Video Experimental Relacionado
Updated: Jun 21, 2026

07:48
A Method for Lineage Tracing of Corneal Cells Using Multi-color Fluorescent Reporter Mice
Published on: December 18, 2015
17.7K
Imagen del linaje celular con un sistema de registro digital sintético
Ke-Huan K Chow1, Mark W Budde1, Alejandro A Granados1
1Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
Resumen
Desarrollamos intMEMOIR, un nuevo sistema para el registro de linaje in situ. Esta tecnología permite la reconstrucción de las relaciones de linaje celular y la historia clonal en organismos en desarrollo.
Área de la Ciencia:
- Biología del desarrollo
- La genética
- La bioingeniería
Sus antecedentes:
- Las decisiones del destino celular durante el desarrollo están influenciadas por la posición espacial y la historia del linaje.
- El rastreo preciso del linaje es crucial para comprender el desarrollo multicelular.
Objetivo del estudio:
- Diseñar un nuevo sistema genético para el registro de linaje in situ.
- Para permitir la reconstrucción de las relaciones de linaje y la historia clonal en células y tejidos vivos.
Principales métodos:
- Memoria editable por integrasa desarrollada por mutagenesis de ingeniería con lectura óptica in situ (intMEMOIR), un sistema basado en integrasa de serina.
- Utilizó una serie de elementos de memoria genética de tres estados independientes para la recombinación estocástica e irreversible.
- Se aplicó intMEMOIR a células de ratón en cultivo y secciones cerebrales de *Drosophila* para la reconstrucción del linaje.
Principales resultados:
- intMEMOIR reconstruyó con éxito árboles genealógicos en células madre.
- El sistema permitió hasta 59.049 estados digitales distintos, registrando información de linaje in situ.
- Habilitado el análisis simultáneo de la historia clonal de una sola célula, la posición espacial y la expresión génica en secciones cerebrales de *Drosophila*.
Conclusiones:
- intMEMOIR proporciona una poderosa herramienta para el registro de linaje legible por microscopio.
- Esta tecnología establece una base para analizar las relaciones de linaje en diversos sistemas biológicos.
- Facilita una comprensión más profunda de las decisiones del destino celular en el desarrollo multicelular.
Videos de Conceptos Relacionados
Karyotyping
Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
DNA as a Genetic Template
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
Karyotyping
Describing the number and physical features of chromosomes can reveal abnormalities that underlie genetic diseases. This description is facilitated by special staining techniques that produce a particular banding pattern on each chromosome. State-of-the-art techniques make this approach even more powerful, enabling the detection of individual genes that cause disease.A Simple Chromosome Staining Technique Provides Valuable Scientific InsightSome genetic diseases can be detected by looking at...
Genomic Imprinting and Inheritance
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
DNA as a Genetic Template
Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
Genetic Material
Within the human body, a complex and detailed system of trillions of cells works in unison to sustain life. Each cell houses a nucleus, which contains 46 chromosomes divided into 23 pairs. Chromosomes are highly coiled structures made of the genetic material DNA. These chromosomes are essential carriers of genetic information, with half inherited from the mother through her egg and the other half from the father's sperm, combining to create the unique genetic makeup of an individual.

