Extrathymic generation of tumor-specific T cells from genetically engineered human hematopoietic stem cells via Notch signaling.
Adoptive cell transfer (ACT) of tumor-reactive lymphocytes has been shown to be an effective treatment for cancer patients. Studies in murine models of ACT indicated that antitumor efficacy of adoptively transferred T cells is dependent on the differentiation status of the cells, with lymphocyte differentiation inversely correlated with in vivo antitumor effectiveness. T-cell in vitro development technologies provide a new opportunity to generate naive T cells for the purpose of ACT. In this study, we genetically modified human umbilical cord blood-derived hematopoietic stem cells (HSCs) to express tumor antigen-specific T-cell receptor (TCR) genes and generated T lymphocytes by coculture with a murine cell line expressing Notch-1 ligand, Delta-like-1 (OP9-DL1). Input HSCs were differentiated into T cells as evidenced by the expression of T-cell markers, such as CD7, CD1a, CD4, CD8, and CD3, and by detection of TCR excision circles. We found that such in vitro differentiated T cells expressed the TCR and showed HLA-A2-restricted, specific recognition and killing of tumor antigen peptide-pulsed antigen-presenting cells but manifested additional natural killer cell-like killing of tumor cell lines. The genetic manipulation of HSCs has broad implications for ACT of cancer.
Zhao
Yangbing
Y
Surgery Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland 20892-1201, USA.
Parkhurst
Maria R
MR
Zheng
Zhili
Z
Cohen
Cyrille J
CJ
Riley
John P
JP
Gattinoni
Luca
L
Restifo
Nicholas P
NP
Rosenberg
Steven A
SA
Morgan
Richard A
RA
D000818:Animals; D002454:Cell Differentiation / Q000235:genetics / Q000276:immunology; D045744:Cell Line, Tumor; D018920:Coculture Techniques; D000939:Epitopes; D005312:Fetal Blood / Q000166:cytology / Q000276:immunology; D005818:Genetic Engineering / Q000379:methods; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000276:immunology*; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins / Q000235:genetics / Q000276:immunology / Q000378:metabolism; D007694:Killer Cells, Natural / Q000276:immunology; D008565:Membrane Proteins / Q000096:biosynthesis / Q000235:genetics / Q000276:immunology / Q000378:metabolism; D051379:Mice; D051881:Receptor, Notch1 / Q000235:genetics / Q000276:immunology* / Q000378:metabolism; D011948:Receptors, Antigen, T-Cell / Q000096:biosynthesis / Q000235:genetics / Q000276:immunology*; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology*; D014161:Transduction, Genetic
C511877:Dll3 protein, mouse; D000939:Epitopes; D047908:Intracellular Signaling Peptides and Proteins; D008565:Membrane Proteins; D051881:Receptor, Notch1; D011948:Receptors, Antigen, T-Cell