A new study from researchers at the Hebrew University of Jerusalem reveals that pancreatic cancer may begin shaping its environment years before clinical detection. The team found that early precancerous cells form distinct spatial “niches” and interact directly with immune cells, potentially creating an immunosuppressive setting from the outset. This helps explain how pancreatic ductal adenocarcinoma, one of the deadliest cancers due to late diagnosis, can develop undetected over a decade or more.
Mapping the Roots of Evasion
The study, led Dr. Oren Parnas and carried out by the student Sebastian Arcila-Barrera with the help of Dr. Sharona Tornovsky-Babeay in the Faculty of Medicine at the Hebrew University of Jerusalem, combined single-cell RNA sequencing with spatial transcriptomics to examine pancreatic tissue samples. By preserving the spatial context of thousands of individual cells, the researchers were able to map how different types of acinar metaplastic cells organize within premalignant lesions and how they interact with surrounding immune cells.
Predicting Risk Through Cellular Organization
“Our findings show that these early altered cells are not randomly distributed,” said Dr. Parnas. “Instead, cells with similar identities tend to cluster together, forming semi-homogeneous niches that appear to actively interact with specific immune cell populations.”
The study revealed that certain metaplastic cell states are consistently found in close proximity to immune cells associated with immune suppression, including specific subsets of neutrophils and macrophages. These interactions were linked to gene expression patterns known to dampen immune activity, suggesting that immune evasion may begin well before cancer becomes invasive.
Sebastian Arcila-Barrera noted that the organization of these cells provides important clues about disease progression. “The spatial patterns we observed suggest that cell identity is established early, followed by localized expansion,” he explained. “This helps clarify how premalignant lesions develop and evolve over time.” Dr. Sharona Tornovsky-Babeay emphasized the translational importance of the findings. “Understanding the process of lesion formation and development, we may be able to better identify high-risk lesions and, in the future, design strategies that intervene before cancer fully develops,” she said.
Importantly, the researchers observed similar cellular organizations and immune interactions in human pancreatic tissue, strengthening the relevance of the findings beyond animal models. Together, the results offer a more detailed picture of the earliest events in pancreatic cancer initiation and highlight how spatial organization and immune interactions may shape disease outcomes long before symptoms appear.
The research paper titled “Acinar Metaplastic Cells Generate Semi-homogeneous Niches and Interact with Immune Cells” is now available in Gastroenterology and can be accessed here.
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