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G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
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Some receptors remain unoccupied even when an agonist produces a maximal response. Such empty ones are called spare receptors. In presence of spare receptors the maximum effect of an agonist drug is achieved with fewer than 100% of the receptors being occupied. To determine the presence of spare receptors, scientists often compare the concentration of the drug needed to produce 50% of the maximum effect (EC50) with the concentration of the drug needed to occupy 50% of the receptors (Kd). If the...
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Cell-surface receptors, also known as transmembrane receptors, are cell surface, membrane-anchored (integral) proteins that bind to external ligand molecules. This type of receptor spans the plasma membrane and performs signal transduction, converting an extracellular signal into an intracellular signal. Ligands that interact with cell-surface receptors do not have to enter the cell that they affect. Cell-surface receptors are also called cell-specific proteins or markers because they are...
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Un receptor para todas las ocasiones

Darrell J Irvine1

  • 1David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA; Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA; The Ragon Institute of MGH, Massachusetts Institute of Technology and Harvard University, 400 Technology Square, Cambridge, Massachusetts 02139, USA; Center for HIV/AIDS Vaccine Immunology and Immunogen Discovery, La Jolla, CA 92037, USA; Howard Hughes Medical Institute, Chevy Chase, Maryland 20815, USA.

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Resumen
Este resumen es generado por máquina.

Los científicos diseñaron receptores sintéticos de Notch para controlar la señalización celular. Este avance permite la gestión independiente de las entradas y salidas celulares en varios tipos de células.

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Área de la Ciencia:

  • Biología celular
  • Biología sintética
  • Biotecnología

Sus antecedentes:

  • Los receptores de superficie celular median la comunicación entre las células y su entorno.
  • La ingeniería de receptores con entradas y salidas controlables independientes de las vías celulares naturales sigue siendo un desafío significativo.

Objetivo del estudio:

  • Desarrollar un nuevo sistema para la ingeniería de receptores de superficie celular.
  • Lograr un control independiente tanto de las entradas como de las salidas de los receptores de ingeniería.

Principales métodos:

  • Utilizó receptores sintéticos Notch como base para el sistema diseñado.
  • Demostró la funcionalidad del sistema en diversos tipos de células.

Principales resultados:

  • Se ha creado con éxito un sistema que permite el control independiente de las entradas y salidas de los receptores.
  • Los receptores diseñados funcionan ortogonalmente a las vías de señalización endógenas.

Conclusiones:

  • El sistema de receptores sintéticos Notch desarrollado ofrece una herramienta poderosa para el control preciso de las funciones celulares.
  • Esta tecnología tiene amplias implicaciones para las terapias basadas en células y las aplicaciones de biología sintética.