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.

Researchers identify four new genetic regions associated with Behcet's disease

Researchers have identified four new regions on the human genome associated with Behcet's disease, a painful and potentially dangerous condition found predominantly in people with ancestors along the Silk Road.

7 Jan 2013

PSCA gene’s rs2294008 variant on T nucleotide may increase risk of bladder cancer

Patients who have inherited a specific common genetic variant develop bladder cancer tumors that strongly express a protein known as prostate stem cell antigen (PSCA), which is also expressed in many pancreatic and prostate tumors, according to research at the National Institutes of Health.

4 Jan 2013

Chromatin regulation not governed by a uniform histone code

In a novel use of gene knockout technology, researchers at the University of California, San Diego School of Medicine tested the same gene inserted into 90 different locations in a yeast chromosome - and discovered that while the inserted gene never altered its surrounding chromatin landscape, differences in that immediate landscape measurably affected gene activity.

4 Jan 2013

New insight into 22q11.2 deletion syndrome

Research out of the George Washington University (GW), published in the journal Proceedings of the National Academy of Sciences (PNAS), reveals another piece of the puzzle in a genetic developmental disorder that causes behavioral diseases such as autism.

4 Jan 2013

Researchers analyze impact of 3 unexpected sex determination factors

So, is it a girl or a boy? This is the first question parents ask at the birth of an infant. Though the answer is obvious, the mechanism of sex determination is much less so. Researchers at the University of Geneva (UNIGE) attempt to shed light on this complex process by identifying the crucial role played by insulin and IGF1 and IGF2 growth factors, a family of hormones known for its role in metabolism and growth.

3 Jan 2013

Whole Genome Mapping and NGS deliver high-quality reference genome of domestic goat

OpGen, Inc. today announced its ARGUS Whole Genome Mapping System technology was used in combination with next-generation sequencing (NGS) to produce the first, high-quality reference genome of the domestic goat.

26 Dec 2012

New light on genome replication

New York University biologists have identified how a vital protein is loaded by others into the centromere, the part of the chromosome that plays a significant role in cell division. Their findings shed new light on genome replication and may offer insights into the factors behind the production of abnormal numbers of chromosomes.

25 Dec 2012

Scientists sequence complete genome of leeches

Leeches, despite the yuck factor, have captured the hearts of two University of California, Berkeley, scientists who are part of a team that this week is publishing the leech's complete genome sequence.

21 Dec 2012

BubR1 and its associated regulators promising targets for aging disorders and cancer

A new series of studies in mouse models by Mayo Clinic researchers uncovered that the aging process is characterized by high rates of whole-chromosome losses and gains in various organs, including heart, muscle, kidney and eye, and demonstrate that reducing these rates slows age-related tissue deterioration and promotes a healthier life span. The findings appear in today's online issue of Nature Cell Biology.

18 Dec 2012

CNIO creates 2 new databases to study the human genome

Scientists from the Structural Computational Biology Group at the Spanish National Cancer Research Centre (CNIO), led by Alfonso Valencia, together with French and American researchers, have published recently two articles in the journal Nucleic Acid Research (NAR) that introduce two new databases for studying the human genome.

18 Dec 2012

Klerokinesis may prevent some cancers from developing

Researchers at the University of Wisconsin Carbone Cancer Center have discovered a new form of cell division in human cells.

18 Dec 2012

Study investigates muscle weakness in mouse model of Down syndrome

It is well known that people with Down syndrome (DS) suffer from marked muscle weakness. Even the simple tasks of independent living, such as getting out of a chair or climbing a flight of stairs, can become major obstacles. This can reduce the quality of life for those with DS and lead to a loss of independence. Now, a new study sheds light on some of the suspected causes of muscle weakness.

