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Evid Based Complement Alternat Med. 2017;2017:5821706. doi: 10.1155/2017/5821706. Epub 2017 May 23.

Periplaneta americana Extracts Promote Skin Wound Healing via Nuclear Factor Kappa B Canonical Pathway and Extracellular Signal-Regulated Kinase Signaling.

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College of Pharmacy and Bioengineering, Chengdu University, Chengdu, Sichuan 610106, China.
State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Departments of Head and Neck and Mammary Gland Oncology and Medical Oncology, Cancer Center and State Key Laboratory of Biotherapy, Laboratory of Molecular Diagnosis of Cancer, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan 610106, China.


Periplaneta americana extracts (PAEs) exhibit wound healing properties. However, the underlying molecular mechanisms are not well understood. Here, we treated human skin fibroblasts (HSF) with PAE and the proliferation was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The wound healing and transwell migration assays were used to detect cell migration. Nuclear factor kappa B (NF-κB) and extracellular signal-regulated kinase (ERK) pathways were analyzed by Western blot (WB). Immunofluorescence staining was used to detect the key molecular localization in the cells. The results showed that PAE enhanced the proliferation and migration of HSF cells. The expression and activation of key proteins such as RelA and p-ERK were increased in NF-κB and ERK pathways followed by nuclear translocation. In vivo, both WB and immunohistochemical (IHC) staining showed that PAE enhanced p-IκBα and p-ERK activation and the nuclear translocation of RelA. Our study suggests that the protective function of PAE is mediated via enhanced NF-κB and ERK signaling.

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