Journal: Cellular and Molecular Bioengineering

Article Title: Remote-Controlled Gene Delivery in Coaxial 3D-Bioprinted Constructs using Ultrasound-Responsive Bioinks

doi: 10.1007/s12195-024-00818-x

Figure Lengend Snippet: Effect of varying the number of ultrasound pulses on ultrasound-controlled osteoblast cellular transfection in coaxially-bioprinted constructs. A Coaxially-bioprinted osteoblast-laden (hFOB 1.19) 4% alginate bioink containing GFP-coupled microbubbles before ultrasound, 0 hr post-ultrasound, and 48 hr post-ultrasound with varying ultrasound exposure (10, 40, or 80 pulses). B Number of transfected cells in bioprinted constructs at 48 hr post-ultrasound for varying numbers of ultrasound pulses (*p < 0.05, ****p < 0.0001, one-way ANOVA, Tukey’s multiple comparisons test, error bars denote standard deviation). C Diameter of zone containing transfected cells at 48 hr post-ultrasound for varying numbers of ultrasound pulses (one-way ANOVA, Tukey’s multiple comparisons test, error bars denote standard deviation)

Article Snippet: They were then suspended in complete media containing Human Osteoblast Media (Cell Applications, Inc.), 10% FBS (HyClone Characterized Fetal Bovine Serum CA Origin, Cytiva), and 1% pen-strep (penicillin-streptomycin, 10,000 μg/mL, Gibco) then concentrated to 3.85 × 10 7 cell/mL in complete media.

Techniques: Transfection, Construct, Standard Deviation

Journal: PLOS ONE

Article Title: Evaluation of decellularization process for developing osteogenic bovine cancellous bone scaffolds in-vitro

doi: 10.1371/journal.pone.0283922

Figure Lengend Snippet: Bar charts indicate comparison between DCC scaffold vs DCC scaffold + cells and DMB scaffolds vs DMB scaffold + cells by direct method (a). Bar charts indicate comparison between DMB conditioned media (CM) and DCC conditioned media (CM) vs complete culture media (Control) by indirect method (b). *p<0.05 is indicated. n = 4; CM: conditioned media. (c). HOB cells seeded on DMB and DCC scaffolds showing optimum cell attachment by DAPI staining. (i & iii) DMB scaffolds and (ii & iv) DCC scaffolds; images were captured by fluorescence and confocal microscopy, respectively. Scanning electron micrograph of HOB cells seeded onto DMB (d) and DCC (e) scaffolds. The osteoblast shows a healthy morphology residing on the ECM with evidence of filopodia spread (red arrows).

Article Snippet: Human osteoblast cells (HOB) used for biocompatibility evaluation were obtained from Addexbio (Cat no: P0004010; USA).

Techniques: Comparison, Control, Cell Attachment Assay, Staining, Fluorescence, Confocal Microscopy

Journal: PLOS ONE

Article Title: Evaluation of decellularization process for developing osteogenic bovine cancellous bone scaffolds in-vitro

doi: 10.1371/journal.pone.0283922

Figure Lengend Snippet: Photomicrographs of HOB cells stained with Alizarin Red S. HOB cells showed increased mineralized nodules in osteogenic medium (OS + ) compared to cells without supplements (OS - ). More significant mineralization was seen by day 14 (a). Quantification of alizarin Red S stained mineralized nodules in human osteoblast cells seeded on DMB and DCC scaffolds grown in the presence or absence of osteogenic induction media at days 7 and 14 in comparison to cells alone is shown; p<0.001 is indicated). The absorbance of the extracted Alizarin dye was measured at 405 nm. Data presented as mean ± SEM (n = 6) (b). Quantification of Alizarin Red S staining in osteoblast cell-seeded DMB and DCC scaffolds on day 14 in the presence and absence of osteogenic supplements. Data presented as mean ± SEM (n = 4) (c); p<0.001 is indicated.

Article Snippet: Human osteoblast cells (HOB) used for biocompatibility evaluation were obtained from Addexbio (Cat no: P0004010; USA).

Techniques: Staining, Comparison