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Mejía-Ponce PM, Chimal-Muñoz M, Zenteno-Cuevas R, Licona-Cassani C. Draft genome sequences of 12 Mycolicibacterium fortuitum isolates from human pulmonary infections in Veracruz, Mexico. Microbiol Resour Announc 2024; 13:e0102223. [PMID: 38411073 PMCID: PMC11008143 DOI: 10.1128/mra.01022-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/10/2024] [Indexed: 02/28/2024] Open
Abstract
Mycolicibacterium fortuitum, a fast-growing nontuberculous mycobacterium, is a significant pathogen in healthcare-associated infections, encompassing skin, soft tissue, and pulmonary diseases. In this study, we present draft genome sequences from 12 M. fortuitum strains isolated from sputum samples from patients diagnosed with pulmonary infections in Mexico.
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Affiliation(s)
- Paulina M. Mejía-Ponce
- Centro de Biotecnología FEMSA, School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo León, México
| | - Miguel Chimal-Muñoz
- Instituto de Ciencias de la Salud, Universidad Veracruzana, Veracruz, México
| | - Roberto Zenteno-Cuevas
- Instituto de Ciencias de la Salud, Universidad Veracruzana, Veracruz, México
- Instituto de Salud Pública, Universidad Veracruzana, Veracruz, México
| | - Cuauhtémoc Licona-Cassani
- Centro de Biotecnología FEMSA, School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo León, México
- Red Multidisciplinaria de Investigación en Tuberculosis, Ciudad de México, México
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2
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Enriquez-Felix EE, Pérez-Salazar C, Rico-Ruiz JG, Calheiros de Carvalho A, Cruz-Morales P, Villalobos-Escobedo JM, Herrera-Estrella A. Argonaute and Dicer are essential for communication between Trichoderma atroviride and fungal hosts during mycoparasitism. Microbiol Spectr 2024; 12:e0316523. [PMID: 38441469 DOI: 10.1128/spectrum.03165-23] [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: 08/23/2023] [Accepted: 02/17/2024] [Indexed: 04/06/2024] Open
Abstract
Trichoderma species are known for their mycoparasitic activity against phytopathogenic fungi that cause significant economic losses in agriculture. During mycoparasitism, Trichoderma spp. recognize molecules produced by the host fungus and release secondary metabolites and hydrolytic enzymes to kill and degrade the host's cell wall. Here, we explored the participation of the Trichoderma atroviride RNAi machinery in the interaction with six phytopathogenic fungi of economic importance. We determined that both Argonaute-3 and Dicer-2 play an essential role during mycoparasitism. Using an RNA-Seq approach, we identified that perception, detox, and cell wall degradation depend on the T. atroviride-RNAi when interacting with Alternaria alternata, Rhizoctonia solani AG2, and R. solani AG5. Furthermore, we constructed a gene co-expression network that provides evidence of two gene modules regulated by RNAi, which play crucial roles in essential processes during mycoparasitism. In addition, based on small RNA-seq, we conclude that siRNAs regulate amino acid and carbon metabolism and communication during the Trichoderma-host interaction. Interestingly, our data suggest that siRNAs might regulate allorecognition (het) and transport genes in a cross-species manner. Thus, these results reveal a fine-tuned regulation in T. atroviride dependent on siRNAs that is essential during the biocontrol of phytopathogenic fungi, showing a greater complexity of this process than previously established.IMPORTANCEThere is an increasing need for plant disease control without chemical pesticides to avoid environmental pollution and resistance, and the health risks associated with the application of pesticides are increasing. Employing Trichoderma species in agriculture to control fungal diseases is an alternative plant protection strategy that overcomes these issues without utilizing chemical fungicides. Therefore, understanding the biocontrol mechanisms used by Trichoderma species to antagonize other fungi is critical. Although there has been extensive research about the mechanisms involved in the mycoparasitic capability of Trichoderma species, there are still unsolved questions related to how Trichoderma regulates recognition, attack, and defense mechanisms during interaction with a fungal host. In this work, we report that the Argonaute and Dicer components of the RNAi machinery and the small RNAs they process are essential for gene regulation during mycoparasitism by Trichoderma atroviride.
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Affiliation(s)
- Eli Efrain Enriquez-Felix
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav Campus Guanajuato, Irapuato, Guanajuato, Mexico
| | - Camilo Pérez-Salazar
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav Campus Guanajuato, Irapuato, Guanajuato, Mexico
| | - José Guillermo Rico-Ruiz
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav Campus Guanajuato, Irapuato, Guanajuato, Mexico
| | | | - Pablo Cruz-Morales
- Novo Nordisk Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
- The LatAmBio Initiative, Irapuato, Guanajuato, Mexico
| | - José Manuel Villalobos-Escobedo
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav Campus Guanajuato, Irapuato, Guanajuato, Mexico
- The LatAmBio Initiative, Irapuato, Guanajuato, Mexico
- Plant and Microbial Biology Department, University of California, Berkeley, Carlifornia, USA
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, Carlifornia, USA
| | - Alfredo Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav Campus Guanajuato, Irapuato, Guanajuato, Mexico
- The LatAmBio Initiative, Irapuato, Guanajuato, Mexico
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Martínez-Andrade JM, Roberson RW, Riquelme M. A bird's-eye view of the endoplasmic reticulum in filamentous fungi. Microbiol Mol Biol Rev 2024; 88:e0002723. [PMID: 38372526 DOI: 10.1128/mmbr.00027-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024] Open
Abstract
SUMMARYThe endoplasmic reticulum (ER) is one of the most extensive organelles in eukaryotic cells. It performs crucial roles in protein and lipid synthesis and Ca2+ homeostasis. Most information on ER types, functions, organization, and domains comes from studies in uninucleate animal, plant, and yeast cells. In contrast, there is limited information on the multinucleate cells of filamentous fungi, i.e., hyphae. We provide an analytical review of existing literature to categorize different types of ER described in filamentous fungi while emphasizing the research techniques and markers used. Additionally, we identify the knowledge gaps that need to be resolved better to understand the structure-function correlation of ER in filamentous fungi. Finally, advanced technologies that can provide breakthroughs in understanding the ER in filamentous fungi are discussed.
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Affiliation(s)
- Juan M Martínez-Andrade
- Department of Microbiology, Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Baja California, Mexico
| | - Robert W Roberson
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
| | - Meritxell Riquelme
- Department of Microbiology, Centro de Investigación Científica y Educación Superior de Ensenada (CICESE), Ensenada, Baja California, Mexico
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Aguilar-Velázquez D, Rivera Islas I, Romero Tecua G, Valenzuela-Aguilera A. Gentrification and access to housing in Mexico City during 2000 to 2022. Proc Natl Acad Sci U S A 2024; 121:e2314455121. [PMID: 38408232 DOI: 10.1073/pnas.2314455121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 01/10/2024] [Indexed: 02/28/2024] Open
Abstract
We conducted a spatial and temporal analysis of housing patterns in Mexico City by utilizing an extensive database of 16,000 prices for flats and houses, covering the period from 2000 to 2022. Our findings reveal a striking trend: The average housing prices have quadrupled over a 20-y period, without considering inflation. In contrast, the per capita labor income of Mexican citizens has declined relative to inflation. As a result, the average family encountered four times greater challenges in accessing housing in 2015 as compared to 2005. Furthermore, our research demonstrates that areas that have undergone significant gentrification or super-gentrification contribute to a widespread increase in land value on neighboring zones, leading to the emergence of clusters of highly expensive neighborhoods.
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Affiliation(s)
- Daniel Aguilar-Velázquez
- Departamento de Ciencias e Ingeniería de la Computación, Escuela Superior de Cómputo, Instituto Politécnico Nacional, Ciudad de México 07738, México
| | - Iván Rivera Islas
- Facultad de Arquitectura, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos 62209, México
| | - Guillermo Romero Tecua
- Facultad de Arquitectura, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos 62209, México
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Hernández-Guzmán J, Arias CF, López S, Sandoval-Jaime C. Nucleolin-RNA interaction modulates rotavirus replication. J Virol 2024; 98:e0167723. [PMID: 38240590 PMCID: PMC10878083 DOI: 10.1128/jvi.01677-23] [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: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 02/21/2024] Open
Abstract
Rotavirus infection is a leading cause of gastroenteritis in children worldwide; the genome of this virus is composed of 11 segments of dsRNA packed in a triple-layered protein capsid. Here, we investigated the role of nucleolin, a protein with diverse RNA-binding domains, in rotavirus infection. Knocking down the expression of nucleolin in MA104 cells by RNA interference resulted in a remarkable 6.3-fold increase in the production of infectious rhesus rotavirus (RRV) progeny, accompanied by an elevated synthesis of viral mRNA and genome copies. Further analysis unveiled an interaction between rotavirus segment 10 (S10) and nucleolin, potentially mediated by G-quadruplex domains on the viral genome. To determine whether the nucleolin-RNA interaction regulates RRV replication, MA104 cells were transfected with AGRO100, a compound that forms G4 structures and selectively inhibits nucleolin-RNA interactions by blocking the RNA-binding domains. Under these conditions, viral production increased by 1.5-fold, indicating the inhibitory role of nucleolin on the yield of infectious viral particles. Furthermore, G4 sequences were identified in all 11 RRV dsRNA segments, and transfection of oligonucleotides representing G4 sequences in RRV S10 induced a significant increase in viral production. These findings show that rotavirus replication is negatively regulated by nucleolin through the direct interaction with the viral RNAs by sequences forming G4 structures.IMPORTANCEViruses rely on cellular proteins to carry out their replicative cycle. In the case of rotavirus, the involvement of cellular RNA-binding proteins during the replicative cycle is a poorly studied field. In this work, we demonstrate for the first time the interaction between nucleolin and viral RNA of rotavirus RRV. Nucleolin is a cellular protein that has a role in the metabolism of ribosomal rRNA and ribosome biogenesis, which seems to have regulatory effects on the quantity of viral particles and viral RNA copies of rotavirus RRV. Our study adds a new component to the current model of rotavirus replication, where cellular proteins can have a negative regulation on rotavirus replication.
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Affiliation(s)
- Jey Hernández-Guzmán
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Carlos F. Arias
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Susana López
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Carlos Sandoval-Jaime
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
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Mendoza Nava H, Holderied MW, Pirrera A, Groh RMJ. Buckling-induced sound production in the aeroelastic tymbals of Yponomeuta. Proc Natl Acad Sci U S A 2024; 121:e2313549121. [PMID: 38315846 PMCID: PMC10873622 DOI: 10.1073/pnas.2313549121] [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: 08/07/2023] [Accepted: 12/13/2023] [Indexed: 02/07/2024] Open
Abstract
The loss of elastic stability (buckling) can lead to catastrophic failure in the context of traditional engineering structures. Conversely, in nature, buckling often serves a desirable function, such as in the prey-trapping mechanism of the Venus fly trap (Dionaea muscipula). This paper investigates the buckling-enabled sound production in the wingbeat-powered (aeroelastic) tymbals of Yponomeuta moths. The hindwings of Yponomeuta possess a striated band of ridges that snap through sequentially during the up- and downstroke of the wingbeat cycle-a process reminiscent of cellular buckling in compressed slender shells. As a result, bursts of ultrasonic clicks are produced that deter predators (i.e. bats). Using various biological and mechanical characterization techniques, we show that wing camber changes during the wingbeat cycle act as the single actuation mechanism that causes buckling to propagate sequentially through each stria on the tymbal. The snap-through of each stria excites a bald patch of the wing's membrane, thereby amplifying sound pressure levels and radiating sound at the resonant frequencies of the patch. In addition, the interaction of phased tymbal clicks from the two wings enhances the directivity of the acoustic signal strength, suggesting an improvement in acoustic protection. These findings unveil the acousto-mechanics of Yponomeuta tymbals and uncover their buckling-driven evolutionary origin. We anticipate that through bioinspiration, aeroelastic tymbals will encourage novel developments in the context of multi-stable morphing structures, acoustic structural monitoring, and soft robotics.
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Affiliation(s)
- Hernaldo Mendoza Nava
- Bristol Composites Institute, School of Civil, Aerospace & Design Engineering, University of Bristol, BristolBS8 1TR, United Kingdom
| | - Marc W. Holderied
- School of Biological Sciences, University of Bristol, BristolBS8 1TQ, United Kingdom
| | - Alberto Pirrera
- Bristol Composites Institute, School of Civil, Aerospace & Design Engineering, University of Bristol, BristolBS8 1TR, United Kingdom
| | - Rainer M. J. Groh
- Bristol Composites Institute, School of Civil, Aerospace & Design Engineering, University of Bristol, BristolBS8 1TR, United Kingdom
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Garduño-Alanis A, Ángeles-Llerenas A, Sánchez-Zamorano LM, Flores-Luna L, Flores-Aldana M, Torres-Mejía G. Sugar-Sweetened Beverages Consumption and Breast Cancer in Premenopausal and Postmenopausal Women. Cancer Epidemiol Biomarkers Prev 2024; 33:325-332. [PMID: 38085259 DOI: 10.1158/1055-9965.epi-23-0799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/22/2023] [Accepted: 12/08/2023] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND The consumption of sugar-sweetened beverages (SSB), of which Mexico is a large consumer, has been associated with the risk of breast cancer. We assessed the association between SSBs consumption and breast cancer risk in pre- and postmenopausal women. METHODS We performed a multicenter population-based case-control study in Mexico City, Monterrey, and Veracruz. We recruited 1,000 cases and 1,074 controls; all participants were pre- or postmenopausal women between 35 and 69 years of age. Diet before symptoms onset was assessed using a food frequency questionnaire. We conducted a multivariable-adjusted conditional logistic regression analysis stratified by menopausal status. RESULTS For premenopausal women, after adjusting for matching characteristics, total energy intake and all potential confounders, the odds of having breast cancer in women who drank one or more SSBs servings per day showed 1.78 times the odds of those who drank one or fewer SSBs servings per month [OR = 1.78; 95% confidence interval (CI), 1.06-3.01]. For postmenopausal women, the corresponding model was not statistically significant (OR = 1.38, 95% CI, 0.84-2.25). We also observed higher consumption of SSBs among pre- than in postmenopausal women (23.3% and 17.4%, respectively among controls in the highest consumption category (≥1 per day). CONCLUSIONS Our results suggest that SSBs consumption increases the risk of developing breast cancer, particularly in premenopausal women. IMPACT Given the consumption of SSBs, of which Mexico is a large consumer, these results can support public policies to discourage the consumption of SSBs.
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Affiliation(s)
- Adriana Garduño-Alanis
- National Institute of Public Health, National Council of Humanities, Science and Technology, Mexico and Center for Nutrition and Health Research, Cuernavaca, Mexico
- Autonomous University of the State of Mexico, Toluca, Mexico
| | - Angélica Ángeles-Llerenas
- Center for Population Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | | | - Lourdes Flores-Luna
- Center for Population Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | - Mario Flores-Aldana
- Center for Nutrition and Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | - Gabriela Torres-Mejía
- Center for Population Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
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Martín-Manzo MV, Morelos-Castro RM, Munguia-Vega A, Soberanes-Yepiz ML, Cortés-Jacinto E. Transcriptome analysis of reproductive tract tissues of male river prawn Macrobrachium americanum. Mol Biol Rep 2024; 51:259. [PMID: 38302799 DOI: 10.1007/s11033-023-09125-6] [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: 08/21/2023] [Accepted: 12/06/2023] [Indexed: 02/03/2024]
Abstract
BACKGROUND The river prawn, Macrobrachium americanum (M. americanum), is one of the largest prawns of the genus in Latin America and is an amphidromous species distributed along the Pacific coast of America. This prawn has commercial value due to its size and taste, making it a good option for aquaculture production. Its culture has been attempted in ponds and concrete tanks, but no successful technique can still support commercial production. Understanding the mechanisms that regulate reproduction at the molecular level is very important. This knowledge can provide tools for manipulating transcripts, which could increase the number or size of animals in the culture. Our understanding of the mechanism that regulates the reproduction of M. americanum at the molecular level is limited. AIM Perform and analyze the transcriptome assembly of the testes, vas deferens, and terminal ampulla of M. americanum. to provide new molecular information about its reproduction. METHODS AND RESULTS The cDNA library was constructed and sequenced for each tissue to identify novel transcripts. A combined transcriptome with the three tissues was assembled using Trinity software. Unigenes were annotated using BLASTx and BLAST2GO. The transcriptome assembly generated 1,059,447 unigenes, of which 7222 genes had significant hits (e-value < 1 × 10-5) when compared against the Swiss-Prot database. Around 75 genes were related to sex determination, testis development, spermatogenesis, spermiogenesis, fertilization, maturation of testicular cells, neuropeptides, hormones, hormone receptors, and/or embryogenesis. CONCLUSIONS These results provide new molecular information about M. americanum reproduction, representing a reference point for further genetic studies of this species.
