Cultured Meat Breakthrough: Hollow Fiber Bioreactors Bring Whole-Cut Chicken Closer to the Table

In a major stride for the future of food, scientists from the University of Tokyo have unveiled a technology that could finally bridge the gap between lab-grown meat and the dinner plate. Their innovation? A scalable hollow fiber bioreactor that enables the production of whole-cut cultured chicken meat—complete with texture, taste, and even muscle contraction.

While cultivated meat has long promised a cruelty-free, sustainable alternative to traditional animal farming, it has struggled with one essential problem: scale. Until now, lab-grown meat has been limited to ground textures or tiny tissue fragments. Producing thick, juicy, steak-like cuts has remained elusive—until this moment.

A Circulatory System for Lab-Grown Meat

At the heart of this breakthrough lies a deceptively simple concept: mimic the blood vessel system of living organisms to keep lab-grown tissues alive and functional.

Using 3D-printed scaffolds embedded with tightly packed, semipermeable hollow fibers, the research team created an artificial circulation system that delivers nutrients and oxygen to cells deep inside engineered muscle tissue. This overcomes one of cultured meat’s biggest obstacles: preventing necrosis in thick tissue by solving the diffusion limit.

The result? Chicken muscle tissue that not only grows centimeter-thick but also develops muscle fibers with natural alignment, improved texture, and enhanced flavor.

Whole-Cut Chicken from Cells—Not Chickens

The team produced more than 10 grams of whole-cut cultured chicken meat from an immortalized chicken fibroblast cell line, cultivated over just five days of active perfusion. The tissue had aligned muscle fibers, visible striated sarcomeres, and could even contract in response to electrical stimulation.

Chemical analysis showed that the cultured meat had flavor-enhancing amino acids, giving it a mouthfeel and taste profile similar to conventional chicken. Texture profile analysis (TPA) confirmed the meat’s chewiness and density had also improved—thanks to consistent muscle maturation across the tissue.

Automation Takes the Lead

To scale production, the researchers built a robot-assisted fiber threading system capable of assembling bioreactors with over 1,100 hollow fibers. This allowed for precise nutrient delivery across a 3D structure as large as a bar of soap—bringing scalability and consistency to the forefront.

Combined with stereolithographic 3D printing, this robotic system positions the platform for automated cultured meat production at an industrial scale.

Implications Beyond Meat

While the headline is chicken meat, the implications go far beyond the dinner plate. This top-down tissue engineering approach could revolutionize:

Organ biofabrication for transplantation
Biohybrid robotics using muscle actuators
Scalable drug testing models with perfused tissue
Sustainable food systems that eliminate animal slaughter

By eliminating the need for animal biopsies, integrating edible materials, and moving toward serum-free media, the technology also aligns with sustainability, animal ethics, and regulatory expectations.

The Future: Edible, Automated, Ethical

As cultured meat moves toward commercialization, technologies like the scalable hollow fiber bioreactor will be key to unlocking affordable, high-quality, whole-cut products. The researchers envision edible hollow fibers in future iterations, eliminating even the step of fiber removal post-culture.

“Imagine printing a steak the way we now print a circuit board,” said lead author Shoji Takeuchi. “This isn’t science fiction anymore.”

With further refinements in bioreactor design, material sourcing, and automation, this approach may soon redefine how we produce protein—not from animals, but from precision bioengineering.

Reference:

Nie, M., Shima, A., Yamamoto, M., & Takeuchi, S. (2025). Scalable tissue biofabrication via perfusable hollow fiber arrays for cultured meat applications. Trends in Biotechnology. DOI: 10.1016/j.tibtech.2025.02.022