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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...

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

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 1, 2026

Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells

Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells

Published on: April 14, 2010

Cancer Immunity and Gene Expression Data: A Quick Tool for Immunophenotype Evaluation.

Masayuki Hirano¹

¹Department of Pathology and Laboratory Medicine, Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia. mhiran2@emory.edu.

Cancer Research

|December 5, 2018

Summary

This summary is machine-generated.

A new web tool helps cancer researchers analyze tumor immune cells. This user-friendly platform enables efficient tracking and visualization of anticancer immune activity from sequencing data, aiding immunologists and clinicians.

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Sample Preparation and Analysis of RNASeq-based Gene Expression Data from Zebrafish

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Monitoring the Cancer-Immunity Cycle and Exploring Tumor Microenvironment Dynamics

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Last Updated: Feb 1, 2026

Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells

Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells

Published on: April 14, 2010

Sample Preparation and Analysis of RNASeq-based Gene Expression Data from Zebrafish

Sample Preparation and Analysis of RNASeq-based Gene Expression Data from Zebrafish

Published on: October 27, 2017

Monitoring the Cancer-Immunity Cycle and Exploring Tumor Microenvironment Dynamics

Monitoring the Cancer-Immunity Cycle and Exploring Tumor Microenvironment Dynamics

Published on: June 7, 2024

Area of Science:

Oncology
Immunology
Bioinformatics

Background:

Next-generation sequencing has generated vast cancer datasets.
Many research labs lack dedicated bioinformaticians for data analysis.
Understanding the tumor microenvironment is crucial for cancer research.

Purpose of the Study:

To develop a user-friendly, web-based tool for analyzing tumor immunophenotypes.
To enable researchers without bioinformatics expertise to assess immune cell infiltration.
To provide systematic tracking, analysis, and visualization of anticancer immune activity.

Main Methods:

Development of a web-based platform accessible to researchers.
User-uploaded datasets are processed for immune cell analysis.
Systematic tracking, analysis, and visualization of immune cell proportions and activity.

Main Results:

The tool facilitates the definition of tumor immunophenotypes.
It allows for efficient and comprehensive analysis of tumor-infiltrating immune cells.
Visualization of immune status aids in understanding anticancer immune responses.

Conclusions:

This tool empowers immunologists and clinical researchers to analyze complex cancer datasets.
It simplifies the assessment of tumor-infiltrating lymphocytes and immune activity.
The platform supports quicker, more efficient research into cancer immunology.