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.

New insight into oocyte chromosome abnormalities

Ovarian stimulation undertaken by women of advanced maternal age receiving fertility treatment may be disrupting the normal pattern of meiosis - a critical process of chromosome duplication followed by two specialised cell divisions in the production of oocytes and sperm - and leading to abnormalities of chromosome copy numbers that result in IVF failure, pregnancy loss or, more rarely, the birth of affected children with conditions such as Down's syndrome, which is caused by the inheritance of three copies of chromosome 21.

4 Jul 2011

Scientists discover enzyme that can regulate breast cancer development

Researchers at Cold Spring Harbor Laboratory (CSHL) have identified an enzyme that appears to be a significant regulator of breast cancer development. Called PTPN23, the enzyme is a member of a family called protein tyrosine phosphatases, or PTPs, that plays a fundamental role in switching cell signaling on and off.

1 Jul 2011

USPTO awards patent for key therapeutic ingredient in CNVN202 targeted molecular cancer therapy

Convergen LifeSciences, Inc. announced today that a United States Patent has been awarded by the U.S. Patent and Trademark Office jointly to The University of Texas System Board of Regents and The Secretary, U.S. Department of Health and Human Services.

29 Jun 2011

Health Canada approves Tasigna for newly diagnosed Philadelphia chromosome-positive CML

Over a decade ago, Canadian patients diagnosed with chronic myeloid leukemia (CML), celebrated when PrGleevec (imatinib mesylate) was approved in Canada.

27 Jun 2011

Study links genetic variants in MHC region with risk of lupus in African American women

Researchers from Boston University's Slone Epidemiology Center have found four new genetic variants in the major histocompatibility complex (MHC) that confer a higher risk of systemic lupus erythemathosus in African American women.

27 Jun 2011

In vivo genome editing restores hemostasis in mouse model of blood clotting disorder

Using an innovative gene therapy technique called genome editing that hones in on the precise location of mutated DNA, scientists have treated the blood clotting disorder hemophilia in mice.

27 Jun 2011

CBMi creates iPad app for exploring human genomic information

Navigating the human genome with software that you can view on an iPad® sounds pretty impressive, until perhaps you reflect that nature has already encoded trillions of copies of this in your chromosomes. Then again, printing that data using ink and paper would produce a mind-staggering pile of pages—so viewing it on an iPad® may be impressive after all.

24 Jun 2011

AIS introduces Spectral karyotyping

AIS introduces Spectral karyotyping (SKY®) equipment, designed and manufactured by ASI, a leading developer of comprehensive solutions for pathology and cytogenetics. Spectral karyotyping (SKY®) is ASI’s novel addition to the cytogenetic tool kit. It is based on a unique electro-optical hardware that enables measuring the spectral image of a metaphase, previously stained, such that each chromosome class has a different color (created typically from different combinations of 5 or more basic dyes).

23 Jun 2011

Nine young clinical investigators earn recognition from Damon Runyon Cancer Research Foundation

The Damon Runyon Cancer Research Foundation named five new Damon Runyon Clinical Investigators at its spring 2011 Clinical Investigator Award Committee review.

22 Jun 2011

Genetic mutation linked to peripartum cardiomyopathy during pregnancy

Researchers at the Intermountain Medical Center Heart Institute in Salt Lake City have identified the first genetic mutation ever associated with a mysterious and potentially devastating form of heart disease that affects women in the final weeks of pregnancy or the first few months after delivery.

22 Jun 2011

BGI releases first complete map of Germany E. coli O104:H4 genome

Building upon previous efforts producing a high-quality de novo genome assemblies of deadly 2011 E. coli O104:H4 outbreak strain, the BGI and their collaborators at the University Medical Centre Hamburg-Eppendorf have now released the first complete map of the genome and plasmids without any assembly gaps.

17 Jun 2011

Placental growth factor also plays a role in chronic myeloid leukemia

Chronic myeloid leukemia (CML) is a particular form of leukemia or cancer of the bone marrow, which can be treated with targeted imatinib. However, in some cases this medicine has no effect. Researchers at the VIB Vesalius Research Centre, K.U. Leuven, under the direction of Peter Carmeliet, have investigated the role of placental growth factor (PlGF) in mice with CML.

