alexa Treatment for salivary gland hypofunction at both initial and advanced stages of Sjögren-like disease: a comparative study of bone marrow therapy versus spleen cell therapy with a 1-year monitoring period.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Stem Cell Research & Therapy

Author(s): Khalili S, Faustman DL, Liu Y, Sumita Y, Blank D,

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Abstract BACKGROUND AIMS: Non-obese diabetic mice (NOD) exhibit autoimmune Sjögren-like disease (SS-like). We reported previously that a combined-therapy consisting of immuno- and cell-based therapy rescued NOD from SS-like. However, therapies tested to date on NOD mice were aimed at the initial phase of SS-like. It is unknown whether therapies are effective in restoring salivary function when given at an advanced phase of SS-like. METHODS: The efficacy of two therapies (bone marrow versus spleen cells) was compared head-to-head for halting/reversing salivary hypofunction at two critical time points of SS-like (7-week-old NOD with normal saliva output and 20-week-old NOD with minimal saliva). NOD mice were divided into four groups: (i) control, (ii) complete Freund's adjuvant (CFA), (iii) bone marrow transplants with CFA or (iv) spleen cell transplants with CFA. Mice were monitored 8-12 months after therapy. RESULTS: Both cell therapies were effective during the initial phase of SS-like; salivary flow rates were maintained between 80-100\% of pre-symptomatic levels. Spleen cell therapy was better than bone marrow when administered in the initial phase of SS-like. When cell therapies were given at an advanced phase of SS-like (20 weeks and older), salivary flow rates improved but were at best 50\% of pre-symptomatic levels. Both cell therapies decreased tumor necrosis factor-α, transforming growth factor-β1 levels and T and B cells while increasing epidermal growth factor and regulatory T cells. Elevated serum epidermal growth factor levels were measured in spleen-treated mice. CONCLUSIONS: A therapeutic effect in advanced phase disease, albeit in mice, holds promise for humans in which Sjögren syndrome is generally not diagnosed until a late stage. Copyright © 2014 International Society for Cellular Therapy. Published by Elsevier Inc. All rights reserved. This article was published in Cytotherapy and referenced in Journal of Stem Cell Research & Therapy

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