Journal: Journal of Biological Chemistry

Article Title: Matrix Metalloproteinase Mmp-1a Is Dispensable for Normal Growth and Fertility in Mice and Promotes Lung Cancer Progression by Modulating Inflammatory Responses

doi: 10.1074/jbc.m112.439893

Figure Lengend Snippet: FIGURE 4. A, difference gel electrophoresis analysis of lung tissue from urethane-treated mice. Overlaying green and red image highlights differences between wild-type and Mmp1a/ mice. Yellow indicates no change, red spots indicate more abundance in knock-out mice, and green spots more abundance in wild-type mice. Selected proteins are labeled with white circles, and bidimensional validation analysis is shown in supplemental Fig. 1. All differential analyzed spotsarelistedinsupplementalTable1.B,Westernblotanalysisextendedtootherurethane-treatedlittermatesshowingtheincreasedCHI3L3andRAGElevels in wild-type and knock-out mice, respectively, as well as the differential processing of CHI3L3 in wild-type lungs no present in the mutant lungs. Load control is shown at the bottom of each panel. C, Western blot analysis of the RAGE ligand S100A8 showing accumulation of different isoforms of this chemokine in lung from knock-out mice. D, in vitro cleavage assays with human MMP-1. Purified S100A8, S100A9, and CHI3L3 (1 g) were incubated with 100 ng of activated MMP-1, which resulted in specific cleavage of S100A8 (*), but not S100A9 and CHI3L3. Recombinant MMP-2 was used as a positive control of S100A8 cleavage.

Article Snippet: Enzymatic Assays—For in vitro proteolysis assays, we used recombinant S100A8 and S100A9 kindly provided by Dr. Philippe Tessier and recombinant CHI3L3 and MMP-1 from R&D Systems.

Techniques: Nucleic Acid Electrophoresis, Knock-Out, Labeling, Biomarker Discovery, Mutagenesis, Control, Western Blot, In Vitro, Purification, Incubation, Recombinant, Positive Control

Journal: Journal of Translational Medicine

Article Title: Combining patient proteomics and in vitro cardiomyocyte phenotype testing to identify potential mediators of heart failure with preserved ejection fraction

doi: 10.1186/s12967-016-0774-3

Figure Lengend Snippet: Proteins preferential to either HFpEF or control groups

Article Snippet: Recombinant S100A8 was purchased from Creative BioMart (Shirley, NY).

Techniques: Control, Sequencing, Ubiquitin Proteomics

Journal: Journal of Translational Medicine

Article Title: Combining patient proteomics and in vitro cardiomyocyte phenotype testing to identify potential mediators of heart failure with preserved ejection fraction

doi: 10.1186/s12967-016-0774-3

Figure Lengend Snippet: Representative MS/MS scan for S100A8 peptide sequence ALNSIIDVYHK. Raw m/z spectral images with peak assignments and b and y ion lists along with a representation of peptide sequencing by tandem mass spectrometry

Article Snippet: Recombinant S100A8 was purchased from Creative BioMart (Shirley, NY).

Techniques: Tandem Mass Spectroscopy, Sequencing, Mass Spectrometry

Journal: Journal of Translational Medicine

Article Title: Combining patient proteomics and in vitro cardiomyocyte phenotype testing to identify potential mediators of heart failure with preserved ejection fraction

doi: 10.1186/s12967-016-0774-3

Figure Lengend Snippet: Plasma levels of S100A8 in control vs. HFpEF groups. a S100A8 is found in increased levels in the plasma of subjects with HFpEF vs. control subjects as detected by ELISA. The MCW columns include the control (n = 7) and HFpEF (n = 9) from the discovery cohort and the NWU colums include the control (n = 18) and HFpEF (n = 25) samples from the validation cohort. *p < 0.006 vs MCW Control. # p < 0. 002 vs NWU Control

Article Snippet: Recombinant S100A8 was purchased from Creative BioMart (Shirley, NY).

