Dysregulation of the type 2 immune system presents with various manifestations, including allergic inflammation, and has emerged as an alarming public health issue. The pathological mechanisms that underlie T helper type 2 cell–driven (Th2-driven) allergic diseases remain unclear. In particular, it is not completely understood how type 2 immunity is restricted in inflammatory responses. In this issue of the
Yun Liang, Johann E. Gudjonsson
Atrial fibrillation (AF) is a cardiac arrhythmia that arises from electrical and contractile dysfunction in the atria. Atrial function is regulated by a variety of intracellular signaling networks that facilitate rapid communication and coordinate responses of atrial myocytes. In this issue of the
Thomas J. Hund, Peter J. Mohler
Mast cells (MCs) are present in various tissues and are responsible for initiating many of the early inflammatory responses to extrinsic challenges. Recent studies have demonstrated that MCs can tailor their responses, depending on the stimulus encountered and the tissue in which they are stimulated. In this issue of the
Jörn Karhausen, Soman N. Abraham
Eosinophils are classically known as proinflammatory cells, as they are equipped with a variety of preformed cytotoxic mediators and have been shown to definitively contribute to asthma. The connection between eosinophils and asthma development has led to a new class of asthma therapeutics based on blocking eosinophils with humanized antibodies that neutralize IL-5, a potent eosinophil growth, activation, and survival factor. Yet, recent studies have led to an increasing appreciation that eosinophils have a variety of homeostatic functions, including immunomodulation. In this issue of the
Marc E. Rothenberg
Angiopoietin-1/Tie2 (ANG1/Tie2) signaling is well documented as regulating angiogenesis and vessel maturation. This pathway is complicated by involvement of the orphan receptor Tie1, which has been implicated as both a positive and negative regulator of ANG1/Tie2 signaling, and ANG2, which can serve as both a Tie2 agonist and antagonist, depending on the context. Two papers in this issue of the
Sarah B. Mueller, Christopher D. Kontos
Germline breast cancer 1 (
Simon N. Powell
Pancreatic ductal adenocarcinoma (PDAC) is a deadly cancer in which NF-κB pathways promote biological aggressiveness. In this issue of the
Murray Korc
Pregnant women with antiphospholipid syndrome (APS) are at a high risk of obstetrical complications. The current standard of care, including the use of low-dose aspirin and heparin, has not been shown to prevent preeclampsia or intrauterine growth restriction (IUGR). Due to the similarities in pathophysiology among preeclampsia, IUGR, and atherosclerotic cardiovascular disease, statins have been proposed for treating and/or preventing these obstetrical complications. In this issue of the
Maged M. Costantine
The recent clinical success of chimeric antigen receptor (CAR) T cell therapy for B cell malignancies represents a paradigm shift in cancer immunotherapy. Unfortunately, application of CAR T cell–mediated therapy for solid tumors has so far been disappointing, and the reasons for this poor response in solid tumors remain unknown. In this issue of the
Xiaopei Huang, Yiping Yang
The secretory protein Dickkopf-1 (DKK-1) is a known Wnt antagonist and has been shown to suppress tumorigenesis in some cancer cells; however, it is also upregulated in many types of cancer and associated with poor prognosis. Wnt-independent mechanisms by which DKK-1 promotes cancer cell proliferation are not well understood. In this issue of the
Dheeraj Bhavanasi, Kelsey F. Speer, Peter S. Klein
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