Abstract:
:In the present study, we analyzed the proliferation and cytotoxic activities of LAK cells and initial phase TILs by stimulation with IL-4. IL-4 obviously inhibited the DNA synthesis of LAK cells and initial phase TILs at the concentration of 250 pg/ml and 25 pg/ml, respectively. Furthermore, IL-4 (25 ng/ml for LAK cells, 25 pg/ml for initial phase TILs) suppressed the cytotoxic activities against K562, KATO-III, and autologous tumor cells. The discrepancy of the concentration between the proliferation and the cytotoxicicity by IL-4 suggested different pathways in terms of the generation of LAK cells. In order to clarify the inhibitory mechanism of IL-4, we measured the expression of IL-2 receptor. IL-2 receptor alpha chain was strongly down-regulated by IL-4. Thus, IL-4 modulates the activation of LAK cells and initial phase TILs via the IL-2 receptor alpha chain.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Tsunoda T,Tanimura H,Yamaue H,Iwahashi M,Tani M,Tamai M,Noguchi K,Mizobata S,Arii Kdoi
10.3892/ijo.7.5.1117subject
Has Abstractpub_date
1995-11-01 00:00:00pages
1117-21issue
5eissn
1019-6439issn
1791-2423journal_volume
7pub_type
杂志文章abstract::Colorectal cancer (CRC) treatment primarily relies on chemotherapy along with surgery, radiotherapy and, more recently, targeted therapy at the late stages. However, chemotherapeutic drugs have high cytotoxicity, and the similarity between the effects of these drugs on cancerous and healthy cells limits their wider us...
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