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Meza-León A, Montoya-Estrada A, Reyes-Muñoz E, Romo-Yáñez J. Diabetes Mellitus and Pregnancy: An Insight into the Effects on the Epigenome. Biomedicines 2024; 12:351. [PMID: 38397953 PMCID: PMC10886464 DOI: 10.3390/biomedicines12020351] [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: 11/16/2023] [Revised: 12/17/2023] [Accepted: 01/08/2024] [Indexed: 02/25/2024] Open
Abstract
Worldwide, diabetes mellitus represents a growing health problem. If it occurs during pregnancy, it can increase the risk of various abnormalities in early and advanced life stages of exposed individuals due to fetal programming occurring in utero. Studies have determined that maternal conditions interfere with the genotypes and phenotypes of offspring. Researchers are now uncovering the mechanisms by which epigenetic alterations caused by diabetes affect the expression of genes and, therefore, the development of various diseases. Among the numerous possible epigenetic changes in this regard, the most studied to date are DNA methylation and hydroxymethylation, as well as histone acetylation and methylation. This review article addresses critical findings in epigenetic studies involving diabetes mellitus, including variations reported in the expression of specific genes and their transgenerational effects.
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Affiliation(s)
| | | | | | - José Romo-Yáñez
- Coordinación de Endocrinología Ginecológica y Perinatal, Instituto Nacional de Perinatología, Montes Urales 800, Lomas Virreyes, Mexico City 11000, Mexico
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Domínguez-Castro M, Domínguez-Galicia A, Pérez-Pérez O, Hernández-Pineda J, Mancilla-Herrera I, Bazán-Tejeda ML, Rodríguez-Cruz L, González-Torres MC, Montoya-Estrada A, Reyes-Muñoz E, Romo-Yáñez J. Hyperglycemia affects neuronal differentiation and Nestin, FOXO1, and LMO3 mRNA expression of human Wharton's jelly mesenchymal stem cells of children from diabetic mothers. Biochem Biophys Res Commun 2022; 637:300-307. [DOI: 10.1016/j.bbrc.2022.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022]
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Romo-Yáñez J, Sevilla-Montoya R, Pérez-González E, Flores-Reyes J, Laresgoiti-Servitje E, Espino-Sosa S, Domínguez-Castro M, Razo-Aguilera G, Hidalgo-Bravo A, Aguinaga-Ríos M. AZFa, AZFb, AZFc and gr/gr Y-chromosome microdeletions in azoospermic and severe oligozoospermic patients, analyzed from a neural network perspective. CIR CIR 2022; 90:202-209. [DOI: 10.24875/ciru.20001058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Romo-Yáñez J, Rodríguez-Martínez G, Aragón J, Siqueiros-Márquez L, Herrera-Salazar A, Velasco I, Montanez C. Embryonic neural stem/progenitor cells as model to characterize dystrophin and dystrophin-associated proteins expression during neuronal or astrocytic differentiation. MethodsX 2021; 8:101325. [PMID: 34430234 PMCID: PMC8374367 DOI: 10.1016/j.mex.2021.101325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 03/22/2021] [Indexed: 11/19/2022] Open
Abstract
Neural stem/progenitor cells (NSPC) are multipotent cells that renew themselves and could differentiate into neurons and macro glia (astrocytes and oligodendrocytes) of the nervous system during embryonic development. Duchenne muscular dystrophy is a severe type of muscular dystrophy caused by mutations in the dmd gene, and one-third of patients cursed with neuro-cognitive impairments. In this data article, we take advantage of the differentiation capacity of NSPC as a model to increase our knowledge in the neuronal and/or astrocytic differentiation and to evaluate the expression of dystrophins and dystrophin-associated proteins. We showed the characterization of undifferentiated and neuron and/or astrocyte differentiated NSPC. In addition, we evaluated the expression and subcellular localization of dystrophins and β-dystroglycan in undifferentiated NSPC and differentiated to neurons and astrocytes.Primary culture of NSPC was characterized by the expression of multipotent markers nestin and Sox2. Neuronal or astrocytic differentiation of NSPC was performed by basic fibroblast growth factor (FGF2) withdrawal, histamine or ciliary neurotrophic factor (CNTF) treatment, and expression of βIII-tubulin or glial fibrillary acidic protein (GFAP) as differentiation markers for neurons or astrocytes was evaluated. This study will contribute to the understanding of dystrophins and dystrophin-associated proteins expression and function during neuronal or astrocytic differentiation of NSPC
