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Cell Specific Gene Expression

Cell Specific Gene Expression

Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...

Cell Specific Gene Expression

Cell Specific Gene Expression

What is Gene Expression?

What is Gene Expression?

Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...

What is Gene Expression?

What is Gene Expression?

A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...

Chromatin Position Affects Gene Expression

Chromatin Position Affects Gene Expression

Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area.
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the...

mRNA Stability and Gene Expression

mRNA Stability and Gene Expression

The structure and stability of mRNA molecules regulates gene expression, as mRNAs are a key step in the pathway from gene to protein. In eukaryotes, the half-life of mRNA varies from a few minutes up to several days. mRNA stability is essential in growth and development. The absence of the proteins regulating its stability, such as tristetraprolin in mice, can cause systemic issues, including bone marrow overgrowth, inflammation, and autoimmunity.
Cis-acting Elements involved in mRNA stability

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Related Experiment Video

Updated: Feb 5, 2026

Ex vivo Method for High Resolution Imaging of Cilia Motility in Rodent Airway Epithelia

Ex vivo Method for High Resolution Imaging of Cilia Motility in Rodent Airway Epithelia

Published on: August 8, 2013

Strain-specific differences in brain gene expression in a hydrocephalic mouse model with motile cilia dysfunction.

Casey W McKenzie¹, Claudia C Preston², Rozzy Finn¹

¹Pediatrics and Rare Diseases Group, Sanford Research, 2301 E. 60th Street N., Sioux Falls, SD, 57104, USA.

Scientific Reports

|September 8, 2018

Summary

Congenital hydrocephalus in mice lacking CFAP221 reveals gene expression changes critical for brain development. These findings offer new insights into the causes of hydrocephalus and cilia dysfunction.

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Ex vivo Method for High Resolution Imaging of Cilia Motility in Rodent Airway Epithelia

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Live Imaging of the Ependymal Cilia in the Lateral Ventricles of the Mouse Brain

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Published on: June 1, 2015

Area of Science:

Neuroscience
Genetics
Developmental Biology

Background:

Congenital hydrocephalus involves cerebrospinal fluid accumulation, leading to severe neurological damage.
Primary ciliary dyskinesia (PCD), caused by motile cilia dysfunction, is linked to hydrocephalus.
Previous studies showed PCD mouse models exhibit hydrocephalus with strain-dependent severity.

Purpose of the Study:

To investigate the molecular mechanisms underlying congenital hydrocephalus in PCD mouse models.
To identify genes and pathways affected by CFAP221 deficiency in the brain.
To explore the relationship between cilia function and brain development in hydrocephalus.

Main Methods:

Microarray analysis of brain tissue from wild-type and CFAP221-deficient (nm1054) mice on C57BL/6J and 129S6/SvEvTac backgrounds.
Comparison of gene expression profiles between different genetic backgrounds and genotypes.
Bioinformatic analysis to identify gene clusters and biological functions.

Main Results:

Significant differences in gene expression were observed in CFAP221-deficient brains compared to wild-type.
Affected genes clustered into groups related to cellular and biochemical processes essential for brain development.
Identified genes are implicated in congenital hydrocephalus and both motile and sensory cilia function.

Conclusions:

Gene expression alterations provide crucial insights into the mechanisms of congenital hydrocephalus.
CFAP221 deficiency impacts pathways vital for brain development and cilia function.
Understanding these genetic factors is key to deciphering hydrocephalus severity.