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    Thumbs up Hair regrowth in alopecia areata patients following Stem Cell Educator therapy

    Hair regrowth in alopecia areata patients following Stem Cell Educator therapy
    Yanjia Li1, Baoyong Yan2, Hepeng Wang1, Heng Li3, Quanhai Li2, Dong Zhao4, Yana Chen5, Ye Zhang6, Wenxia Li6, Jun Zhang2, Shanfeng Wang6, Jie Shen6, Yunxiang Li6, Edward Guindi7 and Yong Zhao68*

    * Corresponding author: Yong Zhao yzhao@hackensackUMC.org

    BMC Medicine 2015, 13:87 doi:10.1186/s12916-015-0331-6

    Published: 20 April 2015
    Abstract (provisional)
    Background Alopecia areata (AA) is one of the most common autoimmune diseases and targets the hair follicles, with high impact on the quality of life and self-esteem of patients due to hair loss. Clinical management and outcomes are challenged by current limited immunosuppressive and immunomodulating regimens. Methods We have developed a Stem Cell Educator therapy in which a patient’s blood is circulated through a closed-loop system that separates mononuclear cells from the whole blood, allows the cells to briefly interact with adherent human cord blood-derived multipotent stem cells (CB-SC), and returns the “educated” autologous cells to the patient’s circulation. In an open-label, phase 1/phase 2 study, patients (N = 9) with severe AA received one treatment with the Stem Cell Educator therapy. The median age was 20 years (median alopecic duration, 5 years). Results Clinical data demonstrated that patients with severe AA achieved improved hair regrowth and quality of life after receiving Stem Cell Educator therapy. Flow cytometry revealed the up-regulation of Th2 cytokines and restoration of balancing Th1/Th2/Th3 cytokine production in the peripheral blood of AA subjects. Immunohistochemistry indicated the formation of a “ring of transforming growth factor beta 1 (TGF-β1)” around the hair follicles, leading to the restoration of immune privilege of hair follicles and the protection of newly generated hair follicles against autoimmune destruction. Mechanistic studies revealed that co-culture with CB-SC may up-regulate the expression of coinhibitory molecules B and T lymphocyte attenuator (BTLA) and programmed death-1 receptor (PD-1) on CD8β+NKG2D+ effector T cells and suppress their proliferation via herpesvirus entry mediator (HVEM) ligands and programmed death-1 ligand (PD-L1) on CB-SCs. Conclusions Current clinical data demonstrated the safety and efficacy of the Stem Cell Educator therapy for the treatment of AA. This innovative approach produced lasting improvement in hair regrowth in subjects with moderate or severe AA. Trial registration ClinicalTrials.gov, NCT01673789, 21 August 2012

    http://www.biomedcentral.com/content...015-0331-6.pdf

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