Stem cell plasticity — building the brain of our dreams

Many recent studies have shown that adult-derived stem cells are more plastic than previously thought, and they can produce a wide variety of offspring across lineages of lines. This will increase the number of available pathways to generate new cells for tissue repair and make the patient-provided autograft more feasible. Scientists working in the stem cell field must critically appreciate the evidence that adult stem cells can make other cell types, in addition to headlines gathering media attention. Evidence that the nervous system review, highly plasticized adult neural stem cell evidence, and other types of adult non-neural stem cells may produce neural progeny. The goal is to highlight some important experiments that provide a view of balanced evidence and should be made before we conclude that adult stem cells are sufficient to replace the abundance of neuronal cell types .

General keywords such as "stem cells", "plasticity of stem cells", "adult stem cells", "embryonic stem cells" and "hematopoietic stem cells, liver or muscle stem cells", Parkinson's disease, bone formation are incomplete. "We also cited published and unpublished data generated in our laboratory.

For a while scientists were interested in the possibilities of stem cells making new brain cells of Parkinson's disease. Recently, methods for converting normal adult cells (for example, skin cells) into stem cells (artificially pluripotent stem cells or iPSc) have been developed. From there, these stem cells become dopamine type and brain cells are lost. To test the performance of the cells, researchers used brain scans. They found that the cells function like normal dopamine-producing brain cells and successfully produce dopamine. Later on they were able to confirm that the transplanted cells survived and, more importantly, they were integrated with the existing neural network - part of the brain function of the primates became

In order to study the plasticity of stem cells from the brain, researchers must overcome some problems. Unlike bone marrow cells, stem cells derived from the central nervous system (CNS) do not occur in accessible places. Instead, they are scattered at least in three locations in the rodent's brain - the tissues around the ventricles of the forebrain, the migration path from the ventricles to the cells of the olfactory bulb, and the hippocampus. Many CNS stem cell experiments involve the formation of neurospheres and the cyclic aggregates of these cells are sometimes clonal derived. However, since it is impossible to observe cells in the center of the neurosphere, in order to study in vitro plasticity, the cells are usually dissociated and spread to monolayer cells. To study in vivo plasticity, cells can be dissociated or injected as neurospheres prior to injection into the circulatory system of the recipient animal.