Related Experiment Video
Updated: Jun 12, 2025

Assessment of Respiratory Function in Conscious Mice by Double-chamber Plethysmography
Published on: July 10, 2018
Gasping for air: HIF2α in asthma
Shilpi Giri1, Amanda C Poholek1
1Center for Systems Immunology, Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
T helper 2 (Th2) cells drive allergic asthma inflammation. A new study shows hypoxia-inducible factor 2-alpha (HIF2α) promotes inflammatory Th2 cell differentiation, offering a potential therapeutic target for asthma.
Area of Science:
- Immunology
- Molecular Biology
- Respiratory Medicine
Background:
- T helper 2 (Th2) cells play a dual role, offering protection in infections and wound healing, but also driving inflammation in allergic asthma.
- Understanding the molecular mechanisms that promote inflammatory Th2 cell differentiation is crucial for developing effective asthma treatments.
Purpose of the Study:
- To investigate the role of hypoxia-inducible factor (HIF)2α in the differentiation of inflammatory Th2 cells.
- To explore HIF2α as a potential therapeutic target for allergic asthma.
Main Methods:
- The study involved analyzing the differentiation pathways of Th2 cells.
- Investigated the expression and function of HIF2α in the context of Th2 cell development.
Main Results:
- Zou et al. demonstrate the crucial involvement of hypoxia-inducible factor (HIF)2α in promoting the differentiation of inflammatory Th2 cells.
- Findings suggest HIF2α is a key factor in the development of Th2-mediated allergic inflammation.
Conclusions:
- Hypoxia-inducible factor (HIF)2α is a critical regulator in the differentiation of inflammatory Th2 cells.
- HIF2α presents a promising therapeutic target for the treatment of allergic asthma.
Related Concept Videos
Asthma-II: Pathophysiology and Classification
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
Asthma: Pathogenesis and Management
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma-I: Introduction
Antiasthma Drugs: Leukotriene Modifiers
Leukotriene modifiers work through two distinct mechanisms:
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Antiasthma Drugs: Methylxanthines
Theophylline is thought to inhibit phosphodiesterase enzymes, increasing intracellular levels of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). This rise in cAMP and cGMP concentrations stimulates cardiac function,...

