What question did this study set out to answer?

The study aims to investigate how hematopoietic stem cells (HSCs) can target breast cancer stem cells (CSCs) through immune microenvironment modification.

May 7, 2026

Hematopoietic Stem Cell Tropism Mediated Targeting of Breast Cancer Stem Cells via Alteration of Tumor Immune‐Microenvironment

Key Points

The study aims to investigate how hematopoietic stem cells (HSCs) can target breast cancer stem cells (CSCs) through immune microenvironment modification.
Proteomics of migrated HSCs toward TNBC-CSCs and MCF-7 cells was conducted to evaluate protein expression.
Metabolomics analysis was performed on HSC-conditioned medium-treated CSCs and MCF-7 cells to assess growth effects.
Cell cycle progression and mitochondrial bioenergetics were analyzed post-treatment.
IL-7 and Notch expression was significantly upregulated in HSCs that migrated toward CSCs.
HSC-conditioned medium treatment arrested TNBC-CSC growth and altered their cell cycle progression.
The study suggests leveraging HSCs could enhance personalized therapy targeting CSCs in TNBC.

Abstract

subpopulations within the cancer microenvironment. Proteomics of migrated HSCs toward TNBC-CSCs/MCF-7 cells revealed significant upregulation of IL-7, Notch, and other proteins involved in T cell activation and migration pathways. Metabolomics of HSC-conditioned medium (HSC-CM)-treated CSCs/MCF-7 cells further demonstrated that HSC-CM arrests TNBC-CSC growth and cell cycle progression by altering the mitochondrial bioenergetics. This study highlights the potential of leveraging both HSCs and HSC-derived factors for personalized therapies targeting CSCs in TNBC.

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