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Related Concept Videos

Clinical Applications of Epidermal Stem Cells01:19

Clinical Applications of Epidermal Stem Cells

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Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
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Distinctive Features of Adult Stem Cells vs Cancer Stem Cells01:18

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A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...
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Cancer Stem Cells and Tumor Maintenance02:40

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Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
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Adult Stem Cells01:33

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Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously...
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Embryonic Stem Cells00:58

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Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
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Embryonic Stem Cells00:57

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Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...
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Updated: Feb 9, 2026

Physiologic Patient Derived 3D Spheroids for Anti-neoplastic Drug Screening to Target Cancer Stem Cells
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Exploring the cancer stem cell phenotype with high-throughput screening applications.

Heiko Wurdak1

  • 1Leeds Institute of Molecular Medicine, University of Leeds, St James's University Hospital, Beckett Street, Leeds, LS9 7TF, UK. h.wurdak@leeds.ac.uk

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Cancer stem cells (CSCs) drive tumor growth and therapy resistance. High-throughput screens identify factors controlling CSCs, offering new avenues for cancer drug discovery.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Drug Discovery

Background:

  • Human cancers exhibit cellular diversity with varying tumor-driving potential.
  • Cancer stem cells (CSCs) are a distinct cell population identified within tumors.
  • CSCs are crucial for tumor initiation and are linked to therapeutic resistance.

Purpose of the Study:

  • To review functional chemical and RNAi screens for identifying CSC phenotype regulators.
  • To discuss experimental strategies, challenges, and perspectives in CSC drug discovery.

Main Methods:

  • Focus on functional chemical screens.
  • Utilized RNA interference (RNAi) screens.
  • Employed high-throughput screening technologies for CSC characterization.

Main Results:

  • Identified key factors that regulate the cancer stem cell phenotype.
  • Highlighted the role of CSCs in tumor initiation and treatment resistance.

Conclusions:

  • CSCs are clinically relevant targets for cancer therapy.
  • Advancements in screening technologies facilitate CSC biology research.
  • Understanding CSC regulation is critical for developing novel cancer drugs.