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Affiliation(s)
- Miriam Victoria Martín-Manzo
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Playa Palo de Santa Rita Sur, Av. Instituto Politécnico Nacional 195, 23096, La Paz, BCS, Mexico
| | - Rosa María Morelos-Castro
- Centro de Investigaciones Biológicas del Noroeste Tepic, Investigadoras E Investigadores Por México-CONACYT. Unidad Nayarit, Nayarit, Mexico
| | - Adrian Munguia-Vega
- Applied Genomics Lab, Av. Gral. Félix Ortega Aguilar, 23000, La Paz, Baja California Sur, Mexico
- Conservation Genetics Laboratory, The University of Arizona, Tucson, AZ, 85721, USA
| | - Maritza Lourdes Soberanes-Yepiz
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Playa Palo de Santa Rita Sur, Av. Instituto Politécnico Nacional 195, 23096, La Paz, BCS, Mexico
| | - Edilmar Cortés-Jacinto
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Playa Palo de Santa Rita Sur, Av. Instituto Politécnico Nacional 195, 23096, La Paz, BCS, Mexico.
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Bahena-Lopez JP, Vergara L, De la Peña V, Gutiérrez-Gallardo MA, López-Ibargüen P, García JA, Carbajal-Contreras H, Vázquez N, Rincón-Heredia R, Masso F, Bobadilla NA, Castañeda-Bueno M, Ellison DH, Gamba G, Chávez-Canales M. KS-WNK1 is Required for the Renal Response to Extreme Changes in Potassium Intake. Am J Physiol Renal Physiol 2024. [PMID: 38269409 DOI: 10.1152/ajprenal.00235.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 01/03/2024] [Indexed: 01/26/2024] Open
Abstract
KS-WNK1 is an isoform of WNK1 kinase that is predominantly found in the distal convoluted tubule of the kidney. The precise physiological function of KS-WNK1 remains unclear. Some studies suggest that it could play a role in regulating potassium renal excretion by modulating the activity of the Na+-Cl- cotransporter (NCC). However, changes in the potassium diet from normal to high failed to reveal a role for KS-WNK1, but under a normal potassium diet, the expression of KS-WNK1 is negligible. It is only detectable when mice are exposed to a low potassium diet. In this study, we investigated the role of KS-WNK1 in regulating potassium excretion under extreme changes in potassium intake. After following a zero-potassium diet (0KD) for 10 days, KS-WNK1-/- mice had lower plasma levels of K+ and Cl-, while exhibiting higher urinary excretion of Na+, Cl-, and K+ compared to KS-WNK1+/+ mice. After 10 days of 0KD or normal-potassium diet (NKD), all mice were challenged with a high-potassium diet (HKD). Plasma K+ levels markedly increased after the HKD challenge only in mice previously fed with 0KD, regardless of genotype. KSWNK1+/+ mice adapt better to HKD-challenge than KS-WNK1-/- mice after a potassium-retaining state. The difference in the pNCC/NCC ratio between KS-WNK1+/+ and KS-WNK1-/- mice after 0KD and HKD indicates a role for KS-WNK1 in both, NCC phosphorylation and dephosphorylation. These observations show that KS-WNK1 helps the DCT to respond to extreme changes in potassium intake, such as those occurring in wildlife.
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Affiliation(s)
- Jessica Paola Bahena-Lopez
- Instituto de Investigaciones Biomédicas, National Autonomous University of Mexico, Mexico City, Coyoacan, Mexico
| | - Laura Vergara
- Instituto de Investigaciones Biomédicas, National Autonomous University of Mexico, Mexico City, Tlalpan, Mexico
| | - Valeria De la Peña
- Instituto de Investigaciones Biomédicas, National Autonomous University of Mexico, Mexico City, Tlalpan, Mexico
| | - Miguel A Gutiérrez-Gallardo
- Instituto de Investigaciones Biomédicas, National Autonomous University of Mexico, Ciudad de México, CDMX, Mexico
| | - Paulina López-Ibargüen
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Tlalpan, Mexico
| | - Janeth Alejandra García
- Instituto de Investigaciones Biomédicas, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Tlalpan, Mexico
| | - Héctor Carbajal-Contreras
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico city, Mexico, Mexico
| | - Norma Vázquez
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, National Autonomous University of Mexico, Mexico city, Mexico
| | - Ruth Rincón-Heredia
- Instituto de Fisiología Celular, National Autonomous University of Mexico, Mexico City, Mexico
| | - Felipe Masso
- Instituto Nacional de Cardiología Ignacio Chávez, Universidad Nacional Autónoma de México, Col Seccion XVI, Mexico City, Mexico
| | - Norma A Bobadilla
- Department of Nephrology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México, DF, Mexico
| | - María Castañeda-Bueno
- Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico city, Mexico
| | - David H Ellison
- Oregon Clinical & Translational Research Institute, Oregon Health & Science University, Portland, Oregon, United States
| | - Gerardo Gamba
- Nephrology and Mineral Metabolism, National Autonomous University of Mexico, Mexico City, Mexico
| | - María Chávez-Canales
- Instituto de Investigaciones Biomédicas, National Autonomous University of Mexico, Mexico City, Tlalpan, Mexico
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Aguirre-López B, Suaste-Olmos F, Peraza-Reyes L. The peroxisome protein translocation machinery is developmentally regulated in the fungus Podospora anserina. Microbiol Spectr 2024; 12:e0213923. [PMID: 38088545 PMCID: PMC10782954 DOI: 10.1128/spectrum.02139-23] [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: 05/21/2023] [Accepted: 11/11/2023] [Indexed: 01/13/2024] Open
Abstract
IMPORTANCE Sexual reproduction allows eukaryotic organisms to produce genetically diverse progeny. This process relies on meiosis, a reductional division that enables ploidy maintenance and genetic recombination. Meiotic differentiation also involves the renewal of cell functioning to promote offspring rejuvenation. Research in the model fungus Podospora anserina has shown that this process involves a complex regulation of the function and dynamics of different organelles, including peroxisomes. These organelles are critical for meiosis induction and play further significant roles in meiotic development. Here we show that PEX13-a key constituent of the protein conduit through which the proteins defining peroxisome function reach into the organelle-is subject to a developmental regulation that almost certainly involves its selective ubiquitination-dependent removal and that modulates its abundance throughout meiotic development and at different sexual differentiation processes. Our results show that meiotic development involves a complex developmental regulation of the peroxisome protein translocation system.
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Affiliation(s)
- Beatriz Aguirre-López
- Departamento de Bioquímica y Biología Estructural, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Coyoacán, Mexico
| | - Fernando Suaste-Olmos
- Departamento de Bioquímica y Biología Estructural, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Coyoacán, Mexico
| | - Leonardo Peraza-Reyes
- Departamento de Bioquímica y Biología Estructural, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Coyoacán, Mexico
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11
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Muñoz-Arroyo S, Guerrero-Tortolero DA, Hernández-Olalde L, Balart EF. Bidirectional sex-change behavior and physiological aspects in the Gorgeous goby Lythrypnus pulchellus (Gobiidae). J Fish Biol 2024; 104:184-205. [PMID: 37779354 DOI: 10.1111/jfb.15573] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 09/07/2023] [Accepted: 09/26/2023] [Indexed: 10/03/2023]
Abstract
The Gorgeous goby Lythrypnus pulchellus shows extreme sexual plasticity with the bidirectional sex-change ability socially controlled in adults. Therefore, this study describes how the hierarchical status affects hormone synthesis through newborn hormone waste products in water and tests the influence of body size and social dominance establishment in sex reversal duration and direction. The associated changes in behavior and hormone levels are described under laboratory conditions in male-male and female-female pairs of similar and different body sizes, recording the changes until spawning. The status establishment occurred in a relatively shorter time period in male and female pairs of different sizes (1-3 days) compared to those of similar size (3-5 days), but the earlier one did not significantly affect the overall time of sex change (verified by pair spawning). The changes in gonads, hormones, and papilla occurred in sex-changer individuals, but the first one was observed in behavior. Courtship started at 3-5 days in male pairs and from 2 h to 1 day in female pairs of both groups of different and similar sizes. Hormones did not gradually move in the new sexual phenotype direction during the sex-change time course. Nonetheless, estradiol regulated sex change and 11-ketotestosterone enabled bidirectional sex change and was modulated by agonistic interactions. Cortisol is associated with status and gonadal sex change. In general, similar mechanisms underlie sex change in both directions with a temporal change sequence in phases. These results shed new light on sex-change mechanisms. Further studies should be performed to determine whether these localized changes exist in the steroid hormone synthesis along the brain-pituitary gonad axis during social and bidirectional sex changes in L. pulchellus.
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Affiliation(s)
| | | | | | - Eduardo F Balart
- Centro de Investigaciones Biológicas del Noroeste, S.C. (CIBNOR), La Paz, Mexico
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12
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Mora Álvarez MG, Hölzel BK, Bremer B, Wilhelm M, Hell E, Tavacioglu EE, Koch K, Torske A. Effects of web-based mindfulness training on psychological outcomes, attention, and neuroplasticity. Sci Rep 2023; 13:22635. [PMID: 38114554 PMCID: PMC10730881 DOI: 10.1038/s41598-023-48706-0] [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: 06/16/2023] [Accepted: 11/29/2023] [Indexed: 12/21/2023] Open
Abstract
Mindfulness meditation training (MMT) reliably reduces stress and anxiety while also improving attention. The primary aim of this study was to investigate the relationship between MMT, stress and anxiety reduction, and its impact upon improvements in attention on the behavioral and neuronal levels. As a second aim, we sought to explore any relationship between MMT, attention, and modified states of mind such as flow. 118 healthy, meditation-naïve, participants were either assigned to a 31-day, web-based, MMT or an active control, health training (HT). Participants underwent functional magnetic resonance imaging while performing the attention network test (ANT) to assess functional and behavioural attentional changes, diffusion tensor imaging (DTI) to assess microstructural neuronal changes and completed relevant questionnaires to explore changes in psychological outcomes. Results confirmed a reduction in perceived stress and anxiety levels in the MMT group and significant improvements in the overall reaction time during the ANT, albeit no specific effects on the attentional components were observed. No statistically significant changes were found in the HT group. Interestingly, a significant group-by-time interaction was seen in flow experience. Functional data exhibited an increased activity in the superior frontal gyrus, posterior cingulate cortex, and right hippocampus during the alerting condition of the ANT after the MMT; decreased stress and trait anxiety were significantly correlated with the activation in the right hippocampus, and increased flow was also significantly correlated with all the aforementioned areas. DTI data showed increased fractional anisotropy values in the right uncinate fasciculus indicating white matter microarchitecture improvement between the right hippocampus and frontal areas of the brain. This study, therefore, demonstrates the effectiveness of web-based MMT on overall well-being and attentional performance, while also providing insight into the relationship between psychological outcomes, attention, and neuroplastic changes.
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Affiliation(s)
- María Guadalupe Mora Álvarez
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany.
- TUM-Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
| | - Britta Karen Hölzel
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany
- TUM-Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Benno Bremer
- Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Maximilian Wilhelm
- Center for Psychotherapy Research, Heidelberg University Hospital, Heidelberg, Germany
| | - Elena Hell
- Department of Psychology, Ludwig Maximilians Universität München, Munich, Germany
| | - Ebru Ecem Tavacioglu
- TUM-Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Department of Psychology, Ludwig Maximilians Universität München, Munich, Germany
- Department of Psychology, University of Würzburg, Würzburg, Germany
| | - Kathrin Koch
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany
- TUM-Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Graduate School of Systemic Neurosciences, Ludwig Maximilians Universität München, Martinsried, Germany
| | - Alyssa Torske
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany
- TUM-Neuroimaging Center (TUM-NIC), Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Graduate School of Systemic Neurosciences, Ludwig Maximilians Universität München, Martinsried, Germany
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13
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Alonso-del Valle A, Toribio-Celestino L, Quirant A, Pi CT, DelaFuente J, Canton R, Rocha EPC, Ubeda C, Peña-Miller R, San Millan A. Antimicrobial resistance level and conjugation permissiveness shape plasmid distribution in clinical enterobacteria. Proc Natl Acad Sci U S A 2023; 120:e2314135120. [PMID: 38096417 PMCID: PMC10741383 DOI: 10.1073/pnas.2314135120] [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: 08/27/2023] [Accepted: 10/26/2023] [Indexed: 12/18/2023] Open
Abstract
Conjugative plasmids play a key role in the dissemination of antimicrobial resistance (AMR) genes across bacterial pathogens. AMR plasmids are widespread in clinical settings, but their distribution is not random, and certain associations between plasmids and bacterial clones are particularly successful. For example, the globally spread carbapenem resistance plasmid pOXA-48 can use a wide range of enterobacterial species as hosts, but it is usually associated with a small number of specific Klebsiella pneumoniae clones. These successful associations represent an important threat for hospitalized patients. However, knowledge remains limited about the factors determining AMR plasmid distribution in clinically relevant bacteria. Here, we combined in vitro and in vivo experimental approaches to analyze pOXA-48-associated AMR levels and conjugation dynamics in a collection of wild-type enterobacterial strains isolated from hospitalized patients. Our results revealed significant variability in these traits across different bacterial hosts, with Klebsiella spp. strains showing higher pOXA-48-mediated AMR and conjugation frequencies than Escherichia coli strains. Using experimentally determined parameters, we developed a simple mathematical model to interrogate the contribution of AMR levels and conjugation permissiveness to plasmid distribution in bacterial communities. The simulations revealed that a small subset of clones, combining high AMR levels and conjugation permissiveness, play a critical role in stabilizing the plasmid in different polyclonal microbial communities. These results help to explain the preferential association of plasmid pOXA-48 with K. pneumoniae clones in clinical settings. More generally, our study reveals that species- and strain-specific variability in plasmid-associated phenotypes shape AMR evolution in clinically relevant bacterial communities.
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Affiliation(s)
- Aida Alonso-del Valle
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
| | - Laura Toribio-Celestino
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
| | - Anna Quirant
- Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana, Valencia46020, Spain
| | - Carles Tardio Pi
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca62209, México
- Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas, Unidad Académica Yucatán, Universidad Nacional Autónoma de México, Yucatán04510, México
| | - Javier DelaFuente
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
| | - Rafael Canton
- Servicio de Microbiología, Hospital Universitario Ramón y Cajal-Instituto Ramon y Cajal de Investigacion Sanitaria, Madrid28034, Spain
- Centro de Investigación Biológica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid28029, Spain
| | - Eduardo P. C. Rocha
- Institut Pasteur, Université de Paris Cité, CNRS UMR3525, Microbial Evolutionary Genomics, Paris75015, France
| | - Carles Ubeda
- Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana, Valencia46020, Spain
- Centro de Investigación Biológica en Red de Epidemiología y Salud Pública, Instituto de Salud Carlos III, Madrid28029, Spain
| | - Rafael Peña-Miller
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca62209, México
| | - Alvaro San Millan
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Cientificas, Madrid28049, Spain
- Centro de Investigación Biológica en Red de Epidemiología y Salud Pública, Instituto de Salud Carlos III, Madrid28029, Spain
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14
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Cruz S, Godínez FA, Martínez-Alvarado LE, Ramos-Garcia R. Bio-inspired apparatus to produce luminescent cavitation in a rigid walled chamber. PLoS One 2023; 18:e0293839. [PMID: 38096256 PMCID: PMC10721107 DOI: 10.1371/journal.pone.0293839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 10/20/2023] [Indexed: 12/17/2023] Open
Abstract
A mechanical device inspired by the rapid rotational motion of the pistol shrimp plunger has been developed to experimentally study the contraction/expansion dynamics of a gas bubble inside a confined liquid volume and in the vicinity of solid surfaces. The apparatus consists of a limb with a V-shaped end, which fits into a socket forming a cylindrical compression chamber. Air bubbles of different sizes and in different positions inside the chamber were seeded to study their shape evolution in liquids when subjected to pressure pulses induced by the limb closure. By changing the standoff and curvature parameters, as well as the closing power of the limb it was possible to control the dynamical behavior of the cavity. Four stages describing the dynamic behavior of the bubble were found: 1) A slight expansion-contraction stage accompanied by very weak volumetric oscillations. 2) First compression stage. The formation of gas and liquid micro-jets is observed when the vertical symmetry axis of the bubble is initially located outside of the chamber symmetry axis, on the other hand, when there is a coincidence between these axes, the bubble only contracts exhibiting non-spherical shapes, alternating between oblate and prolate spheroidal structures. 3) An expansion stage where the cavity reaches the walls of the chamber exhibiting irregular shapes on its surface. 4) Second compression stage. This process begins when the limb rebounds and stops sealing the chamber allowing a jet of liquid to enter from the fluid medium outside, inducing a very violent collapse accompanied by the emission of light. The proposed technique represents a novel alternative to study the dynamic evolution of bubbles near and on solid boundaries of various geometries. Other attractive features of the apparatus are its low manufacturing cost, simple design and compact size which makes it easily portable.
