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.

Genomics of papillary thyroid carcinoma (PTC): an interview with Professor Thomas J. Giordano

There are two types of thyroid cells and therefore there are two broad types of thyroid cancer. Medullary carcinoma is derived from parafollicular or C cells, whereas follicular cells give rise to several types of thyroid cancers.

4 Feb 2015

Study could lead to potential therapeutic targets to treat Ewing Sarcoma

A University of Colorado Cancer Center study published in the journal PLoS One finds alterations in expression of genes PIK3R3 and PTEN, more commonly observed in adult tumors, in the rare, young-adult bone cancer Ewing Sarcoma, potentially offering ways to improve therapy.

4 Feb 2015

OGT study explores successful adoption of CytoSure ISCA array at Sheffield Children's NHS Foundation Trust

Oxford Gene Technology, The Molecular Genetics Company, explores how Sheffield Children's NHS Foundation Trust has seamlessly transferred to its CytoSure ISCA 8x60k platform, in a new case study entitled Evaluating and switching to CytoSure microarrays. As the result of a highly stringent National Health Service tender for the supply of oligo-based cytogenetics research arrays, CytoSure was selected based on the quality of data and analysis software.

From Oxford Gene Technology 4 Feb 2015

Researchers reveal new pathway for inhibiting growth of tumor cells tied to BRCA mutations

Inhibiting the action of a particular enzyme dramatically slows the growth of tumor cells tied to BRCA1 and BRCA2 genetic mutations which, in turn, are closely tied to breast and ovarian cancers, according to researchers at NYU Langone Medical Center.

3 Feb 2015

Emory researchers complete detailed maps of 184 duplications found in genomes

Copy number variations (deletions or duplications of large chunks of the genome) are a major cause of birth defects, intellectual disability, autism spectrum disorder and other developmental disorders. Still, geneticists can definitively say how a CNV, once discovered in someone's DNA, leads to one of these conditions in just a fraction of cases.

31 Jan 2015

Cypher Genomics, Sequenom sign development agreement for noninvasive prenatal tests

Cypher Genomics, Inc., the leading genome informatics company, and Sequenom, Inc., the leading molecular diagnostics company, today announced a development agreement for next generation noninvasive prenatal tests (NIPT).

22 Jan 2015

Study identifies gene that may become resistant to current testicular cancer treatments

A major research study has uncovered several new genetic mutations that could drive testicular cancer - and also identified a gene which may contribute to tumours becoming resistant to current treatments.

22 Jan 2015

ASCB honors UTSA adjunct professor with E. B. Wilson Medal

William Brinkley, adjunct professor of biology in the UTSA College of Sciences, was recently honored with the E. B. Wilson Medal from the American Society for Cell Biology. The medal, the organization's highest honor for far-reaching contributions to cell biology over a lifetime in science, was presented to Brinkley at the 54th Annual Meeting in Philadelphia.

22 Jan 2015

Researchers gain new insight into fragile X syndrome

Scientists have gained new insight into fragile X syndrome -- the most common cause of inherited intellectual disability -- by studying the case of a person without the disorder, but with two of its classic symptoms.

17 Jan 2015

TERT mutations may make smokers more susceptible to emphysema

Mutations in a gene that helps repair damaged chromosome ends may make smokers — especially female smokers — more susceptible to emphysema, according to results of a new study led by Johns Hopkins Kimmel Cancer Center researchers.

14 Jan 2015

PF-114 shows promise in therapy-resistant CML, Ph-positive ALL

PF-114, a selective tyrosine kinase inhibitor, is active against native and mutated forms of the BCR–ABL oncogene in Philadelphia chromosome-positive leukaemias, according to preclinical cellular and in vivo results published in Leukemia.

12 Jan 2015

Blast phase characteristics differ in TKI-, non-TKI–treated CML patients

Features of the blast phase, such as blast cell morphology and accompanying cytogenetic changes, vary between chronic myeloid leukaemia patients who received tyrosine kinase inhibitor therapy and those treated in the pre-TKI era, research shows.

