Journal: Journal of Cellular and Molecular Medicine

Article Title: Up‐regulated TLR 4 in cardiomyocytes exacerbates heart failure after long‐term myocardial infarction

doi: 10.1111/jcmm.12659

Figure Lengend Snippet: Increased toll‐like receptor 4 ( TLR 4) expression in the myocardium of chronic heart failure ( CHF ) rats. ( A ) TLR 4 mRNA levels in infarct and remote myocardium of sham and CHF rats (n = 6/group). ( B ) Representative Western blot images and ( C ) quantification of TLR 4 proteins in infarct and remote myocardium of sham and CHF rats (n = 4/group). ( D ) Representative immunohistochemistry images of heart sections stained with TLR 4 (green) and CD 45 (red). The yellow box indicates the enlarged area shown on the right (data are means ± SD , * P < 0.05, ** P < 0.01 versus respective sham).

Article Snippet: The membrane was then blocked with 5% non‐fat dried milk, and probed with the primary antibody against TLR4 (Cat. NB100‐56566; Novus Biologicals, Littleton, CO, USA) followed by the peroxidase‐conjugated secondary antibody, at the concentration of 1:500 and 1:1000 respectively.

Techniques: Expressing, Western Blot, Immunohistochemistry, Staining

Journal: Journal of Cellular and Molecular Medicine

Article Title: Up‐regulated TLR 4 in cardiomyocytes exacerbates heart failure after long‐term myocardial infarction

doi: 10.1111/jcmm.12659

Figure Lengend Snippet: Increased toll‐like receptor 4 ( TLR 4) expression in the surviving cardiomyocytes of chronic heart failure ( CHF ) rats. ( A ) Representative immunofluorescent images of TLR 4 in cardiomyocytes isolated from sham and CHF rats. ( B ) TLR 4 mRNA levels in cardiomyocytes isolated from sham and CHF rats. ( C ) Representative Western blot images and ( D ) quantification of TLR 4 proteins in cardiomyocytes isolated from sham and CHF rats (data are means ± SD , n = 6/group, ** P < 0.01 versus sham).

Article Snippet: The membrane was then blocked with 5% non‐fat dried milk, and probed with the primary antibody against TLR4 (Cat. NB100‐56566; Novus Biologicals, Littleton, CO, USA) followed by the peroxidase‐conjugated secondary antibody, at the concentration of 1:500 and 1:1000 respectively.

Techniques: Expressing, Isolation, Western Blot

Journal: Journal of Cellular and Molecular Medicine

Article Title: Up‐regulated TLR 4 in cardiomyocytes exacerbates heart failure after long‐term myocardial infarction

doi: 10.1111/jcmm.12659

Figure Lengend Snippet: Toll‐like receptor 4 ( TLR 4)‐sh RNA lentivirus reduced myocardial inflammation and improved heart function after myocardial infarction ( MI ). The rats received intra‐myocardial injection of normal saline ( NS ), control‐sh RNA lentivirus or TLR 4‐sh RNA lentivirus (1 × 10 9 TU /ml, 100 μl/heart) just after left anterior descending coronary artery ( LAD ) ligation or sham operation. All examinations were performed after 4 weeks of MI . ( A ) Expression of green fluorescent protein ( GFP ; green), the marker gene carried by TLR 4‐sh RNA lentivirus, in the myocardium. The nuclei were counter‐stained with Hoechst 33258 (blue). ( B ) Representative Western blot images and quantification of TLR 4 proteins in sham and chronic heart failure ( CHF ) myocardium. ( C ) tumour necrosis factor ( TNF )‐α and interleukin ( IL )‐6 protein contents in infarct and remote myocardium. ( D ) Representative images of Masson's trichrome staining (upper panel) and quantification (lower panel) of post‐infarct failing hearts, showing that TLR 4‐sh RNA lentivirus reduced cardiac fibrosis. Cross‐sections were cut at the midhorizontal plane of the fixed paraffin‐embedded heart, and stained with Masson's trichrome reagents. ( E ) Infarct size of post‐infarct failing hearts. ( F ) Fractional shortening (%) of the left ventricle (data are means ± SD , n = 4/group, a P < 0.05, A P < 0.01 versus respective sham‐ NS ; B P < 0.01 versus respective CHF ‐ NS ).

Article Snippet: The membrane was then blocked with 5% non‐fat dried milk, and probed with the primary antibody against TLR4 (Cat. NB100‐56566; Novus Biologicals, Littleton, CO, USA) followed by the peroxidase‐conjugated secondary antibody, at the concentration of 1:500 and 1:1000 respectively.

