--- title: 'Research Daily Summary: What Happened on October 13, 2026' headline: Targeted nanoparticles engineer CAR natural killer cells in mice description: Studies used routine cancer records to track cachexia and spatial transcriptomics to map cell recruitment in tumors and mouse heart tissue. url: https://thebench.bio/news/research/2026-10-13 topic: research date: '2026-10-13' covers: - '2026-10-13' date_published: '2026-10-13T12:02:59Z' date_modified: '2026-10-13T12:02:59Z' tags: - Industry - Software sources: 4 publisher: TheBench.Bio --- # Research Daily Summary: What Happened on October 13, 2026 **Targeted nanoparticles engineer CAR natural killer cells in mice** Studies used routine cancer records to track cachexia and spatial transcriptomics to map cell recruitment in tumors and mouse heart tissue. ## Today in brief Targeted lipid nanoparticles delivered mRNA to natural killer cells in mice, generating CAR-expressing cells that acted in several disease models. [1] An analysis of 52,236 cancer patients linked cachectic weight-loss episodes to disease progression and poorer survival. [2] [3] A separate team used spatial transcriptomics to map cell recruitment across tumors and mouse heart tissue. [4] ## Nanoparticles engineer CAR natural killer cells in mice Lead nanoparticles transfected up to about 80% of natural killer cells in mice, with few off-target effects. [1] The resulting CAR cells eliminated targeted cells in blood and autoimmune disease models, and produced tumor regression in two humanized blood-cancer models. [1] ## Routine records track cancer cachexia Researchers analyzed records from 52,236 cancer patients and found that cachectic weight-loss episodes tended to occur near disease progression and were associated with worse survival. [2] [3] A study published October 12 described the same cohort, identified 30,938 episodes and evaluated its models in an independent cohort. [3] ## SPACER maps cell recruitment SPACER, an interpretable AI framework, was tested on 37 spatial transcriptomics datasets. [4] Across several tasks, it recovered biologically meaningful cell-recruitment signals 4–21 times better than existing methods. [4] Across the cancers studied, local antigen presentation was the strongest correlate of T-cell engagement. [4] ## The day in numbers - **~80%**: Maximum share of natural killer cells transfected by the lead nanoparticles in mice. [1] - **52,236**: Cancer patients in the cachexia analysis. [2] [3] - **37**: Spatial transcriptomics datasets analyzed with SPACER. [4] ## Also published - [The Biggest Remaining Barriers to High-Quality RWE Across Oncology Data Platforms](), Applied Clinical Trials - [The winner | BioTechniques Image Competition 2026](), BioTechniques - [Yes, vaccines protect against infection, but they do so much more…](), BioTechniques - [How to choose lab consumables: A guide to sterility, performance, and sustainability](), Labiotech ## Sources 1. [In vivo engineering of CAR natural killer cells for immunotherapy using ligand-directed lipid nanoparticles](), Nature Biotechnology, 2026-10-13 2. [Characterizing the onset and progression of cancer cachexia using routine clinical data](), Nature Medicine, 2026-10-13 3. [A health-system-scale, episode-resolved multimodal atlas of cancer cachexia](), Nature Medicine, 2026-10-12 4. [Interpretable AI model reveals spatial codes of cell recruitment in tissues](), Nature Biomedical Engineering, 2026-10-13 --- TheBench.Bio wrote this from the reporting cited above, with a language model drafting and editing. [1]: [2]: [3]: [4]: