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Updated: Feb 16, 2026

The Organoid Reconstitution Assay ORA for the Functional Analysis of Intestinal Stem and Niche Cells
Published on: November 20, 2017
The malignant niche: safe spaces for toxic stem cell marketing
Douglas Sipp1,2,3,4
1RIKEN Center for Developmental Biology, Kobe, Japan.
Abstract:
Many tumors are sustained by microenvironments, or niches, that support and protect malignant cells, thus conferring a competitive advantage against both healthy cells and therapeutic interventions (for a brief review, see Yao and Link (Stem Cells 35: 3-8, 2017)). The global industry engaged in the commercial promotion of unproven and scientifically implausible cell-based "regenerative" therapies has developed a number of self-protective strategies that support its survival and growth in ways that are broadly analogous to the functions of the malignant niche.
Insights
Tumor microenvironments protect cancer cells, similar to how unproven regenerative therapy industries protect themselves. Both exploit biological principles for survival and growth.
Area of Science:
- Oncology
- Cell Biology
- Regenerative Medicine
Background:
- Tumors rely on supportive microenvironments, termed niches, to protect malignant cells.
- These tumor niches provide a competitive advantage against healthy cells and therapies.
- The commercial promotion of unproven cell-based regenerative therapies is a growing concern.
Purpose of the Study:
- To draw an analogy between the self-protective strategies of the unproven regenerative therapy industry and the functions of the malignant tumor niche.
- To highlight the analogous mechanisms of survival and growth employed by both entities.
Main Methods:
- Literature review and conceptual analysis.
- Comparative analysis of tumor microenvironment functions and industry self-protective strategies.
Main Results:
- The commercial regenerative therapy industry employs strategies analogous to malignant niches.
- These strategies facilitate the survival and growth of unproven therapies.
- This analogy highlights potential parallels in biological and commercial self-preservation.
Conclusions:
- The industry promoting unproven regenerative therapies exhibits self-protective mechanisms similar to tumor microenvironments.
- Understanding these analogous functions is crucial for addressing the proliferation of scientifically implausible treatments.
- Further research is needed to explore the implications of these parallels for patient safety and scientific integrity.
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