Breaking News
June 17, 2018 - Sunovion Announces FDA Acceptance of New Drug Application for Apomorphine Sublingual Film (APL-130277)
June 17, 2018 - Bid to beat obesity focuses on fat that keeps us warm
June 17, 2018 - Work Stress May Increase Risk of Developing Atrial Fibrillation
June 17, 2018 - New Zealand’s secret recipe for active school travel: The neighborhood built environment
June 17, 2018 - New Medscape report reveals sexual harassment rate of physicians
June 17, 2018 - Surgical Blood Transfusions Tied to Clot Risk
June 17, 2018 - CDC chief makes $375K, far exceeding his predecessors’ pay
June 17, 2018 - Education linked to higher risk of short-sightedness
June 17, 2018 - Patients with Moderate-to-Severe Ulcerative Colitis Achieved Clinical and Endoscopic Remission with Mirikizumab in Phase 2 Trial
June 17, 2018 - UA registers a more customised multifocal lens to correct presbyopia
June 17, 2018 - U.S. FDA and European Medicines Agency Accept Regulatory Submissions for Review of Talazoparib for Metastatic Breast Cancer Patients with an Inherited BRCA Mutation
June 17, 2018 - Vaginal estrogen tablets, moisturizers and placebo gel all can improve vaginal discomfort
June 17, 2018 - Addition of Bezafibrate Beneficial in Primary Biliary Cholangitis
June 17, 2018 - Radiation Therapy for Cancer – National Cancer Institute
June 17, 2018 - Technology could help pregnant women detect health complications
June 17, 2018 - Study finds drop in frequent use of ED after Affordable Care Act
June 17, 2018 - Do Antipsychotic Meds for Kids Raise Diabetes Risk?
June 17, 2018 - New light shed on mechanisms of paediatric epilepsy
June 17, 2018 - People who deeply grasp the pain or happiness of others also process music differently in the brain
June 16, 2018 - Scientists discover how cancer-targeting ‘Natural Killer’ cells are fueled in the body
June 16, 2018 - New England Journal of Medicine Publishes Pivotal Cemiplimab Trials Showing Positive Results in Advanced Cutaneous Squamous Cell Carcinoma
June 16, 2018 - Annual Report to the Nation: overall cancer mortality continues to decline, prostate cancer mortality has stabilized
June 16, 2018 - Ibuprofen, acetaminophen more effective than opioids in treating dental pain
June 16, 2018 - Intra-Cellular Therapies Initiates Rolling Submission of New Drug Application for Lumateperone for Treatment of Schizophrenia
June 16, 2018 - Price competition for generic drugs linked to increase in manufacturing-related recalls
June 16, 2018 - Researchers develop biomimetic nanosystem to deliver therapeutic proteins to target tumors
June 16, 2018 - Negative Pressure Wound Tx No Benefit for Lower Limb Open Fx
June 16, 2018 - Should I Get Screened for Prostate Cancer?
June 16, 2018 - Biochemist, physicist team to see antibacterial TCS deform mitochondria
June 16, 2018 - New 2D Superresolution mode for ZEISS Airyscan offers higher resolution in live cell imaging
June 16, 2018 - Money Spurs Those With Heart Disease to Step Lively
June 16, 2018 - Lower Dose of Prostate Cancer Drug with Food
June 16, 2018 - New findings demonstrate how the food we eat affects biochemical signals in the gut
June 16, 2018 - Scientists develop method to determine metabolic activity of neural networks
June 16, 2018 - Topical gel may lower breast cancer risk in women with dense breast tissue
June 16, 2018 - Research team diagnoses asthma with nasal brush test
June 16, 2018 - Dacomitinib Shows More than Seven-Month Improvement in Overall Survival Compared to an Established Therapy in Advanced NSCLC with EGFR-Activating Mutations
June 16, 2018 - Novel PET imaging noninvasively pinpoints colitis inflammation
June 16, 2018 - New clinical trial of MS drug will be first to recognize needs of wheelchair users
June 16, 2018 - Evoke Announces FDA Submission of New Drug Application for Gimoti
June 16, 2018 - New study links gray hair with immune system activity and viral infection
June 16, 2018 - Various E-cigarette flavorings may increase risk of cardiovascular disease
June 16, 2018 - Research sheds light on pathways involved in transmitting itch sensations from skin to brain
June 16, 2018 - Eminent biologist resigns over allegations of gender discrimination and sexual harassment
June 16, 2018 - Consuming sugary soft drinks can make you fat
June 16, 2018 - CDC: Preterm Births Increased in United States During 2014-2016
June 16, 2018 - Adolescents with hay fever have higher rates of anxiety and depression, lower resistance to stress
June 16, 2018 - Metabolic process providing energy to heart muscle fails to mature in babies with hypertrophy
June 16, 2018 - TU Graz researchers manipulate enzymes to build ring-shaped molecular structures
June 16, 2018 - Looking Good! Plastic Surgery for Men Surges
June 16, 2018 - Discovery of how HIV hedges its bets opens the door to new therapies
June 15, 2018 - Researchers evaluate left ventricular systolic function after pulmonary valve replacement
June 15, 2018 - New resource launched based on first-hand experiences of premature baby loss
June 15, 2018 - About Teen Pregnancy | Teen Pregnancy | Reproductive Health
June 15, 2018 - In southern Mozambique, one out of three people diagnosed with HIV do not disclose their status
June 15, 2018 - Researchers discover genomic characteristics that define testicular germ cell cancer
June 15, 2018 - Engineers create first 3D computer model to show breast duct development
June 15, 2018 - ANU scientists invent new system that could help crack down on illegal drug trade
June 15, 2018 - Study shows remarkable plasticity of the brain in finding work-arounds after catastrophic injuries
June 15, 2018 - Study finds higher response to anti-PD1 immunotherapy in older melanoma patients
June 15, 2018 - New Data from Phase 1 Study of Ivosidenib or Enasidenib in Combination with Azacitidine Demonstrate Robust Responses and a Well Tolerated Safety Profile in Newly Diagnosed IDHm AML Patients
June 15, 2018 - Smoking, lack of exercise linked to early death after divorce
June 15, 2018 - Researchers identify gene enhancer that affects sex determination
June 15, 2018 - New collaboration integrates Intabio’s Blaze solution with Bruker’s mass spectrometers
June 15, 2018 - Blood samples can be used to uncover genetic secrets inside the brain
June 15, 2018 - Palatin Technologies Announces FDA Acceptance for Review of Bremelanotide NDA
June 15, 2018 - Can you rely on the drugs that your doctor prescribes?
June 15, 2018 - WHO: Paraguay achieves malaria-free status
June 15, 2018 - Investigating Enamel Nanostructure with Nanoindentation
June 15, 2018 - FDA Approves Moxidectin for the Treatment of River Blindness
June 15, 2018 - Researchers discover cell structure that plays a role in epigenetic inheritance
June 15, 2018 - Study shows how using service dogs may provide physiological benefits to veterans with PTSD
June 15, 2018 - New chemical solution could reduce chances of infection associated with root canal work
June 15, 2018 - Fat and carb rich foods preferred by the brain
June 15, 2018 - Scientists discover unique feature in the ‘antennae’ of light-sensing neurons
June 15, 2018 - Researchers observe increase in activity of neurons grown on single layer of graphene
June 15, 2018 - Researchers find enzyme responsible for aircraft noise-related vascular damage
June 15, 2018 - Study shows improvements in adherence, outcomes of gout patients receiving text message reminders
June 15, 2018 - Accelerated brain maturation linked to stress in childhood
June 15, 2018 - FDA Alert: Compounded Products Containing Triamcinolone-Moxifloxacin by Guardian Pharmacy Services (Dallas, Texas): Alert to Health Professionals
Genetic labeling helps researchers track behavior of blood cells

