Human bone marrow-derived cells: an attractive source to populate dermal substitutes

Area of Science:

• Regenerative Medicine
• Tissue Engineering
• Dermatology

Background:

• Dermal fibroblasts are crucial for neodermis formation in skin substitutes.
• Alternative cell sources are needed for patients with extensive skin loss.

Purpose of the Study:

• To evaluate human bone marrow-derived cells (BMDCs) as a substitute for dermal fibroblasts in 3D in vitro reconstructed skin.
• To assess BMDCs' capacity to promote dermal fibroblast differentiation and function.

Main Methods:

• BMDCs were cultured in a 3D in vitro reconstructed tissue model.
• Cellular morphology, matrix contraction, and protein expression (collagens, fibrillin-1, MMPs, TIMP1) were analyzed.
• Comparison was made between BMDCs and human dermal fibroblasts.

Main Results:

• BMDCs contracted collagen matrices and exhibited similar morphology and nuclear form factor to dermal fibroblasts.
• Both cell types expressed desmin and vimentin, but not alpha-smooth muscle actin.
• BMDCs efficiently deposited collagen types I and III, and fibrillin-1, and regulated deposition via MMPs and TIMP1, similar to dermal fibroblasts.

Conclusions:

• BMDCs can be induced to perform functions analogous to dermal fibroblasts within a 3D skin construct.
• BMDCs hold promise as an alternative cell source for skin regeneration and wound healing applications.