An Orthotopic Sciatic Nerve Xenograft for Neurofibromatosis Type 1 Neurofibromas

作者： Manuela Ye*1,2, Aurélien Bore*2, Sophie Richon3, Virginie Dangles-Marie3,4, Eric Pasmant1,4,5, Raphaël Margueron2, Mikael Hivelin6,7 1Institut Cochin, Inserm U1016, CNRS UMR8104, Université Paris Cité, CARPEM, 2Institut Curie, INSERM U934/CNRS UMR 3215, Paris Sciences et Lettres Research University,Sorbonne University, 3Laboratory of preclinical investigation, Translational Research Department, Institut Curie,PSL Research University, 4Faculty of Pharmaceutical and Biological Sciences,Paris Cité University, 5Genetics Department,Institut Curie, 6Department of Plastic Surgery, Hôpital Ambroise Paré,APHP (Assistance Publique-Hôpitaux de Paris), 7Université Versailles Saint Quentin en Yvelines

简介：

Overview

This study develops a preclinical model for neurofibromas, benign tumors associated with neurofibromatosis type 1. The model utilizes intraneural injection of human Schwann cells into NSG mice, allowing for the evaluation of therapeutic strategies.

Key Study Components

Area of Science

• Neuroscience
• Oncology
• Pharmacology

Background

• Neurofibromatosis type 1 (NF1) is characterized by benign peripheral nerve sheath tumors.
• Current treatment options are limited and often associated with toxicity and resistance.
• There is a need for effective preclinical models to test new therapeutic compounds.
• This study addresses the challenge of creating an orthotopic intradural graft of human cells.

Purpose of Study

• To establish a reliable preclinical model for studying neurofibromas.
• To facilitate the screening of new pharmacological treatments.
• To better understand the tumor microenvironment necessary for neurofibroma growth.

Methods Used

• Intraneural injection of human Schwann cells into the sciatic nerve of NSG mice.
• Preparation of a sterile surgical field and careful dissection to avoid blood vessel damage.
• Monitoring tumor growth using bioluminescence imaging.
• Histological analysis with hematoxylin and eosin staining to confirm tumor presence.

Main Results

• Successful engraftment of tumors was confirmed by bioluminescence imaging.
• Visible tumor mass was observed at the sciatic nerve by day 33.
• Histological analysis showed dense cellularity and focal invasion of tumor tissue.
• The model provides a platform for evaluating new therapeutic strategies.

Conclusions

• The developed model effectively mimics human neurofibromas.
• This model can be utilized for screening new compounds and understanding tumor biology.
• Further research is needed to explore potential treatments for neurofibromas.

Frequently Asked Questions