Adult Stem Cell Therapeutics in Diabetic Retinopathy
Sriprachodaya Gaddam1, Ramesh Periasamy2, Rajashekhar Gangaraju3,4
1Department of Ophthalmology, University of Tennessee Health Science Center, College of Medicine, Memphis, TN 38163, USA. sg3538@drexel.edu.
Abstract:
Diabetic retinopathy (DR), a complication of diabetes, is one of the leading causes of blindness in working-age adults. The pathology of the disease prevents the endogenous stem cells from participating in the natural repair of the diseased retina. Current treatments, specifically stem cell therapeutics, have shown variable efficacy in preclinical models due to the multi-faceted nature of the disease. Among the various adult stem cells, mesenchymal stem cells, especially those derived from adipose tissue and bone marrow, have been explored as a possible treatment for DR. This review summarizes the current literature around the various adult stem cell treatments for the disease and outlines the benefits and limitations of the therapeutics that are being explored in the field. The paracrine nature of adipose stem cells, in particular, has been highlighted as a potential solution to the lack of a homing and conducive environment that poses a challenge to the implantation of exogenous stem cells in the target tissue. Various methods of mesenchymal stem cell priming to adapt to a hostile retinal microenvironment have been discussed. Current clinical trials and potential safety concerns have been examined, and the future directions of stem cell therapeutics in DR have also been contemplated.
Insights
Mesenchymal stem cells show promise for treating diabetic retinopathy (DR), a leading cause of blindness. Their paracrine effects and priming strategies offer potential solutions for retinal repair despite challenges in hostile microenvironments.
Area of Science:
- Ophthalmology
- Regenerative Medicine
- Endocrinology
Background:
- Diabetic retinopathy (DR) is a major cause of vision loss in working-age adults.
- Disease pathology impairs endogenous retinal repair mechanisms.
- Current treatments for DR have variable efficacy, necessitating novel therapeutic approaches.
Purpose of the Study:
- To review current literature on adult stem cell therapies for diabetic retinopathy.
- To outline the benefits and limitations of explored stem cell therapeutics.
- To discuss challenges and future directions in stem cell treatment for DR.
Main Methods:
- Review of preclinical and clinical literature on stem cell treatments for DR.
- Focus on mesenchymal stem cells (MSCs) from adipose tissue and bone marrow.
- Analysis of stem cell priming techniques and paracrine effects.
Main Results:
- Mesenchymal stem cells, particularly adipose-derived stem cells, show therapeutic potential for DR.
- The paracrine activity of adipose stem cells is a key advantage.
- Priming strategies can enhance MSC adaptation to the retinal microenvironment.
Conclusions:
- Stem cell therapeutics, especially MSCs, offer a promising avenue for DR treatment.
- Addressing challenges like hostile microenvironments and optimizing cell properties is crucial.
- Further research into clinical trials and safety is warranted for advancing stem cell therapy in DR.
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