Solving a longstanding problem in drug delivery

artist's impression of a lipid nanoparticle engineered to switch between a positive and negative charge.

Lipid nanoparticles are great delivery vehicles for mRNA treatments, but their positive charge triggers high levels of inflammation. Now researchers led by Professor Niren Murthy have engineered a new lipid nanoparticle that can switch its charge from positive to negative and may avoid triggering inflammation while still able to deliver mRNA and other nucleic acids.

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In Memoriam: Prof. David Rempel

head and shoulders photo of Rempel, laughing

It is with great sadness that we recognize the passing of Dr. David Rempel, MD, MPH, CPE. A versatile expert in occupational health and long-time member of the Bioengineering Graduate Program, he was a Professor Emeritus of Medicine at UCSF and Bioengineering Berkeley. He will be missed.

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Aris and Lowet receive Jane Coffin Childs Fellowships

head photos of Aris and Lowet

Congratulations to two postdoctoral scholars in BioE lab who have been named 2026 Jane Coffin Childs Fellows! The charitable fund supports brilliant postdoctoral fellows conducting fundamental research on cancer and human disease. Kevin Aris, PhD, works in Aaron Streets’ lab on tools to measure DNA supercoiling in living cells, to build a genome-wide map of DNA shape. Adam Lowet, PhD. works with Michael Yartsev to explore the computational and biological mechanisms underlying social decision-making in the Egyptian fruit bat.

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