Video Experimental Relacionado

Updated: Jan 30, 2026

Functional Assessment of BRCA1 variants using CRISPR-Mediated Base Editors

Functional Assessment of BRCA1 variants using CRISPR-Mediated Base Editors

Published on: February 28, 2021

Editores de bases de citosina TadA de alta eficiencia para el modelado preciso de variantes de enfermedades humanas

Wei Qin¹, Sheng-Jia Lin¹, Yu Zhang¹

¹Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA.

Nature biomedical engineering

|January 28, 2026

Resumen

Nuevos editores de bases (TCBE-Umax) diseñan con precisión variantes genéticas en peces cebra, permitiendo la evaluación funcional rápida de variantes de significado incierto (VUS) relacionadas con la pérdida de audición hereditaria.

Área de la Ciencia:

Genética
Biología Molecular
Biología del Desarrollo

Sus antecedentes:

Muchas variantes genéticas carecen de una clasificación clara, lo que dificulta el diagnóstico clínico.
La edición de bases CRISPR ofrece una introducción precisa de variantes, pero enfrenta limitaciones de eficiencia y direccionamiento.

Objetivo del estudio:

Desarrollar una plataforma de edición de bases eficiente y versátil para la genómica funcional en peces cebra.
Evaluar la patogenicidad de variantes de significado incierto (VUS) asociadas con la pérdida de audición hereditaria.

Principales métodos:

Se diseñaron editores de bases de citosina derivados de TadA (TCBE-Umax) para mejorar la eficiencia y reducir el sesgo en peces cebra.
Se lograron altas tasas de edición bialélica en peces cebra F0 para un análisis fenotípico rápido.
Se evaluaron 15 VUS relacionados con la pérdida de audición hereditaria utilizando la plataforma TCBE-Umax.

Principales resultados:

TCBE-Umax demostró una mayor eficiencia de edición, una compatibilidad PAM ampliada y efectos fuera de objetivo minimizados.
La edición bialélica eficiente permitió la evaluación funcional rápida de VUS en peces cebra.
El análisis fenotípico determinó con éxito la patogenicidad de los VUS probados.

Conclusiones:

TCBE-Umax proporciona una herramienta potente y versátil para estudios funcionales in vivo de variantes genéticas.
Esta plataforma acelera la determinación de la patogenicidad de VUS, ayudando en la investigación de enfermedades genéticas.
Los editores de bases desarrollados son cruciales para avanzar en la genómica funcional y el modelado de enfermedades.

Palabras clave:

edición de bases genómica funcional modelado de enfermedades peces cebra variantes de significado incierto

Más Videos Relacionados

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila

Published on: August 20, 2019

Efficient PAM-Less Base Editing for Zebrafish Modeling of Human Genetic Disease with zSpRY-ABE8e

Efficient PAM-Less Base Editing for Zebrafish Modeling of Human Genetic Disease with zSpRY-ABE8e

Published on: February 17, 2023

Videos de Conceptos Relacionados

Histone Variants at the Centromere

Histone Variants at the Centromere

Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...

Uncertainty in Measurement: Accuracy and Precision

Uncertainty in Measurement: Accuracy and Precision

Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value.

DNA Base Pairing

DNA Base Pairing

Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,

Accuracy and Precision

Accuracy and Precision

Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value. Highly accurate...

The Precise Definition of a Limit

The Precise Definition of a Limit

Understanding the formal definition of a limit is essential for precise mathematical analysis. This concept allows us to rigorously determine how a function behaves near a particular point without relying on ambiguous notions such as "getting close." The ε-δ definition plays a foundational role in calculus, ensuring analytical clarity and logical consistency in limit evaluation.The formal definition states that the limit of a function f(x) as x approaches a is L, written asif for...

Production Efficiency

Production Efficiency

Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).