Breaking News
March 21, 2018 - Insurance Company Hurdles Burden Doctors, May Harm Patients
March 21, 2018 - Renal Transplant from HCV-Positive Donors Feasible
March 21, 2018 - Myelodysplastic syndrome: MedlinePlus Medical Encyclopedia
March 21, 2018 - Research reveals brain mechanism involved in language learning
March 21, 2018 - Many parents still hesitate to try early peanut introduction, survey finds
March 21, 2018 - Audiologist urges tinnitus sufferers facing ‘revolving door healthcare’ to seek support
March 21, 2018 - Study reveals impact of prostate cancer on wives and partners of sufferers
March 21, 2018 - ‘Almost a Miracle Drug’: What We Heard This Week
March 21, 2018 - Study shows NIH spent >$100 billion on basic science for new medicines
March 21, 2018 - Columbia researchers identify nerve cells that drive fruit fly’s escape behavior
March 21, 2018 - Sartorius Stedim Biotech selected by ABL Europe to supply single-use process technologies
March 21, 2018 - Increase in coffee consumption may help battle against colon cancer
March 21, 2018 - Hydrogel may accelerate healing of diabetic ulcers
March 21, 2018 - Dermira’s Two Phase 3 Trials Evaluating Olumacostat Glasaretil in Patients with Acne Vulgaris Did Not Meet Co-Primary Endpoints
March 21, 2018 - DePuy Synthes introduces ACTIS Total Hip System for improving initial implant stability
March 21, 2018 - ‘Oh, It Was Nothing’
March 21, 2018 - Herbal drug kratom linked to salmonella illnesses, CDC says
March 21, 2018 - New optical point-of-care device could enhance screening for thyroid nodules
March 21, 2018 - FDA Expands Approval of Adcetris (brentuximab vedotin) for First-Line Treatment of Stage III or IV Classical Hodgkin Lymphoma in Combination with Chemotherapy
March 21, 2018 - Eosinophilic Esophagitis: Late Manifestation of Allergic March
March 21, 2018 - Signaling pathway involving the Golgi apparatus identified in cells with Huntington’s disease
March 21, 2018 - Quintupling inhaled steroid doses may not benefit children with asthma
March 21, 2018 - Study shows clear connection between cardiovascular fitness in middle age and dementia risk
March 21, 2018 - Premature babies have higher risks of health complications in Bangladesh
March 21, 2018 - Child’s temperament and parenting influence weight gain in babies
March 21, 2018 - Researchers find the heart to be capable of arrhythmia termination after local gene therapy
March 21, 2018 - Inhealthcare to provide digital infrastructure for NHS to help protect people from falls
March 21, 2018 - Flu Season Finally Slowing Down
March 21, 2018 - Mixed Results for Shorter DAPT in ACS Patients
March 21, 2018 - Scientists discover fish scale-derived collagen effective for healing wounds
March 21, 2018 - Genomics England announces new partnership to improve efficiency of next-generation sequencing analysis
March 21, 2018 - Adjuvant AC chemotherapy found to be effective in treating HRD-positive breast cancer patients
March 21, 2018 - Researchers identify new treatment targets for lung diseases using big data
March 21, 2018 - Kids see more women in science than five decades ago
March 21, 2018 - Research shows link between chronic fatigue syndrome and lower thyroid hormone levels
March 21, 2018 - Alzheimer’s disease on the rise
March 21, 2018 - Two Agents Equal as Pretreatment for Adrenal Tumor Surgery
March 21, 2018 - ‘Icebreaker’ protein opens genome for T cell development, researchers find
March 21, 2018 - Women in medicine shout #Metoo about sexual harassment at work
March 21, 2018 - Mother’s pre-pregnancy waist size may be linked to child’s autism risk
March 21, 2018 - Second hand marijuana smoke can cause serious damage
March 21, 2018 - International study shows benefits of using MRI at the start of prostate cancer diagnosis
March 20, 2018 - Santhera Reports Outcome of Exploratory Trial with Idebenone in PPMS Conducted at the NIH
March 20, 2018 - ECG Patch Ups At-Home Afib Diagnosis in mSToPS Trial
March 20, 2018 - ROS-scavenging nanozymes for anti-inflammation therapeutics
March 20, 2018 - Genomics England announces appointment of global genomics pioneer as first CEO
March 20, 2018 - Test flight at German Aerospace Center in Cologne demonstrates functionality of deficopter
March 20, 2018 - Music therapy helps treat combat-related psychological injuries in military personnel
March 20, 2018 - Innovative psychotherapeutic treatment protocol for obsessive-compulsive disorders
March 20, 2018 - Weight loss after lap-band surgery alleviates arthritic knee pain
March 20, 2018 - New diabetes drug may help obese people shed body weight
March 20, 2018 - Novel Peanut OIT a Winner in Phase III Trial
March 20, 2018 - Can gene therapy be harnessed to fight the AIDS virus?
March 20, 2018 - Education and academic achievement can lessen effects of child abuse, neglect
March 20, 2018 - Researchers develop new algorithm to make CPR more effective
March 20, 2018 - Diabetes medication reduces chance of late miscarriage, premature birth among women with PCOS
March 20, 2018 - SSRIs may be more effective option for treating anxious youth, UC research shows
March 20, 2018 - Antibiotics could benefit women suffering from chronic bladder pain
March 20, 2018 - Health Highlights: March 16, 2018
March 20, 2018 - Interventional Radiology Has a Problem of ‘Unseen’ Value
March 20, 2018 - Antibodies show effectiveness for HIV prevention and promise for treatment and cure
March 20, 2018 - New 3-D-printed technology will improve radiology training
March 20, 2018 - New study identifies key role for particular gene in 16p11.2 deletion syndrome
March 20, 2018 - Red and processed meat increase the risk of liver disease
March 20, 2018 - 50% of Australians do not brush teeth twice a day
March 20, 2018 - American Gene Technologies receives second immuno-oncology patent
March 20, 2018 - Study finds no link between long-term violent video game play and adult aggression
March 20, 2018 - Weight loss surgery widely underutilized among young patients with severe obesity
March 20, 2018 - Scientists uncover new answers to cell aging in children with rare, fatal disease
March 20, 2018 - The Pistoia Alliance Calls for Greater Life Sciences Collaboration to Build the ‘Lab of the Future’
March 20, 2018 - Morning Break: Psychopathic Thought; Americans Flout Zzz’s; Farm to Pharma
March 20, 2018 - Perceptions of old age change as we age
March 20, 2018 - New standards for public involvement in research launched across the UK
March 20, 2018 - Whole Genome Sequencing used as diagnostic solution for TB
March 20, 2018 - Researchers show how two cancer genes work together to trigger leukemia
March 20, 2018 - Scientists discover basic molecular mechanism that helps understand how ALS works
March 20, 2018 - Multi-center study to evaluate promising new intervention for upper limb dysfunction after SCI
March 20, 2018 - Researchers develop technology to program DNA for delivering cancer drugs
March 20, 2018 - Northwestern scientists bring precision medicine to rheumatoid arthritis
March 20, 2018 - Research suggests possible link between heading a soccer ball and brain imbalance
MyD88—villain of allergies and asthma

