Gene expression analysis of laminin-1-induced neurite outgrowth in human mesenchymal stem cells derived from bone marrow.

The mechanisms underlying the differentiation of Mesenchymal stem cells (MSCs) toward neuronal cell type are not clearly understood. Earlier, we reported that laminin-1 induces neurite outgrowth in human MSCs via c-Jun/AP-1 activation through ERK, JNK, and Akt pathways. In this study, we demonstrate that laminin-1 increases the expression of proneural gene, neuroD1 and induces the expression of immediate-early biomarkers of neuronal cell-programming-Egr1, Egr3, PC3, and PC4.

Dorfman-chanarin syndrome: a case report.

An 8-year-old male child, diagnosed case of congenital ichthyosis presented with abdominal distension, hepatomegaly and pancytopenia. His peripheral blood and bone marrow showed clear punched out intracytoplasmic vacuolations in leucocytes (Jordans' anomaly). He had convergent strabismus, ectropion, blepharitis and genu valgum.

c-Jun/AP-1 transcription factor regulates laminin-1-induced neurite outgrowth in human bone marrow mesenchymal stem cells: role of multiple signaling pathways.

In this study, we demonstrated that laminin-1 (LM-1) induces neurite outgrowth and enhances the expression of neurofilament-L and MAP2 in human bone marrow mesenchymal stem cells (MSCs). The c-Jun transcription factor was strongly activated by LM-1 during neurite induction. Suppression of c-Jun inhibited the expression of the c-Jun target genes α6 integrin and neurofilament-L, resulting in the loss of neurite outgrowth.

Laminin-1 induces neurite outgrowth in human mesenchymal stem cells in serum/differentiation factors-free conditions through activation of FAK-MEK/ERK signaling pathways.

Mesenchymal stem cells (MSCs) can be differentiated into cell types derived from all three germ layers by manipulating culture conditions in vitro. A multitude of growth and differentiation factors have been employed for driving MSCs towards a neuronal phenotype. In the present study, we investigated the potential of extracellular matrix (ECM) proteins-fibronectin, collagen-1, collagen-IV, laminin-1, and laminin-10/11, to induce a neuronal phenotype in bone marrow derived human MSCs in the absence of growth factors/differentiating agents.