Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Πέμπτη 18 Μαρτίου 2021

Ckip-1 regulates C3H10T1/2 mesenchymal cell proliferation and osteogenic differentiation via Lrp5

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Exp Ther Med. 2021 Apr;21(4):342. doi: 10.3892/etm.2021.9773. Epub 2021 Feb 10.

ABSTRACT

Casein kinase-2 interaction protein-1 (Ckip-1) is a negative regulator of bone formation. The identification of novel Ckip-1-related targets and their associated signaling pathways that regulate mesenchymal stem cell (MSC) osteogenic differentiation is required. The present study aimed to evaluate the effects of Ckip-1 knockdown on C3H10T1/2 MSC proliferation and osteogenic differentiation, and to explore the role of the canonical Wnt-signaling receptor Lrp5. Ckip-1-knockdown (shCkip-1), Ckip-1-overexpression (Ckip-1) and their corresponding control [shCtrl and empty vector (EV), respectively] cell groups were used in the present study. Immunofluorescence localization of Ckip-1 was observed. The expression of the key molecules of the canonical Wnt signaling pathway was examined in C3H10T1/2 cells following osteogenic induction. Moreover, the effect s of Lrp5 knockdown in the presence or absence of Ckip-1 knockdown were examined on C3H10T1/2 cell proliferation and osteogenic differentiation. The results indicated an increase in cell proliferation and osteogenic differentiation in the shCkip-1 group compared with the shCtrl group. The expression levels of LDL receptor related protein 5 (Lrp5), lymphoid enhancer binding factor 1 (Lef1) and transcription factor 1 in C3H10T1/2 cells were significantly increased in shCkip-1 cells following 7-day osteoinduction compared with shCtrl cells. Moreover, the involvement of Lrp5 in shCkip-1-induced osteogenic differentiation of C3H10T1/2 cells was further verified. The results indicated that Ckip-1 reduced C3H10T1/2 MSC proliferation and osteogenic differentiation via the canonical Wnt-signaling receptor Lrp5, which is essential for the improvement of bone tissue engineering.

PMID:33732315 | PMC:PMC7903475 | DOI:10.3892/etm.2021.9773

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