Welcome to the next episode of the WOrM Podcast 🪱

Today we return to a core question in worm biology: when stress extends lifespan, what is really doing the work?

Is it damage repair?
Is it signalling rewiring?
Or is it something more coordinated at the whole-organism level?

In this episode we explore new insights into how longevity pathways intersect with stress signalling in C. elegans, and what this means for how we interpret lifespan extension.

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🧬 The central idea

Many longevity paradigms begin with a perturbation — mitochondrial disruption, metabolic alteration, environmental stress — and end with a longer-lived worm.

But the key question is not whether lifespan increases.

It’s why.

This paper dissects the signalling architecture behind stress-induced longevity and challenges overly simple models where one pathway equals one outcome.

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🔬 What’s happening under the hood?

Rather than acting in isolation, canonical longevity regulators intersect with stress-activated signalling networks.

We see coordination between:
• stress response transcription factors
• metabolic regulators
• immune signalling components
• and tissue-specific effects

The result is not just stress resistance — but systemic adaptation.

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🧠 Why this matters

In worm biology, lifespan extension is often treated as the final readout.

But lifespan is an emergent property.

It reflects how well the organism integrates:
• damage sensing
• metabolic state
• immune tone
• and signalling fidelity

This episode steps back and asks whether we should think less about single “longevity genes” and more about network behaviour across the whole animal.

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🪱 The worm lesson

C. elegans continues to show us that longevity is rarely about silencing stress.

It’s about interpreting it correctly.

Stress is not always damage.
Sometimes it’s information.

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📄 Paper discussed

TJ O’Brien, EP Navarro, C Barroso, L Menzies, E Martinez-Perez, D Carling, AEX Brown
High-throughput behavioural phenotyping of 25 C. elegans disease models including patient-specific mutations
BMC Biology 23:281

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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.

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🔗 www.veerenchauhan.com
📧 [email protected]

Today we’re talking about a molecule that keeps popping up in “healthy ageing” conversations: cordycepin (3′-deoxyadenosine) 🍄

But instead of vague claims, we’re going to ground this in C. elegans data — lifespan, stress resistance, movement, oxidative stress markers, and what happens to lipids along the way.

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🧬 What’s the question?

Cordycepin is linked to antioxidant, anti-inflammatory and neuroprotective effects, but its anti-ageing mechanism hasn’t been clear. This paper asks a simple question: does cordycepin extend worm lifespan, and if so — how?

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⏱️ What they found in worms

Cordycepin extended lifespan under normal conditions and under heat stress. At the higher dose (2 mg/mL), mean lifespan increased by ~28.5% compared with controls. 

It also improved healthspan-type measures: better locomotion (head swings), reduced age pigment lipofuscin, and lower oxidative stress. 

Importantly, the authors report no obvious cost in body size or reproduction under their conditions. 

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🧪 The mechanism in plain terms

The story here has two big parts:

1) Antioxidant protection ✅

Cordycepin reduced ROS accumulation and increased antioxidant enzyme activities (CAT, SOD, GSH-PX). 

2) Fatty acid metabolism gets rewired 🧈

Metabolomics showed cordycepin shifted multiple metabolites — notably decreasing linoleic acid and oleic acid, alongside changes in other metabolic intermediates. 

Transcriptomics pointed to upregulation of fatty-acid and β-oxidation–linked genes, including acox-1.2/1.3/1.4, acs-1, acs-15, acdh-1, acdh-4, acdh-8, with pathway enrichment in fatty acid degradation/metabolism, peroxisome and related networks. 

So the argument is: cordycepin extends lifespan by strengthening oxidative stress defences and shifting lipid handling in a pro-longevity direction.

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🧠 The take-home message

Cordycepin isn’t framed here as a magic bullet — it’s framed as a compound that pushes two core ageing levers in worms: redox balance and fatty acid metabolism.

If you work on stress, metabolism, lipid biology, or whole-organism ageing, this one is worth a look.

