[Expression of transcription factors T-bet and GATA-3 in peripheral blood mononuclear cells from patients with systemic lupus erythematosus].
OBJECTIVE
To investigate the role of transcription factors T-bet and GATA-3 in the pathogenesis of systemic lupus erythematosus (SLE).


METHODS
The expression of T-bet and GATA-3 mRNA in the peripheral blood mononuclear cells (PBMCs) of 60 patients with SLE and 20 normal control subjects were detected by reverse transcriptase-polymerase chain reaction (RT-PCR).


RESULTS
Compared with the normal controls, T-bet mRNA expression decreased whereas GATA-3 mRNA expression increased significantly in patients with SLE, active SLE and inactive SLE.


CONCLUSIONS
The high expression of GATA-3 promotes the immature T cells to differentiate into Th2 cells, induces Th2 cells to secrete the cytokines IL-6 and IL-10, which, along with the low expression of Th1 as a result of T-bet expression inhibition, causes B cell activation to produce a large quantity of autoantibodies, leading finally to multiple organ injuries. Effective regulation of GATA-3 expression may provide a new clue for the treatment of SLE.
Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. pengxb@fimmu.com
Xue-biao
XB
Peng
Yue
Y
Deng
D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D002648:Child; D005260:Female; D050990:GATA3 Transcription Factor / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000378:metabolism*; D008180:Lupus Erythematosus, Systemic / Q000097:blood*; D008297:Male; D008875:Middle Aged; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D020825:T-Box Domain Proteins / Q000235:genetics / Q000378:metabolism*; D055815:Young Adult; D000098815:T-bet Transcription Factor
D050990:GATA3 Transcription Factor; C494749:GATA3 protein, human; D012333:RNA, Messenger; D020825:T-Box Domain Proteins; D000098815:T-bet Transcription Factor