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Journal of Cell Communication and Signaling

, Volume 13, Issue 3, pp 395–405 | Cite as

CLDN10 promotes a malignant phenotype of osteosarcoma cells via JAK1/Stat1 signaling

  • Xiaowei Zhang
  • Xianbin Wang
  • Aiyu Wang
  • Qian Li
  • Ming Zhou
  • Tao LiEmail author
Research Article
  • 122 Downloads

Abstract

In our previous study, the expression profile of tight junction (TJ) protein claudins (CLDNs) in human osteosarcoma (OS) cells was examined, and the data found the CLDN10 was high expressed in OS cells versus fetal osteoblast cells. Hence, we aim to determine the impacts and the molecular mechanisms of CLDN10 in the metastatic phenotype of OS. The exact expression profiles of CLDN10 and phosphorylated Janus kinase 1 (JAK1) in noncancerous bone tissues and OS tissues were detected via a western blotting and immunohistochemistry method. The OS cells with CLDN10 or JAK1 silencing was established via an RNA interference (RNAi) method, and an osteoblast cell line stably expressing CLDN10 was established via cell transfection. Then, the transfection effects and activation states of JAK1/ signal transducer and activator of transcription1 (Stat1) pathway in OS and osteoblast cells were detected via a western blotting assay. Moreover, the metastatic ability of osteoblast cells and OS cells in vitro were evaluated by means of a cell counting kit-8 (CCK8) assay, colony formation assay in soft agar, transwell assay and wound-healing experiment. The present data revealed that CLDN10 and phospho-JAK1 were up-regulated in OS tissues compared with noncancerous bone tissues. Genetic loss of CLDN10 or JAK1 inhibited the activation of the Stat1 and the malignant phenotype in OS cells. To sum up, our study suggested the CLDN10 enhanced the metastatic phenotype of OS cells via the activation of the JAK1/Stat1 signaling pathway.

Keywords

Claudin-10 Osteosarcoma Janus kinase 1 Signal transducer and activator of transcription1 Metastasis 

Abbreviations

CCK8

Cell counting kit-8

CLDNs

Claudins

TJ

Tight junction

IHC

Immunohistochemical analysis

RNAi

RNA interference

OS

Osteosarcoma

JAK1

Janus kinase 1

Stat1

Signal transducer and activator of transcription1

Notes

Acknowledgements

We would like to thank American Journal Experts (AJE) for English language editing. This manuscript was edited for English language by American Journal Experts (AJE).

Author contributions

XZ, XW and AW performed the experiments and analyzed the data. MZ and QL contributed to the conception and design of the study. TL revised the manuscript critically for important intellectual content. All authors read and approved the final manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Ethics approval (approval no. SDU06384) was approved by the Ethics Committee of Central Hospital of Zibo, Affiliated with Shandong University. This article does not contain any studies with animals performed by any of the authors. The informed consent for participation was obtained from all patients and their parents who participated in this study in an appropriate method.

Consent for publication

Written informed consent was obtained from all patients and their parents who participated in this study.

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Copyright information

© The International CCN Society 2019

Authors and Affiliations

  1. 1.Department of Orthopedic Surgery, Central Hospital of ZiboAffiliated with Shandong UniversityZiboChina
  2. 2.Center for Translational Medicine, Central Hospital of ZiboAffiliated with Shandong UniversityZiboChina
  3. 3.Department of Rehabilitation, Central Hospital of ZiboAffiliated with Shandong UniversityZiboChina

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