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.

Chromosomally unstable bowel cancer cells more resistant to chemotherapy treatments, targeted drugs

Cancer Research UK scientists have made an important step towards developing personalised bowel cancer treatment by identifying which tumours are more likely to become drug resistant, according to research published in Cancer Research today.

1 Mar 2011

Global Genes Project, 46NYC introduce t-shirts to create awareness about lack of drug treatments for rare disease

Wear That You Care. Today is Rare Disease Day and 46NYC is helping raise awareness for an important cause – this time the drug development crisis facing the rare disease patient community worldwide.

28 Feb 2011

Study: Rare genetic mutations may provide clues to improve treatment for schizophrenia

Scientists are eyeing a rare genetic glitch for clues to improved treatments for some people with schizophrenia - even though they found the mutation in only one third of 1 percent of patients.

25 Feb 2011

Foreign-born scientists and artists receive sixth annual Vilcek Prize for Biomedical Science

The Vilcek Foundation is pleased to announce the 2011 winners of its annual prizes honoring the contributions of foreign-born scientists and artists.

24 Feb 2011

Research: Gene mutation linked to schizophrenia may aid in new drug development

In a major advance for schizophrenia research, an international team of scientists led by the University of California, San Diego School of Medicine and involving Trinity College Dublin researchers has identified a gene mutation strongly linked to schizophrenia that may be an important new target for the development of drug therapies.

24 Feb 2011

NanoString launches fixed-panel assay product for human molecular karyotyping

NanoString Technologies, Inc., a privately held life sciences company marketing a complete solution for detecting and counting large sets of target molecules in biological samples, today announced the first fixed-panel assay product to be developed on its Copy Number Variation detection platform - the nCounter Human Karyotype Panel.

From NanoString Technologies 22 Feb 2011

Researchers discover new 'driver gene' in oestrogen receptor positive breast cancer

CANCER RESEARCH UK scientists have pinpointed a key cancer-causing gene that, when overactive, triggers a particularly aggressive type of breast cancer to develop.

18 Feb 2011

Metallic copper surfaces kill bacteria on contact

Metallic copper surfaces kill microbes on contact, decimating their populations, according to a paper in the February 2011 issue of the journal Applied and Environmental Microbiology. They do so literally in minutes, by causing massive membrane damage after about a minute's exposure, says the study's corresponding author, Gregor Grass of the University of Nebraska, Lincoln. This is the first study to demonstrate this mechanism of bacteriocide.

17 Feb 2011

Break-induced Replication more likely to cause genetic mutation than normal cell repair

Researchers from Indiana University-Purdue University Indianapolis and Umea- University report in a study published in the February 15, 2011, issue of PLoS Biology that a method by which cells repair breaks in their DNA, known as Break-induced Replication, is up to 2,800 times more likely to cause genetic mutation than normal cell repair.

16 Feb 2011

Researchers develop new DNA test for accurate detection of Turner syndrome in children

As a child grows, a short stature is not usually cause for concern, but it is often the only sign of a condition called Turner syndrome. Prevalent in girls, Turner syndrome is a genetic defect that short-circuits normal growth and leads to cardiac and renal problems. It is not commonly detected until age 10 or older when a youngster's unusually short height raises suspicions.

16 Feb 2011

New study establishes link between coronary artery disease and genetic susceptibility

A new study involving researchers at the Scripps Translational Science Institute and Scripps Health patients reveals major scientific progress in understanding the mechanism of heart disease at the molecular and genomic levels. STSI is an initiative of Scripps Health in collaboration with The Scripps Research Institute.

14 Feb 2011

DNA sequencing of maternal blood plasma can accurately detect trisomy 21

In a study published online today in the American Journal of Obstetrics & Gynecology, researchers from the Sequenom Center for Molecular Medicine confirmed that DNA sequencing of maternal blood plasma could accurately detect trisomy 21.

10 Feb 2011

Scientists develop novel approach to detect long-distance chromosomal interactions for CAD

The discovery that a "gene desert" on chromosome 9 was a hotspot for coronary artery disease (CAD) risk was among the highlights of findings produced recently by genome-wide association studies, which compare the genomes of many people for genetic variations and have been broadly used in the past few years to study hundreds of diseases and complex traits. Gene deserts are large genomic segments devoid of genes.

10 Feb 2011

Scientists reprogram marrow cells from patient with chronic myeloid leukemia

By coaxing healthy and diseased human bone marrow to become embryonic-like stem cells, a team of Wisconsin scientists has laid the groundwork for observing the onset of the blood cancer leukemia in the laboratory dish.

4 Feb 2011

International scientist team identifies gene mutation strongly linked to schizophrenia

In a major advance for schizophrenia research, an international team of scientists, led by Jonathan Sebat, PhD, assistant professor of psychiatry and cellular and molecular medicine at the University of California, San Diego School of Medicine, has identified a gene mutation strongly linked to the brain disorder - and a signaling pathway that may be treatable with existing compounds.

3 Feb 2011

Research provides new clues for compulsive behavior, cognitive defects linked with LND

Research from the University of California, San Diego School of Medicine provides new clues for the compulsive behavior and cognitive defects associated with a rare childhood neurological disease called Lesch-Nyhan Disease.

29 Jan 2011

University of California study may shed light on human ability to adapt hypoxia

In an important study that may shed light on human ability to adapt to hypoxia, or inadequate levels of oxygen, researchers at the University of California, San Diego School of Medicine have proven that the genome of flies exposed to long-term hypoxia are changed to permanently affect gene expression.

24 Jan 2011

Researchers identify PBRM1 gene mutation in one in three patients with common form of renal cancer

In a collaborative project involving scientists from three continents, researchers have identified a gene that is mutated in one in three patients with the most common form of renal cancer.

20 Jan 2011

New Down syndrome non-invasive test for ‘mums-to-be’ on the horizon

According to experts a simple DNA test for Down syndrome could save nearly all pregnant women from invasive tests like amniocentesis. Usually 3% to 5% of pregnant women in the UK or some 30,000 women have to undergo invasive tests like amniocentesis that increases the risk of miscarriage to 1%. The new DNA blood test could bring this down to 0.1%, according to a study in the British Medical Journal.

12 Jan 2011

New mechanisms of resistance to chemotherapy among leukemia patients

The interplay between a major tumor-suppressing gene, a truncated chromosome and two sets of microRNAs provides a molecular basis for explaining the less aggressive form of chronic lymphocytic leukemia, an international team of researchers reports today in the Jan. 4 edition of the Journal of the American Medical Association.

10 Jan 2011