Techniques: Injection, Saline, Control, Ligation, Expressing, Marker, Staining, Western Blot

Journal: Journal of Cellular and Molecular Medicine

Article Title: Up‐regulated TLR 4 in cardiomyocytes exacerbates heart failure after long‐term myocardial infarction

doi: 10.1111/jcmm.12659

Figure Lengend Snippet: Enhanced binding activity of toll‐like receptor 4 ( TLR 4) in chronic heart failure ( CHF ) cardiomyocytes to lipopolysaccharide ( LPS ) and heat shock protein 60 ( HSP 60). Isolated cardiomyocytes were cultured in a CO 2 incubator at 37°C for 24 hrs, then the binding assay was performed at 4°C for 30 min. To block TLR 4, cultured cardiomyocytes were incubated with TLR 4 neutralizing antibody (anti‐ TLR 4, 5 μg/ml) at 37°C for 15 min., and subsequently incubated with FITC ‐ LPS or OG ‐ HSP 60 at 4°C for 30 min. ( A ) Representative fluorescent images of isolated cardiomyocytes after the incubation with FITC ‐ LPS (green) or OG ‐ HSP 60 (green). ( B ) Binding curves of FITC ‐ LPS to cardiomyocytes. ( C ) Binding curves of OG ‐ HSP 60 to cardiomyocytes.

Article Snippet: The membrane was then blocked with 5% non‐fat dried milk, and probed with the primary antibody against TLR4 (Cat. NB100‐56566; Novus Biologicals, Littleton, CO, USA) followed by the peroxidase‐conjugated secondary antibody, at the concentration of 1:500 and 1:1000 respectively.

Techniques: Binding Assay, Activity Assay, Isolation, Cell Culture, Blocking Assay, Incubation

Journal: Journal of Cellular and Molecular Medicine

Article Title: Up‐regulated TLR 4 in cardiomyocytes exacerbates heart failure after long‐term myocardial infarction

doi: 10.1111/jcmm.12659

Figure Lengend Snippet: Increased cytokine production mediated by toll‐like receptor 4 ( TLR 4) in chronic heart failure ( CHF ) cardiomyocytes. Cultured cardiomocytes from sham and CHF rats were treated with lipopolysaccharide ( LPS ; 1 μg/ml) or heat shock protein 60 ( HSP 60; 1 μg/ml) for 6 hrs. TLR 4 neutralizing antibody (anti‐ TLR 4, 5 μg/ml) was added 15 min before LPS or HSP 60 treatment. ( A ) Tumour necrosis factor ( TNF )‐α and interleukin ( IL )‐6 mRNA levels (n = 6/group). ( B ) The amount of TNF ‐α and IL ‐6 released into culture supernatant (n = 6/group). ( C ) Representative Western blot images and quantification of p65 in the nuclei of cardiomyocytes from three independent experiments (data are means ± SD , a P < 0.05, A P < 0.01 versus respective sham; b P < 0.05, B P < 0.01 versus sham‐blank; c P < 0.05, C P < 0.01 versus CHF ‐blank; d P < 0.05, D P < 0.01 versus respective LPS ; e P < 0.05, E P < 0.01 versus respective HSP60).

Article Snippet: The membrane was then blocked with 5% non‐fat dried milk, and probed with the primary antibody against TLR4 (Cat. NB100‐56566; Novus Biologicals, Littleton, CO, USA) followed by the peroxidase‐conjugated secondary antibody, at the concentration of 1:500 and 1:1000 respectively.

Techniques: Cell Culture, Western Blot

Journal: Journal of Cellular and Molecular Medicine

Article Title: Up‐regulated TLR 4 in cardiomyocytes exacerbates heart failure after long‐term myocardial infarction

doi: 10.1111/jcmm.12659

Figure Lengend Snippet: Primers for real‐time PCR

Article Snippet: The membrane was then blocked with 5% non‐fat dried milk, and probed with the primary antibody against TLR4 (Cat. NB100‐56566; Novus Biologicals, Littleton, CO, USA) followed by the peroxidase‐conjugated secondary antibody, at the concentration of 1:500 and 1:1000 respectively.

