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Vascular disease and stem cell therapies
Gabriel P Lasala1, Jose J Minguell
1TCA Cellular Therapy, Covington, LA 70433, USA. drlasala@tcacellulartherapy.com
Insights
Stem cells show promise for treating limb ischemia (LI), a complication of peripheral vascular disease. Bone marrow-derived mesenchymal stem cells may be superior to mononuclear cells, with combinations potentially offering enhanced benefits for LI patients.
Area of Science:
- Regenerative Medicine
- Vascular Biology
- Stem Cell Therapy
Background:
- Peripheral vascular disease is a primary cause of limb ischemia (LI), characterized by pain, ulcers, or gangrene.
- Atherosclerosis-driven peripheral arterial disease underlies most LI cases.
- Stem cell therapy has emerged as a potential treatment strategy for LI over the past decade.
Purpose of the Study:
- To review the current evidence and ongoing clinical trials for stem cell therapy in treating limb ischemia.
- To identify areas of consensus and controversy in the application of stem cells for LI.
- To highlight promising research directions for future stem cell-based therapies for LI.
Main Methods:
- Systematic review of published medical literature.
- Analysis of clinical trials registered on clinicaltrials.gov.
- Inclusion of cellular therapy experience from TCA.
Main Results:
- General agreement exists on the utility of stem cells for treating limb ischemia.
- Key areas of controversy include cell type, dosage, administration route, and efficacy evaluation methods.
Conclusions:
- Bone marrow-derived mesenchymal stem cells show comparable or superior efficacy to mononuclear cells.
- Combinations of cell types, including adult or induced pluripotent stem cells, may offer improved outcomes.
- Future research should explore combinations of stem cells with growth factors or extracellular matrix molecules for enhanced therapeutic effects in LI.
Introduction And Background:
Peripheral vascular disease is the leading cause of limb ischemia (LI). LI is manifested by claudication, ischemic rest pain, ulcers or gangrene. It is the result of peripheral arterial disease due to atherosclerosis. Over the last decade, several centers around the world have initiated clinical trials utilizing stem cells as a treatment for this disease.
Sources Of Data:
Published medical literature, clinical trials announced in clinical trials.gov and TCA cellular therapy experience.
Areas Of Agreement:
There is general agreement that stem cells are useful for LI.
Areas Of Controversy:
These arise from the type of cells, dose, route of administration and methods to evaluate efficacy.
Growing Points:
Growing evidence suggests that bone marrow derived-mesenchymal stem cells are as good as or superior to mononuclear cells, and a combination of both cell types may be even better.
Areas Timely For Developing Research:
Based on current trials and publications, several promising biological products could become part of the therapeutic arsenal for LI. This may include combinations of more than one type of adult/induced pluripotent stem cells/embryonic stem cells, use of stem cells with growth factors or extracellular matrix molecules.
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