Systemic tissue microenvironment

The systemic tissue microenvironment represents the collective physiological and biochemical conditions present throughout an organism's tissues, encompassing the extracellular matrix, interstitial fluid, and circulating signaling molecules. It serves as the broader context in which local tissue microenvironments operate, facilitating inter-organ communication through hormones, cytokines, and extracellular vesicles (PMID: 30104665). This environment plays a pivotal role in maintaining homeostasis and orchestrating the body's response to injury or infection. In the context of oncology, the systemic microenvironment is increasingly recognized for its role in "macro-environmental" regulation of tumor growth and the formation of pre-metastatic niches (PMID: 27550820). While it is a critical factor in disease progression and therapeutic response, it is not a single molecular target but rather a complex system of interacting components. Consequently, pharmacological strategies typically focus on specific molecular constituents within this environment, such as TGF-beta or VEGF, rather than the systemic environment as a whole. Understanding the systemic microenvironment is essential for predicting drug efficacy and potential systemic side effects in complex pathologies.

Other names

Systemic microenvironmentTissue microenvironmentExtracellular milieuMacroenvironment

Not applicable as this is a physiological system rather than a single molecular target.