Esta página ha sido traducida por una máquina. Otras páginas pueden seguir apareciendo en inglés. View in English

El péptido que interfiere con el dominio de trimización inhibe la formación de condensados EML4-ALK, la señalización dependiente de la fusión y el crecimiento celular

  • 0Department of Molecular Genetics and Microbiology, University of Florida College of Medicine, Gainesville, FL 32610.

|

|

Resumen

Este resumen es generado por máquina.

Se dirige a la proteína de fusión EML4-ALK

Área De La Ciencia

  • Biología celular
  • Oncología molecular
  • La biofísica

Sus Antecedentes

  • Los condensados biomoleculares son cruciales para las funciones celulares.
  • La desregulación de los condensados está relacionada con enfermedades como el cáncer.
  • La proteína de fusión EML4-ALK forma condensados oncogénicos que impulsan la progresión del cáncer.

Objetivo Del Estudio

  • Investigar el papel del dominio de trimización (TD) en la formación de condensado EML4-ALK.
  • Desarrollar una estrategia para interrumpir los condensados EML4-ALK.
  • Evaluar el impacto de la interrupción del condensado en la señalización y la proliferación del cáncer.

Principales Métodos

  • Diseñado un inhibidor de péptidos dirigido al dominio de trimización EML4-ALK.
  • Disrupción del autoensamblaje de EML4-ALK y disolución inducida del condensado.
  • Utilizó células derivadas de tumores de pulmón de pacientes para experimentos.

Principales Resultados

  • El dominio de trimización es esencial para la formación de condensado EML4-ALK.
  • Interrupción mediada por péptidos de los condensados EML4-ALK disueltos.
  • La interrupción redujo significativamente la señalización impulsada por EML4-ALK y la proliferación celular.

Conclusiones

  • Dirigirse a las interacciones proteína-proteína dentro de los condensados es una estrategia terapéutica viable.
  • Interrumpir el ensamblaje del condensado oncogénico puede atenuar la señalización del cáncer.
  • Este enfoque ofrece una nueva vía para el tratamiento del cáncer.

Videos de Conceptos Relacionados

Mitogens and the Cell Cycle 02:38

6.6K

Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...

The JAK-STAT Signaling Pathway 01:20

9.2K

Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...

Abnormal Proliferation 02:23

4.6K

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...

Interactions Between Signaling Pathways 01:19

6.4K

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...

Eukaryotic Transcription Inhibitors 01:52

10.0K

Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a...

Intracellular Signaling Affects Focal Adhesions 01:17

2.8K

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...