Techniques:

Journal: Frontiers in Immunology

Article Title: Isoimperatorin alleviates fungal keratitis by regulating NF-κB pathway and macrophage immune response

doi: 10.3389/fimmu.2026.1676397

Figure Lengend Snippet: Effect of isoimperatorin on TLR4/MyD88/IKK/NF-κB pathway. Changes in protein levels of TLR4 (A) , MyD88 (B) , IKK (C) , p-IKK (D) , NK-κB (E) , p-NF-κB (F) , p-IKK/IKK (G) and p-NF-κB/NF-κB (H) in mouse corneas. Immunofluorescence staining images of TLR4 (I) and MyD88 (J) in corneas from DMSO, (A) fumigatus + DMSO and (A) fumigatus + isoimperatorin groups on day 3 of infection. Statistical analysis of TLR4 (K) and MyD88 (L) relative fluorescence intensity. All experiments were performed in triplicate (n = 3), with data presented as mean ± SD and 5 random fields examined per sample. *P<0.05, **P<0.01, ***P<0.001, ****P<0.0001, and ns indicates nonsignificant vs. control group.

Article Snippet: After suctioning off excess blocking solution, add the primary antibody diluted with blocking solution, including STAT3 (1:150, CST, USA, p-STAT3 (1:150, CST, USA), TLR4 (1:150, Proteintech, China), MyD88 (1:150, Proteintech, China), NIMP-R14 (1:150, Santa Cruz, USA) and F4/80 (1:150, Santa Cruz, USA), add 20mL to each specimen, and place the slices in a wet box at 4°C overnight.

Techniques: Immunofluorescence, Staining, Infection, Fluorescence, Control

Journal: Kidney international

Article Title: Poly(ADP-ribose) polymerase 1 activation is required for cisplatin nephrotoxicity.

doi: 10.1038/ki.2012.64

Figure Lengend Snippet: Figure 5 | Poly(ADP-ribose) polymerase 1 (Parp1) deficiency inhibits inflammation induced by cisplatin injection in kidneys. The kidneys in Parp1-knockout (KO) and -wild-type (WT) male mice were harvested 0, 1, 2, 3, or 5 days after cisplatin (20 mg/kg body weight) or saline (control) injection. (a) Polymorphonuclear neutrophil (PMN)–positive cells were counted in 10 fields ( 200 magnification) per kidney (n ¼ 4 in each group). (b) The expression of intercellular adhesion molecule-1 (ICAM-1), tumor necrosis factor-a (TNF-a), and Toll-like receptor 4 (TLR4) in kidneys was examined by western blot analysis. Anti-b-actin antibody was used as a loading control. (c–e) The intensities of protein bands (ICAM-1, 110 kDa; TNF-a, 26 kDa; TLR4, 90 kDa; all approximate) were quantified using the Lab Works analysis software (n ¼ 6 in each group). *Po0.05 vs. 0 days, #Po0.05 vs. WT.

Article Snippet: Western blot analysis was confirmed, as described previously,62–64 using antibodies against PARP1, cleaved caspase-3, phospho-RelA, phospho-p38, phospho-38, phospho-JNK, JNK, phospho-MKK3/6, phospho-MKK4 (Cell Signaling, Beverly, MA), ICAM-1, RelA, IkBa (Santa Cruz, Santa Cruz, CA), PAR (BD Pharmingen, San Jose, CA), b-actin (Sigma, St. Louis, MO), TNF-a (Abcam, Cambridge, MA), or TLR4 (Imgenex, San Diego, CA).

Techniques: Injection, Knock-Out, Saline, Control, Expressing, Western Blot, Software

Journal: Kidney international

Article Title: Poly(ADP-ribose) polymerase 1 activation is required for cisplatin nephrotoxicity.

doi: 10.1038/ki.2012.64

Figure Lengend Snippet: Figure 8 | Poly(ADP-ribose) polymerase 1 (Parp1) deficiency blocks TLR4/MAPK/NF-jB/TNF-a signaling pathway during necrotic cell death induced by cisplatin treatment in primary culture of proximal tubule epithelial cells. The proximal tubule epithelial cells were isolated from Parp1-knockout (KO) and -wild-type (WT) mouse kidneys. After 18 h of starvation, the cells were treated with 400 mmol/l cisplatin for 4 h. Dimethyl sulfoxide (DMSO) was used as vehicle. To downregulate Toll-like receptor 4 (TLR4) expression, 500 pmol of small interference RNA (siRNA) was transfected on a 100-mm culture dish for 24 h before cisplatin or vehicle treatment. The same concentration of scramble siRNA was used as control. Pharmacological inhibitors (100 mmol/l of SB203580 against p38 activation, 10 mmol/l of SP600125 against c-Jun N-terminal kinase (JNK) activation, 100 mmol/l of ammonium pyrrolidinedithiocarbamate against nuclear factor-kB (NF-kB) activation, or 100 mmol/l of thalidomide against tumor necrosis factor-a (TNF-a) synthesis) or the same volume of DMSO (control) were added 2 h before cisplatin or vehicle treatment. Results are representative of experiments repeated three times.