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Affiliation(s)
- José Romo-Yáñez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados (Cinvestav), Ciudad de México, Mexico
- Present address: Coordinación de Endocrinología Ginecológica y Perinatal, Instituto Nacional de Perinatología, Ciudad de México, Mexico
| | - Griselda Rodríguez-Martínez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados (Cinvestav), Ciudad de México, Mexico
- Instituto de Fisiología Celular-Neurociencias, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
| | - Jorge Aragón
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados (Cinvestav), Ciudad de México, Mexico
| | - Lourdes Siqueiros-Márquez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados (Cinvestav), Ciudad de México, Mexico
| | - Alma Herrera-Salazar
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados (Cinvestav), Ciudad de México, Mexico
| | - Iván Velasco
- Instituto de Fisiología Celular-Neurociencias, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico
- Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía, Ciudad de México, Mexico
| | - Cecilia Montanez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados (Cinvestav), Ciudad de México, Mexico
- Corresponding author.
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Paúl-González S, Aragón J, Rodríguez-Martínez G, Romo-Yáñez J, Montanez C. Differential expression of Dp71 and Dp40 isoforms in proliferating and differentiated neural stem cells: Identification of Dp40 splicing variants. Biochem Biophys Res Commun 2021; 560:152-158. [PMID: 33989907 DOI: 10.1016/j.bbrc.2021.03.142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 03/25/2021] [Indexed: 11/29/2022]
Abstract
Dp71 and Dp40 are the main products of the DMD gene in the central nervous system, and they are developmentally regulated from the early stages of embryonic development to adulthood. To further study the roles of Dp71 and Dp40 during cell proliferation and neural differentiation, we analyzed Dp71/Dp40 isoform expression at the mRNA level by RT-PCR assays to identify alternative splicing (AS) in the isoforms expressed in rat neural stem/progenitor cells (NSPCs) and in differentiated cells (neurons and glia). We found that proliferating NSPCs expressed Dp71d, Dp71dΔ71, Dp71f, Dp71fΔ71, Dp71dΔ74 and Dp40, as well as two Dp40 isoforms: Dp40Δ63,64 and Dp40Δ64-67. In differentiated cells we also found the expression of Dp71d, Dp71dΔ71, Dp71f, Dp71fΔ71 and Dp40. However, the expression frequencies were different in both stages. In addition, in differentiated cells, we found Dp71fΔ71-74, and interestingly, we did not find the expression of Dp71dΔ74 or the newly identified Dp40 isoforms. In this work we show that NSPC differentiation is accompanied by changes in Dp71/Dp40 isoform expression, suggesting different roles for these isoforms in NSPCs proliferation and neuronal differentiation, and we describe, for the first time, alternative splicing of Dp40.
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Affiliation(s)
- Sandra Paúl-González
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, 07360, Ciudad de México, Mexico
| | - Jorge Aragón
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, 07360, Ciudad de México, Mexico
| | - Griselda Rodríguez-Martínez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, 07360, Ciudad de México, Mexico
| | - José Romo-Yáñez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, 07360, Ciudad de México, Mexico
| | - Cecilia Montanez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional 2508, Col. San Pedro Zacatenco, 07360, Ciudad de México, Mexico.
