For decades, leukemia research has been limited by a critical challenge: how do you safely study a disease that originates deep inside our bones?
The answer has been a combination of animal models and simplified lab cultures, but both have significant drawbacks.
Now, two independent teams of scientists have unveiled a groundbreaking solution: a bioengineered bone marrow grown entirely from human cells. [1] [2]
This innovation isn’t just a scientific curiosity. It’s a living, functional model of the human bone marrow that can sustain blood formation for weeks, offering an unprecedented window into how blood cancers like leukemia develop and respond to treatment. [1]
Building a “Home” for Blood Cancer Research
Creating a realistic bone marrow model is incredibly complex. It’s not just a collection of cells; it’s a sophisticated microenvironment, or “niche,” containing blood vessels, bone cells, nerves, and immune cells.
A team at the University of Basel in Switzerland focused on recreating a critical part of this environment called the endosteal niche, which plays a key role in blood formation and cancer resistance. [1]
Their model, named the Engineered Vascularized Osteoblastic Niche (eVON), is built on a porous, bone-like scaffold made of hydroxyapatite.
They then guide human pluripotent stem cells—master cells that can become any cell type—to grow and mature within this structure, forming a complex, multi-layered bone marrow environment. [3]
| Model Component | Description |
|---|---|
| Scaffold | Porous hydroxyapatite (a natural bone component) |
| Cell Source | Human induced pluripotent stem cells (hiPSCs) |
| Cell Types | Blood vessels, bone cells, nerves, immune cells |
| Functionality | Sustains human blood formation for weeks |
“Our model brings us closer to the biology of the human organism,” said Ivan Martin, one of the research leaders. “It could serve as a complement to many animal experiments in the study of blood formation in both healthy and diseased conditions.” [1]
A New Platform for Testing Cancer Therapies
Meanwhile, scientists at the University of Glasgow have already put a similar bioengineered bone marrow model to work. They successfully used their model to evaluate a cutting-edge combination of CRISPR gene editing and CAR T-cell therapy for acute myeloid leukemia (AML). [3]
This is a game-changer. Instead of testing a powerful and potentially risky therapy directly in humans or relying on less accurate animal models, researchers can now use a human-relevant lab model to see how the treatment works.
It provides a crucial bridge between early-stage lab work and human clinical trials, making the drug development process safer and more efficient.
Why This Matters for Leukemia Patients
The development of these bioengineered bone marrow models has several profound implications for the future of leukemia treatment.
First, it allows for more accurate research. By studying leukemia cells within a realistic human bone marrow environment, scientists can gain a much deeper understanding of how the disease progresses and why it sometimes becomes resistant to treatment.
Second, it accelerates drug development. New therapies can be tested more quickly and effectively, and researchers can even use the models to develop personalized treatments tailored to a specific patient’s cancer.
Finally, it represents a major step towards reducing animal testing. These human-cell-based models provide a more ethical and sustainable way to conduct vital cancer research, ensuring that scientific advancements are not made at the expense of animal welfare.
The Future of Cancer Research is Here
While there are still challenges to overcome, such as miniaturizing the models for large-scale drug screening, this breakthrough is a pivotal moment in the fight against leukemia.
By creating a “home away from home” for bone marrow cells, scientists have unlocked a powerful new tool that will shape the future of cancer research for years to come.
References
[1] Majid, A. (2025, December 8). Breakthrough bone marrow model could reduce need for animal testing. The Chemical Engineer. https://www.thechemicalengineer.com/news/breakthrough-bone-marrow-model-could-reduce-need-for-animal-testing/
[2] Rise for Animals. (2025, December 5). Non-Animal & Human-Relevant Research News. https://riseforanimals.org/news/sci-news-nov-2025/
[3] Regenerative Medicine Foundation. (2025, December 10). Bone Marrow Model Created Entirely from Human Cells. https://regmedfoundation.org/2025/12/10/bone-marrow-model-created-entirely-from-human-cells/