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📄 Paper discussed

Sun, Y.; Zhong, M.; Wang, J.; Feng, M.; Shen, C.; Han, Z.; Cao, X.; Zhang, Q. (2025). Cordycepin extends the longevity of Caenorhabditis elegans via antioxidation and regulation of fatty acid metabolism. European Journal of Pharmacology, 994, 177388. DOI: 10.1016/j.ejphar.2025.177388 

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If you enjoyed this episode, please like, follow, and subscribe wherever you listen to the WOrM Podcast ⭐🎧 It really helps others find the show.

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

📧 [email protected]

Welcome to the next episode of the WOrM Podcast 🪱

Today we’re doing something a little different. If you already know C. elegans — and I know you do — then you’ll know that timing is everything ⏱️ Development, behaviour, signalling, lifespan… it all depends on having worms at the right stage, at the right time.

So this episode is all about synchronisation.

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🪱 Why synchronisation matters

Whether you’re studying development, stress responses, signalling dynamics, or behaviour, mixed populations are a problem. Adults, L4s, L2s and L1s all behave differently, signal differently, and respond differently.

That’s why synchronisation underpins almost everything we do in worm biology.

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🔬 How worms are usually synchronised

There are plenty of ways to do this, and most of us have tried them all:

• Bleaching to isolate embryos

• Starvation-based L1 arrest

• Timed egg lays

• Manual picking (slow, painful, character building)

They all work — but they all come with trade-offs. Stress, developmental artefacts, variability, and time.

And that brings us to today’s focus.

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⭐ Enter NemaSync

NemaSync takes a different approach.

Instead of chemical stress or starvation, it uses purely physical separation — and the key is surprisingly simple: the shape of the filter.

Not just pore size — but geometry.

The stabilisation and harvest filters are designed so that:

• gravid adults are retained

• newly hatched L1s pass cleanly through

• and the larvae you collect are tightly synchronised, without bleach or starvation

What you end up with is:

• healthier worms

• tighter developmental windows

• and far better reproducibility

Find out more about NemaSync here:

🔗 https://www.nemasync.com/

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📄 A brief nod to the literature

This approach has already shown its value in live-imaging and signalling studies. One example is:

Rasmussen, N. R. & Reiner, D. J. (2021). Nuclear translocation of the tagged endogenous MAPK MPK-1 denotes a subset of activation events in C. elegans development. Journal of Cell Science, 134, jcs258456.

DOI: 10.1242/jcs.258456

In that study, precise synchronisation was essential for capturing transient MPK-1 nuclear translocation events during vulval development — exactly the kind of biology where timing really matters.

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🧠 The take-home message

Synchronisation isn’t glamorous, but it’s foundational.

And NemaSync gets it right by focusing on:

• physical separation

• minimal stress

• and reproducibility driven by smart design

Sometimes, the most important innovation isn’t a new gene or pathway — it’s a better way to prepare your worms.

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If you enjoyed this episode, please like, follow, and subscribe wherever you listen to the WOrM Podcast ⭐🎧 It really helps others in the community find the show.

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

📩 More info:

🔗 www.veerenchauhan.com

📧 [email protected]

What if living longer isn’t just about fixing broken mitochondria—but about how the organism responds to that stress?

In this episode, we dig into a 2025 Nature Communications paper that reframes a classic ageing story in C. elegans. Instead of the usual focus on mitochondrial protein quality control, this study shows that lifespan extension from mitochondrial translation inhibition is driven by something else entirely: an immuno-metabolic stress response.

And at the centre of it all is an unexpected gene with a forgettable name and a very memorable role.

Mild inhibition of mitochondrial translation (for example via mrps-5 RNAi or doxycycline) is known to extend lifespan in worms. Traditionally, this has been linked to the mitochondrial unfolded protein response (UPRmt).

This paper shows that UPRmt is not the whole story.

Instead, lifespan extension depends on a gene called C32E8.9, the worm orthologue of human ECHDC1, which links:

• innate immune activation

• lipid remodelling

• and organism-level longevity

Block this gene, and the lifespan benefit disappears—even though UPRmt stays fully active.