Article Snippet: Western blot analysis was confirmed, as described previously,62–64 using antibodies against PARP1, cleaved caspase-3, phospho-RelA, phospho-p38, phospho-38, phospho-JNK, JNK, phospho-MKK3/6, phospho-MKK4 (Cell Signaling, Beverly, MA), ICAM-1, RelA, IkBa (Santa Cruz, Santa Cruz, CA), PAR (BD Pharmingen, San Jose, CA), b-actin (Sigma, St. Louis, MO), TNF-a (Abcam, Cambridge, MA), or TLR4 (Imgenex, San Diego, CA).

Techniques: Isolation, Knock-Out, Expressing, Transfection, Concentration Assay, Control, Activation Assay

Journal: Kidney international

Article Title: Poly(ADP-ribose) polymerase 1 activation is required for cisplatin nephrotoxicity.

doi: 10.1038/ki.2012.64

Figure Lengend Snippet: Figure 11 | Poly(ADP-ribose) polymerase 1 (PARP1) inhibitor reduces inflammation induced by cisplatin injection in kidneys. The kidneys in 129S1/SvImJ male mice were harvested 0, 3, or 5 days after cisplatin injection. The mice were administered either PJ34 (10 mg/kg body weight) or saline (control, Con) twice daily intraperitoneally from 24 h before cisplatin injection up to the time that they were killed. (a) Polymorphonuclear neutrophil (PMN)-positive cells were counted in 10 fields ( 200 magnification) per kidney (n ¼ 4 in each group). (b) The expression of Poly(ADP-ribose) (PAR), intercellular adhesion molecule-1 (ICAM-1), tumor necrosis factor-a (TNF-a), and Toll-like receptor 4 (TLR4) in kidneys was examined by western blot analysis. Anti-b-actin antibody was used as a loading control. (c–f) The intensities of protein bands (PAR, 116 kDa; ICAM-1, 110 kDa; TNF-a, 26 kDa; TLR4, 90 kDa; all approximate) were quantified using the Lab Works analysis software (n ¼ 4 in each group). *Po0.05 vs. 0 days; #Po0.05 vs. control.

Article Snippet: Western blot analysis was confirmed, as described previously,62–64 using antibodies against PARP1, cleaved caspase-3, phospho-RelA, phospho-p38, phospho-38, phospho-JNK, JNK, phospho-MKK3/6, phospho-MKK4 (Cell Signaling, Beverly, MA), ICAM-1, RelA, IkBa (Santa Cruz, Santa Cruz, CA), PAR (BD Pharmingen, San Jose, CA), b-actin (Sigma, St. Louis, MO), TNF-a (Abcam, Cambridge, MA), or TLR4 (Imgenex, San Diego, CA).

Techniques: Injection, Saline, Control, Expressing, Western Blot, Software

Journal: The American Journal of Pathology

Article Title: Enhanced Susceptibility to Endotoxic Shock and Impaired STAT3 Signaling in CD31-Deficient Mice

doi: 10.1016/s0002-9440(10)62243-2

Figure Lengend Snippet: Figure 11. TLR4 expression of WT and CD31-deficient splenocytes and endothelial cells remains constant and does not change following LPS treat- ment. Representative FACS analyses of WT (A) and KO (B) splenocytes in the absence and presence of LPS; KO (C) and PECAM-1 reconstituted (D) lung endothelial cells and KO (E) and WT (F) brain endothelial cells illus- trating essentially no differences in TLR4 expression. This was confirmed by Western blot analyses (data not shown).

Article Snippet: Splenocytes were prepared as described, fixed in 2% PFA, then stained with 0.5 g of polyclonal anti-mouse TLR4 (Imgenex) in Hanks’ buffered salt solution plus 1% BSA for 1 hour on ice, then, following two washes, in donkey anti-rabbit IgG F(ab )2 PE conjugate (Jackson Immunoresearch, West Grove, PA).

Techniques: Expressing, Western Blot