scholarly journals Transforming Growth Factor-Beta1 and Human Gingival Fibroblast-to-Myofibroblast Differentiation: Molecular and Morphological Modifications

2021 ◽  
Vol 12 ◽  
Author(s):  
Guya D. Marconi ◽  
Luigia Fonticoli ◽  
Thangavelu Soundara Rajan ◽  
Paola Lanuti ◽  
Ylenia Della Rocca ◽  
...  

After oral mucosal injury, the healing response following specific steps that lead to wound closure and to tissue repair. Multiple cell populations are involved in this process; in particular, fibroblasts play a key role in the production of extracellular matrix (ECM). During wound healing the remodeling of ECM is a key stage to restore the tissue functionality through multifunctional fibroblast populations that are placed in the connective tissues of gingiva and periodontal ligament. Notably, a fibroblast sub-type (myofibroblast) is centrally involved in collagen synthesis and fibrillar remodeling. The present work evidenced the role of Transforming Growth Factor-beta1 (TGF-β1) to mediate human gingival fibroblasts (hGFs) differentiation into myofibroblasts derived from gingival fibroblasts (myo-hGFs). The morphological and functional features were analyzed through Confocal Laser Scanning Microscopy (CLSM), flow cytometry, and western blotting analyses. The specific markers, such as alpha-Smooth Muscle Actin (α-SMA), Vimentin, E-cadherin, β-catenin, and Smad 2/3, were modulated in myo-hGFs after the induction with TGF-β1, at different time points (24, 48, and 72 h). After 72 h of treatment TGF-β1 operates as an inducer of hGFs into myo-hGFs differentiation. We propose that TGF-β1 may promote in vitro the fibroblasts-to-myofibroblasts transition via the morphological and molecular modifications, as the induction of α-SMA, Vimentin, E-cadherin, β-catenin, and Smad 2/3.

PLoS ONE ◽  
2012 ◽  
Vol 7 (6) ◽  
pp. e39736 ◽  
Author(s):  
Amir Soltani ◽  
Sukhwinder Singh Sohal ◽  
David Reid ◽  
Steve Weston ◽  
Richard Wood-Baker ◽  
...  

2021 ◽  
Author(s):  
Masoumeh Faramarzi ◽  
Leila Roshangar ◽  
Adileh Shirmohammadi ◽  
Mehrnoosh Sadighi ◽  
Azadeh Madanipour ◽  
...  

Abstract Objective Attachment of peri- implant mucosa to implant is crucial for long term survival of implant. Soft tissue healing around implants has been of great interest due to its important role in long-term maintenance of implant therapy. Considering the critical role of gingival fibroblasts in periodontal repair, the aim of this study was to evaluate the Concentrated Growth Factor (CGF) as an innovative approach to accelerate wound healing and increase the connective tissue seal around dental implants. Results 40% and 80% Concentrations of CGF significantly improved human gingival fibroblasts (HGF) viability compared to the control group (P value = 0.001). But the comparison of the other group with the control group was not statistically significant. The difference between 40% and 80% concentrations of CGF was not statistically significant (P value = 0.061). Results showed that the viability of HGF treated with CGF on titanium discs(test groups 2) significantly increased as compared to the test groups 1(without CGF) at 24 hours (P value = 0.001).Our results showed that 40% concentration of CGF at 24 hours significantly increased HGF viability.


Blood ◽  
1999 ◽  
Vol 93 (4) ◽  
pp. 1208-1220 ◽  
Author(s):  
Yi Zhang ◽  
Yan-yun Zhang ◽  
Masafumi Ogata ◽  
Pan Chen ◽  
Akihisa Harada ◽  
...  

We have recently demonstrated that CD11b−/dullCD11c+ and CD11b+hiCD11c+ dendritic cell (DC) precursor subsets represent two distinct DC differentiation pathways from murine bone marrow lineage-phenotype negative (Lin−)c-kit+ hematopoietic progenitor cells (HPCs) stimulated with granulocyte-macrophage colony-stimulating factor (GM-CSF) + stem cell factor (SCF) + tumor necrosis factor  (TNF). We show here that transforming growth factor-β1 (TGF-β1) significantly inhibits the generation of these CD11b−/dullCD11c+ and CD11b+hiCD11c+ DC precursors. Phenotypically, this inhibitory effect was accompanied by markedly suppressed expression of Ia and CD86 antigens as well as major histocompatibility complex (MHC) class II transactivator (CIITA) and CC-chemokine receptor 7 (CCR7) mRNAs in Lin−c-kit+ HPC cultures stimulated with GM-CSF + SCF + TNF at day 6. TGF-β1 could also suppress mature DC differentiation from CD11b+hiCD11c+ DC precursors, but not the differentiation from CD11b−/dullCD11c+ DC precursors. In the absence of TNF, TGF-β1 markedly suppressed the expression of CIITA and CCR7 mRNAs in GM-CSF + SCF-stimulated Lin−c-kit+ HPCs at either day 6 or day 12 and induced the differentiation solely into monocytes/macrophages as evident in morphology, active phagocytic, and endocytic activities. These cells expressed high levels of F4/80 and E-cadherin antigens, but low or undetectable levels of Ia, CD86, and CD40 molecules. However, upon the stimulation with TNF + GM-CSF, these cells could further differentiate into mature DCs expressing high levels of Ia and E-cadherin, characteristics for Langerhans cells (LCs), and gained the capacity of enhancing allogenic MLR. Taken together, all of these findings suggest that TGF-β1 polarizes murine HPCs to generate LC-like DCs through a monocyte/macrophage differentiation pathway.


Tumor Biology ◽  
2012 ◽  
Vol 33 (5) ◽  
pp. 1477-1484 ◽  
Author(s):  
Liu Yang ◽  
Mei Liu ◽  
Chuanzong Deng ◽  
Zhikai Gu ◽  
Yilu Gao

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