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Affiliation(s)
- Samuel Cruz
- Departamento de Óptica, Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, México
| | - Francisco A. Godínez
- Instituto de Ingeniería, Unidad de Investigación y Tecnología Aplicadas, Universidad Nacional Autónoma de México, Apodaca, Nuevo León, México
| | | | - Rubén Ramos-Garcia
- Departamento de Óptica, Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, México
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15
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Ramírez-Mendoza R, Ángeles-Argáiz R, Lozano Aguirre-Beltrán LF, Almaraz-Suárez JJ, Hernández-Oaxaca D, Ortiz-Lopez I, Perez-Moreno J. Whole-genome sequence of Pseudomonas yamanorum OLsAu1 isolated from the edible wild ectomycorrhizal mushroom Lactarius sp. section Deliciosi. Microbiol Resour Announc 2023; 12:e0084323. [PMID: 37962344 PMCID: PMC10720402 DOI: 10.1128/mra.00843-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 10/03/2023] [Indexed: 11/15/2023] Open
Abstract
We announce the genome sequencing, assembly, and annotation of the OLsAu1 strain and its taxonomic assignment to Pseudomonas yamanorum. The isolate comes from a wild edible ectomycorrhizal Lactarius sp. mushroom in the Abies forest. There is information regarding the strain's ability to promote plant growth, indicating its potential application in forestry.
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Affiliation(s)
| | - Rodolfo Ángeles-Argáiz
- Red de Manejo Biotecnológico de Recursos, Instituto de Ecología, Xalapa, Veracruz, Mexico
| | | | | | - Diana Hernández-Oaxaca
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de Mexico, Cuernavaca, Morelos, Mexico
- Red de Biodiversidad y Sistemática, Instituto de Ecología, Xalapa, Veracruz, Mexico
| | - Ivette Ortiz-Lopez
- Edafología, Campus Montecillo, Colegio de Postgraduados, Texcoco, Estado de Mexico, Mexico
| | - Jesus Perez-Moreno
- Edafología, Campus Montecillo, Colegio de Postgraduados, Texcoco, Estado de Mexico, Mexico
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16
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Montoya-Ciriaco N, Hereira-Pacheco S, Estrada-Torres A, Dendooven L, Méndez de la Cruz FR, Gómez-Acata ES, Díaz de la Vega-Pérez AH, Navarro-Noya YE. Maternal transmission of bacterial microbiota during embryonic development in a viviparous lizard. Microbiol Spectr 2023; 11:e0178023. [PMID: 37847033 PMCID: PMC10714757 DOI: 10.1128/spectrum.01780-23] [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: 05/09/2023] [Accepted: 09/08/2023] [Indexed: 10/18/2023] Open
Abstract
IMPORTANCE We investigated the presence and diversity of bacteria in the embryos of the viviparous lizard Sceloporus grammicus and their amniotic environment. We compared this diversity to that found in the maternal intestine, mouth, and cloaca. We detected bacterial DNA in the embryos, albeit with a lower bacterial species diversity than found in maternal tissues. Most of the bacterial species detected in the embryos were also found in the mother, although not all of them. Interestingly, we detected a high similarity in the composition of bacterial species among embryos from different mothers. These findings suggest that there may be a mechanism controlling the transmission of bacteria from the mother to the embryo. Our results highlight the possibility that the interaction between maternal bacteria and the embryo may affect the development of the lizards.
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Affiliation(s)
- Nina Montoya-Ciriaco
- Doctorado en Ciencias Biológicas, Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Stephanie Hereira-Pacheco
- Estación Científica La Malinche, Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Arturo Estrada-Torres
- Estación Científica La Malinche, Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Luc Dendooven
- Laboratory of Soil Ecology, CINVESTAV, Mexico City, Mexico
| | - Fausto R. Méndez de la Cruz
- Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Elizabeth Selene Gómez-Acata
- Laboratorio de Interacciones Bióticas, Centro de Investigación en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Aníbal H. Díaz de la Vega-Pérez
- Consejo Nacional de Ciencia, Humanidades y Tecnología-Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala., Tlaxcala, Mexico
| | - Yendi E. Navarro-Noya
- Laboratorio de Interacciones Bióticas, Centro de Investigación en Ciencias Biológicas, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
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17
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Valenzuela-Ponce H, Carbajal C, Soto-Nava M, Tapia-Trejo D, García-Morales C, Murillo W, Lorenzana I, Reyes-Terán G, Ávila-Ríos S. Honduras HIV cohort: HLA class I and CCR5-Δ32 profiles and their associations with HIV disease outcome. Microbiol Spectr 2023; 11:e0161323. [PMID: 37962394 PMCID: PMC10714756 DOI: 10.1128/spectrum.01613-23] [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: 05/09/2023] [Accepted: 10/03/2023] [Indexed: 11/15/2023] Open
Abstract
IMPORTANCE We identify both canonical and novel human leukocyte antigen (HLA)-HIV associations, providing a first step toward improved understanding of HIV immune control among the understudied Honduras Mestizo population. Our results are relevant to understanding the protective or detrimental effects of HLA subtypes in Latin America because their unique HLA diversity poses challenges for designing vaccines against HIV and interpreting results from such vaccine trials. Likewise, the description of the HLA profile in an understudied population that shows a unique HLA immunogenetic background is not only relevant for HIV immunology but also relevant in population genetics, molecular anthropology, susceptibility to other infections, autoimmune diseases, and allograft transplantation.
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Affiliation(s)
- Humberto Valenzuela-Ponce
- CIENI Centro de Investigación en Enfermedades Respiratorias, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Candy Carbajal
- Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - Maribel Soto-Nava
- CIENI Centro de Investigación en Enfermedades Respiratorias, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Daniela Tapia-Trejo
- CIENI Centro de Investigación en Enfermedades Respiratorias, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Claudia García-Morales
- CIENI Centro de Investigación en Enfermedades Respiratorias, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Wendy Murillo
- Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - Ivette Lorenzana
- Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
| | - Gustavo Reyes-Terán
- Comisión Coordinadora de Institutos Nacional de Salud y Hospitales de Alta Especialidad, Secretar ´ıa de Salud, Mexico City, Mexico
| | - Santiago Ávila-Ríos
- CIENI Centro de Investigación en Enfermedades Respiratorias, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
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18
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Freddi L, de la Garza-García JA, Al Dahouk S, Occhialini A, Köhler S. Brucella spp. are facultative anaerobic bacteria under denitrifying conditions. Microbiol Spectr 2023; 11:e0276723. [PMID: 37882559 PMCID: PMC10714718 DOI: 10.1128/spectrum.02767-23] [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: 07/07/2023] [Accepted: 09/06/2023] [Indexed: 10/27/2023] Open
Abstract
IMPORTANCE Respiration is a fundamental and complex process that bacteria use to produce energy. Despite aerobic respiration being the most common, some bacteria make use of a mode of respiration in the absence of oxygen, called anaerobic respiration, which can yield advantages in adaptation to various environmental conditions. Denitrification is part of this respiratory process ensuring higher respiratory flexibility under oxygen depletion. Here, we report for the first time the evidence of anaerobic growth of Brucella spp. under denitrifying conditions, which implies that this genus should be reconsidered as facultative anaerobic. Our study further describes that efficient denitrification is not equally found within the Brucella genus, with atypical species showing a greater ability to denitrify, correlated with higher expression of the genes involved, as compared to classical species.
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Affiliation(s)
- Luca Freddi
- Institut de Recherche en Infectiologie de Montpellier (IRIM), CNRS, University of Montpellier, INSERM, Montpellier, France
| | - Jorge A. de la Garza-García
- Institut de Recherche en Infectiologie de Montpellier (IRIM), CNRS, University of Montpellier, INSERM, Montpellier, France
| | - Sascha Al Dahouk
- German Federal Institute for Risk Assessment, Berlin, Germany
- German Environment Agency, Berlin, Germany
| | - Alessandra Occhialini
- Institut de Recherche en Infectiologie de Montpellier (IRIM), CNRS, University of Montpellier, INSERM, Montpellier, France
| | - Stephan Köhler
- Institut de Recherche en Infectiologie de Montpellier (IRIM), CNRS, University of Montpellier, INSERM, Montpellier, France
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19
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Camargo-Escalante MO, Balcázar-López E, Albores Méndez EM, Winkler R, Herrera-Estrella A. LOX1- and PLP1-dependent transcriptional reprogramming is essential for injury-induced conidiophore development in a filamentous fungus. Microbiol Spectr 2023; 11:e0260723. [PMID: 37943049 PMCID: PMC10714772 DOI: 10.1128/spectrum.02607-23] [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: 06/21/2023] [Accepted: 10/04/2023] [Indexed: 11/10/2023] Open
Abstract
IMPORTANCE In addition to being considered a biocontrol agent, the fungus Trichoderma atroviride is a relevant model for studying mechanisms of response to injury conserved in plants and animals that opens a new landscape in relation to regeneration and cell differentiation mechanisms. Here, we reveal the co-functionality of a lipoxygenase and a patatin-like phospholipase co-expressed in response to wounding in fungi. This pair of enzymes produces oxidized lipids that can function as signaling molecules or oxidative stress signals that, in ascomycetes, induce asexual development. Furthermore, we determined that both genes participate in the regulation of the synthesis of 13-HODE and the establishment of the physiological responses necessary for the formation of reproductive aerial mycelium ultimately leading to asexual development. Our results suggest an injury-induced pathway to produce oxylipins and uncovered physiological mechanisms regulated by LOX1 and PLP1 to induce conidiation, opening new hypotheses for the novo regeneration mechanisms of filamentous fungi.
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Affiliation(s)
- Martín O. Camargo-Escalante
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav, Irapuato, Guanajuato, Mexico
| | - Edgar Balcázar-López
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav, Irapuato, Guanajuato, Mexico
| | - Exsal M. Albores Méndez
- Escuela Militar de Graduados de Sanidad, Universidad del Ejército y Fuerza Aérea Mexicanos, Secretaría de la Defensa Nacional, Mexico City, Mexico
| | - Robert Winkler
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav, Irapuato, Guanajuato, Mexico
| | - Alfredo Herrera-Estrella
- Laboratorio Nacional de Genómica para la Biodiversidad-Unidad de Genómica Avanzada, Cinvestav, Irapuato, Guanajuato, Mexico
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20
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King J, Flores YN, Meneses-León J, Hernández-Salazar S, Robles-Rivera K, Rivera-Paredez B, León-Maldonado L, Hernández-López R, Torres-Ibarra L, Lazcano-Ponce E, Salmerón J. Clinical Performance of hrHPV Primary Screening Using Vaginal versus Cervical Samples to Detect High-grade Intraepithelial Lesions. Cancer Prev Res (Phila) 2023; 16:681-687. [PMID: 37788346 DOI: 10.1158/1940-6207.capr-23-0134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 08/03/2023] [Accepted: 09/29/2023] [Indexed: 10/05/2023]
Abstract
High-risk human papillomavirus (hrHPV) testing is now the most recommended primary method for cervical cancer screening worldwide. Clinician-collected cervical sampling continues to be the main sampling method, but hrHPV vaginal self-sampling is an appealing alternative because of its greater acceptability and potentially higher cost-effectiveness. This study aimed to determine whether hrHPV vaginal self-sampling is comparable with clinician-collected cervical sampling for detecting histologically confirmed high-grade cervical intraepithelial neoplasia (CIN2/3) as part of a cervical cancer screening program in Mexico. We analyzed data from 5,856 women screened during a hrHPV-based screening study. Clinical performance and diagnostic efficiency metrics were estimated for the two sampling methods for the CIN3 and CIN2+ endpoints, using three triage strategies: HPV16/18 genotyping, HPV16/18/33/58 extended genotyping, and HPV16/18/31/33/58 extended genotyping. hrHPV-positivity was found in 801 (13.7%) cervical and 897 (15.3%) vaginal samples. All women with hrHPV-positive samples were referred to colposcopy, which detected 17 total CIN3 cases before considering retrospective triage strategies. Using the HPV16/18/31/33/58 extended genotyping strategy, 245 women had hrHPV-positive cervical samples and 269 had hrHPV-positive vaginal samples. Ten CIN3 cases were detected each among women with hrHPV-positive cervical samples and among those with hrHPV-positive vaginal samples when using this strategy, with no significant differences in sensitivity and specificity observed. We observe that self- and clinician-collected sampling methods are comparable for detecting CIN3 and CIN2+ regardless of the triage strategy used. These findings can help public health officials to develop more cost-effective cervical cancer screening programs that maximize participation. PREVENTION RELEVANCE We found that hrHPV vaginal self-sampling is comparable with hrHPV clinician cervical sampling when using any triage strategy to refer women to colposcopy, so self-sampling is a viable cervical screening method. Therefore, policymakers should consider incorporating self-sampling into cervical screening programs to increase screening coverage and reduce cervical cancer burden. See related Spotlight, p. 649.
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Affiliation(s)
- Jonathan King
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles (UCLA), Los Angeles, California
| | - Yvonne N Flores
- Unidad de Investigación Epidemiológica y en Servicios de Salud, Morelos, Instituto Mexicano del Seguro Social, Colonia Centro, Cuernavaca, México
- Department of Health Policy and Management, Fielding School of Public Health, UCLA, Los Angeles, California
- Center for Cancer Prevention and Control Research and UCLA-Kaiser Permanente Center for Health Equity, Fielding School of Public Health, Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Joacim Meneses-León
- Research Center in Policy, Population and Health, School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Sonia Hernández-Salazar
- Research Center in Policy, Population and Health, School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Karina Robles-Rivera
- Research Center in Policy, Population and Health, School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Berenice Rivera-Paredez
- Research Center in Policy, Population and Health, School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Leith León-Maldonado
- Center for Population Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | | | - Leticia Torres-Ibarra
- Center for Population Health Research, National Institute of Public Health, Cuernavaca, Morelos, Mexico
| | | | - Jorge Salmerón
- Research Center in Policy, Population and Health, School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
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21
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Ferretti LP, Böhi F, Leslie Pedrioli DM, Cheng PF, Ferrari E, Baumgaertner P, Alvarado-Diaz A, Sella F, Cereghetti A, Turko P, Wright RH, De Bock K, Speiser DE, Ferrari R, Levesque MP, Hottiger MO. Combinatorial Treatment with PARP and MAPK Inhibitors Overcomes Phenotype Switch-Driven Drug Resistance in Advanced Melanoma. Cancer Res 2023; 83:3974-3988. [PMID: 37729428 DOI: 10.1158/0008-5472.can-23-0485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 07/07/2023] [Accepted: 09/15/2023] [Indexed: 09/22/2023]
Abstract
Metastatic melanoma is either intrinsically resistant or rapidly acquires resistance to targeted therapy treatments, such as MAPK inhibitors (MAPKi). A leading cause of resistance to targeted therapy is a dynamic transition of melanoma cells from a proliferative to a highly invasive state, a phenomenon called phenotype switching. Mechanisms regulating phenotype switching represent potential targets for improving treatment of patients with melanoma. Using a drug screen targeting chromatin regulators in patient-derived three-dimensional MAPKi-resistant melanoma cell cultures, we discovered that PARP inhibitors (PARPi) restore sensitivity to MAPKis, independent of DNA damage repair pathways. Integrated transcriptomic, proteomic, and epigenomic analyses demonstrated that PARPis induce lysosomal autophagic cell death, accompanied by enhanced mitochondrial lipid metabolism that ultimately increases antigen presentation and sensitivity to T-cell cytotoxicity. Moreover, transcriptomic and epigenetic rearrangements induced by PARP inhibition reversed epithelial-mesenchymal transition-like phenotype switching, which redirected melanoma cells toward a proliferative and MAPKi-sensitive state. The combination of PARP and MAPKis synergistically induced cancer cell death both in vitro and in vivo in patient-derived xenograft models. Therefore, this study provides a scientific rationale for treating patients with melanoma with PARPis in combination with MAPKis to abrogate acquired therapy resistance. SIGNIFICANCE PARP inhibitors can overcome resistance to MAPK inhibitors by activating autophagic cell death and reversing phenotype switching, suggesting that this synergistic combination could help improve the prognosis of patients with melanoma.
