Document Detail

Mononuclear cells release low molecular weight factors with anti-cancer activity: A lower level of production by cells of cancer patients.
MedLine Citation:
PMID:  9499456     Owner:  NLM     Status:  MEDLINE    
Following the clinical observations that tumor metastases are extremely rare in striated muscles we defined recently a low molecular weight factor which is released by muscle cells (muscle factor, MF) and possesses specific anti-proliferative activity against tumor cells. we demonstrate that peripheral blood mononuclear cells constitutively release low molecular weight factor (LMF) similar to the MF which is capable of inhibiting in vitro the proliferation of carcinoma, melanoma, leukemia and lymphoma cell lines. The proliferation of normal cells such as bone marrow or fibroblasts was not inhibited but slightly stimulated following incubation with the LMF. Biochemical purification of this factor by several HPLC steps revealed that the inhibitory activity against tumor cells was concentrated within two definitive peaks. The LMF affects tumor cell growth by arresting them in the G0/G1 of the cell cycle and its activity is species and tumor non-specific. In vivo studies in melanoma- bearing mice revealed that the LMF inhibited melanoma growth when given either intraperitoneally or orally. Mononuclear cells from cancer patients with different malignancies (non-Hodgkin lymphoma, malignant melanoma, colon carcinoma and carcinoma of the rectum) secreted lower level of LMF in comparison to healthy subjects. The capability of the LMF to inhibit tumor cell growth and promote normal cell proliferation combined with its bioavailability in vivo may lead to its potential therapeutic and diagnostic use.
D Cohen-Aloro; O Merimsky; S Bar-Yehuda; B Klein; S Kayzer; P Fishman
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of oncology     Volume:  12     ISSN:  1019-6439     ISO Abbreviation:  Int. J. Oncol.     Publication Date:  1998 Apr 
Date Detail:
Created Date:  1998-04-23     Completed Date:  1998-04-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9306042     Medline TA:  Int J Oncol     Country:  GREECE    
Other Details:
Languages:  eng     Pagination:  921-5     Citation Subset:  IM    
Laboratory of Clinical and Tumor Immunology, The Felsenstein Medical Research Center, Tel-Aviv University, Rabin Medical Center, Petach-Tikva, Israel.
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MeSH Terms
Antineoplastic Agents / metabolism*,  pharmacology
Cell Cycle / drug effects
Leukocytes, Mononuclear / metabolism*
Mice, Inbred C57BL
Molecular Weight
Neoplasms / blood*
Tumor Cells, Cultured
Reg. No./Substance:
0/Antineoplastic Agents

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