PMID- 26085003 OWN - NLM STAT- MEDLINE DCOM- 20160511 LR - 20181202 IS - 1945-8932 (Electronic) IS - 1945-8932 (Linking) VI - 29 IP - 4 DP - 2015 Jul-Aug TI - Immunomodulatory effect of tonsil-derived mesenchymal stem cells in a mouse model of allergic rhinitis. PG - 262-7 LID - 10.2500/ajra.2015.29.4216 [doi] AB - BACKGROUND: Although several studies have claimed that mesenchymal stem cells (MSC) derived from human tissues can ameliorate allergic airway inflammation, the immunomodulatory mechanism of MSCs remains unclear. OBJECTIVE: We aimed to determine the effects and the underlying mechanism of tonsil-derived MSCs (T-MSC) on allergic inflammation compared with adipose tissue-derived stem cells (ASC) in a mouse model of allergic rhinitis (AR). METHODS: MSCs were isolated from human palatine tonsil (T-MSC) and the surface markers were analyzed. The effect of T-MSCs was evaluated in 24 BALB/c mice that were randomly divided into four groups (negative control group, positive control group, T-MSC group, and ASC group). MSCs were administered intravenously to ovalbumin (OVA) sensitized mice (T-MSC and ASC groups) on days 18 to 23, and subsequent OVA challenge was conducted daily from days 24 to 28. Several parameters of allergic inflammation were assessed. RESULTS: T-MSC and ASC had similar characteristics in surface markers. Intravenous injection of T-MSC significantly reduced allergic symptoms, eosinophil infiltration, serum total, and OVA-specific immunoglobulin E (IgE), and the nasal and systemic T-helper (Th) 2 cytokine profile. Further analysis revealed that nasal innate cytokines, such as interleukin (IL) 25 and IL-33, and chemokines, such as CCL11, CCL24, induction was suppressed in T-MSCs injected groups, which explained their underlying mechanism. In addition, the T-MSC group had more inhibition of allergic inflammation than did the ASC group, which might be attributed to the more proliferative activity of T-MSC. CONCLUSION: Administration of T-MSC effectively reduced allergic symptoms and inflammatory parameters in the mouse model of AR. T-MSC treatment reduced Th2 cytokines and OVA-specific IgE secretion from B cells. In addition, innate cytokine (IL-25 and IL-33) expression and eotaxin messenger RNA expression was inhibited in the nasal mucosa, which is suggestive of the mechanism of reduced allergic inflammation. Therefore, T-MSC treatment is potentially an alternative therapeutic modality in AR. FAU - Samivel, Ramachandran AU - Samivel R AD - Department of Otorhinolaryngology, Dankook University College of Medicine, Cheonan, Korea. FAU - Kim, Eun Hee AU - Kim EH FAU - Chung, Young-Jun AU - Chung YJ FAU - Mo, Ji-Hun AU - Mo JH LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150616 PL - United States TA - Am J Rhinol Allergy JT - American journal of rhinology & allergy JID - 101490775 SB - IM MH - Adipose Tissue/immunology MH - Animals MH - Disease Models, Animal MH - Humans MH - *Immunomodulation MH - Mesenchymal Stem Cell Transplantation/*methods MH - Mesenchymal Stem Cells/*immunology MH - Mice MH - Mice, Inbred BALB C MH - Nasal Mucosa MH - Palatine Tonsil/immunology MH - Random Allocation MH - Rhinitis, Allergic/immunology/*surgery MH - Treatment Outcome EDAT- 2015/06/19 06:00 MHDA- 2016/05/12 06:00 CRDT- 2015/06/19 06:00 PHST- 2015/06/19 06:00 [entrez] PHST- 2015/06/19 06:00 [pubmed] PHST- 2016/05/12 06:00 [medline] AID - content-4216 [pii] AID - 10.2500/ajra.2015.29.4216 [doi] PST - ppublish SO - Am J Rhinol Allergy. 2015 Jul-Aug;29(4):262-7. doi: 10.2500/ajra.2015.29.4216. Epub 2015 Jun 16.