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Affiliation(s)
- Lorenza P Ferretti
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland
| | - Flurina Böhi
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland
| | | | - Phil F Cheng
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Elena Ferrari
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland
| | - Petra Baumgaertner
- Department of Oncology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Abdiel Alvarado-Diaz
- Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach, Switzerland
| | - Federica Sella
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Alessandra Cereghetti
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Patrick Turko
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Roni H Wright
- Department of Basic Sciences, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Sant Cugat del Vallès, Barcelona
| | - Katrien De Bock
- Department of Health Sciences and Technology, ETH Zürich, Schwerzenbach, Switzerland
| | - Daniel E Speiser
- Department of Oncology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Roberto Ferrari
- Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Mitchell P Levesque
- Department of Dermatology, University of Zurich, University Hospital Zurich, Schlieren, Switzerland
| | - Michael O Hottiger
- Department of Molecular Mechanisms of Disease, University of Zurich, Zurich, Switzerland
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22
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Garrido-Bazán V, Guzmán-Ocampo DC, Domínguez L, Aguirre J. Filamentous actin destabilization by H 2O 2 favors DnmA aggregation, with crucial roles of cysteines 450 and 776 in mitochondrial and peroxisomal division in Aspergillus nidulans. mBio 2023; 14:e0282223. [PMID: 38014993 PMCID: PMC10746283 DOI: 10.1128/mbio.02822-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 11/07/2023] [Indexed: 11/29/2023] Open
Abstract
IMPORTANCE Mitochondria constitute major sources of H2O2 and other reactive oxygen species in eukaryotic cells. The division of these organelles is crucial for multiple processes in cell biology and relies on highly regulated mechano-GTPases that are oligomerization dependent and belong to the dynamin-related protein family, like A. nidulans DnmA. Our previous work demonstrated that H2O2 induces mitochondrial constriction, division, and remodeling of the outer membrane. Here, we show that H2O2 also induces a DnmA aggregation consistent with higher-order oligomerization and its recruitment to mitochondria. The study of this response uncovered that H2O2 induces the depolymerization and reorganization of actin as well as the critical role that cysteines 450 and 776 play in DnmA function. Our results provide new insights into the mechanisms of reactive oxygen species cell signaling and how they can regulate the dynamics of the actin cytoskeleton and the division of mitochondria and peroxisomes.
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Affiliation(s)
- Verónica Garrido-Bazán
- Instituto de Fisiología Celular, Departamento de Biología Celular y Desarrollo, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Dulce C. Guzmán-Ocampo
- Facultad de Química, Departamento de Fisicoquímica, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Laura Domínguez
- Facultad de Química, Departamento de Fisicoquímica, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Jesús Aguirre
- Instituto de Fisiología Celular, Departamento de Biología Celular y Desarrollo, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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23
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Ortega-Rosas CI, Gutiérrez-Ruacho OG, Brito-Castillo L, Calderón-Ezquerro MC, Guerrero-Guerra C, Amaya-García V. Five-year airborne pollen calendar for a Sonoran Desert city and the relationships with meteorological variability. Int J Biometeorol 2023; 67:1853-1868. [PMID: 37718383 DOI: 10.1007/s00484-023-02546-9] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/04/2023] [Accepted: 08/20/2023] [Indexed: 09/19/2023]
Abstract
Aerobiological studies are still scarce in northwestern Mexico where allergenic pollen have great impacts on health. Current global pollution and climate change problems are closely related to many allergic diseases, enhancing the need to continue researching these issues and improve life quality. This study provides the first Pollen Calendar for Hermosillo, Sonora, México. Airborne pollen were continuously collected for 5 years (2015-2019). The standardized methodology with a Hirst-type spore trap proposed for global aerobiological studies was used. Weather data were also taken from a station located in the city and used to explore correlations between climate and airborne pollen concentrations in different seasons. The most important pollen taxa recorded in air belongs to herbaceous pollen, such as Poaceae, Ambrosia, Asteraceae, Chenopodiaceae-Amaranthaceae, and some shrub trees typical of this arid region, such as Nyctaginaceae, Prosopis, Parkinsonia, and Fabaceae. The most critical herbaceous pollen related to allergies have a long mean pollen season throughout the years, and the most critical periods with high pollen concentration in air occur in two seasons, spring (March-April) and summer-fall (August-October). In these 5 years, the correlation analyses for these two peaks indicate that a link exists between pollen in the air and decreases in precipitation and temperatures, and an increase in relative humidity. An inter-annual variability in pollen concentrations was recorded related to different weather conditions. Although pollen calendars are location-specific, they are useful for future research on biological air quality scenarios in different cities. Using this standardized method for other regions can provide pollen calendars that have been proven clinically important in allergic disease management worldwide.
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Affiliation(s)
- C I Ortega-Rosas
- Cuerpo Académico de Recursos Naturales, Licenciatura en Ecología, Unidad Académica Hermosillo, Universidad Estatal de Sonora, Ley Federal del Trabajo S.N. Col. Apolo. Hermosillo, C.P. 83100, Sonora, Mexico.
| | - O G Gutiérrez-Ruacho
- Cuerpo Académico de Recursos Naturales, Licenciatura en Ecología, Unidad Académica Hermosillo, Universidad Estatal de Sonora, Ley Federal del Trabajo S.N. Col. Apolo. Hermosillo, C.P. 83100, Sonora, Mexico
| | - L Brito-Castillo
- Centro de Investigaciones Biológicas del Noroeste S.C., Guaymas, Sonora, Mexico
| | - M C Calderón-Ezquerro
- Red Mexicana de Aerobiología, Instituto de Ciencias de La Atmósfera Y Cambio Climático, UNAM, Mexico City, Mexico
| | - C Guerrero-Guerra
- Red Mexicana de Aerobiología, Instituto de Ciencias de La Atmósfera Y Cambio Climático, UNAM, Mexico City, Mexico
| | - V Amaya-García
- Cuerpo Académico de Recursos Naturales, Licenciatura en Ecología, Unidad Académica Hermosillo, Universidad Estatal de Sonora, Ley Federal del Trabajo S.N. Col. Apolo. Hermosillo, C.P. 83100, Sonora, Mexico
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24
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Madrigal-Trejo D, Sánchez-Pérez J, Espinosa-Asuar L, Valdivia-Anistro JA, Eguiarte LE, Souza V. A Metagenomic Time-Series Approach to Assess the Ecological Stability of Microbial Mats in a Seasonally Fluctuating Environment. Microb Ecol 2023; 86:2252-2270. [PMID: 37393557 PMCID: PMC10640475 DOI: 10.1007/s00248-023-02231-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 04/23/2023] [Indexed: 07/04/2023]
Abstract
Microbial mats are complex ecological assemblages that have been present in the rock record since the Precambrian and can still be found in extant marginalized environments. These structures are considered highly stable ecosystems. In this study, we evaluate the ecological stability of dome-forming microbial mats in a modern, water-level fluctuating, hypersaline pond located in the Cuatro Ciénegas Basin, Mexico. We conducted metagenomic sampling of the site from 2016 to 2019 and detected 2250 genera of Bacteria and Archaea, with only <20 belonging to the abundant taxa (>1%). The microbial community was dominated by Proteobacteria, Euryarchaeota, Bacteroidetes, Firmicutes, and Cyanobacteria, and was compositionally sensitive to disturbances, leading to high taxonomic replacement even at the phylum level, with a significant increase in Archaea from [Formula: see text]1-4% to [Formula: see text]33% throughout the 2016-2019 study period. Although a core community represented most of the microbial community (>75%), relative abundances shifted significantly between samples, as demonstrated by changes in the abundance of Coleofasciculus from 10.2% in 2017 to 0.05% in 2019. Although functional differences between seasons were subtle, co-occurrence networks suggest differential ecological interactions between the seasons, with the addition of a new module during the rainy season and the potential shift in hub taxa. Functional composition was slightly more similar between samples, but basic processes such as carbohydrate, amino acid, and nucleic acid metabolisms were widely distributed among samples. Major carbon fixation processes included sulfur oxidation, nitrogen fixation, and photosynthesis (both oxygenic and anoxygenic), as well as the Wood-Ljundgahl and Calvin cycles.
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Affiliation(s)
- David Madrigal-Trejo
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional AutÓnoma de México, Mexico City, Mexico
| | - Jazmín Sánchez-Pérez
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional AutÓnoma de México, Mexico City, Mexico
| | - Laura Espinosa-Asuar
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional AutÓnoma de México, Mexico City, Mexico
| | - Jorge A Valdivia-Anistro
- Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Luis E Eguiarte
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional AutÓnoma de México, Mexico City, Mexico
| | - Valeria Souza
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional AutÓnoma de México, Mexico City, Mexico.
- Centro de Estudios del Cuaternario de Fuego-Patagonia y Antártica (CEQUA), Punta Arenas, Chile.
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25
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Gamba G. Thirty years of the NaCl cotransporter: from cloning to physiology and structure. Am J Physiol Renal Physiol 2023; 325:F479-F490. [PMID: 37560773 PMCID: PMC10639029 DOI: 10.1152/ajprenal.00114.2023] [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: 05/02/2023] [Revised: 08/08/2023] [Accepted: 08/08/2023] [Indexed: 08/11/2023] Open
Abstract
The primary structure of the thiazide-sensitive NaCl cotransporter (NCC) was resolved 30 years ago by the molecular identification of the cDNA encoding this cotransporter, from the winter's flounder urinary bladder, following a functional expression strategy. This review outlines some aspects of how the knowledge about thiazide diuretics and NCC evolved, the history of the cloning process, and the expansion of the SLC12 family of electroneutral cotransporters. The diseases associated with activation or inactivation of NCC are discussed, as well as the molecular model by which the activity of NCC is regulated. The controversies in the field are discussed as well as recent publication of the three-dimensional model of NCC obtained by cryo-electron microscopy, revealing not only the amino acid residues critical for Na+ and Cl- translocation but also the residues critical for polythiazide binding to the transporter, opening the possibility for a new era in thiazide diuretic therapy.
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Affiliation(s)
- Gerardo Gamba
- Molecular Physiology Unit, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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26
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Bautista-Crescencio C, Casimiro-Ramos A, Fragoso-Vázquez MJ, Correa-Basurto J, Olano C, Hernández-Rodríguez C, Villa-Tanaca L. Streptomyces albidoflavus Q antifungal metabolites inhibit the ergosterol biosynthesis pathway and yeast growth in fluconazole-resistant Candida glabrata: phylogenomic and metabolomic analyses. Microbiol Spectr 2023; 11:e0127123. [PMID: 37754674 PMCID: PMC10581079 DOI: 10.1128/spectrum.01271-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 08/08/2023] [Indexed: 09/28/2023] Open
Abstract
There is an urgent need to develop new antifungals due to the increasing prevalence of multidrug-resistant fungal infections and the recent emergence of COVID-19-associated candidiasis. A good study model for evaluating new antifungal compounds is Candida glabrata, an opportunistic fungal pathogen with intrinsic resistance to azoles (the most common clinical drugs for treating fungal infections). The aim of the current contribution was to conduct in vitro tests of antifungal metabolites produced by the bacteria Streptomyces albidoflavus Q, identify their molecular structures, and utilize several techniques to provide evidence of their therapeutic target. S. albidoflavus was isolated from maize rhizospheric soil in Mexico and identified by phylogenomic analysis using a 92-gene core. Of the 66 metabolites identified in S. albidoflavus Q by a liquid chromatography-high resolution mass spectrometry (LC-HRMS) metabolomic analysis of the lyophilized supernatant, six were selected by the Way2drug server based on their in silico binding to the likely target, 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGR, the key enzyme in the ergosterol biosynthesis pathway). Molecular modeling studies show a relatively high binding affinity for the CgHMGR enzyme by two secondary metabolites: isogingerenone B (diaryl heptanoid) and notoginsenoside J (polycyclic triterpene). These secondary metabolites were able to inhibit ergosterol synthesis and affect yeast viability in vitro. They also caused alterations in the ultrastructure of the yeast cytoplasmic membrane, as evidenced by transmission electron microscopy. The putative target of isogingerenone B and notoginsenoside J is distinct from that of azole drugs (the most common clinical antifungals). The target for the latter is the lanosterol 14 alpha-demethylase enzyme (Erg11). IMPORTANCE Multidrug resistance has emerged among yeasts of the genus Candida, posing a severe threat to global health. The problem has been exacerbated by the pandemic associated with COVID-19, during which resistant strains of Candida auris and Candida glabrata have been isolated from patients infected with the SARS-CoV-2 virus. To confront this challenge, the World Health Organization has invoked scientists to search for new antifungals with alternative molecular targets. This study identified 66 metabolites produced by the bacteria Streptomyces albidoflavus Q, 6 of which had promising properties for potential antifungal activity. The metabolites were tested in vitro as inhibitors of ergosterol synthesis and C. glabrata growth, with positive results. They were also found to damage the cytoplasmic membrane of the fungus. The corresponding molecular structures and their probable therapeutic target were established. The target is apparently distinct from that of azole drugs.
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Affiliation(s)
- Celia Bautista-Crescencio
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prolongación de Carpio y Plan de Ayala, Casco de Santo Tomás, Ciudad de México, Ciudad de México, México
| | - Arturo Casimiro-Ramos
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prolongación de Carpio y Plan de Ayala, Casco de Santo Tomás, Ciudad de México, Ciudad de México, México
| | - M. Jonathan Fragoso-Vázquez
- Departamento de Química Orgánica, Escuela Nacional de Ciencias, Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala, Col. Casco de Santo Tomás, Ciudad de México, México
| | - José Correa-Basurto
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation), SEPI-Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Salvador Díaz Mirón, Casco de Santo Tomás, Ciudad de México, México
| | - Carlos Olano
- Departamento de Biología Funcional, Universidad de Oviedo, Oviedo, Spain
| | - César Hernández-Rodríguez
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prolongación de Carpio y Plan de Ayala, Casco de Santo Tomás, Ciudad de México, Ciudad de México, México
| | - Lourdes Villa-Tanaca
- Departamento de Microbiología, Laboratorio de Biología Molecular de Bacterias y Levaduras, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Prolongación de Carpio y Plan de Ayala, Casco de Santo Tomás, Ciudad de México, Ciudad de México, México
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27
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Rojas-Vargas J, Muriel-Millán LF, Pardo-López L. Draft genome sequence of Pseudomonas sp. GOM6, a lipolytic strain isolated from seawater of the Gulf of Mexico. Microbiol Resour Announc 2023; 12:e0034823. [PMID: 37470493 PMCID: PMC10508103 DOI: 10.1128/mra.00348-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 06/19/2023] [Indexed: 07/21/2023] Open
Abstract
We report here the draft genome sequence of a marine Pseudomonas sp. novel species with lipase activity isolated from a deep-sea water sample of the Gulf of Mexico. The genome consists of 4.3 Mbp in 48 contigs.
