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DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Correlates of HIV risk associated with decrease in disease transmission, study confirms

Immune responses that are associated with a decreased risk of infection are called correlates of protection.

1 Nov 2019

Study shows potential effect of heavier smoking on facial aging

Heavy smoking may have a causal effect on facial aging, according to new research led by the University of Bristol.

1 Nov 2019

UI scientists are developing new delivery tools for gene editing

News of advances in gene-editing technology raises the prospect of actually using this approach to treat disease in patients. But one of the hurdles that remains is how to deliver these tools to the right cells in the patients safely and efficiently.

31 Oct 2019

Scientists visualize complex cellular machine to yield new insights in cancer

Cellular machines that control chromosome structure, such as the RSC complex, are mutated in about one-fifth of all human cancers.

31 Oct 2019

Three UCLA researchers receive multimillion-dollar grant from state's stem cell agency

Three researchers at the Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research at UCLA have received awards totaling more than $18 million from the California Institute for Regenerative Medicine, the state's stem cell agency.

31 Oct 2019

Mutated version of DNA repair protein may illuminate its role in preventing cancer

Two trillion times each day, the cells in a typical human divide to replace old, damaged or dead cells. Before a cell divides, though, it makes an exact copy of its DNA, which will be passed on to the new cells.

31 Oct 2019

Researchers identify new kidney cancer subtypes and clues to better diagnosis, treatment

In what is believed to be the most comprehensive molecular characterization to date of the most common - and often treatment-resistant - form of kidney cancer, researchers at Johns Hopkins' departments of pathology and oncology, Johns Hopkins Kimmel Cancer Center, and the Johns Hopkins University School of Medicine report evidence for at least three distinct subtypes of clear cell renal cell carcinoma (ccRCC), along with new revelations about the proteins that define them.

From Johns Hopkins Medicine 31 Oct 2019

Mechanisms preserving cell identity are based on status of proteins housing DNA

The inheritance, not only of DNA, but of changes to proteins that package it, maintains the identity of cells as they multiply, a new study finds.

31 Oct 2019

Researchers identify genes linked to most severe symptoms of multiple sclerosis

In a bid to determine factors linked to the most debilitating forms of multiple sclerosis, Johns Hopkins Medicine researchers say they have identified three so-called "complement system" genes that appear to play a role in MS-caused vision loss.

From Johns Hopkins Medicine 31 Oct 2019

Novel method for aggressive breast cancer detection

A new study in rats published in the journal Cell Reports shows that the pattern of RNA molecules produced within certain immune cells called macrophages, found within breast cancers (tumor-associated macrophages, TAMs), can tell whether the tumor is cancerous or not and indicate the type of outcome. The same pattern is present in humans as in mice. This makes it directly useful in predicting the nature of a breast tumor and its outcome.

30 Oct 2019

Scientists receive $1.6 million grant to study impact of phthalate exposure on male fertility

A cross-disciplinary team of scientists, led by University of Massachusetts Amherst environmental epigeneticist Richard Pilsner, will use a three-year, $1.6 million grant from the National Institute of Environmental Health Sciences to expand research into the impact of phthalate exposure on male fertility.

30 Oct 2019

NTU study: Microorganisms show a precise daily rhythm in tropical air

Scientists from the Singapore Centre for Environmental Life Sciences Engineering at Nanyang Technological University, Singapore have found that the air in the tropics is teeming with a rich and diverse range of at least 725 different microorganisms.

30 Oct 2019

Liquid biopsy can predict prognosis in patients with glioblastoma

A blood test that measures the amount of cell-free DNA (cfDNA) in the bloodstream - called a liquid biopsy - correlates with how patients will progress after they are diagnosed with glioblastoma (GBM), the deadliest and most common primary brain tumor in adults.

30 Oct 2019