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Related Concept Videos

Structure of a Gene01:30

Structure of a Gene

A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
However, only 1% of the DNA is composed of genes that encode proteins; the rest, 99% is non-coding DNA. This non-coding DNA performs...
What is Gene Expression?01:36

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 processed and...
What is Gene Expression?01:42

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?01:42

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...
Neural Regulation01:37

Neural Regulation

Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
Regulation of Expression Occurs at Multiple Steps02:24

Regulation of Expression Occurs at Multiple Steps

Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...

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Related Experiment Video

Updated: Jul 5, 2026

Single-cell Profiling of Developing and Mature Retinal Neurons
10:20

Single-cell Profiling of Developing and Mature Retinal Neurons

Published on: April 19, 2012

Overview of neural gene expression.

R L Neve1, K A Neve

  • 1Harvard Medical School and McLean Hospital, Belmont, Massachusetts, USA.

Current Protocols in Neuroscience
|April 23, 2008
PubMed
Summary

This overview details key considerations for expressing neural complementary DNAs (cDNAs) in mammalian cells. It covers expression vectors, cell types, delivery methods, and promoter selection for successful gene expression.

Area of Science:

  • Molecular Biology
  • Neuroscience
  • Biotechnology

Background:

  • Expressing neural complementary DNAs (cDNAs) in mammalian cells is essential for studying gene function.
  • Selecting appropriate expression systems and methods is critical for successful outcomes.

Purpose of the Study:

  • To provide a comprehensive overview of critical factors for expressing neural cDNAs in mammalian cells.
  • To guide researchers in optimizing gene expression strategies.

Main Methods:

  • Literature review and synthesis of current knowledge on gene expression in mammalian systems.
  • Comparative analysis of different expression vectors, cell types, and transfection methods.
  • Discussion of stable versus transient expression approaches.

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Main Results:

  • Identified key considerations including expression vector choice, mammalian cell type selection, and vector delivery methods.
  • Highlighted the importance of promoter selection tailored to specific experimental designs.
  • Compared the advantages and disadvantages of stable and transient expression systems.

Conclusions:

  • Successful neural cDNA expression in mammalian cells requires careful planning of the expression vector, cell type, and delivery method.
  • The choice of promoter is paramount and must align with the experimental system's design.
  • Researchers must weigh the trade-offs between stable and transient expression for their specific applications.