Long term maintenance of lymphocytes in vitro

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...

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435 41, 4352401, 4352402, 43524025, 4352403, 43524031, C12N 500, C12N 508, C12Q 104

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056889151

ABSTRACT:
Long term culture of resting T lymphocytes. The present invention provides methods and compositions for maintaining resting, mature T lymphocytes (cells) for long term in the absence of mitogens, antigens, or stimulatory cytokines, in which the T cells maintaining their ability to respond to nitrogens and allogenic cells. T cells cultured under such conditions can be used as target cells for retroviral vector-mediated gene transfer and implemented in certain gene therapy applications. The culturing conditions described herein allow for the continuous availability of T lymphocytes for various pharmacological, diagnostic, gene therapy, and experimental purposes, and can be utilized for any application requiring non-stimulated T lymphocytes. In specific examples, umbilical cord blood and peripheral blood T lymphocytes and endothelial-like adherent monocytes are cultured in DMEM, 2% 2-mercaptoethanol containing either 20% horse serum, or RPMI 2% 2-ME containing 10% fetal calf serum supplemented with basic fibroblast growth factor for up to three months.

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