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Updated: Aug 6, 2025
Isolation and Functional Assessment of Human Breast Cancer Stem Cells from Cell and Tissue Samples
Published on: October 2, 2020
Silicon nanowire array overcomes chemotherapeutic resistance by inducing the differentiation of breast cancer stem
Xiaotong Wang1, Sisi Liu2, Wei Zhang1
1College of Chemistry & Materials Science, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding, People's Republic of China.
Abstract:
Currently, traditional cancer treatment strategies are greatly challenged by the existence of cancer stem cells (CSCs), which are root cause of chemotherapy resistance. Differentiation therapy presents a novel therapeutic strategy for CSC-targeted therapy. However, there are very few studies on the induction of CSCs differentiation so far. Silicon nanowire array (SiNWA) with many unique properties is considered to be an excellent material for various applications ranging from biotechnology to biomedical applications. In this study, we report the SiNWA differentiates MCF-7-derived breast CSCs (BCSCs) into non-CSCs by modulating the morphology of cells. In vitro, the differentiated BCSCs lose the stemness properties and thus become sensitive to chemotherapeutic drugs, eventually leading to the death of BCSCs. Therefore, this work suggests a potential approach for overcoming chemotherapeutic resistance.
Insights
Silicon nanowire arrays (SiNWA) offer a novel approach to cancer treatment by inducing differentiation in chemotherapy-resistant breast cancer stem cells (BCSCs). This differentiation makes BCSCs sensitive to drugs, potentially overcoming treatment resistance.
Area of Science:
- Biomedical Engineering
- Materials Science
- Oncology
Background:
- Cancer stem cells (CSCs) drive chemotherapy resistance, challenging traditional cancer treatments.
- Differentiation therapy is a promising strategy for targeting CSCs, but induction methods are limited.
- Silicon nanowire arrays (SiNWA) possess unique properties suitable for biomedical applications.
Purpose of the Study:
- To investigate the potential of SiNWA in inducing differentiation of breast CSCs (BCSCs).
- To evaluate if SiNWA-mediated differentiation can restore sensitivity to chemotherapy in BCSCs.
- To explore SiNWA as a tool for overcoming chemotherapeutic resistance.
Main Methods:
- Utilized silicon nanowire array (SiNWA) to modulate the morphology of MCF-7-derived BCSCs.
- Assessed stemness properties of BCSCs in vitro after SiNWA treatment.
- Evaluated the sensitivity of differentiated BCSCs to chemotherapeutic drugs.
Main Results:
- SiNWA successfully induced differentiation of BCSCs into non-CSCs.
- Differentiated BCSCs exhibited loss of stemness properties.
- The differentiated BCSCs became sensitive to chemotherapeutic agents, leading to cell death.
Conclusions:
- SiNWA can effectively differentiate BCSCs, thereby reducing their stemness.
- This differentiation process re-sensitizes cancer stem cells to chemotherapy.
- SiNWA presents a potential therapeutic strategy to overcome chemotherapy resistance in breast cancer.
