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Mercado-Gómez OF, Arriaga-Ávila VS, Vega-García A, Orozco-Suarez S, Pérez-Koldenkova V, Camarillo-Sánchez JJ, Álvarez-Herrera M, Guevara-Guzmán R. Daytime-Restricted Feeding Ameliorates Oxidative Stress by Increasing NRF2 Transcriptional Factor in the Rat Hippocampus in the Pilocarpine-Induced Acute Seizure Model. Brain Sci 2023; 13:1442. [PMID: 37891811 PMCID: PMC10605835 DOI: 10.3390/brainsci13101442] [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: 09/15/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
Seizure-mediated oxidative stress is a crucial mechanism in the pathophysiology of epilepsy. This study evaluated the antioxidant effects of daytime-restricted feeding (DRF) and the role of the Nrf2 signaling pathway in a lithium-pilocarpine model seizure model that induces status epilepticus (SE). We performed a lipoperoxidation assay and dihydroethidium fluorescence to measure oxidative stress markers in the hippocampus (malondialdehyde and reactive oxygen species). The protein content of Nrf2 and its downstream protein SOD2 was evaluated using Western blotting. The cellular distribution of the Nrf2 and SOD2 proteins in the pyramidal cell layer of both the CA1 and CA3 hippocampal subfields and astrocytes (GFAP marker) were quantified using immunofluorescence and immunohistochemistry, respectively. Our results indicate that DRF reduced the malondialdehyde levels and the production of reactive oxygen species. Furthermore, a significant increase in Nrf2 and SOD2 protein content was observed in animals subjected to restrictive diet. In addition, DRF increased the relative intensity of the Nrf2 fluorescence in the perinuclear and nuclear compartments of pyramidal neurons in the CA1 subfield. Nrf2 immunoreactivity and the astrocyte marker GFAP also increased their colocalization under DRF conditions. Additionally, SOD2 immunoreactivity was increased in CA1 pyramidal neurons but not in the CA3 region. Our findings suggest that DRF partially prevents oxidative stress by increasing the Nrf2 transcriptional factor and the SOD2 enzyme during the development of SE.
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Affiliation(s)
- Octavio Fabián Mercado-Gómez
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (O.F.M.-G.); (V.S.A.-Á.); (A.V.-G.); (J.J.C.-S.); (M.Á.-H.)
| | - Virginia Selene Arriaga-Ávila
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (O.F.M.-G.); (V.S.A.-Á.); (A.V.-G.); (J.J.C.-S.); (M.Á.-H.)
| | - Angélica Vega-García
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (O.F.M.-G.); (V.S.A.-Á.); (A.V.-G.); (J.J.C.-S.); (M.Á.-H.)
| | - Sandra Orozco-Suarez
- Medical Research Unit in Neurological Diseases, National Medical Center XXI, Mexico City 06720, Mexico;
| | - Vadim Pérez-Koldenkova
- National Advanced Microscopy Laboratory, National Medical Center XXI, Mexico City 06720, Mexico
| | - Juan José Camarillo-Sánchez
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (O.F.M.-G.); (V.S.A.-Á.); (A.V.-G.); (J.J.C.-S.); (M.Á.-H.)
| | - Marcelino Álvarez-Herrera
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (O.F.M.-G.); (V.S.A.-Á.); (A.V.-G.); (J.J.C.-S.); (M.Á.-H.)
| | - Rosalinda Guevara-Guzmán
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (O.F.M.-G.); (V.S.A.-Á.); (A.V.-G.); (J.J.C.-S.); (M.Á.-H.)
