Crosstalk between adipose-derived stem/stromal cells and vocal fold fibroblasts in vitro.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

To explore adipose-derived stem cell/fibroblast interactions as a potential remodeling pathway for vocal fold scar. Fibroblasts and adipose-derived stem/stromal cells (ASCs) were cultured alone and in combination in a cell-contact-independent paracrine system. Analyses of cell proliferation, and the production of hyaluronic acid (HA) and collagen were performed on samples collected on days 1, 3, and 7. Normal fibroblasts (NFs) were isolated bilaterally from the subepithelial lamina propria of two normal ferret vocal folds. Scar fibroblasts (SFs) were isolated from vocal folds that were electrocauterized 2 weeks before harvest. ASCs were isolated from lipoaspirated subcutaneous abdominal fat of two ferrets. A transwell cell-contact-independent cell communication culturing system was used for coculture experiments. Cells were seeded at 50,000/well in both monoculture and coculture experiments. In monoculture, SFs proliferated faster and produced less HA and more collagen than NFs at day 7 (P < .05). In SF/ASC coculture, SF proliferation was diminished and collagen production at day 7 decreased (P < .05). HA production did not differ between monoculture and coculture conditions. Normal and scar-tissue-derived vocal fold fibroblasts maintain phenotypic differences in culture, thus validating this in vitro scar model. In co-culture, contact-independent crosstalk occurs between SFs a

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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