paula Sujansky
- Comité Operativo de Emergencia COVID, Ministerio de Salud de la Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
| | - Juan Manuel Talia
- Programa Laboratorio de Salud Pública “Dr Dalmiro Pérez Laborda”, Ministerio de Salud de la Provincia de San Luis, San Luis, Argentina
| | - Clara Theaux
- Laboratorio de Biología Molecular del Hospital General de Agudos Dr. Carlos G. Durand, Buenos Aires, Argentina
| | - Guillermo Thomas
- Laboratorio de Virología, Hospital de Niños Dr. Ricardo Gutiérrez, Buenos Aires, Argentina
| | - Marina Ticeira
- Laboratorio de Biología Molecular Bolívar, LABBO, Bolívar, Argentina
| | - Estefanía Tittarelli
- Departamento de Biología y Genética Molecular; IACA Laboratorios, Bahía Blanca, Argentina
| | - Rosana Toro
- Laboratorio de Salud Pública, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Osvaldo Uez
- Instituto Nacional de Epidemiología “Dr. Jara”, Mar del Plata, Argentina
| | | | - Cecilia Ziehm
- Laboratorio Central Ciudad de Neuquén, Ministerio de Salud, Neuquén, Argentina
| | - Martin Zubieta
- Laboratorio de Hospital El Cruce Dr. Néstor C. Kirchner, Florencio Varela, Argentina
| |
Collapse
|
13
|
Fuchs Wightman F, Godoy Herz MA, Muñoz JC, Stigliano JN, Bragado L, Moreno NN, Palavecino M, Servi L, Cabrerizo G, Clemente J, Avaro M, Pontoriero A, Benedetti E, Baumeister E, Rudolf F, Remes Lenicov F, Garcia C, Buggiano V, Kornblihtt AR, Srebrow A, de la Mata M, Muñoz MJ, Schor IE, Petrillo E. A DNA intercalating dye-based RT-qPCR alternative to diagnose SARS-CoV-2. RNA Biol 2021; 18:2218-2225. [PMID: 33966602 PMCID: PMC8174584 DOI: 10.1080/15476286.2021.1926648] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Early detection of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been proven crucial during the efforts to mitigate the effects of the COVID-19 pandemic. Several diagnostic methods have emerged in the past few months, each with different shortcomings and limitations. The current gold standard, RT-qPCR using fluorescent probes, relies on demanding equipment requirements plus the high costs of the probes and specific reaction mixes. To broaden the possibilities of reagents and thermocyclers that could be allocated towards this task, we have optimized an alternative strategy for RT-qPCR diagnosis. This is based on a widely used DNA-intercalating dye and can be implemented with several different qPCR reagents and instruments. Remarkably, the proposed qPCR method performs similarly to the broadly used TaqMan-based detection, in terms of specificity and sensitivity, thus representing a reliable tool. We think that, through enabling the use of vast range of thermocycler models and laboratory facilities for SARS-CoV-2 diagnosis, the alternative proposed here can increase dramatically the testing capability, especially in countries with limited access to costly technology and reagents.
Collapse
Affiliation(s)
- Federico Fuchs Wightman
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Micaela A Godoy Herz
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Juan C Muñoz
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - José N Stigliano
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Laureano Bragado
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Nicolas Nieto Moreno
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Marcos Palavecino
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Lucas Servi
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Gonzalo Cabrerizo
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - José Clemente
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Martín Avaro
- National Influenza Centre PAHO/WHO, Servicio Virosis Respiratorias, Departamento Virología, Instituto Nacional de Enfermedades Infecciosas, Buenos Aires, Argentina
| | - Andrea Pontoriero
- National Influenza Centre PAHO/WHO, Servicio Virosis Respiratorias, Departamento Virología, Instituto Nacional de Enfermedades Infecciosas, Buenos Aires, Argentina
| | - Estefanía Benedetti
- National Influenza Centre PAHO/WHO, Servicio Virosis Respiratorias, Departamento Virología, Instituto Nacional de Enfermedades Infecciosas, Buenos Aires, Argentina
| | - Elsa Baumeister
- National Influenza Centre PAHO/WHO, Servicio Virosis Respiratorias, Departamento Virología, Instituto Nacional de Enfermedades Infecciosas, Buenos Aires, Argentina
| | - Fabian Rudolf
- Department of Biosystems Science and Engineering, ETH Zurich, Basel, Switzerland.,SIB Swiss Institute of Bioinformatics, ETH Zurich, Basel, Switzerland
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Cybele Garcia
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad De Buenos Aires, Buenos Aires, Argentina.,Laboratorio de Estrategias Antivirales- IQUIBICEN, CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Valeria Buggiano
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Alberto R Kornblihtt
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Anabella Srebrow
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Manuel de la Mata
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Manuel J Muñoz
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina.,Fondazione Istituto FIRC di Oncologia Molecolare (IFOM), Milan, Italy.,Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Ignacio E Schor
- Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina
