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      Epidermal Growth Factor Attenuated the Expression of Inflammatory Cytokines in Human Epidermal Keratinocyte Exposed to Propionibacterium acnes.

      Annals of Dermatology
      Korean Dermatological Association and The Korean Society for Investigative Dermatology
      Epidermal growth factor, Acne vulgaris, Toll-like receptor 2, Propionibacterium acnes

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          Abstract

          While the beneficial effects of topical epidermal growth factor (EGF) on wound healing have been repeatedly reported, there are few reports about the effects of EGF on inflammatory skin diseases including acne.

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          Most cited references33

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          Novel anticancer targets: revisiting ERBB2 and discovering ERBB3.

          Aberrant receptor expression or functioning of the epidermal growth factor receptor (Erbb) family plays a crucial part in the development and evolution of cancer. Inhibiting the signalling activity of individual receptors in this family has advanced the treatment of a range of human cancers. In this Review we re-evaluate the role of two important family members, ERBB2 (also known as HER2) and ERBB3 (also known as HER3), and explore the mechanisms of action and preclinical and clinical data for new therapies that target signalling through these pivotal receptors. These new therapies include tyrosine kinase inhibitors, antibody-chemotherapy conjugates, heat-shock protein inhibitors and antibodies that interfere with the formation of ERBB2-ERBB3 dimers.
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            Status of epidermal growth factor receptor antagonists in the biology and treatment of cancer.

            The epidermal growth factor receptor (EGFR) is a tyrosine kinase receptor of the ErbB family that is abnormally activated in many epithelial tumors. Receptor activation leads to recruitment and phosphorylation of several downstream intracellular substrates, leading to mitogenic signaling and other tumor-promoting cellular activities. In human tumors, receptor overexpression correlates with a more aggressive clinical course. Taken together, these observations indicate that the EGFR is a promising target for cancer therapy. Monoclonal antibodies directed at the ligand-binding extracellular domain and low-molecular weight inhibitors of the receptor's tyrosine kinase are currently in advanced stages of clinical development. These agents prevent ligand-induced receptor activation and downstream signaling, which results in cell cycle arrest, promotion of apoptosis, and inhibition of angiogenesis. They also enhance the antitumor effects of chemotherapy and radiation therapy. In patients, anti-EGFR agents can be given safely at doses that fully inhibit receptor signaling, and single-agent activity has been observed against a variety of tumor types, including colon carcinoma, non-small-cell lung cancer, head and neck cancer, ovarian carcinoma, and renal cell carcinoma. Although antitumor activity is significant, responses have been seen in only a minority of the patients treated. In some clinical trials, anti-EGFR agents enhanced the effects of conventional chemotherapy and radiation therapy. Ongoing research efforts are directed at the selection of patients with EGFR-dependent tumors, identification of the differences among the various classes of agents, and new clinical development strategies.
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              Recognition and signaling by toll-like receptors.

              Toll-like receptors (TLRs) are transmembrane proteins that detect invading pathogens by binding conserved, microbially derived molecules and that induce signaling cascades for proinflammatory gene expression. A critical component of the innate immune system, TLRs utilize leucine-rich-repeat motifs for ligand binding and a shared cytoplasmic domain to recruit the adaptors MyD88, TRIF, TIRAP, and/or TRAM for downstream signaling. Despite significant domain conservation, TLRs induce gene programs that lead not only to the robust production of general proinflammatory mediators but also to the production of unique effectors, which provide pathogen-tailored immune responses. Here we review the mechanisms by which TLRs recognize pathogens and induce distinct signaling cascades.
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                Author and article information

                Journal
                29386833
                5762477
                10.5021/ad.2018.30.1.54

                Epidermal growth factor,Acne vulgaris,Toll-like receptor 2,Propionibacterium acnes

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