Journal: Advanced healthcare materials

Article Title: Designing Inherently Photodegradable Cell-Adhesive Hydrogels for 3D Cell Culture.

doi: 10.1002/adhm.202100632

Figure Lengend Snippet: Figure 2. A) Live/dead staining of normal human dermal fibroblasts (NHDF) with calcein-AM (green, live cells) and propidium iodide (red, dead cells) embedded in GelMA-free PEGMA/PEGDMA (Gel-N0) and GelMA-containing (Gel-N10) hydrogels on day 1, 7, 14 postencapsulation, followed by imaging with confocal microscopy (Leica TCS SPE, scale bar: 200 µm). B-i) NHDF embedded in Gel-N10 hydrogels on day 1 postencapsulation. Comparison of HepG2 cells encapsulated in (ii) Gel-N10 and (iii) Gel-N0 hydrogels (scale bar: 100 µm). C) Proliferation behavior of encapsulated HepG2 cells in Gel-N10 and Gel-N0 hydrogels over a period of 7 d assessed by PrestoBlue assay (n = 3). D) Toxicity evaluation of Gel-N10 photodegradation products by MTT proliferation assay with HeLa cells after 72 h exposure (n = 3). The concentration of nondiluted degradation products was 53 mg mL−1. Data are presented as mean ± SD and statistically evaluated by (C) Student’s t-test and (D) one-way ANOVA. *, **, *** represent p < 0.05, 0.01, and 0.001, respectively.

Article Snippet: Normal human dermal fibroblasts (NHDF), human liver cancer cells (HepG2), and HeLa cells were purchased from PromoCell GmbH (Heidelberg, Germany).

Techniques: Staining, Imaging, Confocal Microscopy, Comparison, Prestoblue Assay, Proliferation Assay, Concentration Assay

Journal: Scientific Reports

Article Title: Exosomes exert cardioprotection in dystrophin-deficient cardiomyocytes via ERK1/2-p38/MAPK signaling

doi: 10.1038/s41598-018-34879-6

Figure Lengend Snippet: Characterization of isolated exosomes. ( a ) Electron microscopy images reveal WT- and Dys-iCM secreted exosomes display traditional cuplike morphology and are approximately 50 nm. ( b ) NTA of isolated exosomes reveals a range of sizes in particles averaging 148 nm (WT-exo) and 187 (Dys-exo). ( c) Quantitation of NTA results. ( d) Exosomes exhibit exosomal markers CD63 and CD81 as shown by flow cytometry. ( e ) Exo-Check protein array analysis reveals WT- and Dys-exo display exosome protein markers. ( f ) Cardiomyocytes are labeled with NCX1-eGFP and exosomes are stained with PKH26 (red). Exosomes are seen to be taken up at 2 hours.

Article Snippet: Exosomes isolated from a normal human adult dermal fibroblast cell line (Lonza, Basel, Switzerland) were used as an inert control.

Techniques: Isolation, Electron Microscopy, Quantitation Assay, Flow Cytometry, Protein Array, Labeling, Staining

Journal: Scientific Reports

Article Title: Exosomes exert cardioprotection in dystrophin-deficient cardiomyocytes via ERK1/2-p38/MAPK signaling

doi: 10.1038/s41598-018-34879-6

Figure Lengend Snippet: Exosomes protect against stress-induced cell injury in Dys-iCMs. Exposure to WT- and Dys-exos prior to stress ( a , b ) decreased ROS levels. Dermal fibroblast exos did not reduce stress induced ROS levels in Dys1-iCMs as significantly as iCM-derived exos. n = 3/group, *p < 0.05 vehicle stress vs. vehicle no stress, # p < 0.05 exosome exposure vs. vehicle stress.

Article Snippet: Exosomes isolated from a normal human adult dermal fibroblast cell line (Lonza, Basel, Switzerland) were used as an inert control.

Techniques: Derivative Assay

Journal: Cells

Article Title: Impact of Progerin Expression on Adipogenesis in Hutchinson—Gilford Progeria Skin-Derived Precursor Cells

doi: 10.3390/cells10071598

Figure Lengend Snippet: Isolation of SKPs from control and HGPS fibroblasts. ( a ) Panel showing the protocol for SKP isolation. Briefly, fibroblasts were pelleted and treated with HBSS buffer (pH 5.7) for 30 min at 37 °C. Cells were cultured in SKP media containing DMEM low glucose, EGF, FGF, and B27. The flasks were agitated daily, and the spheroids were harvested at day 4 for analysis. ( b ) SKP formation from both control (GMO1651c, GMO5565) and HGPS (HGADFN127, HGADFN003) fibroblasts with 5 and 30% senescence (SNS). ( c , d ) Quantification of the number and the diameter of the spheroids from control and HGPS fibroblast cultures with 5 and 30% SNS at day 4. Values are presented as mean ± SD ( n = 3), not significant (ns), * p < 0.05, ( c , d ) unpaired t -test. HBSS: Hank’s Balanced Salt Solution, DMEM: Dulbecco′s modified Eagle medium, EGF: epidermal growth factor, FGF: fibroblast growth factor, SKPs: skin-derived precursor cells, SNS: senescence.

Article Snippet: The human primary dermal fibroblast cell lines, GMO5565 (3-year-old male), GMO1651 (13-year-old female) and GMO5567A (12-year-old male) were all obtained from the Coriell Institute for Medical Research (Camden, NJ, USA).

Techniques: Isolation, Control, Cell Culture, Modification, Derivative Assay

Journal: Micromachines

Article Title: Experimental Analysis of Laser Micromachining of Microchannels in Common Microfluidic Substrates

doi: 10.3390/mi12020138

Figure Lengend Snippet: Human fibroblast cell adhesion test for 30-min incubation time for laser-machined microchannels on ( a ) glass, ( b ) PDMS, and ( c ) PMMA. ( d ) Quantified cell density on glass, PDMS and PMMA substrate with laser-machined microchannels for 30 min and 60 min incubation time.

Article Snippet: Normal human dermal fibroblasts (HDF00703; LifeLine Cell Technology, https://www.lifelinecelltech.com/ ) were kept in log-phase growth and cultured/passaged as per standard procedure [ ].

Techniques: Incubation