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In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
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The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
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In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
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In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
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Chemical bonds are complex interactions between two or more atoms or ions, which reduce the potential energy of the molecule. Gilbert N. Lewis developed a model called the Lewis model that simplified the depiction of chemical bond formation and provided straightforward explanations for the chemical bonds seen in most common compounds.
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Updated: Feb 11, 2026

Designing a Bio-responsive Robot from DNA Origami
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Descubriendo las reglas de diseño y montaje para el origami de ARNm-ADN.

Jack Y Wang1, Jared Huzar2, Myoungseok Kim1

  • 1Department of Electrical Engineering and Computer Sciences, University of California─Berkeley, Berkeley, California 94706, United States of America.

Nano letters
|February 10, 2026
PubMed
Resumen

Los investigadores desarrollaron reglas para crear nanoestructuras de origami híbridas de ARNm-ADN. Este avance permite la formación de alto rendimiento de estructuras estables y funcionales de ARN-ADN para aplicaciones de nanotecnología.

Palabras clave:
La nanotecnología del ADN La nanotecnología del ADNEl origami de ADN es un origami de ADN.El ARNm es el ARNm.El ARNm-ADN es el mRNA.autoensamblaje de autoensamblaje.

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Área de la Ciencia:

  • Biotecnología La biotecnología es la biotecnología.
  • Nanotecnología La nanotecnología es la nanotecnología.
  • Biología sintética Biología sintética.

Sus antecedentes:

  • El origami híbrido mRNA-ADN fusiona la funcionalidad del ARN con las nanoestructuras del ADN.
  • Actualmente faltan principios robustos de diseño y montaje para estas estructuras híbridas.

Objetivo del estudio:

  • Para definir sistemáticamente los parámetros para la formación de alto rendimiento de la compacta mRNA-ADN híbrido origami.
  • Establecer reglas de diseño generalizables y un protocolo de síntesis estandarizado.

Principales métodos:

  • Diseñó cinco distintas arquitecturas de origami híbridos de ARNm-ADN utilizando ARNm para la luciferasa, el EGFP y el mCherry.
  • Varios tamaños, formas, geometrías de cruce y densidades de embalaje en los diseños.
  • Utilizado microscopía de fuerza atómica (AFM) para la caracterización estructural.

Principales resultados:

  • Parámetros críticos identificados: cruces asimétricos de forma A, amortiguadores ricos en cationes monovalentes y recocido a temperatura moderada.
  • Estas condiciones suprimen la degradación del ARN y el atrapamiento cinético mientras se mantiene la geometría helicoidal del ARN-ADN.
  • AFM confirmó monodispersa, bien plegado nanoestructuras con precisión a nanoescala.

Conclusiones:

  • Reglas de diseño generalizables establecidas para el origami híbrido ARNm-ADN.
  • Desarrolló un protocolo de síntesis estandarizado para la creación reproducible de estas nanoestructuras.
  • Permite la integración de la funcionalidad del ARN en nanoestructuras programables de ADN con alta fidelidad.