Interleukin-2 activation of chemotherapy and growth factor-mobilized peripheral blood stem cells for generation of cytotoxic effectors

U. N. Verma, E. Areman, S. A. Dickerson, P. L. Kotula, R. Sacher, A. Mazumder

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Based on our previous studies demonstrating marked anti-tumor activity of interleukin-2 (IL-2)-activated bone marrow in vitro and in vivo. We studied the generation of anti-tumor cytotoxic effecters from chemotherapy- and growth factor-mobilized PBSC from 12 patients with different solid tumors. As chemotherapy and growth factor priming could lead to important qualitative and quantitative alterations of lymphoid cells, we also looked at the distribution of lymphoid cells contained in primed PBSC. In addition, different variables were defined for successful application of the technique to clinical protocols. The cells were placed in culture at varying cell densities in either serum-containing or serum-free culture medium, supplemented with IL-2, 100 or 1000 Cetus units/ml at 37°C for 24 or 72 h, in flasks or in culture bags. Anti-tumor cytotoxicity was tested against A375 (melanoma), K562 (CML) and Daudi (Burkitt's lymphoma) cell lines in standard 4 h 51Cr release assay, Marked cytotoxicity was seen against all cell lines tested (A375: 32.7% ± 5.2; K562: 52.8% ± 4.8; Daudi: 50.5% ± 7.2). Cytotoxicity was comparable in serum-containing and serum-free culture conditions and in tissue culture flasks and bags. Cell density up to 10 x 106/ml was not associated with any significant decline in cytotoxicity, IL-2 activation of PBSC after thawing led to the generation of cytotoxicity comparable to that obtained with fresh PBSC. On flow cytometric analysis, the proportion of CD8+ T cells and NK cells (CD56+) was found to be higher in primed PBSC than in control peripheral blood mononuclear cells. In addition a significant proportion of T cells was positive for activation markers such as CD25 and HLA DR and a further increase was noted in the proportion of cells with these markers after IL-2 activation.

Original languageEnglish (US)
Pages (from-to)199-206
Number of pages8
JournalBone Marrow Transplantation
Volume15
Issue number2
StatePublished - 1995

Fingerprint

Interleukin-2
Intercellular Signaling Peptides and Proteins
Drug Therapy
Neoplasms
Cell Count
Serum
Lymphocytes
T-Lymphocytes
Cell Line
Burkitt Lymphoma
Serum-Free Culture Media
HLA-DR Antigens
Clinical Protocols
Natural Killer Cells
Melanoma
Blood Cells
Bone Marrow
Peripheral Blood Stem Cells

Keywords

  • Anti-tumor
  • Cytotoxic effectors
  • Generation

ASJC Scopus subject areas

  • Hematology
  • Transplantation

Cite this

Interleukin-2 activation of chemotherapy and growth factor-mobilized peripheral blood stem cells for generation of cytotoxic effectors. / Verma, U. N.; Areman, E.; Dickerson, S. A.; Kotula, P. L.; Sacher, R.; Mazumder, A.

In: Bone Marrow Transplantation, Vol. 15, No. 2, 1995, p. 199-206.

Research output: Contribution to journalArticle

Verma, U. N. ; Areman, E. ; Dickerson, S. A. ; Kotula, P. L. ; Sacher, R. ; Mazumder, A. / Interleukin-2 activation of chemotherapy and growth factor-mobilized peripheral blood stem cells for generation of cytotoxic effectors. In: Bone Marrow Transplantation. 1995 ; Vol. 15, No. 2. pp. 199-206.
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