Targeting the androgen receptor with siRNA promotes prostate cancer metastasis through enhanced macrophage recruitment via CCL2/CCR2-induced STAT3 activation
Article first published online: 27 AUG 2013
Copyright © 2013 EMBO Molecular Medicine
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
EMBO Molecular Medicine
Volume 5, Issue 9, pages 1383–1401, September 2013
How to Cite
Izumi, K., Fang, L.-Y., Mizokami, A., Namiki, M., Li, L., Lin, W.-J. and Chang, C. (2013), Targeting the androgen receptor with siRNA promotes prostate cancer metastasis through enhanced macrophage recruitment via CCL2/CCR2-induced STAT3 activation. EMBO Mol Med, 5: 1383–1401. doi: 10.1002/emmm.201202367
- Issue published online: 3 SEP 2013
- Article first published online: 27 AUG 2013
- Manuscript Accepted: 26 JUN 2013
- Manuscript Revised: 21 JUN 2013
- Manuscript Received: 12 DEC 2012
- NIH. Grant Number: CA127300 and CA156700
- DOD. Grant Number: W81XWH-10-1-0300
- Taiwan Department of Health Clinical Trial and Research Center of Excellence. Grant Number: DOH99-TD-B-111-004
- China 973 National Program on Key Basic Research Project. Grant Number: 2012CB518305
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Figure S1.Cytokine array analysis of the CM isolated from C4-2 scr and siAR cells. CM were collected after 24 h incubation (left). Increased CCL2 expression was observed in CM of C4-2 siAR cells (yellow square). The array map is shown at right. Ref = reference spot, Neg = negative control..
Figure S2. qPCR analysis of M2 markers expression in THP-1 cells. CCL22, MRC1, IL-10, and Arg1 expression in THP-1 scr or THP-1 siAR cells with or without co-cultured with C4-2 cells are shown.
Figure S3.Western blot analysis of CCL2, EMT markers and AR in parental LNCaP and LAPC4 cells after treated with CM of THP-1 scr and siAR, or co-cultured with THP-1 scr and siAR cells for 24 h. Similar regulation with CCL2, EMT markers, and AR in C4-2 cells was noted in LNCaP (left) and LAPC4 (right) cells co-cultured with THP-1 siAR cells.
Figure S4.Western blot analysis of CCL2, EMT markers and AR in monoculture LNCaP and LAPC4 cells (scr and siAR). Similar regulation with CCL2, EMT markers, and AR in C4-2 scr and siAR cells was noted in LNCaP scr and siAR (left) and LAPC4 scr and siAR (right) cells.
Figure S5. IHC analysis of PIAS3 in TRAMP-C1 xenograft tumours (scr and siAR). The strong staining of PIAS3 in sections of TRAMP-C1 scr tumours is noted (left). In contrast, only marginal PIAS3 immunoreactivity in TRAMP-C1 siAR tumours is observed (right), suggesting AR silencing in TRAMP-C1 cells reduces the expression of PIAS3 protein. The strong PIAS3 staining in the benign control prostate gland indicates that benign prostate in TRAMP-C1 siAR tumours has not lost PIAS3. Black arrows indicate PIAS3-positive tumour cells. T = tumour; B = benign gland of anterior prostate.
Figure S6. The clinical information of prostate biopsy samples at diagnosis or CRPC stage. (A) The patient's information from biopsy samples is shown. PSA values at diagnosis and at CRPC stage were statistically analysed with paired one-tailed t-test. TNM = TNM classification by UICC 1997, GS = Gleason score, Dx = diagnosis, Re-Bx = re-biopsy, and N/A = not available. (B) The number of CD68+ positive macrophages in prostate biopsy samples collected from patients during diagnosis or developing CRPC stage (left). The representative picture shows CD68+ cells (arrows) in Case E at CRPC stage (right).
Figure S7. IHC analysis of prostate biopsy samples at diagnosis or CRPC stage. IHC of CCL2, AR, PIAS3, and pSTAT3 in prostate biopsy samples at diagnosis and at CRPC stage are shown, neg = negative; mod = moderate; str = strong. The specimen of PIAS3 in Case C was not available.
Figure S8. Gene profiling analyses using public database show increased CCL2 in human PCa tissues and androgen-deprived mouse prostates. (A) GDS1439 database and (B–H) GDS2562 database were obtained from the NCBI Gene Expression Omnibus (GEO) website. Bars, Mean ± SEM.
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