Headshot of Holly Barker

Holly Barker

Holly Barker is a freelance writer based in London. She has a Ph.D. in clinical neuroscience from King’s College London and a degree in biochemistry from the University of Manchester. She has previously written for Discover and Spectrum News.

Articles by Holly Barker
illustration of cancer cells moving
Cancer Cells Gather Speed in Thicker Fluids
Holly Barker | Nov 22, 2022 | 4 min read
Viscous solutions accelerate the migration of tumor cells and may enable metastasis, according to a new study.
Cells with miRNA activity reporter glowing
MicroRNAs Can Boost Gene Expression: Study
Holly Barker | Nov 15, 2022 | 3 min read
The tiny strings of RNA promote translation of a protein implicated in cancer, a hint they could regulate gene expression in more ways than previously thought.
illustration of DNA strands
Mitochondrial DNA Sneaks into Nuclear Genome
Holly Barker | Oct 17, 2022 | 3 min read
Genetic material pilfered from mitochondria may seal cracks in our genetic code, a study suggests.
a false color transmission electron microscope image of a neuronal cell body, with lysosomes colored dark green
Scientists Uncover Major Pathway Cells Use to Mend Leaky Lysosomes
Holly Barker | Oct 6, 2022 | 3 min read
Damaged lysosomes are repaired by a lipid-based signaling pathway dubbed PITT that could be targeted to treat neurodegenerative disease, its discoverers say.
Histological slide showing cancerous prostate tissue
2D Genetic Map of Prostate Cells Charts Cancer Growth
Holly Barker | Aug 23, 2022 | 4 min read
An in situ map of copy number variations in prostate tissue reveals that purportedly cancerous genomic changes frequently occur in the healthy tissue surrounding tumors.
Artist&rsquo;s rendition of multiple <em>Neisseria gonorrhoeae</em>, the bacteria that causes gonorrhea, depicted as two spheres stuck together, each covered in tendrils.
Gonorrhea-Blocking Mutation Also Protects Against Alzheimer’s: Study
Holly Barker | Aug 5, 2022 | 4 min read
Research traces the evolution of a gene variant that reduces the risk of Alzheimer’s disease, finding that it originally evolved in response to infectious bacteria.