The neonatal methylome as a gatekeeper in the trajectory to childhood asthma

Avery DeVries1,2, Donata Vercelli2,3,4,5

  • 1Graduate Program in Cellular & Molecular Medicine, University of Arizona, Tucson, AZ, USA.

Epigenomics
|March 22, 2017
PubMed

Insights

Childhood asthma epigenetics starts at birth and is influenced by prenatal exposures. DNA methylation patterns are key to understanding asthma development and the methylome's role.

Area of Science:

  • Pediatric respiratory medicine
  • Epigenetics and developmental biology
  • Environmental health sciences

Background:

  • Asthma is a complex respiratory condition often starting in childhood.
  • Epigenetic mechanisms are implicated in asthma pathogenesis but not fully understood.
  • A developmental perspective is crucial for understanding childhood asthma.

Purpose of the Study:

  • To explore the developmental trajectory of childhood asthma epigenetics.
  • To investigate the impact of prenatal environmental exposures on asthma epigenetics.
  • To analyze in vitro models of asthma-associated exposures on the human epigenome.

Main Methods:

  • Review of recent research on the epigenetics of childhood asthma.
  • Analysis of genome-wide DNA methylation studies.
  • Examination of in vitro models simulating environmental exposures.

Main Results:

  • The epigenetic trajectory to childhood asthma is initiated at birth.
  • Prenatal environmental exposures can significantly affect this epigenetic trajectory.
  • Genome-wide DNA methylation surveys reveal insights into asthma pathogenesis.

Conclusions:

  • Epigenetic processes, particularly DNA methylation, play a critical role in childhood asthma development.
  • Understanding the methylome's involvement offers new avenues for asthma prevention and treatment.
  • A developmental and environmental perspective is essential for comprehending asthma epigenetics.

Related Concept Videos

Asthma: Pathogenesis and Management01:20

Asthma: Pathogenesis and Management

Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
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.
1.5K
Asthma-I: Introduction01:29

Asthma-I: Introduction

Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
3.6K
Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

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:
4.7K
Antiasthma Drugs: Methylxanthines01:24

Antiasthma Drugs: Methylxanthines

Theophylline, a member of the methylxanthine class of bronchodilators, has long been used in asthma management. While its exact mechanism of action is not fully understood, it is believed to have multiple effects on various cellular processes.
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,...
1.8K
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
38.1K
Asthma-IV: Diagnostic and Management01:30

Asthma-IV: Diagnostic and Management

The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
Clinical Assessment for Asthma:
This is the first step in diagnosing and managing asthma. It includes:
3.3K