Review



tlr4 inhibitor cli 095  (InvivoGen)


Bioz Verified Symbol InvivoGen is a verified supplier
Bioz Manufacturer Symbol InvivoGen manufactures this product  
  • Logo
  • About
  • News
  • Press Release
  • Team
  • Advisors
  • Partners
  • Contact
  • Bioz Stars
  • Bioz vStars
  • 96

    Structured Review

    InvivoGen tlr4 inhibitor cli 095
    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a <t>TLR4</t> pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Tlr4 Inhibitor Cli 095, supplied by InvivoGen, used in various techniques. Bioz Stars score: 96/100, based on 475 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/tlr4 inhibitor cli 095/product/InvivoGen
    Average 96 stars, based on 475 article reviews
    tlr4 inhibitor cli 095 - by Bioz Stars, 2026-06
    96/100 stars

    Images

    1) Product Images from "Hemoglobin inhibits fibroblast-to-cardiomyocyte reprogramming via TLR2/TLR4-dependent chromatin compaction"

    Article Title: Hemoglobin inhibits fibroblast-to-cardiomyocyte reprogramming via TLR2/TLR4-dependent chromatin compaction

    Journal: Molecular Therapy. Nucleic Acids

    doi: 10.1016/j.omtn.2026.102900

    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a TLR4 pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Figure Legend Snippet: Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a TLR4 pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).

    Techniques Used: Incubation, Western Blot, Control, Isolation, Expressing

    Hemoglobin mediates gene repression through TLR2 and TLR4 (A and B) A study was conducted to determine the effect of hemoglobin (Hb) on (A) fibroblast-to-cardiomyocyte reprogramming and (B) fibroblast gene expression. With respect to fibroblast-to-cardiomyocyte reprogramming, cardiac fibroblasts were transfected with either miR combo or a non-targeting control miR. 24 h later, the cells were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Fourteen days after miR transfection, cells were analyzed for expression of the indicated cardiomyocyte specific genes by qPCR. Expression values were normalized to the housekeeping gene Gapdh. N = 6–10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). t test was used to determine the significance between the miR combo groups (## p < 0.01, # p < 0.05; ns, not significant). With respect to fibroblast gene expression, cardiac fibroblasts were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Expression of the indicated fibroblast-specific genes was determined by qPCR and normalized to the housekeeping gene Gapdh. N = 10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Figure Legend Snippet: Hemoglobin mediates gene repression through TLR2 and TLR4 (A and B) A study was conducted to determine the effect of hemoglobin (Hb) on (A) fibroblast-to-cardiomyocyte reprogramming and (B) fibroblast gene expression. With respect to fibroblast-to-cardiomyocyte reprogramming, cardiac fibroblasts were transfected with either miR combo or a non-targeting control miR. 24 h later, the cells were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Fourteen days after miR transfection, cells were analyzed for expression of the indicated cardiomyocyte specific genes by qPCR. Expression values were normalized to the housekeeping gene Gapdh. N = 6–10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). t test was used to determine the significance between the miR combo groups (## p < 0.01, # p < 0.05; ns, not significant). With respect to fibroblast gene expression, cardiac fibroblasts were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Expression of the indicated fibroblast-specific genes was determined by qPCR and normalized to the housekeeping gene Gapdh. N = 10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).

    Techniques Used: Gene Expression, Transfection, Control, Incubation, Expressing



    Similar Products

    96
    InvivoGen tlr4 inhibitor cli 095
    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a <t>TLR4</t> pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Tlr4 Inhibitor Cli 095, supplied by InvivoGen, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/tlr4 inhibitor cli 095/product/InvivoGen
    Average 96 stars, based on 1 article reviews
    tlr4 inhibitor cli 095 - by Bioz Stars, 2026-06
    96/100 stars
      Buy from Supplier

    96
    InvivoGen tlr4 inhibitor
    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a <t>TLR4</t> pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Tlr4 Inhibitor, supplied by InvivoGen, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/tlr4 inhibitor/product/InvivoGen
    Average 96 stars, based on 1 article reviews
    tlr4 inhibitor - by Bioz Stars, 2026-06
    96/100 stars
      Buy from Supplier

    96
    InvivoGen inhibitor
    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a <t>TLR4</t> pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Inhibitor, supplied by InvivoGen, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/inhibitor/product/InvivoGen
    Average 96 stars, based on 1 article reviews
    inhibitor - by Bioz Stars, 2026-06
    96/100 stars
      Buy from Supplier

    96
    InvivoGen dmso
    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a <t>TLR4</t> pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Dmso, supplied by InvivoGen, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/dmso/product/InvivoGen
    Average 96 stars, based on 1 article reviews
    dmso - by Bioz Stars, 2026-06
    96/100 stars
      Buy from Supplier

    96
    InvivoGen cli095
    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a <t>TLR4</t> pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Cli095, supplied by InvivoGen, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/cli095/product/InvivoGen
    Average 96 stars, based on 1 article reviews
    cli095 - by Bioz Stars, 2026-06
    96/100 stars
      Buy from Supplier

    96
    InvivoGen cli 095
    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a <t>TLR4</t> pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).
    Cli 095, supplied by InvivoGen, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/result/cli 095/product/InvivoGen
    Average 96 stars, based on 1 article reviews
    cli 095 - by Bioz Stars, 2026-06
    96/100 stars
      Buy from Supplier

    Image Search Results


    Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a TLR4 pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).

