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human pcsk9 protein  (ACROBiosystems)


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    Structured Review

    ACROBiosystems human pcsk9 protein
    Association between circulating levels of plasma <t>PCSK9</t> with lipid (Total‐C, LDL‐C and HDL‐C) and inflammatory (IL6, MMP9 and ICAM1) profiles of study patients.
    Human Pcsk9 Protein, supplied by ACROBiosystems, used in various techniques. Bioz Stars score: 95/100, based on 18 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/human+pcsk9+protein/Human+PCSK9+Protein%2C+His+Tag/pmc12517242-122-10-13
    Average 95 stars, based on 18 article reviews
    human pcsk9 protein - by Bioz Stars, 2026-09
    95/100 stars

    Images

    1) Product Images from "PCSK9 and coronary atherosclerosis progression beyond LDL‐cholesterol in coronary artery disease patients"

    Article Title: PCSK9 and coronary atherosclerosis progression beyond LDL‐cholesterol in coronary artery disease patients

    Journal: European Journal of Clinical Investigation

    doi: 10.1111/eci.70083

    Association between circulating levels of plasma PCSK9 with lipid (Total‐C, LDL‐C and HDL‐C) and inflammatory (IL6, MMP9 and ICAM1) profiles of study patients.
    Figure Legend Snippet: Association between circulating levels of plasma PCSK9 with lipid (Total‐C, LDL‐C and HDL‐C) and inflammatory (IL6, MMP9 and ICAM1) profiles of study patients.

    Techniques Used: Clinical Proteomics

    Association of PCSK9 plasma levels and plaque progression. In univariate and multivariate models, data are depicted as β coefficients with 95% CIs for the annual change in plaque volume from baseline to follow‐up coronary CTA.
    Figure Legend Snippet: Association of PCSK9 plasma levels and plaque progression. In univariate and multivariate models, data are depicted as β coefficients with 95% CIs for the annual change in plaque volume from baseline to follow‐up coronary CTA.

    Techniques Used: Clinical Proteomics

    RNA‐sequencing results (A) Molecular pathway enrichment by STRING linking circulating PCSK9‐related gene dataset with KEGG databases; (B) PCSK9 and MMP9 plasma levels together with annual change of Necrotic Core and Fibrous PVs divided according to presence of PCSK9 gene expression in whole blood; (C) Functional annotation of PCSK9‐related genes according to GO Biological Processes. The 20 most significant biological processes are shown. The GeneRatio indicates how many PCSK9‐related genes included in the analysis were annotated to the specific GO biological process. GO terms were filtered for adjusted p ‐value <.01; (D) Visual combination of genes with related biological processes for enhanced graphical representation of functional categories related to innate immunity.
    Figure Legend Snippet: RNA‐sequencing results (A) Molecular pathway enrichment by STRING linking circulating PCSK9‐related gene dataset with KEGG databases; (B) PCSK9 and MMP9 plasma levels together with annual change of Necrotic Core and Fibrous PVs divided according to presence of PCSK9 gene expression in whole blood; (C) Functional annotation of PCSK9‐related genes according to GO Biological Processes. The 20 most significant biological processes are shown. The GeneRatio indicates how many PCSK9‐related genes included in the analysis were annotated to the specific GO biological process. GO terms were filtered for adjusted p ‐value <.01; (D) Visual combination of genes with related biological processes for enhanced graphical representation of functional categories related to innate immunity.

    Techniques Used: RNA Sequencing, Clinical Proteomics, Gene Expression, Functional Assay

    In vitro study. (A) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for VCAM‐1, ICAM‐1, and RPL13a; (B) ICAM‐1 and VCAM‐1 surface exposure in HUVEC treated with PCSK9 (.25–5 μg/mL) overnight. At the end of the incubation time, VCAM‐1 and ICAM‐1 surface exposure was quantified by EIA. Values are mean ± SD of optical density arbitrary units (AU) at 405 nm; (C) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for MCP‐1, IL6, IL8 and RPL13a.
    Figure Legend Snippet: In vitro study. (A) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for VCAM‐1, ICAM‐1, and RPL13a; (B) ICAM‐1 and VCAM‐1 surface exposure in HUVEC treated with PCSK9 (.25–5 μg/mL) overnight. At the end of the incubation time, VCAM‐1 and ICAM‐1 surface exposure was quantified by EIA. Values are mean ± SD of optical density arbitrary units (AU) at 405 nm; (C) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for MCP‐1, IL6, IL8 and RPL13a.

