scholarly journals Role of Sphingosine-1-Phosphate in Mast Cell Functions and Asthma and Its Regulation by Non-Coding RNA

2017 ◽  
Vol 8 ◽  
Author(s):  
Rohit Saluja ◽  
Ashok Kumar ◽  
Manju Jain ◽  
Sudhir K. Goel ◽  
Aklank Jain
2006 ◽  
Vol 885 (1) ◽  
pp. 268-276 ◽  
Author(s):  
PATRIZIA TEOFOLI ◽  
ALESSANDRA FREZZOLINI ◽  
PIETRO PUDDU ◽  
ORNELLA PITÀ ◽  
ALAIN MAUVIEL ◽  
...  

2021 ◽  
Vol 10 (2) ◽  
pp. 60
Author(s):  
Sylvia Frisancho-Kiss

During the past decades, populous expansion in mast cell scientific literature came forth with more, than forty-four thousand PubMed publications available to date. Such surge is due to the appreciation of the momentous role of mast cells in the evolution of species, in the development and maintenance of vital physiological functions, such as reproduction, homeostasis, and fluids, diverse immunological roles, and the potential of far-reaching effects despite minute numbers. While the emerging knowledge of the importance of mast cells in equilibrium comes of age when looking at the matter from an evolutionary perspective, the recognition of mast cells beyond detrimental performance in allergies and asthma, during protection against parasites, falters. Beyond well known classical functions, mast cells can process and present antigens,can serve as a viral reservoir, can respond to hormones and xenobiotics,initiate antiviral and antibacterial responses, phagocytosis, apoptosis, and participate in important developmental cornerstones. During evolution,upon the development of a sophisticated niche of innate and adaptive cell populations, certain mast cell functions became partially transmutable,yet the potency of mast cells remained considerable. Reviewing mast cells enables us to reflect on the certitude, that our sophisticated, complex physiology is rooted deeply in evolution, which we carry ancient remnants of, ones that may have decisive roles in our functioning. This communication sets out the goal of characterizing mast cells, particularly the aspects less in limelight yet of immense significance, without the aspiration exhaust it all.


2001 ◽  
Vol 13 (3) ◽  
pp. 177-190 ◽  
Author(s):  
Natalia Vilariño ◽  
L.A. de la Rosa ◽  
Mercedes R. Vieytes ◽  
Luis M. Botana

2008 ◽  
Vol 22 (S2) ◽  
pp. 484-484
Author(s):  
Carole Anna OSKERITZIAN ◽  
Megan M Price ◽  
Sarah Kennedy ◽  
John J Ryan ◽  
Sarah Spiegel

2010 ◽  
Vol 207 (3) ◽  
pp. 465-474 ◽  
Author(s):  
Carole A. Oskeritzian ◽  
Megan M. Price ◽  
Nitai C. Hait ◽  
Dmitri Kapitonov ◽  
Yves T. Falanga ◽  
...  

Systemic exacerbation of allergic responses, in which mast cells play a critical role, results in life-threatening anaphylactic shock. Sphingosine-1–phosphate (S1P), a ligand for a family of G protein–coupled receptors, is a new addition to the repertoire of bioactive lipids secreted by activated mast cells. Yet little is known of its role in human mast cell functions and in anaphylaxis. We show that S1P2 receptors play a critical role in regulating human mast cell functions, including degranulation and cytokine and chemokine release. Immunoglobulin E–triggered anaphylactic responses, including elevation of circulating histamine and associated pulmonary edema in mice, were significantly attenuated by the S1P2 antagonist JTE-013 and in S1P2-deficient mice, in contrast to anaphylaxis induced by administration of histamine or platelet-activating factor. Hence, S1P and S1P2 on mast cells are determinants of systemic anaphylaxis and associated pulmonary edema and might be beneficial targets for anaphylaxis attenuation and prophylaxis.


Cells ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 986
Author(s):  
Mark R. Hanes ◽  
Carman A. Giacomantonio ◽  
Jean S. Marshall

Mast cells are important sentinel cells in host defense against infection and major effector cells in allergic disease. The role of these cells in cancer settings has been widely debated. The diverse range of mast cell functions in both immunity and tissue remodeling events, such as angiogenesis, provides multiple opportunities for mast cells to modify the tumor microenvironment. In this review, we consider both skin and breast cancer settings to address the controversy surrounding the importance of mast cells in the host response to tumors. We specifically address the key mediators produced by mast cells which impact tumor development. The role of environmental challenges in modifying mast cell responses and opportunities to modify mast cell responses to enhance anti-tumor immunity are also considered. While the mast cell’s role in many cancer contexts is complicated and poorly understood, the activities of these tissue resident and radioresistant cells can provide important opportunities to enhance anti-cancer responses and limit cancer development.


2004 ◽  
Vol 199 (7) ◽  
pp. 959-970 ◽  
Author(s):  
Puneet S. Jolly ◽  
Meryem Bektas ◽  
Ana Olivera ◽  
Claudia Gonzalez-Espinosa ◽  
Richard L. Proia ◽  
...  

Mast cells secrete various substances that initiate and perpetuate allergic responses. Cross-linking of the high-affinity receptor for IgE (FcεRI) in RBL-2H3 and bone marrow–derived mast cells activates sphingosine kinase (SphK), which leads to generation and secretion of the potent sphingolipid mediator, sphingosine-1–phosphate (S1P). In turn, S1P activates its receptors S1P1 and S1P2 that are present in mast cells. Moreover, inhibition of SphK blocks FcεRI-mediated internalization of these receptors and markedly reduces degranulation and chemotaxis. Although transactivation of S1P1 and Gi signaling are important for cytoskeletal rearrangements and migration of mast cells toward antigen, they are dispensable for FcεRI-triggered degranulation. However, S1P2, whose expression is up-regulated by FcεRI cross-linking, was required for degranulation and inhibited migration toward antigen. Together, our results suggest that activation of SphKs and consequently S1PRs by FcεRI triggering plays a crucial role in mast cell functions and might be involved in the movement of mast cells to sites of inflammation.


2006 ◽  
Vol 177 (8) ◽  
pp. 4991-4997 ◽  
Author(s):  
Huan-Yuan Chen ◽  
Bhavya B. Sharma ◽  
Lan Yu ◽  
Riaz Zuberi ◽  
I-Chun Weng ◽  
...  

Blood ◽  
2008 ◽  
Vol 111 (8) ◽  
pp. 4193-4200 ◽  
Author(s):  
Carole A. Oskeritzian ◽  
Sergio E. Alvarez ◽  
Nitai C. Hait ◽  
Megan M. Price ◽  
Sheldon Milstien ◽  
...  

Abstract Sphingosine-1-phosphate (S1P) is now emerging as a potent lipid mediator produced by mast cells that contributes to inflammatory and allergic responses. In contrast to its weak effect on degranulation of murine mast cells, S1P potently induced degranulation of the human LAD2 mast-cell line and cord blood–derived human mast cells (hMCs). S1P also stimulated production and secretion of cytokines, TNF-α and IL-6, and markedly enhanced secretion of a chemokine, CCL2/MCP-1, important modulators of inflammation. S1P is produced in mast cells by the 2 sphingosine kinases, SphK1 and SphK2. SphK1 but not SphK2 plays a critical role in IgE/Ag-induced degranulation, migration toward antigen, and CCL2 secretion from hMCs, as determined by specifically down-regulating their expression. However, both isoenzymes were required for efficient TNF-α secretion. Taken together, our data suggest that differential formation of S1P by SphK1 and SphK2 has distinct and important actions in hMCs.


Sign in / Sign up

Export Citation Format

Share Document