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Regulation of Expression at Multiple Steps

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...

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Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...

Regulation of Expression Occurs at Multiple Steps

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Related Experiment Video

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Rewiring Neuronal Circuits: A New Method for Fast Neurite Extension and Functional Neuronal Connection

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Creating a pathway over the regulatory chasm: a fresh start.

¹Ed Silverman is a writer at the Star-Ledger , in Newark, N.J., and is the blogger behind Pharmalot.com.

Biotechnology Healthcare

|April 6, 2012

Summary

A framework for follow-on biologics is expected soon, but disagreements over cost, timing, and terminology persist between innovators and generic manufacturers.

Area of Science:

Biopharmaceutical industry
Regulatory affairs

Background:

The regulatory landscape for follow-on biologics is evolving.
Innovator and generic drug manufacturers have differing perspectives.

Purpose of the Study:

To analyze the key issues impacting the market entry of follow-on biologics.
To understand the obstacles to an agreement between stakeholders.

Main Methods:

Review of current regulatory proposals.
Analysis of industry stakeholder positions.

Main Results:

An emerging framework for follow-on biologics is anticipated.
Significant disagreements remain regarding cost, timing, and terminology.

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Derivation and Characterization of a Transgene-free Human Induced Pluripotent Stem Cell Line and Conversion into Defined Clinical-grade Conditions

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Derivation and Characterization of a Transgene-free Human Induced Pluripotent Stem Cell Line and Conversion into Defined Clinical-grade Conditions

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Conclusions:

Resolution of cost, timing, and terminology issues is crucial for market progression.
The differing viewpoints of innovators and generic rivals present a challenge.