# GlycoWorks

- **Event:** [Built with Claude: Life Sciences](https://cerebralvalley.ai/e/built-with-claude-life-sciences)
- **When:** Jul 7 at 12:00 PM – Jul 14 at 12:00 AM (EDT)
- **Where:** Online
- **Team:** [Chadakarn Sirasitthichoke](https://cerebralvalley.ai/u/Gift_CS)
- **GitHub:** https://github.com/Chadakarn23CS/Hackathon-Claude
- **Demo video:** https://youtu.be/Aw47CJOsea4
- **Gallery:** https://cerebralvalley.ai/e/built-with-claude-life-sciences/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/built-with-claude-life-sciences/hackathon/gallery/189

What I built: GlycoTwin, an open mechanistic digital twin connecting a bioreactor knob to the antibody's Fc N-glycan — a quality attribute governing potency, half-life, and immunogenicity. A 9-state CHO fed-batch model feeds an ER→Golgi enzyme train, so any process parameter propagates to galactosylation, afucosylation, sialylation, and high-mannose. Every parameter comes from public literature; nothing is fit to proprietary data. I tested one question: does Fc-galactosylation degrade at scale because CO₂ acidifies the Golgi — and if not, what controls it?

What I found: The assumption is wrong. As CO₂ stripping falls from bench to 2000 L and pCO₂ climbs ~60→74 mmHg, galactosylation barely moves (~52→53%), because the CO₂ swing shifts Golgi-lumen pH only 6.43→6.38 — straddling the galactosyltransferase optimum (~6.4) on the flat top of its activity curve. Oxygen has zero effect. The real lever is the clone: overexpressing B4GALT1 recovers ~35 points; galactose feed and Mn²⁺ ~10 each; CO₂ stripping ~0. The model also reproduces the sub-5% sensitivity ceiling from a 2026 meta-analysis it never saw during calibration.

Why it matters: Engineer the clone and media, not the CO₂ — productivity, not glycan quality, is the scale-up risk. Being mechanistic, the twin gives a bench-testable reason, not a black-box fit, and spans the CMC workflow: batch monitor, ICH-Q8 design space, Monte-Carlo capability, live control, and a governed agent loop. Fully open, reproducible from one script.

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Markdown version of https://cerebralvalley.ai/e/built-with-claude-life-sciences/hackathon/gallery/189. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt