Researchers at Tel Aviv University have developed a method to engineer living spinal cord tissue for the potential treatment of spinal cord injuries. By using cells to create implants, the team aims to restore motor function, with trials currently receiving approval to begin testing on human subjects.
Laboratory Engineering of Living Spinal Cord Tissue
The process developed at Tel Aviv University centers on creating three-dimensional neural tissue that mimics the body’s natural development. Researchers extract cells directly from the subject, ensuring the final implant contains the same DNA. These cells are reprogrammed to induce pluripotent embryonic stem-like cells, which possess the capacity to differentiate into various cell types.
To provide a structure for this growth, the team extracts collagen and sugars from the subject’s fat cells. This material is used to produce a unique hydrogel scaffold. This environment acts as a guide for the reprogrammed cells, allowing them to organize into the complex, three-dimensional neural networks required to transmit electrical signals throughout the body.
Restoration of Motor Function in Animal Models
Before moving toward human applications, the researchers tested the engineered biological tissue on animals. Study results revealed that over eighty percent of subjects suffering from chronic spinal cord damage recovered the capacity to walk completely after receiving the tissue implant and undergoing physical rehabilitation. This success provided the necessary data to move forward with approval to begin testing on human subjects.
Safety and Effectiveness in Upcoming Human Trials
Researchers launching the initial human studies aim primarily to assess both how safe and how successful the 3D-engineered neural tissue proves as a prospective remedy for spinal cord damage. Because the tissue is derived from the subject’s biological material to ensure that it contained the same DNA and prevent the body from rejecting the artificial spinal cord, the researchers intend to minimize the risk of the body rejecting the implant. These trials represent a shift from traditional regenerative medicine, which often relies on external materials or devices, toward using the body’s own biological material to repair damage at the site of the injury.
Frequently Asked Questions About Neural Tissue Engineering
How do these lab-grown tissues differ from standard prosthetics?
While devices like prosthetic limbs or cochlear implants compensate for lost function, this regenerative approach focuses on replacing damaged biological structures with living tissue. By implanting engineered cells that mirror the body’s own spinal cord, the goal is to physically repair the broken communication pathways of the central nervous system.
Why is it necessary to use a patient’s own DNA for the tissue?
Using cells taken directly from the subject helps ensure that it contained the same DNA and prevent the body from rejecting the artificial spinal cord. This genetic compatibility is a central component of the research, as it seeks to avoid the complications typically associated with organ or tissue transplantation.
What is the role of pluripotent stem cells in this process?
Scientists employ pluripotent stem cells because these cells possess exceptional self-renewal properties, can generate more stem cells via mitotic cell division, and possess the versatility to transform into virtually any cell type in the body. This capability allows scientists to guide the cells into forming the specific neural tissue required to bridge the gap in a damaged spinal cord.
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