Linked Life Data

16699375

Source:http://linkedlifedata.com/resource/pubmed/id/16699375

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2006-5-15
pubmed:abstractText
Natural killer T (NKT) cells are involved in the function of innate immune systems and also play an important role in regulating acquired immune responses. In previous reports, we showed that Valpha24+ NKT cells proliferated more efficiently from granulocyte-colony stimulating factor (G-CSF)-mobilized peripheral blood mononuclear cells (PBMC) than from non-mobilized PBMC. However, the mechanism of this enhanced NKT cell expansion is not yet clear. The goal of this research was to develop culture conditions for the more efficient ex vivo expansion of NKT cells. G-CSF-mobilized PBMC was cultured in AIM-V medium supplemented with 10% auto-plasma, 100 ng/mL alpha-galactosylceramide (alpha-GalCer) and 100 IU/mL recombinant human (rh) interleukin (IL)-2. The efficiency of the expansion of Valpha24+ NKT cells was evaluated on day 12. The expansion-fold of Valpha24+ NKT cells was augmented depending on the proportion of CD14+ cells at the beginning of culture. The depletion of Valpha24+ NKT cells abrogated the expansion of Valpha24+ NKT cells. Depletion of CD56+ NK cells from mobilized PBMC enhanced, and add-back of purified CD56+ NK cells suppressed the expansion of Valpha24+ NKT cells. Experiments with different timings for the addition of cells, IL-2 and alpha-GalCer suggested that follow-up supplementation with IL-2 or CD14+ cells should be avoided for the efficient expansion of Valpha24+ NKT cells. These results should be useful for the development of an efficient and practical expansion protocol for adoptive immunotherapy with Valpha24+ NKT cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1524-9557
pubmed:author
pubmed:issnType
Print
pubmed:volume
29
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
320-7
pubmed:dateRevised
2008-3-18
pubmed:meshHeading
pubmed:articleTitle
Efficient ex vivo expansion of Valpha24+ NKT cells derived from G-CSF-mobilized blood cells.
pubmed:affiliation
Pharmacology Division, National Cancer Center Research Institute, Tokyo, Japan.
pubmed:publicationType
Journal Article, In Vitro, Research Support, Non-U.S. Gov't