Mecanismos moleculares implicados en el procesamiento de la amilina humana y su relación con las complicaciones de la Diabetes Mellitus Tipo 2
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2025
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11/11/2024
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Universidad Complutense de Madrid
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La amilina es una hormona co-secretada con la insulina en la célula β pancreática. Aunque es una proteína con una secuencia peptídica muy conservada, en ciertas especies como los humanos (hIAPP) o los gatos, presenta determinados aminoácidos en la región variable que le confieren capacidades amiloidogénicas, lo que le permite formar agregados de tipo β-amiloide (similares a los encontrados en el cerebro de pacientes diagnosticados con la enfermedad de Alzheimer). Esta característica es fundamental en un contexto diabético en el que, la célula β pancreática se ve obligada a sintetizar más insulina y en consecuencia más amilina, que empieza a formar agregados en su interior. Estos agregados alteran la homeostasis celular ya que tienen la capacidad de anclarse a las bicapas lipídicas de diferentes orgánulos y estructuras, formando poros, poniendo en riesgo la supervivencia celular...
Amylin is a hormone co-secreted with insulin in the pancreatic β-cell. Although it is a protein with a highly conserved peptide sequence, in certain species like humans (hIAPP) or cats, it has specific amino acids in the variable region that confer amyloidogenic capabilities, allowing it to form β-amyloid aggregates (similar to those found in the brains of patients diagnosed with Alzheimer's disease). This characteristic is crucial in a diabetic context where the pancreatic β-cell is forced to synthesize more insulin and consequently more amylin, which begins to form aggregates within it. These aggregates disrupt cellular homeostasis as they can anchor to the lipid bilayers of various organelles and structures, forming pores, thus endangering cell survival...
Amylin is a hormone co-secreted with insulin in the pancreatic β-cell. Although it is a protein with a highly conserved peptide sequence, in certain species like humans (hIAPP) or cats, it has specific amino acids in the variable region that confer amyloidogenic capabilities, allowing it to form β-amyloid aggregates (similar to those found in the brains of patients diagnosed with Alzheimer's disease). This characteristic is crucial in a diabetic context where the pancreatic β-cell is forced to synthesize more insulin and consequently more amylin, which begins to form aggregates within it. These aggregates disrupt cellular homeostasis as they can anchor to the lipid bilayers of various organelles and structures, forming pores, thus endangering cell survival...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Farmacia, leída el 11-11-2024











