Inhibition of JMJD3 with GSKJ4 accelerates renal dysfunction and renal fibrosis in mice with SNx. (A) Schematic experimental design of SNx, and both blood and kidney samples were collected at 8 weeks after removal of right kidneys. (B) Serum creatinine levels. (C) Blood urea nitrogen. (D) Photomicrographs illustrating Masson trichrome staining of kidney tissue. Original magnification, ×200. (E) The percentage of Masson trichrome-positive tubulointerstitial area (blue) relative to the whole area were quantified. (F) Whole kidney tissue lysates from non-surgical (Sham) and remnant kidneys after surgery (SNx) were subject to immunoblot analysis with specific antibodies against α-SMA, fibronectin, collagen III, JMJD3, H3K27me3 or β-tubulin. Expression levels of α-SMA (G), fibronectin (H), collagen III (I), JMJD3 (J) and H3K27me3 (K) were quantified by densitometry analysis and then normalized with β-tubulin. (L) Photomicrographs illustrating immunohistochemical staining of JMJD3 (Original magnification ×200). Scale bar= 50 µm. Data are means ± sem.*P < 0.05; **P < 0.01.