Using multiplex immunohistochemistry, the study dissected TIME features of gastric cancer from both immune‑cell density and spatial distribution dimensions and constructed a multi‑dimensional tumor‑infiltrating immune‑cell predictive model, aiming to address the clinical challenge of accurate efficacy prediction for gastric cancer immunotherapy.
This study adopted a progressive research framework: “mIF spatial panoramic screening + deep‑learning‑based quantitative modeling + single‑cell mechanistic validation”. Multiplex immunofluorescence was the core platform for data acquisition and signature mining. Specimens were enrolled from 553 surgically treated NSCLC patients at stage IA‑IIIB with strict inclusion and exclusion criteria. Post‑operative disease‑free survival (DFS) was selected as the primary clinical endpoint.
Unlike traditional immunohistochemistry, which is limited to detecting a single protein marker, multiplex fluorescent immunohistochemistry can simultaneously label multiple biomarkers on a single tissue section, fully preserving the native tissue structure, cell locations, and intercellular interactions, providing critical technical support for tumor microenvironment analysis, new therapeutic target discovery, and immunotherapy regimen optimization.
This study reconstructs the application logic of the technology, focusing on in-depth discussions around its detection results, data characteristics, subtype analysis, and mechanistic conclusions, clarifying its core value and application advantages in the study of RIF immune mechanisms.
Unlike traditional single-marker immunohistochemistry, which can only perform qualitative or semi-quantitative detection, the greatest advantage of mIF is its single-cell resolution and spatial location information. It can not only count the number and density of various types of cells but also accurately analyze the arrangement patterns and distance relationships between cells, providing multidimensional data support for tumor immunotherapy and prognosis evaluation.
The products cover four complete categories: basic routine staining, Polymer‑HRP high-sensitivity color development, DAB/AEC dual-marker co-staining, and acid-base compatible ultra-sensitive rapid staining. They fully cover mainstream experimental species such as mice and rabbits, and accommodate diverse scenarios including beginner basic experiments, high-precision trace protein research, high-throughput batch testing, and multi-target joint analysis. They provide research institutions, medical laboratories, and pathology testing organizations with one-stop, highly stable, and highly accurate overall IHC staining solutions.
In response to the numerous technical bottlenecks and practical challenges of the traditional paraffin IHC pretreatment process, through formulation iteration and process optimization, a critical technological innovation has been achieved in the field of IHC: the three independent procedures essential for paraffin section experiments—deparaffinization, graded ethanol hydration, and antigen retrieval—can be perfectly integrated and completed in a single step using specialized integrated reagents.
Immunohistochemistry (IHC) is a core technology in life science research and clinical pathological diagnosis. Based on the principle of specific antigen‑antibody binding, it enables the localization, qualitative, and semi-quantitative analysis of target proteins within tissue cells. IHC kits serve as standardized core tools that ensure the precise, stable, and efficient application of this technology. Compared with reagents prepared in the laboratory, commercial IHC kits undergo systematic formulation optimization, process validation, and stability testing, significantly reducing experimental error and batch-to-batch variation. They are indispensable basic consumables in tumor classification, disease mechanism research, and targeted drug screening.
Immunohistochemical double staining (dual immunohistochemistry, Double IHC) is an advanced pathological detection technique based on conventional single immunohistochemical staining. Its core principle is to specifically label and localize two different target antigens simultaneously on the same tissue section (paraffin section/frozen section). By using two contrasting chromogenic systems to distinguish the signals, it can visually display the expression locations, expression levels, and co-localization relationships of the two proteins. The main difference from the fluorescence method is that image merging is not required; the difference in the colors of the two proteins can be observed directly with the naked eye, and the results can be permanently preserved without worrying about signal degradation.
The multiplex fluorescent immunostaining system, based on sequential staining and antibody elution techniques, combined with automated digital image analysis, overcomes the technical bottlenecks of traditional multiplex immunohistochemistry. It enables high-precision, multi-target immune microenvironment analysis of archived paraffin-embedded tissues, providing novel technical support for studying the immune mechanisms of liver diseases such as hepatic inflammation, liver fibrosis, and hepatocellular carcinoma, while also offering a general experimental protocol for immune phenotypic analysis of multi-organ tissues.
