Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Intracellular Signaling Cascades01:24

Intracellular Signaling Cascades

53.6K
Once a ligand binds to a receptor, the signal is transmitted through the membrane and into the cytoplasm. The continuation of a signal in this manner is called signal transduction. Signal transduction only occurs with cell-surface receptors, which cannot interact with most components of the cell, such as DNA. Only internal receptors can interact directly with DNA in the nucleus to initiate protein synthesis. When a ligand binds to its receptor, conformational changes occur that affect the...
53.6K
Rab Cascades01:25

Rab Cascades

3.6K
Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
3.6K
Amplifying Signals via Enzymatic Cascade01:22

Amplifying Signals via Enzymatic Cascade

18.6K
When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze...
18.6K
MAPK Signaling Cascades01:07

MAPK Signaling Cascades

8.5K
Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
8.5K
Cascaded Op Amps01:16

Cascaded Op Amps

1.1K
Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
1.1K
Predicting Molecular Geometry02:27

Predicting Molecular Geometry

46.0K
VSEPR Theory for Determination of Electron Pair Geometries
46.0K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Predicting protein cascade expression from H&E images.

PLoS computational biology·2026
Same author

Gene-Morphology Alignment via Graph-Constrained Latent Modeling for Molecular Subtype Prediction from Histopathology in Pancreatic Cancer.

medRxiv : the preprint server for health sciences·2026
Same author

Performance of Naiive Spectral Geometric Models in Histopathology AI.

bioRxiv : the preprint server for biology·2026
Same author

Neural Networks as Entropic Systems: Applications in Digital Pathology.

bioRxiv : the preprint server for biology·2026
Same author

Spatial Regression of Morphology-Protein Coupling in Tumour Proteomics.

bioRxiv : the preprint server for biology·2026
Same author

GenBlosum: On Determining Whether Cancer Mutations Are Functional or Random.

Genes·2026
Same journal

Predicting Chemotherapy Response from Staging Laparoscopy Images.

medRxiv : the preprint server for health sciences·2026
Same journal

Development and External Validation of a Machine Learning Model for 10-Year Ischemic Stroke Risk Prediction in Diverse Populations.

medRxiv : the preprint server for health sciences·2026
Same journal

MCH-Guard: Multimodal Machine Learning Framework for Risk Stratification of Cerebral Microhemorrhage Risk in the Alzheimer's Disease Neuroimaging Initiative.

medRxiv : the preprint server for health sciences·2026
Same journal

Genetic and maternal environmental contributions to estimated fetal weight at 20 weeks gestation compared with birthweight.

medRxiv : the preprint server for health sciences·2026
Same journal

Better immediate declarative memory is associated with forgetting during locomotor adaptation in chronic stroke and in older adults.

medRxiv : the preprint server for health sciences·2026
Same journal

An empirical Bayes framework for burden and dispersion association tests helps prioritize rare variants associated with Alzheimer's disease.

medRxiv : the preprint server for health sciences·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Feb 7, 2026

Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli
08:46

Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli

Published on: January 6, 2015

33.6K

Predicción de la Expresión de Cascadas de Proteínas a partir de Imágenes H&E

Alejandro Leyva, Abdul Rehman Akbar, M Khalid Khan Niazi

    medRxiv : the preprint server for health sciences
    |February 6, 2026
    PubMed
    Resumen
    Este resumen es generado por máquina.

    La predicción de la expresión de proteínas aguas abajo en el cáncer es crucial. Un nuevo modelo de IA a nivel celular, CellViT, predice con éxito proteínas de la cascada de apoptosis a partir de imágenes de patología, superando a los enfoques tradicionales a nivel de parche.

    Palabras clave:
    inteligencia artificialpatología computacionalaprendizaje automáticoexpresión de proteínascáncer de mamavisión por computadoraredes neuronales convolucionalesaprendizaje profundoanálisis de imágenes médicasmodelado predictivo

    Más Videos Relacionados

    Author Spotlight: Streamlining Protein Target Prediction and Validation via Molecular Docking and CETSA
    10:21

    Author Spotlight: Streamlining Protein Target Prediction and Validation via Molecular Docking and CETSA

    Published on: February 23, 2024

    3.7K
    A Protocol for Computer-Based Protein Structure and Function Prediction
    16:41

    A Protocol for Computer-Based Protein Structure and Function Prediction

    Published on: November 3, 2011

    69.8K

    Videos de Experimentos Relacionados

    Last Updated: Feb 7, 2026

    Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli
    08:46

    Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli

    Published on: January 6, 2015

    33.6K
    Author Spotlight: Streamlining Protein Target Prediction and Validation via Molecular Docking and CETSA
    10:21

    Author Spotlight: Streamlining Protein Target Prediction and Validation via Molecular Docking and CETSA

    Published on: February 23, 2024

    3.7K
    A Protocol for Computer-Based Protein Structure and Function Prediction
    16:41

    A Protocol for Computer-Based Protein Structure and Function Prediction

    Published on: November 3, 2011

    69.8K

    Área de la Ciencia:

    • Patología computacional
    • Inteligencia artificial en oncología
    • Análisis de datos biomédicos

    Sus antecedentes:

    • La expresión de proteínas en las vías oncogénicas es clave para el desarrollo del cáncer.
    • La predicción de señales de proteínas aguas abajo es esencial para comprender la progresión del cáncer.
    • Los modelos de IA actuales a menudo predicen proteínas individuales, careciendo de información sobre la propagación de la señal.

    Objetivo del estudio:

    • Desarrollar y evaluar un modelo de IA para predecir la expresión de proteínas aguas abajo en el cáncer de mama.
    • Comparar el rendimiento de los Transformers de Visión (ViT) a nivel celular frente a nivel de parche para esta tarea.
    • Evaluar la utilidad de las cascadas de apoptosis y de daño/reparación del ADN (DDR) para predecir la expresión de proteínas.

    Principales métodos:

    • Se utilizaron datos de RPPA (Reverse Phase Protein Array) e imágenes de portaobjetos completos (WSIs) del conjunto de datos TCGA-BRCA.
    • Se desarrolló un modelo ViT a nivel celular (CellViT) y se comparó con modelos ViT a nivel de parche.
    • Se centró en predecir cinco proteínas clave en la cascada de apoptosis, utilizando las cascadas DDR como control.

    Principales resultados:

    • Los modelos ViT a nivel de parche no lograron resultados predictivos estadísticamente significativos (valores de R-cuadrado < 0.1).
    • CellViT demostró capacidades predictivas, logrando valores de R-cuadrado > 0.1 en cinco pliegues de prueba.
    • La cascada de apoptosis, al ser morfológicamente indicativa, arrojó un rendimiento predictivo significativamente mayor que la cascada DDR.

    Conclusiones:

    • Los modelos de IA a nivel celular, como CellViT, son más efectivos que los modelos a nivel de parche para predecir la expresión de proteínas aguas abajo a partir de WSIs.
    • Las vías biológicas morfológicamente relevantes, como la apoptosis, son mejores objetivos para la predicción de la expresión de proteínas impulsada por IA.
    • Este enfoque ofrece una forma novedosa de inferir la señalización de proteínas funcional en el cáncer.