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New blood test detects one of the deadliest cancers before scans can

A new blood test could detect cancer recurrence before scans are capable of picking it up.

New liquid biopsies may reliably detect the recurrence of lung cancer even in its earliest stages, and long before a tumor is large enough to appear on a scan.

That’s according to a study from NYU Langone Health and Grossman School of Medicine, where researchers detailed real-time genetic monitoring which accurately predicted the risk of lung cancer relapse.

Chornobyl dog population shows genetic signatures of directional selection

The latest research on the wild population of dogs in Chornobyl reveals that the genetic differences between these dogs and other similarly isolated dog populations are likely evidence of directional selection, not mutation. The work suggests a potential association between genetic selection and environmental variables and could advance understanding of local adaptation and genomic resilience in contaminated environments. The study appears in Genes.

Previously, researchers had looked at genetic differences in two populations of dogs: one located at the Chornobyl Nuclear Power Plant (NPP) and the other in Chornobyl City, approximately 10 miles (16 kilometers) away. They found that the genetics of Chornobyl City dogs were very similar to dog populations in Russia, Poland and the surrounding areas, whereas those from the NPP had some distinct differences—specifically in regions associated with DNA repair.

“This work ties up some of the loose ends from our previous work, where in characterizing the population’s genetic structure we found that while these two dog groups are geographically very close, they have a very high degree of genetic difference, and those differences aren’t due to mutation,” said Megan Dillon, a postdoctoral research scholar at North Carolina State University’s College of Veterinary Medicine.

Gemini 4 Carbon: our next frontier model

🚀 Google Just Dropped Gemini 4 Carbon.

Just two weeks after launching Gemini 4 Argon, Google is already pushing the frontier further with Gemini 4 Carbon—their strongest model yet, featuring state-of-the-art capabilities built for long-horizon tasks, complex engineering, and heavy-duty problem solving.

Key Highlights:

* 1 on Artificial Analysis: It currently ranks #1 on the updated v5.0 Artificial Analysis Intelligence Index.

* Cybersecurity Powerhouse: Rolling out first to cyber defenders and trusted partners. It dominates vulnerability detection, exploitation validation, and root-cause patching (hitting top marks on SEC-bench Pro, ExploitGym, and CWE-bench).

* Long-Horizon & Persistence: Built for sustained agentic workflows—capable of running for days to tackle multi-step engineering tasks, track down bugs, and handle complex codebases.

* Massive Coding & Science Leap: Major improvements in full-stack web development (jumping to #4 on WebDev Arena) and a massive boost for scientific domains.

Continue reading “Gemini 4 Carbon: our next frontier model” | >

A PTN+ glioblastoma subclone orchestrates immune reprogramming to drive distant recurrence

Distant recurrence (DR) represents a distinct and lethal trajectory in glioblastoma (GBM), characterized by the colonization of spatially isolated neural niches. The mechanisms by which disseminated tumor cells remodel the microenvironment to overcome anatomical and immunological barriers remain poorly understood. This study aimed to decode the immune ecosystem of DR and elucidate the intercellular crosstalk driving this lethal dissemination.

We performed single-cell RNA sequencing (scRNA-seq) on paired primary and DR tumor specimens from GBM patients, alongside an independent local recurrence (LR) control cohort, to map dynamic cellular shifts. Bioinformatic analyses, including differential abundance testing (Milo), cell-cell communication inference (CellChat), and copy number variation (CNV) analysis, were integrated with clinical co-immunoprecipitation (Co-IP) validation, bidirectional in vitro co-culture assays, and an orthotopic xenograft mouse model.

Our high-resolution atlas revealed a profound remodeling of the microenvironment in DR lesions, characterized by a specific expansion of anti-inflammatory monocyte-derived tumor-associated macrophages (Anti_infl-TAM) and a paradoxical co-enrichment of CD8 + T cells and Tregs. Mechanistically, an OPC-like subpopulation of PTN+ tumor cells acted as a “paracrine architect,” promoting Anti_infl-TAM polarization through the interaction between PTN and NCL. Co-IP assays confirmed direct physical binding of these two proteins in human DR tissues. Functional and bidirectional knockdown assays demonstrated that decoupling this cellular communication, achieved by targeting either PTN in tumor cells or NCL in macrophages, significantly attenuated glioma cell proliferation, migration, invasion, and macrophage polarization. In vivo, silencing PTN markedly reduced Anti_infl-TAM infiltration, suppressed intracranial tumor burden, and prolonged overall survival in tumor-bearing mice.