Journal: EMBO Reports

Article Title: Novel role of bone morphogenetic protein 9 in innate host responses to HCMV infection

doi: 10.1038/s44319-024-00072-2

Figure Lengend Snippet: ( A ) Relative transcript levels of type I (ALK1, ALK2, ALK3, ALK6) and type II (BMPR2, ACVR2A, ACVR2B) BMP receptors in primary human foreskin fibroblasts (HFF-1) were determined by RT-qPCR. ( B ) Schematic representation of the workflow. After 2 h of serum starvation, HFF-1 were stimulated with IFNβ (5 ng/ml), BMP4 (18 nM), BMP6 (18 nM), BMP9 (3 nM), BMP15 (18 nM), or Activin B (4 nM), followed by either immunoblot analysis 1 h post stimulation or RNA extraction from cell lysates and RT-qPCR 6 h post stimulation. GAPDH transcript levels were used for normalization. ( C ) Immunoblot analysis of HFF-1 upon stimulation to determine phosphorylation levels of respective signaling components. ( D ) Transcript levels of the BMP-responsive genes Id1 and Id3 upon stimulation with the indicated ligands. ( E ) Transcript levels of the ISGs Isg15 , Irf9 , Ifi6 , and Stat2 upon stimulation with the indicated ligands. Data information: ( A , B ) The Experiment was performed two independent times, one representative is shown. ( D , E) The experiment was performed three independent times, one representative is shown. Data are shown as mean ± SD. .

Article Snippet: Recombinant human BMP4 (#314-BP-010), human BMP6 (#507-BP-020), human BMP9 (#3209-BP-010), human BMP15 (#5096-BM-005), human Activin B (#659-AB-005), and the human/mouse anti-BMP9 antibody (#AF3209) were purchased from R&D Systems.

Techniques: Quantitative RT-PCR, Western Blot, RNA Extraction

Journal: EMBO Reports

Article Title: Novel role of bone morphogenetic protein 9 in innate host responses to HCMV infection

doi: 10.1038/s44319-024-00072-2

Figure Lengend Snippet: ( A ) Presence of type I (ALK1, ALK2, ALK3) and type II (BMPR2) receptors in HFF-1 and 293T was verified by immunoblotting with the respective antibodies. Detection of GAPDH protein served as loading control. ( B ) Relative transcript levels of type I (ALK1, ALK2, ALK3, ALK6) and type II (BMPR2, ACVR2A, ACVR2B) BMP receptors in 293T were determined by RT-qPCR. ( C ) 293T were co-transfected with expression plasmids for the BRE-Luciferase reporter and a Renilla luciferase normalization control (EF1α-Renilla). 24 h post transfection, 293T were either stimulated with BMP9 (3 nM), or BMP9 (3 nM) incubated for 15 min at RT with an α-BMP9 antibody (1 µg/ml or 5 µg/ml) for 16 h, followed by a dual-luciferase assay readout. ( D ) 293T were co-transfected as in ( B ). 24 h post transfection, 293 T were either stimulated with BMP4 (18 nM), BMP6 (18 nM), BMP9 (3 nM), BMP15 (18 nM), or Activin B (4 nM), or with the ligands incubated for 15 min at RT with an α-BMP9 antibody (1 µg/ml) for 16 h, followed by a dual-luciferase assay readout. ( E ) HFF-1 were either mock, DMSO, Ruxolitinib (10 µM) or DMH1 (10 µM) treated for 2 h, followed by stimulation with IFNβ (5 ng/ml) or BMP4 (18 nM) for 2 h. Cells were lysed and lysates were subjected to immunoblot analysis with p-STAT1, STAT1, p-SMAD1/5/9, SMAD1, p-p38, p38, p-p44/42, p44/42, and Calnexin-specific antibodies. Data information: ( A – E ) Experiments were performed two independent times, one representative is shown. Luciferase fold induction was calculated by dividing Renilla-normalized values from stimulated samples by the corresponding values from unstimulated samples.

Article Snippet: Recombinant human BMP4 (#314-BP-010), human BMP6 (#507-BP-020), human BMP9 (#3209-BP-010), human BMP15 (#5096-BM-005), human Activin B (#659-AB-005), and the human/mouse anti-BMP9 antibody (#AF3209) were purchased from R&D Systems.

Techniques: Western Blot, Control, Quantitative RT-PCR, Transfection, Expressing, Luciferase, Incubation

Journal: EMBO Reports

Article Title: Novel role of bone morphogenetic protein 9 in innate host responses to HCMV infection

doi: 10.1038/s44319-024-00072-2

Figure Lengend Snippet: ( A ) Schematic representation of the workflow. After 2 h of serum starvation, HFF-1 were stimulated for 6 h with BMP4 (18 nM), BMP6 (18 nM), BMP9 (3 nM), BMP15 (18 nM), or Activin B (4 nM), or co-stimulated with IFNβ (5 ng/ml), followed by HCMV infection (MOI 0.5) for 16 h. Cells were fixed, nuclei were stained and cells were labeled for HCMV IE1 + cells as a readout for infection. ( B ) HCMV IE1 + cells normalized to total cell numbers and the untreated control (white column) in BMP/Activin stimulated samples (left panel) or with IFNβ co-stimulated samples (right panel). ( C ) HCMV IE1 + cells normalized to total cell numbers in cells pre-stimulated with either low (0.25 nM) or high (3 nM) concentrations of BMP9 (green symbols) or IFNβ co-stimulated with low and high concentrations of BMP9 (beige symbols). ( D ) HFF-1 were infected by centrifugal enhancement with HCMV WT (MOI 0.5) and supernatants of infected cells were collected in 6 h increments. 293T were co-transfected with expression plasmids for the BRE-Luciferase reporter and a Renilla luciferase normalization control. Twenty-four hours post transfection, 293T were either stimulated with supernatants from HCMV-infected cells, or supernatants from HCMV-infected cells incubated for 15 min at RT with an α-BMP9 antibody, for 16 h, followed by a dual-luciferase assay readout. Luciferase fold induction was calculated by dividing Renilla-normalized values from stimulated samples by the corresponding values from unstimulated samples. Data information: ( B ) Experiment was performed three independent times, one representative is shown. ( C , D ) Data are combined from two independent experiments. Student’s t test (unpaired, two-tailed), n.s. not significant, * P < 0.05, ** P < 0.01, *** P < 0.001. Data are shown as mean ± SD. .

Article Snippet: Recombinant human BMP4 (#314-BP-010), human BMP6 (#507-BP-020), human BMP9 (#3209-BP-010), human BMP15 (#5096-BM-005), human Activin B (#659-AB-005), and the human/mouse anti-BMP9 antibody (#AF3209) were purchased from R&D Systems.

Techniques: Infection, Staining, Labeling, Control, Transfection, Expressing, Luciferase, Incubation, Two Tailed Test