    Techniques Used: In Vitro, Reverse Transcription Polymerase Chain Reaction, Incubation

    Related Articles

    Purification:

    Article Title: PCSK9 is a critical regulator of the innate immune response and septic shock outcome
    Article Snippet: The culture medium for the duration of the experiment was 80% DMEM (Invitrogen, 11965-065) and 20% human plasma from pooled healthy donors. .. Addition of PCSK9 Three hours before LPS treatment, cells were treated with purified recombinant human PCSK9 protein (3 μg/ml) (ACROBiosystems, PC9-H5223) or a vehicle control. ..

    Article Title: Lipopolysaccharide Is Cleared from the Circulation by Hepatocytes via the Low Density Lipoprotein Receptor
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. In separate experiments, 24 hours after siRNA transfection cells were treated with 3 μg/mL purified recombinant human PCSK9 protein (ACROBiosystems PC9-H5223) as described previously [ ]. .. 1mg of LDL isolated from freshly obtained plasma from healthy donors was labeled with 10ug Alexa-488 Fluor LPS ( Salmonella Minnesota from Life Technologies L23356) at 37°C overnight.

    Article Title: Lipopolysaccharide Is Cleared from the Circulation by Hepatocytes via the Low Density Lipoprotein Receptor.
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. In separate experiments, 24 hours after siRNA transfection cells were treated with 3 μg/mL purified recombinant human PCSK9 protein (ACROBiosystems PC9-H5223) as described previously [12]. .. LPS-LDL uptake by HepG2 cells 1mg of LDL isolated from freshly obtained plasma from healthy donors was labeled with 10ug Alexa-488 Fluor LPS (SalmonellaMinnesota from Life Technologies L23356) at 37°C overnight.

    Article Title: PCSK9 is a critical regulator of the innate immune response and septic shock outcome
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. Three hours before LPS treatment, cells were treated with purified recombinant human PCSK9 protein (3 μg/ml) (ACROBiosystems, PC9-H5223) or a vehicle control. ..

    Recombinant:

    Article Title: PCSK9 is a critical regulator of the innate immune response and septic shock outcome
    Article Snippet: The culture medium for the duration of the experiment was 80% DMEM (Invitrogen, 11965-065) and 20% human plasma from pooled healthy donors. .. Addition of PCSK9 Three hours before LPS treatment, cells were treated with purified recombinant human PCSK9 protein (3 μg/ml) (ACROBiosystems, PC9-H5223) or a vehicle control. ..

    Article Title: Lipopolysaccharide Is Cleared from the Circulation by Hepatocytes via the Low Density Lipoprotein Receptor
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. In separate experiments, 24 hours after siRNA transfection cells were treated with 3 μg/mL purified recombinant human PCSK9 protein (ACROBiosystems PC9-H5223) as described previously [ ]. .. 1mg of LDL isolated from freshly obtained plasma from healthy donors was labeled with 10ug Alexa-488 Fluor LPS ( Salmonella Minnesota from Life Technologies L23356) at 37°C overnight.

    Article Title: Lipopolysaccharide Is Cleared from the Circulation by Hepatocytes via the Low Density Lipoprotein Receptor.
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. In separate experiments, 24 hours after siRNA transfection cells were treated with 3 μg/mL purified recombinant human PCSK9 protein (ACROBiosystems PC9-H5223) as described previously [12]. .. LPS-LDL uptake by HepG2 cells 1mg of LDL isolated from freshly obtained plasma from healthy donors was labeled with 10ug Alexa-488 Fluor LPS (SalmonellaMinnesota from Life Technologies L23356) at 37°C overnight.

    Article Title: PCSK9 is a critical regulator of the innate immune response and septic shock outcome
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. Three hours before LPS treatment, cells were treated with purified recombinant human PCSK9 protein (3 μg/ml) (ACROBiosystems, PC9-H5223) or a vehicle control. ..

    Article Title: Modulation of vascular endothelial inflammatory response by proprotein convertase subtilisin-kexin type 9.
    Article Snippet: Background and Aims: Endotoxins carried within LDL are cleared from the circulation via hepatic LDL receptor (LDLR)-mediated endocytosis.. Proprotein convertase subtilisin-kexin type 9 (PCSK9) reduces this clearance by down-regulating LDLR density on hepatocytes.. In addition to hepatocytes, vascular endothelial cells also express receptor targets of PCSK9, including LDLR.

    Control:

    Article Title: PCSK9 is a critical regulator of the innate immune response and septic shock outcome
    Article Snippet: The culture medium for the duration of the experiment was 80% DMEM (Invitrogen, 11965-065) and 20% human plasma from pooled healthy donors. .. Addition of PCSK9 Three hours before LPS treatment, cells were treated with purified recombinant human PCSK9 protein (3 μg/ml) (ACROBiosystems, PC9-H5223) or a vehicle control. ..

