Related Experiment Video
Updated: Jun 19, 2026

07:18
Isolation and Characterization of Tumor-initiating Cells from Sarcoma Patient-derived Xenografts
Published on: June 13, 2019
THE DEMONSTRATION OF A TUMOR GROWTH-INHIBITING FACTOR FROM NORMAL HUMAN CONNECTIVE TISSUE
1Department of Surgery, The University of Rochester School of Medicine and Dentistry, Rochester, N. Y.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Human connective tissue extracts significantly inhibited Rat Tumor 256 growth in 66% of animals. Muscle tissue extracts showed no tumor-inhibiting effects, suggesting connective tissue
Area of Science:
- Oncology
- Tissue Biology
- Experimental Pathology
Background:
- Normal human connective tissue may possess anti-tumor properties.
- Investigating the potential of tissue extracts in cancer research is crucial.
Purpose of the Study:
- To determine the effect of human connective tissue (rectus sheath) and muscle tissue extracts on the growth of Rat Tumor 256.
- To evaluate the potential of normal human tissues as a source of anti-cancer agents.
Main Methods:
- Grafts of Rat Tumor 256 were transplanted into test animals.
- Animals were treated with extracts from normal human rectus sheath tissue.
- Control groups received no treatment or extracts from normal human muscle tissue.
Main Results:
- Rectus sheath extracts completely inhibited tumor growth in 66% of animals.
- Marked growth retardation was observed in 15% of animals, with smaller tumors compared to controls.
- 19% of animals showed initial growth retardation, but tumors eventually surpassed control sizes.
Conclusions:
- Normal human connective tissue extracts demonstrate significant tumor-inhibitory effects against Rat Tumor 256.
- Human muscle tissue extracts did not exhibit similar anti-tumor activity.
- These findings suggest a potential therapeutic role for connective tissue components in cancer treatment.

