Dehydrated human amnion/chorion membrane regulates stem cell activity in vitro

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Wound Healing Research

Background:

• Human placental tissues, including dehydrated human amnion/chorion membrane allografts (dHACM), are recognized for chronic wound healing efficacy.
• These tissues have demonstrated in vitro and in vivo capabilities to recruit stem cells to wound sites.

Purpose of the Study:

• To investigate the in vitro effects of dHACM soluble extracts on human bone marrow mesenchymal stem cells (BM-MSCs), adipose-derived stem cells (ADSCs), and hematopoietic stem cells (HSCs).
• To evaluate the impact of dHACM on stem cell proliferation, migration, and cytokine secretion.

Main Methods:

• Stem cells (BM-MSCs, ADSCs, HSCs) were treated with soluble extracts from dHACM.
• Cell proliferation was assessed via DNA assay after 24 hours.
• Cell migration was evaluated by the closure of an acellular zone over 3 days.
• Cytokine secretion was analyzed using a multiplex ELISA array after 3 days.

Main Results:

• dHACM extracts significantly increased the proliferation of BM-MSCs, ADSCs, and HSCs within 24 hours.
• dHACM treatment accelerated the migration and closure of the acellular zone in ADSCs and BM-MSCs compared to controls.
• Stem cells treated with dHACM modulated the secretion of various soluble factors, including inflammatory regulators, mitogens, and wound healing signals.

Conclusions:

• dHACM promotes stem cell proliferation and migration in vitro.
• dHACM influences the secretome of stem cells, impacting inflammatory and regenerative pathways.
• dHACM may enhance wound healing by amplifying endogenous stem cell populations and modulating their function at the wound site.