PMID- 21145044 OWN - NLM STAT- MEDLINE DCOM- 20110207 LR - 20161125 IS - 1090-2163 (Electronic) IS - 0008-8749 (Linking) VI - 267 IP - 1 DP - 2011 TI - Induction of immunostimulatory cytokine genes expression in human PBMCs by a novel semiquinone glucoside derivative (SQGD) isolated from a Bacillus sp. INM-1. PG - 67-75 LID - 10.1016/j.cellimm.2010.11.005 [doi] AB - In the present study, a semiquinone glucoside derivative (SQGD) isolated from a radioresistant bacterium Bacillus sp. INM-1 was evaluated for its immunostimulatory activities. Human peripheral blood mononuclear cells (PBMCs) were stimulated by different doses (30-90 microg/ml) of SQGD for different time (3-12h) intervals at 37 degrees C, and IL-12p40, IL-23p19, IL-10, RelA and c-Jun gene expression analysis was carried out by qRT-PCR method. SQGD dose dependent cytokines protein expression kinetic analysis was carried out using western blotting. As the results of SQGD (30mug/ml) stimulation for 3h at 37 degrees C, significant induction in IL-12p40, IL-23p19 and RelA gene expression was observed in PBMCs compared to unstimulated control cells. However, no such induction in IL-10 and c-Jun gene expression was observed. Time dependent protein expression study indicated significant increase in IL-12p40, IL-12p35, IL-23p19 and RelA protein expression at 3-6h, which was found decrease at 12h upon SQGD treatment. In contrast, IL-10 protein expression was found to enhance significantly at 12h after SQGD treatment to the PBMCs. SQGD dose dependent study showed approximately similar level of induction in IL-12p40, IL-12p35, IL-23p19 and RelA proteins expression at all tested concentration (30-90 microg/ml) compared to control. However, no significant change in the IL-10 and c-Jun protein expression was observed at any SQGD concentration. SQGD treatment (0.25mg/kgbwt.) was also found to enhance anti-keyhole Limpet Hemocynin (KLH) IgM antibodies significantly in the mice immunized by KLH. Thus, SQGD fraction stimulates cellular immunity by inducing immunostimulatory cytokines and humoral immunity by enhancing IgM antibodies and could be a promising immunostimulant. Further studies related to molecular mechanisms offering immunostimulation is underway, will certainly helpful to unravel its mode of action in the biological system. CI - 2010 Elsevier Inc. All rights reserved. FAU - Kumar, Raj AU - Kumar R AD - Institute of Nuclear Medicine and Allied Sciences, Delhi, India. rajkumar790@yahoo.com FAU - Sharma, Rakesh Kumar AU - Sharma RK FAU - Bansal, Deen Dayal AU - Bansal DD FAU - Patel, Dev Dutt AU - Patel DD FAU - Mishra, Saurabh AU - Mishra S FAU - Miteva, Lyuba AU - Miteva L FAU - Dobreva, Zlatka AU - Dobreva Z FAU - Gadjeva, Veselina AU - Gadjeva V FAU - Stanilova, Spaska AU - Stanilova S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101119 PL - Netherlands TA - Cell Immunol JT - Cellular immunology JID - 1246405 RN - 0 (Benzoquinones) RN - 0 (Cytokines) RN - 0 (Glucosides) RN - 0 (IL23A protein, human) RN - 0 (Interleukin-12 Subunit p35) RN - 0 (Interleukin-12 Subunit p40) RN - 0 (Interleukin-23 Subunit p19) RN - 0 (RELA protein, human) RN - 0 (Transcription Factor RelA) RN - 3T006GV98U (quinone) SB - IM MH - Animals MH - Bacillus/chemistry/*immunology MH - Benzoquinones/*chemistry MH - Cells, Cultured MH - Cytokines/genetics/*immunology MH - *Gene Expression Regulation MH - Glucosides/chemistry/*immunology/isolation & purification MH - Humans MH - Interleukin-12 Subunit p35/genetics/*immunology MH - Interleukin-12 Subunit p40/genetics/*immunology MH - Interleukin-23 Subunit p19/genetics/*immunology MH - Kinetics MH - Leukocytes/*immunology MH - Male MH - Mice MH - Transcription Factor RelA/genetics EDAT- 2010/12/15 06:00 MHDA- 2011/02/08 06:00 CRDT- 2010/12/15 06:00 PHST- 2010/07/21 00:00 [received] PHST- 2010/11/12 00:00 [revised] PHST- 2010/11/15 00:00 [accepted] PHST- 2010/12/15 06:00 [entrez] PHST- 2010/12/15 06:00 [pubmed] PHST- 2011/02/08 06:00 [medline] AID - S0008-8749(10)00289-3 [pii] AID - 10.1016/j.cellimm.2010.11.005 [doi] PST - ppublish SO - Cell Immunol. 2011;267(1):67-75. doi: 10.1016/j.cellimm.2010.11.005. Epub 2010 Nov 19.