Aldrin E. Molero

Dr. Aldrin E. Molero, Ph.D.

Área de investigación

  • My studies are testing the hypothesis that loss of Huntingtin functions during brain development results in region-specific foci of neurons more vulnerable to cell death, thus contributing to Huntington’s disease pathogenesis

Correo electrónico

Teléfono

centro médico

  • Albert Einstein College of Medicine Centro Rose F. Kennedy 1410 Pelham Parkway Sur 401 Bronx, NY 10461


Intereses profesionales

Dr. Aldrin Molero M.D., Ph. D., received his medical degree at the University of Zuila in Venezuela and completed his Ph.D at Albert Einstein College of Medicine. He continues to teach and research with a goal to define the normal roles of Huntingtin in neural stem cell-mediated striatal neurogenesis and the effects of mutant Huntingtin in brain development and Huntington’s disease pathogenesis.

Investigación:

Our limited knowledge of the normal roles of Huntingtin (Htt) in neural structures affected in the disease has contributed to the slow rate of progress in defining Huntington's disease pathogenesis. Several lines of evidence suggest that Htt has important roles in developmental striatal neurogenesis. The purpose of my studies is to define the normal roles of Htt in striatal development. My central hypothesis is that Htt plays pivotal roles in Neural Stem Cell (NSC)-mediated striatal neurogenesis and the functional compartmentalization of the striatum. Furthermore, I postulate that disruption of these Htt-associated neural functions leads to the elaboration of developmentally deregulated medium-size spiny neurons (MSNs) with an enhanced susceptibility to stressors, thus contributing to HD-associated profiles of cellular vulnerability. That is, the abnormal neural development associated to the loss of Huntingtin function, lead to cells that are more susceptible to stress, and thus, to death, thus explaining the regional profiles of neuronal vulnerability displayed by Huntington’s disease. To substantiate this hypothesis, I am performing conditional ablation studies of Htt (employing a floxed Wt-Htt mouse) in selective neural developmental species during embryogenesis and defining the developmental and late-life consequences of these genetic manipulations.

Estos estudios definirán los roles evolutivos específicos de la Htt en el programa de neurogénesis de MSN estriatal mediada por NSC. Además, estos estudios proporcionarán perspectivas importantes sobre los mecanismos que median los perfiles diferenciales de vulnerabilidad neuronal en la EH, especialmente con respecto al rol del mecanismo de pérdida de la función del desarrollo en la patogénesis de la EH. Además, estos estudios tienen el potencial de cambiar el enfoque de la investigación actual al identificar una nueva ventana para el estudio de la patogénesis de la EH y para el desarrollo ulterior de intervenciones restaurativas en un momento en el que aún no se han producido cambios neurodegenerativos irrevocables. Desde una perspectiva más amplia, los conocimientos obtenidos a partir de estos estudios también pueden tener implicaciones importantes para nuestra comprensión de otras enfermedades neurodegenerativas, en particular las asociadas con expansiones anormales de repeticiones.

Publicaciones Seleccionadas

Molero AE., Gokhan S., Gonzalez S., Feig JL., Alexandre L., Mehler MF. Impairment of developmental stem cell-mediated striatal neurogenesis and pluripotency genes in a knock-in model of Huntington’s disease. (2009): Proceedings of the National Academy of Sciences USA. 2009; Proc Natl Acad Sci U S A. 106(51): 21900-21905.

Abrajano JJ, Qureshi IA, Gokhan S, Molero AE, Zheng D, Bergman A, Mehler MF. El correpresor del factor de transcripción silenciador del elemento 1 media preferentemente en las redes genéticas que subyacen a las decisiones sobre el destino de las células madre neuronales. Proc Natl Acad Sci US A. 2010; 107(38): 16685-90
Yung SY, Gokhan S, Jurcsak J, Molero AE, Abrajano JJ, Mehler MF. La modulación diferencial de la señalización de BMP promueve la elaboración de neuronas GABAérgicas corticales cerebrales u oligodendrocitos a partir de una especie progenitora del prosencéfalo ventral sensible al erizo sónico. Proc Natl Acad Sci US A. 2002; 99 (25):16273-8.

Molero AE, Pino-Ramírez G, Maestre GE. Modulation by age and gender of risk for Alzheimer's disease and vascular dementia associated with the apolipoprotein E-epsilon4 allele in Latin Americans: findings from the Maracaibo Aging Study. Neurosci Lett. 2001; 307 (1):5-8.

Molero AE, Pino-Ramirez G, Maestre GE. Altas tasas de demencia en una población caribeña. Neuroepidemiología. 2007; 29(1-2):107-12.

Chacon IJ., Molero AE., Pino-Ramirez G., Luchsinger JA., Lee JH., Maestre GE. Risk of Dementia Associated with Elevated Plasma Homocysteine in a Latin American Population. International Journal of Alzheimer’s Disease. Volume 2009 (2009), Article ID 632489 (Open Access Journal: http://www.sage-hindawi.com/journals/ijad/2009/632489.html).

Molero AE, Altimari CC, Duran DA, Garcia E, Pino-Ramirez G, Maestre GE. Valores de homocisteína plasmática total en sujetos de edad avanzada: hallazgos del Maracaibo Aging Study. Clin Biochem. 2006; 39 (10):1007-15.