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Related Concept Videos

Neuroplasticity01:01

Neuroplasticity

Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
Somatic to iPS Cell Reprogramming01:29

Somatic to iPS Cell Reprogramming

Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012 for this...
iPS Cell Differentiation01:22

iPS Cell Differentiation

The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
Methods of Nuclear Reprogramming01:24

Methods of Nuclear Reprogramming

Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for injury repair.

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Related Experiment Video

Updated: Jul 3, 2026

Lineage-reprogramming of Pericyte-derived Cells of the Adult Human Brain into Induced Neurons
09:36

Lineage-reprogramming of Pericyte-derived Cells of the Adult Human Brain into Induced Neurons

Published on: May 12, 2014

Neuronal polarization: old cells can learn new tricks.

Eric S Sweet1, Bonnie L Firestein

  • 1Department of Cell Biology and Neuroscience, Rutgers, the State University of New Jersey, 604 Allison Road, Piscataway, New Jersey 08854-8082, USA.

Current Biology : CB
|August 7, 2008
PubMed
Summary

Neurons can regenerate after axon loss, challenging previous beliefs about neural repair. This study reveals how mature hippocampal neurons reorganize their cytoskeleton to regrow connections, offering new insights into brain recovery.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Neurobiology

Background:

  • Neuronal regeneration was historically considered limited to immature neurons.
  • The capacity for functional recovery in mature central nervous system neurons remains a key question in neuroscience.

Purpose of the Study:

  • To investigate the regenerative potential of mature, interconnected hippocampal neurons following axon injury.
  • To elucidate the cellular mechanisms underlying rapid axonal regrowth in adult neurons.

Main Methods:

  • Utilized advanced microscopy techniques to observe neuronal responses to axon loss in vitro.
  • Analyzed cytoskeletal dynamics and dendritic signaling pathways involved in axon regeneration.

Main Results:

  • Demonstrated that functional hippocampal neurons can rapidly recover from axon loss.
  • Identified a novel mechanism where dendrites signal to initiate axon replacement.
  • Showcased the critical role of microtubule cytoskeleton rearrangement in this regenerative process.

Conclusions:

  • Mature hippocampal neurons possess a significant capacity for functional regeneration.
  • Dendritic plasticity and cytoskeletal remodeling are key to successful axon regrowth.
  • These findings challenge established notions of neuronal aging and repair, opening new avenues for therapeutic strategies.