Endothelial Programmed Death-1 Ligand 1 (PD-L1) Regulates CD8 + T-Cell–Mediated Injury in the Heart

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Endothelial programmed death-1 ligand 1 (PD-L1) regulates CD8+ T-cell mediated injury in the heart.

BACKGROUND PD-L1 and PD-L2 are ligands for the inhibitory receptor programmed death-1 (PD-1), which is an important regulator of immune responses. PD-L1 is induced on cardiac endothelial cells under inflammatory conditions, but little is known about its role in regulating immune injury in the heart. METHODS AND RESULTS Cytotoxic T-lymphocyte-mediated myocarditis was induced in mice, and the i...

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Angiosarcomas are rare malignant endothelial-cell tumors of vascular or lymphatic origin, and are among the most aggressive subtypes of soft-tissue sarcomas. The prognosis is poor and treatment is challenging in many cases. PD-1/PD-L1 pathway plays a critical role in immune escape of tumor cells. Recent studies described that PD-L1 is widely expressed in various types of cancer, providing the b...

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Protective Role of Programmed Death 1 Ligand 1 (PD-L1)in Nonobese Diabetic Mice

OBJECTIVE Coinhibitory signals mediated via programmed death 1 (PD-1) receptor play a critical role in downregulating immune responses and in maintaining peripheral tolerance. Programmed death 1 ligand 1 (PD-L1), the interacting ligand for PD-1, widely expressed in many cell types, acts as a tissue-specific negative regulator of pathogenic T-cell responses. We investigated the protective potent...

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Human corneal endothelial cells expressing programmed death-ligand 1 (PD-L1) suppress PD-1+ T helper 1 cells by a contact-dependent mechanism.

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ژورنال

عنوان ژورنال: Circulation

سال: 2007

ISSN: 0009-7322,1524-4539

DOI: 10.1161/circulationaha.107.709360