    Journal: Molecular Therapy. Nucleic Acids

    Article Title: Hemoglobin inhibits fibroblast-to-cardiomyocyte reprogramming via TLR2/TLR4-dependent chromatin compaction

    doi: 10.1016/j.omtn.2026.102900

    Figure Lengend Snippet: Hemoglobin activates TLR signaling in cardiac fibroblasts (A) Cardiac fibroblasts were incubated with Hb (5 mg/mL) for the indicated times. Protein extracts were analyzed by immunoblotting for p-NFκB and p-MAPK. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB and p-MAPK band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). (B) Cardiac fibroblasts were incubated either vehicle or with varying concentrations of a TLR4 pharmacological inhibitor for 3 h. Hb (5 mg/mL) was then added. After 1 h, protein extracts were isolated and subsequently analyzed by immunoblotting for p-NFκB. Gapdh was used as a loading control. Representative immunoblots are shown on the left-hand side. Quantification was performed by normalizing p-NFκB band densities with those of the loading control. N = 4. One-sample t tests were used to compare groups to the control group (∗ p < 0.05; ns, not significant). (C) Cardiac fibroblasts were incubated with either LPS or Hb for 24 h, after which expression of the indicated pro-inflammatory cytokines was determined by qPCR. Expression values are shown relative to the housekeeping gene Gapdh. N = 6. ANOVA with Tukey post-hoc tests were used to determine significance (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).

    Article Snippet: Hb (Millipore Sigma, H2625), TLR2 signaling inhibitor-TL2-C29 (InvivoGen, catalog no. inh-c29), and TLR4 inhibitor-CLI-095 (InvivoGen, catalog no. tlrl-cli95-4) were used.

    Techniques: Incubation, Western Blot, Control, Isolation, Expressing

    Hemoglobin mediates gene repression through TLR2 and TLR4 (A and B) A study was conducted to determine the effect of hemoglobin (Hb) on (A) fibroblast-to-cardiomyocyte reprogramming and (B) fibroblast gene expression. With respect to fibroblast-to-cardiomyocyte reprogramming, cardiac fibroblasts were transfected with either miR combo or a non-targeting control miR. 24 h later, the cells were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Fourteen days after miR transfection, cells were analyzed for expression of the indicated cardiomyocyte specific genes by qPCR. Expression values were normalized to the housekeeping gene Gapdh. N = 6–10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). t test was used to determine the significance between the miR combo groups (## p < 0.01, # p < 0.05; ns, not significant). With respect to fibroblast gene expression, cardiac fibroblasts were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Expression of the indicated fibroblast-specific genes was determined by qPCR and normalized to the housekeeping gene Gapdh. N = 10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).

    Journal: Molecular Therapy. Nucleic Acids

    Article Title: Hemoglobin inhibits fibroblast-to-cardiomyocyte reprogramming via TLR2/TLR4-dependent chromatin compaction

    doi: 10.1016/j.omtn.2026.102900

    Figure Lengend Snippet: Hemoglobin mediates gene repression through TLR2 and TLR4 (A and B) A study was conducted to determine the effect of hemoglobin (Hb) on (A) fibroblast-to-cardiomyocyte reprogramming and (B) fibroblast gene expression. With respect to fibroblast-to-cardiomyocyte reprogramming, cardiac fibroblasts were transfected with either miR combo or a non-targeting control miR. 24 h later, the cells were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Fourteen days after miR transfection, cells were analyzed for expression of the indicated cardiomyocyte specific genes by qPCR. Expression values were normalized to the housekeeping gene Gapdh. N = 6–10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant). t test was used to determine the significance between the miR combo groups (## p < 0.01, # p < 0.05; ns, not significant). With respect to fibroblast gene expression, cardiac fibroblasts were incubated with vehicle, a TLR2 pharmacological inhibitor, a TLR4 pharmacological inhibitor, or a combination of both pharmacological inhibitors for 3 h. After incubation with the indicated pharmacological inhibitors, Hb was added (5 mg/mL) to the media. All media was replaced the next day. Expression of the indicated fibroblast-specific genes was determined by qPCR and normalized to the housekeeping gene Gapdh. N = 10. One-sample t tests were used to compare groups to the control group (∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05; ns, not significant).

    Article Snippet: Hb (Millipore Sigma, H2625), TLR2 signaling inhibitor-TL2-C29 (InvivoGen, catalog no. inh-c29), and TLR4 inhibitor-CLI-095 (InvivoGen, catalog no. tlrl-cli95-4) were used.

    Techniques: Gene Expression, Transfection, Control, Incubation, Expressing