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Challenges in modeling EWS-FLI1-driven transgenic mouse model for Ewing sarcoma.

Balaji Ramachandran¹, Thangarajan Rajkumar¹, Gopal Gopisetty¹

¹Department of Molecular Oncology, Cancer Institute (W.I.A) No. 38, Sardar Patel Road, Adyar, Chennai 600036, India.

American Journal of Translational Research

|December 27, 2021

Summary

Developing targeted therapies for Ewing sarcoma (ES) is crucial, but EWS-FLI1-driven mouse models have faced challenges. This review explores limitations and alternatives for advancing EWS-FLI1 inhibitor development.

Keywords:

EWS-FLI1 Ewing sarcoma fusion protein mouse models progenitor cells tumor cell of origin

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Area of Science:

Oncology
Molecular Biology
Genetics

Background:

Ewing sarcoma (ES) oncogenesis is driven by the EWS-FLI1 fusion protein, a key therapeutic target.
Despite extensive research on EWS-FLI1's role, effective targeted inhibitors remain elusive.
Current therapeutic strategies for ES are limited due to the lack of specific inhibitors targeting EWS-FLI1.

Purpose of the Study:

To review the current challenges and limitations in developing EWS-FLI1-driven preclinical models for Ewing sarcoma.
To identify reasons for the limited success of previous attempts in creating human-like ES mouse models.
To explore potential interim alternatives for accelerating the development of EWS-FLI1 targeted therapeutic inhibitors.

Main Methods:

Literature review of scientific publications on EWS-FLI1, Ewing sarcoma pathogenesis, and preclinical model development.
Analysis of reported limitations and challenges in establishing EWS-FLI1-driven in vivo systems.
Exploration of alternative strategies and their potential clinical relevance.

Main Results:

Significant information exists on EWS-FLI1 translocation, pathogenesis, and function.
Past attempts to create EWS-FLI1-driven human-like ES mouse models have yielded limited success.
The development of reliable preclinical models is hindered by various technical and biological challenges.

Conclusions:

Establishing robust EWS-FLI1-driven preclinical models is critical for advancing targeted therapies in ES.
Understanding the limitations of past model development is essential for future research.
Exploring and validating interim alternatives may expedite the discovery of novel EWS-FLI1 inhibitors.