Chapter title |
Natural Killer Cells
|
---|---|
Chapter number | 14 |
Book title |
Natural Killer Cells
|
Published in |
Methods in molecular biology, January 2016
|
DOI | 10.1007/978-1-4939-3684-7_14 |
Pubmed ID | |
Book ISBNs |
978-1-4939-3682-3, 978-1-4939-3684-7
|
Authors |
Phan, Minh-Trang Thi, Lee, Seung-Hwan, Kim, Sang-Ki, Cho, Duck, Minh-Trang Thi Phan, Seung-Hwan Lee, Sang-Ki Kim D.V.M., Ph.D., Duck Cho M.D., Ph.D., Sang-Ki Kim, Duck Cho |
Editors |
Srinivas S. Somanchi |
Abstract |
Natural killer (NK) cells can be expanded upon activation by proliferative cytokines (such as IL-2 and IL-15). The NK cell expansion can be greatly enhanced by proteins from feeder cells such as tumor cell lines or PBMCs. Therefore, coculture systems of irradiated feeder cells and NK cells in media containing IL-2 and IL-15 have been developed to generate large numbers of NK cells, although NK cell expansion protocol using anti-CD3 antibody (OKT-3) without feeder cells has also been developed. Commonly used feeder cell lines are RPMI8866, Epstein-Barr lymphoblastoid cell line (EBV-LCL), and K562. Stimulation with NK-sensitive K562 cells is known to augment NK cell proliferation to IL-2, IL-15, and IL-21 in combination.Recently, remarkable NK cell-expansion rates are achieved when genetically engineered (GE) feeder cells are used. Dr. Dario Campana's group found that membrane-bound IL-15 and 4-1BBL, coexpressed by K562 cells, acted synergistically to augment K562-specific NK stimulatory capacity, resulting in vigorous expansion of peripheral blood CD56(+) CD3(-) NK cells without concomitant growth of T lymphocytes. Here, we describe an in vitro expansion method of human NK cells among PBMCs by coculturing with GE_K562 cells. |
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