Archive for epigenetics
The surprisingly specific genetics of joint disease
A new study provides unexpected insights into the biology of two common, heritable orthopedic conditions: developmental dysplasia of the hip (DDH) and knee osteoarthritis (OA). The findings, published July 6 in Nature Communications, show how a gene can have different effects in different parts of the body. They also raise the possibility of preventive measures ... Read More about The surprisingly specific genetics of joint disease
Missed signals? A new way we vary from each other biologically
Genetics has made huge strides over the past 20 years, from the sequencing of the human genome to a growing understanding of factors that turn genes on and off, namely transcription factors and the DNA “enhancer” sequences they bind to. New research from Boston Children’s Hospital introduces another previously unknown layer of human genetics. It ... Read More about Missed signals? A new way we vary from each other biologically
Chromatin regulation enables generation of diverse antibodies
We need a variety of antibody types to help fight off invading foreign pathogens and our genome is exquisitely tuned to produce them to meet emerging needs. A new study finds that not just our DNA, but its configuration and packaging, help us generate diverse antibodies. Key takeaways Chromatin loop extrusion leads to creation of ... Read More about Chromatin regulation enables generation of diverse antibodies
Diving into the dark side of ependymoma
Mariella Filbin, MD, PhD, a neuro-oncologist at Dana-Farber/Boston Children’s Cancer and Blood Disorders Center, is driven by a desire to find new therapies for some of the hardest-to-treat pediatric brain tumors. At the core of her work is an effort to uncover the events that shape tumor development. Key takeaways:· Aggressive ependymoma tumors are stuck ... Read More about Diving into the dark side of ependymoma
Targeted small-molecule agent shows early promise against a dangerous infant leukemia
Leukemias involving reshuffling or rearrangement of the mixed lineage leukemia (MLL) gene, known as MLL-rearranged or MLL-r leukemias, account for 70 to 80 percent of acute leukemias in infants under one year old. In these blood cancers, a subset of acute myeloid and acute lymphoid leukemias (AML and ALL), the MLL gene breaks and reattaches ... Read More about Targeted small-molecule agent shows early promise against a dangerous infant leukemia
Unlocking antibody diversity: chromatin loops, V(D)J recombination, and class switching
A new study from the laboratory of Frederick Alt, PhD, of the Program in Cellular and Molecular Medicine (PCMM) at Boston Children’s Hospital reveals yet another way in which chromatin regulation — changing the configuration of our DNA and its packaging — enables our immune systems to produce its wide-ranging arsenal of antibodies. In September in the ... Read More about Unlocking antibody diversity: chromatin loops, V(D)J recombination, and class switching
Meet BORIS: A new culprit in drug-resistant cancer?
Like a Russian bot corrupting U.S. elections, or a new prime minister wreaking havoc in the U.K., a protein named BORIS is showing itself to be a malevolent player in some childhood cancers. New research fingers BORIS as a culprit that can hack the neuroblastoma genome, rousing the cancer cells from dormancy after certain types ... Read More about Meet BORIS: A new culprit in drug-resistant cancer?
How new loops in DNA packaging help us make diverse antibodies
Diversity is good, especially when it comes to antibodies. It’s long been known that a gene assembly process called V(D)J recombination allows our immune system to mix and match bits of genetic code, generating new antibodies to conquer newly encountered threats. But how these gene segments come together to be spliced has been a mystery. ... Read More about How new loops in DNA packaging help us make diverse antibodies
Presidential awardee explores epigenetics via slime molds, worms, and more
Pretty much all of your cells have the same DNA code. Yet they come in an astonishing number of forms. Some cells contract so that your heart can beat or your muscles flex. Others have jobs in your immune system, tuned to recognize different threats. And cells can change their behavior, altering their metabolism for ... Read More about Presidential awardee explores epigenetics via slime molds, worms, and more
Overriding resistance to epigenetic inhibitors in neuroblastoma
Neuroblastoma and other children’s cancers pose unique challenges. They’re not caused by the same kinds of genetic mutations that cause adult cancers, and only a minority of their mutations can be targeted with drugs. In a recent study, a team led by Kimberly Stegmaier, MD, at Dana-Farber/Boston Children’s Cancer and Blood Disorders Center systematically deleted every gene ... Read More about Overriding resistance to epigenetic inhibitors in neuroblastoma