MicroRNA-650 expression in glioma is associated with prognosis of patients

Boqian Sun1, Bo Pu, Dake Chu

  • 1Medical Department of Neurology, Affiliated Hospital of Beihua University, Jilin, 132011, People's Republic of China, sunboqian@live.cn.

Journal of Neuro-Oncology
|September 25, 2013
PubMed

Insights

MicroRNA-650 (miR-650) is elevated in glioma and indicates a worse prognosis for patients. This microRNA may serve as a valuable prognostic marker for glioma management.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • MicroRNAs (miRNAs) are non-coding RNAs regulating gene expression.
  • Aberrant miRNA expression is linked to various human malignancies.
  • The prognostic role of miR-650 in glioma remains uninvestigated.

Purpose of the Study:

  • To investigate the expression of miR-650 in human glioma.
  • To evaluate the association between miR-650 expression and glioma patient prognosis.

Main Methods:

  • Quantitative real-time PCR to measure miR-650 expression in 168 glioma specimens and 21 normal brain tissues.
  • Kaplan-Meier analysis and Cox's proportional hazards model to assess prognostic value.

Main Results:

  • miR-650 expression was significantly higher in glioma tissues compared to normal controls (P < 0.001).
  • Elevated miR-650 correlated with higher World Health Organization grade and lower Karnofsky performance score (KPS) (P < 0.001).
  • High miR-650 expression was associated with significantly poorer patient prognosis.

Conclusions:

  • miR-650 is upregulated in glioma and serves as a significant independent prognostic indicator.
  • miR-650 expression levels can predict patient outcomes in human glioma.
  • This finding may inform novel therapeutic strategies for glioma treatment.

Related Concept Videos

MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
Tumor Progression02:07

Tumor Progression

Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...