Human adipose tissue-derived mesenchymal stromal cells promote B-cell motility and chemoattraction.
Cytotherapy 2014;
16:1692-9. [PMID:
25240680 DOI:
10.1016/j.jcyt.2014.07.012]
[Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 07/03/2014] [Accepted: 07/31/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND AIMS
Mesenchymal stromal cells hold special interest for cell-based therapy because of their tissue-regenerative and immunosuppressive abilities. B-cell involvement in chronic inflammatory and autoimmune pathologies makes them a desirable target for cell-based therapy. Mesenchymal stromal cells are able to regulate B-cell function; although the mechanisms are little known, they imply cell-to-cell contact.
METHODS
We studied the ability of human adipose tissue-derived mesenchymal stromal cells (ASCs) to attract B cells.
RESULTS
We show that ASCs promote B-cell migration through the secretion of chemotactic factors. Inflammatory/innate signals do not modify ASC capacity to mediate B-cell motility and chemotaxis. Analysis of a panel of B cell-related chemokines showed that none of them appeared to be responsible for B-cell motility. Other ASC-secreted factors able to promote cell motility and chemotaxis, such as the cytokine interleukin-8 and prostaglandin E2, did not appear to be implicated.
CONCLUSIONS
We propose that ASC promotion of B-cell migration by undefined secreted factors is crucial for ASC regulation of B-cell responses.
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