Expression of killer cell immunoglobulin-like receptors (KIRs) by natural killer cells during acute CMV infection after kidney transplantation

2014 ◽  
Vol 31 (3) ◽  
pp. 157-164 ◽  
Author(s):  
Casimir de Rham ◽  
Karine Hadaya ◽  
Cédric Bandelier ◽  
Sylvie Ferrari-Lacraz ◽  
Jean Villard
2020 ◽  
Vol 21 (12) ◽  
pp. 1176-1185 ◽  
Author(s):  
Tuğcan Korak ◽  
Emel Ergül ◽  
Ali Sazci

Background: In the last decade, there have been accumulating data that the use of medicinal plants could bring additional benefits to the supportive treatment of various diseases. Nigella sativa (N. sativa, family Ranunculaceae) is one of these plants that has attracted considerable interest. The extracts and seeds of N. sativa and its active component thymoquinone have been studied extensively and the results suggest that N. sativa might carry some therapeutic potential for many diseases, including cancer. Methods: The selection criteria for references were applied through Pubmed with “N. sativa and cancer”, “N. sativa and breast cancer”, “N. sativa and metastasis”, “N. sativa and cytotoxicity of natural killer cells”. The pathway analysis was performed using the PANTHER tool by using five randomly selected N. sativa affected genes (Cyclin D1, P53, p21 protein (Cdc42/Rac) activated kinase 1 (PAK1), B-cell lymphoma 2 (Bcl-2) and vascular endothelial growth factor (VEGF)) in order to elucidate further potentially affected signaling pathways. Results: The aim of this review was to summarize studies regarding the effects of N. sativa in cancer generally, with a focus on breast cancer, its anti-metastatic effects, and how N. sativa modulates the cytotoxicity of Natural Killer cells that play a crucial role in tumor surveillance. Conclusion: In summary, the data suggest that N. sativa might be used for its anti-cancer and antimetastatic properties and as an immune system activator against cancer.


2020 ◽  
Vol 11 ◽  
Author(s):  
Paola Pontrelli ◽  
Federica Rascio ◽  
Giuseppe Castellano ◽  
Giuseppe Grandaliano ◽  
Loreto Gesualdo ◽  
...  

Author(s):  
Alejandra Pera ◽  
María Luisa Pita-López ◽  
Carmen Campos ◽  
Fakhri Hassouneh ◽  
Nelson Lopez-Sejas ◽  
...  

2000 ◽  
Vol 99 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Christopher A. O'CALLAGHAN

HLA-E (human leucocyte antigen-E) is a conserved class I major histocompatibility molecule which has only limited polymorphism. It binds to the leader peptide derived from the polymorphic classical major histocompatibility molecules HLA-A, HLA-B and HLA-C. This peptide binding is highly specific and stabilizes the HLA-E protein, allowing it to migrate to the cell surface. A functioning TAP (transporter associated with antigen processing) molecule is required to transport these peptides into the endoplasmic reticulum, where they can interact with HLA-E. HLA-E then migrates to the cell surface, where it interacts with CD94/NKG2A receptors on natural killer cells. This interaction inhibits natural killer cell-mediated lysis of a cell displaying HLA-E. If the leader peptide is not present in the endoplasmic reticulum, HLA-E is unstable and is degraded before it reaches the cell surface. In damaged cells, such as virally infected or tumour cells, down-regulation of HLA-A, HLA-B and HLA-C production or inhibition of TAP prevents stabilization of HLA-E by the leader peptide. Under these circumstances, HLA-E does not reach the cell surface and the cell is then vulnerable to lysis by natural killer cells. The molecular mechanisms underlying this function of HLA-E have been revealed by crystallographic studies of the structure of HLA-E.


Immunology ◽  
2017 ◽  
Vol 151 (1) ◽  
pp. 89-97 ◽  
Author(s):  
Carly A. Hamilton ◽  
Suman Mahan ◽  
Charlotte R. Bell ◽  
Bernardo Villarreal-Ramos ◽  
Bryan Charleston ◽  
...  

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