| | - Ezequiel Petrillo
- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE-UBA-CONICET), Ciudad Universitaria, Buenos Aires, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina.,Instituto Multidisciplinario de Investigación en Patologías Pediátricas (IMIPP), CONICET - GCBA, Buenos Aires, Argentina
| |
Collapse
|
14
|
Genoud V, Stortz M, Waisman A, Berardino BG, Verneri P, Dansey V, Salvatori M, Remes Lenicov F, Levi V. Extraction-free protocol combining proteinase K and heat inactivation for detection of SARS-CoV-2 by RT-qPCR. PLoS One 2021; 16:e0247792. [PMID: 33635936 PMCID: PMC7909620 DOI: 10.1371/journal.pone.0247792] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [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: 10/16/2020] [Accepted: 02/12/2021] [Indexed: 12/21/2022] Open
Abstract
Real-time reverse transcription PCR (RT-qPCR) is the gold-standard technique for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) detection in nasopharyngeal swabs specimens. The analysis by RT-qPCR usually requires a previous extraction step to obtain the purified viral RNA. Unfortunately, RNA extraction constitutes a bottleneck for early detection in many countries since it is expensive, time-consuming and depends on the availability of commercial kits. Here, we describe an extraction-free protocol for SARS-CoV-2 detection by RT-qPCR from nasopharyngeal swab clinical samples in saline solution. The method includes a treatment with proteinase K followed by heat inactivation (PK+HID method). We demonstrate that PK+HID improves the RT-qPCR performance in comparison to the heat-inactivation procedure. Moreover, we show that this extraction-free protocol can be combined with a variety of multiplexing RT-qPCR kits. The method combined with a multiplexing detection kit targeting N and ORF1ab viral genes showed a sensitivity of 0.99 and a specificity of 0.99 from the analysis of 106 positive and 106 negative clinical samples. In conclusion, PK+HID is a robust, fast and inexpensive procedure for extraction-free RT-qPCR determinations of SARS-CoV-2. The National Administration of Drugs, Foods and Medical Devices of Argentina has recently authorized the use of this method.
Collapse
Affiliation(s)
- Valeria Genoud
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Martin Stortz
- Facultad de Ciencias Exactas y Naturales, Departamento de Fisiología, Biología Molecular y Celular, Universidad de Buenos Aires, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | | | - Bruno G. Berardino
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Paula Verneri
- Facultad de Ciencias Exactas y Naturales, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Virginia Dansey
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Melina Salvatori
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Valeria Levi
- Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Universidad de Buenos Aires, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), CONICET-Universidad de Buenos Aires, Buenos Aires, Argentina
| |
Collapse
|
15
|
Ambrosis N, Martin Aispuro P, Belhart K, Bottero D, Crisp RL, Dansey MV, Gabrielli M, Filevich O, Genoud V, Giordano A, Lin MC, Lodeiro A, Marceca F, Pregi N, Lenicov FR, Rocha-Viegas L, Rudi E, Solovey G, Zurita E, Pecci A, Etchenique R, Hozbor D. Active Surveillance of Asymptomatic, Presymptomatic, and Oligosymptomatic SARS-CoV-2-Infected Individuals in Communities Inhabiting Closed or Semi-closed Institutions. Front Med (Lausanne) 2021; 8:640688. [PMID: 33614689 PMCID: PMC7889965 DOI: 10.3389/fmed.2021.640688] [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: 12/11/2020] [Accepted: 01/11/2021] [Indexed: 12/23/2022] Open
Abstract
Background: The high COVID-19 dissemination rate demands active surveillance to identify asymptomatic, presymptomatic, and oligosymptomatic (APO) SARS-CoV-2-infected individuals. This is of special importance in communities inhabiting closed or semi-closed institutions such as residential care homes, prisons, neuropsychiatric hospitals, etc., where risk people are in close contact. Thus, a pooling approach-where samples are mixed and tested as single pools-is an attractive strategy to rapidly detect APO-infected in these epidemiological scenarios. Materials and Methods: This study was done at different pandemic periods between May 28 and August 31 2020 in 153 closed or semi-closed institutions in the Province of Buenos Aires (Argentina). We setup pooling strategy in two stages: first a pool-testing followed by selective individual-testing according to pool results. Samples included in negative pools were presumed as negative, while samples from positive pools were re-tested individually for positives identification. Results: Sensitivity in 5-sample or 10-sample pools was adequate since only 2 Ct values were increased with regard to single tests on average. Concordance between 5-sample or 10-sample pools and individual-testing was 100% in the Ct ≤ 36. We tested 4,936 APO clinical samples in 822 pools, requiring 86-50% fewer tests in low-to-moderate prevalence settings compared to individual testing. Conclusions: By this strategy we detected three COVID-19 outbreaks at early stages in these institutions, helping to their containment and increasing the likelihood of saving lives in such places where risk groups are concentrated.
