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[Accelerating Scientific Discovery: The Quest for Virtual Cells and Biological Foundation Models]-[Faster Science, Better Drugs]

a16z Podcast · B2 · 2025-09-15

Technology
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📋 Summary

Accelerating Scientific Discovery: The Quest for Virtual Cells and Biological Foundation Models

In a recent episode of the A16Z podcast, Patrick Hsu, co-founder of the ARC Institute, and Jorge Conde, a general partner at Andreessen Horowitz, discussed the ambitious goal of "making science move faster" by integrating artificial intelligence with biological research. The conversation centered on the development of "virtual cells" and the challenges of modernizing scientific discovery.

The Moonshot: Virtual Cells and Foundation Models

Patrick Hsu defines the mission of the ARC Institute as an attempt to "simulate human biology with foundation models." The core ambition is to create virtual cells—computational models capable of predicting how cells will respond to specific perturbations. Hsu draws a parallel to DeepMind’s AlphaFold, which revolutionized protein folding. Just as AlphaFold provides a 90% accurate structure for proteins, Hsu aims to reach a point where scientists can input a cell state (e.g., a fibroblast) and a desired outcome (e.g., a stem-like state), and the model will accurately predict the necessary perturbations.

Breaking the "Gordian Knot" of Scientific Incentives

Why is science currently so slow? Hsu describes the problem as a "Gordian knot" of incentives. Traditional academic structures often isolate disciplines and prioritize individual publication counts over collaborative, multidisciplinary breakthroughs. The ARC Institute seeks to remedy this by increasing the "collision frequency" between fields like neuroscience, immunology, and machine learning under one roof. By moving away from siloed research, they hope to tackle complex problems that require a broader, more integrated approach.

The "Language" of Biology and Scaling Laws

One of the most profound insights from the discussion is the difficulty of training AI on biology compared to text or images. Hsu notes that, "We don't speak the language of biology," often communicating with an "incredibly thick accent." Unlike language models that benefit from vast amounts of intuitive, unstructured data, biological data is often noisy or missing key components. However, Hsu remains optimistic about "scaling laws," suggesting that as we generate massive datasets—such as single-cell transcriptomics—we can use these as a "mirror" for protein function, eventually building a comprehensive, high-resolution understanding of cellular mechanics.

Bridging the Gap: From Discovery to Business

Jorge Conde highlights the capital intensity of the biotech industry and the persistent bottleneck of clinical trials. While AI can compress the time required for early drug discovery, the "making and testing" phases—moving from mice to monkeys to humans—remain slow and expensive. The guests emphasize that the industry must focus on "large patient populations" and high-impact diseases, similar to the success of GLP-1 agonists, to ensure that the economic rewards justify the immense R&D investment.

The Path Ahead: Hype vs. Heft

When asked to distinguish between hype and tangible progress, the guests offered clear distinctions:

  • Hype: Toxicity prediction models and the current, often vague, promises of "multimodal biological models."
  • Heft: Protein design and pathology AI, which are already demonstrating real-world utility in automating tasks and creating new molecular structures.

Ultimately, the guests agree that AI will soon become a "native part of the stack" in drug development. To push this vision forward, the ARC Institute has launched the Virtual Cell Challenge, an open competition designed to incentivize the global research community to build better perturbation prediction models. As Hsu concludes, the goal is not just to write papers, but to create tools that are "useful for experimentalists" and capable of fundamentally improving the human experience.

🎯Key Sentences

1
I want to make science faster.
2
Let's get into it.
3
Thanks for having me on.
4
Here I am.
5
Maybe that's not so tangible for people.
Expand All

📝Key Phrases

1
moonshot
2
incentive knots
3
multidisciplinary
4
collision frequency
5
flagship projects
Expand All

📖 Transcript

I want to make science faster.
Our moonshot is really to make virtual cells at ARC and simulate human biology with foundation models.
Why are we so worried about modeling entire bodies over time when we can't do it for an individual cell?
If we can figure out how to model the fundamental unit of biology, the cell, then from that we should be able to build.
My goal is to really try to figure out ways that we can improve the human experience in our lifetime.
There are a few things that, if we get them right in our lifetime, will fundamentally change the world.

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