Integrated OMICs unveil the bone-marrow microenvironment in human leukemia

Area of Science:

• Hematology
• Cancer Biology
• Bioinformatics

Background:

• The bone marrow (BM) niche regulates adult hematopoiesis through stromal components.
• Understanding BM niche dynamics is crucial for hematological malignancies like acute myeloid leukemia (AML).

Purpose of the Study:

• To analyze BM environmental compartments and their interactions in AML xenografts using multi-omics.
• To identify functional gene clusters and stromal interrelationships under homeostatic and diseased conditions.
• To pinpoint early disease-onset deregulated genes and signaling nodes in the BM niche during AML progression.

Main Methods:

• Multi-omics analysis (transcriptomics, proteomics) of BM xenografts.
• Computational tools for analyzing BM environmental compartments.
• Proximity-based molecular profiling.
• Integration of transcriptomic and proteomic data.

Main Results:

• Identified eight functional gene clusters defining cellular identity and function within the BM niche.
• Characterized transcriptomic profile changes during human AML development.
• Discovered early deregulated genes in the mesenchymal compartment using proximity-based methods.
• Predicted key signaling nodes involved in AML-induced niche alterations by integrating proteomic and transcriptomic data.

Conclusions:

• The study provides a comprehensive multi-omics map of the BM niche in AML.
• Identified specific molecular players and pathways altered in the BM niche during AML.
• Offers potential therapeutic targets for AML by understanding niche-specific alterations.