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Personalizing cardiac regenerative therapy: At the heart of Pim1 kinase
Kaitlen Samse1, Nirmala Hariharan1, Mark A Sussman1
1San Diego Heart Research Institute, San Diego State University, San Diego, CA 92182, United States.
Abstract:
During cardiac aging, DNA damage and environmental stressors contribute to telomeric shortening and human cardiac progenitor cells acquire a senescent phenotype that leads to decreased stem cell function. Reversion of this phenotype through genetic modification is essential to advance regenerative therapy. Studies in the cardiac specific overexpression and subcellular targeting of Pim1 kinase demonstrate its influence on regeneration, proliferation, survival, metabolism and senescence. The cardioprotective effects of Pim1 modification can be picked apart and enhanced by targeting the kinase to distinct subcellular compartments, allowing for selection of specific phenotypic traits after molecular modification. In this perspective, we examine the therapeutic implications of Pim1 to encourage the personalization of cardiac regenerative therapy.
Insights
Genetic modification of Pim1 kinase can reverse cellular senescence in aging heart progenitor cells, improving their function for regenerative therapies. Targeting Pim1 to specific cell parts enhances its protective effects for personalized cardiac repair.
Area of Science:
- Cardiovascular Biology
- Cellular Senescence
- Regenerative Medicine
Background:
- Cardiac aging involves DNA damage, telomere shortening, and senescence in cardiac progenitor cells, impairing regenerative capacity.
- Cellular senescence in the heart contributes to age-related dysfunction and reduced regenerative potential.
- Genetic modification offers a potential strategy to restore function in aging cardiac cells.
Purpose of the Study:
- To explore the therapeutic potential of Pim1 kinase in reversing cardiac progenitor cell senescence.
- To investigate how subcellular targeting of Pim1 kinase influences its cardioprotective and regenerative effects.
- To advocate for personalized cardiac regenerative therapy strategies based on Pim1 modulation.
Main Methods:
- Review of studies on cardiac-specific overexpression and subcellular targeting of Pim1 kinase.
- Analysis of Pim1 kinase's role in cellular processes including regeneration, proliferation, survival, metabolism, and senescence.
- Examination of how distinct subcellular localization of Pim1 impacts phenotypic traits.
Main Results:
- Pim1 kinase influences key cellular functions relevant to cardiac regeneration, including proliferation, survival, and metabolism.
- Targeting Pim1 kinase to specific subcellular compartments allows for modulation of its cardioprotective effects and phenotypic outcomes.
- Pim1 kinase activity is linked to the reversal of senescence in cardiac progenitor cells.
Conclusions:
- Pim1 kinase is a promising target for mitigating cardiac aging and enhancing regenerative potential.
- Subcellular targeting of Pim1 kinase offers a method for tailoring therapeutic effects in cardiac repair.
- Personalized approaches to cardiac regenerative therapy, leveraging Pim1 modulation, hold significant therapeutic promise.
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