Chromosome 7 News and Research

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Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 7, one copy inherited from each parent, form one of the pairs. Chromosome 7 spans about 159 million DNA building blocks (base pairs) and represents more than 5 percent of the total DNA in cells.

Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 7 likely contains about 1,150 genes.

Genes on chromosome 7 are among the estimated 20,000 to 25,000 total genes in the human genome.

Study reveals molecular cause underlying rare genetic disorder

Virginia Tech scientists have revealed how a nonfunctioning version of an ordinary gene impairs brain structure and function. The findings help explain a genetic form of microcephaly -- a condition where babies' heads are small and grow more slowly than their peers.

27 Jul 2020

Researchers use new approach to unravel the mechanisms that lie behind tetraploidy

Cell division is a fundamental process that organisms need to reproduce, grow, and make repairs. But when an error disrupts this complex biological process, cellular abnormalities can lead to diseases, such as cancer, where cells are enabled to grow and divide out of control.

25 Jul 2020

Researchers identify TLR7 gene that predisposes elderly patients to severe COVID-19

Current observations suggest that the coronavirus SARS-CoV-2 causes severe symptoms mainly in elderly patients with chronic disease.

25 Jul 2020

New technology could speed up drug discovery to fight tuberculosis

A new technology that combines high throughput imaging and machine learning could speed discovery of drugs to fight tuberculosis, which for generations has killed more people worldwide than any other disease caused by a single agent-;4,000 people every day.

23 Jul 2020

Neo-self antibody could be a major cause of recurrent pregnancy loss

A research group centered around Kobe University Graduate School of Medicine's Professor YAMADA Hideto and Associate Professor TANIMURA Kenji (Department of Obstetrics and Gynecology), and Professor ARASE Hisashi et al. of Osaka University's Research Institute for Microbial Diseases (RIMD) have revealed for the first time in the world the high frequency of a novel autoantibody in women suffering from recurrent pregnancy loss.

23 Jul 2020

Neuroscientists map brain's sensory gatekeeper in unprecedented detail

Many people with autism experience sensory hypersensitivity, attention deficits, and sleep disruption. One brain region that has been implicated in these symptoms is the thalamic reticular nucleus (TRN), which is believed to act as a gatekeeper for sensory information flowing to the cortex.

22 Jul 2020

Researchers identify specific target sites for DNA methylases

DNA methylation performs an essential function in mammalian ontogeny. It is also known that abnormalities in this process cause the development of cancers such as leukemia.

22 Jul 2020

Advanced cryo-EM imaging reveals high-resolution structure of viral RNA replication complex

For the first time, scientists at the Morgridge Institute for Research have generated near atomic resolution images of a major viral protein complex responsible for replicating the RNA genome of a member of the positive-strand RNA viruses, the large class of viruses that includes coronaviruses and many other pathogens.

20 Jul 2020

New test uses a single drop of blood to rapidly detect radiation sickness

A new proof-of-concept study reports evidence that a new testing method has the potential to rapidly identify radiation sickness based on biomarkers measured through a single drop of blood.

15 Jul 2020

Nix gene can help develop future mosquito control techniques

Virginia Tech researchers have proven that a single gene can convert female Aedes aegypti mosquitoes into fertile male mosquitoes and identified a gene needed for male mosquito flight.

15 Jul 2020

Overzealous guardians in the cells could increase cancer risk

Researchers at the UiO and OUS have discovered how destructive changes occur in our genome. This could lead to cancer. Their results have been published in the journal Nature Cell Biology.

9 Jul 2020

Study of lysosomal function during mitosis reveals new biomarker for chromosomal instability

A team from the Bellvitge Biomedical Research Institute and the University of Barcelona, in collaboration with a researcher from the Mayo Clinic and the University of Minnesota, have described that lysosomes and autophagy processes are active during mitosis and are necessary for a correct cell division.

7 Jul 2020

Risk of severe COVID-19 in ~50 kb genomic segment inherited from Neanderthals

Researchers have found that a small fragment of the genetic code that has been inherited by modern humans from Neanderthals could carry the secret of why some people succumb to a severe form of COVID-19 requiring hospitalization, while others recover.

7 Jul 2020

New technique to sort out complex interactions unique to prostate cancer cells

UT Southwestern researchers have identified vast webs of small snippets of the genome that interact with each other and with genes to promote prostate cancer.

7 Jul 2020

Researchers create new tool to identify cancer-causing mutations lurking in 98% of the genome

Gene coding regions constitute 2% of the human genome. St. Jude Children's Research Hospital scientists have developed a computational tool to identify alterations that drive tumor formation in the remaining 98% of the genome.

6 Jul 2020

NPHS1 is a disease-susceptibility gene for steroid-sensitive nephrotic syndrome, reveals study

An international research collaboration, including Professor IIJIMA Kazumoto et al. (of the Department of Pediatrics, Kobe University Graduate School of Medicine) has revealed that NPHS1 is a disease-susceptibility gene for steroid-sensitive nephrotic syndrome in children.

3 Jul 2020

New scanner to detect early signs of bladder cancer could save thousands of lives

Thousands of lives lost to bladder cancers each year could be saved thanks to a new scanner that uses photonics to illuminate parts of the tissue that are currently impossible to visualize.

3 Jul 2020

Glitches in DNA replication have important implications for treating cancer

USC researchers peering deep inside a living cell have discovered something surprising: Its system for preventing genetic damage linked to diseases can fail so badly that the cell would be better off without it.

30 Jun 2020

Scientists discover osmotic stress as stimulator of cellular waste disposal

Cellular waste disposal, where autophagy and lysosomes interact, performs elementary functions, such as degrading damaged protein molecules, which impair cellular function, and reintroducing the resulting building blocks such as amino acids into the metabolic system.

29 Jun 2020

Researchers identify new protein complex that regulates chromosome separation

Researchers from the University of Tsukuba have identified a novel protein complex that regulates Aurora B localization to ensure that chromosomes are correctly separated during cell division

26 Jun 2020