    Article Title: PCSK9 is a critical regulator of the innate immune response and septic shock outcome
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. Three hours before LPS treatment, cells were treated with purified recombinant human PCSK9 protein (3 μg/ml) (ACROBiosystems, PC9-H5223) or a vehicle control. ..

    Transfection:

    Article Title: Lipopolysaccharide Is Cleared from the Circulation by Hepatocytes via the Low Density Lipoprotein Receptor
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. In separate experiments, 24 hours after siRNA transfection cells were treated with 3 μg/mL purified recombinant human PCSK9 protein (ACROBiosystems PC9-H5223) as described previously [ ]. .. 1mg of LDL isolated from freshly obtained plasma from healthy donors was labeled with 10ug Alexa-488 Fluor LPS ( Salmonella Minnesota from Life Technologies L23356) at 37°C overnight.

    Article Title: Lipopolysaccharide Is Cleared from the Circulation by Hepatocytes via the Low Density Lipoprotein Receptor.
    Article Snippet: Data analysis was performed using Kaluza Analysis 1.3 software (Beckman Coulter). .. In separate experiments, 24 hours after siRNA transfection cells were treated with 3 μg/mL purified recombinant human PCSK9 protein (ACROBiosystems PC9-H5223) as described previously [12]. .. LPS-LDL uptake by HepG2 cells 1mg of LDL isolated from freshly obtained plasma from healthy donors was labeled with 10ug Alexa-488 Fluor LPS (SalmonellaMinnesota from Life Technologies L23356) at 37°C overnight.

    Expressing:

    Article Title: PCSK9 and coronary atherosclerosis progression beyond LDL-cholesterol in coronary artery disease patients.
    Article Snippet: .. HUVEC were stimulated with .25, 1, 2.5 or 5 μg/mL human PCSK9 Protein (ACRObiosystem, Newark, DE, USA) for 4 h to evaluate mRNA expression of VCAM- 1, ICAM- 1, MCP- 1, IL- 6, IL- 8 and for 24 h to assess the protein surface exposure of VCAM- 1 and ICAM- 1. nloaded from https://onlinelibrary.w iley.com /doi/10.1111/eci.70083 by IN A SP - N E PA L , W iley O nline L ibrary on [07/06/2025]. ..

    Article Title: PCSK9 and coronary atherosclerosis progression beyond LDL‐cholesterol in coronary artery disease patients
    Article Snippet: .. HUVEC were stimulated with .25, 1, 2.5 or 5 μg/mL human PCSK9 Protein (ACRObiosystem, Newark, DE, USA) for 4 h to evaluate mRNA expression of VCAM‐1, ICAM‐1, MCP‐1, IL‐6, IL‐8 and for 24 h to assess the protein surface exposure of VCAM‐1 and ICAM‐1. ..



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    Image Search Results


    A synthetic nanobody library is displayed on the surface of Saccharomyces cerevisiae BJ5465 and subjected to antigen-specific enrichment using MACS with recombinant PCSK9. This step selectively enriches yeast clones expressing Nbs with binding activity toward PCSK9. The enriched Nb population is subsequently transferred to a bacterial functional screening system based on functional ligand-binding identification by twin-arginine translocation (Tat)-based recognition of associating proteins (FLI-TRAP). In the FLI-TRAP system, Nb candidates are expressed in the cytoplasm of Escherichia coli as N-terminal fusions to the Tat signal peptide derived from trimethylamine N-oxide reductase (ssTorA), whereas PCSK9 is expressed as a fusion with the reporter enzyme β-lactamase (Bla). Productive Nb–PCSK9 interactions in the cytoplasm result in the formation of a stable protein complex that is specifically recognized by the Tat translocase. The Tat pathway mediates the translocation of fully folded proteins and protein complexes across the inner membrane into the periplasm; consequently, only correctly folded and sufficiently stable Nb–PCSK9–Bla complexes are exported. Periplasmic localization of Bla confers resistance to β-lactam antibiotics, thereby enabling direct in vivo selection of PCSK9-specific Nbs with favorable binding affinity and solubility based on bacterial survival under antibiotic selection pressure.

