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

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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]

How can a worm’s intestine influence its descendants’ lifespan? This episode explores how lysosomes send metabolic signals through the epigenome to extend longevity across generations.

Researchers found that activating lysosomal lipid metabolism triggers transcriptional up-regulation of a histone variant, H3.3 (his-71), in the intestine. This histone is transported to the germ line, where it’s methylated at K79 by the methyltransferase DOT-1.3. The result is a heritable epigenetic state that promotes longer life across multiple generations of C. elegans.

The work reveals how metabolic signalling through lysosomes interacts with chromatin to link soma and germ line, showing how environmental changes like starvation can shape longevity inheritance.

📖 Based on: Zhang Q., Dang W., Wang M.C. Science (2025). “Lysosomes signal through the epigenome to regulate longevity across generations.” https://doi.org/10.1126/science.adn8754

🎧 Subscribe to the WOrM Podcast for more deep dives into the molecular lives of worms.

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, we dive into a new version of WormGazer as described in a recent GeroScience paper. This implementation automates movement monitoring in C. elegans populations as a rapid healthspan measure, offering a shortcut to detect ageing interventions and trade-offs.

Highlights include:

• Monitoring multiple Petri dishes in parallel with cameras and image analysis over 7–14 days 

• Showing that most functional decline happens in the first week of adulthood 

• Validating with age-1(hx546) mutants, which remain active longer but move more slowly early on 

• A dose-response test with sulfamethoxazole (SMX) where movement improvements are detectable within 7 days, compared to 40 days needed for traditional lifespan assays 

• The benefit: non-invasive, scalable, and faster detection of ageing effects and negative trade-offs 

📖 Based on the research article:

“Rapid measurement of ageing by automated monitoring of movement of C. elegans populations”

Giulia Zavagno, Adelaide Raimundo, Andy Kirby, Christopher Saunter & David Weinkove

Published in GeroScience (November 2023) 

🔗 https://doi.org/10.1007/s11357-023-00998-w 

🎧 Subscribe to the WOrM Podcast for more breakthroughs in whole-organism ageing, automation, and quantitative 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

📧 [email protected]

Is a wiring diagram enough to understand the brain? In this episode, we dive into how researchers combined whole-brain optogenetic stimulation with calcium imaging in C. elegans to reveal functional neural connections that go beyond the traditional connectome.

Key insights include:

• A new functional atlas built from ~23,000 neuron pair experiments

• How neuropeptides and extrasynaptic signals contribute to brain activity

• Strong functional links often exist without anatomical connections

• A data-driven rethinking of how neural signals propagate and integrate

• Implications for plasticity, brain evolution, and full-organism modelling

This episode sheds light on how small brains can perform complex processing — by rewiring our assumptions about wiring.

📖 Based on the research article:

“Neural signal propagation atlas of Caenorhabditis elegans”

Francesco Randi, Anuj K. Sharma, Sophie Dvali & Andrew M. Leifer

Published in Nature (2023)

🔗 https://doi.org/10.1038/s41586-023-06683-4

🎧 Subscribe to the WOrM Podcast for more full-organism insights into behaviour, neuroscience, and beyond.

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]

Worms without eyes shouldn’t see colour — yet C. elegans can. In this episode, we dive into a landmark study that shows how worms use blue-to-amber light ratios to make foraging decisions. When exposed to toxic blue pigments like pyocyanin, worms avoid them — but only under white light. The twist? They do it all without opsins.

We explore:

• How worms detect and avoid blue-pigment-secreting P. aeruginosa

• Why light potentiates avoidance, but only for certain spectral ratios

• How lite-1 and GUR-3 receptors mediate spectral sensitivity

• Natural variation in colour preference across wild strains

• The discovery that stress-related genes jkk-1 and lec-3 underlie colour-guided behaviour

This episode uncovers a new form of opsin-free colour vision, expanding our understanding of how simple organisms read complex environments.

📖 Based on the research article:

“C. elegans discriminates colors to guide foraging”

Dipon Ghosh, Dongyeop Lee, Xin Jin, H. Robert Horvitz & Michael N. Nitabach

Published in Science (2021)

🔗 https://doi.org/10.1126/science.abd3010

🎧 Subscribe to the WOrM Podcast for more full-organism surprises in perception, evolution, and 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]

How does a worm know what’s good for dinner? In this episode, we uncover how C. elegans can distinguish between helpful and harmful microbes — and it’s all down to polyamines. These microbe-produced metabolites act like scent beacons, guiding worms to nutritious bacteria like E. coli while steering them away from pathogens.

We explore:

• How chemosensory neurons detect polyamines like cadaverine and putrescine

• Why ADF and AWC neurons are tuned to sniff out E. coli-enriched scents

• How the AIB interneuron acts as a decision hub for foraging

• Why worms lose interest in mutant E. coli strains lacking polyamines

• What this tells us about host-microbe interactions and innate sensory coding

📖 Based on the research article:

“Chemosensory detection of polyamine metabolites guides C. elegans to nutritive microbes”

Benjamin Brissette, Lia Ficaro, Chenguang Li, et al.

Published in Science Advances (2024)

🔗 https://doi.org/10.1126/sciadv.adj4387

🎧 Subscribe to the WOrM Podcast for more full-organism discoveries in behaviour, sensory biology, and microbe-host interactions.

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]

Why do C. elegans lay eggs only when food is around? In this episode, we explore a newly uncovered neuromodulatory circuit that links food detection to reproductive behaviour using a clever form of disinhibition. At the heart of this is the AVK interneuron — silenced by dopamine when food is present — which normally blocks egg-laying until conditions are right.

We unpack:

• How AVK neurons act as gatekeepers for egg-laying behaviour

• Dopamine from food-sensing neurons inhibits AVKs via DOP-3 receptors

• AVKs release a cocktail of neuropeptides (PDF-1, NLP-10, NLP-21) that modulate downstream AIY neurons

• Functional imaging, CRISPR mutants, and optogenetics map the full food-to-egg pathway

• How this reveals general principles of neuromodulation and disinhibition

📖 Based on the research article:

“Food sensing controls C. elegans reproductive behavior by neuromodulatory disinhibition”

Yen-Chih Chen, Kara E. Zang, Hassan Ahamed, Niels Ringstad

Published in Science Advances (2025)

🔗 https://doi.org/10.1126/sciadv.adu5829

🎧 Subscribe to the WOrM Podcast for more full-organism insights at the interface of environment, brain, and 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]