Related Experiment Video
Updated: May 6, 2026
Therapy Testing in a Spheroid-based 3D Cell Culture Model for Head and Neck Squamous Cell Carcinoma
Published on: April 20, 2018
Clinical trial design for testing the stem cell model for the prevention and treatment of cancer
Rishindra M Reddy1, Madhuri Kakarala, Max S Wicha
1Medical Center, University of Michigan, 1500 E. Medical Center Drive, 2120 Taubman Center, Ann Arbor, MI 48109, USA. reddyrm@med.umich.edu.
Abstract:
The cancer stem cell model introduces new strategies for the prevention and treatment of cancers. In cancers that appear to follow the stem cell model, pathways such as Wnt, Notch and Hedgehog may be targeted with natural compounds such as curcumin or drugs to reduce the risk of initiation of new tumors. Disease progression of established tumors could also potentially be inhibited by targeting the tumorigenic stem cells alone, rather than aiming to reduce overall tumor size. These new approaches mandate a change in the design of clinical trials and biomarkers chosen for efficacy assessment for preventative, neoadjuvant, adjuvant, and palliative treatments. Cancer treatments could be evaluated by assessing stem cell markers before and after treatment. Targeted stem cell specific treatment of cancers may not result in "complete" or "partial" responses radiologically, as stem cell targeting may not reduce the tumor bulk, but eliminate further tumorigenic potential. These changes are discussed using breast, pancreatic, and lung cancer as examples.
Insights
Cancer stem cell targeting offers novel prevention and treatment strategies. This approach focuses on eliminating tumor-initiating cells, potentially changing clinical trial designs and efficacy assessments for better cancer control.
Area of Science:
- Oncology
- Cancer Biology
- Stem Cell Research
Background:
- The cancer stem cell (CSC) model provides a new framework for understanding cancer development and progression.
- This model suggests that a subset of cancer cells possesses stem-like properties, driving tumor initiation and recurrence.
- Targeting CSCs presents a promising avenue for more effective cancer therapies.
Purpose of the Study:
- To explore novel strategies for cancer prevention and treatment based on the cancer stem cell model.
- To discuss the implications of targeting cancer stem cells for clinical trial design and biomarker selection.
- To examine the potential of targeting cancer stem cells in breast, pancreatic, and lung cancers.
Main Methods:
- Review of current understanding of the cancer stem cell model.
- Discussion of signaling pathways (Wnt, Notch, Hedgehog) involved in cancer stem cell function.
- Analysis of natural compounds (e.g., curcumin) and drugs for targeting cancer stem cells.
- Consideration of changes in clinical trial design and biomarker assessment.
Main Results:
- Targeting key pathways like Wnt, Notch, and Hedgehog with compounds such as curcumin may reduce new tumor formation.
- Inhibiting disease progression by targeting tumorigenic stem cells directly, rather than solely reducing tumor bulk.
- Proposed shift in clinical trial evaluation, focusing on stem cell markers rather than traditional radiological responses.
- Potential for targeted CSC therapy to eliminate tumorigenic potential without significant reduction in tumor size.
Conclusions:
- The cancer stem cell model necessitates a paradigm shift in cancer treatment and prevention strategies.
- Targeting cancer stem cells offers a promising approach to overcome treatment resistance and prevent recurrence.
- Future clinical trials and biomarker strategies must adapt to evaluate the efficacy of CSC-targeted therapies effectively.
