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Tuberous Sclerosis Complex Kidney Lesion Pathogenesis: A Developmental Perspective.

Adam Pietrobon1,2,3, William L Stanford1,2,3

  • 1The Sprott Centre for Stem Cell Research, Regenerative Medicine Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.

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|April 15, 2023
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Summary
This summary is machine-generated.

Tuberous sclerosis complex (TSC) kidney lesions arise from developmental mutations. A new model suggests a phenotypic continuum driven by variably timed second-hit events, offering a framework for future research.

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Area of Science:

  • Nephrology
  • Developmental Biology
  • Genetics

Background:

  • Tuberous sclerosis complex (TSC) exhibits diverse kidney pathology despite a known genetic cause.
  • The precise mechanisms driving TSC lesion development remain incompletely understood.

Approach:

  • This review integrates clinical data, human tissue studies, and animal models.
  • It incorporates insights from organoid and single-cell sequencing technologies.
  • A developmental perspective is applied to analyze mutational timing and cell-of-origin.

Key Points:

  • A novel pathogenesis model is proposed, suggesting a phenotypic continuum for TSC kidney lesions.
  • Lesions are hypothesized to develop via mutagenesis during embryogenesis.
  • Variably timed second-hit events are central to this model.

Conclusions:

  • The proposed model provides a framework for understanding TSC kidney lesion development.
  • This conceptual framework can guide hypothesis testing in TSC research.
  • The model is applicable to both kidney and other affected tissues in TSC.