Updated: Nov 17, 2025

In Vivo Gene Transfer to the Rabbit Common Carotid Artery Endothelium
Published on: May 6, 2018
Jianglin Fan1,2,3, Yanli Wang1, Y Eugene Chen4
1Department of Pathology, Xi'an Medical University, Xi'an, China.
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This review examines how new gene-editing tools have improved the use of rabbits as models for studying human heart disease and cholesterol metabolism, overcoming historical limitations in genetic manipulation.
Area of Science:
Background:
No prior work had resolved the full potential of lagomorph models for human heart disease studies. Researchers long relied on cholesterol-fed animals to mimic human atherosclerosis. These traditional methods provided limited insights into specific genetic pathways. That uncertainty drove the need for more precise genetic tools. Scientists historically struggled to perform targeted gene modifications in this species. The absence of reliable embryonic stem cell lines created a major barrier. This gap motivated the development of alternative strategies for genomic alteration. Experts now recognize these animals as superior to rodents for certain physiological investigations.
Purpose Of The Study:
The aim of this review is to update the current status of genetically modified rabbits in cardiovascular research. The authors seek to address how recent technological advancements have changed the field. They examine the transition from traditional transgenic methods to modern genome editing. This work addresses the long-standing challenges associated with genetic manipulation in this species. The researchers intend to highlight the benefits of using these animals over rodent models. They explain how these new tools help disclose molecular mechanisms of human disease. The study provides a perspective on how these developments will shape future investigations. This overview serves to clarify the current landscape of genetic engineering in this specific laboratory animal.
The researchers propose that genome editing tools, such as those enabling knock-out and knock-in modifications, allow for precise gene manipulation. This overcomes the historical reliance on simple cholesterol-fed models, providing a more accurate representation of human cardiovascular disease mechanisms compared to traditional rodent subjects.
The authors identify pronuclear microinjection as a historical method for creating transgenic animals. In contrast, modern genome editing technologies now facilitate more sophisticated knock-out and knock-in procedures, which were previously impossible due to the lack of embryonic stem cell lines in this species.
The researchers explain that homologous recombination-based manipulation was long restricted by the absence of specific embryonic stem cells. This technical necessity prevented the creation of targeted gene-deficient models, which are standard in mouse studies but were historically unattainable in this larger animal model.
Main Methods:
Review approach involved synthesizing data from the past several decades of literature. The authors evaluated various genetic engineering strategies applied to this specific animal model. This assessment focused on the transition from traditional transgenic methods to modern editing tools. The investigators scrutinized reports concerning both knock-out and knock-in animal generation. They compared these newer techniques against historical limitations in genomic manipulation. The analysis included an overview of how these models are utilized in lipid metabolism studies. The team examined the impact of phylogenetic proximity on experimental outcomes. This systematic summary provides a comprehensive look at the evolution of these laboratory subjects.
Main Results:
Key findings from the literature demonstrate that genome editing has dramatically extended the applications of these experimental animals. The authors report that these technologies now allow for precise gene functions to be disclosed. This represents a significant shift from the limitations faced over the last century. The review confirms that these models remain superior to rodents for investigating human disease pathways. Data indicate that previous obstacles, such as the lack of stem cells, have been effectively bypassed. The researchers highlight that these advancements enable more complex genetic investigations than were previously possible. The findings show that these models are essential for understanding human lipid metabolism. The summary emphasizes that the field has successfully integrated these new tools into current research practices.
Conclusions:
The authors suggest that genome editing has transformed the utility of these animal models. They propose that future studies will benefit from more precise knock-in and knock-out capabilities. Synthesis and implications indicate that these tools overcome previous technical hurdles in genetic engineering. Researchers emphasize that the phylogenetic proximity to humans remains a primary advantage. The review highlights how these models provide clearer insights into lipid metabolism. Experts note that the field has moved beyond simple transgenic approaches. The authors conclude that these advancements will accelerate the discovery of molecular disease mechanisms. This work confirms that the era of precise genetic manipulation in this species has arrived.
The authors note that genome information and stem cell availability serve as critical components for successful genetic modification. The lack of these resources previously hampered the ability to disclose molecular pathways, but recent technological shifts have successfully bypassed these specific biological constraints.
The researchers highlight that these animals are phylogenetically closer to humans than mice or rats. This measurement of evolutionary distance suggests that they offer superior predictive value for human lipid metabolism and heart disease compared to the more commonly used rodent models.
The authors propose that future applications will focus on expanding the range of knock-in and knock-out models. They suggest that these advancements will continue to clarify the molecular basis of human disease, moving the field toward more targeted therapeutic investigations.