The Forkhead box (Fox) protein superfamily consists of diverse transcription factors unified by a conserved winged-helix DNA-binding structural domain, which enables specific recognition and binding to target gene promoter sequences within cell nuclei.

Glucagon is a key pancreatic peptide hormone that maintains blood glucose homeostasis by triggering hepatic glycogenolysis and gluconeogenesis via the glucagon signaling cascade. This pathway relies on GCGR-coupled Gs/Gq proteins to activate two core downstream branches: the cAMP-PKA axis and calcium-dependent ERK-CREB signaling. Together, these cascades upregulate rate-limiting enzymes such as PEPCK and G6Pase to boost endogenous glucose synthesis and suppress glycogen formation. Abnormal transduction of glucagon signals contributes to hyperglycemia, type 2 diabetes, glucagonoma and obesity-related glucose metabolic disorders. Clarifying the molecular mechanism of this pathway offers valuable theoretical basis for exploring therapeutic targets of glycometabolic diseases.

G protein-coupled receptors (GPCRs) are a large family of cell surface receptors that bind and interact with intracellular heterotrimeric GTP-binding proteins to transduce extracellular stimuli into intracellular signals.

Inflammasomes are core cytosolic multiprotein oligomeric complexes that serve as pivotal sensory and effector machineries of the mammalian innate immune system. They are predominantly assembled in myeloid cells including macrophages, dendritic cells, and microglia, and can also be induced in epithelial cells and neurons under stress conditions.

Blood glucose levels will naturally rise following food intake. In response to elevated blood sugar, the beta cells located in the pancreatic islets synthesize and secrete insulin to maintain blood glucose concentrations within a stable physiological range. As a critical protein hormone in the human body, insulin functions like a molecular key that unlocks peripheral tissue cells, facilitating the uptake and internalization of circulating glucose into intracellular compartments and effectively lowering blood glucose levels.

The Janus kinase‑signal transducer and activator of transcription (JAK/STAT) cascade refers to a continuous intracellular protein interaction network that transmits extracellular stimulation signals into cells to trigger downstream biological responses. This signal transduction module exists widely in mammalian somatic cells and participates in the regulation of diverse physiological activities.

In the chronic inflammatory microenvironment of tumors, lymphoid aggregates formed by the orderly assembly of innate and adaptive immune cells can occur within non-lymphoid tissues. Among these, mature structures possessing complete T and B cell zones and germinal centers are defined as tertiary lymphoid structures (TLSs). Numerous clinical studies have confirmed that the enrichment of TLSs in tumor tissues is closely associated with favorable prognosis in cancer patients and high response to immune checkpoint blockade (ICB) therapy, making them a highly promising novel therapeutic target in the field of cancer immunotherapy.

Tyrosine phosphorylation plays a key role in cellular signaling. In cancer studies, unregulated tyrosine kinase activity can drive malignancy and tumor formation by generating inappropriate proliferation and survival signals. Antibodies specific for phospho-tyrosine have been invaluable reagents in these studies.

Immunohistochemistry (IHC) is a classical biological detection technique that integrates immunology, histochemistry, and microscopic imaging. It is fundamentally based on the principle of specific antigen-antibody binding and, combined with chemical colorimetric reactions, enables in situ qualitative, localization, and semi-quantitative analysis of target proteins within tissue cells. It is one of the core technologies in life science research and clinical pathological diagnosis.

In the field of biomedical detection and cellular molecular experimental research, fluorescence labeling technology is a core method for enabling the visualization, qualitative, and quantitative analysis of biological samples. Fluorescein isothiocyanate (FITC), as a classical green fluorescent labeling dye, is widely used in various experimental scenarios such as immunofluorescence staining, flow cytometry, biomolecular tracing, and clinical pathological diagnosis, owing to its mature labeling techniques, good versatility, and relatively high cost-effectiveness. It is currently one of the most frequently used fluorescent probes in the field of biological research.