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Godines-Enriquez MS, Miranda-Velásquez S, Enríquez-Pérez MM, Arce-Sánchez L, Martínez-Cruz N, Flores-Robles CM, Aguayo-González P, Morales-Hernández FV, Villarreal-Barranca A, Suárez-Rico BV, Montoya-Estrada A, Romo-Yáñez J, Reyes-Muñoz E. Prevalence of Thyroid Autoimmunity in Women with Recurrent Pregnancy Loss. Medicina (Kaunas) 2021; 57:96. [PMID: 33499017 PMCID: PMC7912215 DOI: 10.3390/medicina57020096] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/16/2021] [Accepted: 01/19/2021] [Indexed: 11/17/2022]
Abstract
Background and objectives: Thyroid autoimmunity (TAI) has been associated with a significantly increased risk of miscarriage in women with recurrent pregnancy loss (RPL). The aim of this study was to determine the prevalence of TAI in women with RPL and compare the clinical characteristics of positive and negative TAI women. Materials and Methods: This is a retrospective cross-sectional study; 203 women with RPL were included. Thyroid profile, anti-thyroid peroxidase (TPO-Ab), and anti-thyroglobulin (TG-Ab) antibodies were measured in all participants. Clinical characteristics and causes of RPL were compared between positive and negative TAI. Results: Prevalence of TAI was 14.8%; prevalence of positive TPO-Ab and TG-Ab was 12.3% and 4.9%, respectively. Women with TAI had significantly higher concentrations of thyrotropin (TSH) compared to women without TAI (4.8 ± 3.8 versus 3.1 ± 1.1, p = 0.001). There was no significant difference in age, the number of gestations, miscarriages, state of antiphospholipid antibodies (aPL), or causes of RPL between women that were TAI-positive versus TAI-negative. Prevalence of positive TAI by cause of RPL was: endocrine 7/25 (28%), genetic 1/5 (20%), autoimmune 1/5 (20%), anatomic 8/55 (14.5%), and unexplained cause 13/112 (11.6%). Conclusions: The prevalence of TAI in women with RPL is 14.8%. Women with an endocrine cause have the highest prevalence of TAI.
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Affiliation(s)
| | - Silvia Miranda-Velásquez
- Reproductive Gynecology Department, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (S.M.-V.); (P.A.-G.); (F.V.M.-H.)
| | | | - Lidia Arce-Sánchez
- Department of Endocrinology, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (L.A.-S.); (N.M.-C.); (C.M.F.-R.)
| | - Nayeli Martínez-Cruz
- Department of Endocrinology, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (L.A.-S.); (N.M.-C.); (C.M.F.-R.)
| | - Claudia Montserrat Flores-Robles
- Department of Endocrinology, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (L.A.-S.); (N.M.-C.); (C.M.F.-R.)
| | - Patricia Aguayo-González
- Reproductive Gynecology Department, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (S.M.-V.); (P.A.-G.); (F.V.M.-H.)
| | - Fela Vanessa Morales-Hernández
- Reproductive Gynecology Department, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (S.M.-V.); (P.A.-G.); (F.V.M.-H.)
| | - Alma Villarreal-Barranca
- Coordination of Education and Research, Hospital de la Mujer, Ministry of Health, Mexico City 11340, Mexico;
| | - Blanca Vianey Suárez-Rico
- Direction of Research, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico;
| | - Araceli Montoya-Estrada
- Coordination of Gynecological and Perinatal Endocrinology, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (A.M.-E.); (J.R.-Y.)
| | - José Romo-Yáñez
- Coordination of Gynecological and Perinatal Endocrinology, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (A.M.-E.); (J.R.-Y.)
| | - Enrique Reyes-Muñoz
- Coordination of Gynecological and Perinatal Endocrinology, National Institute of Perinatology, Ministry of Health, Mexico City 11000, Mexico; (A.M.-E.); (J.R.-Y.)
