Exploring Personalized Medicine Laboratory Animals

In the rapidly evolving field of personalized medicine, the role of
laboratory animals remains indispensable. Personalized medicine aims to
tailor medical treatment to the individual characteristics of each
patient, often based on genetic information. This approach promises to
revolutionize healthcare by providing more effective and targeted
therapies. However, the journey from concept to clinical application is
complex and requires robust pre-clinical models to ensure safety and
efficacy. Here, we explore how animal research contributes to the
development of personalized medicine and how these approaches are likely
to evolve.

The Role of Humanized Animal Models

One of the most significant advancements in this area is the development
of genetically humanized animal models. These models are engineered to
carry human genes, mutations, or even entire human chromosomes, making
them invaluable for studying human diseases and testing personalized
therapies. For instance, the hDMDdel52/mdx model, a humanized model for
Duchenne muscular dystrophy (DMD), has been instrumental in developing
mutation-specific treatments such as antisense-mediated exon skipping
and genome editing¹. These models allow researchers to observe the
effects of human-specific genetic interventions in a controlled
environment, providing critical insights that are not possible with
traditional animal models.

Addressing Intraspecies Variability

Personalized medicine is fundamentally based on the understanding that
small genetic differences can lead to significant variations in disease
progression and treatment response. This concept is not limited to
humans but extends to other species as well. Despite the inherent
variability within species, nonhuman animals remain the primary models
for pre-clinical research. However, this practice is increasingly being
questioned. Some researchers argue that human-based research should be
prioritized to obtain more accurate data about human diseases and drug
responses². This debate highlights the need for more sophisticated and
human-relevant models to bridge the gap between animal research and
human clinical trials.

The Importance of Care in Translational Medicine

The success of translational medicine, which aims to translate findings
from the laboratory to clinical settings, is closely linked to the care
provided to model animals. Poor care can lead to inadequate scientific
findings, undermining the reliability of pre-clinical studies.
Scientists are now integrating caring practices into their research to
ensure better, more translatable results. This approach emphasizes the
plasticity of model organisms and the constitutive role of care in
conditioning experimental systems³. By acknowledging the importance of
care, researchers can address new kinds of scientific uncertainty and
improve the standardization of animal models.

Future Directions

As personalized medicine continues to evolve, the role of laboratory
animals will also transform. The development of more sophisticated
humanized models and the integration of advanced technologies such as
CRISPR for genome editing will enhance our ability to study human
diseases in animal models. Additionally, the emphasis on care and
ethical considerations will lead to more humane and scientifically valid
research practices. Ultimately, the goal is to create a seamless
transition from pre-clinical studies to clinical applications, ensuring
that personalized therapies are safe, effective, and accessible to all
patients.

Laboratory animals play a crucial role in the development of
personalized medicine. By leveraging genetically humanized models,
addressing intraspecies variability, and emphasizing the importance of
care, researchers can overcome current challenges and pave the way for
more effective and targeted treatments. As these approaches continue to
evolve, the synergy between animal research and personalized medicine
will undoubtedly lead to groundbreaking advancements in healthcare.

References

1. [The use of genetically humanized animal models for personalized
medicine
approaches](https://journals.biologists.com/dmm/article/13/2/dmm041673/225280/The-use-of-genetically-humanized-animal-models-for)

2. [Animal models in an age of personalized
medicine.](https://www.tandfonline.com/doi/full/10.2217/pme.11.89)

3. [Realizing Potential in Translational
Medicine](https://www.journals.uchicago.edu/doi/10.1086/670805)

4. [Will \”personalized medicine\” need personalized laboratory
approach?](https://www.sciencedirect.com/science/article/abs/pii/S000989810800483X?via%3Dihub)

5. [Personalized laboratory medicine: a patient-centered future
approach](https://www.degruyter.com/document/doi/10.1515/cclm-2018-0181/html)