DE-cadherin-mediated cell adhesion is essential for maintaining somatic stem cells in the Drosophila ovary

Background: Laminin, a member of the Extracellular Matrix (ECM), is a glycoprotein that is used as a factor that affects cell adhesion, proliferation, survival, and differentiation. Of these, five globular domains (LG domains) of the alpha chain play an important role in influencing the cell by binding to the integrin. Objective: This study aimed to evaluate the ability of globular domains 1-3 of laminin alpha2 (rhLAMA2LG1-3) in maintaining the pluripotency of human Mesenchymal Stem Cells (hMSCs), which are widely used in regenerative medicine. Methods: hMSCs were grown in the medium supplemented with rhLAMA2LG1-3, then the effect of the protein on hMSCs were confirmed through cell adhesion assay, proliferation assay and RTPCR. Results: rhLAMA2LG1-3 expressed in Escherichia coli has a molecular weight of 70 kDa, at 1 µg/ml concentration of rhLAMA2LG1-3, the attachment and proliferation of hMSCs were approximately 3.18-fold and 1.67-fold, respectively, more efficient than those of untreated controls. In addition, the undifferentiated state and degree of stemness of hMSCs were measured, on the basis of CD90 and CD105 levels. In the rhLAMA2LG1-3-treated hMSCs, the expression levels of CD90 and CD105 increased by 2.83-fold and 1.62-fold, respectively, compared to those in untreated controls. Conclusion: rhLAMA2LG1-3 can be potentially used in stem cell therapy to improve the viability and maintain the undifferentiated state of hMSCs.

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Neuronal Generation from Somatic Stem Cells: Current Knowledge and Perspectives on the Treatment of Acquired and Degenerative Central Nervous System Disorders

Current Gene Therapy ◽

10.2174/1566523034578375 ◽

2003 ◽

Vol 3 (3) ◽

pp. 247-272 ◽

Cited By ~ 25

Author(s):

S. Corti ◽

F. Locatelli ◽

S. Strazzer ◽

M. Guglieri ◽

G. Comi

Keyword(s):

Stem Cells ◽

Central Nervous System ◽

Nervous System ◽

Current Knowledge ◽

Somatic Stem Cells ◽

Central Nervous System Disorders

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Identification of Novel FNIN2 and FNIN3 Fibronectin-Derived Peptides That Promote Cell Adhesion, Proliferation and Differentiation in Primary Cells and Stem Cells

International Journal of Molecular Sciences ◽

10.3390/ijms22063042 ◽

2021 ◽

Vol 22 (6) ◽

pp. 3042

Author(s):

Eun Ju Lee ◽

Khurshid Ahmad ◽

Shiva Pathak ◽

SunJu Lee ◽

Mohammad Hassan Baig ◽

...

Keyword(s):

Stem Cells ◽

Cell Culture ◽

Cell Adhesion ◽

3D Culture ◽

Human Mesenchymal Stem Cells ◽

Cell Types ◽

Primary Cells ◽

Cell Culture Techniques ◽

Culture Techniques ◽

Promote Cell Adhesion

In recent years, a major rise in the demand for biotherapeutic drugs has centered on enhancing the quality and efficacy of cell culture and developing new cell culture techniques. Here, we report fibronectin (FN) derived, novel peptides fibronectin-based intergrin binding peptide (FNIN)2 (18-mer) and FNIN3 (20-mer) which promote cell adhesion proliferation, and the differentiation of primary cells and stem cells. FNIN2 and 3 were designed based on the in silico interaction studies between FN and its receptors (integrin α5β1, αvβ3, and αIIbβ3). Analysis of the proliferation of seventeen-cell types showed that the effects of FNINs depend on their concentration and the existence of expressed integrins. Significant rhodamine-labeled FNIN2 fluorescence on the membranes of HeLa, HepG2, A498, and Du145 cells confirmed physical binding. Double coating with FNIN2 or 3 after polymerized dopamine (pDa) or polymerized tannic acid (pTA) precoating increased HBEpIC cell proliferation by 30–40 percent, suggesting FNINs potently affect primary cells. Furthermore, the proliferation of C2C12 myoblasts and human mesenchymal stem cells (MSCs) treated with FNINs was significantly increased in 2D/3D culture. FNINs also promoted MSC differentiation into osteoblasts. The results of this study offer a new approach to the production of core materials (e.g., cell culture medium components, scaffolds) for cell culture.

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