Regenerative medicine for stroke - are we there yet?

Area of Science:

• Neuroscience
• Regenerative Medicine
• Cell Biology

Background:

• Cell-based therapy using stem cells (SCs) is a promising, yet challenging, field for neurological disorders.
• Stroke has been a primary focus for the clinical application of SCs, but safety concerns and a need for generalization persist.
• Preclinical research is crucial for advancing SC therapy for stroke.

Purpose of the Study:

• To explore the potential of stem cell (SC) therapy for stroke.
• To analyze the distinct phases of stroke (acute, subacute, chronic) and their associated pathological events.
• To investigate how different SC types and their signaling properties could be matched to specific stroke phases for optimized therapeutic effects.

Main Methods:

• Review of current stem cell (SC) biology and cell-based therapy research in the context of stroke.
• Analysis of the temporal dynamics of pathological events during acute, subacute, and chronic stroke phases.
• Examination of cell-autonomous and non-cell-autonomous signaling mechanisms of various SC types.

Main Results:

• Stroke progression involves distinct yet overlapping events across acute, subacute, and chronic phases, including tissue degeneration and remodeling.
• Different stem cell (SC) types possess unique properties that can be leveraged through specific signaling pathways.
• The intrinsic characteristics of SCs suggest potential for phase-specific therapeutic applications in stroke.

Conclusions:

• Matching specific stem cell (SC) sources to the distinct phases of stroke (acute or chronic) may enhance therapeutic efficacy.
• Further definition of therapeutic expectations for SC therapy in stroke is needed.
• Optimizing SC use in the clinic requires a better understanding of SC properties in relation to stroke pathophysiology.