Paracrine signaling mediators (Brain) (null)

The target 'paracrine effects on multiple endogenous brain cell types' refers to a multi-factorial mechanism of action primarily associated with regenerative cell therapies like SB623 (SanBio, 2024). Instead of binding to a single receptor, the therapeutic agent (often modified mesenchymal stem cells) acts as a 'bio-factory' within the brain, secreting a diverse array of trophic factors, cytokines, and extracellular vesicles. These secreted mediators interact with various endogenous cell types, including neurons, astrocytes, microglia, and endothelial cells, to create a pro-regenerative environment (Steinberg et al., 2016). This process facilitates neuroprotection, stimulates endogenous neurogenesis and angiogenesis, and modulates the local inflammatory response to promote functional recovery. This approach is particularly relevant for treating chronic neurological deficits resulting from stroke or traumatic brain injury, where complex tissue repair is required (Kawabori et al., 2021). Because the effect is mediated by a collective secretome rather than a single molecule, it is often classified as a paracrine-mediated therapeutic strategy in pharmacological databases (AdisInsight, 2024).

Other names

Paracrine factorsSecretomeTrophic factorsBystander effect mediators

Therapeutic cells (e.g., SB623) are transplanted into the brain where they secrete a variety of trophic factors and cytokines. These factors act in a paracrine manner on endogenous neurons, astrocytes, and microglia to promote tissue repair, reduce inflammation, and stimulate neurogenesis and angiogenesis.