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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).

Genetic mystery of infertility in fruit flies discovered

Researchers have discovered a novel parasitic gene in fruit flies that is responsible for destroying the eggs in the ovaries of their daughters.

17 Dec 2019

Extrachromosomal circular DNA can contribute to cancer development in children

Cancer development is associated with the gradual accumulation of DNA defects over time. Thus, cancer is considered an age-related disease.

17 Dec 2019

New gene therapy has potential to reverse disease processes

Scientists have developed a new gene-therapy technique by transforming human cells into mass producers of tiny nano-sized particles full of genetic material that has the potential to reverse disease processes.

17 Dec 2019

Penn researchers track defective sperm epigenome linked to male infertility

One out of eight couples has trouble conceiving, with nearly a quarter of those cases caused by unexplained male infertility. For the past decade, research has linked that infertility to defective sperm that fail to "evict" proteins called histones from DNA during development.

16 Dec 2019

Tackling antibiotic resistance head-on with CRISPR

With modern advances in genetic engineering occurring almost every day, the latest discovery concerns antibiotic resistance. Using the powerful gene editor CRISPR, scientists reported the development of a gene-drive system that is 100 times as efficient as other current systems at inactivating a specific bacterial gene responsible for making the bacterium antibiotic-resistant and which is present as multiple copies within the same bacterial cell.

16 Dec 2019

Evolutionarily novel genes found to be expressed in tumors

A team of scientists from Peter the Great St.Petersburg Polytechnic University (SPbPU) studied the evolutionary ages of human genes and identified a new class of them expressed in tumors -- tumor specifically expressed, evolutionarily novel (TSEEN) genes.

16 Dec 2019

Important discovery about male infertility could lead to new treatments

Using a new mouse model, Penn Medicine researchers have identified defects in the sperm epigenome that cause male infertility.

16 Dec 2019

Researchers identify rare genetic disorder

A team of South Australian researchers has cracked a rare gene variant for a disorder that sees a normal healthy child start to lose muscle tone and motor skills, ultimately losing the capacity to walk and use language.

16 Dec 2019

New gene technology shows 100-fold efficiency in targeting antibiotic-resistant bacteria

Taking advantage of powerful advances in CRISPR gene editing, scientists at the University of California San Diego have set their sights on one of society's most formidable threats to human health.

16 Dec 2019

New Method of Creating Synthetic DNA Nanopores

A team has created a synthetic DNA nanopore that can translocate protein-sized macromolecules across lipid bilayers selectively.

16 Dec 2019

Detection of mouth, throat cancer through saliva testing could become reality

Cancer of the throat and mouth (oropharyngeal cancers, OPC) are common, and are increasing in incidence especially among younger people. However, these are difficult to diagnose as they are not seen either by the patient or during routine medical examinations.

15 Dec 2019

Salk researchers uncover new function of mitochondria

Mitochondria, tiny structures present in most cells, are known for their energy-generating machinery. Now, Salk researchers have discovered a new function of mitochondria: they set off molecular alarms when cells are exposed to stress or chemicals that can damage DNA, such as chemotherapy.

15 Dec 2019