15 Jun 2011

Ventana Medical receives FDA approval for new breast cancer genetic test

The U.S. Food and Drug Administration today approved a new genetic test that will help health care professionals determine if women with breast cancer are HER2-positive and, therefore, candidates for Herceptin, a commonly used breast cancer treatment.

15 Jun 2011

Research reveals how humans of different ancestry process polyunsaturated fat

Over the past decade, much progress has been made regarding the understanding and promise of personalized medicine. Scientists are just beginning to consider the impact of gene-diet interactions in different populations in regards to disease prevention and treatment.

15 Jun 2011

Researchers investigate the role of PlGF in mice with chronic myeloid leukemia

14 Jun 2011

Autism caused by hundreds of different genetic mutations: Study

New research shows that autism is not caused by one or two gene defects but probably by hundreds of different mutations, many of which arise spontaneously. This comes from the study that has examined the genes of more than 1,000 families.

9 Jun 2011

Single molecule telomerase activator could extend human cell life indefinitely

When expressed (turned on), the gene (hTERT) located on Chromosome number 5p15.33 activates the enzyme telomerase. Human cells can keep living and dividing indefinitely when telomerase is continually present; i.e. the cells become immortal. Telomerase Activation Sciences, Inc. (T.A. Sciences®) announces TA-65® can extend human cell life indefinitely. TA-65® is a single molecule telomerase activator that turns on the Immortality Gene under controlled laboratory conditions.

8 Jun 2011

Mother's blueberry consumption can improve mammary gland health in offspring

U.S. Department of Agriculture (USDA)-funded studies of mammary gland development in laboratory rats fed blueberries or other foods of interest may aid breast cancer research.

8 Jun 2011

Increased blood clotting tendency linked to elevated bowel cancer risk

Back in the mid 19th century, a French doctor, Armand Trousseau, discovered a connection between cancer and thrombosis - the formation of often dangerous blood clots that can lead to venous occlusion.

7 Jun 2011

Scientists identify chromosomal mutation responsible for excessive hair growth

Researchers in the Keck School of Medicine of the University of Southern California (USC), together with scientists in Beijing, China, have discovered a chromosomal mutation responsible for a very rare condition in which people grow excess hair all over their bodies.

4 Jun 2011

Chromosome 4 News and Research

Further Reading

New insight into oocyte chromosome abnormalities

Scientists discover enzyme that can regulate breast cancer development

USPTO awards patent for key therapeutic ingredient in CNVN202 targeted molecular cancer therapy

Health Canada approves Tasigna for newly diagnosed Philadelphia chromosome-positive CML

Study links genetic variants in MHC region with risk of lupus in African American women

In vivo genome editing restores hemostasis in mouse model of blood clotting disorder

CBMi creates iPad app for exploring human genomic information

AIS introduces Spectral karyotyping

Nine young clinical investigators earn recognition from Damon Runyon Cancer Research Foundation

Genetic mutation linked to peripartum cardiomyopathy during pregnancy

BGI releases first complete map of Germany E. coli O104:H4 genome

Placental growth factor also plays a role in chronic myeloid leukemia

Ventana Medical receives FDA approval for new breast cancer genetic test

Research reveals how humans of different ancestry process polyunsaturated fat

Researchers investigate the role of PlGF in mice with chronic myeloid leukemia

Autism caused by hundreds of different genetic mutations: Study

Single molecule telomerase activator could extend human cell life indefinitely

Mother's blueberry consumption can improve mammary gland health in offspring

Increased blood clotting tendency linked to elevated bowel cancer risk

Scientists identify chromosomal mutation responsible for excessive hair growth

Shaping the Future of Neuroscience: A Conversation with Atlas Antibodies on the MolBoolean™ and the Impact of SfN 2024

How the Arts Reshape Brain Function: Susan Magsamen on the Future of Neuroaesthetics

Inside the Alzheimer's Association: Dr. Heather Snyder on Driving Research and Collaboration

Latest News