Induced pluripotent stem cells from urine of Duchenne muscular dystrophy patients
Fareeha Faizan Ghori1, Mohsin Wahid1,2
1Stem Cells and Regenerative Medicine Research Group, Dow Research Institute of Biotechnology and Biomedical Sciences, Dow University of Health Sciences, Karachi, Pakistan.
Background:
The most common muscular dystrophy, Duchenne muscular dystrophy (DMD), is a lethal, X-linked disorder with no widespread cure. Worldwide, in vitro studies involving new, mutation-specific cures and regenerative therapies are employing disease-specific patient-specific cells. However, these may not be completely relevant for Pakistani children because of the human genome diversities and geographic variation in mutation type and frequency. Therefore, this study aimed to generate DMD induced pluripotent stem cells (iPSCs) from the urine of Pakistani children with DMD, to serve as a precious source of differentiated cells, such as Pakistani DMD-cardiomyocytes, for future disease-modelling, drug testing, and gene therapy.
Methods:
Urine-derived cells (UDCs) isolated from mid-stream urine underwent molecular characterization and cellular reprogramming towards iPSCs using the episomal vector system followed by molecular profiling of the iPSCs.
Results:
Colonies of elongated and spindle-shaped or rounded rice-grain like UDCs were spotted 4-7 days after plating and expanded rapidly with a second passage at 2-3 weeks. Multicolor flow cytometry confirmed the expression of mesenchymal stem-cell markers. The reprogramed iPSCs consisted of colonies of round, tightly-packed cells with large nuclei that were positively fluorescent for the pluripotency markers octamer binding transcription factor-4 (OCT-4), tumour resistance antigen 1-60 (TRA-1-60), and stage specific embryonic 4 antigen (SSEA-4), but not for the negative pluripotency marker SSEA-1. To the best of our knowledge, this was the first time DMD-iPSCs have been generated for Pakistani children.
Conclusion:
This integration-free, feeder-free, efficient, and reproducible reprogramming method employed UDCs. Urine is a low-cost, non-invasive, painless, and repeatable source of rapidly expandable cells from children and morbid individuals for obtaining autologous cells for drug-assays and disease-modelling, suitable for DMD and other debilitating diseases.
Insights
Researchers generated Duchenne muscular dystrophy (DMD) induced pluripotent stem cells (iPSCs) from Pakistani children’s urine. This provides a valuable resource for DMD disease modeling and potential gene therapies tailored to local populations.
Area of Science:
- Biomedical Research
- Stem Cell Biology
- Genetics
Background:
- Duchenne muscular dystrophy (DMD) is a common, lethal X-linked disorder lacking a cure.
- Existing in vitro studies may not fully represent Pakistani children due to genetic diversity.
- A need exists for patient-specific cell sources for DMD research in Pakistan.
Purpose of the Study:
- To generate DMD-induced pluripotent stem cells (iPSCs) from Pakistani children with DMD.
- To establish a valuable cell source for future disease modeling, drug testing, and gene therapy.
- To address the specific genetic variations within the Pakistani population.
Main Methods:
- Urine-derived cells (UDCs) were isolated and characterized.
- UDCs were reprogrammed into iPSCs using an episomal vector system.
- Reprogrammed iPSCs underwent molecular profiling for pluripotency markers.
Main Results:
- Successfully generated DMD-specific iPSCs from Pakistani children's urine.
- Confirmed pluripotency of generated iPSCs using markers like OCT-4, TRA-1-60, and SSEA-4.
- This marks the first reported generation of DMD-iPSCs for Pakistani children.
Conclusions:
- An efficient, integration-free reprogramming method using UDCs was established.
- Urine offers a non-invasive, repeatable cell source for autologous cell generation.
- This approach is suitable for DMD and other debilitating diseases, enabling personalized medicine.
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