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miR-29a 通过靶向 DPP4 抑制乳头状甲状腺癌的增殖、侵袭和迁移
Authors Wang Y, Han J, Lv Y, Zhang G
Received 14 January 2019
Accepted for publication 15 April 2019
Published 28 May 2019 Volume 2019:12 Pages 4225—4233
DOI https://doi.org/10.2147/OTT.S201532
Checked for plagiarism Yes
Review by Single-blind
Peer reviewers approved by Dr Jyoti Bajaj
Peer reviewer comments 2
Editor who approved publication: Dr Federico Perche
Purpose: The
purpose of this study was to investigate the effects of miR-29a on papillary
thyroid cancer (PTC) and its underlying mechanisms.
Methods: Primary
tumor tissues and adjacent tissues of 69 patients with PTC were obtained. Human
thyroid cell line Nthy-ori3-1 and PTC cell lines K1, BCPAP, TPC-1 were
cultured. K1 cells were transfected and divided into following groups: blank
group (without any treatment), miR-29a mimics group, control mimics group,
miR-29a inhibitor group, control inhibitor group, DPP4 siRNA group, control
siRNA group and miR-29a inhibitor + DPP4 siRNA group. qRT-PCR and Western blot
were used to detect miR-29a and DPP4 expression.
3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and
transwell assay were performed to detect cells proliferation, migration, and
invasion. A nude mice xenograft experiment was performed.
Results: miR-29a
was significantly downregulated in PTC tissues, K1 and TPC-1 cells (P <0.01). DPP4
was significantly upregulated in the miR-29a inhibitor group and significantly
downregulated in the miR-29a mimics group (P <0.01). DPP4 was the target gene of miR-29a.
miR-29a significantly inhibited K1 cell proliferation, invasion, migration and
PTC growth in nude mice by targeting DPP4 (P <0.01).
Conclusion: miR-29a
inhibits proliferation, migration, and invasion of PTC by targeting DPP4, which
might provide a new target for clinical treatment of PTC.
Keywords: PTC,
miR-29a, DPP4, proliferation, migration