Mini-model Systems
Mini-model Systems - Related Videos
10:16
Brain Organoid Generation from Induced Pluripotent Stem Cells in Home-Made Mini Bioreactors
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Cited by 7 •
2021
Here we describe a protocol for generating brain organoids from human induced pluripotent stem cells (iPSCs). To obtain brain organoids in large quantities and of high quality, we use home-made mini bioreactors.
11:20
A Rodent Model of The Ross Operation: Syngeneic Pulmonary Artery Graft Implantation in A Systemic Position
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Cited by 1 •
2022
We demonstrate how to establish a murine model of pulmonary root implantation into the descending aorta to simulate the Ross procedure. This model enables the medium/long-term evaluation of pulmonary autograft remodeling in a systemic position, representing the basis of developing therapeutic strategies to promote its adaptation.
01:14
Pharmacodynamic Models: Link Model and Systems Pharmacodynamic Model
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2026
The link model is a fundamental pharmacokinetic-pharmacodynamic (PK–PD) approach to account for delayed drug responses when the observed effect does not immediately correlate with the drug's plasma concentration peak. This delay is mathematically addressed by introducing an effect compartment concentration, Ce, which is kinetically linked to the plasma concentration, Cp, via a first-order rate constant, ke0. The linkage allows for a more accurate prediction of drug effects over time. A higher...
09:52
A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites
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Cited by 14 •
2014
Animal models have proven to be invaluable tools in defining host and pathogen specific mechanisms that contribute to the development of chronic inflammation. Here we describe a mouse model of oral infection with the human pathogen Porphyromonas gingivalis and detail methodologies to assess the progression of inflammation at local and systemic sites.
09:03
Generating Spheroids from Various Chondrocytes using Low-Adhesive Conditions under Gravity and Homemade Mini-Bioreactors
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2025
This study describes a method for producing chondrocytic spheroids by aggregating cells into spheroids under low-adhesion conditions using gravity, followed by culturing the resulting spheroids in mini-bioreactors.
FAQs
Mini-model systems support causal testing by isolating a gene, regulatory pathway, or genotype from unrelated biological complexity. Researchers can then introduce a targeted change and compare the resulting molecular or cellular phenotype under controlled conditions. This design helps connect a specific genetic difference with an observed effect, rather than treating the phenotype as the product of an entire organism.
Preserving key mechanisms is essential because simplification is useful only when the selected system still reflects the process being studied. The model can make gene regulation or genotype-phenotype relationships easier to examine, while omission of other biological features limits what the results mean. For this reason, findings are best interpreted alongside, rather than instead of, whole-organism studies.
The critical choices are the feature retained, the genetic variable changed, the conditions used for comparison, and the phenotype measured. Aligning these elements with the research question allows investigators to distinguish effects at the molecular or cellular level. It also keeps conclusions focused on the selected mechanism instead of extending them beyond what the simplified system can represent.
A basic workflow starts by selecting or constructing a system that contains the gene, regulatory pathway, or genotype of interest. Investigators apply a targeted genetic change, maintain the comparison under controlled conditions, and measure the resulting molecular or cellular phenotype. This sequence creates a direct experimental link between the manipulated genetic feature and its observed consequence.
They are particularly useful when the goal is to test the function of a genetic variant, examine how a gene is regulated, or determine how a selected genotype changes a cellular or molecular phenotype. Because the system narrows the experimental focus, it can help investigators evaluate specific mechanisms before extending the question to more complex biological settings.
Results from a simplified system can provide a mechanistic bridge between a genetic change and broader biological questions. In genetics, that bridge may support investigation of disease biology, development, or potential therapeutic strategies. The systems therefore complement whole-organism research by supplying focused evidence about genes and regulatory processes that can be examined before, or together with, more complex studies.