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Prediction of YY1 loop anchor based on multi-omics features.

Jun Ren1, Zhiling Guo2, Yixuan Qi3

  • 1Yangtze Delta Region Institute (Quzhou), University of Electronic Science and Technology of China, Quzhou, China; School of Mathematics and Statistics, Hainan Normal University, Haikou, China.

Methods (San Diego, Calif.)
|November 9, 2024
PubMed
Summary

Researchers developed a LightGBM model to predict YY1-loop anchors, crucial for gene regulation. The model accurately identifies these chromatin loop anchors, revealing key influencing factors like transcription factor co-binding.

Keywords:
Enhancer-promoter interactionsLoop anchorMulti-omicsYY1

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Area of Science:

  • Molecular Biology
  • Genomics
  • Bioinformatics

Background:

  • The three-dimensional chromatin structure is essential for gene expression regulation.
  • Transcription factor YY1 facilitates enhancer-promoter interactions, similar to CTCF.
  • Identifying YY1 binding sites that function as loop anchors remains challenging.

Purpose of the Study:

  • To develop a predictive model for YY1-loop anchors using multi-omics data.
  • To identify key features influencing the formation of YY1-mediated chromatin loops.

Main Methods:

  • A LightGBM machine learning model was employed for prediction.
  • Multi-omics data integration was utilized to train and test the model.
  • Area Under the Precision-Recall Curve (AUPRC) was used to evaluate classifier performance due to imbalanced datasets.

Main Results:

  • The LightGBM model demonstrated strong predictive performance with AUPRC ≥ 0.93.
  • The model showed robustness and good performance on both training and independent test sets (4:1 ratio).
  • Feature importance analysis revealed that co-binding of CTCF, SMC3, and RAD21, alongside histone modifications and sequence context, are primary drivers of YY1-loop anchor formation.

Conclusions:

  • The developed LightGBM model effectively predicts YY1-loop anchors.
  • The study highlights the critical role of specific transcription factor co-binding and epigenetic features in establishing chromatin loops mediated by YY1.