Mammary Gland News and Research

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Cellular glue protein found to help clear away dead cells

A protein which sticks cells and tissues together has been found to have a surprising second job: helping cells which are packed into a continuous sealed layer, also known as epithelial cells, engulf nearby dead cells.

27 Aug 2026

Breast milk fats may reflect more than the fats a mother eats

A cross-sectional study of 109 breastfeeding women in the Netherlands found that maternal intakes of omega-3 and omega-6 PUFAs and trans fats were associated with corresponding fatty acid proportions in human milk. The researchers also identified links involving dietary fiber, diet quality and several micronutrients, although whether these relationships reflect direct biological effects or broader dietary patterns remains uncertain.

26 Aug 2026

Too little or too much iodine may push immunity off balance

This narrative review finds that adequate iodine supports thyroid hormone signaling, leukocyte metabolism, antioxidant defenses, and antimicrobial activity in humans and domesticated mammals. Both deficiency and sustained excess may impair immunity or promote thyroid inflammation, but precise immune-specific intake thresholds remain uncertain.

27 Jul 2026

New study links specific microRNAs to cancer-associated cachexia

Cachexia-a syndrome characterized by progressive muscle wasting-affects both humans and dogs with chronic diseases such as cancer.

22 Jul 2026

Toronto researchers uncover genetic drivers of triple negative breast cancer

Researchers have solved a long-standing mystery of how abnormal chromosomes drive cancer, identifying 81 new genes involved in aggressive breast cancer.

8 Jul 2026

Scientists find mechanism behind bird flu infections in dairy cattle

When H5N1 bird flu first began infecting U.S. cattle in early 2024, diagnosis was elusive, because in cows, the disease looked completely different.

19 Jun 2026

Just ten viral particles can infect cows with bird flu

Just 10 viral particles of the H5N1 bird flu that caused hundreds of influenza outbreaks in U.S. dairy cattle can cause infection in cows, a new study shows.

15 Jun 2026

How a tiny H5N1 dose triggers massive virus shedding in cow milk

Experimental infection studies in lactating Holstein cows showed that H5N1 B3.13 can infect the bovine mammary gland at doses as low as 10 TCID50, producing extremely high viral loads in milk. However, the virus did not transmit to sentinel cows through repeated exposure to contaminated milking equipment or through close contact under high-biocontainment conditions, suggesting that real-world dairy-farm spread depends on additional cofactors.

25 May 2026

Infectious H5N1 virus detected in dairy farm air

Findings from California dairy farms show H5N1 in air and wastewater, indicating overlooked transmission routes and implications for outbreak management.

8 May 2026

The power of organoids in speeding up lifesaving drug development

Organoids are miniature tissue or organ models formed by stem cells (including pluripotent stem cells, tissue-specific adult stem cells, etc.) or progenitor cells in an in vitro three-dimensional culture system, which possess structural features and partial functions analogous to their corresponding in vivo organs. In 2009, the Hans Clevers laboratory developed the first intestinal organoid, marking the inception of organoid-based disease modeling.

8 May 2026

Immune cells shape maternal and infant health during lactation

It's widely known that breastfeeding impacts the health of both mother and child, but the underlying biology that leads to these effects has been understudied.

26 Feb 2026

Early pregnancy reshapes breast aging and lowers cancer risk

A new study by cell biologists at the University of California, Santa Cruz, suggests that an early first pregnancy may protect against breast cancer decades later by preventing age-related changes in breast cells that are linked to tumor formation.

3 Feb 2026

Teen girls who play organized sports show lower breast cancer risk biomarkers

This cross-sectional study of 191 adolescent girls found that ≥2 hours of organized recreational physical activity in the past week was associated with lower breast percent water content and reduced oxidative stress. These biomarkers are linked to breast cancer risk, although causality and long-term outcomes cannot be inferred.

19 Jan 2026

Breast milk shares beneficial bacteria with babies

Researchers examine the relationship between the maternal milk microbiome and infant gut microbiome.

14 Jan 2026

Mammary glands of domesticated livestock and humans could harbor avian influenza

An ongoing outbreak of highly pathogenic avian influenza has affected more than 184 million domestic poultry since 2022 and, since making the leap to dairy cattle in spring 2024, more than 1,000 milking cow herds.

9 Dec 2025

New algae gel provides realistic platform for breast cancer research

In 2020, right when Jane Baude was starting her Ph.D. research at UC Santa Barbara, she learned that a critical component of her experiment - the gel needed to grow and test mammary epithelial cells - wouldn't be available for nearly a year because of pandemic-related production issues. So, she and her adviser, professor Ryan Stowers, decided to pivot: Baude would engineer her own gel to study cells.

3 Oct 2025

New software MaGNet automates analysis of breast tissue branching architecture

Branching isn't just for trees. This biological process occurs in animal development, enabling organs to perform complex functions. Branch-like structures form in lungs, kidneys, and breasts, among other places. Importantly, only in female mammary glands does most branching occur years after birth.

3 Oct 2025