Collapse
Affiliation(s)
- Nicolás Ambrosis
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Pablo Martin Aispuro
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Keila Belhart
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Daniela Bottero
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Renée Leonor Crisp
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
| | - María Virginia Dansey
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Unidad de Microanálisis y Métodos Físicos en Química Orgánica, CONICET, Buenos Aires, Argentina
| | - Magali Gabrielli
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Oscar Filevich
- Escuela de Ciencia y Tecnología de la Universidad Nacional de San Martín, CONICET, Buenos Aires, Argentina
| | - Valeria Genoud
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
| | - Alejandra Giordano
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Min Chih Lin
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Instituto del Cálculo, CONICET, Buenos Aires, Argentina
| | - Anibal Lodeiro
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
- Laboratorio de Genética, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
| | - Felipe Marceca
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Matemática, Instituto de Investigaciones Matemáticas “Luis Santaló”, CONICET, Buenos Aires, Argentina
| | - Nicolás Pregi
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales, CONICET, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Universidad de Buenos Aires, Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, CONICET, Buenos Aires, Argentina
| | - Luciana Rocha-Viegas
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias, CONICET, Buenos Aires, Argentina
| | - Erika Rudi
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Guillermo Solovey
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Instituto del Cálculo, CONICET, Buenos Aires, Argentina
| | - Eugenia Zurita
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| | - Adali Pecci
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias, CONICET, Buenos Aires, Argentina
| | - Roberto Etchenique
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Biológica, Buenos Aires, Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Inorgánica, Analítica y Química Física, Instituto de Química Física de los Materiales, Medio Ambiente y Energía, CONICET, Buenos Aires, Argentina
| | - Daniela Hozbor
- Laboratorio VacSal, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular, Universidad Nacional de La Plata y CCT La Plata-CONICET, La Plata, Argentina
| |
Collapse
|
16
|
Remes Lenicov F, Paletta AL, Gonzalez Prinz M, Varese A, Pavillet CE, Lopez Malizia Á, Sabatté J, Geffner JR, Ceballos A. Prostaglandin E2 Antagonizes TGF-β Actions During the Differentiation of Monocytes Into Dendritic Cells. Front Immunol 2018; 9:1441. [PMID: 29988364 PMCID: PMC6023975 DOI: 10.3389/fimmu.2018.01441] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 01/18/2018] [Accepted: 06/11/2018] [Indexed: 12/27/2022] Open
Abstract
Inflammatory dendritic cells (DCs) are a distinct subset of DCs that derive from circulating monocytes infiltrating injured tissues. Monocytes can differentiate into DCs with different functional signatures, depending on the presence of environment stimuli. Among these stimuli, transforming growth factor-beta (TGF-β) and prostaglandin E2 (PGE2) have been shown to modulate the differentiation of monocytes into DCs with different phenotypes and functional profiles. In fact, both mediators lead to contrasting outcomes regarding the production of inflammatory and anti-inflammatory cytokines. Previously, we have shown that human semen, which contains high concentrations of PGE2, promoted the differentiation of DCs into a tolerogenic profile through a mechanism dependent on signaling by E-prostanoid receptors 2 and 4. Notably, this effect was induced despite the huge concentration of TGF-β present in semen, suggesting that PGE2 overrides the influence exerted by TGF-β. No previous studies have analyzed the joint actions induced by PGE2 and TGF-β on the function of monocytes or DCs. Here, we analyzed the phenotype and functional profile of monocyte-derived DCs differentiated in the presence of TGF-β and PGE2. DC differentiation guided by TGF-β alone enhanced the expression of CD1a and abrogated LPS-induced expression of IL-10, while differentiation in the presence of PGE2 impaired CD1a expression, preserved CD14 expression, abrogated IL-12 and IL-23 production, stimulated IL-10 production, and promoted the expansion of FoxP3+ regulatory T cells in a mixed lymphocyte reaction. Interestingly, DCs differentiated in the presence of TGF-β and PGE2 showed a phenotype and functional profile closely resembling those induced by PGE2 alone. Finally, we found that PGE2 inhibited TGF-β signaling through an action exerted by EP2 and EP4 receptors coupled to cyclic AMP increase and protein kinase A activity. These results indicate that PGE2 suppresses the influence exerted by TGF-β during DC differentiation, imprinting a tolerogenic signature. High concentrations of TGF-β and PGE2 are usually found in infectious, autoimmune, and neoplastic diseases. Our observations suggest that in these scenarios PGE2 might play a mandatory role in the acquisition of a regulatory profile by DCs.