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Velasco M, Ortiz-Huidobro RI, Larqué C, Sánchez-Zamora YI, Romo-Yáñez J, Hiriart M. Sexual dimorphism in insulin resistance in a metabolic syndrome rat model. Endocr Connect 2020; 9:890-902. [PMID: 33069157 PMCID: PMC7583132 DOI: 10.1530/ec-20-0288] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 08/14/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVE We assessed the sex-specific differences in the molecular mechanisms of insulin resistance in muscle and adipose tissue, in a MS rat model induced by a high sucrose diet. METHODS Male, female, and ovariectomized female Wistar rats were randomly distributed in control and high-sucrose diet (HSD) groups, supplemented for 24 weeks with 20% sucrose in the drinking water. At the end, we assessed parameters related to MS, analyzing the effects of the HSD on critical nodes of the insulin signaling pathway in muscle and adipose tissue. RESULTS At the end of the treatment, HSD groups of both sexes developed obesity, with a 15, 33 and 23% of body weight gain in male, female, and OVX groups respectively, compared with controls; mainly related to hypertrophy of peripancreatic and gonadal adipose tissue. They also developed hypertriglyceridemia, and liver steatosis, with the last being worse in the HSD females. Compared to the control groups, HSD rats had higher IL1B and TNFA levels and insulin resistance. HSD females were more intolerant to glucose than HSD males. Our observations suggest that insulin resistance mechanisms include an increase in phosphorylated AKT(S473) form in HSD male and female groups and a decrease in phosphorylated P70S6K1(T389) in the HSD male groups from peripancreatic adipose tissue. While in gonadal adipose tissue the phosphorylated form of AKT decreased in HSD females, but not in HSD males. Finally, HSD groups showed a reduction in p-AKT levels in gastrocnemius muscle. CONCLUSION A high-sucrose diet induces MS and insulin resistance with sex-associated differences and in a tissue-specific manner.
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Affiliation(s)
- Myrian Velasco
- Neuroscience Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Correspondence should be addressed to M Velasco or M Hiriart: or
| | - Rosa Isela Ortiz-Huidobro
- Neuroscience Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos Larqué
- Department of Embryology and Genetics, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Yuriko Itzel Sánchez-Zamora
- Neuroscience Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - José Romo-Yáñez
- Department of Gynecological and Perinatal Endocrinology, Instituto Nacional de Perinatología ‘Isidro Espinosa de los Reyes’, Mexico City, Mexico
| | - Marcia Hiriart
- Neuroscience Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Correspondence should be addressed to M Velasco or M Hiriart: or
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Romo-Yáñez J, Rodríguez-Martínez G, Aragón J, Siqueiros-Márquez L, Herrera-Salazar A, Velasco I, Montanez C. Characterization of the expression of dystrophins and dystrophin-associated proteins during embryonic neural stem/progenitor cell differentiation. Neurosci Lett 2020; 736:135247. [DOI: 10.1016/j.neulet.2020.135247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 07/05/2020] [Accepted: 07/10/2020] [Indexed: 10/23/2022]
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Romo-Yáñez J, Domínguez-Castro M, Flores-Reyes JS, Estrada-Juárez H, Mancilla-Herrera I, Hernández-Pineda J, Bazan-Tejeda ML, Aguinaga-Ríos M, Reyes-Muñoz E. Hyperglycemia differentially affects proliferation, apoptosis, and BNIP3 and p53 mRNA expression of human umbilical cord Wharton's jelly cells from non-diabetic and diabetic pregnancies. Biochem Biophys Res Commun 2018; 508:1149-1154. [PMID: 30554659 DOI: 10.1016/j.bbrc.2018.12.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 12/05/2018] [Indexed: 01/25/2023]
Abstract
Diabetes in pregnancy constitutes an unfavorable environment for embryonic and fetal development, where the child has a higher risk of perinatal morbidity and mortality, with high incidence of congenital malformations and predisposition to long-term metabolic diseases that increase with a hypercaloric diet. To analyze whether hyperglycemia differentially affects proliferation, apoptosis, and mRNA expression in cells from children of normoglycemic pregnancies (NGPs) and diabetes mellitus pregnancies (DMPs), we used umbilical cord Wharton jelly cells as a research model. Proliferation assays were performed to analyze growth and determine the doubling time, and the rate of apoptosis was determined by flow cytometry-annexin-V assays. AMPK, BNIP3, HIF1α, and p53 mRNA gene expression was assessed by semi-quantitative RT-PCR. We found that hyperglycemia decreased proliferation in a statistically significant manner in NGP cells treated with 40 mM D-glucose and in DMP cells treated with 30 and 40 mM D-glucose. Apoptosis increased in hyperglycemic conditions in NGP and DMP cells. mRNA expression of BNIP3 and p53 was significantly increased in cells from DMPs but not in cells from NGPs. We found evidence that maternal irregular metabolic conditions, like diabetes with hyperglycemia in culture, affect biological properties of fetal cells. These observations could be a constituent of fetal programming.
