E3 ubiquitin ligase NEDD4L negatively regulates keratinocyte hyperplasia by promoting GP130 degradation. 2021

Huan Liu, and Wenlong Lin, and Zhiyong Liu, and Yinjing Song, and Hao Cheng, and Huazhang An, and Xiaojian Wang
Institute of Immunology and Bone Marrow Transplantation Center, School of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China.

Psoriasis is mainly characterized by abnormal hyperplasia of keratinocytes and immune cells infiltrating into the dermis and epidermis. Neural precursor cell expressed developmentally downregulated 4-like (NEDD4L) is a highly conserved HECT type E3 ligase that plays an important role in regulating physiological and pathological processes. Here, we identify NEDD4L as a negative regulator of psoriasis. Nedd4l significantly inhibits imiquimod (IMQ)-induced skin hyperplasia, and this effect is attributed to the inhibitory effect of NEDD4L on IL-6/GP130 signaling in keratinocytes. Mechanistically, NEDD4L directly interacts with GP130 and mediates its Lys-27-linked ubiquitination and proteasomal degradation. Moreover, the expression of NEDD4L is downregulated in the epidermis from IMQ-treated mice and psoriasis patients and negatively correlates with the protein levels of GP130 and p-STAT3 in clinical samples. Collectively, we uncover an inhibitory role of NEDD4L in the pathogenesis of psoriasis and suggest a new therapeutic strategy for the treatment of psoriasis.

UI MeSH Term Description Entries
D006965 Hyperplasia An increase in the number of cells in a tissue or organ without tumor formation. It differs from HYPERTROPHY, which is an increase in bulk without an increase in the number of cells. Hyperplasias
D011565 Psoriasis A common genetically determined, chronic, inflammatory skin disease characterized by rounded erythematous, dry, scaling patches. The lesions have a predilection for nails, scalp, genitalia, extensor surfaces, and the lumbosacral region. Accelerated epidermopoiesis is considered to be the fundamental pathologic feature in psoriasis. Palmoplantaris Pustulosis,Pustular Psoriasis of Palms and Soles,Pustulosis Palmaris et Plantaris,Pustulosis of Palms and Soles,Psoriases
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000075702 Nedd4 Ubiquitin Protein Ligases E3 ubiquitin ligases that consist of four WW DOMAINS. They accept UBIQUITIN from E2 UBIQUITIN-CONJUGATING ENZYME as a thioester via their C-terminal HECT domains and transfer it specifically to the 63rd LYSINE residue (Lys-63) of target proteins. NEDD4 targets include many proteins and receptors with important functions for cell growth and homeostasis such as VEGFR-2; FGFR1 TYROSINE KINASE; and ERBB-4 RECEPTOR. They play a critical role in the internalization of these receptors, their degradation by LYSOSOMES, and also function as part of the ESCRT complex in VIRUS RELEASE. Nedd4 Proteins,Neuronal Precursor Cell-Expressed Developmentally Down-Regulated 4 Ligase,Neuronal Precursor Cell Expressed Developmentally Down Regulated 4 Ligase
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D015603 Keratinocytes Epidermal cells which synthesize keratin and undergo characteristic changes as they move upward from the basal layers of the epidermis to the cornified (horny) layer of the skin. Successive stages of differentiation of the keratinocytes forming the epidermal layers are basal cell, spinous or prickle cell, and the granular cell. Keratinocyte
D044767 Ubiquitin-Protein Ligases A diverse class of enzymes that interact with UBIQUITIN-CONJUGATING ENZYMES and ubiquitination-specific protein substrates. Each member of this enzyme group has its own distinct specificity for a substrate and ubiquitin-conjugating enzyme. Ubiquitin-protein ligases exist as both monomeric proteins multiprotein complexes. Ubiquitin-Protein Ligase,E3 Ligase,E3 Ubiquitin Ligase,Ubiquitin Ligase E3,Ubiquitin-Protein Ligase E3,Ligase E3, Ubiquitin,Ligase E3, Ubiquitin-Protein,Ligase, E3,Ligase, E3 Ubiquitin,Ligase, Ubiquitin-Protein,Ligases, Ubiquitin-Protein,Ubiquitin Ligase, E3,Ubiquitin Protein Ligase,Ubiquitin Protein Ligase E3,Ubiquitin Protein Ligases
D050822 Cytokine Receptor gp130 A cytokine receptor that contains extracellular FIBRONECTIN TYPE III DOMAINS which mediate its function through the formation of oligomeric complexes with itself, or with a variety of CYTOKINE RECEPTORS. It does not bind IL-6, but activates JANUS KINASES and STAT3 TRANSCRIPTION FACTOR. Antigens, CD130,CD130 Antigens,IL-6 Family Receptor gp130,IL-6 Receptor Signal Transducer gp130,IL6ST gp130,Interleukin-6 Receptor Subunit Beta,Signal Transducer gp130,Signal-Transducing Receptor gp130,Soluble Glycoprotein 130,Soluble gp130,gp130 IL-6 Family Receptor,gp130 Signal Transducer,gp130 Transducing Protein,sgp130,Glycoprotein 130, Soluble,Interleukin 6 Receptor Subunit Beta,Receptor gp130, Signal-Transducing,Signal Transducer, gp130,Signal Transducing Receptor gp130,gp130 IL 6 Family Receptor,gp130, Cytokine Receptor,gp130, Signal Transducer,gp130, Signal-Transducing Receptor,gp130, Soluble
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus

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