Necrotic tumor tissue

Necrotic tumor tissue represents a distinct pathological region within solid tumors characterized by cell death resulting from chronic hypoxia and nutrient deprivation (He et al., 2017, Scientific Reports). Unlike healthy or viable malignant cells, necrotic cells possess compromised plasma membranes, which expose intracellular components such as DNA and histones that are otherwise sequestered (Chen et al., 1989, Journal of Nuclear Medicine). These exposed molecules serve as stable, abundant "anchors" for necrosis-targeting agents (NTAs), allowing for the selective accumulation of diagnostic or therapeutic payloads within the tumor core (NCI Drug Dictionary, 2023). This targeting strategy is particularly advantageous for treating large, poorly vascularized tumors that are often resistant to conventional chemotherapy and radiation. Furthermore, the unique anaerobic and immunosuppressive microenvironment of necrotic tissue can be exploited by certain therapeutic bacteria, such as Clostridium novyi-NT, for selective colonization and localized tumor destruction (Staedtke et al., 2016, Science Translational Medicine). By focusing on the non-viable portion of the tumor, these therapies aim to create a "bystander effect" that eliminates adjacent viable cancer cells through the release of cytokines or radioactive decay.

Other names

Tumor necrosisNecrotic coreNon-viable tumor tissueNecrotic tumor debris

Binding to exposed intracellular antigens such as DNA and histones that become accessible only after cell membrane rupture, or selective colonization of the anaerobic, nutrient-poor microenvironment by specific therapeutic agents (Chen et al., 1989; Staedtke et al., 2016).