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Affiliation(s)
- José Romo-Yáñez
- Departamento de Genética y Genómica Humana, INPer, Mexico City, Mexico; Coordinación de Endocrinología Ginecológica y Perinatal, INPer, Mexico.
| | - Mauricio Domínguez-Castro
- Departamento de Genética y Genómica Humana, INPer, Mexico City, Mexico; Departamento de Fisiologia y Desarrollo Celular, INPer, Mexico
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Aragón J, Martínez-Herrera A, Romo-Yáñez J, Ceja V, Azotla-Vilchis C, Siqueiros-Márquez L, Soid-Raggi G, Herrera-Salazar A, Montañez C. Identification of Dp71 Isoforms Expressed in PC12 Cells: Subcellular Localization and Colocalization with β-Dystroglycan and α1-Syntrophin. J Mol Neurosci 2015; 58:201-9. [DOI: 10.1007/s12031-015-0657-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 09/14/2015] [Indexed: 11/24/2022]
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Aragón J, Romo-Yáñez J, Martínez-Herrera A, Ceja V, Rendon A, Montañez C. Characterization of Dp71Δ(78-79), a novel dystrophin mutant that stimulates PC12 cell differentiation. J Neurochem 2011; 119:697-707. [PMID: 21668890 DOI: 10.1111/j.1471-4159.2011.07347.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dp71 has an important role in the central nervous system. To better understand the function of Dp71 domains in neuronal differentiation, PC12 cells were stably transfected with a dystrophin mutant, Dp71Δ(78-79) , which lacks exons 78 and 79. Based on the percentage of cells bearing neurites and neurite length analyses, we found that cells stably expressing Dp71Δ(78-79) (PC12-C11) differentiate more efficiently than non-transfected cells. While wild-type cells reach their maximum differentiation 9-12 days after initiating the differentiation process, the PC12-C11 cells reach differentiation in 4-6 days. Protein expression analysis showed a down-regulation of Dp71a and an up-regulation of Dp71ab and/or Up71, β-dystroglycan and neuron-specific enolase in undifferentiated and in neural growth factor differentiated PC12-C11 cells. No change was observed in the expression of Grb2 and Up400. The subcellular localization of Dp71Δ(78-79) was in the cell periphery, and there was no change in localization during the differentiation process, which was also observed throughout the neurite extensions.
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Affiliation(s)
- Jorge Aragón
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, México, DF, México
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Romo-Yáñez J, Ceja V, Ilarraza-Lomelí R, Coral-Vázquez R, Velázquez F, Mornet D, Rendón A, Montañez C. Dp71ab/DAPs complex composition changes during the differentiation process in PC12 cells. J Cell Biochem 2007; 102:82-97. [PMID: 17390338 DOI: 10.1002/jcb.21281] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PC12 cells express different Dp71 isoforms originated from alternative splicing; one of them, Dp71ab lacks exons 71 and 78. To gain insight into the function of Dp71 isoforms we identified dystrophin associated proteins (DAPs) that associate in vivo with Dp71ab during nerve growth factor (NGF) induced differentiation of PC12 cells. DAPs expression was analyzed by RT-PCR, Western blot and indirect immunofluorescence, showing the presence of each mRNA and protein corresponding to alpha-, beta-, gamma-, delta-, and epsilon-sarcoglycans as well as zeta-sarcoglycan mRNA. Western blot analysis also revealed the expression of beta-dystroglycan, alpha1-syntrophin, alpha1-, and beta-dystrobrevins. We have established that Dp71ab forms a complex with beta-dystroglycan, alpha1-syntrophin, beta-dystrobrevin, and alpha-, beta- and gamma-sarcoglycans in undifferentiated PC12 cells. In differentiated PC12 cells, the complex composition changes since Dp71ab associates only with beta-dystroglycan, alpha1-syntrophin, beta-dystrobrevin, and delta-sarcoglycan. Interestingly, neuronal nitric oxide synthase associates with the Dp71ab/DAPs complex during NGF treatment, raising the possibility that Dp71ab may be involved in signal transduction events during neuronal differentiation.
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Affiliation(s)
- J Romo-Yáñez
- Departamento de Genética y Biología Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Avenida Instituto Politécnico Nacional 2508, Apartado Postal 14-740, C.P. 07000, Ciudad de México, México
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