AccScience Publishing / GPD / Online First / DOI: 10.36922/gpd.1848
ORIGINAL RESEARCH ARTICLE

Continuous topical application of microencapsulated recombinant human epidermal growth factor does not promote the progression of established melanoma in animals

Chien-Shan Wu1,2† Jian-Ching Wu3,4† Ching-Min Tseng5,6 Le-Shin Chang7 Chi-Fang Wu8 Yi-Tzu Li8 Yi-Wen Lin8 Ming-Hong Tai3,4,8*
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1 Department of Dermatology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan, Republic of China
2 Department of Dermatology, Pingtung Veterans General Hospital, Pingtung, Taiwan, Republic of China
3 Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, Republic of China
4 Doctoral Degree Program in Marine Biotechnology, Academia Sinica, Taipei, Taiwan, Republic of China
5 Division of Chest Medicine, Department of Internal Medicine, Cheng Hsin General Hospital, Taipei, Taiwan, Republic of China
6 School of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taiwan, Republic of China
7 College of Life Sciences, National Chung Hsing University, Taichung, Taiwan, Republic of China
8 Institute of Biomedical Science, National Sun Yat-sen University, Kaohsiung, Taiwan, Republic of China
Submitted: 16 September 2023 | Accepted: 20 December 2023 | Published: 29 December 2023
© 2023 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ )
Abstract

Microencapsulated epidermal growth factor (EGF) device has been applied topically for the management of several types of wounds to accelerate wound healing and prevent scar formation. However, it remains unclear whether such EGF device induced neoplastic transformation in the skin. In this study, we exploited a well-established murine B16-F10 melanoma model, coupled with MTT viability and colony formation assays, to investigate the influence of microencapsulated recombinant EGF (Me-EGF; brand name NewEpi®) and its ingredients on the tumorigenicity of skin cancer cells in vitro and in vivo. The results indicated that Me-EGF did not stimulate the viability nor the anchorage-dependent growth of B16-F10 melanoma cells. Western blot analysis showed that Me-EGF treatment increased the total and phosphorylated EGFR expression without affecting the HER2 expression in B16-F10 melanoma cells. In mice bearing established B16-F10 melanoma, continuous application of Me-EGF for 14 days did not enhance the melanoma tumor burden compared with control groups. Immunohistochemical analysis also revealed the similar expression of proliferative index Ki-67 between Me-EGF-treated melanoma and other groups. Altogether, these results suggest that the application of Me-EGF device did not promote the oncogenic potential of B16-F10 melanoma in vitro and in vivo.

Keywords
Melanoma
Epidermal growth factor
Microencapsulation
Me-EGF
Funding
Kaohsiung Veterans General Hospital, Taiwan, Republic of China
Conflict of interest
The authors have declared no conflicts of interest.
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