Related Experiment Video

Updated: May 30, 2026

Genome-Wide Mapping of Histone Modifications and Transcription Factor Binding Sites in Neuroendocrine Small Cell Lung Cancer Cell Lines Using CUT&RUN
11:50

Genome-Wide Mapping of Histone Modifications and Transcription Factor Binding Sites in Neuroendocrine Small Cell Lung Cancer Cell Lines Using CUT&RUN

Published on: April 3, 2026

Characterization of the cell of origin for small cell lung cancer

Kwon-Sik Park1, Mei-Chih Liang, David M Raiser

  • 1Department of Genetics, Stanford University, Palo Alto, CA, USA.

Cell Cycle (Georgetown, Tex.)
|August 9, 2011
PubMed

Insights

Small cell lung cancer (SCLC) originates from neuroendocrine cells in the lung. Genetic deletion of Rb and p53 in these cells triggers SCLC development in mice.

Area of Science:

  • Oncology
  • Cell Biology
  • Genetics

Background:

  • Small cell lung cancer (SCLC) is an aggressive neuroendocrine lung cancer with high mortality.
  • Identifying the cell of origin for SCLC is crucial for understanding its development and for therapeutic strategies.

Purpose of the Study:

  • To investigate the cell of origin for small cell lung cancer (SCLC) using a mouse genetics model.

Main Methods:

  • Deletion of Rb and p53 tumor suppressor genes in the lung epithelium of adult mice.
  • Analysis of tumor development and cellular composition in the generated mouse model.

Main Results:

  • SCLC tumors in mice frequently originated in the lung epithelium, specifically near neuroendocrine cells.
  • Early tumor lesions were predominantly composed of proliferating neuroendocrine cells.
  • Deletion of Rb and p53 in non-neuroendocrine lung cells did not lead to SCLC development.

Conclusions:

  • These findings strongly suggest that neuroendocrine cells are the cell of origin for small cell lung cancer.
  • The study provides critical insights into the cellular basis of SCLC tumorigenesis.

More Related Videos

Isolation and Characterization of a Head and Neck Squamous Cell Carcinoma Subpopulation Having Stem Cell Characteristics11:28

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

Published on: May 11, 2016

Semi-automatic PD-L1 Characterization and Enumeration of Circulating Tumor Cells from Non-small Cell Lung Cancer Patients by Immunofluorescence10:29

Semi-automatic PD-L1 Characterization and Enumeration of Circulating Tumor Cells from Non-small Cell Lung Cancer Patients by Immunofluorescence

Published on: August 14, 2019

Related Concept Videos

Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
Cancers Originate from Somatic Mutations in a Single Cell02:21

Cancers Originate from Somatic Mutations in a Single Cell

Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
Cancer Stem Cells and Tumor Maintenance02:40

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...