Cell Type Specific Expression
Cell Type Specific Expression - Related Videos
01:58
Cell Specific Gene Expression
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2020
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...
08:37
Using Fluorescence Activated Cell Sorting to Examine Cell-Type-Specific Gene Expression in Rat Brain Tissue
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Cited by 17 •
2015
The goal of this protocol is to use the fluorescence activated cell sorting (FACS) technique to sort specific types of neural cells for subsequent analysis of cell-type-specific gene expression, epigenetic markers, and or protein expression.
10:10
Investigating Tissue- and Organ-specific Phytochrome Responses using FACS-assisted Cell-type Specific Expression Profiling in Arabidopsis thaliana
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Cited by 5 •
2010
The molecular basis of spatial-specific phytochrome responses is being investigated using transgenic plants that exhibit tissue- and organ-specific phytochrome deficiencies. The isolation of specific cells exhibiting induced phytochrome chromophore depletion by Fluorescence-Activated Cell Sorting followed by microarray analyses is being utilized to identify genes involved in spatial-specific phytochrome responses.
10:06
Cell Type-specific Gene Expression Profiling in the Mouse Liver
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Cited by 1 •
2019
Translating ribosome affinity purification (TRAP) enables rapid and efficient isolation of cell type-specific translating mRNA. Here, we demonstrate a method that combines hydrodynamic tail-vein injection in a mouse model of liver repopulation and TRAP to examine the expression profile of repopulating hepatocytes.
09:31
Inducible, Cell Type-Specific Expression in Arabidopsis thaliana Through LhGR-Mediated Trans-Activation
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Cited by 2 •
2019
Here, we describe the generation and application of a set of transgenic Arabidopsis thaliana lines enabling inducible, tissue-specific expression in the three main meristems, the shoot apical meristem, the root apical meristem, and the cambium.
FAQs
Promoters and enhancers provide regulatory control over where a gene becomes active. A construct linked to cell-type-specific regulatory sequences can favor expression in a defined neuronal or glial population rather than throughout the surrounding tissue. This selectivity lets investigators associate a reporter or functional gene with cellular identity, supporting more precise analysis of heterogeneous neural circuits.
Recombinase systems such as Cre-lox provide an additional targeting layer when paired with viral or transgenic constructs. Instead of relying only on the delivery method or regulatory sequence, researchers can combine these elements so that gene activity is restricted to cells meeting the intended targeting conditions. This improves control over labeling and genetic manipulation in neural tissue.
Neurons and glial cells occupy different cellular roles within complex neural tissue, so combining their signals can obscure how a circuit functions. Cell type-specific expression separates these populations for observation or manipulation. That distinction helps investigators connect particular cellular identities with circuit activity, cellular function, and disease-related changes rather than assigning an outcome to the tissue as a whole.
A typical design begins by selecting the neural population of interest, then placing the desired gene or reporter under an appropriate cell-type-specific promoter or enhancer. Researchers may further combine the construct with a targeted viral or transgenic strategy and a recombinase system. The resulting expression can then be used for selective labeling, imaging, optogenetic control, or genetic manipulation.
The strategy can link cellular identity to several experimental readouts. Selective reporters enable researchers to label a chosen population, while calcium imaging can monitor activity associated with those cells. Optogenetic control permits targeted manipulation, and other genetic constructs can alter cellular function. Using these options together helps relate activity or manipulation to specific neurons or glia.
By restricting gene activity to defined populations, researchers can examine how particular neurons or glial cells contribute to circuit organization and function. The same precision helps build disease models in which genetic changes or measurements are associated with selected cell types. These applications can clarify cellular mechanisms and support the development of more precise potential therapies.