• C32E8.9 is essential for lifespan and healthspan extension caused by mitochondrial translation inhibition.

• Knocking it down completely abolishes longevity, but does not block UPRmt.

• The effect is specific: other longevity pathways (insulin signalling, dietary restriction, ETC inhibition) do not depend on C32E8.9.

• Mitochondrial translation inhibition activates innate immune pathways, especially TGF-β signalling.

• The TGF-β co-factor SMA-4 is required for the lifespan effect and pathogen resistance.

• Lipidomics reveals tightly regulated changes in triglyceride saturation and chain length, controlled by C32E8.9.

• Overexpressing C32E8.9 alone is enough to extend lifespan and improve immune resilience—partially mimicking mitochondrial stress.

In short: mitochondria trigger the signal, but immunity and lipid balance do the work.

This study pushes ageing research beyond the idea that stress responses act in isolation.

It suggests that:

• longevity emerges from system-level coordination,

• immune readiness and metabolic balance are tightly coupled,

• and mitochondrial stress can be beneficial only if the organism interprets it correctly.

For whole-organism biology, this is a big deal. Longevity isn’t just a cellular repair problem—it’s a communication problem.

C. elegans doesn’t live longer just because its mitochondria slow down.

It lives longer because:

• its immune system is primed,

• its lipid landscape is stabilised,

• and stress is translated into adaptation rather than damage.

Tiny worm. Big principle.

Hu, I. M.; Molenaars, M.; Jaspers, Y. R. J.; Schomakers, B. V.; van Weeghel, M.; Bakker, A.; Modder, M.; Dewulf, J. P.; Bommer, G. T.; Gao, A. W.; Janssens, G. E.; Houtkooper, R. H. (2025)

Immuno-metabolic stress responses control longevity from mitochondrial translation inhibition in C. elegans

Nature Communications

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

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How do you hunt for pain-sensing genes in an octopus — and then test what they do in a nematode? In this episode, we explore a cross-species strategy that mines the Octopus vulgaris transcriptome for candidate nociceptors, then functionally probes a subset using Caenorhabditis elegans behaviour.

Using conserved nociception pathways as a guide, the authors identify candidate genes with C. elegans orthologues and show that a subset can alter aversive responses in the worm. The work highlights conserved molecular themes — including TRP channels and neuropeptide signalling — and shows how C. elegans can be used as a fast, tractable platform to characterise candidate sensory genes from more complex invertebrates.

🔍 Key topics covered

• Why cephalopod nociception matters (including welfare context)

• A bioinformatic “orthologue-first” pipeline to shortlist candidate nociceptors

• Functional testing in C. elegans using aversive/avoidance behaviour

• What the results suggest about conserved roles for TRP channels and neuropeptides

📖 Based on the research article:

“Identification of molecular nociceptors in Octopus vulgaris through functional characterisation in Caenorhabditis elegans”

Eleonora Maria Pieroni, Vincent O’Connor, Lindy Holden-Dye, Pamela Imperadore, Graziano Fiorito & James Dillon.

Biology Open (2025)

🔗 https://doi.org/10.1242/bio.062268

UK C. elegans Meeting 2026 (Southampton) — registration + abstracts

• Registration open (deadline 10 March 2026)

• Register via the University of Southampton Online Store (search for “UK C elegans 2026”). 

• Abstract submission form: https://forms.cloud.microsoft/e/BURNmxu76i

• Important: you must be registered for your abstract to be accepted; talk selections are made after registration closes.

• Meeting info page: 

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

📧 [email protected]

In this episode of the WOrM Podcast, we explore how plant-parasitic nematodes rarely act alone.

Focusing on nematode–pathogen disease complexes, this episode examines how interactions between nematodes, microbes, and host plants lead to more severe disease outcomes than any single pathogen could cause on its own. Drawing on examples spanning bacteria, fungi, oomycetes, and viruses, we look at why these partnerships are so effective — and so difficult to control.

