Natalie Crowley, Author at What is Epigenetics?

3D-Imaging for Epigenetic Changes in the Brain

March 15, 2022 Natalie Crowley

For centuries, scientists and philosophers have been fascinated with learning about the brain. However, it hasn’t been until the last few decades that we’ve really been able to examine this complex organ in action. One advanced technology that has revolutionized our understanding of the human brain is magnetic resonance imaging (MRI). While this method has been extremely useful for measuring neural activity, it hasn’t been used to assess gene regulation – that is, until now. The University of Illinois (U [more…]

How Epigenetics Can Restrict Parent-Specific Gene Information

March 1, 2022 Natalie Crowley

Children are a blend of both their parent’s genes, but not necessarily in an equal way. Some genes inherited from either the father or mother are epigenetically marked with information that causes them to be inactive. This phenomenon is known as genomic imprinting and, although normal, could lead to disease if combined with mutations. For the most part, we acquire two working copies of each gene – one from our dad and one from our mom. Although in genomic imprinting, [more…]

Racial Health Disparities Linked to Epigenetic Elements

February 15, 2022 Natalie Crowley

When it comes to health, race typically has an impact. Evidence compiled over several decades points out marked differences in morbidity and mortality rates across varying racial and ethnic minority groups. And while these disparities can arise from any number of environmental or social exposures, exactly how they detrimentally affect the human body and why they continue to impact certain minority groups is not entirely understood. Most findings attribute minority health disparities to inequalities in education, socioeconomic status, access to [more…]

The Rwanda Genocide Left Lasting Marks on the DNA of Traumatized Women and Their Children

February 1, 2022 Natalie Crowley

In 1994, one of the most horrific civil wars took place in the rural country of Rwanda. In a period of about 100 days, nearly one million people died. Most of the dead were Tutsi – a minority group that was targeted for extermination by the government. In the aftermath of the genocide, many survivors were left with mental health problems such as posttraumatic stress disorder (PTSD) and depression. Although decades have passed, the Rwandan people continue to cope with [more…]

Uncovering the DNA Methylation Profile of Brain Immune Cells

January 18, 2022 Natalie Crowley

We all know by now, especially in the days of COVID-19, how crucial it is to have a properly working immune system. If our bodies can produce the right antibodies and white blood cells to protect us from invading pathogens, we can survive an illness. Sometimes, the body’s immune system is out of whack, doing more damage than good, which is why understanding how immune cells work is essential for developing ways to overcome diseases. Interestingly, the brain and central [more…]

How Epigenetics Helps the Hydra Grow a New Head

January 4, 2022 Natalie Crowley

If you’re familiar with Greek mythology, you’ve probably heard of the Hydra – a gigantic multi-headed serpent that regenerates two heads for each one it loses. It is after this creature that a small freshwater invertebrate is duly named. The Hydra vulgaris, also known simply as Hydra, is a unique organism that exists in a continuous state of renewal. Cut off its head, and it will grow a new one. How it does this, however, has fascinated scientists for centuries [more…]

Twin Study Reveals Epigenetic Factors for Type 2 Diabetes

December 21, 2021 Natalie Crowley

Epigenetic scientists have been keen on studying twins, particularly identical twins, as they are the perfect subjects to gain insight into the effects of the environment on the genome, especially when it comes to diseases. Because identical twins share the same DNA, any differences they have that are environmentally induced most likely show up in their epigenome. In a case where one identical twin has a disease, but the other does not, researchers can look at the twins’ environments for [more…]

Using CRISPR/Cas9 to Epigenetically Activate or Deactivate Genes

December 7, 2021 Natalie Crowley

Since the discovery of the CRISPR-Cas9 system, targeting DNA more precisely for genetic editing has become a lot easier. However, removing part of the genetic code may not be necessary in all cases, especially if there were a way to switch off a gene of interest instead. Thankfully, scientists have found that CRISPR/Cas9 can also be used to do just this – deactivate genes without altering the underlying DNA sequence. When we refer to a cell’s DNA, we’re actually talking [more…]

Scientists Epigenetically Rejuvenate Aging Bone Marrow Stem Cells

November 23, 2021 Natalie Crowley

Most people don’t think about their bones until maybe they break one. But breaking a bone, especially when you are older, could signify that your bones are weak. As we age, our bones become thinner, and our risk for diseases like osteoporosis is higher. This is because the stem cells responsible for keeping bone tissue dense and strong become impaired as we age. Research over the past few years has shown that aging is a process that involves epigenetic factors, [more…]

A Role for m6A Methylation in the Immune Response of Natural Killer Cells Toward Cancer

November 9, 2021 Natalie Crowley

The body’s first line of defense against infection is the innate immune system. Although it is non-specific and less effective than the acquired immune system, it responds to invading pathogens much faster, holding off an immunological threat until a specific response can be mobilized. One integral part of the innate immune system is natural killer cells (NK). As their name suggests, these cells are capable of killing affected cells autonomously while also signaling an immune response as they secrete pro-inflammatory [more…]

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Articles by Natalie Crowley