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Genetically Engineered Human Kidney Cells for Real-Time Cytotoxicity Testing In Vitro
Miriam E Mossoba1, Sanah N Vohra2, Elmer Bigley3
1Neurotoxicology and In Vitro Toxicology Branch (NIVTB), Division of Applied Regulatory Toxicology (DART), Office of Applied Research and Safety Assessment (OARSA), Center for Food Safety and Applied Nutrition (CFSAN), Food and Drug Administration (FDA), Laurel, MD, USA. miriam.mossoba@fda.hhs.gov.
Researchers developed a novel human kidney cell line, HK2-Vi, for in vitro toxicology testing. This designer cell line offers a reagent-less, kinetic assay to directly measure toxin effects on kidney cell viability, accelerating safety assessments.
Area of Science:
- Biotechnology
- Toxicology
- Cell Biology
Background:
- Traditional toxicology relies on animal models, which are slow and costly.
- In vitro cellular models offer a faster, more economical alternative for toxicity testing.
- Developing reliable in vitro models is crucial for regulatory toxicology applications.
Purpose of the Study:
- To engineer a novel human kidney cell line for in vitro toxicology.
- To create a reagent-less, kinetic assay for measuring kidney cell viability.
- To support regulatory toxicology with advanced in vitro models.
Main Methods:
- Genetically engineered HK-2 human kidney cells using lentiviral transduction.
- Co-expressed Perceval HR (ATP/ADP biosensor) and pHRed (pH biosensor).
- Utilized flow cytometry and cell culture to isolate a single clonal cell line (HK2-Vi).
Main Results:
- Developed HK2-Vi, a designer human kidney cell line.
- HK2-Vi provides a reagent-less kinetic assay for cell viability.
- The cell line measures cytotoxicity of toxins on proximal tubule cells.
Conclusions:
- HK2-Vi is a valuable tool for in vitro toxicology testing.
- This method serves as a model for creating designer cell lines from other organs.
- The engineered cell line accelerates toxicological assessments and reduces costs.
