Chromosome 4 News and Research

RSS

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.

Daily alcohol consumption ages brain

There are several studies looking at the effects of alcohol intake on the brain. Anew study adds to the existing knowledge. The large study with around 11,651 participants from United Kingdom shows that each gram of alcohol consumed could lead to around a week of aging of the brain.

2 Feb 2020

Research opens the door to healthier white bread

Group identifies the parts of the wheat genome that control fiber content of white flour – raises hope that products will be in supermarkets within five years.

31 Jan 2020

Successful gene therapy trial in patients with X-linked Chronic Septic Granulomatosis

American and British teams led by Drs Kohn (University of California, Los Angeles), Malech (NIH), Williams (Boston Children's) and Trasher (Great Ormond Street Institute of Child Health) published yesterday in Nature Medicine the conclusive results of a gene therapy trial conducted in the United States and Great Britain in 9 patients with X-linked Chronic Septic Granulomatosis (X-CGD), a rare and severe immune dysfunction. Six of them are free of treatment for complications generated by the disease.

28 Jan 2020

New gene correction therapy for hereditary muscular disease among children

Duchenne type muscular dystrophy is the most common hereditary muscular disease among children, leaving them wheelchair-bound before the age of twelve and reducing life expectancy.

27 Jan 2020

Healing and hope for families affected by fragile X in Eastern Europe

Mothers and fathers and their young children crowded into an old, government-run children's hospital in Belgrade, Serbia, colorful, cartoonish drawings covering its hallway walls. Parents struggled to soothe their anxious, wriggly boys and girls. But they were patient, polite. It was, after all, a day unlike any other. A day for hope.

23 Jan 2020

New discovery changes the understanding of gene expression

A group of University of Chicago scientists has uncovered a previously unknown way that our genes are made into reality.

22 Jan 2020

Oldest African DNA on record shines light on the deep human past

A team of international researchers, which includes a Saint Louis University Madrid anthropologist, dug deep to find some of the oldest African DNA on record, in a new study published in Nature.

22 Jan 2020

First randomized clinical trial compares targeted therapies for acute lymphoblastic leukemia

Researchers from St. Jude Children's Research Hospital and the Chinese Children's Cancer Group led the first randomized, Phase III clinical trial comparing targeted therapies for acute lymphoblastic leukemia (ALL) driven by the Philadelphia chromosome.

17 Jan 2020

3D structure of DNA is 'rewired' in hormone-resistant ER+ breast cancers

Epigenetic changes occur in the DNA of breast cancer cells that have developed a resistance to hormone therapy, an effective treatment for ER+ breast cancer, which accounts for 70% of all diagnoses.

16 Jan 2020

Princeton researchers uncover vital role played by a protein elevated in many cancers

Researchers at Princeton University have successfully recreated a key process involved in cell division in a test tube, uncovering the vital role played by a protein that is elevated in over 25% of all cancers.

14 Jan 2020

Study sheds new light on impact of common plasticizer on human reproductive health

Researchers at Harvard Medical School and the New York State Department of Health have discovered how a common plasticizer associated with human reproductive abnormalities likely does its damage at the molecular level.

10 Jan 2020

Common genetic defect in prostate cancer associated with worse prognosis

Like security screening to make sure nothing harmful makes its way into a crowded area, cells in the human body use checkpoints to control their growth and prevent harmful mutations from making their way into new cell populations and causing trouble.

9 Jan 2020

Dog study suggests that AAV in gene therapy could induce cancer

A gene therapy study in dogs has stirred up old fears that by using AAV in gene therapy, it may be increasing cancer chances.

8 Jan 2020

Drug trial seeking treatment option for hyperphagia in patients with Prader-Willi Syndrome

One in every 15,000 children is affected by Prader-Willi syndrome (PWS), a complex, genetic endocrine condition caused by a disorder of chromosome 15. It's non-inheritable, meaning the condition isn't passed down from a family member.

3 Jan 2020

Inserting end-modified DNA fragments with CRISPR-Cas9 yields highest efficiency

University of Illinois researchers achieved the highest reported rates of inserting genes into human cells with the CRISPR-Cas9 gene-editing system, a necessary step for harnessing CRISPR for clinical gene-therapy applications.

23 Dec 2019

New, faster and cheaper method to uncover genetic variants in single cells

Researchers led by the European Molecular Biology Laboratory in Heidelberg and the Center for Bioinformatics at Saarland University in Saarbrücken, Germany, have developed a cheaper and faster method to check for genetic differences in individual cells, which outperforms existing techniques with respect to the information received.

23 Dec 2019

Researchers develop powerful computer algorithm for large-scale genomic analysis

Haplotypes are a set of genetic variations that, located side by side on the same chromosome, are transmitted in a single group to the next generation. Their examination makes it possible to understand the heritability of certain complex traits, such as the risk of developing a disease.

20 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

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

Precision epigenome editing can repair genetic syndrome of intellectual disability

Using a targeted gene epigenome editing approach in the developing mouse brain, Johns Hopkins Medicine researchers reversed one gene mutation that leads to the genetic disorder WAGR syndrome, which causes intellectual disability and obesity in people.

13 Dec 2019