Related Experiment Video
Updated: Jan 28, 2026
09:10
Ex Vivo Imaging of Postnatal Cerebellar Granule Cell Migration Using Confocal Macroscopy
Published on: May 12, 2015
9.8K
Arhgef7 is essential for granule cell precursor proliferation and migration during cerebellum development
Vanesa Jiménez-Amilburu1, Hugo Ducuing1, Nursen Balekoglu1,2
1Montreal Clinical Research Institute (IRCM), 110 Pine Avenue West, Montreal, QC H2W 1R7, Canada.
Iscience
|January 26, 2026
Summary
Arhgef7 is essential for cerebellar development. Its loss impairs granule cell precursor proliferation, migration, and differentiation, leading to severe cerebellar hypoplasia and developmental defects.
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- Granule cell precursors (GCPs) are crucial for cerebellar development.
- Arhgef7 acts as a guanine nucleotide exchange factor for Rac1 and Cdc42, involved in cellular processes.
Purpose of the Study:
- To investigate the role of Arhgef7 in cerebellar development.
- To analyze the impact of Arhgef7 loss on GCPs using conditional knockout mice.
Main Methods:
- Conditional knockout (cKO) mouse model targeting Arhgef7 in GCPs.
- Analysis of cerebellar development, GCP proliferation, migration, and differentiation.
Main Results:
- Arhgef7 is expressed in GCPs.
- Loss of Arhgef7 causes severe cerebellar hypoplasia and foliation defects.
- Impaired GCP proliferation, delayed differentiation, and abnormal migration observed in Arhgef7 cKO mice.
Conclusions:
- Arhgef7 is critical for regulating GCP proliferation, migration, and differentiation.
- Arhgef7 plays an essential role in ensuring proper cerebellar morphogenesis.
Related Concept Videos
01:19Cell Migration
6.5K
Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
6.5K
01:09Cell Migration
18.7K
Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.
18.7K
02:36Cells Coordinate Growth and Proliferation
5.1K
Cell size is a significant factor impacting cellular design, function, and fitness. There exists some internal coordination by which cells double their masses before division, thus, achieving homeostasis. Coordination between cell growth and proliferation depends on the checkpoints in between cell cycle phases. Loss of coordination or failure in the checkpoint mechanism can drive the cell to uncontrolled growth and loss of cellular function. Like dividing cells that coordinate cellular growth,...
5.1K
01:25Compounds Essential to Human Function
10.1K
The human body is composed of cells that are fundamentally made up of several different molecules. These molecules are essential to carry out all physiological processes in the body and are broadly classified into organic and inorganic based on their chemical structures.
Inorganic Compounds Essential to Human Functioning
Inorganic compounds essential to human functioning include water, salts, acids, and bases. These compounds are inorganic, i.e., they do not have a carbon-hydrogen bond. Water...
Inorganic Compounds Essential to Human Functioning
Inorganic compounds essential to human functioning include water, salts, acids, and bases. These compounds are inorganic, i.e., they do not have a carbon-hydrogen bond. Water...
10.1K
01:17Cerebellum: Anatomical Regions
4.4K
The cerebellum, also known as the "little brain," is located in the posterior cranial fossa, inferior to the tentorium cerebelli and dorsal to the brainstem. It plays a significant role in motor control, coordination, and proprioception.
Cerebellar Structure
Externally, the cerebellum features a highly convoluted surface with numerous folia (narrow ridges) separated by shallow sulci (grooves). The cerebellum is divided into two hemispheres by a thin median structure known as the vermis. The...
Cerebellar Structure
Externally, the cerebellum features a highly convoluted surface with numerous folia (narrow ridges) separated by shallow sulci (grooves). The cerebellum is divided into two hemispheres by a thin median structure known as the vermis. The...
4.4K
02:23Abnormal Proliferation
5.2K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.2K