Journal: Cell Death & Disease
Article Title: Tubular CD44 plays a key role in aggravating AKI through NF-κB p65-mediated mitochondrial dysfunction
doi: 10.1038/s41419-025-07438-x
Figure Lengend Snippet: A and B HKC-8 was transfected with Ctrl-shR or CD44-shR and then were incubated in basal culture medium in a 1% O 2 environment for 24 h and then were reoxygenated in normal O 2 for 6 h. Representative western blot ( A ) and graphical presentations of p-p38/p38, p-ERK1/2/ERK1/2, and p-p65 protein expression levels are shown. ** P < 0.01 versus Crtl-shR group; ## P < 0.01, ### P < 0.001 versus H/R with Crtl-shR group ( n = 3). C Representative micrographs show the expression of p-p65 and MitoSox staining in different groups, as indicated. Arrows indicate positive staining. Cells cultured on coverslips were stained with an antibody against p-p65 or were stained with MitoSox. Scale bar, 25 or 50 μm. D Graphic presentation shows the relative mRNA levels of PGC-1α in different groups as indicated. ** P < 0.01 versus Crtl-shR group; ## P < 0.01 versus H/R with Crtl-shR group ( n = 3). E and F Representative western blot ( E ) and graphical representations of PGC-1α, TOMM20, CPT1a, and PPARα protein expression levels are shown. * P < 0.05, ** P < 0.01 versus Crtl-shR group; # P < 0.05, ## P < 0.01 versus H/R with Crtl-shR group ( n = 3). G Representative micrographs show Nile Red staining and TUNEL assay in different groups, as indicated. Arrows indicate positive staining. Cells cultured on coverships were stained with Nile Red or TUNEL assay. Scale bar, 25 or 50 μm. H Co-localization of CD44 and cleaved caspase 3 in HKC-8 after H/R treatment. Cells cultured on coverships were subjected to immunostaining of CD44 (red) and cleaved caspase 3 (green). Scale bar, 50 μm. I and J Representative western blot ( I ) and graphical representations of BCL2, BAX, and cleaved caspase 3 protein expression levels are shown. ** P < 0.01 versus Crtl-shR group; # P < 0.05 versus H/R with Crtl-shR group ( n = 3). K and L HKC-8 was transfected with pcDNA3 or p-HA-CD44 overexpression plasmid and then were incubated in basal culture medium in a 1% O 2 environment for 24 h and then were reoxygenated in normal O 2 for 6 h. Representative western blot ( K ) and graphical representations of CD44, p-ERK1/2/ERK1/2, p-p38/p38 and p-p65 protein expression levels are shown. * P < 0.05, ** P < 0.01, *** P < 0.001 versus pcDNA3 group; # P < 0.05, ## P < 0.01 versus H/R with pcDNA3 group ( n = 3). M and N Representative western blot ( M ) and graphical presentations of PGC-1α, CPT1a, and PPARα protein expression levels are shown. * P < 0.05, *** P < 0.001 versus pcDNA3 group; # P < 0.05 versus H/R with pcDNA3 group ( n = 3). O Representative micrographs show MitoSox staining in different groups, as indicated. Arrow indicates positive staining. Cells cultured on coverships were stained with MitoSox. Scale bar, 25 μm. P and Q Representative western blot ( P ) and graphical representations of BCL2, BAX, and cleaved caspase 3 protein expression levels are shown. * P < 0.05, ** P < 0.01 versus pcDNA3 group; # P < 0.05; ## P < 0.01 versus H/R with pcDNA3 group ( n = 3).
Article Snippet: All primary antibodies used were as follows: rabbit anti-CD44 (A00052; Boster), rabbit anti-Cleaved caspase 3 (25128-1-AP; Proteintech), rabbit anti-Perilipin 2 (A20843; Abclonal), rabbit anti-PPARα (A24853; Abclonal), rabbit anti-p-p38 (AP0526; Abclonal), rabbit anti-p-p65 (AP0475; Abclonal), rabbit anti-p65 (8242; Cell Signaling Technology), rabbit anti-TOMM20 (ab186735; Abcam), mouse anti-CD44 (60224-1-Ig; Proteintech), mouse anti-CPT1a (ab128568; Abcam), mouse anti-PGC-1α (66368-1-Ig; Proteintech), mouse anti-TOMM20 (66777-1-Ig; Proteintech), rat anti-CD44 (AB119348; Abcam), anti-LTL (FL-1321; VECTOR Laboratories), anti-PNA (FL-1071; VECTOR Laboratories), anti-DBA (FL1031; VECTOR Laboratories).
Techniques: Transfection, Incubation, Western Blot, Expressing, Staining, Cell Culture, TUNEL Assay, Immunostaining, Over Expression, Plasmid Preparation