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28
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Moreno-Manjón J, Castillo-Ramírez S, Jolley KA, Maiden MCJ, Gayosso-Vázquez C, Fernández-Vázquez JL, Mateo-Estrada V, Giono-Cerezo S, Alcántar-Curiel MD. Acinetobacter baumannii IC2 and IC5 Isolates with Co-Existing blaOXA-143-like and blaOXA-72 and Exhibiting Strong Biofilm Formation in a Mexican Hospital. Microorganisms 2023; 11:2316. [PMID: 37764160 PMCID: PMC10536109 DOI: 10.3390/microorganisms11092316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/03/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
Acinetobacter baumannii is an opportunistic pathogen responsible for healthcare-associated infections (HAIs) and outbreaks. Antimicrobial resistance mechanisms and virulence factors allow it to survive and spread in the hospital environment. However, the molecular mechanisms of these traits and their association with international clones are frequently unknown in low- and middle-income countries. Here, we analyze the phenotype and genotype of seventy-six HAIs and outbreak-causing A. baumannii isolates from a Mexican hospital over ten years, with special attention to the carbapenem resistome and biofilm formation. The isolates belonged to the global international clone (IC) 2 and the Latin America endemic IC5 and were predominantly extensively drug-resistant (XDR). Oxacillinases were identified as a common source of carbapenem resistance. We noted the presence of the blaOXA-143-like family (not previously described in Mexico), the blaOXA-72 and the blaOXA-398 found in both ICs. A low prevalence of efflux pump overexpression activity associated with carbapenem resistance was observed. Finally, strong biofilm formation was found, and significant biofilm-related genes were identified, including bfmRS, csuA/BABCDE, pgaABCD and ompA. This study provides a comprehensive profile of the carbapenem resistome of A. baumannii isolates belonging to the same pulse type, along with their significant biofilm formation capacity. Furthermore, it contributes to a better understanding of their role in the recurrence of infection and the endemicity of these isolates in a Mexican hospital.
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Affiliation(s)
- Julia Moreno-Manjón
- Laboratorio de Infectología, Microbiología e Inmunología Clínica, Unidad de Investigación en Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 06720, Mexico; (J.M.-M.); (C.G.-V.); (J.L.F.-V.)
- Laboratorio de Bacteriología Médica, Posgrado en Ciencias Quimicobiológicas, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México 11350, Mexico
| | - Santiago Castillo-Ramírez
- Programa de Genómica Evolutiva, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca 62209, Mexico; (S.C.-R.); (V.M.-E.)
| | - Keith A. Jolley
- Department of Biology, University of Oxford, Oxford OX1 3SZ, UK; (K.A.J.); (M.C.J.M.)
| | - Martin C. J. Maiden
- Department of Biology, University of Oxford, Oxford OX1 3SZ, UK; (K.A.J.); (M.C.J.M.)
| | - Catalina Gayosso-Vázquez
- Laboratorio de Infectología, Microbiología e Inmunología Clínica, Unidad de Investigación en Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 06720, Mexico; (J.M.-M.); (C.G.-V.); (J.L.F.-V.)
| | - José Luis Fernández-Vázquez
- Laboratorio de Infectología, Microbiología e Inmunología Clínica, Unidad de Investigación en Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 06720, Mexico; (J.M.-M.); (C.G.-V.); (J.L.F.-V.)
| | - Valeria Mateo-Estrada
- Programa de Genómica Evolutiva, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca 62209, Mexico; (S.C.-R.); (V.M.-E.)
| | - Silvia Giono-Cerezo
- Laboratorio de Bacteriología Médica, Posgrado en Ciencias Quimicobiológicas, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México 11350, Mexico
| | - María Dolores Alcántar-Curiel
- Laboratorio de Infectología, Microbiología e Inmunología Clínica, Unidad de Investigación en Medicina Experimental, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México 06720, Mexico; (J.M.-M.); (C.G.-V.); (J.L.F.-V.)
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García-Andrade AB, Tedesco PA, Carvajal-Quintero JD, Arango A, Villalobos F. Same process, different patterns: pervasive effect of evolutionary time on species richness in freshwater fishes. Proc Biol Sci 2023; 290:20231066. [PMID: 37700646 PMCID: PMC10498035 DOI: 10.1098/rspb.2023.1066] [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: 05/12/2023] [Accepted: 08/18/2023] [Indexed: 09/14/2023] Open
Abstract
Tropical lands harbour the highest number of species, resulting in the ubiquitous latitudinal diversity gradient (LDG). However, exceptions to this pattern have been observed in some taxa, explained by the interaction between the evolutionary histories and environmental factors that constrain species' physiological and ecological requirements. Here, we applied a deconstruction approach to map the detailed species richness patterns of Actinopterygian freshwater fishes at the class and order levels and to disentangle their drivers using geographical ranges and a phylogeny, comprising 77% (12 557) of all described species. We jointly evaluated seven evolutionary and ecological hypotheses posited to explain the LDG: diversification rate, time for speciation, species-area relationship, environmental heterogeneity, energy, temperature seasonality and past temperature stability. We found distinct diversity gradients across orders, including expected, bimodal and inverse LDGs. Despite these differences, the positive effect of evolutionary time explained patterns for all orders, where species-rich regions are inhabited by older species compared to species-poor regions. Overall, the LDG of each order has been shaped by a unique combination of factors, highlighting the importance of performing a joint evaluation of evolutionary, historical and ecological factors at different taxonomic levels to reach a comprehensive understanding on the causes driving global species richness patterns.
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Affiliation(s)
- Ana Berenice García-Andrade
- Laboratorio de Macroecología Evolutiva, Red de Biología Evolutiva, Instituto de Ecología, A.C. Carretera antigua a Coatepec 351, El Haya, 91070 Xalapa, Veracruz, México
| | - Pablo A. Tedesco
- UMR 5174 EDB—Evolution & Diversité Biologique, Institut de Recherche pour le Développement, Université Paul Sabatier - Bat. 4R1, 118 route de Narbonne, 31062 Toulouse cedex 4, France
| | - Juan D. Carvajal-Quintero
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstr. 4, D-04103 Leipzig, Germany
| | - Axel Arango
- Laboratorio de Macroecología Evolutiva, Red de Biología Evolutiva, Instituto de Ecología, A.C. Carretera antigua a Coatepec 351, El Haya, 91070 Xalapa, Veracruz, México
| | - Fabricio Villalobos
- Laboratorio de Macroecología Evolutiva, Red de Biología Evolutiva, Instituto de Ecología, A.C. Carretera antigua a Coatepec 351, El Haya, 91070 Xalapa, Veracruz, México
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Ykema M, Ye K, Xun M, Harper J, Betancourt-Solis MA, Arias CF, McNew JA, Tao YJ. Human astrovirus capsid protein releases a membrane lytic peptide upon trypsin maturation. J Virol 2023; 97:e0080223. [PMID: 37504573 PMCID: PMC10506485 DOI: 10.1128/jvi.00802-23] [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: 05/26/2023] [Accepted: 06/13/2023] [Indexed: 07/29/2023] Open
Abstract
The human astrovirus (HAstV) is a non-enveloped, single-stranded RNA virus that is a common cause of gastroenteritis. Most non-enveloped viruses use membrane disruption to deliver the viral genome into a host cell after virus uptake. The virus-host factors that allow for HAstV cell entry are currently unknown but thought to be associated with the host-protease-mediated viral maturation. Using in vitro liposome disruption analysis, we identified a trypsin-dependent lipid disruption activity in the capsid protein of HAstV serotype 8. This function was further localized to the P1 domain of the viral capsid core, which was both necessary and sufficient for membrane disruption. Site-directed mutagenesis identified a cluster of four trypsin cleavage sites necessary to retain the lipid disruption activity, which is likely attributed to a short stretch of sequence ending at arginine 313 based on mass spectrometry of liposome-associated peptides. The membrane disruption activity was conserved across several other HAstVs, including the emerging VA2 strain, and effective against a wide range of lipid identities. This work provides key functional insight into the protease maturation process essential to HAstV infectivity and presents a method to investigate membrane penetration by non-enveloped viruses in vitro. IMPORTANCE Human astroviruses (HAstVs) are an understudied family of viruses that cause mild gastroenteritis but have recent cases associated with a more severe neural pathogenesis. Many important elements of the HAstV life cycle are not well understood, and further elucidating them can help understand the various forms of HAstV pathogenesis. In this study, we utilized an in vitro liposome-based assay to describe and characterize a previously unreported lipid disruption activity. This activity is dependent on the protease cleavage of key sites in HAstV capsid core and can be controlled by site-directed mutagenesis. Our group observed this activity in multiple strains of HAstV and in multiple lipid conditions, indicating this may be a conserved activity across the AstV family. The discovery of this function provides insight into HAstV cellular entry, pathogenesis, and a possible target for future therapeutics.
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Affiliation(s)
- Matthew Ykema
- Department of BioSciences, Rice University, Houston, Texas, USA
| | - Kai Ye
- Department of BioSciences, Rice University, Houston, Texas, USA
| | - Meng Xun
- Department of BioSciences, Rice University, Houston, Texas, USA
| | - Justin Harper
- Department of BioSciences, Rice University, Houston, Texas, USA
| | | | - Carlos F. Arias
- Departamento de Genética del Desarrollo y Fisiología Molecular, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - James A. McNew
- Department of BioSciences, Rice University, Houston, Texas, USA
| | - Yizhi Jane Tao
- Department of BioSciences, Rice University, Houston, Texas, USA
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Larios Serrato V, Meza B, Gonzalez-Torres C, Gaytan-Cervantes J, González Ibarra J, Santacruz Tinoco CE, Anguiano Hernández YM, Martínez Miguel B, Cázarez Cortazar A, Sarquiz Martínez B, Alvarado Yaah JE, Mendoza Pérez AR, Palma Herrera JJ, García Soto LM, Chávez Rojas AI, Bravo Mateos G, Samano Marquez G, Grajales Muñiz C, Torres J. Diversity, composition, and networking of saliva microbiota distinguish the severity of COVID-19 episodes as revealed by an analysis of 16S rRNA variable V1-V3 region sequences. mSystems 2023; 8:e0106222. [PMID: 37310423 PMCID: PMC10470033 DOI: 10.1128/msystems.01062-22] [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: 11/02/2022] [Accepted: 04/17/2023] [Indexed: 06/14/2023] Open
Abstract
Studies on the role of the oral microbiome in SARS-CoV-2 infection and severity of the disease are limited. We aimed to characterize the bacterial communities present in the saliva of patients with varied COVID-19 severity to learn if there are differences in the characteristics of the microbiome among the clinical groups. We included 31 asymptomatic subjects with no previous COVID-19 infection or vaccination; 176 patients with mild respiratory symptoms, positive or negative for SARS-CoV-2 infection; 57 patients that required hospitalization because of severe COVID-19 with oxygen saturation below 92%, and 18 fatal cases of COVID-19. Saliva samples collected before any treatment were tested for SARS-CoV-2 by PCR. Oral microbiota in saliva was studied by amplification and sequencing of the V1-V3 variable regions of 16S gene using an Illumina MiSeq platform. We found significant changes in diversity, composition, and networking in saliva microbiota of patients with COVID-19, as well as patterns associated with severity of disease. The presence or abundance of several commensal species and opportunistic pathogens were associated with each clinical stage. Patterns of networking were also found associated with severity of disease: a highly regulated bacterial community (normonetting) was found in healthy people whereas poorly regulated populations (disnetting) were characteristic of severe cases. Characterization of microbiota in saliva may offer important clues in the pathogenesis of COVID-19 and may also identify potential markers for prognosis in the severity of the disease. IMPORTANCE SARS-CoV-2 infection is the most severe pandemic of humankind in the last hundred years. The outcome of the infection ranges from asymptomatic or mild to severe and even fatal cases, but reasons for this remain unknown. Microbes normally colonizing the respiratory tract form communities that may mitigate the transmission, symptoms, and severity of viral infections, but very little is known on the role of these microbial communities in the severity of COVID-19. We aimed to characterize the bacterial communities in saliva of patients with different severity of COVID-19 disease, from mild to fatal cases. Our results revealed clear differences in the composition and in the nature of interactions (networking) of the bacterial species present in the different clinical groups and show community-patterns associated with disease severity. Characterization of the microbial communities in saliva may offer important clues to learn ways COVID-19 patients may suffer from different disease severities.
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Affiliation(s)
- Violeta Larios Serrato
- Departamento de Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México, Mexico
| | - Beatriz Meza
- Universidad Autónoma de Baja California Sur, La Paz, Baja California Sur, Mexico
- Centro de Investigaciones Biológicas del Noroeste SC, La Paz, Baja California Sur, Mexico
- Unidad de Investigación Médica en Enfermedades Infecciosas, UMAE Pediatría, Centro Médico Nacional SXXI, IMSS, Torreón, Mexico
| | | | - Javier Gaytan-Cervantes
- Laboratorio de Secuenciación, División de Desarrollo de la Investigación, IMSS, Torreón, Mexico
| | - Joaquín González Ibarra
- División de Desarrollo de la Investigación en Salud, Coordinación de Investigación en Salud, IMSS, Torreón, Mexico
| | - Clara Esperanza Santacruz Tinoco
- División de Laboratorios Especializados, Coordinación de Calidad de Insumos y Laboratorios Especializados, IMSS, Torreón, Mexico
| | - Yu-Mei Anguiano Hernández
- División de Laboratorios Especializados, Coordinación de Calidad de Insumos y Laboratorios Especializados, IMSS, Torreón, Mexico
| | - Bernardo Martínez Miguel
- División de Laboratorios Especializados, Coordinación de Calidad de Insumos y Laboratorios Especializados, IMSS, Torreón, Mexico
| | - Allison Cázarez Cortazar
- División de Laboratorios Especializados, Coordinación de Calidad de Insumos y Laboratorios Especializados, IMSS, Torreón, Mexico
| | - Brenda Sarquiz Martínez
- División de Laboratorios Especializados, Coordinación de Calidad de Insumos y Laboratorios Especializados, IMSS, Torreón, Mexico
| | - Julio Elias Alvarado Yaah
- División de Laboratorios Especializados, Coordinación de Calidad de Insumos y Laboratorios Especializados, IMSS, Torreón, Mexico
| | | | | | | | | | | | | | | | - Javier Torres
- Unidad de Investigación Médica en Enfermedades Infecciosas, UMAE Pediatría, Centro Médico Nacional SXXI, IMSS, Torreón, Mexico
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García-Espinoza F, García MJ, Quesada-Moraga E, Yousef-Yousef M. Entomopathogenic Fungus-Related Priming Defense Mechanisms in Cucurbits Impact Spodoptera littoralis (Boisduval) Fitness. Appl Environ Microbiol 2023; 89:e0094023. [PMID: 37439674 PMCID: PMC10467339 DOI: 10.1128/aem.00940-23] [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: 06/06/2023] [Accepted: 06/25/2023] [Indexed: 07/14/2023] Open
Abstract
Entomopathogenic fungi (EPF) exhibit direct and indirect mechanisms to increase plant resistance against biotic and abiotic stresses. Plant responses to these stresses are interconnected by common regulators such as ethylene (ET), which is involved in both iron (Fe) deficiency and induced systemic resistance responses. In this work, the roots of cucurbit seedlings were primed with Metarhizium brunneum (EAMa 01/58-Su strain), and relative expression levels of 18 genes related to ethylene (ET), jasmonic acid (JA), and salicylic acid (SA) synthesis, as well as pathogen-related (PR) protein genes, were studied by reverse transcription-quantitative PCR (qRT-PCR). Effects of priming on Spodoptera littoralis were studied by feeding larvae for 15 days with primed and control plants. Genes showed upregulation in studied species; however, the highest relative expression was observed in roots and shoots of plants with Fe deficiency, demonstrating the complexity and the overlapping degree of the regulatory network. EIN2 and EIN3 should be highlighted; both are key genes of the ET transduction pathway that enhanced their expression levels up to eight and four times, respectively, in shoots of primed cucumber. Also, JA and SA synthesis and PR genes showed significant upregulation during the observation period (e.g., the JA gene LOX1 increased 506 times). Survival and fitness of S. littoralis were affected with significant effects on mortality of larvae fed on primed plants versus controls, length of the larval stage, pupal weight, and the percentage of abnormal pupae. These results highlight the role of the EAMa 01/58-Su strain in the induction of resistance, which could be translated into direct benefits for plant development. IMPORTANCE Entomopathogenic fungi are multipurpose microorganisms with direct and indirect effects on insect pests. Also, EPF provide multiple benefits to plants by solubilizing minerals and facilitating nutrient acquisition. A very interesting and novel effect of these fungi is the enhancement of plant defense systems by inducing systematic and acquired resistance. However, little is known about this function. This study sheds light on the molecular mechanisms involved in cucurbits plants' defense activation after being primed by the EPF M. brunneum. Furthermore, the subsequent effects on the fitness of the lepidopteran pest S. littoralis are shown. In this regard, a significant upregulation was recorded for the genes that regulate JA, SA, and ET pathways. This increased expression of defense genes caused lethal and sublethal effects on S. littoralis. This could be considered an added value for the implementation of EPF in integrated pest management programs.
