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Cis-regulatory Sequences02:02

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Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
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Cooperative Binding of Transcription Regulators02:13

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Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome.  Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
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Updated: Jan 18, 2026

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Dbert2_LR: Un modelo basado en aprendizaje profundo para predecir elementos cis-regulatorios en cultivos

Huan Liu1, Faxu Guo2, Longyu Huang3

  • 1Institute of Agricultural Information, Chinese Academy of Agricultural Sciences / Key Laboratory of Agricultural Big Data, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; National Nanfan Research Institute, Chinese Academy of Agriculture Science (CAAS), Sanya 572024, China; National Agriculture Science Data Center, Beijing 100081, China.

Genomics
|January 16, 2026
PubMed
Resumen

Desarrollamos Dbert2_LR, una herramienta de aprendizaje profundo para identificar elementos cis-regulatorios (CREs) en genomas complejos de plantas. Esto ayuda a comprender la expresión génica para la mejora de cultivos.

Palabras clave:
elementos cis-regulatoriosaprendizaje profundointerpretabilidadsistema de predicción

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Área de la Ciencia:

  • Genómica
  • Bioinformática
  • Biología Computacional

Sus antecedentes:

  • Los elementos cis-regulatorios (CREs) controlan la expresión génica y son vitales para los rasgos agronómicos.
  • Identificar CREs en genomas de cultivos grandes y repetitivos como el algodón es difícil.

Objetivo del estudio:

  • Desarrollar un marco de aprendizaje profundo de alta precisión para identificar CREs en genomas de cultivos.
  • Mejorar la anotación funcional de genomas complejos de plantas.

Principales métodos:

  • Desarrollamos Dbert2_LR, un modelo híbrido de aprendizaje profundo que integra DNABERT-2 con redes RNN y LSTM.
  • Aplicamos el modelo a Arabidopsis thaliana y al algodón de tierras altas para la clasificación de CREs.
  • Realizamos mutagénesis de saturación in silico (ISM) para la interpretabilidad del modelo.

Principales resultados:

  • Dbert2_LR logró una alta precisión en la clasificación de promotores, potenciadores y secuencias no regulatorias.
  • Superó a los modelos de referencia con puntuaciones F1 promediadas macro de 0,890 (Arabidopsis) y 0,637 (algodón).
  • El análisis ISM confirmó la interpretabilidad biológica, vinculando las predicciones con motivos conocidos de unión a factores de transcripción.

Conclusiones:

  • Dbert2_LR es una herramienta poderosa para la anotación funcional de genomas de cultivos.
  • El estudio facilita el diseño de mejora molecular basada en CREs para rasgos de cultivos mejorados.