title: [Influence of TLR2 and TLR4 agonists on migration of human bone marrow mesenchymal stem cells].
abstract: This study was aimed to investigate the influence of TLR2 and TLR4 agonists on the migration and adhesion activity of human bone marrow-derived mesenchymal stem cells (MSC) and to clarify the underlying mechanisms. The expression of TLR2 and TLR4 on MSC was detected by flow cytometry. The effects of TLR2 agonist (PAM3CSK4) and TLR2 agonist (LPS) on MSC migration and adhesion ability were evaluated with chemotaxis and adhesion test. The results indicated that expressive levels of TLR2 and TLR4 on surface of human bone marrow MSC were (24.5 ± 3.2)% and (91.3 ± 5.2)% respectively. Compared with the control group, the migration activity of MSC toward SDF-1 was decreased significantly in PAM3CSK4 group, while the adhesion activity of MSC was promoted by PAM3CSK4 exposure. However, both the migration activity toward SDF-1 and the adhesion activity of MSC were not changed significantly in LPS-treated group. Further, it was found that PAM3CSK4 did not affect the expressive level of CXCR4 on MSC, however, it could inhibit the spontaneous migration of MSC in dose dependent manner. It is concluded that activation of TLR2 can decrease the migration ability of MSC, which may associate with the decreased spontaneous migration ability and the increased adhesion activity of MSC.
authors.affiliation: Department of Hematology, Anhui Provincial Hospital, Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Zong-Hai
authors.initials: ZH
authors.lastname: Yang
authors.affiliation: Department of Hematology, Anhui Provincial Hospital, Anhui Medical University, Hefei 230001, Anhui Province, China. E-mail: wangxingbing91@hotmail.com.
authors.forename: Xing-Bing
authors.initials: XB
authors.lastname: Wang
authors.affiliation: Department of Hematology, Anhui Provincial Hospital, Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Hematology, Anhui Provincial Hospital, Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Lai-Ling
authors.initials: LL
authors.lastname: Li
authors.affiliation: Department of Hematology, Anhui Provincial Hospital, Anhui Medical University, Hefei 230001, Anhui Province, China.
authors.forename: Yun-Xia
authors.initials: YX
authors.lastname: Zhu
mesh_terms: D001854:Bone Marrow Cells / Q000166:cytology / Q000187:drug effects; D002465:Cell Movement / Q000187:drug effects*; D002478:Cells, Cultured; D006801:Humans; D055666:Lipopeptides / Q000494:pharmacology; D008070:Lipopolysaccharides / Q000494:pharmacology; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000187:drug effects*; D051195:Toll-Like Receptor 2 / Q000819:agonists*; D051197:Toll-Like Receptor 4 / Q000819:agonists*
chemical_list: D055666:Lipopeptides; D008070:Lipopolysaccharides; C508075:Pam(3)CSK(4) peptide; C495342:TLR2 protein, human; C495345:TLR4 protein, human; D051195:Toll-Like Receptor 2; D051197:Toll-Like Receptor 4