Clustering Single-Cell RNA Sequence Data Using Information Maximized and Noise-Invariant Representations

Area of Science:

• Computational Biology
• Genomics
• Bioinformatics

Background:

• Single-cell RNA sequencing (scRNA-seq) provides high-resolution transcriptome data but faces challenges from high dimensionality, sparsity, and noise.
• Existing clustering methods struggle with these data characteristics, limiting the accuracy of cell type identification and biological insights.
• Dropout events, common in scRNA-seq, exacerbate data sparsity and complicate downstream analysis.

Purpose of the Study:

• To develop a novel deep clustering method for scRNA-seq data that overcomes computational challenges.
• To learn informative and noise-invariant representations from scRNA-seq data.
• To improve the efficiency and accuracy of scRNA-seq data clustering.

Main Methods:

• Proposes sc-INDC (Single-Cell Information Maximized Noise-Invariant Deep Clustering), a deep neural network architecture.
• Employs information maximization and noise-invariant learning principles to extract robust features.
• Designed for efficient representation learning with significantly lower time complexity compared to existing methods.

Main Results:

• Demonstrates superior clustering performance across fourteen diverse scRNA-seq datasets.
• Achieves effective noise reduction and enhances the quality of learned data representations.
• t-SNE visualizations and ablation studies confirm the model's improved representation ability.

Conclusions:

• sc-INDC offers a powerful and efficient solution for scRNA-seq data clustering.
• The method effectively addresses noise and sparsity, leading to more accurate biological interpretations.
• The proposed approach advances the field of single-cell data analysis and computational biology.