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THE EFFECT OF A GROWTH-RETARDING FACTOR FROM NORMAL TISSUES ON SPONTANEOUS CANCER OF MICE

J B Murphy1, E Sturm

  • 1Laboratories of The Rockefeller Institute for Medical Research.

The Journal of Experimental Medicine
|October 30, 2009
PubMed

Insights

Desiccated embryo skin and placenta extracts significantly reduced cancer recurrence in mice after surgery. These extracts also inhibited tumor growth and prevented new tumor formation in treated animals.

Area of Science:

  • Oncology
  • Developmental Biology

Background:

  • Spontaneous cancers in mice present a challenge for local recurrence post-surgical removal.
  • Investigating biological extracts for anti-cancer properties is crucial for therapeutic development.

Purpose of the Study:

  • To evaluate the efficacy of desiccated homologous embryo skin and placenta extracts in preventing local recurrence and inhibiting tumor growth in mice with spontaneous cancer.
  • To assess the impact of these extracts on tumor regression and the development of new malignant foci.

Main Methods:

  • Surgical removal of spontaneous tumors in mice.
  • Application of desiccated homologous embryo skin and placenta extracts to surgical sites.
  • Assessment of autograft growth after contact with extracts.
  • Intraperitoneal administration of extracts to tumor-bearing mice.
  • Monitoring tumor growth, regression, absorption, and development of new foci.

Main Results:

  • Marked decrease in postoperative local recurrence rates after surgical removal of tumors.
  • Autografts showed failed growth or significantly retarded subsequent growth after contact with extracts.
  • Cessation of growth in over two-thirds of established tumors following intraperitoneal injection.
  • Tumor regression and complete absorption observed in a significant percentage of treated animals (>20% absorbed).
  • Reduced incidence of new malignant foci development in treated mice compared to controls.

Conclusions:

  • Desiccated homologous embryo skin and placenta extracts demonstrate significant potential in controlling local recurrence and inhibiting tumor progression in a mouse cancer model.
  • These findings suggest a therapeutic role for embryo and placenta-derived extracts in cancer management, warranting further investigation.

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