    Journal: Bio-protocol

    Article Title: Isolation of Antigen-Specific Nanobodies From Synthetic Libraries Using a Protein Selection Strategy That Combines MACS-Based Screening of YSD and FLI-TRAP

    doi: 10.21769/BioProtoc.5570

    Figure Lengend Snippet: A synthetic nanobody library is displayed on the surface of Saccharomyces cerevisiae BJ5465 and subjected to antigen-specific enrichment using MACS with recombinant PCSK9. This step selectively enriches yeast clones expressing Nbs with binding activity toward PCSK9. The enriched Nb population is subsequently transferred to a bacterial functional screening system based on functional ligand-binding identification by twin-arginine translocation (Tat)-based recognition of associating proteins (FLI-TRAP). In the FLI-TRAP system, Nb candidates are expressed in the cytoplasm of Escherichia coli as N-terminal fusions to the Tat signal peptide derived from trimethylamine N-oxide reductase (ssTorA), whereas PCSK9 is expressed as a fusion with the reporter enzyme β-lactamase (Bla). Productive Nb–PCSK9 interactions in the cytoplasm result in the formation of a stable protein complex that is specifically recognized by the Tat translocase. The Tat pathway mediates the translocation of fully folded proteins and protein complexes across the inner membrane into the periplasm; consequently, only correctly folded and sufficiently stable Nb–PCSK9–Bla complexes are exported. Periplasmic localization of Bla confers resistance to β-lactam antibiotics, thereby enabling direct in vivo selection of PCSK9-specific Nbs with favorable binding affinity and solubility based on bacterial survival under antibiotic selection pressure.

    Article Snippet: Recombinant Human PCSK9 protein (His & AVI Tag), biotinylated, HPLC-verified (Sino Biological, catalog number: 29698-H27H-B) 43. xbaI restriction enzyme (Bio-Rad, catalog number: R0145S) 44.

    Techniques: Recombinant, Clone Assay, Expressing, Binding Assay, Activity Assay, Functional Assay, Ligand Binding Assay, Translocation Assay, Derivative Assay, Membrane, In Vivo, Selection, Solubility

    Critical steps in the combined magnetic-activated cell sorting (MACS)-based yeast display and functional ligand-binding identification by twin-arginine translocation (Tat)-based recognition of associating proteins (FLI-TRAP) workflow for screening PCSK9-specific nanobodies (Nbs).

    Journal: Bio-protocol

    Article Title: Isolation of Antigen-Specific Nanobodies From Synthetic Libraries Using a Protein Selection Strategy That Combines MACS-Based Screening of YSD and FLI-TRAP

    doi: 10.21769/BioProtoc.5570

    Figure Lengend Snippet: Critical steps in the combined magnetic-activated cell sorting (MACS)-based yeast display and functional ligand-binding identification by twin-arginine translocation (Tat)-based recognition of associating proteins (FLI-TRAP) workflow for screening PCSK9-specific nanobodies (Nbs).

    Article Snippet: Recombinant Human PCSK9 protein (His & AVI Tag), biotinylated, HPLC-verified (Sino Biological, catalog number: 29698-H27H-B) 43. xbaI restriction enzyme (Bio-Rad, catalog number: R0145S) 44.

    Techniques: FACS, Functional Assay, Ligand Binding Assay, Translocation Assay

    Association between circulating levels of plasma PCSK9 with lipid (Total‐C, LDL‐C and HDL‐C) and inflammatory (IL6, MMP9 and ICAM1) profiles of study patients.

    Journal: European Journal of Clinical Investigation

    Article Title: PCSK9 and coronary atherosclerosis progression beyond LDL‐cholesterol in coronary artery disease patients

    doi: 10.1111/eci.70083

    Figure Lengend Snippet: Association between circulating levels of plasma PCSK9 with lipid (Total‐C, LDL‐C and HDL‐C) and inflammatory (IL6, MMP9 and ICAM1) profiles of study patients.

    Article Snippet: HUVEC were stimulated with .25, 1, 2.5 or 5 μg/mL human PCSK9 Protein (ACRObiosystem, Newark, DE, USA) for 4 h to evaluate mRNA expression of VCAM‐1, ICAM‐1, MCP‐1, IL‐6, IL‐8 and for 24 h to assess the protein surface exposure of VCAM‐1 and ICAM‐1.

    Techniques: Clinical Proteomics

    Association of PCSK9 plasma levels and plaque progression. In univariate and multivariate models, data are depicted as β coefficients with 95% CIs for the annual change in plaque volume from baseline to follow‐up coronary CTA.

    Journal: European Journal of Clinical Investigation

    Article Title: PCSK9 and coronary atherosclerosis progression beyond LDL‐cholesterol in coronary artery disease patients

    doi: 10.1111/eci.70083

    Figure Lengend Snippet: Association of PCSK9 plasma levels and plaque progression. In univariate and multivariate models, data are depicted as β coefficients with 95% CIs for the annual change in plaque volume from baseline to follow‐up coronary CTA.

