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Citrullination at the N-terminal region of MDM2 by the PADI4 enzyme.
Protein Sci
February 2025
Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, Zaragoza, Spain.
PADI4 is one of the human isoforms of a family of enzymes involved in the conversion of arginine to citrulline. MDM2 is an E3 ubiquitin ligase that is critical for degradation of the tumor suppressor gene p53. We have previously shown that there is an interaction between MDM2 and PADI4 in cellulo, and that such interaction occurs through the N-terminal region of MDM2, N-MDM2, and in particular through residues Thr26, Val28, Phe91, and Lys98.
View Article and Find Full Text PDFC5a/C5aR regulates Th1/Th2 imbalance in sepsis-associated lung injury by promoting neutrophil activation to increase PAD4 expression.
Ann Med
December 2025
Department of Emergency, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Objective: Multi-organ failure frequently complicates sepsis, with lungs being the primary target. T helper (Th) cell activation and phenotypic imbalance among them contribute significantly to sepsis-associated lung injury. Additionally, the complement system could regulate the polarized phenotype of T lymphocytes.
View Article and Find Full Text PDFNFE2-driven neutrophil polarization promotes pancreatic cancer liver metastasis progression.
Cell Rep
January 2025
Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China; Key Laboratory of Research in Pancreatic Tumor, Chinese Academy of Medical Sciences, Beijing 100730, China; National Infrastructures for Translational Medicine, Peking Union Medical College Hospital, Beijing 100730, China; State Key Laboratory of Complex, Severe, and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China. Electronic address:
Pancreatic cancer liver metastasis is an important factor leading to dismal prognoses. The details of adaptive immune remodeling in liver metastasis, especially the role of neutrophils, remain elusive. Here, combined single-cell sequencing with spatial transcriptomics results revealed that liver metastases exhibit more aggressive transcriptional characteristics and higher levels of immunosuppression compared with the primary tumor.
View Article and Find Full Text PDFThe role of Anti-PAD4, Anti-CarP, and Anti-RA33 antibodies combined with RF and ACPA in predicting abatacept response in rheumatoid arthritis.
Arthritis Res Ther
January 2025
Department of Medical Science and Public Health, Rheumatology Unit, University of Cagliari, Azienda Ospedaliero Universitaria di Cagliari, SS 554 Monserrato (CA), Bivio Sestu, Monserrato, 09042, Italy.
Objectives: To explore the role of newly emerging autoantibodies (AAbs) - peptidyl-arginine deiminase 4 (aPAD4), carbamylated proteins (aCarP), and anti-RA33 (aRA33) - alongside the traditionally assessed rheumatoid factor (RF) and anti-citrullinated protein antibodies (ACPA), in predicting the response to abatacept (ABT) and its retention rate in rheumatoid arthritis (RA) patients.
Methods: Data from 121 consecutive ABT-treated RA patients were recorded. The RF and ACPA status were retrospectively assessed by reviewing the patients' clinical records.
Glycyrrhizic acid reduces neutrophil extracellular trap formation to ameliorate colitis-associated colorectal cancer by inhibiting peptidylarginine deiminase 4.
J Ethnopharmacol
January 2025
State Key Laboratory of Traditional Chinese Medicine Syndrome, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Chinese Medicine Guangdong Laboratory, Guangdong, 519000, China. Electronic address:
Ethnopharmacological Relevance: In traditional Chinese medicine, the radices of Glycyrrhiza uralensis Fisch., known as liquorice, have been used for relieving cough, alleviating pain and harmonizing the actions of all medicinals in a formula. Glycyrrhizic acid (GA), a natural compound derived from licorice, exhibits notable anti-inflammatory properties.
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