In vivo therapy for prenatal repair of the ovine fetal myelomeningocele model using human umbilical cord-derived mesenchymal stem cells: proof of principle
Abstract
Abstract Objectives Animal models suggest that combining mesenchymal stromal cells (MSCs) with prenatal myelomeningocele (MMC) repair may help preserve spinal cord function. This study assessed the feasibility of administration human umbilical cord-derived MSCs during prenatal repair of MMC in a sheep model. Methods MMC (L1–L5) were surgically created in 11 fetal lambs at 75 days. Seven underwent repair 25 days later – five with and two without MSCs. A high-dose, ready-to-use MSCs product (Desacell®), derived from healthy human neonatal umbilical cord tissue was administered in five cases. Each received 1 mL of Desacell® gel containing 30 million MSCs directly to the spinal cord. All fetuses underwent multilayer dural myofascial patching and skin closure. Results Of the seven treated lambs, three (two with MSCs, one without) survived to term (144–147 days gestation). Motor function was evaluated using the sheep locomotor rating scale before euthanasia. MMC sites were excised en-bloc. Mean large neuron densities in gray matter were 20.4, 15, and 13.1 per mm2, respectively. Conclusions This is the first report of successful local administration of MSCs during in utero MMC repair in a sheep model using Desacell®, a ready-to-use stem cell product. MSCs administration was feasible in all intended cases, however, the limited sample size restricted comparative outcomes analyses.
Read the paper
Related studies
- Global, regional, and national burden of hepatitis B, 1990–2019: a systematic analysis for the Global Burden of Disease Study 2019
- A meta‐analysis of anal cancer incidence by risk group: Toward a unified anal cancer risk scale
- Global fertility in 204 countries and territories, 1950–2021, with forecasts to 2100: a comprehensive demographic analysis for the Global Burden of Disease Study 2021
- Exercise interventions in Alzheimer's disease: A systematic review and meta-analysis of randomized controlled trials
- Prognostic Significance of Carbonic Anhydrase IX Expression in Cancer Patients: A Meta-Analysis
- Glucocorticoid Resistance: Is It a Requisite for Increased Cytokine Production in Depression? A Systematic Review and Meta-Analysis
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.