Multiple immune and stromal cell populations via secreted factors and exosomes

The phrase 'Multiple immune and stromal cell populations via secreted factors and exosomes' refers to a complex biological system of intercellular communication rather than a single molecular target. This process involves the coordinated exchange of information between diverse cell types, including T cells, macrophages, fibroblasts, and endothelial cells, primarily within a tissue microenvironment such as a tumor or a site of injury [1]. Communication is mediated by soluble factors like cytokines and chemokines, as well as by exosomes—small extracellular vesicles that transport proteins, lipids, and nucleic acids to recipient cells [2]. In pathological states like cancer, this network is often subverted to promote immune evasion, angiogenesis, and therapeutic resistance by reprogramming the surrounding stroma [3]. While many modern therapies, such as mesenchymal stem cell (MSC) treatments or exosome-based biologics, aim to modulate this entire signaling environment, the description provided encompasses a broad physiological mechanism rather than a discrete, druggable receptor or enzyme. Consequently, it is classified as an incorrect target entry for a molecular database, as it represents a systemic interaction profile rather than a specific molecular entity. [1] Arneth, B. (2019). Medicina. [2] Kalluri, R., & LeBleu, V. S. (2020). Science. [3] Pitt, J. M., et al. (2016). Journal of Clinical Investigation.

Other names

Tumor microenvironment communicationIntercellular signaling networkParacrine and exosomal crosstalkStromal-immune cell interaction

Modulation of the tissue microenvironment through the systemic delivery or local secretion of cytokines, growth factors, and exosomal cargo to alter the functional state of multiple cell types simultaneously.