What makes a transcription factor (TF) binding site “strong”: slow TF dissociation, or fast TF association? Kandavalli et al found that stronger sites had both slower dissociation and faster association compared to weaker sites in vivo.

Here the authors study how interactions with nuclear speckles help localize mRNA in cells. They find that modifications of the proteins in these structures affects their cohesion and can modulate mRNA retention under stress.

A single-cell study integrating data from lung tissues from patients with fatal COVID-19 from Malawi, the United States and Europe identifies shared and distinct immune and inflammatory mechanisms of response.

The molecular mechanisms underlying drug resistance in relapsed or refractory (rr) acute myeloid leukemia (AML) remain to be explored. Here, the use of bulk and single cell multi-omics and ex vivo drug profiling for 21 rrAML patients reveals mechanisms of resistance to the Bcl-2 inhibitor venetoclax and treatment vulnerabilities.

Phenotypic screens in organoids and primary cells are scaled up using perturbation pooling.

Two major advances in optical pooled screening improve substantially on sensitivity and robustness, expanding its applicability to a broader range of biological contexts.

With biomedical sciences quickly outgrowing many other application areas in terms of data generation, there is a unique opportunity for life sciences to become one of the greatest beneficiaries of research in machine learning and AI, and also inspire foundational developments in it.

In this Tools of the Trade article, Yury Goltsev and Garry Nolan describe a multiplexed tissue imaging technique called CODEX that enables rapid tissue staining with multiple DNA-barcoded antibodies.

Tumour growth involves anomalies in cell cycle genes and emergent phenotypes, but the tumour proliferation rate (or mitotic index) is defined by just one marker, Ki-67. A study now integrates expression patterns of several markers to generate spatio-temporal maps of cell proliferation in cancer tissues.