Co‑culture with human fetal epidermal keratinocytes promotes proliferation and migration of human fetal and adult dermal fibroblasts

Wang,Zhe; Liu,Xiaoyu; Zhang,Dianbao; Wang,Xiliang; Zhao,Feng; Shi,Ping; Pang,Xining

doi:10.3892/mmr.2014.2798

Co‑culture with human fetal epidermal keratinocytes promotes proliferation and migration of human fetal and adult dermal fibroblasts

Authors:
- Zhe Wang
- Xiaoyu Liu
- Dianbao Zhang
- Xiliang Wang
- Feng Zhao
- Ping Shi
- Xining Pang
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Affiliations: Department of Stem Cells and Regenerative Medicine, Key Laboratory of Cell Biology, Ministry of Public Health and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, Liaoning 110001, P.R. China, Department of General Practice, The First Affiliated Hospital of China Medical University, Shenyang, Lianoning 110001, P.R. China
Published online on: October 29, 2014 https://doi.org/10.3892/mmr.2014.2798
Pages: 1105-1110

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Abstract

The repair strategy for the healing of skin wounds in fetuses differs from that in adults. Proliferation and migration of dermal fibroblasts are the main mechanisms associated with skin wound healing, as well as the complex interactions between epidermal keratinocytes (KCs) and dermal fibroblasts. In order to investigate the effects of fetal skin epidermal KCs on fetal and adult human dermal fibroblasts, KCs and fibroblasts were isolated from the skin tissue of mid‑gestational human fetuses and adults, and co‑cultured using a Transwell® system. When fetal mid‑gestational KCs were co‑cultured with either fetal or adult dermal fibroblasts, the proliferative and migratory potential of the fibroblasts was significantly enhanced. Furthermore, these phenotypic changes were concomitant with the upregulation of numerous proteins including mouse double minute 2 homolog, cyclin B1, phospho‑cyclin‑dependent kinase 1, phospho‑extracellular signal‑regulated kinase, and phospho‑AKT, along with C‑X‑C chemokine receptor 4, phospho‑p38 mitogen activated protein kinase, matrix metalloproteinase (MMP)‑2 and MMP‑9. Notably, no significant differences were observed between fetal and adult dermal fibroblasts in their responses to fetal mid‑gestational epidermal KCs, indicating that the cells from these two developmental stages respond in a similar manner to co‑culture with KCs.

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