Endogenous cell recruitment and differentiation

Endogenous cell recruitment and differentiation refers to strategies in regenerative medicine aimed at mobilizing the body’s own stem and progenitor cells to sites of injury or disease, where they can proliferate and differentiate to repair or replace damaged tissue. This process, also known as stem cell homing, leverages natural or engineered gradients of chemoattractants (e.g., SDF-1), growth factors, and extracellular matrix cues to guide cell migration. Biomaterial scaffolds, often functionalized with adhesive peptides, growth factors, or decellularized ECM, are used to create a permissive microenvironment that promotes cell adhesion, proliferation, and lineage-specific differentiation. While promising for avoiding cell transplantation and associated regulatory hurdles, this approach may be limited in tissues with reduced endogenous stem cell reservoirs. The success of these strategies depends on the complex interplay of biochemical, biophysical, and immune cues within the injury microenvironment.

Other names

Stem cell homingprogenitor cell recruitmentcell-free tissue regenerationin situ tissue regenerationendogenous stem cell therapy

Sustained release of chemokines (e.g., SDF-1) and growth factors (e.g., VEGF, HGF) from scaffolds to attract stem cells; Incorporation of cell-adhesive peptides (e.g., RGD, YIGSR) or ECM components into biomaterials to promote cell adhesion and migration; Use of decellularized extracellular matrix scaffolds that mimic native tissue and release matricryptic peptides to recruit progenitor cells; Delivery of transcription factors or miRNAs to direct stem cell differentiation at the injury site; Modulation of biophysical cues (stiffness, topography) to influence cell fate