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Related Experiment Video

Updated: Jun 4, 2026

Cone Beam Intraoperative Computed Tomography-based Image Guidance for Minimally Invasive Transforaminal Interbody Fusion

Cone Beam Intraoperative Computed Tomography-based Image Guidance for Minimally Invasive Transforaminal Interbody Fusion

Published on: August 6, 2019

An injectable method for noninvasive spine fusion.

Ronke M Olabisi¹, ZaWaunyka Lazard, Michael H Heggeness

¹Department of Bioengineering, Rice University, MS 142, 6100 Main St, Houston, TX 77005, USA.

The Spine Journal : Official Journal of the North American Spine Society

|February 5, 2011

Summary

This summary is machine-generated.

A novel cell-based gene therapy system effectively induces spinal fusion via a single injection, bypassing traditional surgery. This non-invasive method shows high fusion rates in diverse models, offering a promising alternative for spinal arthrodesis.

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In Vivo SiRNA Transfection and Gene Knockdown in Spinal Cord via Rapid Noninvasive Lumbar Intrathecal Injections in Mice

In Vivo SiRNA Transfection and Gene Knockdown in Spinal Cord via Rapid Noninvasive Lumbar Intrathecal Injections in Mice

Published on: March 22, 2014

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Cone Beam Intraoperative Computed Tomography-based Image Guidance for Minimally Invasive Transforaminal Interbody Fusion

Cone Beam Intraoperative Computed Tomography-based Image Guidance for Minimally Invasive Transforaminal Interbody Fusion

Published on: August 6, 2019

In Vivo SiRNA Transfection and Gene Knockdown in Spinal Cord via Rapid Noninvasive Lumbar Intrathecal Injections in Mice

In Vivo SiRNA Transfection and Gene Knockdown in Spinal Cord via Rapid Noninvasive Lumbar Intrathecal Injections in Mice

Published on: March 22, 2014

Area of Science:

Regenerative Medicine
Gene Therapy
Orthopedic Surgery

Background:

Bone morphogenetic proteins (BMPs) are crucial for bone formation but face challenges with localization, diffusion, and short half-life, limiting their efficacy.
Current spine fusion procedures are invasive, involving extensive surgical manipulation and autograft harvesting, leading to high failure rates.
Difficulty in localizing sufficient BMP levels is a key factor contributing to the high failure rate of clinical spinal fusion.

Purpose of the Study:

To develop a reliable, non-surgical method for spine fusion using a single injection of a cell-based gene therapy.
To achieve effective spinal arthrodesis without any surgical intervention.

Main Methods:

Fibroblasts transduced with an adenoviral vector to express BMP2 were injected into the paraspinous musculature of 87 immunodeficient and immune-competent mice.
The study aimed to induce rapid heterotopic ossification (HO) and spinal arthrodesis through this injectable gene therapy system.
Bone formation and fusion were assessed using radiographs, microcomputed tomography, and biomechanical analysis.

Main Results:

Bridging bone formation between vertebrae and fusion to adjacent skeletal bone was observed as early as 2 weeks post-injection.
A significant reduction in spine flexion-extension was noted by 2 weeks.
Over 90% spinal fusion was achieved within 4 weeks in all tested animals, irrespective of their genetic background or immune status.

Conclusions:

The cell-based gene therapy system effectively induces spinal fusion when injected into the paraspinous musculature.
Spinal fusion efficacy is independent of cell type and the host's immune status.
This study pioneers the use of HO in an immune-competent model for non-invasive, injectable spinal fusion, potentially impacting future human spinal arthrodesis.