Chromosome 4 News and Research

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Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 4, one copy inherited from each parent, form one of the pairs. Chromosome 4 spans more than 191 million DNA building blocks (base pairs) and represents more than 6 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 4 likely contains between 1,300 and 1,600 genes.

Genes on chromosome 4 are among the estimated 20,000 to 25,000 total genes in the human genome.

UCLA scientists discover reason for higher rates of autoimmune disease in women than men

UCLA scientists have discovered one reason why autoimmune diseases are more prevalent in women than in men.

11 Dec 2019

Epigenome editing could repair genetic brain disorder

A new study published in the journal Nature Communications shows that it may be possible to reverse gene mutations that cause brain disorders, using a very precisely targeted epigenome editing technique. This type of gene editing does not change the gene’s DNA sequence itself but is focused on correcting epigenome changes only. The condition that was corrected in the study is called the WAGR syndrome and is associated with obesity and intellectual disability in people.

11 Dec 2019

Genetic alteration increases risk of Autism and Tourette's impacts on the brain

Lancaster University researchers have discovered, for the first time, how a genetic alteration that increases the risk of developing Autism and Tourette's impacts on the brain.

10 Dec 2019

Combination therapy is safe and effective for older patients diagnosed with acute lymphoblastic leukemia

A study led by The University of Texas MD Anderson Cancer Center showed that treatment combining lower doses of chemotherapy with the monoclonal antibody inotuzumab ozogamicin (INO), with or without the drug blinatumomab, is safe and effective in patients over 60 years of age who were newly diagnosed with a high-risk form of acute lymphoblastic leukemia (ALL) known as Philadelphia chromosome-negative ALL.

10 Dec 2019

Kanazawa University researchers describe genetic typing of Pseudomonas putida

Pseudomonas putida is a bacterium occuring in soil, aquatic environments and plants. Although the virulence of Pseudomonas p. -- the ability of the bacterium to infect its host and inflict a disease -- is considered to be low, infection in severely ill patients can be lethal. P. putida strains (also called isolates) have been found in hospitals, e.g. in urine, blood or wound discharge from patients, and such clinical isolates have been found to display resistance to drugs.

6 Dec 2019

New discovery on chromosomal function may shed light on human health and disease

Researchers have discovered key mechanisms and structural details of a fundamental biological process-;how a cell nucleus and its chromosomal material reorganizes itself after cell division

5 Dec 2019

Tulane neuroscientist receives $2.9 million NIH grant to launch the Telomere Research Network

Tulane University neuroscientist Dr. Stacy Drury will launch the Telomere Research Network to establish best practices for measuring telomere length and how it can be used as a sentinel of aging-related disease risk.

4 Dec 2019

New vaccine against bovine TB

A new study published in the journal Scientific Reports says that for the first time a vaccine has been created against bovine tuberculosis that can be given without affecting the ability to diagnose tuberculosis later using the PPD skin test.

28 Nov 2019

Extra DNA scooped up alongside cancer-causing genes helps drive tumor growth

One of the ways a cancer-causing gene works up enough power to turn a normal cell into a cancer cell is by copying itself over and over, like a Xerox machine.

21 Nov 2019

Research team publishes findings from study of TAF1 syndrome

An international, multidisciplinary research team from more than 50 institutions, led by geneticist and psychiatrist Gholson Lyon, MD, PhD, of the New York State Office for People With Developmental Disabilities' Institute for Basic Research in Developmental Disabilities, today announced publication of findings from its study of the rare disease TAF1 syndrome.

21 Nov 2019

MU researchers describe Down syndrome-associated catatonia

Down syndrome, due to an extra chromosome 21, occurs in 250,000 children and adults in the United States, making it the country's most common chromosomal disorder. Inherited heart defects, thyroid cancer, celiac disease and developmental disabilities are common Down syndrome complications.

19 Nov 2019

Scientists reverse learning and memory deficits with drugs in animal model of Down syndrome

In a surprising finding using the standard animal model of Down syndrome (DS), scientists were able to correct the learning and memory deficits associated with the condition -- the leading genetic cause of cognitive disability and the most frequently diagnosed chromosomal disorder in the U.S. -- with drugs that target the body's response to cellular stresses.

15 Nov 2019

Crick study reveals vital protective role of telomere t-loops

Loops at the ends of telomeres play a vital protective role preventing irretrievable damage to chromosomes, according to new research from the Crick.

From The Francis Crick Institute 12 Nov 2019

Adult SMA patients treated with Nusinersen show improvement in motor function

A study published in the Journal of Neuromuscular Diseases presents the first evidence of mild improvement or stabilization of motor and respiratory function in adults with spinal muscular atrophy type 3 (SMA3) treated with Nusinersen, which was the case even in patients who have had the disease for 20 years or more.

11 Nov 2019

DNA data provides scientific knowledge on historical extra-pair paternity in Western Europe

These days it's easy to resolve questions about paternity with over-the-counter test kits. Now, researchers have put DNA evidence together with long-term genealogical data to explore similar questions of biological fatherhood on a broad scale among people living in parts of Western Europe over the last 500 years.

11 Nov 2019

Children with Down syndrome at greater risk of an associated form of arthritis

A new study finds that children with Down syndrome are at an increased risk of an associated form of arthritis.

10 Nov 2019

Study uncovers cause for spatial-memory deficits in people with Down syndrome

Professor Juan Lerma's group, from the UMH-CSIC Institute of Neurosciences, in Alicante, has identified the gene called GRIK1, fundamental in the balance between excitation and inhibition in the brain, as one of the causes for people with Down syndrome having spatial orientation problems.

1 Nov 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

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

Study identifies a kinase as potential target to treat heart failure

An unexplored kinase in heart muscle cells may be a good target to treat heart failure, a disease that is only incrementally delayed by existing therapies.