PMID- 11755467 OWN - NLM STAT- MEDLINE DCOM- 20020327 LR - 20201208 IS - 0145-2126 (Print) IS - 0145-2126 (Linking) VI - 26 IP - 2 DP - 2002 Feb TI - Interferon-alpha 2b and vesnarinone influence levels of tumor necrosis factor-alpha, apoptosis, or interleukin 6 in ESKOL, a hairy cell leukemic cell line. A potential cytokine and oncogene relationship regulating apoptosis is suggested. PG - 169-77 AB - The in vitro effects of interferon-alpha (IFN) on levels of secreted interleukin 6 (IL-6), tumor necrosis factor-alpha (TNF alpha), and nuclear matrix proteins (NMP) were examined in ESKOL, a B-lymphoblastoid cell line resembling hairy cell leukemia (HCL). IFN enhances differentiation in ESKOL, decreases TNF alpha levels, decreases apoptosis, increases IL-6 levels, and down regulates the expression of several oncogenes. Vesnarinone (Ves), a TNF alpha repressor, lowers TNF-alpha and decreases apoptosis in the same cell line. ESKOL exhibits enhanced apoptosis and reduced B-cell lymphomas (Bcl-2) levels over WIL-2. IL-6 and TNFalpha have been shown to decrease and increase apoptosis in B-cells respectively; however, treatment of ESKOL with these cytokines had no significant effect on apoptosis. We suggest that IFN decreases apoptosis by mechanisms involving enhanced IL-6 and Bcl-2 levels, decreased TNF alpha and the down regulation of apoptotic oncogenes, including c-myc. FAU - Khalaf, Waleed AU - Khalaf W AD - Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46222, USA. FAU - Maina, Caroline AU - Maina C FAU - Byers, Joseph AU - Byers J FAU - Harvey, William AU - Harvey W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Leuk Res JT - Leukemia research JID - 7706787 RN - 0 (Antigens, Nuclear) RN - 0 (Antineoplastic Agents) RN - 0 (Interferon alpha-2) RN - 0 (Interferon-alpha) RN - 0 (Interleukin-6) RN - 0 (Nuclear Proteins) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (Pyrazines) RN - 0 (Quinolines) RN - 0 (Recombinant Proteins) RN - 0 (Tumor Necrosis Factor-alpha) RN - 5COW40EV8M (vesnarinone) SB - IM CIN - Leuk Res. 2002 Apr;26(4):407-8. PMID: 11839386 MH - Antigens, Nuclear MH - Antineoplastic Agents/*pharmacology MH - Apoptosis/*drug effects/genetics MH - Gene Expression Regulation, Leukemic/*drug effects MH - Genes, bcl-2 MH - Humans MH - Interferon alpha-2 MH - Interferon-alpha/*pharmacology MH - Interleukin-6/*biosynthesis/metabolism MH - Leukemia, Hairy Cell/genetics/metabolism/*pathology MH - Nuclear Proteins/biosynthesis/genetics MH - Oncogenes MH - Proto-Oncogene Proteins c-bcl-2/biosynthesis MH - Pyrazines MH - Quinolines/*pharmacology MH - Recombinant Proteins MH - Tumor Cells, Cultured/drug effects/metabolism MH - Tumor Necrosis Factor-alpha/*biosynthesis/metabolism EDAT- 2002/01/05 10:00 MHDA- 2002/03/28 10:01 CRDT- 2002/01/05 10:00 PHST- 2002/01/05 10:00 [pubmed] PHST- 2002/03/28 10:01 [medline] PHST- 2002/01/05 10:00 [entrez] AID - S014521260100100X [pii] AID - 10.1016/s0145-2126(01)00100-x [doi] PST - ppublish SO - Leuk Res. 2002 Feb;26(2):169-77. doi: 10.1016/s0145-2126(01)00100-x.