Techniques: Clinical Proteomics, Control, Enzyme-linked Immunosorbent Assay, Biomarker Discovery

Journal: Journal of Translational Medicine

Article Title: Combining patient proteomics and in vitro cardiomyocyte phenotype testing to identify potential mediators of heart failure with preserved ejection fraction

doi: 10.1186/s12967-016-0774-3

Figure Lengend Snippet: Overview of primary and secondary screening methods to identify potential mediators of HFpEF. a Platelet proteomes were subject to mass spectral analysis and novel proteins were identified. b Human cardiomyocytes derived from induced pluripotent stem cells were used to determine whether proteins that were identified in a had direct effects on cardiomyocytes function in vitro. Purified recombinant protein S100A8 was tested in this assay

Article Snippet: Recombinant S100A8 was purchased from Creative BioMart (Shirley, NY).

Techniques: Derivative Assay, In Vitro, Purification, Recombinant

Journal: Journal of Translational Medicine

Article Title: Combining patient proteomics and in vitro cardiomyocyte phenotype testing to identify potential mediators of heart failure with preserved ejection fraction

doi: 10.1186/s12967-016-0774-3

Figure Lengend Snippet: S100A8-mediated effects on human iPSC-derived cardiomyocytes. a Shows example action potentials recorded from rS100A8 treated iPSC derived human cardiomyocytes. The addition of rS100A8 to the buffer extended the period between action potentials. This period is phase 4; the diastolic membrane potential between action potentials. b rS100A8 exacerbates the arrhythmic tendencies of human cardiomyocytes. c Spontaneous Ca 2+ transients recorded from human cardiomyocytes treated with rS100A8 as indicated by the blue line. rS100A8 significantly delayed the recovery of depolarization. Wash out of rS100A8 reversed these effects

Article Snippet: Recombinant S100A8 was purchased from Creative BioMart (Shirley, NY).

Techniques: Derivative Assay, Membrane

Journal: Molecular biomedicine

Article Title: Enteric glial cells aggravate the intestinal epithelial barrier damage by secreting S100β under high-altitude conditions.

doi: 10.1186/s43556-023-00143-1

Figure Lengend Snippet: Fig. 1 The levels of EGC biomarkers are significantly increased by HA conditions. a Serum concentrations of GFAP, S100β, GDNF, and NGF in control and HA group participants. b Relative mRNA expression per β-Actin of GFAP, S100β, GDNF, and NGF-β in the small intestines of control and HA group mice. c Immunohistochemical staining of the small intestine for GFAP and S100β. (n = 6–8 mice/group), Mean ± SD represent the findings. ****p < 0.0001, **p < 0.01, *p < 0.05. MOD—Mean Optical Density, IHC - immunohistochemistry

Article Snippet: To explore the role of S100β, MODE-K cells were treated with 5 μM recombinant mouse S100β (Solarbio, P00208) and subjected to hypoxia for 12 h, and control MODE-K cells were subjected to hypoxia alone.

Techniques: Control, Expressing, Immunohistochemical staining, Staining, Immunohistochemistry

Journal: Molecular biomedicine

Article Title: Enteric glial cells aggravate the intestinal epithelial barrier damage by secreting S100β under high-altitude conditions.

doi: 10.1186/s43556-023-00143-1

Figure Lengend Snippet: Fig. 5 S100β mediates the effect of EGCs to aggravate epithelial cell injury under hypoxic conditions. a Effect of exogenous S100β on MODE-K epithelial cell proliferation under hypoxic conditions. b Representative flow cytometric plots of MODE-K cell apoptosis. Annexin V and PI were used to label the cells before they were analyzed by flow cytometry. The figures show what proportion of the total occur in each quadrant. c Statistical analysis of the frequency percentage in late-phase apoptosis. d Relative mRNA expression per β-Actin of IL-6, -10, -1α, -1β, and TNF-α, claudin-1, occludin, and ZO-1. e Occludin and ZO-1 protein expression. Representation of findings and significance as previously stated

Article Snippet: To explore the role of S100β, MODE-K cells were treated with 5 μM recombinant mouse S100β (Solarbio, P00208) and subjected to hypoxia for 12 h, and control MODE-K cells were subjected to hypoxia alone.

Techniques: Flow Cytometry, Expressing