We discuss how nematodes contribute to disease through:

• Mechanical wounding that creates entry points for secondary pathogens

• Formation of nutrient-rich feeding sites that support microbial proliferation

• Vectoring of plant viruses via the stylet and oesophageal tissues

• Active suppression of plant immune responses through secreted effectors

The episode highlights classic and emerging disease complexes, including root-knot nematode interactions with Fusarium and Ralstonia, as well as virus transmission by dagger and stubby-root nematodes. We also reflect on how nematode lifestyle — migratory versus sedentary — shapes the structure and severity of these interactions.

Rather than focusing on control strategies alone, this episode centres on mechanism: how multi-organism interactions arise, why they persist, and what they reveal about host susceptibility and immune regulation.

📖 Based on the research article:

“Partners in Crime: Elucidating the Molecular Underpinnings of Nematode–Pathogen Disease Complexes”

Alison Blundell, Bardo Castro, Veronica I. Casey, Valerie M. Williamson & Shahid Siddique

Molecular Plant–Microbe Interactions (2026)

🔗 https://doi.org/10.1094/MPMI-10-25-0154-FI 

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

📧 [email protected]

In this end-of-year episode of the WOrM Podcast, we explore a seasonal but scientifically grounded idea: a Christmas recipe for worms.

Using Caenorhabditis elegans as a model organism, this episode examines how food-derived compounds — often associated with festive spices and treats — are used experimentally to probe ageing, stress resistance, and metabolic regulation. The focus is firmly on mechanism, not diet: defined molecules, controlled assays, and conserved biological pathways.

We explore how compounds such as curcumin (turmeric), cinnamaldehyde (cinnamon), eugenol (cloves), ginger-derived phytochemicals, resveratrol (red wine), and polyphenols from cocoa influence longevity and stress responses in worms. Across these studies, pathways including DAF-16/FOXO, SKN-1/Nrf2, and sirtuin-associated signalling repeatedly emerge as central regulators.

This episode does not offer dietary or health advice, nor does it extrapolate findings directly to humans. Instead, it reflects on how simple molecules — studied rigorously in a small organism — continue to shape our understanding of ageing biology.

We close with a calm end-of-year reflection on C. elegans as a system for thinking about time, stress, and resilience as one year ends and another begins.

📖 Based on the research articles:

“Curcumin extends life span, improves health span and modulates stress responses in Caenorhabditis elegans

Liao, V. H.-C., Yu, C.-W., Chu, Y.-J., Li, W.-H., Hsieh, Y.-C. & Wang, T.-T.

Mechanisms of Ageing and Development (2011)

🔗 https://doi.org/10.1016/j.mad.2011.04.002

“Syzygium aromaticum L. elicits lifespan extension and attenuates age-related β-amyloid-induced proteotoxicity in Caenorhabditis elegans

Kumar, D., Kumar, S., Kohli, S., Arya, R. & Gupta, J.

Journal of Functional Foods (2014)

“Resveratrol mimics caloric restriction to extend life span in Caenorhabditis elegans

Wood, J. G., Rogina, B., Lavu, S., Howitz, K., Helfand, S. L., Tatar, M. & Sinclair, D.

Nature (2004)

🔗 https://doi.org/10.1038/nature02789

“Food-derived polyphenols modulate stress resistance and ageing in Caenorhabditis elegans

Various authors

Frontiers in Pharmacology (2023)

“Bioactive food compounds as modulators of ageing pathways in Caenorhabditis elegans

Review article

Phytochemistry Reviews / related sources

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

📧 [email protected]

How does a one-millimetre worm help win four Nobel Prizes? In this episode, we explore how C. elegans became one of the most influential organisms in modern biology — not because of its size, but because of its community.

Researchers, beginning with Sydney Brenner’s vision, built an ecosystem of radical openness: shared strains, shared annotations, shared tools, shared knowledge. This culture powered breakthroughs in apoptosis, GFP, RNA interference, and microRNAs, each recognised with a Nobel Prize.