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2
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Sánchez-Ramírez D, Medrano-Guzmán R, Candanedo-González F, De Anda-González J, García-Rios LE, Pérez-Koldenkova V, Gutiérrez-de la Barrera M, Rodríguez-Enríquez S, Velasco-Velázquez M, Pacheco-Velázquez SC, Piña-Sánchez P, Mayani H, Gómez-Delgado A, Monroy-García A, Martínez-Lara AK, Montesinos JJ. High expression of both desmoplastic stroma and epithelial to mesenchymal transition markers associate with shorter survival in pancreatic ductal adenocarcinoma. Eur J Histochem 2022; 66. [PMID: 35174683 PMCID: PMC8883614 DOI: 10.4081/ejh.2022.3360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/09/2022] [Indexed: 12/24/2022] Open
Abstract
Desmoplastic stroma (DS) and the epithelial-to-mesenchymal transition (EMT) play a key role in pancreatic ductal adenocarcinoma (PDAC) progression. To date, however, the combined expression of DS and EMT markers, and their association with variations in survival within each clinical stage and degree of tumor differentiation is unknown. The purpose of this study was to investigate the association between expression of DS and EMT markers and survival variability in patients diagnosed with PDAC. We examined the expression levels of DS markers alpha smooth muscle actin (α-SMA), fibronectin, and vimentin, and the EMT markers epithelial cell adhesion molecule (EPCAM), pan-cytokeratin, and vimentin, by immunohistochemistry using a tissue microarray in a retrospective cohort of 25 patients with PDAC. The results were examined for association with survival by clinical stage and by degree of tumor differentiation. High expression of DS markers -α-SMA, fibronectin, and vimentin- was associated with decreased survival at intermediate and advanced clinical stages (p=0.006-0.03), as well as with both poorly and moderately differentiated tumor grades (p=0.01-0.02). Interestingly, the same pattern was observed for EMT markers, i.e., EPCAM, pan-cytokeratin, and vimentin (p=0.00008-0.03). High expression of DS and EMT markers within each clinical stage and degree of tumor differentiation was associated with lower PDAC survival. Evaluation of these markers may have a prognostic impact on survival time variation in patients with PDAC.
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Affiliation(s)
- Damián Sánchez-Ramírez
- Mesenchymal Stem Cells Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, Mexico City.
| | - Rafael Medrano-Guzmán
- Department of Sarcomas, Oncology Hospital, High Specialty Medical Unit (UMAE), National Medical Center, IMSS, Mexico City.
| | - Fernando Candanedo-González
- Department of Pathology, Oncology Hospital, High Specialty Medical Unit (UMAE), National Medical Center, IMSS, Mexico City.
| | - Jazmín De Anda-González
- Department of Pathology, Oncology Hospital, High Specialty Medical Unit (UMAE), National Medical Center, IMSS, Mexico City.
| | - Luis Enrique García-Rios
- Department of Sarcomas, Oncology Hospital, High Specialty Medical Unit (UMAE), National Medical Center, IMSS, Mexico City.
| | - Vadim Pérez-Koldenkova
- National Laboratory of Advanced Microscopy-IMSS, National Medical Center, Siglo XXI IMSS, Mexico City.
| | | | | | - Marco Velasco-Velázquez
- Department of Pharmacology and Peripheral Research Unit in Translational Biomedicine (CMN 20 de noviembre, ISSSTE), School of Medicine, UNAM, Mexico City.
| | | | - Patricia Piña-Sánchez
- Molecular Oncology Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, Mexico City.
| | - Héctor Mayani
- Hematopoietic Stem Cells Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, Mexico City.
| | - Alejandro Gómez-Delgado
- Infectious and Parasitic Diseases, Medical Research Unit, Pediatric Hospital, National Medical Center, IMSS, Mexico City.
| | - Alberto Monroy-García
- Immunology and Cancer Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center (IMSS), Mexico City.
| | - Ana Karen Martínez-Lara
- Mesenchymal Stem Cells Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, Mexico City.
| | - Juan José Montesinos
- Mesenchymal Stem Cells Laboratory, Oncology Research Unit, Oncology Hospital, National Medical Center, IMSS, Mexico City.
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3
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Pérez-Villanueva J, Matadamas-Martínez F, Yépez-Mulia L, Pérez-Koldenkova V, Leyte-Lugo M, Rodríguez-Villar K, Cortés-Benítez F, Macías-Jiménez AP, González-Sánchez I, Romero-Velásquez A, Palacios-Espinosa JF, Soria-Arteche O. Synthesis and Cytotoxic Activity of Combretastatin A-4 and 2,3-Diphenyl-2 H-indazole Hybrids. Pharmaceuticals (Basel) 2021; 14:ph14080815. [PMID: 34451912 PMCID: PMC8401203 DOI: 10.3390/ph14080815] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/05/2021] [Accepted: 08/13/2021] [Indexed: 11/16/2022] Open
Abstract
Cancer is the second leading cause of death, after cardiovascular diseases. Different strategies have been developed to treat cancer; however, chemotherapy with cytotoxic agents is still the most widely used treatment approach. Nevertheless, drug resistance to available chemotherapeutic agents is still a serious problem, and the development of new active compounds remains a constant need. Taking advantage of the molecular hybridization approach, in the present work we designed, synthesized, and tested the cytotoxic activity of two hybrid compounds and seven derivatives based on the structure of combretastatin A-4 and 2,3-diphenyl-2H-indazole. Practical modifications of reported synthetic protocols for 2-pheny-2H-indazole and 2,3-dipheny-2H-indazole derivatives under microwave irradiation were implemented. The cytotoxicity assays showed that our designed hybrid compounds possess strong activity, especially compound 5, which resulted even better than the reference drug cisplatin against HeLa and SK-LU-1 cells (IC50 of 0.16 and 6.63 µM, respectively), and it had similar potency to the reference drug imatinib against K562 cells. Additionally, in silico and in vitro studies strongly suggest tubulin as the molecular target for hybrid compound 5.