    Article Snippet: HUVEC were stimulated with .25, 1, 2.5 or 5 μg/mL human PCSK9 Protein (ACRObiosystem, Newark, DE, USA) for 4 h to evaluate mRNA expression of VCAM‐1, ICAM‐1, MCP‐1, IL‐6, IL‐8 and for 24 h to assess the protein surface exposure of VCAM‐1 and ICAM‐1.

    Techniques: Clinical Proteomics

    RNA‐sequencing results (A) Molecular pathway enrichment by STRING linking circulating PCSK9‐related gene dataset with KEGG databases; (B) PCSK9 and MMP9 plasma levels together with annual change of Necrotic Core and Fibrous PVs divided according to presence of PCSK9 gene expression in whole blood; (C) Functional annotation of PCSK9‐related genes according to GO Biological Processes. The 20 most significant biological processes are shown. The GeneRatio indicates how many PCSK9‐related genes included in the analysis were annotated to the specific GO biological process. GO terms were filtered for adjusted p ‐value <.01; (D) Visual combination of genes with related biological processes for enhanced graphical representation of functional categories related to innate immunity.

    Journal: European Journal of Clinical Investigation

    Article Title: PCSK9 and coronary atherosclerosis progression beyond LDL‐cholesterol in coronary artery disease patients

    doi: 10.1111/eci.70083

    Figure Lengend Snippet: RNA‐sequencing results (A) Molecular pathway enrichment by STRING linking circulating PCSK9‐related gene dataset with KEGG databases; (B) PCSK9 and MMP9 plasma levels together with annual change of Necrotic Core and Fibrous PVs divided according to presence of PCSK9 gene expression in whole blood; (C) Functional annotation of PCSK9‐related genes according to GO Biological Processes. The 20 most significant biological processes are shown. The GeneRatio indicates how many PCSK9‐related genes included in the analysis were annotated to the specific GO biological process. GO terms were filtered for adjusted p ‐value <.01; (D) Visual combination of genes with related biological processes for enhanced graphical representation of functional categories related to innate immunity.

    Article Snippet: HUVEC were stimulated with .25, 1, 2.5 or 5 μg/mL human PCSK9 Protein (ACRObiosystem, Newark, DE, USA) for 4 h to evaluate mRNA expression of VCAM‐1, ICAM‐1, MCP‐1, IL‐6, IL‐8 and for 24 h to assess the protein surface exposure of VCAM‐1 and ICAM‐1.

    Techniques: RNA Sequencing, Clinical Proteomics, Gene Expression, Functional Assay

    In vitro study. (A) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for VCAM‐1, ICAM‐1, and RPL13a; (B) ICAM‐1 and VCAM‐1 surface exposure in HUVEC treated with PCSK9 (.25–5 μg/mL) overnight. At the end of the incubation time, VCAM‐1 and ICAM‐1 surface exposure was quantified by EIA. Values are mean ± SD of optical density arbitrary units (AU) at 405 nm; (C) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for MCP‐1, IL6, IL8 and RPL13a.

    Journal: European Journal of Clinical Investigation

    Article Title: PCSK9 and coronary atherosclerosis progression beyond LDL‐cholesterol in coronary artery disease patients

    doi: 10.1111/eci.70083

    Figure Lengend Snippet: In vitro study. (A) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for VCAM‐1, ICAM‐1, and RPL13a; (B) ICAM‐1 and VCAM‐1 surface exposure in HUVEC treated with PCSK9 (.25–5 μg/mL) overnight. At the end of the incubation time, VCAM‐1 and ICAM‐1 surface exposure was quantified by EIA. Values are mean ± SD of optical density arbitrary units (AU) at 405 nm; (C) HUVECs were treated with PCSK9 (.25–5 μg/mL) for 4 h and RT‐PCR was performed with specific primers for MCP‐1, IL6, IL8 and RPL13a.

    Article Snippet: HUVEC were stimulated with .25, 1, 2.5 or 5 μg/mL human PCSK9 Protein (ACRObiosystem, Newark, DE, USA) for 4 h to evaluate mRNA expression of VCAM‐1, ICAM‐1, MCP‐1, IL‐6, IL‐8 and for 24 h to assess the protein surface exposure of VCAM‐1 and ICAM‐1.

    Techniques: In Vitro, Reverse Transcription Polymerase Chain Reaction, Incubation