Overexpression of SOCS3 exhibits preclinical antitumor activity against malignant pleural mesothelioma.
Malignant pleural mesothelioma (MPM) is an aggressive tumor with poor prognosis for which an effective therapy remains to be established. Our study investigated the therapeutic potential of the suppressor of cytokine signaling 3 (SOCS3), an endogenous inhibitor of intracellular signaling pathways, for treatment of MPM. We infected MPM cells (H226, EHMES-1, MESO-1 and MESO-4) with an adenovirus-expressing SOCS3 (AdSOCS3) to examine the effect of SOCS3 overexpression on MPM cells. SOCS3 overexpression reduced MPM proliferation and induced apoptosis and partial G0/G1 arrest. SOCS3 also inhibited the proliferation of MPM cells via multiple signaling pathways including Janus kinase (JAK)/signal transducer and activator of transcription 3 (STAT3), extracellular signal-regulated kinase (ERK), focal adhesion kinase (FAK) and p53 pathways. Notably, AdSOCS3 treatment inhibited tumor growth in an MPM pleural xenograft model. These findings demonstrate that overexpression of SOCS3 has a potent antitumor effect against MPM both in vitro and in vivo and indicate the potential for clinical use of SOCS3 for MPM treatment.
Iwahori
Kota
K
Laboratory for Immune Signal, National Institute of Biomedical Innovation, Osaka, Japan.
Serada
Satoshi
S
Fujimoto
Minoru
M
Nomura
Shintaro
S
Osaki
Tadashi
T
Lee
Chun Man
CM
Mizuguchi
Hiroyuki
H
Takahashi
Tsuyoshi
T
Ripley
Barry
B
Okumura
Meinoshin
M
Kawase
Ichiro
I
Kishimoto
Tadamitsu
T
Naka
Tetsuji
T
D000256:Adenoviridae / Q000235:genetics; D000818:Animals; D017209:Apoptosis; D015153:Blotting, Western; D002453:Cell Cycle; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008654:Mesothelioma / Q000378:metabolism / Q000473:pathology / Q000517:prevention & control*; D051379:Mice; D008813:Mice, Inbred ICR; D008819:Mice, Nude; D010997:Pleural Neoplasms / Q000378:metabolism / Q000473:pathology / Q000517:prevention & control*; D012333:RNA, Messenger / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D000071223:Suppressor of Cytokine Signaling 3 Protein; D050826:Suppressor of Cytokine Signaling Proteins / Q000235:genetics / Q000378:metabolism*; D023041:Xenograft Model Antitumor Assays
D012333:RNA, Messenger; C106644:SOCS3 protein, human; D000071223:Suppressor of Cytokine Signaling 3 Protein; D050826:Suppressor of Cytokine Signaling Proteins