Effects of Insulin-like Growth Factor 1 on the Maintenance of Cell Viability and Osteogenic Differentiation of Gingiva-Derived Mesenchymal Stem Cell Spheroids

Overview

Journal Medicina (Kaunas)

Publisher MDPI

Date 2025 Jan 25

PMID 39859058

Authors

Somyeong Hwa

Hyun-Jin Lee

Youngkyung Ko

Jun-Beom Park

Affiliations

Soon will be listed here.

Abstract

Insulin-like growth factor-1 (IGF-1) plays a vital role in various cellular processes, including those involving stem cells. This study evaluated the effects of IGF-1 on cell survival, osteogenic differentiation, and mRNA expression in gingiva-derived mesenchymal stem cell spheroids. Using concave microwells, spheroids were generated in the presence of IGF-1 at concentrations of 0, 10, and 100 ng/mL. Cellular vitality was qualitatively assessed using microscopy, while a water-soluble tetrazolium salt-based assay kit quantified cellular viability. Osteogenic differentiation was evaluated via alkaline phosphatase activity and an anthraquinone dye test to measure calcium deposition. Additionally, quantitative polymerase chain reaction (qPCR) analysis was performed to determine the expression of RUNX2 and COL1A1. By day 1, the stem cell spheroids had successfully formed, and their morphology remained stable over the following 7 days. The IGF-1 concentrations tested showed no significant differences in cell viability. Similarly, alkaline phosphatase activity on day 7 revealed no observable changes. However, on day 7, the incorporation of IGF-1 led to an increase in Alizarin Red staining, indicative of enhanced calcium deposition. Notably, an IGF-1 concentration of 100 ng/mL significantly upregulated the expression of COL1A1. These findings suggest that IGF-1 supports the maintenance of cell viability and promotes the expression of COL1A1 in gingiva-derived mesenchymal stem cell spheroids, highlighting its potential role in enhancing osteogenic differentiation. Future research should include long-term studies to evaluate the sustainability of IGF-1-induced effects on stem cell spheroids.

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