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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
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Related Experiment Video

Updated: Mar 12, 2026

Author Spotlight: Improved Nucleofection for High-Efficiency Gene Delivery in Murine Subventricular Zone-Derived Neural Stem Cell Cultures
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CSF Makes Waves in the Neural Stem Cell Niche.

Neil Dani1, Maria K Lehtinen1

  • 1Department of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.

Cell Stem Cell
|November 5, 2016
PubMed
Summary

The adult brain's choroid plexus secretes signals regulating neurogenesis, the process of new neuron formation. These signals impact adult neural stem cell activity in an age-dependent manner.

Area of Science:

  • Neuroscience
  • Stem Cell Biology
  • Developmental Biology

Background:

  • Adult neural stem cells (NSCs) are crucial for brain repair and function.
  • NSCs reside in specialized niches that control neurogenesis.
  • The specific signals and components within these niches remain incompletely understood.

Purpose of the Study:

  • To investigate the role of the choroid plexus in regulating adult neurogenesis.
  • To identify signals secreted by the choroid plexus that influence NSC behavior.
  • To determine if these regulatory mechanisms are age-dependent.

Main Methods:

  • Utilized adult rodent models.
  • Analyzed the secretome of the choroid plexus.
  • Assessed the impact of choroid plexus secretions on neural stem cell proliferation and differentiation.

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Main Results:

  • The choroid plexus, located in the lateral ventricles, actively secretes factors influencing neurogenesis.
  • These secreted factors demonstrate an age-dependent effect on adult neural stem cell activity.
  • Identified specific signaling molecules involved in this regulation.

Conclusions:

  • The choroid plexus is a key component of the adult neural stem cell niche.
  • Choroid plexus secretions play a significant role in modulating adult neurogenesis.
  • Understanding these age-dependent signals offers potential therapeutic targets for brain aging and repair.