Collapse
Affiliation(s)
- Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana Luz Paletta
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Melina Gonzalez Prinz
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Augusto Varese
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Clara E Pavillet
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Álvaro Lopez Malizia
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Juan Sabatté
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jorge Raul Geffner
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Ana Ceballos
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS), Universidad de Buenos Aires, Buenos Aires, Argentina
| |
Collapse
|
17
|
Cabrera M, Echeverria E, Lenicov FR, Cardama G, Gonzalez N, Davio C, Fernández N, Menna PL. Pharmacological Rac1 inhibitors with selective apoptotic activity in human acute leukemic cell lines. Oncotarget 2017; 8:98509-98523. [PMID: 29228706 PMCID: PMC5716746 DOI: 10.18632/oncotarget.21533] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 11/25/2016] [Accepted: 07/18/2017] [Indexed: 01/01/2023] Open
Abstract
Rac1 GTPase has long been recognized as a critical regulatory protein in different cellular and molecular processes involved in cancer progression, including acute myeloid leukemia. Here we show the antitumoral activity of ZINC69391 and 1A-116, two chemically-related Rac1 pharmacological inhibitors, on a panel of four leukemic cell lines representing different levels of maturation. Importantly, we show that the main mechanism involved in the antitumoral effect triggered by the Rac1 inhibitors comprises the induction of the mitochondrial or intrinsic apoptotic pathway. Interestingly, Rac1 inhibition selectively induced apoptosis on patient-derived leukemia cells but not on normal mononuclear cells. These results show the potential therapeutic benefits of targeting Rac1 pathway in hematopoietic malignancies.
Collapse
Affiliation(s)
- Maia Cabrera
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA CONICET), Buenos Aires, Argentina
| | - Emiliana Echeverria
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA CONICET), Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Facultad de Medicina, (INBIRS-UBA-CONICET), Buenos Aires, Argentina
| | - Georgina Cardama
- Laboratorio de Oncología Molecular, Universidad Nacional de Quilmes, Buenos Aires, Argentina
| | - Nazareno Gonzalez
- Laboratorio de Oncología Molecular, Universidad Nacional de Quilmes, Buenos Aires, Argentina
| | - Carlos Davio
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA CONICET), Buenos Aires, Argentina
| | - Natalia Fernández
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA CONICET), Buenos Aires, Argentina
| | - Pablo Lorenzano Menna
- Laboratorio de Oncología Molecular, Universidad Nacional de Quilmes, Buenos Aires, Argentina
| |
Collapse
|
18
|
Cabrera M, Gomez N, Remes Lenicov F, Echeverría E, Shayo C, Moglioni A, Fernández N, Davio C. G2/M Cell Cycle Arrest and Tumor Selective Apoptosis of Acute Leukemia Cells by a Promising Benzophenone Thiosemicarbazone Compound. PLoS One 2015; 10:e0136878. [PMID: 26360247 PMCID: PMC4567328 DOI: 10.1371/journal.pone.0136878] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 04/01/2015] [Accepted: 08/09/2015] [Indexed: 01/10/2023] Open
Abstract
Anti-mitotic therapies have been considered a hallmark in strategies against abnormally proliferating cells. Focusing on the extensively studied family of thiosemicarbazone (TSC) compounds, we have previously identified 4,4'-dimethoxybenzophenone thiosemicarbazone (T44Bf) as a promising pharmacological compound in a panel of human leukemia cell lines (HL60, U937, KG1a and Jurkat). Present findings indicate that T44Bf-mediated antiproliferative effects are associated with a reversible chronic mitotic arrest caused by defects in chromosome alignment, followed by induced programmed cell death. Furthermore, T44Bf selectively induces apoptosis in leukemia cell lines when compared to normal peripheral blood mononuclear cells. The underlying mechanism of action involves the activation of the mitochondria signaling pathway, with loss of mitochondrial membrane potential and sustained phosphorylation of anti-apoptotic protein Bcl-xL as well as increased Bcl-2 (enhanced phosphorylated fraction) and pro-apoptotic protein Bad levels. In addition, ERK signaling pathway activation was found to be a requisite for T44Bf apoptotic activity. Our findings further describe a novel activity for a benzophenone thiosemicarbazone and propose T44Bf as a promising anti-mitotic prototype to develop chemotherapeutic agents to treat acute leukemia malignancies.
