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.

1000 Genomes Project publishes comprehensive map of genetic variations in Nature journal

Small genetic differences between individuals help explain why some people have a higher risk than others for developing illnesses such as diabetes or cancer. Today in the journal Nature, the 1000 Genomes Project, an international public-private consortium, published the most comprehensive map of these genetic differences, called variations, estimated to contain approximately 95 percent of the genetic variation of any person on Earth.

28 Oct 2010

deCODE genetics publishes high resolution recombination map of human genome in Nature journal

Scientists from deCODE genetics today publish in Nature the highest resolution recombination map of the human genome yet developed. Recombination is the reshuffling of the genome that occurs in the formation of eggs and sperm: we inherit one version of each chromosome from each of our parents, and create novel blends of the two that we pass on to our offspring.

28 Oct 2010

Study reveals two enzymes help immune cells deploy pathogen-killing traps

A new study reveals that two enzymes help immune cells deploy pathogen-killing traps by unraveling and using the chromatin (DNA and its associated proteins) contained in the cells' nuclei to form defensive webs. The study appears online on October 25 in The Journal of Cell Biology.

26 Oct 2010

USPTO grants two additional patents to Ryogen

Ryogen LLC, a genomic research and development company focusing on genes with applications in biomedical research, has been awarded two additional patents on human genes.

20 Oct 2010

Genetic variations linked to early menopause: Study

In a new study scientists have found that particular genetic variations are linked to early menopause before the age of 45. They compared the DNA of more than 2,000 women who had experienced early menopause with that of women who had menopause later than 45 years.

19 Oct 2010

ESHRE study shows advantages of CGH technique in IVF procedure

Two women taking part in the world's first controlled study of a comprehensive genetic screening test before IVF have given birth to healthy babies. The babies, twin girls born in Germany in June and a singleton boy born in Italy in September, are the first deliveries in a pilot study of comparative genomic hybridisation (CGH) by microarray, a new method of screening oocytes for IVF for a full range of chromosomal disorders.

18 Oct 2010

Cempra to present data on solithromycin, TAKSTA at 48th Annual Meeting in Vancouver

Cempra Pharmaceuticals today announced poster presentations on its novel fluoroketolide antibiotic, solithromycin (CEM-101), and the Company's proprietary front-loading oral dosing regimen of sodium fusidate, TAKSTA (CEM-102) at the 48th Annual Meeting of the Infectious Diseases Society of America in Vancouver, British Columbia.

18 Oct 2010

Births in Italy and Germany from eggs tested by CGH

15 Oct 2010

New development of genetic tool to speed discovery of novel genes involved in cancer

Researchers have developed a genetic tool in mice to speed the discovery of novel genes involved in cancer. The system - called PiggyBac - has already been used by the team to identify novel candidate cancer-causing genes.

15 Oct 2010

Scientists identify mechanism that regulate nuclear size

Size matters when it comes to the nucleus of a cell, and now scientists have discovered the signals that control how big the nucleus gets. Nuclear size varies not only among different species, but also in different types of cells in the same species and at different times during development. In addition, cancer cells are known to develop larger nuclei as they become more malignant. Screening for cervical cancer, for example, involves looking for grossly distorted nuclei in cervical cells collected during a Pap smear.

15 Oct 2010

Scientists identify root cause of chromosomal errors and gene diversity

A team led by a scientist at the University of Pittsburgh School of Medicine has discovered a regulatory protein that influences where genetic material gets swapped between maternal and paternal chromosomes during the process of creating eggs and sperm. The findings, which shed light on the roots of chromosomal errors and gene diversity, appear in tomorrow's issue of Nature.

14 Oct 2010

Takeda, Envoy enter three-year research alliance to develop schizophrenia drug

Takeda Pharmaceutical Company Limited, a global pharmaceutical company, and Envoy Therapeutics Inc., a recently formed drug discovery company, today announced that they have formed a three-year research alliance aimed at discovering drugs for schizophrenia that will have greater efficacy and safety compared to current therapies.

