DNA-catalysed alternative RNA splicing.

Area of Science:

• Molecular Biology
• Biochemistry
• Synthetic Biology

Background:

• Alternative RNA splicing is a crucial process for generating proteomic diversity.
• Current splicing methods primarily rely on biological machinery or chemical synthesis.
• The potential for non-biological catalysts in modulating RNA has remained largely unexplored.

Purpose of the Study:

• To investigate the feasibility of DNA-based catalysis for alternative RNA splicing.
• To demonstrate DNA's capability to modulate RNA structure and function through catalysis.
• To explore the generation of distinct functional RNA isoforms from a single precursor using DNA catalysts.

Main Methods:

• Design and synthesis of modular DNA catalysts incorporating RNA endonuclease and RNA ligase functionalities.
• In vitro assays to assess the catalytic activity of DNA on RNA substrates.
• Analysis of RNA splicing products to identify different isoforms and their potential functions.

Main Results:

• Demonstrated successful DNA-catalysed alternative RNA splicing in vitro.
• Showcased DNA's ability to alter RNA structure and modulate its activity.
• Confirmed the generation of multiple distinct RNA splicing isoforms from a common RNA precursor via DNA catalysis.

Conclusions:

• DNA can function as a catalyst to drive alternative RNA splicing.
• DNA-catalysed splicing offers a novel method for producing RNA isoforms with varied functions.
• This work establishes a new paradigm for controlling RNA processing using synthetic DNA catalysts.