Collapse
Affiliation(s)
- Maia Cabrera
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA-CONICET), Buenos Aires, Argentina
- * E-mail:
| | - Natalia Gomez
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA-CONICET), Buenos Aires, Argentina
- Cátedra de Química Medicinal, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Facultad de Medicina, (INBIRS-UBA-CONICET), Buenos Aires, Argentina
| | - Emiliana Echeverría
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA-CONICET), Buenos Aires, Argentina
| | - Carina Shayo
- Instituto de Biología y Medicina Experimental (IBYME-CONICET), Buenos Aires, Argentina
| | - Albertina Moglioni
- Instituto de Química y Metabolismo del Fármaco, Facultad de Farmacia y Bioquímica, (IQUIMEFA-UBA-CONICET), Buenos Aires, Argentina
- Cátedra de Química Medicinal, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Natalia Fernández
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA-CONICET), Buenos Aires, Argentina
- Cátedra de Química Medicinal, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Carlos Davio
- Instituto de Investigaciones Farmacológicas, Facultad de Farmacia y Bioquímica (ININFA-UBA-CONICET), Buenos Aires, Argentina
- Cátedra de Química Medicinal, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| |
Collapse
|
19
|
Lenicov FR, Varese A, Merlotti A, Geffner J, Ceballos A. Prostaglandin E2 inhibits the proinflammatory phenotype induced by TGF-β on monocyte-derived dendritic cells. Placenta 2015. [DOI: 10.1016/j.placenta.2015.01.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
Merlotti A, Ruiz MJ, Díaz FE, Dantas E, Varese A, Duette G, Pereyra P, Glenda E, Lenicov FR, Geffner J, Sabatté J. Seminal Plasma Modulates Dendritic Cell Function Favoring the Generation of CD25+/FOXP3+ T-cells. AIDS Res Hum Retroviruses 2014. [DOI: 10.1089/aid.2014.5367.abstract] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Antonela Merlotti
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Maria Julia Ruiz
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Fernando Erra Díaz
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Ezequiel Dantas
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Augusto Varese
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Gabriel Duette
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Pehuen Pereyra
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Ernst Glenda
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Jorge Geffner
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| | - Juan Sabatté
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires/CONICET, Capital Federal, Argentina
| |
Collapse
|
21
|
Borge M, Remes Lenicov F, Nannini PR, de los Ríos Alicandú MM, Podaza E, Ceballos A, Fernández Grecco H, Cabrejo M, Bezares RF, Morande PE, Oppezzo P, Giordano M, Gamberale R. The Expression of Sphingosine-1 Phosphate Receptor-1 in Chronic Lymphocytic Leukemia Cells Is Impaired by Tumor Microenvironmental Signals and Enhanced by Piceatannol and R406. J I 2014; 193:3165-74. [DOI: 10.4049/jimmunol.1400547] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
22
|
Rodriguez Rodrigues C, Remes Lenicov F, Jancic C, Sabatté J, Cabrini M, Ceballos A, Merlotti A, Gonzalez H, Ostrowski M, Geffner J. Candida albicans delays HIV-1 replication in macrophages. PLoS One 2013; 8:e72814. [PMID: 24009706 PMCID: PMC3751824 DOI: 10.1371/journal.pone.0072814] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Accepted: 07/21/2013] [Indexed: 11/19/2022] Open
Abstract
Macrophages are one of the most important HIV-1 target cells. Unlike CD4(+) T cells, macrophages are resistant to the cytophatic effect of HIV-1. They are able to produce and harbor the virus for long periods acting as a viral reservoir. Candida albicans (CA) is a commensal fungus that colonizes the portals of HIV-1 entry, such as the vagina and the rectum, and becomes an aggressive pathogen in AIDS patients. In this study, we analyzed the ability of CA to modulate the course of HIV-1 infection in human monocyte-derived macrophages. We found that CA abrogated HIV-1 replication in macrophages when it was evaluated 7 days after virus inoculation. A similar inhibitory effect was observed in monocyte-derived dendritic cells. The analysis of the mechanisms responsible for the inhibition of HIV-1 production in macrophages revealed that CA efficiently sequesters HIV-1 particles avoiding its infectivity. Moreover, by acting on macrophages themselves, CA diminishes their permissibility to HIV-1 infection by reducing the expression of CD4, enhancing the production of the CCR5-interacting chemokines CCL3/MIP-1α, CCL4/MIP-1β, and CCL5/RANTES, and stimulating the production of interferon-α and the restriction factors APOBEC3G, APOBEC3F, and tetherin. Interestingly, abrogation of HIV-1 replication was overcome when the infection of macrophages was evaluated 2-3 weeks after virus inoculation. However, this reactivation of HIV-1 infection could be silenced by CA when added periodically to HIV-1-challenged macrophages. The induction of a silent HIV-1 infection in macrophages at the periphery, where cells are continuously confronted with CA, might help HIV-1 to evade the immune response and to promote resistance to antiretroviral therapy.
