Abstract:
:The effect of immune cells on the growth and development of human prostatic cancer cells was investigated. Cell proliferation of androgen-independent human prostatic cancer cells JCA-1 was reduced 30-40% with the supplementation of a growth modulating activity present in lymphocyte conditioned medium. The slower growing cells had a longer doubling time revealing a blocking for G(1) cells entering into S phase. The clonogenicity of the cells was also reduced. Displayed in parallel was altered phenotypes including the development of dendrite-like processes with less intercellular contact. Immunocytochemical staining showed significantly increased: expression of actin, vimentin and cytokeratin 8, suggesting a differentiated cell type. Activated lymphocytes were shown to require RNA synthesis for providing the modulating activity which was estimated to be 18,500-27,500 Da. The role of immune cells in growth regulation of prostatic cells is discussed.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Hsieh T,Xu W,Tang S,Chiao Jdoi
10.3892/ijo.5.4.979subject
Has Abstractpub_date
1994-10-01 00:00:00pages
979-84issue
4eissn
1019-6439issn
1791-2423journal_volume
5pub_type
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