在乙性食道炎中表皮功能障碍的解决是由HIF-1α-CD73-adenosine信号轴介导的
Shauna K Kellett1, Taylor Crue2, Sofia N Almeida Cruz1
1Allergy, Inflammation and Remodeling Research Laboratory, Department of Biology, National University of Ireland Maynooth, Maynooth, Ireland; Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Ireland.
The Journal of allergy and clinical immunology
|September 21, 2025
概括
缺陷的缺氧诱导因子-1α (HIF-1α) 信号在性食道炎 (EoE) 中降低了CD73的调节,损害了伤口愈合. 通过恢复屏障功能,ADORA2B激动症可能为EoE提供一种新的治疗策略.
科学领域:
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 性食道炎 (EoE) 与炎症性缺氧和缺氧诱导因子-1alpha (HIF-1α) 表达的降低有关.
- 在EoE患者中观察到减少的CD73/ecto-5'-核酶,一种产生腺的酶和HIF-1α标.
研究的目的:
- 调查CD73失调是否有助于表皮层伤口愈合和EOE中的屏障功能受损.
- 为了确定HIF-1α和细胞外腺素信号是否调解这些效应.
主要方法:
- 在体外:EPC2-hTERT细胞用于测试和3D空气-液体接口培养.
- 药理干预措施:CD73抑制,ADORA2B激活和HIF-1α稳定.
- 在体内:L2-IL5OXA EoE小鼠模型与HIF-1α过度表达和ADORA2B激动剂治疗.
主要成果:
- 在体外,CD73抑制损害了伤口愈合和上皮屏障功能.
- 在ADORA2B的激活过程中,通过增加纤维素 (FN1) 和闭合素 (OCLN) 表达,恢复了伤口愈合和屏障完整性.
- 在体内研究证实,ADORA2B激动性和HIF-1α稳定性在EoE小鼠模型中改善了表皮质屏障完整性.
结论:
- 缺陷的HIF-1α信号在缺氧驱动CD73降低调节在EoE,导致受损的腺素信号,伤口愈合,和屏障功能障碍.
- 通过增强屏障功能,ADORA2B激动症为治疗EoE提供了潜在的治疗途径.
相关概念视频
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.6K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.6K
Role Of Notch Signalling In Intestinal Stem Cell Renewal
2.4K
Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.4K
Asthma-II: Pathophysiology and Classification
4.1K
Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
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:
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:
4.1K
Barrett Esophagus-II: Clinical Manifestations and Management
802
Individuals with Barrett's esophagus are often asymptomatic, but they may experience symptoms commonly associated with GERD, such as heartburn and acid regurgitation. Additional symptoms can include difficulty swallowing, chest pain, unintentional weight loss, blood in the stool (which may appear black, tarry, or bloody), and episodes of vomiting.
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure...
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure...
802
Regulation of Angiogenesis and Blood Supply
3.3K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
3.3K
Pathophysiology of Peptic Ulcer Disease: Injurious Factors
1.1K
Peptic ulcers are sores on the stomach's inner lining and the upper small intestine, which are the result of disruptions in the mucosal layer that houses parietal cells which produce gastric acid, and chief cells which secrete pepsinogen.
In the antrum region, G cells secrete the gastrin hormone that binds to gastrin-cholecystokinin-B (CCK2) receptors on parietal and enterochromaffin-like (ECL) cells in the fundic glands. Simultaneously, the vagus nerve releases acetylcholine, which binds...
In the antrum region, G cells secrete the gastrin hormone that binds to gastrin-cholecystokinin-B (CCK2) receptors on parietal and enterochromaffin-like (ECL) cells in the fundic glands. Simultaneously, the vagus nerve releases acetylcholine, which binds...
1.1K


