Comment on 'CCN1 Secreted by Human Adipose-Derived Stem Cells Enhances Wound Healing and Promotes Angiogenesis Through Activating the AKT Signaling Pathway'

The document comments on a study by Yi et al. that suggests CCN1 secreted by human adipose-derived stem cells (hADSCs) enhances wound healing and promotes angiogenesis via the AKT signaling pathway. While acknowledging the potential of CCN1 in wound healing, the authors highlight limitations such as the small sample size of five mice per group, which may affect the study's reliability. They suggest that a larger sample size, like in a study with sixteen mice per group, could provide more credible results. Additionally, they question the absorption of CCN1 when injected directly into wound sites and emphasize the complexity of wound healing, which involves more than just re-epithelialization and angiogenesis, but also collagen deposition and regeneration of structures like hair follicles. The authors call for more comprehensive assessments of wound healing in future research.