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Master Transcription Regulators

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...

Master Transcription Regulators

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...

RNA Polymerase II Accessory Proteins

RNA Polymerase II Accessory Proteins

Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...

Co-activators and Co-repressors

Co-activators and Co-repressors

Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...

Transducer Mechanism: Nuclear Receptors

Transducer Mechanism: Nuclear Receptors

Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
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Transcription Initiation

Transcription Initiation

Initiation is the first step of transcription in eukaryotes. Prokaryotic RNA Polymerase (RNAP) can bind to the template DNA and start transcribing. On the other hand, transcription in eukaryotes requires additional proteins, called transcription factors, to first bind to the promoter region in the DNA template. This binding helps recruit the specific RNAP that can assemble on the DNA and start transcription.
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Related Experiment Video

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Cell-Specific Paired Interrogation of the Mouse Ovarian Epigenome and Transcriptome

Cell-Specific Paired Interrogation of the Mouse Ovarian Epigenome and Transcriptome

Published on: February 24, 2023

Transcription factor RORα is critical for nuocyte development.

See Heng Wong¹, Jennifer A Walker, Helen E Jolin

¹Medical Research Council Laboratory of Molecular Biology, Cambridge, UK.

Nature Immunology

|January 24, 2012

Summary

Nuocytes, key players in type 2 immunity and asthma, originate from lymphoid progenitors in bone marrow. Their development is regulated by specific signaling pathways and transcription factors, impacting immune responses.

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Published on: June 21, 2016

Area of Science:

Immunology
Cell Biology
Innate Immunity

Background:

Nuocytes are crucial for innate type 2 immunity.
Nuocytes are implicated in exacerbating asthma.
The developmental origin and lineage of nuocytes remain largely uncharacterized.

Purpose of the Study:

To elucidate the developmental origin of nuocytes.
To identify key factors regulating nuocyte development.
To understand the role of nuocytes in immune responses.

Main Methods:

Investigated nuocyte differentiation from bone marrow progenitors.
Utilized in vitro culture systems with specific cytokines and signaling inhibitors.
Examined the role of transcription factors in nuocyte development.

Main Results:

Nuocytes differentiate from common lymphoid progenitors in the bone marrow.
Nuocyte development requires interleukin-7 (IL-7), IL-33, and Notch signaling.
Pro-T cell progenitors retain nuocyte potential; thymus is not essential.
Transcription factor RORα is critical for nuocyte development and function.

Conclusions:

Nuocytes represent a distinct, previously unrecognized lymphoid lineage.
Specific molecular signals govern nuocyte development and immune function.
Nuocytes play a role in parasitic worm expulsion and type 2 immunity.