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Author Spotlight: RNA FISH for Locating lncRNA-SNHG6 in Osteosarcoma Cells
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Author Spotlight: RNA FISH for Locating lncRNA-SNHG6 in Osteosarcoma Cells

Published on: June 16, 2023

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lncRNA HCG11 suppresses human osteosarcoma growth through upregulating p27 Kip1

Jie Gu1, Bo Dai1, Xuchao Shi1

  • 1Department of Orthopaedics Surgery, Beilun People's Hospital, Ningbo, Zhejiang, China.

Aging
|September 14, 2021
PubMed

Insights

Long non-coding RNA HCG11 is downregulated in osteosarcoma (OS), a bone cancer. Restoring HCG11 restrains OS growth by increasing p27 Kip1 expression, offering a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Osteosarcoma (OS) is a prevalent bone cancer in pediatric and young adult populations.
  • Long non-coding RNAs (lncRNAs) are increasingly recognized for their significant roles in OS progression.

Purpose of the Study:

  • To investigate the functional role of lncRNA human leukocyte antigen complex group 11 (HCG11) in osteosarcoma.
  • To elucidate the molecular mechanisms underlying HCG11's function in OS.

Main Methods:

  • Quantitative real-time PCR to assess HCG11 expression levels in OS tissues and cell lines.
  • In vitro assays (proliferation, cell cycle, DNA replication) and in vivo tumor xenograft models to evaluate HCG11's biological functions.
  • Mechanism studies involving RNA immunoprecipitation and Western blotting to confirm interactions between HCG11, miR-942-5p, IGF2BP2, and p27 Kip1.

Main Results:

  • HCG11 expression was significantly decreased in OS tissues compared to normal tissues, correlated with tumor size and patient survival.
  • Overexpression of HCG11 inhibited OS cell proliferation, cell cycle progression, and DNA replication in vitro, and suppressed tumor growth in vivo.
  • HCG11 was found to upregulate p27 Kip1 expression by sponging miR-942-5p and interacting with IGF2BP2, with p27 Kip1 mediating HCG11's tumor-suppressive effects.

Conclusions:

  • HCG11 is downregulated in osteosarcoma, acting as a tumor suppressor.
  • HCG11 inhibits OS progression by enhancing p27 Kip1 expression through the miR-942-5p/IGF2BP2 axis.
  • HCG11 represents a potential therapeutic target for osteosarcoma treatment.
Keywords:
IGF2BP2human leukocyte antigen complex group 11long non-coding RNAmiR-942-5posteosarcomap27 Kip1

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