PMID- 15606547 OWN - NLM STAT- MEDLINE DCOM- 20050304 LR - 20081121 IS - 0007-1048 (Print) IS - 0007-1048 (Linking) VI - 128 IP - 1 DP - 2005 Jan TI - Increased interferon gamma production by peripheral blood mononuclear cells in response to stimulation of overexpressed disease-specific 9-O-acetylated sialoglycoconjugates in children suffering from acute lymphoblastic leukaemia. PG - 35-41 AB - Disease-specific over-expression of 9-O-acetylated sialoglycoconjugates (9-O-AcSGs) on peripheral blood mononuclear cells (PBMC) of children with acute lymphoblastic leukaemia (ALL, PBMC(ALL)) has been demonstrated using a lectin, Achatinin-H, with specificity towards 9-O-AcSAalpha2-6GalNAc. This study investigated the contributory role of 9-O-AcSGs induced on PBMC(ALL). Stimulation of PBMC(ALL) with Achatinin-H through 9-O-AcSGs led to a lymphoproliferative response with a significantly increased interferon-gamma (IFN-gamma) production when compared with unstimulated cells as demonstrated by enzyme-linked immunosorbent assay and mRNA expression. Under identical conditions, PBMC(ALL) ablated of O-acetylations did not respond to such stimulation. In summary, it may be concluded that stimulation of over-expressed 9-O-AcSGs regulate signalling for proliferation, leading to the release of IFN-gamma. Controlled expression of these molecules may be exploited as potential targets for therapy, promising beneficial effects to children with ALL. FAU - Ghosh, Shyamasree AU - Ghosh S AD - Immunobiology Division, Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Kolkata, India. FAU - Bandyopadhyay, Suman AU - Bandyopadhyay S FAU - Pal, Santanu AU - Pal S FAU - Das, Benubrata AU - Das B FAU - Bhattacharya, Dilip K AU - Bhattacharya DK FAU - Mandal, Chitra AU - Mandal C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Br J Haematol JT - British journal of haematology JID - 0372544 RN - 0 (Glycoconjugates) RN - 0 (Lectins) RN - 0 (RNA, Messenger) RN - 0 (Sialic Acids) RN - 0 (achatinin(H)) RN - 55717-54-9 (9-O-acetyl-N-acetylneuraminic acid) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Adolescent MH - Cell Proliferation MH - Child MH - Child, Preschool MH - Enzyme-Linked Immunosorbent Assay/methods MH - Female MH - Flow Cytometry MH - Glycoconjugates/genetics/*metabolism MH - Humans MH - Infant MH - Interferon-gamma/*immunology MH - Lectins/metabolism MH - Leukocytes, Mononuclear/*chemistry/immunology MH - Male MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/genetics/*immunology MH - RNA, Messenger/analysis MH - Reverse Transcriptase Polymerase Chain Reaction MH - Sialic Acids/genetics/*metabolism MH - Signal Transduction/physiology MH - Stimulation, Chemical EDAT- 2004/12/21 09:00 MHDA- 2005/03/05 09:00 CRDT- 2004/12/21 09:00 PHST- 2004/12/21 09:00 [pubmed] PHST- 2005/03/05 09:00 [medline] PHST- 2004/12/21 09:00 [entrez] AID - BJH5256 [pii] AID - 10.1111/j.1365-2141.2004.05256.x [doi] PST - ppublish SO - Br J Haematol. 2005 Jan;128(1):35-41. doi: 10.1111/j.1365-2141.2004.05256.x.