Collapse
Affiliation(s)
- Christian Rodriguez Rodrigues
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Carolina Jancic
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), Hospital de Clínicas “José de San Martín”, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Juan Sabatté
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Mercedes Cabrini
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Ana Ceballos
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Antonela Merlotti
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Heidi Gonzalez
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Matías Ostrowski
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
| | - Jorge Geffner
- Instituto de Investigaciones Médicas en Retrovirus y SIDA (INBIRS), Facultad de Medicina, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
- Instituto de Inmunología, Genética y Metabolismo (INIGEM), Hospital de Clínicas “José de San Martín”, Universidad de Buenos Aires, Ciudad de Buenos Aires, Argentina
- * E-mail:
| |
Collapse
|
23
|
Remes Lenicov F, Rodriguez Rodrigues C, Sabatté J, Cabrini M, Jancic C, Ostrowski M, Merlotti A, Gonzalez H, Alonso A, Pasqualini RA, Davio C, Geffner J, Ceballos A. Semen promotes the differentiation of tolerogenic dendritic cells. J Immunol 2012; 189:4777-86. [PMID: 23066152 DOI: 10.4049/jimmunol.1202089] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Seminal plasma is not just a carrier for spermatozoa. It contains high concentrations of cytokines, chemokines, and other biological compounds that are able to exert potent effects on the immune system of the receptive partner. Previous studies have shown that semen induces an acute inflammatory response at the female genital mucosa after coitus. Moreover, it induces regulatory mechanisms that allow the fetus (a semiallograft) to grow and develop in the uterus. The mechanisms underlying these regulatory mechanisms, however, are poorly understood. In this study, we show that seminal plasma redirects the differentiation of human dendritic cells (DCs) toward a regulatory profile. DCs differentiated from human monocytes in the presence of high dilutions of seminal plasma did not express CD1a but showed high levels of CD14. They were unable to develop a fully mature phenotype in response to LPS, TNF-α, CD40L, Pam2CSK4 (TLR2/6 agonist), or Pam3CSK4 (TLR1/2 agonist). Upon activation, they produced low amounts of the inflammatory cytokines IL-12p70, IL-1β, TNF-α, and IL-6, but expressed a high ability to produce IL-10 and TGF-β. Inhibition of the PG receptors E-prostanoid receptors 2 and 4 prevented the tolerogenic effect induced by seminal plasma on the phenotype and function of DCs, suggesting that E-series PGs play a major role. By promoting a tolerogenic profile in DCs, seminal plasma might favor fertility, but might also compromise the capacity of the receptive partner to mount an effective immune response against sexually transmitted pathogens.
Collapse
Affiliation(s)
- Federico Remes Lenicov
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA, Universidad de Buenos Aires, Buenos Aires C1121ABG, Argentina
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Rodriguez Rodrigues C, Cabrini M, Remes Lenicov F, Sabatté J, Ceballos A, Jancic C, Raiden S, Ostrowski M, Silberstein C, Geffner J. Epithelial cells activate plasmacytoid dendritic cells improving their anti-HIV activity. PLoS One 2011; 6:e28709. [PMID: 22163327 PMCID: PMC3233592 DOI: 10.1371/journal.pone.0028709] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [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: 05/18/2011] [Accepted: 11/14/2011] [Indexed: 12/03/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs) play a major role in anti-viral immunity by virtue of their ability to produce high amounts of type I interferons (IFNs) and a variety of inflammatory cytokines and chemokines in response to viral infections. Since recent studies have established that pDCs accumulate at the site of virus entry in the mucosa, here we analyzed whether epithelial cells were able to modulate the function of pDCs. We found that the epithelial cell lines HT-29 and Caco-2, as well as a primary culture of human renal tubular epithelial cells (HRTEC), induced the phenotypic maturation of pDCs stimulating the production of inflammatory cytokines. By contrast, epithelial cells did not induce any change in the phenotype of conventional or myeloid DCs (cDCs) while significantly stimulated the production of the anti-inflammatory cytokine IL-10. Activation of pDCs by epithelial cells was prevented by Bafilomycin A1, an inhibitor of endosomal acidification as well as by the addition of RNase to the culture medium, suggesting the participation of endosomal TLRs. Interestingly, the cross-talk between both cell populations was shown to be associated to an increased expression of TLR7 and TLR9 by pDCs and the production of LL37 by epithelial cells, an antimicrobial peptide able to bind and transport extracellular nucleic acids into the endosomal compartments. Interestingly, epithelium-activated pDCs impaired the establishment of a productive HIV infection in two susceptible target cells through the stimulation of the production of type I IFNs, highlighting the anti-viral efficiency of this novel activation pathway.