MyD88—villain of allergies and asthma

image_pdfDownload PDFimage_print
MyD88—villain of allergies and asthma
Florescence microscopy image of mouse dendritic cells with mRNA-loaded blood cells.

Even if you don’t have allergies yourself, I guarantee you can list at least three people you know who have allergies. Asthma, a respiratory disorder commonly associated with allergies, afflicts over 300 million individuals worldwide.

Seddon Y. Thomas who works at the National Institute of Environmental Health Sciences has been exploring how sensitization to allergens occurs. The work, which she described at a recent session of the Immunology Seminar Series, specifically focuses on the relationship between sensitization and the adaptor molecule MyD88.

MyD88 transfers signals between some of the proteins and receptors that are involved in immune responses to foreign invaders. Since allergies entail inflammation caused by an immune response, Thomas recognized that MyD88 played a role in the immune system’s sensitization to inhaled allergens.

Her research aims to discover how MyD88 alters conventional dendritic cells (cDCs) which are innate immune cells that drive allergic inflammation. MyD88 signaling in cDCs sometimes preserves open chromatin—the availability of DNA for rapid replication—which allows gene changes to happen quickly and in turn causes allergic sensitization. Open chromatin regions permit the DNA manipulation that can lead to allergies and asthma.

To conduct her experiments, Thomas examines what happens in mice when she deletes MyD88 from lung epithelial cells and from antigen-presenting cells. Lung epithelial cells form a protective tissue where inhaled air meets the lung and protects from foreign invaders. But sometimes it takes its job a little too seriously and reacts strongly to allergens.

Similarly, antigen-presenting cells are involved in the immune system’s mission to protect the body, but can become confused about who the enemy is. When the signaling adaptor MyD88 is removed from lung epithelial cells, the number of eosinophils, inflammatory white blood cells, decreases. When it is removed from antigen-presenting cells, another type of white blood cell, neutrophils, also decreases.

Thomas said this shows that MyD88 is necessary for the inflammation in the lungs that causes asthma and allergies.

In her future research, Thomas wishes to explore dendritic cell gene expression, the molecular pathways controlling gene expression, and how specific types of lung epithelial cells adjust immune responses. Because MyD88 plays a role in the genetic changes, it makes sense to continue research on the genetic side.

Explore further:
Fighting allergies by silencing immune cells

Provided by:
Duke University

Tagged with:

About author

Related Articles