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Published on: February 17, 2023
Bridging Kidney Organoid Innovation and Regenerative Medicine: Current Advances and Future Directions
Bohong Guo1,2, Jingyuan Zhang3, Xuening Fang1
1Department of Urology, The First Affiliated Hospital, Henan University, Kaifeng, China.
Abstract:
Chronic kidney disease (CKD) has emerged as a critical public health challenge worldwide, and organ donor shortages underscore the urgent need for alternative therapeutic strategies. Advances in stem cell technologies have enabled the generation of kidney organoids, providing innovative platforms to model renal development, investigate disease mechanisms, support drug discovery, and explore applications in regenerative medicine. Yet, limitations such as immature tissue architecture, insufficient vascularisation, and unaddressed safety concerns still hinder their translation into regenerative medicine. In this review, we summarise the fundamentals of kidney development, current differentiation approaches, and the signalling and epigenetic mechanisms underlying organoid lineage specification. We further highlight the roles of bioengineering innovations and single-cell transcriptomics in establishing evaluation frameworks and enhancing structural complexity. We finally emphasise that existing optimisation frameworks, primarily focused on improving differentiation efficiency and enforcing relatively restricted lineage specification, may prove inadequate for bridging the gap to clinical translation. Instead, the most promising paradigm shift involves the convergence of bioengineering modulation and high-resolution functional assessment to facilitate the synchronised advancement of organoid complexity and physiological utility.
Insights
Kidney organoids offer promise for treating chronic kidney disease (CKD) but require bioengineering and functional assessments for clinical use. Current methods need enhancement for complex tissue development and patient safety in regenerative medicine.
Area of Science:
- Regenerative Medicine and Stem Cell Biology
- Nephrology and Kidney Disease Research
Background:
- Chronic kidney disease (CKD) is a global health issue with critical organ donor shortages.
- Kidney organoids derived from stem cells are valuable tools for studying kidney development, disease, and drug discovery.
- Current kidney organoids face limitations including immature structure, poor vascularization, and safety concerns, hindering clinical translation.
Purpose of the Study:
- To review kidney development fundamentals and current stem cell-based organoid differentiation strategies.
- To explore signaling and epigenetic mechanisms governing organoid lineage specification.
- To highlight bioengineering and single-cell transcriptomics roles in organoid evaluation and complexity enhancement.
Main Methods:
- Review of existing literature on kidney development, stem cell differentiation protocols, and organoid generation.
- Analysis of signaling pathways and epigenetic factors influencing kidney organoid lineage commitment.
- Examination of bioengineering techniques and single-cell transcriptomics for organoid structural and functional assessment.
Main Results:
- Current differentiation methods and optimization frameworks are insufficient for clinical translation of kidney organoids.
- Bioengineering innovations and single-cell transcriptomics are crucial for improving organoid complexity and evaluation.
- Existing approaches focusing solely on differentiation efficiency and lineage restriction are inadequate.
Conclusions:
- A paradigm shift is needed, integrating bioengineering modulation with high-resolution functional assessment.
- Synchronized advancement of organoid complexity and physiological utility is essential for clinical application.
- Future strategies must focus on enhancing vascularization, tissue architecture, and functional maturity for regenerative medicine.
