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Cancer Stem Cells and Tumor Maintenance

Cancer Stem Cells and Tumor Maintenance

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...

Cancer Stem Cells and Tumor Maintenance

Cancer Stem Cells and Tumor Maintenance

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...

Targeted Cancer Therapies

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...

Mesenchymal Stem Cells

Mesenchymal Stem Cells

Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their access...

Stem Cell Therapy for Tissue Regeneration

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

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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Related Experiment Video

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Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics

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Lung cancer stem cells: progress and prospects.

Amber Lundin¹, Barbara Driscoll

¹Developmental Biology & Regenerative Medicine Program, Department of Surgery, Children's Hospital Los Angeles, , United States.

|August 22, 2012

Summary

Epithelial stem cells maintain lung tissue and repair injury. In lung cancer, cancer stem cells may originate from these cells, driving disease progression and suggesting targeted therapies.

Keywords:

Cancer stem cells Epithelial stem cells Lung cancer

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Area of Science:

Pulmonary Medicine
Cancer Biology
Stem Cell Research

Background:

Epithelial stem cells are crucial for lung development, maintenance, and repair.
Lung cancer, a leading cause of death, is initiated by specific cells of origin.
The Cancer Stem Cell Hypothesis posits that cancer stem cells drive tumor growth and metastasis.

Purpose of the Study:

To explore the role of lung epithelial stem cells in lung cancer.
To identify potential cell sources and markers for lung cancer stem cells.
To investigate the involvement of developmental and repair pathways in lung tumorigenesis.

Main Methods:

Review of existing literature on lung epithelial stem cells and cancer.
Analysis of stem cell markers (e.g., CD133) and side population analysis in lung cancer.
Examination of signaling pathways (Wnt, Hedgehog, Notch) implicated in lung development, repair, and cancer.

Main Results:

Bronchioalveolar stem cells (BASCs) and alveolar epithelial type II cells (AEC2) are potential lung cancer stem cell reservoirs.
Cells expressing CD133 or side population markers may also harbor lung cancer stem cells.
Aberrant activation of Wnt, Hedgehog, and Notch pathways is observed in lung tumor cells.

Conclusions:

Lung cancer stem cells may arise from various resident stem/progenitor populations.
Targeting stem cell signaling pathways offers a potential therapeutic strategy for lung cancer.