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Affiliation(s)
- Jaime Pérez-Villanueva
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
- Correspondence: (J.P.-V.); (L.Y.-M.); Tel.: +52-5-54-83-72-59 (J.P.-V.); Fax: +52-5-55-94-79-29 (J.P.-V.)
| | - Félix Matadamas-Martínez
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
- Maestría y Doctorado en Ciencias Farmacéuticas, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico
| | - Lilián Yépez-Mulia
- Unidad de Investigación Médica en Enfermedades Infecciosas y Parasitarias, UMAE Hospital de Pediatría, Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México 06720, Mexico
- Correspondence: (J.P.-V.); (L.Y.-M.); Tel.: +52-5-54-83-72-59 (J.P.-V.); Fax: +52-5-55-94-79-29 (J.P.-V.)
| | - Vadim Pérez-Koldenkova
- Laboratorio Nacional de Microscopía Avanzada, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México 06720, Mexico;
| | - Martha Leyte-Lugo
- Catedrático CONACYT Comisionado a Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (M.L.-L.); (I.G.-S.)
| | - Karen Rodríguez-Villar
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana (UAM), Ciudad de México 04960, Mexico;
| | - Francisco Cortés-Benítez
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
| | - Ana Perla Macías-Jiménez
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
| | - Ignacio González-Sánchez
- Catedrático CONACYT Comisionado a Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (M.L.-L.); (I.G.-S.)
| | - Ariana Romero-Velásquez
- Maestría en Ciencias Biológicas, Universidad Nacional Autónoma de México (UNAM), Ciudad de México 04510, Mexico;
| | - Juan Francisco Palacios-Espinosa
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
| | - Olivia Soria-Arteche
- Departamento de Sistemas Biológicos, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Xochimilco (UAM-X), Ciudad de México 04960, Mexico; (F.M.-M.); (F.C.-B.); (A.P.M.-J.); (J.F.P.-E.); (O.S.-A.)
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4
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Huanosta-Murillo E, Alcántara-Hernández M, Hernández-Rico B, Victoria-Acosta G, Miranda-Cruz P, Domínguez-Gómez MA, Jurado-Santacruz F, Patiño-López G, Pérez-Koldenkova V, Palma-Guzmán A, Licona-Limón P, Fuentes-Pananá EM, Lemini-López A, Bonifaz LC. NLRP3 Regulates IL-4 Expression in TOX + CD4 + T Cells of Cutaneous T Cell Lymphoma to Potentially Promote Disease Progression. Front Immunol 2021; 12:668369. [PMID: 34220814 PMCID: PMC8244903 DOI: 10.3389/fimmu.2021.668369] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/31/2021] [Indexed: 11/27/2022] Open
Abstract
In cutaneous T cell lymphoma (CTCL), a dominant Th2 profile associated with disease progression has been proposed. Moreover, although the production and regulation of IL-4 expression during the early stages of the disease may have important implications in later stages, these processes are poorly understood. Here, we demonstrate the presence of TOX+ CD4+ T cells that produce IL-4+ in early-stage skin lesions of CTCL patients and reveal a complex mechanism by which the NLRP3 receptor promotes a Th2 response by controlling IL-4 production. Unassembled NLRP3 is able to translocate to the nucleus of malignant CD4+ T cells, where it binds to the human il-4 promoter. Accordingly, IL-4 expression is decreased by knocking down and increased by promoting the nuclear localization of NLRP3. We describe a positive feedback loop in which IL-4 inhibits NLRP3 inflammasome assembly, thereby further increasing its production. IL-4 induced a potentially malignant phenotype measured based on TOX expression and proliferation. This mechanism of IL-4 regulation mediated by NLRP3 is amplified in late-stage CTCL associated with disease progression. These results indicate that NLRP3 might be a key regulator of IL-4 expression in TOX+ CD4+ T cells of CTCL patients and that this mechanism might have important implications in the progression of the disease.
