Chromosome 3 News and Research

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Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 3, one copy inherited from each parent, form one of the pairs. Chromosome 3 spans almost 200 million base pairs (the building blocks of DNA) and represents approximately 6.5 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 3 likely contains between 1,100 and 1,500 genes.

Genes on chromosome 3 are among the estimated 20,000 to 25,000 total genes in the human genome.

New discovery reveals twisting action of molecular motors in the DNA

Scientists from the Kavli Institute of Delft University of Technology and the IMP Vienna Biocenter discovered a new property of the molecular motors that shape our chromosomes.

16 Dec 2024

Novel drug combination shows promise for CLL treatment

A novel, fixed-duration drug combination - consisting of a second-generation BTK inhibitor, called acalabrutinib, plus a BCL-2 inhibitor (venetoclax), with or without a third blood cancer drug - shows deep and durable responses in patients with chronic lymphocytic leukemia (CLL), Dana-Farber Cancer Institute investigator Jennifer Brown, MD, PhD, reports at the 66th American Society for Hematology (ASH) Annual Meeting and Exposition, on behalf of the trial investigators.

9 Dec 2024

X-chromosome study reveals hidden genetic links to Alzheimer’s disease

A groundbreaking study explores the overlooked X-chromosome’s role in Alzheimer’s disease, revealing seven genetic loci linked to neurodegenerative decline and cognitive reserve.

9 Dec 2024

Study reveals how DNA folding drives gene activity bursts

Researchers at Kyushu University have revealed how spatial distance between specific regions of DNA is linked to bursts of gene activity.

6 Dec 2024

Study: Brain volume changes correlate with social behavior differences in psychiatric conditions

A study published in Molecular Psychiatry found that brain volume changes correlate with social behavior differences in psychiatric conditions such as autism spectrum disorder and schizophrenia.

6 Dec 2024

Study uncovers dangerous side effects of AZD7648 in gene editing

Genome editing with various CRISPR-Cas molecule complexes has progressed rapidly in recent years.

5 Dec 2024

Prenatal cfDNA testing uncovers hidden cancers in pregnant individuals

Researchers at the National Institutes of Health (NIH) found previously undetected cancers in 48.6% of pregnant people who had abnormal results for prenatal cell-free DNA (cfDNA) testing used to screen for chromosomal disorders in the fetus.

4 Dec 2024

Ultrasound-controlled CRISPR offers precision in treating genetic disorders

Thanks to CRISPR, our medical specialists will soon have unprecedented control over how they treat and prevent some of our most challenging genetic disorders and diseases.

4 Dec 2024

Tumor secreted DNA triggers immune response against liver metastasis Special...

Specially packaged DNA secreted by tumor cells can trigger an immune response that inhibits the metastatic spread of the tumor to the liver, according to a study led by researchers at Weill Cornell Medicine, Memorial Sloan Kettering Cancer Center and Korea's Yonsei University.

4 Dec 2024

Study highlights the critical role of TLR7 in sex-biased Alzheimer’s-related demyelination

Inhibiting an immune signaling protein called TLR7 may help preserve the protective layer surrounding nerve fibers in the brain during both Alzheimer's disease and ordinary aging, suggests a study led by researchers at Weill Cornell Medicine.

2 Dec 2024

Normal breast tissue cells harbor cancer-like genetic abnormalities

A new study from researchers at The University of Texas MD Anderson Cancer Center finds that, in healthy women, some breast cells that otherwise appear normal may contain chromosome abnormalities typically associated with invasive breast cancer. The findings question conventional thinking on the genetic origins of breast cancer, which could influence early cancer detection methods.

20 Nov 2024

Study uncovers key mechanism behind HIV latency

An immune response that likely evolved to help fight infections appears to be the mechanism that drives human immunodeficiency virus (HIV) into a latent state, lurking in cells only to erupt anew, researchers at Duke Health report.

18 Nov 2024

Study links cannabis use to genotoxicity and transgenerational health impacts

Cannabis exposure leads to genetic damage and accelerated aging, raising concerns about its transgenerational health effects and public health implications.

18 Nov 2024

Leveraging genetic variations for more effective cancer therapies

By exploiting the genetic variation in cancer cells, an already approved cancer drug demonstrated enhanced effects against cancer cells in specific patient groups.

14 Nov 2024

New study links genetic mosaicism to lower Alzheimer’s risk in adults with Down syndrome

Study finds mosaicism in Down syndrome reduces Alzheimer's risk, providing new insights into genetic influences on cognitive decline and dementia progression.

8 Nov 2024

Research sheds light on how fecal transplants improve gut health

In a novel study that identified male chromosome genetic material in the intestines of female patients undergoing fecal transplants, researchers at Johns Hopkins Medicine say they have significantly expanded scientific understanding of how some of these transplants may succeed and work.

6 Nov 2024

Gene editing with CRISPR may introduce new defects

The CRISPR tool is capable of repairing the genetic defect responsible for the immune disease chronic granulomatous disease.

6 Nov 2024

Iron and vitamin D reduce depression risk, while selenium and magnesium raise it

Researchers explore the causality between micronutrient intake and depression using Mendelian randomization.

4 Nov 2024

Scientists develop first durable human lip cell models in the lab

We use our lips to talk, eat, drink, and breathe; they signal our emotions, health, and aesthetic beauty. It takes a complex structure to perform so many roles, so lip problems can be hard to repair effectively. Basic research is essential to improving these treatments, but until now, models using lip cells - which perform differently to other skin cells - have not been available.

4 Nov 2024