Hurdles to overcome for mesenchymal stem cell translation from bench to bedside

Table 3 Detailed comparison of the therapeutic potential of mesenchymal stem cells derived from various sources

Source	Preferential lineage-specific differentiation	Typical best-fit indications	Pros	Cons	Ref.
Bone marrow	Strong osteogenic and chondrogenic	Bone defects, osteoarthritis, non-union bones	Extensively studied; good for bone and cartilage repair	Lower yield; donor age effect; invasive harvest procedure	[68,118,127]
Adipose tissue	Cardiomyocytes, skeletal muscle cells, neurons, hepatocytes, and tenocytes	Wound healing, ischemic injury, soft tissue repair	High yield of cells from liposuction; abundant tissue source; proliferative; useful for soft tissue regeneration	Lower osteogenic and chondrogenic differentiation compared to bone marrow	[119,120,127,128]
Umbilical cord/Wharton’s jelly	Osteogenic, chondrogenic, adipogenic, vascular, neuronal	Immune modulation, systemic inflammatory disorders, arthritis, cardio- and cerebrovascular	Neonatal origin, high proliferation, immune-privileged, trophic activity, antifibrotic, good for allogeneic off-the-shelf use	Variable processing methods; donor bank logistics	[127,129]
Synovial fluid	Tissue-biased properties (e.g., chondrogenic, neurogenic)	Cartilage repair	Useful for lineage-specific repair	Lower availability; niche-specific handling	[127,130,131]
Dental pulp	Odontoblasts, osteoblasts, endothelial cells, and nerve cells	Neuronal, vascular and odontogenic disorders	Highly proliferative; can be derived from deciduous teeth as well	Tiny primary tissue that gives lower cell yield	[127,132-134]