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Affiliation(s)
- F. García-Espinoza
- Departamento de Agronomía (DAUCO) María de Maeztu Unit of Excellence 2021–2023, Campus de Rabanales, Universidad de Córdoba, Córdoba, Spain
- Departamento de Parasitología. Universidad Autónoma Agraria Antonio Narro – Unidad Laguna, Torreón, Coahuila, Mexico
| | - M. J. García
- Departamento de Agronomía (DAUCO) María de Maeztu Unit of Excellence 2021–2023, Campus de Rabanales, Universidad de Córdoba, Córdoba, Spain
| | - E. Quesada-Moraga
- Departamento de Agronomía (DAUCO) María de Maeztu Unit of Excellence 2021–2023, Campus de Rabanales, Universidad de Córdoba, Córdoba, Spain
| | - M. Yousef-Yousef
- Departamento de Agronomía (DAUCO) María de Maeztu Unit of Excellence 2021–2023, Campus de Rabanales, Universidad de Córdoba, Córdoba, Spain
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Valenzuela-García LI, Alarcón-Herrera MT, Ayala-García VM, Barraza-Salas M, Salas-Pacheco JM, Díaz-Valles JF, Pedraza-Reyes M. Design of a Whole-Cell Biosensor Based on Bacillus subtilis Spores and the Green Fluorescent Protein To Monitor Arsenic. Microbiol Spectr 2023; 11:e0043223. [PMID: 37284752 PMCID: PMC10433799 DOI: 10.1128/spectrum.00432-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023] Open
Abstract
A green fluorescent protein (GFP)-based whole-cell biosensor (WCB-GFP) for monitoring arsenic (As) was developed in Bacillus subtilis. To this end, we designed a reporter gene fusion carrying the gfpmut3a gene under the control of the promoter/operator region of the arsenic operon (Pars::gfpmut3a) in the extrachromosomal plasmid pAD123. This construct was transformed into B. subtilis 168, and the resultant strain was used as a whole-cell biosensor (BsWCB-GFP) for the detection of As. The BsWCB-GFP was specifically activated by inorganic As(III) and As(V), but not by dimethylarsinic acid [DMA(V)], and exhibited high tolerance to the noxious effects of arsenic. Accordingly, after 12 h exposure, B. subtilis cells carrying the Pars::gfpmut3a fusion exhibited 50 and 90% lethal doses (LD50 and LD90) to As(III) of 0.89 mM and As 1.71 mM, respectively. Notably, dormant spores from the BsWCB-GFP were able to report the presence of As(III) in a concentration range from 0.1 to 1,000 μM 4 h after the onset of germination. In summary, the specificity and high sensitivity for As, as well as its ability to proliferate under concentrations of the metal that are considered toxic in water and soil, makes the B. subtilis biosensor developed here a potentially important tool for monitoring environmental samples contaminated with this pollutant. IMPORTANCE Arsenic (As) contamination of groundwater is associated with serious worldwide health risks. Detection of this pollutant at concentrations that are established as permissible for water consumption by WHO is a matter of significant interest. Here, we report the generation of a whole-cell biosensor for As detection in the Gram-positive spore former B. subtilis. This biosensor reports the presence of inorganic As, activating the expression of the green fluorescent protein (GFP) under the control of the promoter/operator of the ars operon. The biosensor can proliferate under concentrations of As(III) that are considered toxic in water and soil and detect this ion at concentrations as low as 0.1 μM. Of note, spores of the Pars-GFP biosensor exhibited the ability to detect As(III) following germination and outgrowth. Therefore, this novel tool has the potential to be directly applied to monitor As contamination in environmental samples.
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Affiliation(s)
- Luz I. Valenzuela-García
- Department of Sustainable Engineering, Advanced Materials Research Center (CIMAV), Arroyo Seco, Durango, Mexico
| | | | - Víctor M. Ayala-García
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Durango, Durango, Mexico
| | - Marcelo Barraza-Salas
- Facultad de Ciencias Químicas, Universidad Juárez del Estado de Durango, Durango, Durango, Mexico
| | - José Manuel Salas-Pacheco
- Instituto de Investigación Científica, Universidad Juárez del Estado de Durango, Durango, Durango, Mexico
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Qiu J, Engelbrektson A, Song L, Park J, Murugan V, Williams S, Chung Y, Pompa-Mera EN, Sandoval-Ramirez JL, Mata-Marin JA, Gaytan-Martinez J, Troiani E, Sanguinetti M, Roncada P, Urbani A, Moretti G, Torres J, LaBaer J. Comparative Analysis of Antimicrobial Antibodies between Mild and Severe COVID-19. Microbiol Spectr 2023; 11:e0469022. [PMID: 37278651 PMCID: PMC10433851 DOI: 10.1128/spectrum.04690-22] [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: 11/16/2022] [Accepted: 05/17/2023] [Indexed: 06/07/2023] Open
Abstract
Patients with 2019 coronavirus disease (COVID-19) exhibit a broad spectrum of clinical presentations. A person's antimicrobial antibody profile, as partially shaped by past infection or vaccination, can reflect the immune system health that is critical to control and resolve the infection. We performed an explorative immunoproteomics study using microbial protein arrays displaying 318 full-length antigens from 77 viruses and 3 bacteria. We compared antimicrobial antibody profiles between 135 patients with mild COVID-19 disease and 215 patients with severe disease in 3 independent cohorts from Mexico and Italy. Severe disease patients were older with higher prevalence of comorbidities. We confirmed that severe disease patients elicited a stronger anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) response. We showed that antibodies against HCoV-229E and HcoV-NL63 but not against HcoV-HKU1 and HcoV-OC43 were also higher in those who had severe disease. We revealed that for a set of IgG and IgA antibodies targeting coronaviruses, herpesviruses, and other respiratory viruses, a subgroup of patients with the highest reactivity levels had a greater incidence of severe disease compared to those with mild disease across all three cohorts. On the contrary, fewer antibodies showed consistent greater prevalence in mild disease in all 3 cohorts. IMPORTANCE The clinical presentations of COVID-19 range from asymptomatic to critical illness that may lead to intensive care or even death. The health of the immune system, as partially shaped by past infections or vaccinations, is critical to control and resolve the infection. Using an innovative protein array platform, we surveyed antibodies against hundreds of full-length microbial antigens from 80 different viruses and bacteria in COVID-19 patients from different geographic regions with mild or severe disease. We not only confirmed the association of severe COVID-19 disease with higher reactivity of antibody responses to SARS-CoV-2 but also uncovered known and novel associations with antibody responses against herpesviruses and other respiratory viruses. Our study represents a significant step forward in understanding the factors contributing to COVID-19 disease severity. We also demonstrate the power of comprehensive antimicrobial antibody profiling in deciphering risk factors for severe COVID-19. We anticipate that our approach will have broad applications in infectious diseases.
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Affiliation(s)
- Ji Qiu
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Anna Engelbrektson
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Lusheng Song
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Jin Park
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Vel Murugan
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Stacy Williams
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
| | - Yunro Chung
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
- College of Health Solutions, Arizona State University, Phoenix, Arizona, USA
| | - Ericka Nelly Pompa-Mera
- Unidad de Investigación Médica en Enfermedades Infecciosas y Parasitarias, UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
- Hospital de Infectología, CMN “La Raza”, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Jose Antonio Mata-Marin
- Hospital de Infectología, CMN “La Raza”, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Jesus Gaytan-Martinez
- Hospital de Infectología, CMN “La Raza”, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Maurizio Sanguinetti
- Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Paola Roncada
- Department of Health Sciences, University Magna Græcia of Catanzaro, Catanzaro, Italy
| | - Andrea Urbani
- Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giacomo Moretti
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Javier Torres
- Unidad de Investigación Médica en Enfermedades Infecciosas y Parasitarias, UMAE Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Joshua LaBaer
- Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, Arizona, USA
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Fuentes-Romero R, Velázquez-Villegas LA, Vasquez-Reyes S, Pérez-Jiménez B, Domínguez Velázquez ZN, Sánchez-Tapia M, Vargas-Castillo A, Tobón-Cornejo S, López-Barradas AM, Mendoza V, Torres N, López-Casillas F, Tovar AR. Genistein-mediated thermogenesis and white-to-beige adipocyte differentiation involve transcriptional activation of cAMP response elements in the Ucp1 promoter. FASEB J 2023; 37:e23079. [PMID: 37410022 DOI: 10.1096/fj.202300139rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 06/20/2023] [Accepted: 06/23/2023] [Indexed: 07/07/2023]
Abstract
Genistein is an isoflavone present in soybeans and is considered a bioactive compound due to its widely reported biological activity. We have previously shown that intraperitoneal genistein administration and diet supplementation activates the thermogenic program in rats and mice subcutaneous white adipose tissue (scWAT) under multiple environmental cues, including cold exposure and high-fat diet feeding. However, the mechanistic insights of this process were not previously unveiled. Uncoupling protein 1 (UCP1), a mitochondrial membrane polypeptide responsible for dissipating energy into heat, is considered the most relevant thermogenic marker; thus, we aimed to evaluate whether genistein regulates UCP1 transcription. Here we show that genistein administration to thermoneutral-housed mice leads to the appearance of beige adipocyte markers, including a sharp upregulation of UCP1 expression and protein abundance in scWAT. Reporter assays showed an increase in UCP1 promoter activity after genistein stimulation, and in silico analysis revealed the presence of estrogen (ERE) and cAMP (CRE) response elements as putative candidates of genistein activation. Mutation of the CRE but not the ERE reduced genistein-induced promoter activity by 51%. Additionally, in vitro and in vivo ChIP assays demonstrated the binding of CREB to the UCP1 promoter after acute genistein administration. Taken together, these data elucidate the mechanism of genistein-mediated UCP1 induction and confirm its potential applications in managing metabolic disorders.
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Affiliation(s)
- Rebeca Fuentes-Romero
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
- Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, México City, Mexico
| | - Laura A Velázquez-Villegas
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Sarai Vasquez-Reyes
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Berenice Pérez-Jiménez
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Zuleima N Domínguez Velázquez
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Mónica Sánchez-Tapia
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Ariana Vargas-Castillo
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Sandra Tobón-Cornejo
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Adriana M López-Barradas
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Valentín Mendoza
- Department of Cellular and Developmental Biology, Institute of Cellular Physiology, UNAM, México City, Mexico
| | - Nimbe Torres
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
| | - Fernando López-Casillas
- Department of Cellular and Developmental Biology, Institute of Cellular Physiology, UNAM, México City, Mexico
| | - Armando R Tovar
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, México City, Mexico
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Rocha Robledo AK, Flores Salazar M, Muñiz Martínez BA, Torres-Rosales ÁA, Lara-Alfaro HF, Del Pozo-Zamudio O, Cerda-Méndez EA, Jiménez-Sandoval S, De Luna Bugallo A. Interlayer charge transfer in supported and suspended MoS2/Graphene/MoS2 vertical heterostructures. PLoS One 2023; 18:e0283834. [PMID: 37490510 PMCID: PMC10368229 DOI: 10.1371/journal.pone.0283834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/15/2023] [Indexed: 07/27/2023] Open
Abstract
In this letter, we report on the optical and structural properties of supported and suspended MoS2/Graphene/MoS2 vertical heterostructures using Raman and photoluminescence (PL) spectroscopies. Vertical heterostructures (VH) are formed by multiple wet transfers on micro-sized holes in SiO2/Si substrates, resulting in VH with different configurations. The strong interlayer coupling is confirmed by Raman spectroscopy. Additionally, we observe an enhancement of the PL emission in the three-layer VH (either support or suspended) compared with bare MoS2 or MoS2/Graphene. This suggests the formation of a spatial type-II band alignment assisted by the graphene layer and thus, the operation of the VH as a n++/metal/n junction.
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Affiliation(s)
| | - Mario Flores Salazar
- Departamento de Nanotecnología, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Querétaro, México
| | | | - Ángel A. Torres-Rosales
- Instituto de Investigación en Comunicación Óptica Universidad Autónoma de San Luis Potosí San Luis Potosí, San Luis, S.L.P. México
| | - Héctor F. Lara-Alfaro
- Instituto de Investigación en Comunicación Óptica Universidad Autónoma de San Luis Potosí San Luis Potosí, San Luis, S.L.P. México
| | - Osvaldo Del Pozo-Zamudio
- Instituto de Investigación en Comunicación Óptica Universidad Autónoma de San Luis Potosí San Luis Potosí, San Luis, S.L.P. México
| | - Edgar A. Cerda-Méndez
- Instituto de Investigación en Comunicación Óptica Universidad Autónoma de San Luis Potosí San Luis Potosí, San Luis, S.L.P. México
| | | | - Andres De Luna Bugallo
- Departamento de Nanotecnología, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Querétaro, México
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García-Hernández B, Morán J. Txnip expression promotes JNK-mediated neuronal death in response to reactive oxygen species. Front Mol Neurosci 2023; 16:1210962. [PMID: 37547922 PMCID: PMC10397383 DOI: 10.3389/fnmol.2023.1210962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 07/06/2023] [Indexed: 08/08/2023] Open
Abstract
TXNIP is a protein sensitive to oxidant conditions whose expression is related to the progression of death in cancer, diabetes, ischemia, and neurodegenerative diseases, among others. Because of this, many studies propose TXNIP as a therapeutic target in several diseases. Exposure of cerebellar granule neurons to staurosporine or low potassium leads to apoptotic death. Both conditions generate an early production of reactive oxygen species (ROS) that induces the activation of the ASK1 pathway and the apoptotic machinery. In these models, it has been shown an increase in TXNIP protein mediated by ROS. Here, we evaluated the molecular mechanisms involved in the regulation of the Txnip expression during neuronal death, as well as the role of the protein in the progression of cell death induced by these two apoptotic conditions. In cultured cerebellar granule neurons, we observed that low potassium and staurosporine induced an early increase in ROS that correlated with an increase in Txnip mRNA. When we evaluated the promoter of the gene, we found that the JASPAR-reported FOXO1/3 transcription factor motifs are close to the transcription start site (TSS). We then verified through the Chromatin immunoprecipitation technique (ChIP) that FOXO3 interacts with the Txnip promoter after 1 h of low potassium treatment. We also detected FOXO3 nuclear translocation by low potassium and staurosporine treatments. Finally, by using shRNA in the neuroblastoma MSN cell line, we found that Txnip downregulation decreased neuronal death induced by staurosporine stimulus. Together, these results suggest that ROS promotes the expression of Txnip through the activation of the FOXO3 transcription factor mediated by Akt inhibition. We also demonstrated that TXNIP is necessary for neuronal death progression.
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Affiliation(s)
| | - Julio Morán
- División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
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38
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Montiel T, Gómora-García JC, Gerónimo-Olvera C, Heras-Romero Y, Bernal-Vicente BN, Pérez-Martínez X, Tovar-Y-Romo LB, Massieu L. Modulation of the autophagy-lysosomal pathway and endoplasmic reticulum stress by ketone bodies in experimental models of stroke. J Neurochem 2023; 166:87-106. [PMID: 37328918 DOI: 10.1111/jnc.15852] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 02/01/2023] [Revised: 05/13/2023] [Accepted: 05/17/2023] [Indexed: 06/18/2023]
Abstract
Ischemic stroke is a leading cause of disability worldwide. There is no simple treatment to alleviate ischemic brain injury, as thrombolytic therapy is applicable within a narrow time window. During the last years, the ketogenic diet (KD) and the exogenous administration of the ketone body β-hydroxybutyrate (BHB) have been proposed as therapeutic tools for acute neurological disorders and both can reduce ischemic brain injury. However, the mechanisms involved are not completely clear. We have previously shown that the D enantiomer of BHB stimulates the autophagic flux in cultured neurons exposed to glucose deprivation (GD) and in the brain of hypoglycemic rats. Here, we have investigated the effect of the systemic administration of D-BHB, followed by its continuous infusion after middle cerebral artery occlusion (MCAO), on the autophagy-lysosomal pathway and the activation of the unfolded protein response (UPR). Results show for the first time that the protective effect of BHB against MCAO injury is enantiomer selective as only D-BHB, the physiologic enantiomer of BHB, significantly reduced brain injury. D-BHB treatment prevented the cleavage of the lysosomal membrane protein LAMP2 and stimulated the autophagic flux in the ischemic core and the penumbra. In addition, D-BHB notably reduced the activation of the PERK/eIF2α/ATF4 pathway of the UPR and inhibited IRE1α phosphorylation. L-BHB showed no significant effect relative to ischemic animals. In cortical cultures under GD, D-BHB prevented LAMP2 cleavage and decreased lysosomal number. It also abated the activation of the PERK/eIF2α/ATF4 pathway, partially sustained protein synthesis, and reduced pIRE1α. In contrast, L-BHB showed no significant effects. Results suggest that protection elicited by D-BHB treatment post-ischemia prevents lysosomal rupture allowing functional autophagy, preventing the loss of proteostasis and UPR activation.
