Researchers from Emory University and Columbia University have uncovered a link between the gut microbiome and bone loss in patients with primary hyperparathyroidism (PHPT). The study demonstrates that specific gut bacteria, particularly Bifidobacterium longum, may influence bone density by stimulating immune cells that promote bone resorption. The findings suggest that gut microbiome composition could help predict osteoporosis risk in PHPT patients and may open new avenues for preventive interventions.

This study reveals the spatial heterogeneity and temporal dynamics of vegetation net primary production (NPP) across the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) outer ecological barrier, and clarifies the joint impacts of vegetation features, climate and human activities on regional ecological functions.

Tumor cells coexist with diverse immune, stromal, and neural cells in a complex microenvironment. Recent single-cell and spatial transcriptomics have uncovered specialized cell subsets that drive cancer progression, immune evasion, and treatment response. A new review synthesizes these advances, introduces the “virtual tumor” concept for AI-driven ecosystem modeling, and outlines a roadmap from fundamental tumor microenvironment (TME) biology to next-generation precision immunotherapies targeting specific cell populations and their coordinated networks.

Thermal diffusion—a fundamental physical process pervasive in applications ranging from electronics to industrial systems—is inherently irreversible under the second law of thermodynamics. As temperature gradients spontaneously smooth out over time, crucial information regarding the initial thermal state is permanently lost due to entropy increase. This fundamental information loss leads to a severe ill-posedness in inverse thermal problems, where infinitesimal errors in the final observation can cause enormous uncertainties in the reconstructed initial state.

Recently, the team led by Qiyi Zhao, Yusheng Jie, and Yutian Chong from the Third Affiliated Hospital of Sun Yat-sen University published their latest research titled “Transfer RNA-derived small RNA-Gly activates the ACPH/GRHL1 axis to facilitate liver cell regeneration in acute-on chronic liver failure” in SCIENCE CHINA Life Sciences. This study uncovered the critical role of transfer RNA-derived small RNAs (tsRNAs) in mediating liver regeneration. It reveals a novel molecular mechanism by which tsRNA-Gly promotes hepatocyte regeneration in acute-on-chronic liver failure (ACLF) by activating the ACPH/GRHL1 signaling axis, providing a potential new therapeutic target for liver failure.

A propensity score-matched cohort study compared kidney-sparing surgery with radical nephroureterectomy in patients with ureteral urothelial carcinoma. After matching, radical nephroureterectomy was associated with better overall and cancer-specific survival, especially in selected subgroups. The findings support refined risk stratification and careful patient selection

The practical deployment of lithium–sulfur batteries (LSBs) is fundamentally limited by the sluggish stepwise sulfur redox kinetics. However, current design philosophies remain heavily constrained by the conventional “adsorption-catalysis” strategy, often overlooking the crucial rate-limiting kinetic obstacle of the high Li⁺ desolvation energy barrier. This sluggish Li⁺ desolvation process imposes a severe kinetic penalty on polysulfide conversion, thereby depressing electrochemical stability. Herein, we propose a catalyst desolvation strategy utilizing a Ce single-atom catalyst to promote the Li⁺ desolvation process, thereby enhancing the redox conversion of polysulfides. Results indicate that the catalyst desolvation strategy increases the proportion of contact ion pairs and aggregates, reduces the Li⁺ desolvation energy barrier, and stabilizes the lithium anode/electrolyte interface. Consequently, the accelerated Li⁺ desolvation facilitates rapid sulfur redox kinetics, thereby realizing stable cycling in LSBs with a low decay rate of 0.036% per cycle over 1700 cycles at 1 C. This work confirms the significant impact of Li⁺ desolvation and provides a new solution for achieving efficient conversion of polysulfides in LSBs.