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Cytotoxic Efficacy of Photodynamic Therapy in Osteosarcoma Cells In Vitro
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ING5 is a Potential Target for Osteosarcoma Therapy.

Xing Zhang1, Zhong-Hua Xu1, Hua Xie1

  • 11 Department of Orthopedics, Jintan Hospital Affiliated to Jiangsu University, Jintan, Jiangsu, People's Republic of China.

Technology in Cancer Research & Treatment
|March 13, 2018
PubMed
Summary
This summary is machine-generated.

Inhibitor of growth family of protein 5 (IGF5) is downregulated in osteosarcoma. Overexpressing IGF5 induces apoptosis and inhibits proliferation by activating the Smad pathway, suggesting its potential as an osteosarcoma treatment.

Keywords:
ING5apoptosisosteosarcomasurvival ratethe Smad pathway

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Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Osteosarcoma is a common primary malignant bone tumor.
  • The inhibitor of growth family of protein 5 (IGF5) acts as a tumor suppressor in various cancers.
  • IGF5 downregulation is observed in osteosarcoma tissues.

Purpose of the Study:

  • To investigate the antitumor roles of IGF5 in osteosarcoma.
  • To determine the mechanism by which IGF5 affects osteosarcoma cell behavior.
  • To explore the potential of IGF5 as a therapeutic target for osteosarcoma.

Main Methods:

  • Western blot and real-time polymerase chain reaction to confirm IGF5 downregulation.
  • Transfection of osteosarcoma cell lines (HOS, MG63) with IGF5 plasmid.
  • Analysis of apoptosis, cell proliferation, and Smad pathway activation (p-Smad2, p-Smad3, Smad4).

Main Results:

  • IGF5 and its mRNA levels were confirmed to be downregulated in osteosarcoma tissues.
  • Overexpression of IGF5 in osteosarcoma cells induced apoptosis and inhibited cell proliferation.
  • Activation of the Smad pathway (increased p-Smad2, p-Smad3, and Smad4) was observed in IGF5-expressing cells.

Conclusions:

  • Overexpression of IGF5 induces apoptosis in osteosarcoma cells via Smad pathway activation.
  • IGF5 demonstrates significant antitumor effects in osteosarcoma.
  • IGF5 presents a promising therapeutic target for osteosarcoma treatment.