EPISODE 20: Tiny RNAs, Huge Impact – How Worms Revealed microRNAs

EPISODE 20: Tiny RNAs, Huge Impact – How Worms Revealed microRNAs

In this episode, we travel back to one of the great origin stories in gene regulation: the discovery of lin-4, the first-ever microRNA. In Caenorhabditis elegans, scientists found that tiny non-coding RNAs could silence gene expression by pairing with target mRNAs — launching the entire field of microRNA biology.

We explore:

  • How lin-4 regulates developmental timing by repressing LIN-14 protein

  • The discovery of small RNAs (22 and 61 nucleotides) as gene regulators

  • The first evidence for RNA-RNA antisense interactions controlling translation

  • Why this work reshaped our understanding of gene expression across species

  • How a worm taught us that not all genes code for proteins

📖 Based on the research article:
"The C. elegans Heterochronic Gene lin-4 Encodes Small RNAs with Antisense Complementarity to lin-14"
Rosalind C. Lee, Rhonda L. Feinbaum & Victor Ambros.
Published in Cell (1993).
🔗 https://doi.org/10.1016/0092-8674(93)90529-Y

🎧 Subscribe to the WOrM Podcast for more whole-organism breakthroughs that reshaped biology!

This podcast is generated with artificial intelligence and curated by Veeren. If you’d like your publication featured on the show, please get in touch.


📩 More info:

🔗 ⁠⁠www.veerenchauhan.com⁠⁠

📧 veeren.chauhan@nottingham.ac.uk

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Avsnitt(53)

EPISODE 53: Worms on Pause

EPISODE 53: Worms on Pause

Welcome to the next episode of the WOrM Podcast 🪱⏸️Today, we are talking about worms that appear to stop living—without dying.Researchers have identified a new, reversible state of suspended animatio...

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EPISODE 52: Worms in Space: Microbiomes in a Capsule

EPISODE 52: Worms in Space: Microbiomes in a Capsule

Welcome to the next episode of the WOrM Podcast 🪱🚀Today, we are looking at NemaCapsules: a new microfluidic system designed to study how host genetics and the gut microbiome influence C. elegans hea...

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EPISODE 51: The Worm Behind the Wild

EPISODE 51: The Worm Behind the Wild

Welcome to the next episode of the WOrM Podcast 🪱Today we’re looking at a review with a bold idea.Can a tiny nematode help us protect fish, amphibians, reptiles and insects from an increasingly chall...

22 Juli 16min

EPISODE 50: Fed by Mum, Built by Ribosomes

EPISODE 50: Fed by Mum, Built by Ribosomes

Welcome to the next episode of the WOrM Podcast 🪱Today we’re talking about inheritance.Not DNA.Not small RNAs.Not epigenetics.But ribosomes.⸻🧬 The central ideaWhen mother worms experience dietary re...

15 Juli 20min

EPISODE 49: Glowing up the Worm Proteome

EPISODE 49: Glowing up the Worm Proteome

Welcome to the next episode of the WOrM Podcast 🪱Today we’re looking at a paper that doesn’t answer a biological question.Instead, it builds the tools to answer thousands of biological questions in t...

8 Juli 21min

EPISODE 48: Murder Mode: How a Worm Evolved the Urge to Kill

EPISODE 48: Murder Mode: How a Worm Evolved the Urge to Kill

Welcome to the next episode of the WOrM Podcast 🪱Today we're talking about a worm with teeth.And a nervous system that has been rewired — by evolution — to become aggressive.⸻🧬 The central ideaPrist...

6 Maj 14min

EPISODE 47: When Bacteria Fight Back: Bioplastic Kills the Worm

EPISODE 47: When Bacteria Fight Back: Bioplastic Kills the Worm

Welcome to the next episode of the WOrM Podcast 🪱Today we’re talking about something unexpected.A bioplastic — something we usually think of as sustainable, useful, even beneficial —can kill a worm.⸻...

29 Apr 21min

EPISODE 46: Turning in Time: Neural Sequences in the Worm Brain

EPISODE 46: Turning in Time: Neural Sequences in the Worm Brain

Welcome to the next episode of the WOrM Podcast 🪱Today we’re looking at something deceptively simple: a turn.But not just that a worm turns —how the brain decides to do it.⸻🧬 The central ideaTurning...

22 Apr 19min

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