Novel switch protein that 'turns on' sperm for fertilization

For a sperm to fertilize an egg, the sperm must first mature in a man's epididymis. Now, an international team of researchers has identified a chain of events in which a protein secreted by the testis travels in the luminal ...

Highly efficient CRISPR knock-in in mouse

Genome editing using CRISPR/Cas system has enabled direct modification of the mouse genome in fertilized mouse eggs, leading to rapid, convenient, and efficient one-step production of knockout mice without embryonic stem ...

Faster, more efficient CRISPR editing in mice

University of California, Berkeley scientists have developed a quicker and more efficient method to alter the genes of mice with CRISPR-Cas9, simplifying a procedure growing in popularity because of the ease of using the ...

Fast track to mouse modeling

What genes are responsible for the development of breast cancer? What are the brain cell mutations that lead to the onset of Alzheimer's? To find new therapies, scientists have to understand how diseases are triggered at ...

Worm genes KO'd

Knocking genes out of action allows researchers to learn what genes do by seeing what goes wrong without them. University of Utah biologists pioneered the field. Mario Capecchi won a Nobel Prize for developing knockout mice. ...

Muscle gene may provide new treatments for obesity and diabetes

(PhysOrg.com) -- Skeletal muscle enables us to walk, run or play a musical instrument, but it also plays a crucial role in controlling disease. Rockefeller University scientists have now shown how a specific molecule in skeletal ...

Molecule regulating sperm motility discovered

About 120 million unintended pregnancies occurred each year between 2015 and 2019 worldwide. While there are oral contraceptives for women, the development of oral contraceptives for men has not been successful. Now, a team ...

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