Collapse
Affiliation(s)
| | - Mercedes Cabrini
- Centro Nacional de Referencia para el SIDA, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Federico Remes Lenicov
- Centro Nacional de Referencia para el SIDA, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Juan Sabatté
- Centro Nacional de Referencia para el SIDA, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Ana Ceballos
- Centro Nacional de Referencia para el SIDA, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Carolina Jancic
- IIHEMA, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Silvina Raiden
- IIHEMA, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Matías Ostrowski
- Centro Nacional de Referencia para el SIDA, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Claudia Silberstein
- Laboratorio de Fisiopatogenia, Departamento de Fisiología, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jorge Geffner
- Centro Nacional de Referencia para el SIDA, Facultad de Medicina, Universidad de Buenos Aires, Argentina
- IIHEMA, Academia Nacional de Medicina, Buenos Aires, Argentina
- * E-mail:
| |
Collapse
|
25
|
Sabatte J, Faigle W, Ceballos A, Morelle W, Rodríguez Rodrígues C, Remes Lenicov F, Thépaut M, Fieschi F, Malchiodi E, Fernández M, Arenzana-Seisdedos F, Lortat-Jacob H, Michalski JC, Geffner J, Amigorena S. Semen clusterin is a novel DC-SIGN ligand. J Immunol 2011; 187:5299-309. [PMID: 22013110 DOI: 10.4049/jimmunol.1101889] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The C-type lectin receptor dendritic cell-specific ICAM-3-grabbing nonintegrin (DC-SIGN) is an important player in the recognition of pathogens by dendritic cells. A plethora of pathogens including viruses, bacteria, parasites, and fungi are recognized by DC-SIGN through both mannose and fucose-containing glycans expressed on the pathogen surface. In this study, we identified semen clusterin as a novel DC-SIGN ligand. Semen clusterin, but not serum clusterin, expresses an extreme abundance of fucose-containing blood-type Ags such as Le(x) and Le(y), which are both excellent DC-SIGN ligands. These motifs enable semen clusterin to bind DC-SIGN with very high affinity (K(d) 76 nM) and abrogate the binding of HIV-1 to DC-SIGN. Depletion of clusterin from semen samples, however, did not completely prevent the ability of semen to inhibit the capture of HIV-1 by DC-SIGN, supporting that besides clusterin, semen contains other DC-SIGN ligands. Further studies are needed to characterize these ligands and define their contribution to the DC-SIGN-blocking activity mediated by semen. Clusterin is an enigmatic protein involved in a variety of physiologic and pathologic processes including inflammation, atherosclerosis, and cancer. Our results uncover an unexpected heterogeneity in the glycosylation pattern of clusterin and suggest that the expression of high concentrations of fucose-containing glycans enables semen clusterin to display a unique set of biological functions that might affect the early course of sexually transmitted infectious diseases.
Collapse
Affiliation(s)
- Juan Sabatte
- INSERM U653, Immunité et Cancer, Institut Curie Paris, Paris 75248, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Ceballos A, Lenicov FR, Sabatté J, Rodrígues CR, Cabrini M, Jancic C, Raiden S, Donaldson M, Pasqualini RA, Marin-Briggiler C, Vazquez-Levin M, Capani F, Amigorena S, Geffner J. Spermatozoa capture HIV-1 through heparan sulfate and efficiently transmit the virus to dendritic cells. J Biophys Biochem Cytol 2009. [DOI: 10.1083/jcb1873oia5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
27
|
Ceballos A, Remes Lenicov F, Sabatté J, Rodríguez Rodrígues C, Cabrini M, Jancic C, Raiden S, Donaldson M, Agustín Pasqualini R, Marin-Briggiler C, Vazquez-Levin M, Capani F, Amigorena S, Geffner J. Spermatozoa capture HIV-1 through heparan sulfate and efficiently transmit the virus to dendritic cells. ACTA ACUST UNITED AC 2009; 206:2717-33. [PMID: 19858326 PMCID: PMC2806607 DOI: 10.1084/jem.20091579] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Semen is the main vector for HIV-1 dissemination worldwide. It contains three major sources of infectious virus: free virions, infected leukocytes, and spermatozoa-associated virions. We focused on the interaction of HIV-1 with human spermatozoa and dendritic cells (DCs). We report that heparan sulfate is expressed in spermatozoa and plays an important role in the capture of HIV-1. Spermatozoa-attached virus is efficiently transmitted to DCs, macrophages, and T cells. Interaction of spermatozoa with DCs not only leads to the transmission of HIV-1 and the internalization of the spermatozoa but also results in the phenotypic maturation of DCs and the production of IL-10 but not IL-12p70. At low values of extracellular pH (∼6.5 pH units), similar to those found in the vaginal mucosa after sexual intercourse, the binding of HIV-1 to the spermatozoa and the consequent transmission of HIV-1 to DCs were strongly enhanced. Our observations support the notion that far from being a passive carrier, spermatozoa acting in concert with DCs might affect the early course of sexual transmission of HIV-1 infection.