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Affiliation(s)
- Teresa Montiel
- Departamento de Neuropatología Molecular, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Juan Carlos Gómora-García
- Departamento de Neuropatología Molecular, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Cristian Gerónimo-Olvera
- Departamento de Neuropatología Molecular, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Yessica Heras-Romero
- Departamento de Psicobiología y Neurociencias, División de Estudios de Posgrado e Investigación, Facultad de Psicología, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Berenice N Bernal-Vicente
- Departamento de Neuropatología Molecular, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Xochitl Pérez-Martínez
- Departamento de Genética Molecular, División de Investigación Básica, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Luis B Tovar-Y-Romo
- Departamento de Neuropatología Molecular, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Lourdes Massieu
- Departamento de Neuropatología Molecular, División de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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Flores-Mireles D, Camacho-Villasana Y, Lutikurti M, García-Guerrero AE, Lozano-Rosas G, Chagoya V, Gutiérrez-Cirlos EB, Brandt U, Cabrera-Orefice A, Pérez-Martínez X. The cytochrome b carboxyl terminal region is necessary for mitochondrial complex III assembly. Life Sci Alliance 2023; 6:e202201858. [PMID: 37094942 PMCID: PMC10132202 DOI: 10.26508/lsa.202201858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 04/26/2023] Open
Abstract
Mitochondrial bc 1 complex from yeast has 10 subunits, but only cytochrome b (Cytb) subunit is encoded in the mitochondrial genome. Cytb has eight transmembrane helices containing two hemes b for electron transfer. Cbp3 and Cbp6 assist Cytb synthesis, and together with Cbp4 induce Cytb hemylation. Subunits Qcr7/Qcr8 participate in the first steps of assembly, and lack of Qcr7 reduces Cytb synthesis through an assembly-feedback mechanism involving Cbp3/Cbp6. Because Qcr7 resides near the Cytb carboxyl region, we wondered whether this region is important for Cytb synthesis/assembly. Although deletion of the Cytb C-region did not abrogate Cytb synthesis, the assembly-feedback regulation was lost, so Cytb synthesis was normal even if Qcr7 was missing. Mutants lacking the Cytb C-terminus were non-respiratory because of the absence of fully assembled bc 1 complex. By performing complexome profiling, we showed the existence of aberrant early-stage subassemblies in the mutant. In this work, we demonstrate that the C-terminal region of Cytb is critical for regulation of Cytb synthesis and bc 1 complex assembly.
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Affiliation(s)
- Daniel Flores-Mireles
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México City, México
| | - Yolanda Camacho-Villasana
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México City, México
| | - Madhurya Lutikurti
- Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Aldo E García-Guerrero
- Department of Medicine and Biochemistry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Guadalupe Lozano-Rosas
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México City, México
| | - Victoria Chagoya
- Departamento de Biología Celular y Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México City, México
| | | | - Ulrich Brandt
- Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Alfredo Cabrera-Orefice
- Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Xochitl Pérez-Martínez
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, México City, México
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Gutiérrez Brizuela N, Alford MH, Xie SP, Sprintall J, Voet G, Warner SJ, Hughes K, Moum JN. Prolonged thermocline warming by near-inertial internal waves in the wakes of tropical cyclones. Proc Natl Acad Sci U S A 2023; 120:e2301664120. [PMID: 37339203 PMCID: PMC10293854 DOI: 10.1073/pnas.2301664120] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/03/2023] [Indexed: 06/22/2023] Open
Abstract
Turbulence-enhanced mixing of upper ocean heat allows interaction between the tropical atmosphere and cold water masses that impact climate at higher latitudes thereby regulating air-sea coupling and poleward heat transport. Tropical cyclones (TCs) can drastically enhance upper ocean mixing and generate powerful near-inertial internal waves (NIWs) that propagate down into the deep ocean. Globally, downward mixing of heat during TC passage causes warming in the seasonal thermocline and pumps 0.15 to 0.6 PW of heat into the unventilated ocean. The final distribution of excess heat contributed by TCs is needed to understand subsequent consequences for climate; however, it is not well constrained by current observations. Notably, whether or not excess heat supplied by TCs penetrates deep enough to be kept in the ocean beyond the winter season is a matter of debate. Here, we show that NIWs generated by TCs drive thermocline mixing weeks after TC passage and thus greatly deepen the extent of downward heat transfer induced by TCs. Microstructure measurements of the turbulent diffusivity ([Formula: see text]) and turbulent heat flux (J[Formula: see text]) in the Western Pacific before and after the passage of three TCs indicate that mean thermocline values of [Formula: see text] and J[Formula: see text] increased by factors of 2 to 7 and 2 to 4 (95% confidence level), respectively, after TC passage. Excess mixing is shown to be associated with the vertical shear of NIWs, demonstrating that studies of TC-climate interactions ought to represent NIWs and their mixing to accurately capture TC effects on background ocean stratification and climate.
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Affiliation(s)
| | - Matthew H. Alford
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA92093
| | - Shang-Ping Xie
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA92093
| | - Janet Sprintall
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA92093
| | - Gunnar Voet
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA92093
| | - Sally J. Warner
- Environmental Studies Program and Physics Department, Brandeis University, Waltham, MA02453
| | - Kenneth Hughes
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR97331
| | - James N. Moum
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR97331
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Van Durme M, Olvera-Carrillo Y, Pfeiffer ML, Doll NM, De Winter F, Lin Z, Nowack MK. Fertility loss in senescing Arabidopsis ovules is controlled by the maternal sporophyte via a NAC transcription factor triad. Proc Natl Acad Sci U S A 2023; 120:e2219868120. [PMID: 37307449 DOI: 10.1073/pnas.2219868120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 05/17/2023] [Indexed: 06/14/2023] Open
Abstract
Flowers have a species-specific fertile period during which pollination and fertilization have to occur to initiate seed and fruit development. Unpollinated flowers remain receptive for mere hours in some species, and up to several weeks in others before flower senescence terminates fertility. As such, floral longevity is a key trait subject to both natural selection and plant breeding. Within the flower, the life span of the ovule containing the female gametophyte is decisive for fertilization and the initiation of seed development. Here, we show that unfertilized ovules in Arabidopsis thaliana undergo a senescence program that generates morphological and molecular hallmarks of canonical programmed cell death processes in the sporophytically derived ovule integuments. Transcriptome profiling of isolated aging ovules revealed substantial transcriptomic reprogramming during ovule senescence, and identified up-regulated transcription factors as candidate regulators of these processes. Combined mutation of three most-up-regulated NAC (NAM, ATAF1/2, and CUC2) transcription factors, NAP/ANAC029, SHYG/ANAC047, and ORE1/ANAC092, caused a substantial delay in ovule senescence and an extension of fertility in Arabidopsis ovules. These results suggest that timing of ovule senescence and duration of gametophyte receptivity are subject to genetic regulation controlled by the maternal sporophyte.
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Affiliation(s)
- Matthias Van Durme
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Yadira Olvera-Carrillo
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Marie L Pfeiffer
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Nicolas M Doll
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Freya De Winter
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Zongcheng Lin
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Moritz K Nowack
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
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Viettri M, Caraballo G, Sanchez ME, Espejel-Nuñez A, Betanzos A, Ortiz-Navarrete V, Estrada-Gutierrez G, Nava P, Ludert JE. Comparative Infections of Zika, Dengue, and Yellow Fever Viruses in Human Cytotrophoblast-Derived Cells Suggest a Gating Role for the Cytotrophoblast in Zika Virus Placental Invasion. Microbiol Spectr 2023; 11:e0063023. [PMID: 37227282 PMCID: PMC10269719 DOI: 10.1128/spectrum.00630-23] [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: 02/14/2023] [Accepted: 05/01/2023] [Indexed: 05/26/2023] Open
Abstract
The Zika virus (ZIKV) is teratogenic and considered a TORCH pathogen (toxoplasmosis [Toxoplasma gondii], rubella, cytomegalovirus, herpes simplex virus [HSV], and other microorganisms capable of crossing the blood-placenta barrier). In contrast, the related flavivirus dengue virus (DENV) and the attenuated yellow fever virus vaccine strain (YFV-17D) are not. Understanding the mechanisms used by ZIKV to cross the placenta is necessary. In this work, parallel infections with ZIKV of African and Asian lineages, DENV, and YFV-17D were compared for kinetics and growth efficiency, activation of mTOR pathways, and cytokine secretion profile using cytotrophoblast-derived HTR8 cells and monocytic U937 cells differentiated to M2 macrophages. In HTR8 cells, ZIKV replication, especially the African strain, was significantly more efficient and faster than DENV or YFV-17D. In macrophages, ZIKV replication was also more efficient, although differences between strains were reduced. Greater activation of the mTORC1 and mTORC2 pathways in HTR8 cells infected with ZIKV than with DENV or YFV-17D was observed. HTR8 cells treated with mTOR inhibitors showed a 20-fold reduction in ZIKV yield, versus 5- and 3.5-fold reductions for DENV and YFV-17D, respectively. Finally, infection with ZIKV, but not DENV or YFV-17D, efficiently inhibited the interferon (IFN) and chemoattractant responses in both cell lines. These results suggest a gating role for the cytotrophoblast cells in favoring entry of ZIKV, but not DENV and YFV-17D, into the placental stroma. IMPORTANCE Zika virus acquisition during pregnancy is associated with severe fetal damage. The Zika virus is related to dengue virus and yellow fever virus, yet fetal damage has not been related to dengue or inadvertent vaccination for yellow fever during pregnancy. Mechanisms used by the Zika virus to cross the placenta need to be deciphered. By comparing parallel infections of Zika virus strains belonging to the African and Asian lineages, dengue virus, and the yellow fever vaccine virus strain YFV-17D in placenta-derived cytotrophoblast cells and differentiated macrophages, evidence was found that Zika virus infections, especially by the African strains, were more efficient in cytotrophoblast cells than dengue virus or yellow fever vaccine virus strain infections. Meanwhile, no significant differences were observed in macrophages. Robust activation of the mTOR signaling pathways and inhibition of the IFN and chemoattractant response appear to be related to the better growth capacity of the Zika viruses in the cytotrophoblast-derived cells.
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Affiliation(s)
- Mercedes Viettri
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
| | - Gerson Caraballo
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
| | - Maria Elena Sanchez
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
| | | | - Abigail Betanzos
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
| | - Vianney Ortiz-Navarrete
- Department of Molecular Biomedicine, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
| | | | - Porfirio Nava
- Department of Biophysical Physiology and Neuroscience, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
| | - Juan E. Ludert
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (CINVESTAV-IPN), Mexico City, Mexico
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De la Cruz-Rodríguez Y, Adrián-López J, Martínez-López J, Neri-Márquez BI, García-Pineda E, Alvarado-Gutiérrez A, Fraire-Velázquez S. Biosynthetic Gene Clusters in Sequenced Genomes of Four Contrasting Rhizobacteria in Phytopathogen Inhibition and Interaction with Capsicum annuum Roots. Microbiol Spectr 2023; 11:e0307222. [PMID: 37222590 PMCID: PMC10269915 DOI: 10.1128/spectrum.03072-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 05/04/2023] [Indexed: 05/25/2023] Open
Abstract
Through screening of rhizobacteria, species that effectively suppress phytopathogens and/or promote plant growth are found. Genome sequencing is a crucial step in obtaining a complete characterization of microorganisms for biotechnological applications. This study aimed to sequence the genomes of four rhizobacteria that differ in their inhibition of four root pathogens and in their interaction with chili pepper roots to identify the species and analyze differences in the biosynthetic gene clusters (BGCs) for antibiotic metabolites and to determine possible phenotype-genotype correlations. Results from sequencing and genome alignment identified two bacteria as Paenibacillus polymyxa, one as Kocuria polaris, and one that was previously sequenced as Bacillus velezensis. Analysis with antiSMASH and PRISM tools showed that B. velezensis 2A-2B, the strain with the best performance of referred characteristics, had 13 BGCs, including those related to surfactin, fengycin, and macrolactin, not shared with the other bacteria, whereas P. polymyxa 2A-2A and 3A-25AI, with up to 31 BGCs, showed lower pathogen inhibition and plant hostility; K. polaris showed the least antifungal capacity. P. polymyxa and B. velezensis had the highest number of BGCs for nonribosomal peptides and polyketides. In conclusion, the 13 BGCs in the genome of B. velezensis 2A-2B that were not present in the other bacteria could explain its effective antifungal capacity and could also contribute to its friendly interaction with chili pepper roots. The high number of other BGCs for nonribosomal peptides and polyketide shared by the four bacteria contributed much less to phenotypic differences. IMPORTANCE To advance the characterization of a microorganism as a biocontrol agent against phytopathogens, it is highly recommended to analyze the potential of the profile of secondary metabolites as antibiotics that it produces to counteract pathogens. Some specific metabolites have positive impacts in plants. By analyzing sequenced genomes with bioinformatic tools, such as antiSMASH and PRISM, outstanding bacterial strains with high potential to inhibit phytopathogens and/or promote plant growth can be quickly selected to confirm and expand our knowledge of BGCs of great value in phytopathology.
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Affiliation(s)
- Yumiko De la Cruz-Rodríguez
- Lab. Biología Integrativa de Plantas y Microorganismos, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - Jesús Adrián-López
- Lab. MicroRNAs y Cáncer, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - Jazmín Martínez-López
- Lab. Biología Integrativa de Plantas y Microorganismos, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - Bibiana Itzel Neri-Márquez
- Lab. Biología Integrativa de Plantas y Microorganismos, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | | | - Alejandro Alvarado-Gutiérrez
- Lab. Biología Integrativa de Plantas y Microorganismos, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
| | - Saúl Fraire-Velázquez
- Lab. Biología Integrativa de Plantas y Microorganismos, Unidad Académica de Ciencias Biológicas, Universidad Autónoma de Zacatecas, Zacatecas, Mexico
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Ortega-Hernández E, Camero-Maldonado AV, Acevedo-Pacheco L, Jacobo-Velázquez DA, Antunes-Ricardo M. Immunomodulatory and Antioxidant Effects of Spray-Dried Encapsulated Kale Sprouts after In Vitro Gastrointestinal Digestion. Foods 2023; 12:foods12112149. [PMID: 37297394 DOI: 10.3390/foods12112149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/24/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023] Open
Abstract
The health-related compounds present in kale are vulnerable to the digestive process or storage conditions. Encapsulation has become an alternative for their protection and takes advantage of their biological activity. In this study, 7-day-old Red Russian kale sprouts grown in the presence of selenium (Se) and sulfur (S) were spray-dried with maltodextrin to assess their capacity to protect kale sprout phytochemicals from degradation during the digestion process. Analyses were conducted on the encapsulation efficiency, particle morphology, and storage stability. Mouse macrophages (Raw 264.7) and human intestinal cells (Caco-2) were used to assess the effect of the intestinal-digested fraction of the encapsulated kale sprout extracts on the cellular antioxidant capacity, the production of nitric oxide (NOx), and the concentrations of different cytokines as indicators of the immunological response. The highest encapsulation efficiency was observed in capsules with a 50:50 proportion of the hydroalcoholic extract of kale and maltodextrin. Gastrointestinal digestion affected compounds' content in encapsulated and non-encapsulated kale sprouts. Spray-dried encapsulation reduced the phytochemicals' degradation during storage, and the kale sprouts germinated with S and Se showed less degradation of lutein (35.6%, 28.2%), glucosinolates (15.4%, 18.9%), and phenolic compounds (20.3%, 25.7%), compared to non-encapsulated ones, respectively. S-encapsulates exerted the highest cellular antioxidant activity (94.2%) and immunomodulatory activity by stimulating IL-10 production (88.9%) and COX-2 (84.1%) and NOx (92.2%) inhibition. Thus, encapsulation is an effective method to improve kale sprout phytochemicals' stability and bioactivity during storage and metabolism.