11 Oct 2010

Cepheid collaborates with Novartis to commercialize BCR-ABL monitoring test

Cepheid today announced an exclusive collaboration with Novartis for the commercialization of a test for monitoring the BCR-ABL gene transcript in peripheral blood specimens from patients diagnosed with Philadelphia chromosome-positive chronic myelogenous leukemia (Ph+ CML). Together with other lab tests, monitoring levels of BCR-ABL transcripts in Ph+ CML patients will aid in patient management.

7 Oct 2010

Synthetic Genomics, JCVI announce formation of new company to develop next generation vaccines

The company Synthetic Genomics Inc. (SGI) and the not-for-profit research organization, the J. Craig Venter Institute (JCVI) today announced the formation of a new company, Synthetic Genomics Vaccines Inc. (SGVI).

7 Oct 2010

Patients with muscular dystrophy mount immune response to dystophin protein prior to gene therapy: Study

A clinical trial designed to replace the genetic defect causing the most common form of muscular dystrophy has uncovered an unexpected aspect of the disease. The trial, based on therapy designed by scientists at the University of North Carolina at Chapel Hill School of Medicine, showed that some patients mount an immune response to the dystrophin protein even before they have received the gene therapy.

7 Oct 2010

Cell aging is associated with reduced histone level

Like cats, human cells have a finite number of lives-once they divide a certain number of times they change shape, slow their pace, and eventually stop dividing, a phenomenon called cellular senescence.

4 Oct 2010

Crescendo Biologics successfully delivers triple knockout mice

Crescendo Biologics Limited today announces it has established a colony of engineered mice completely devoid of endogenous antibody polypeptides. The proprietary 'triple knockout' mice are believed to be unique and have the immunoglobulin heavy chain (IgH), kappa light chain and lambda light chain loci all functionally silenced by large-scale genomic deletion.

29 Sep 2010

Loss of INPP5A gene can predict cutaneous squamous cell carcinoma progression

The loss of a gene known as INPP5A could predict the onset, and track the progression, of an aggressive type of skin cancer, according to a study published today by the Mayo Clinic, Arizona Cancer Center, and the Translational Genomics Research Institute (TGen).

29 Sep 2010

Researchers find genetic variants that cause arthritis in breast cancer patients taking aromatase inhibitors

Mayo Clinic researchers and their international colleagues have discovered genetic variants that lead to severe arthritis for a subset of women when taking aromatase inhibitors to treat their breast cancer. This serious side effect is so painful that many women halt their lifesaving medication. The findings appear today in the online issue of Journal of Clinical Oncology.

28 Sep 2010

Signaling pathway inhibition enhances autologous bone marrow transplant: Research

Identification of a molecular communications pathway that influences the mobilization of hematopoietic (blood) stem cells could lead to targeted therapies for improving bone marrow transplant success rates.

27 Sep 2010

Chromosome 4 News and Research

Further Reading

1000 Genomes Project publishes comprehensive map of genetic variations in Nature journal

deCODE genetics publishes high resolution recombination map of human genome in Nature journal

Study reveals two enzymes help immune cells deploy pathogen-killing traps

USPTO grants two additional patents to Ryogen

Genetic variations linked to early menopause: Study

ESHRE study shows advantages of CGH technique in IVF procedure

Cempra to present data on solithromycin, TAKSTA at 48th Annual Meeting in Vancouver

Births in Italy and Germany from eggs tested by CGH

New development of genetic tool to speed discovery of novel genes involved in cancer

Scientists identify mechanism that regulate nuclear size

Scientists identify root cause of chromosomal errors and gene diversity

Takeda, Envoy enter three-year research alliance to develop schizophrenia drug

Cepheid collaborates with Novartis to commercialize BCR-ABL monitoring test

Synthetic Genomics, JCVI announce formation of new company to develop next generation vaccines

Patients with muscular dystrophy mount immune response to dystophin protein prior to gene therapy: Study

Cell aging is associated with reduced histone level

Crescendo Biologics successfully delivers triple knockout mice

Loss of INPP5A gene can predict cutaneous squamous cell carcinoma progression

Researchers find genetic variants that cause arthritis in breast cancer patients taking aromatase inhibitors

Signaling pathway inhibition enhances autologous bone marrow transplant: Research

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