Genetic labeling helps researchers track behavior of blood cells

image_pdfDownload PDFimage_print

By tagging bone marrow cells of mice with a genetic label, or barcode, researchers were able to track and describe the family tree of individual blood cells as they form in their natural environment. The scientists discovered that these cells regenerate differently than their counterparts do after a blood cell transplant, according to a study published Jan. 3 in Nature and funded by the National Heart, Lung and Blood Institute (NHLBI), part of the National Institutes of Health.

“The findings of this research, if applicable to humans, will have implications for blood cell transplantation, and for clinical and research methods using blood cells, such as gene therapy or gene editing,” said John W. Thomas, Ph.D., Stem Cell and Cell-based Therapy Coordinator at NHLBI.

This study moves research a step further towards the development of blood regeneration therapies, but the researchers believe it is also applicable to a variety of cells and will yield insights about regenerating diseased or damaged tissues.

“Our results show that stem cells and their less pluripotent descendants, blood progenitors, behave somewhat differently when studied without removing them from their native environment versus when studied in a laboratory or in transplantation; leading to differences in the type of blood lineages they make,” said study’s first author Alejo Rodriguez Fraticelli, Ph.D., from Harvard Stem Cell Institute, at the Boston Children’s Hospital.

Due to the lack of appropriate tools to study how blood forms in the natural environment of the body, the majority of studies about where individual blood cells come from have been done after a transplant. In that context, the transplanted cells would have been “perturbed,” or removed from their natural environment. According to the researchers, the current models are more likely to represent a roadmap of lineage potential for the blood cells’ natural offspring.

For Rodriguez Fraticelli, this highlights the importance of studying blood regeneration in its native context. “Moving forward, we need to come up with methods to better predict what types of cells will be the most optimal for therapy, for instance in reprogramming cells, and editing,” he said.

In the study, researchers tagged cells using a transposon, a piece of genetic code that can jump to a random point in DNA when exposed to an enzyme called transposase, to track blood progenitors and adult stem cells during the natural, unperturbed process of blood regeneration.

The research provides evidence for a substantially revised roadmap for normal blood regeneration or blood production in the natural environment and highlights how in those conditions blood stem cells and progenitor cells manifest unique properties.

Source:

https://www.nhlbi.nih.gov/news/2018/cellular-barcoding-helps-scientists-understand-behavior-stem-cells

Tagged with:

About author

Related Articles