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Affiliation(s)
- Enrique Huanosta-Murillo
- Unidad de Investigación Médica en Inmunoquímica, Hospital de Especialidades Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.,Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Marcela Alcántara-Hernández
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, United States
| | - Brenda Hernández-Rico
- Unidad de Investigación Médica en Inmunoquímica, Hospital de Especialidades Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico.,Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | | | - Patricia Miranda-Cruz
- Departamento de Biología Celular, Centro de Investigación y Estudios Avanzados, Instituto Politécnico Nacional, Mexico City, Mexico
| | | | - Fermín Jurado-Santacruz
- Centro Dermatológico Dr. Ladislao de la Pascua, Secretaría de Salud de la Ciudad de México, Mexico City, Mexico
| | - Genaro Patiño-López
- Laboratorio de Investigación en Inmunología y Proteómica, Sección de Biología Celular de Linfocitos, Unidad de Hemato-Oncología e Investigación Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Vadim Pérez-Koldenkova
- Laboratorio Nacional de Microscopía Avanzada, División de Desarrollo de la Investigación, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Alam Palma-Guzmán
- Laboratorio de Histología, Coordinación de Investigación en Salud, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Paula Licona-Limón
- Departamento de Biología Celular y del Desarrollo, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Ezequiel M Fuentes-Pananá
- Unidad de Investigación en Virología y Cáncer, Hospital Infantil de México Federico Gómez, Mexico City, Mexico
| | - Alicia Lemini-López
- Servicio de Dermatología, Hospital de Especialidades Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Laura C Bonifaz
- Unidad de Investigación Médica en Inmunoquímica, Hospital de Especialidades Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City, Mexico
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5
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Zluhan-Martínez E, Pérez-Koldenkova V, Ponce-Castañeda MV, Sánchez MDLP, García-Ponce B, Miguel-Hernández S, Álvarez-Buylla ER, Garay-Arroyo A. Beyond What Your Retina Can See: Similarities of Retinoblastoma Function between Plants and Animals, from Developmental Processes to Epigenetic Regulation. Int J Mol Sci 2020; 21:E4925. [PMID: 32664691 PMCID: PMC7404004 DOI: 10.3390/ijms21144925] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/29/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022] Open
Abstract
The Retinoblastoma protein (pRb) is a key cell cycle regulator conserved in a wide variety of organisms. Experimental analysis of pRb's functions in animals and plants has revealed that this protein participates in cell proliferation and differentiation processes. In addition, pRb in animals and its orthologs in plants (RBR), are part of highly conserved protein complexes which suggest the possibility that analogies exist not only between functions carried out by pRb orthologs themselves, but also in the structure and roles of the protein networks where these proteins are involved. Here, we present examples of pRb/RBR participation in cell cycle control, cell differentiation, and in the regulation of epigenetic changes and chromatin remodeling machinery, highlighting the similarities that exist between the composition of such networks in plants and animals.
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Affiliation(s)
- Estephania Zluhan-Martínez
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
- Posgrado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, Av. Universidad 3000, Coyoacán 04510, Mexico
| | - Vadim Pérez-Koldenkova
- Laboratorio Nacional de Microscopía Avanzada, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtémoc, 330. Col. Doctores, Alc. Cuauhtémoc 06720, Mexico;
| | - Martha Verónica Ponce-Castañeda
- Unidad de Investigación Médica en Enfermedades Infecciosas, Centro Médico Nacional SXXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - María de la Paz Sánchez
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
| | - Berenice García-Ponce
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
| | - Sergio Miguel-Hernández
- Laboratorio de Citopatología Ambiental, Departamento de Morfología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Campus Zacatenco, Calle Wilfrido Massieu Esquina Cda, Manuel Stampa 07738, Mexico;
| | - Elena R. Álvarez-Buylla
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
| | - Adriana Garay-Arroyo
- Laboratorio de Genética Molecular, Epigenética, Desarrollo y Evolución de Plantas, Instituto de Ecología, Universidad Nacional Autónoma de Mexico, 3er Circuito Ext. Junto a J. Botánico, Ciudad Universitaria, UNAM 04510, Mexico; (E.Z.-M.); (M.d.l.P.S.); (B.G.-P.)
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