18 Dec 2012

Researchers identify possible heredity mechanism that predisposes children to ALL

Researchers at the Sainte-Justine University Hospital Center and the University of Montreal have found a possible heredity mechanism that predisposes children to acute lymphoblastic leukemia (ALL), the most common type of blood cancer in children. According to their findings published in Genome Research, the presence of a genetic defect in the egg or sperm from which children having ALL arise may be a prerequisite for the disease to develop.

17 Dec 2012

Maryland researchers launch groundbreaking study into spread of drug-resistant malaria in Burma

University of Maryland School of Medicine researchers have launched groundbreaking research into the spread of potentially deadly drug-resistant malaria in the developing Southeast Asian nation of Myanmar, also known as Burma.

17 Dec 2012

Iclusig gets FDA approval for two rare blood and bone marrow diseases

The U.S. Food and Drug Administration today approved Iclusig (ponatinib) to treat adults with chronic myeloid leukemia and Philadelphia chromosome positive acute lymphoblastic leukemia (Ph+ ALL), two rare blood and bone marrow diseases.

15 Dec 2012

FDA grants accelerated approval to ARIAD’s Iclusig for treatment of CML, Ph+ ALL

ARIAD Pharmaceuticals, Inc. today announced that following a priority review, the U.S. Food and Drug Administration (FDA) has granted accelerated approval of Iclusig (ponatinib) for the treatment of adult patients with chronic, accelerated or blast phase chronic myeloid leukemia (CML) that is resistant or intolerant to prior tyrosine kinase inhibitor (TKI) therapy or Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) that is resistant or intolerant to prior TKI therapy.

14 Dec 2012

Dantrolene may help combat Duchenne muscular dystrophy in boys

Drugs are currently being tested that show promise in treating patients with Duchenne muscular dystrophy (DMD), an inherited disease that affects about one in 3,600 boys and results in muscle degeneration and, eventually, death.

13 Dec 2012

Bacteriophages may play an important role in competition among bacterial strains

Unique viruses called bacteriophages may play an important role in competition among bacterial strains, influencing the overall ecosystem of the human intestine, scientists at The University of Texas at Arlington and UT Southwestern Medical Center say.

11 Dec 2012

GeneTex to introduce new Histone H3 antibody

GeneTex, a leading manufacturer of antibodies and antibody-related reagents, is set to launch a new antibody against phosphorylated Histone H3.

11 Dec 2012

UNM study to understand why and how DNA repair mechanisms go awry in cancer cells

DNA, like houses and cars, needs ongoing maintenance. Rays of ultraviolet sunlight, chemical pollutants and normal biochemical processes in the cell can damage it. Cells routinely repair this damage before making proteins or copying DNA for cell division. The repairs are remarkably accurate in normal cells but cancer cells make far more mistakes in fixing their DNA.

11 Dec 2012

Chromosome 4 News and Research

Further Reading

Researchers identify four new genetic regions associated with Behcet's disease

PSCA gene’s rs2294008 variant on T nucleotide may increase risk of bladder cancer

Chromatin regulation not governed by a uniform histone code

New insight into 22q11.2 deletion syndrome

Researchers analyze impact of 3 unexpected sex determination factors

Whole Genome Mapping and NGS deliver high-quality reference genome of domestic goat

New light on genome replication

Scientists sequence complete genome of leeches

BubR1 and its associated regulators promising targets for aging disorders and cancer

CNIO creates 2 new databases to study the human genome

Klerokinesis may prevent some cancers from developing

Study investigates muscle weakness in mouse model of Down syndrome

Researchers identify possible heredity mechanism that predisposes children to ALL

Maryland researchers launch groundbreaking study into spread of drug-resistant malaria in Burma

Iclusig gets FDA approval for two rare blood and bone marrow diseases

FDA grants accelerated approval to ARIAD’s Iclusig for treatment of CML, Ph+ ALL

Dantrolene may help combat Duchenne muscular dystrophy in boys

Bacteriophages may play an important role in competition among bacterial strains

GeneTex to introduce new Histone H3 antibody

UNM study to understand why and how DNA repair mechanisms go awry in cancer cells

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