The acquisition of totipotency is a fundamental process in early mammalian development, characterized by zygotic genome activation (ZGA) and the transient expression of 2-cell-stage (2C) specific genes and retrotransposons, such as MERVL. While the Double Homeobox (DUX) family proteins (mouse Dux and human DUX4) are recognized as master transcription factors for this transition, the underlying biophysical mechanisms by which they orchestrate global chromatin remodeling and coordinate distal gene activation have remained elusive.

Temporomandibular joint (TMJ) osteoarthritis affects millions of people, yet the earliest molecular events behind the disease remain poorly understood. Researchers have now mapped how mechanical stress and disk displacement trigger cellular changes in the jaw joint’s synovium using advanced transcriptomic technologies. Their findings reveal inflammatory and fibrotic responses that may drive disease onset. The work provides a high-resolution cellular atlas of TMJ tissues, offering insights that could guide future therapies aimed at preventing joint degeneration.

Impaired wound healing and pathological scarring remain major clinical challenges, closely linked to dysregulation of the immune microenvironment.

Impaired wound healing and pathological scarring remain major clinical challenges, closely linked to dysregulation of the immune microenvironment. Aberrant macrophage polarization, persistent neutrophil activation, and dysfunctional T cell regulation have been demonstrated to critically shape wound resolution and fibrotic outcomes. However, conventional in-vitro models fail to recapitulate human-relevant immune responses, thereby limiting mechanistic insights into wound healing pathology and hindering therapeutic translation.

Human tumor organoids have advanced cancer modeling by preserving patient-specific heterogeneity and functional drug responses. However, translating organoid findings into routine decision-making remains challenging due to variability in culture conditions and incomplete reconstruction of the tumor microenvironment. In this review, we present a clear and actionable framework that positions tumor organoids as dynamic living biosensors, linking mechanistic studies, tumor microenvironment reconstruction, functional drug-response phenotyping, and precision-therapy decision-making.

This study introduces TEAM (Targeted Elimination and Microcell-Mediated Transfer), a novel programmable platform that enables precise chromosome replacement in mammalian cells. By combining CRISPR/Cas9-mediated chromosome elimination with microcell-mediated chromosome transfer (MMCT), researchers successfully demonstrated intra-species chromosome stability while uncovering fundamental barriers to cross-species chromosome engineering.

Eastern Africa’s Turkana Rift is both a hotbed for fossil discoveries of our earliest ancestors and a literal hotbed of volcanic activity caused by shifting tectonic plates. Now researchers have found that Earth’s underlying crust in the region has been significantly thinned, presaging Africa’s eventual breakup—and with that finding, the researchers offer a new perspective on how Turkana’s world-famous fossil record of human evolution came to be.

Community help is no longer just nice to have in the world of bat conservation, it is essential to large-scale bat monitoring and the protection of threatened and understudied species, according to new research.