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Progress on Methods of T Lymphocyte Development

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Abstract

T lymphocytes (T cells) play an important role in adoptive cellular immunotherapy (ACT). T cells can be stably derived and easily obtained by various methods of T cell development , which have more advantages than traditional methods of T cells isolated from autologous or allogeneic tissues. At present, there are mainly three methods for T cell development : fetal thymus organ culture, recombinant thymus organ culture and two-dimensional culture driven by Notch signal. Fetal thymus organ culture is easy to operate, the isolated thymus can support T cell differentiation and development to maturity , but the intact thymus has problems of limited maintenance time and difficulty in cell harvesting. In recombinant thymic organ culture, various thymic stromal cells are dispersed and recombined to construct a three-dimensional culture environment, which can support T cell maturation and ; however, biomaterials and three-dimensional environment may lead to limited culture maintenance time and cell yield. Two-dimensional culture method uses artificial presentation of Notch signaling pathway ligands to drive T cell differentiation and development; the culture architecture is simple and stable, but it can only support T cell development to the early immature stage. This article reviews the research progress of various culture methods of T cell development , and discusses the existing problems and the future development to facilitate the application of ACT.

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