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Affiliation(s)
- Erika Ortega-Hernández
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología-FEMSA, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute for Obesity Research, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
| | - Ana Victoria Camero-Maldonado
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Av. Ignacio Morones Prieto 3000, Monterrey 64710, Mexico
| | - Laura Acevedo-Pacheco
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología-FEMSA, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
| | - Daniel A Jacobo-Velázquez
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. General Ramón Corona 2514, Zapopan 45201, Mexico
- Tecnologico de Monterrey, Institute for Obesity Research, Ave. General Ramón Corona 2514, Zapopan 45201, Mexico
| | - Marilena Antunes-Ricardo
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología-FEMSA, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
- Tecnologico de Monterrey, Institute for Obesity Research, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
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Jose-Abrego A, Roman S, Laguna-Meraz S, Rebello-Pinho JR, Justo Arevalo S, Panduro A. Tracing the evolutionary history of hepatitis B virus genotype H endemic to Mexico. Front Microbiol 2023; 14:1180931. [PMID: 37293217 PMCID: PMC10244555 DOI: 10.3389/fmicb.2023.1180931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 05/02/2023] [Indexed: 06/10/2023] Open
Abstract
Hepatitis B virus (HBV) spreads efficiently among all human populations worldwide. HBV is classified into ten genotypes (A to J) with their geographic distribution and clinical features. In Mexico, HBV genotype H is the leading cause of hepatitis B and has been detected in indigenous populations, suggesting that HBV genotype H may be native to Mexico. However, little is known about the evolutionary history of HBV genotype H. Thus, we aimed to determine the age of HBV genotype H in Mexico using molecular dating techniques. Ninety-two HBV sequences of the reverse transcriptase (RT) domain of the polymerase gene (~1,251 bp) were analyzed; 48 were genotype H, 43 were genotype F, and the oldest HBV sequence from America was included as the root. All sequences were aligned, and the most recent common ancestor (TMRCA) time was calculated using the Bayesian Skyline Evolutionary Analysis. Our results estimate a TMRCA for the genotype H in Mexico of 2070.9 (667.5-4489.2) years before the present (YBP). We identified four major diversification events in genotype H, named H1, H2, H3, and H4. The TMRCA of H1 was 1213.0 (253.3-2638.3) YBP, followed by H2 1175.5 (557.5-2424.2) YBP, H3 949.6 (279.3-2105.0) YBP, and H4 1230.5 (336.3, 2756.7) YBP. We estimated that genotype H diverged from its sister genotype F around 8140.8 (1867.5-18012.8) YBP. In conclusion, this study found that genotype H in Mexico has an estimated age of 2070.9 (667.5-4489.2) YBP and has experienced at least four major diversification events since then.
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Affiliation(s)
- Alexis Jose-Abrego
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, "Fray Antonio Alcalde", Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Sonia Roman
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, "Fray Antonio Alcalde", Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Saul Laguna-Meraz
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, "Fray Antonio Alcalde", Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
- Molecular Biology in Medicine Doctorate Program, Guadalajara, Mexico
| | - João Renato Rebello-Pinho
- Department of Gastroenterology, Institute of Tropical Medicine and School of Medicine, LIM07, University of São Paulo, São Paulo, Brazil
- Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Santiago Justo Arevalo
- Faculty of Biological Sciences, Ricardo Palma University, Lima, Peru
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, São Paulo, Brazil
| | - Arturo Panduro
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, "Fray Antonio Alcalde", Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
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Serrano-Sandoval SN, Jiménez-Rodríguez A, Hernández-Pérez J, Chavez-Santoscoy RA, Guardado-Félix D, Antunes-Ricardo M. Selenized Chickpea Sprouts Hydrolysates as a Potential Anti-Aging Ingredient. Molecules 2023; 28:molecules28083402. [PMID: 37110634 PMCID: PMC10145560 DOI: 10.3390/molecules28083402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 03/31/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Skin aging represents a health and aesthetic problem that could result in infections and skin diseases. Bioactive peptides can potentially be used in skin aging regulation. Chickpea (Cicer arietinum L.) selenoproteins were obtained from germination with 2 mg Na2SeO3/100 g of seeds for 2 days. Alcalase, pepsin, and trypsin were used as hydrolyzers, and a membrane < 10 kDa was used to fractionate the hydrolysate. Se content, antioxidant capacity, elastase and collagen inhibition, functional stability, and preventative capacity were analyzed. Significant increases in Se content were found in germinated chickpea flour and protein related to the control. An increase of 38% in protein was observed in the selenized flour related to the control. A band (600-550 cm-1) observed in the selenized hydrolysates suggested the insertion of Se into the protein. Hydrolysates from pepsin and trypsin had the highest antioxidant potential. Se enhanced the stability of total protein and protein hydrolysates through time and increased their antioxidant capacity. Hydrolysates > 10 kDa had higher elastase and collagenase inhibition than the total protein and hydrolysates < 10 kDa. Protein hydrolysates < 10 kDa 6 h before UVA radiation had the highest inhibition of collagen degradation. Selenized protein hydrolysates showed promising antioxidant effects that could be related to skin anti-aging effects.
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Affiliation(s)
- Sayra N Serrano-Sandoval
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, NL, Mexico
- The Institute for Obesity Research, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, NL, Mexico
| | - Antonio Jiménez-Rodríguez
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, NL, Mexico
| | - Jesús Hernández-Pérez
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, NL, Mexico
| | | | - Daniela Guardado-Félix
- Programa Regional de Posgrado en Biotecnología, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, FCQB-UAS, AP 1354, Culiacan 80000, SIN, Mexico
| | - Marilena Antunes-Ricardo
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, NL, Mexico
- The Institute for Obesity Research, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, NL, Mexico
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Terreros-Roncal J, Flor-García M, Moreno-Jiménez EP, Rodríguez-Moreno CB, Márquez-Valadez B, Gallardo-Caballero M, Rábano A, Llorens-Martín M. Methods to study adult hippocampal neurogenesis in humans and across the phylogeny. Hippocampus 2023; 33:271-306. [PMID: 36259116 PMCID: PMC7614361 DOI: 10.1002/hipo.23474] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/16/2022] [Accepted: 09/25/2022] [Indexed: 11/09/2022]
Abstract
The hippocampus hosts the continuous addition of new neurons throughout life-a phenomenon named adult hippocampal neurogenesis (AHN). Here we revisit the occurrence of AHN in more than 110 mammalian species, including humans, and discuss the further validation of these data by single-cell RNAseq and other alternative techniques. In this regard, our recent studies have addressed the long-standing controversy in the field, namely whether cells positive for AHN markers are present in the adult human dentate gyrus (DG). Here we review how we developed a tightly controlled methodology, based on the use of high-quality brain samples (characterized by short postmortem delays and ≤24 h of fixation in freshly prepared 4% paraformaldehyde), to address human AHN. We review that the detection of AHN markers in samples fixed for 24 h required mild antigen retrieval and chemical elimination of autofluorescence. However, these steps were not necessary for samples subjected to shorter fixation periods. Moreover, the detection of labile epitopes (such as Nestin) in the human hippocampus required the use of mild detergents. The application of this strictly controlled methodology allowed reconstruction of the entire AHN process, thus revealing the presence of neural stem cells, proliferative progenitors, neuroblasts, and immature neurons at distinct stages of differentiation in the human DG. The data reviewed here demonstrate that methodology is of utmost importance when studying AHN by means of distinct techniques across the phylogenetic scale. In this regard, we summarize the major findings made by our group that emphasize that overlooking fundamental technical principles might have consequences for any given research field.
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Affiliation(s)
- Julia Terreros-Roncal
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Spanish Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
- Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Miguel Flor-García
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Spanish Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
- Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Elena P Moreno-Jiménez
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Spanish Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
- Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Carla B Rodríguez-Moreno
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Spanish Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Berenice Márquez-Valadez
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Spanish Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Marta Gallardo-Caballero
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Spanish Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Department of Molecular Biology, Faculty of Sciences, Universidad Autónoma de Madrid, Madrid, Spain
- Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
| | - Alberto Rábano
- Neuropathology Department, CIEN Foundation, Madrid, Spain
| | - María Llorens-Martín
- Department of Molecular Neuropathology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Spanish Research Council (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Center for Networked Biomedical Research on Neurodegenerative Diseases (CIBERNED), Madrid, Spain
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Zurita-Artaloitia JM, Rivera J, Vinuesa P. Extensive Cryptic Diversity and Ecological Associations Uncovered among Mexican and Global Collections of Naegleria and Vermamoeba Species by 18S Ribosomal DNA, Internal Transcribed Spacer, and Cytochrome Oxidase Subunit I Sequence Analysis. Microbiol Spectr 2023; 11:e0379522. [PMID: 36943092 PMCID: PMC10100766 DOI: 10.1128/spectrum.03795-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 02/26/2023] [Indexed: 03/23/2023] Open
Abstract
Free-living amoebae (FLA) are phagocytic protists that play crucial roles in microbial communities as significant microbial grazers. However, our current knowledge of their diversity, ecology, and population genetic structures is marginal due to the shallow and biased sampling of ecosystems and the use of few, poorly resolving molecular markers. Thirty-two FLA were isolated from soil and water samples collected across representative ecosystems of the State of Morelos in Central Mexico, including the drinking water distribution system (DWDS) from the state capital. We classified our isolates as members of Acanthamoeba, Vermamoeba, Naegleria, and Tetramitus by 18S ribosomal DNA (rDNA) sequencing. Vermamoeba isolates were recovered exclusively from the DWDS samples. In contrast, Naegleria strains displayed a broad distribution in soil and water samples across the natural ecosystems. We used a combination of phylogenetic and population genetic analyses of internal transcribed spacer (ITS) and cytochrome oxidase subunit I (COI) sequences from our isolates and a comprehensive set of reference sequences to analyze the currently known diversity of Naegleria spp. Significant associations were uncovered between the most prevalent lineages of Naegleria and Vermamoeba and broad ecological and geographical variables at regional and global levels. The population structure and cryptic diversity within the Naegleria galeacystis-Naegleria americana and Vermamoeba vermiformis species complexes were thoroughly analyzed. Our results prove that the genus Vermamoeba, which was previously thought to consist of only one species, actually encompasses at least seven widely distributed species, as indicated by consistent evidence from Bayesian phylogenetics, two species-delimitation programs, and population genetics analyses. IMPORTANCE Our study sheds new light on the population genetic structure of V. vermiformis and diverse Naegleria species. Using improved molecular markers and advanced analytical approaches, we discovered that N. americana, previously considered a single species, actually contains multiple distinct lineages, as revealed by COI sequencing. These lineages are highly differentiated, with little gene flow between them. Our findings demonstrate that the genus Vermamoeba holds multiple cryptic species, requiring a significant taxonomic revision in light of multilocus sequence analyses. These results advance our understanding of the ecology, molecular systematics, and biogeography of these genera and species complexes at both regional and global scales. This study has significant implications for diagnosing amoebal infections and evaluating health risks associated with FLA in domestic and recreational waters.
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Affiliation(s)
| | - Javier Rivera
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Pablo Vinuesa
- Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
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Dávila-Delgado R, Flores-Canúl K, Juárez-Verdayes MA, Sánchez-López R. Rhizobia induce SYMRK endocytosis in Phaseolus vulgaris root hair cells. Planta 2023; 257:83. [PMID: 36928335 PMCID: PMC10020325 DOI: 10.1007/s00425-023-04116-0] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
PvSYMRK-EGFP undergoes constitutive and rhizobia-induced endocytosis, which rely on the phosphorylation status of T589, the endocytic YXXØ motif and the kinase activity of the receptor. Legume-rhizobia nodulation is a complex developmental process. It initiates when the rhizobia-produced Nod factors are perceived by specific LysM receptors present in the root hair apical membrane. Consequently, SYMRK (Symbiosis Receptor-like Kinase) becomes active in the root hair and triggers an extensive signaling network essential for the infection process and nodule organogenesis. Despite its relevant functions, the underlying cellular mechanisms involved in SYMRK signaling activity remain poorly characterized. In this study, we demonstrated that PvSYMRK-EGFP undergoes constitutive and rhizobia-induced endocytosis. We found that in uninoculated roots, PvSYMRK-EGFP is mainly associated with the plasma membrane, although intracellular puncta labelled with PvSymRK-EGFP were also observed in root hair and nonhair-epidermal cells. Inoculation with Rhizobium etli producing Nod factors induces in the root hair a redistribution of PvSYMRK-EGFP from the plasma membrane to intracellular puncta. In accordance, deletion of the endocytic motif YXXØ (YKTL) and treatment with the endocytosis inhibitors ikarugamycin (IKA) and tyrphostin A23 (TyrA23), as well as brefeldin A (BFA), drastically reduced the density of intracellular PvSYMRK-EGFP puncta. A similar effect was observed in the phosphorylation-deficient (T589A) and kinase-dead (K618E) mutants of PvSYMRK-EGFP, implying these structural features are positive regulators of PvSYMRK-EGFP endocytosis. Our findings lead us to postulate that rhizobia-induced endocytosis of SYMRK modulates the duration and amplitude of the SYMRK-dependent signaling pathway.
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Affiliation(s)
- Raúl Dávila-Delgado
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Colonia Chamilpa, 62210 Cuernavaca, Morelos Mexico
| | - Karen Flores-Canúl
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Colonia Chamilpa, 62210 Cuernavaca, Morelos Mexico
| | - Marco Adán Juárez-Verdayes
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Colonia Chamilpa, 62210 Cuernavaca, Morelos Mexico
| | - Rosana Sánchez-López
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Colonia Chamilpa, 62210 Cuernavaca, Morelos Mexico
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50
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Griffiths ME, Meza DK, Haydon DT, Streicker DG. Inferring the disruption of rabies circulation in vampire bat populations using a betaherpesvirus-vectored transmissible vaccine. Proc Natl Acad Sci U S A 2023; 120:e2216667120. [PMID: 36877838 PMCID: PMC10089182 DOI: 10.1073/pnas.2216667120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 09/30/2022] [Accepted: 01/25/2023] [Indexed: 03/08/2023] Open
Abstract
Transmissible vaccines are an emerging biotechnology that hold prospects to eliminate pathogens from wildlife populations. Such vaccines would genetically modify naturally occurring, nonpathogenic viruses ("viral vectors") to express pathogen antigens while retaining their capacity to transmit. The epidemiology of candidate viral vectors within the target wildlife population has been notoriously challenging to resolve but underpins the selection of effective vectors prior to major investments in vaccine development. Here, we used spatiotemporally replicated deep sequencing to parameterize competing epidemiological mechanistic models of Desmodus rotundus betaherpesvirus (DrBHV), a proposed vector for a transmissible vaccine targeting vampire bat-transmitted rabies. Using 36 strain- and location-specific time series of prevalence collected over 6 y, we found that lifelong infections with cycles of latency and reactivation, combined with a high R0 (6.9; CI: 4.39 to 7.85), are necessary to explain patterns of DrBHV infection observed in wild bats. These epidemiological properties suggest that DrBHV may be suited to vector a lifelong, self-boosting, and transmissible vaccine. Simulations showed that inoculating a single bat with a DrBHV-vectored rabies vaccine could immunize >80% of a bat population, reducing the size, frequency, and duration of rabies outbreaks by 50 to 95%. Gradual loss of infectious vaccine from vaccinated individuals is expected but can be countered by inoculating larger but practically achievable proportions of bat populations. Parameterizing epidemiological models using accessible genomic data brings transmissible vaccines one step closer to implementation.
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Affiliation(s)
- Megan E. Griffiths
- Medical Research Council–University of Glasgow Centre for Virus Research, GlasgowG61 1QH, United Kingdom
| | - Diana K. Meza
- School of Biodiversity, One Health and Veterinary Medicine, University of Glasgow, GlasgowG61 1QH, United Kingdom
| | - Daniel T. Haydon
- School of Biodiversity, One Health and Veterinary Medicine, University of Glasgow, GlasgowG61 1QH, United Kingdom
| | - Daniel G. Streicker
- Medical Research Council–University of Glasgow Centre for Virus Research, GlasgowG61 1QH, United Kingdom
- School of Biodiversity, One Health and Veterinary Medicine, University of Glasgow, GlasgowG61 1QH, United Kingdom
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