We discuss how the CGC, WormBase, WormAtlas, open imaging libraries, and collaborative genetics transformed a tiny worm into a global scientific powerhouse. It’s the story of a field that chose to share — and in doing so, changed biology.

Key themes:

• The collaborative backbone behind worm research

• Why sharing strains and data accelerated Nobel-winning discoveries

• How open tools shaped genetics, neuroscience, and ageing research

• The social and scientific architecture of a uniquely supportive community

• Why C. elegans is still leading modern multi-omics and connectomics

Based on the research article:🎧 Subscribe to the WOrM Podcast

“From nematode to Nobel: How community-shared resources fueled the rise of Caenorhabditis elegans as a research organism”

Victor R. Ambros, Martin Chalfie, Aric L. Daul, Andrew Z. Fire, David H. Hall, H. Robert Horvitz, Craig C. Mello, Gary Ruvkun, Nathan E. Schroeder, Paul W. Sternberg & Ann E. Rougvie.

PNAS (2025)

🔗 https://doi.org/10.1073/pnas.2522808122

🎧 Subscribe to the WOrM Podcast

Whole-organism stories from molecules to behaviour.

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

📧 [email protected]

Can a tiny dose of caffeine help a worm live longer? In this episode, we explore how C. elegans responds to the world’s favourite stimulant. Researchers show that low-dose caffeine extends lifespan, while higher doses flip into toxicity — revealing a fine balance between metabolic stress, development, and purinergic signalling.

We cover:

• How small amounts of caffeine boost survival in C. elegans

• Why high doses shorten lifespan and slow development

• Effects on growth, body size, and reproduction

• How adenosine signalling partially controls caffeine’s impact

• Why the DAF-2 insulin/IGF-1 pathway is required for the longevity effect

• What this teaches us about conserved stimulant–ageing biology

It’s the worm equivalent of a perfectly measured flat white — just enough buzz to help you thrive.

Based on the research article:

“Lifespan Extension Induced by Caffeine in Caenorhabditis elegans is Partially Dependent on Adenosine Signaling”

José C. Bridi, Arthur G.A. Barros, Laura R. Sampaio, João C.D. Ferreira, Fabiano A. Antunes Soares & Marcos A. Romano-Silva.

Frontiers in Aging Neuroscience (2015)

🔗 https://doi.org/10.3389/fnagi.2015.00220

🎧 Subscribe to the WOrM Podcast Whole-organism stories brewed fresh each week.

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

📧 [email protected]

How do you make a nanoparticle that tells you where it is and helps at the same time?

In this episode, we dive into the chemistry behind polydiacetylene (PDA)—a polymer that changes colour when it senses temperature, pH, or stress.

Researchers combined PDA with biodegradable poly(glycerol adipate) to create self-reporting nanoparticles that:

• Change colour from blue to red under stress or heat

• Track cells and nematodes without any added fluorescent dyes

• Degrade naturally via enzymatic action

• Carry drugs like usnic acid for therapeutic delivery

It’s a step toward theranostic polymers—materials that diagnose and treat simultaneously, glowing as they go. Even C. elegans joined the test, confirming safe uptake and real-time visibility.

📖 Based on the research article:

“Tailoring the Properties of Polydiacetylene Nanosystems for Enhanced Cell Tracking Through Poly(glycerol Adipate) Blending: an In Vitro and In Vivo Investigation”

Benedetta Brugnoli, Eleni Axioti, Philippa L. Jacob, Nana A. Berfi, Lei Lei, Benoit Couturaud, Veeren M. Chauhan, Robert J. Cavanagh, Luciano Galantini, Iolanda Francolini & Vincenzo Taresco

Published in Macromolecular Chemistry and Physics (2025)

🔗 https://doi.org/10.1002/macp.202500259

🎧 Subscribe to the WOrM Podcast for more bright ideas in molecular sensing, smart polymers, and organism-level science.

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

📧 [email protected]