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.

Genetic fusion drives unexpectedly fast growth in chronic myeloid leukemia

A new study has unveiled when chronic myeloid leukemia, a type of cancer that affects the blood and bone marrow, arises in life and how fast it grows.

9 Apr 2025

New bacterial evolutionary map could lead to precision treatments for infections

The first-of-its-kind in-depth bacterial evolutionary map could pave the way for the development of precision treatments for certain antibiotic-resistant infections, such as urinary tract infections.

3 Apr 2025

Sweetener saccharin revives old antibiotics by breaking bacterial defences

Saccharin destabilizes bacterial membranes and interferes with DNA replication, causing lysis and impairing virulence traits. The sweetener also re-sensitizes multidrug-resistant pathogens to antibiotics and disrupts stubborn biofilms.

3 Apr 2025

Study explores how sex chromosomes and hormones influence immune responses

Women have a higher proportion of key immune cells between puberty and menopause, which may be linked to the sex hormone estrogen and explain why they are less susceptible to certain infectious diseases than men, according to a new study led by researchers at UCL.

27 Mar 2025

New chromatin tracing method unlocks DNA looping process in high resolution

Among the many marvels of life is the cell's ability to divide and thus enable organisms to grow and renew themselves.

24 Mar 2025

Study uncovers how transposons use telomeres for survival in bacteria

Transposons, or "jumping genes" – DNA segments that can move from one part of the genome to another – are key to bacterial evolution and the development of antibiotic resistance.

7 Mar 2025

Researchers discover why scleroderma affects women more than men

Two new studies led by researchers at Hospital for Special Surgery (HSS) have uncovered key biological mechanisms driving systemic sclerosis (SSc), or scleroderma – a rare and often devastating autoimmune disease that causes fibrosis (tissue hardening) and inflammation.

6 Mar 2025

Study reveals how silent X chromosome enhances female brain resilience

In a surprise, work in mice has found that the dormant X chromosome in females can reawaken late in life and turn on genes that keep the brain healthy.

6 Mar 2025

Lactylation in the heart reveals key insights into cardiac regeneration

This study is led by Dr. Xiaodong Luan (Institute of Clinical Medicine, Peking Union Medical College Hospital), Dr. Shuyang Zhang (Department of Rare Diseases, Peking Union Medical College Hospital) and Dr. He Huang (Shanghai Institute of Materia Medica, Chinese Academy of Sciences).

28 Feb 2025

Advancements in molecular diagnostics for hematopoietic and lymphocytic neoplasms

Hematopoietic and lymphocytic neoplasms (HLNs) are a diverse group of malignancies affecting blood and lymphatic systems, with outcomes varying from manageable conditions to fatal diseases.

27 Feb 2025

Discovery paves way for new hepatitis B treatment

In their effort to answer a decades-old biological question about how the hepatitis B virus (HBV) is able to establish infection of liver cells, research led by Memorial Sloan Kettering Cancer Center (MSK), Weill Cornell Medicine, and The Rockefeller University identified a vulnerability that opens the door to new treatments.

22 Feb 2025

Breakthrough discovery unveils potential treatment for hepatitis B

In their effort to answer a decades-old biological question about how the hepatitis B virus (HBV) is able to establish infection of liver cells, research led by Memorial Sloan Kettering Cancer Center (MSK), Weill Cornell Medicine and The Rockefeller University identified a vulnerability that opens the door to new treatments.

20 Feb 2025

Genetic mutation linked to schizophrenia in both humans and mice

A genetic mutation found in two human patients with schizophrenia also increased schizophrenia-related behaviors in mice with the same mutation, a rare finding of a direct genetic link to psychosis, report researchers at the University of Illinois Urbana-Champaign and colleagues in Massachusetts and Germany.

19 Feb 2025

Drinking more water may lower heart disease risk, but too much coffee and tea could raise it

Drinking water may help reduce cardiovascular disease (CVD) risk, while excessive coffee and tea intake (≥6 cups/day) increases the likelihood of CVD, with stronger effects in women.

19 Feb 2025

Gene editing shows promise for treating trisomy at cellular level

Gene editing techniques may eventually allow trisomy to be treated at the cellular level, according to an in vitro proof-of-concept study.

18 Feb 2025

ChromTR revolutionizes chromosome detection in metaphase cell images

ChromTR, a cutting-edge framework for chromosome detection in metaphase cell images, represents a significant advancement in the field of cytogenetics.

17 Feb 2025

Researchers identify genetic cause of Lennox-Gastaut syndrome

Researchers at Baylor College of Medicine, the Jan and Dan Duncan Neurological Research Institute (Duncan NRI) at Texas Children's Hospital, Baylor Genetics and collaborating institutions provided a long-awaited and rare genetic diagnosis in a child with Lennox-Gastaut syndrome, a type of developmental epileptic encephalopathy (DEE), associated with a severe, complex form of epilepsy and developmental delay.

14 Feb 2025

New biomarker can accurately predict outcomes in meningiomas and breast cancers

Using a new technology and computational method, researchers from Fred Hutch Cancer Center and The University of Texas MD Anderson Cancer Center have uncovered a biomarker capable of accurately predicting outcomes in meningioma brain tumors and breast cancers.

13 Feb 2025

Study reveals key mechanisms behind cancer cells adapting to extra chromosomes

Cancer cells have special adaptation mechanisms that allow them to proliferate despite changes in their genetic makeup.

13 Feb 2025

Testosterone treatment can save lives for men with Klinefelter syndrome

Testosterone treatment significantly reduces mortality among men with Klinefelter syndrome. Researcher calls for changes in guidelines to ensure more patients receive the necessary treatment.

13 Feb 2025