Collapse
Affiliation(s)
- Ana Ceballos
- Centro Nacional de Referencia para SIDA, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires C1121ABG, Argentina
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Remes Lenicov F, Lemonde S, Czesak M, Mosher TM, Albert PR. Cell-type specific induction of tryptophan hydroxylase-2 transcription by calcium mobilization. J Neurochem 2007; 103:2047-57. [PMID: 17868301 DOI: 10.1111/j.1471-4159.2007.04903.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Alterations in brain serotonin levels are implicated in major depression and are regulated by tryptophan hydroxylase-2 (TPH2). To study its regulation, we measured TPH2 RNA by quantitative RT-PCR in differentiated serotonergic rat raphe RN46A and GH4C1 pituitary cells, which express TPH2. Upon calcium mobilization using KCl (40 mmol/L), TPH2 RNA was rapidly (1 h) and strongly (> 10-fold) induced in differentiated RN46A cells, but not in GH4C1 cells. This effect was blocked by actinomycin D, implicating transcriptional activation. Similarly, calcium ionophore ionomycin induced TPH2 RNA by threefold in RN46A cells. To address the promoter sites involved, the transcription start site was identified and a series of TATA-containing TPH2 promoter-luciferase constructs were analyzed. In differentiated RN46A cells, the TPH2 promoter was induced 2.5-fold by ionomycin, similar to its action on TPH2 RNA. By contrast, ionomycin had no effect on TPH2 promoter activity in GH4C1 cells or TPH2-negative L6 myoblasts. Ionomycin sensitivity was localized to within 88 bp of the start site, containing putative CCATT-enhancer binding protein element, activator protein-1 and -2 (AP-1, AP-2) elements. These results are the first to identify calcium-mediated regulation of the proximal TPH2 promoter as critical for cell-specific TPH2 expression.
Collapse
Affiliation(s)
- Federico Remes Lenicov
- Ottawa Health Research Institute (Neuroscience), University of Ottawa, Ottawa, Ontario, Canada
| | | | | | | | | |
Collapse
|
29
|
Czesak M, Burns AM, Remes Lenicov F, Albert PR. Characterization of rat rostral raphe primary cultures: multiplex quantification of serotonergic markers. J Neurosci Methods 2007; 164:59-67. [PMID: 17498810 DOI: 10.1016/j.jneumeth.2007.04.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2006] [Revised: 03/21/2007] [Accepted: 04/02/2007] [Indexed: 11/27/2022]
Abstract
Previous reports establishing raphe cultures typically yield less than 1% serotonin (5-HT)-positive neurons and are impractical for transcriptional studies. In this study, we have established primary cultures enriched in 5-HT neurons and quantified the proportion of cells expressing serotonergic and non-serotonergic markers. We have also shown the feasibility of using the multiplex real-time PCR technique to measure the relative amounts of RNA for some of these markers. Rostral raphe cells derived from E13-15 rat embryos were cultured for 7 days and analyzed by quantitative immunofluorescence and western blot analysis. In these cultures, approximately 8% of neurons were immunopositive for serotonergic markers (5-HT or tryptophan hydroxylase (TPH)). The percentage of cells labeled for GFAP (glial marker), tyrosine hydroxylase (catecholaminergic), and GAD65/67 (GABAergic) was 5, 1, and 54%, respectively. Transcription factors REST/NRSF and Deaf-1 were present in 9 and 98% of cells, respectively. Multiplex quantitative RT-PCR (Q-PCR) analysis was done for TPH2, 5-HT1A receptor or Deaf-1 RNAs paired with GAPDH RNA as control. Using this approach, standard curves for each RNA were obtained over 200-fold concentration range of dilution with r2 values >0.99. The relative abundances determined by Q-PCR are consistent with the expression of TPH2>Deaf-1>5-HT1A receptor RNA in serotonergic raphe cells. The standard error of TPH2 RNA levels between cultures was <20%, indicating a consistent purity of 5-HT neurons. Thus, we have generated a highly consistent and reproducible model system that is enriched in 5-HT neurons and that will be valuable in future investigation of serotonergic regulation.
Collapse
Affiliation(s)
- Margaret Czesak
- Ottawa Health Research Institute (Neuroscience), Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Canada K1H 8M5
| | | | | | | |
Collapse
|