Video Experimental Relacionado
Updated: Apr 4, 2026
08:25
Continuous Measurement of Biological Noise in Escherichia Coli Using Time-lapse Microscopy
Published on: April 27, 2021
4.2K
Biología sintética. Oscilaciones genéticas emergentes en un consorcio microbiano sintético
Ye Chen1, Jae Kyoung Kim2, Andrew J Hirning1
1Department of Biosciences, Rice University, Houston, TX 77005, USA.
Science (New York, N.Y.)
|August 29, 2015
Resumen
La biología sintética permite sistemas microbianos cooperativos. Los investigadores diseñaron dos cepas que, cuando se combinan, exhiben oscilaciones emergentes a nivel de población, allanando el camino para los tejidos sintéticos.
Área de la Ciencia:
- Biología sintética
- Consorcios microbianos
- Biología de sistemas
Sus antecedentes:
- Los sistemas microbianos cooperativos requieren señalización celular para comportamientos a nivel de población.
- La biología sintética tiene como objetivo diseñar funciones biológicas complejas utilizando células diseñadas.
Objetivo del estudio:
- Para construir un consorcio microbiano sintético con dos tipos de células distintas.
- Para diseñar comportamientos emergentes a nivel de población en un sistema de múltiples cepas.
Principales métodos:
- Diseñado una cepa microbiana "activadora" y una "represora".
- Se utilizan moléculas ortogonales de señalización celular para la regulación de la expresión génica entre cepas.
- Construyó un circuito genético que abarcaba ambas cepas.
Principales resultados:
- Las dos cepas diseñadas generaron oscilaciones emergentes a nivel de población exclusivamente cuando se cultivaron conjuntamente.
- Las topologías de red específicas del circuito sintético demostraron una mayor robustez de oscilación.
- Dinámica programada a nivel de población a través de la ingeniería genética.
Conclusiones:
- Los sistemas microbianos cooperativos diseñados pueden exhibir comportamientos emergentes a nivel de población.
- La capacidad de programar la dinámica de múltiples cepas es crucial para desarrollar tejidos y órganos sintéticos.
Más Videos Relacionados
07:00Visualization and Analysis of mRNA Molecules Using Fluorescence In Situ Hybridization in Saccharomyces cerevisiae
Published on: June 14, 2013
35.7K
08:28Creating Rapid Oxygen Oscillations in Microbial Single-cell Growth Analysis using a Microfluidic Double-layer Device
Published on: July 18, 2025
644
Videos de Conceptos Relacionados
01:28Gene Regulation in Microbial Communities: Quorum Sensing
893
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
893
02:55Synthetic Biology
5.8K
Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...
Golden rice
Golden rice is a genetically modified...
5.8K
01:29Coordination of Gene Expression Processes in Bacteria
976
The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
976
01:28Global Regulatory Systems
901
Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
901
01:23Operon Model
2.1K
The operon model represents a fundamental mechanism of gene regulation in prokaryotes, enabling coordinated expression of genes involved in related metabolic or functional pathways. Operons consist of structural genes, a promoter, and an operator, with transcription regulated by repressors, activators, and small effector molecules.Structure and Function of OperonsAn operon is a cluster of structural genes transcribed together under the control of a single promoter. The promoter region...
2.1K
01:26Evolutionary Processes in Microbes
101
Microbial evolution occurs rapidly due to short generation times and a variety of genetic processes, including horizontal gene transfer, mutation, recombination, and genetic drift. These mechanisms collectively enable microbes to adapt swiftly to changing environments.Horizontal gene transfer (HGT) allows genes to move between different species and occurs through three main mechanisms: conjugation, transformation, and transduction. Conjugation involves direct cell-to-cell contact for DNA...
101