JOURNAL ARTICLE

Ex vivo expansion of regulatory T cell and T helper 2 cells using a hematosphere culture

Dong Hwan Kim, Parkyong Song, Jung-Hwa Han, Jin Hur
Immunobiology 2020 February 22, : 151918
32111416
Regulatory T cells (T-reg) are important components of immune system required to understand the mechanistic details of cancer immunity and autoimmune diseases. However, reliable and efficient methods of regulatory T cell expansion have not been established yet. Here, we show that a human peripheral blood mononuclear cell (PBMNC) derived blood-born hematosphere (BBHS) culture without cytokine treatment increased T-reg and T helper 2 cell (Th2) populations in the cell suspension. We found that the isolated cells suspended around the hematospheres expressed T helper cell markers. Importantly, the Foxp3+/CD25+ T-reg and IL-4+/CD25+ Th2 cell populations in the cell suspension were greatly expanded during hematosphere culture. Through ELISA analysis of the supernatant, we showed that secretion of Th2-related cytokines such as IL-5, IL-10, and IL-13 also increased. Taken together, hematosphere culture is a good method for ex vivo expansion of T-reg and Th2, which can provide therapeutic benefits for the treatment of immune disorders.

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