12 Jan 2015

Study finds difference between results from IHC and quantitative molecular techniques

The cause of type 1 diabetes remains unknown. Several studies using immunohistochemistry (IHC) have independently reported hyperexpression of human leukocyte antigen (HLA) class I on pancreatic islet cells in young patients with recent-onset type 1 diabetes. Investigators have therefore suggested that HLA hyperexpression may be an important first step in the development of type 1 diabetes.

12 Jan 2015

New research sheds light on process that controls genes and determines cell fate

For a skin cell to do its job, it must turn on a completely different set of genes than a liver cell — and keep genes it doesn’t need switched off. One way of turning off large groups of genes at once is to send them to “time-out” at the edge of the nucleus, where they are kept quiet. New research from Johns Hopkins sheds light on how DNA gets sent to the nucleus’ far edge, a process critical to controlling genes and determining cell fate.

7 Jan 2015

New therapeutic approach shows potential for treating cancer

Case Western Reserve researchers have identified a two-pronged therapeutic approach that shows great potential for weakening and then defeating cancer cells.

31 Dec 2014

Offspring of mice treated with drug had delayed onset, reduced symptoms of Huntington's disease

Famine, drug abuse and even stress can "silence" certain genes, causing health problems in generations to come. Now scientists are wondering—could therapies that change gene expression in parents help their children?

23 Dec 2014

Chromosome X microduplications implicated in infancy-onset gigantism

Researchers report that heritable microduplications on chromosome Xq26.3 may underlie a “striking” form of gigantism with onset in late infancy, and reveal a candidate culprit gene.

22 Dec 2014

Research findings may lead to new treatment strategies for Ewing sarcoma

The genetic abnormality that drives the bone cancer Ewing sarcoma operates through two distinct processes - both activating genes that stimulate tumor growth and suppressing those that should keep cancer from developing. These findings by Massachusetts General Hospital investigators, published in the November issue of Cancer Cell, may lead to new therapies targeting these aberrant mechanisms.

18 Dec 2014

Tel Aviv University study throws spotlight on gene mutation responsible for premature ovarian failure

Premature ovarian failure, also known as primary ovarian insufficiency (POI), affects 1% of all women worldwide. In most cases, the exact cause of the condition, which is often associated with infertility, is difficult to determine.

18 Dec 2014

Experts expose fundamental role of chaos and complexity in biological information processing

The interdisciplinary approach to problems that till recently were addressed in the hermetic framework of distinct disciplines such as physics, informatics, biology or sociology constitutes today one of the most active and innovative areas of science, where fundamental issues meet problems of everyday concern.

14 Dec 2014

Chromosome 4 News and Research

Further Reading

Genomics of papillary thyroid carcinoma (PTC): an interview with Professor Thomas J. Giordano

Study could lead to potential therapeutic targets to treat Ewing Sarcoma

OGT study explores successful adoption of CytoSure ISCA array at Sheffield Children's NHS Foundation Trust

Researchers reveal new pathway for inhibiting growth of tumor cells tied to BRCA mutations

Emory researchers complete detailed maps of 184 duplications found in genomes

Cypher Genomics, Sequenom sign development agreement for noninvasive prenatal tests

Study identifies gene that may become resistant to current testicular cancer treatments

ASCB honors UTSA adjunct professor with E. B. Wilson Medal

Researchers gain new insight into fragile X syndrome

TERT mutations may make smokers more susceptible to emphysema

PF-114 shows promise in therapy-resistant CML, Ph-positive ALL

Blast phase characteristics differ in TKI-, non-TKI–treated CML patients

Study finds difference between results from IHC and quantitative molecular techniques

New research sheds light on process that controls genes and determines cell fate

New therapeutic approach shows potential for treating cancer

Offspring of mice treated with drug had delayed onset, reduced symptoms of Huntington's disease

Chromosome X microduplications implicated in infancy-onset gigantism

Research findings may lead to new treatment strategies for Ewing sarcoma

Tel Aviv University study throws spotlight on gene mutation responsible for premature ovarian failure

Experts expose fundamental role of chaos and complexity in biological information processing

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