Necrotic tumor microenvironment (Necrotic TME)

The necrotic tumor microenvironment (TME) is a distinct region within solid tumors characterized by extensive cell death resulting from chronic hypoxia, nutrient depletion, and metabolic waste accumulation [1]. Unlike programmed cell death (apoptosis), necrosis involves the loss of cell membrane integrity, which releases intracellular components such as DNA and histones into the extracellular space, creating a unique biochemical signature [2]. This environment is typically found in the core of rapidly growing tumors where the rate of proliferation outpaces the development of functional blood vessels [3]. While the necrotic TME is often associated with aggressive disease, immunosuppression, and poor clinical outcomes, it serves as a specific target for necrosis-targeting therapies [4]. These therapies utilize antibodies or small molecules to bind to exposed intracellular antigens, enabling the localized delivery of radioisotopes, toxins, or immune-stimulating agents directly to the tumor's interior [5]. References: [1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4131253/; [2] https://pubmed.ncbi.nlm.nih.gov/25109395/; [3] https://www.nature.com/articles/s41416-021-01425-5; [4] https://www.sciencedirect.com/science/article/pii/S016836591730834X; [5] https://clinicaltrials.gov/ct2/show/NCT00003054.

Other names

Tumor necrotic coreNecrotic zoneTumor necrosisNecrotic tumor niche

Selective binding to intracellular antigens (e.g., DNA, histones) exposed only in necrotic cells to deliver therapeutic payloads such as radioisotopes or toxins.