Implications of microRNAs in colorectal cancer development, diagnosis, prognosis, and therapeutics

Haiyan Zhai1, Jingfang Ju

  • 1Translational Research Laboratory, Department of Pathology, State University of New York at Stony Brook, Stony Brook, NY, USA.

Frontiers in Genetics
|November 25, 2011
PubMed

Insights

MicroRNAs (miRNAs) are small RNAs regulating genes. This review highlights their crucial roles in colorectal cancer (CRC) progression, stem cells, and potential as diagnostic and therapeutic biomarkers.

Area of Science:

  • Molecular Biology
  • Genetics
  • Oncology

Background:

  • MicroRNAs (miRNAs) are key post-transcriptional regulators.
  • Dysregulated miRNAs are implicated in various human diseases, including cancer.
  • Colorectal cancer (CRC) presents a significant global health challenge.

Purpose of the Study:

  • To review recent advancements in miRNA research concerning colorectal cancer.
  • To elucidate the multifaceted roles of miRNAs in CRC pathogenesis and progression.
  • To explore the potential of miRNAs as biomarkers and therapeutic targets in CRC.

Main Methods:

  • Literature review of recent studies on miRNAs in CRC.
  • Synthesis of findings related to miRNA functions in CRC stem cells.
  • Analysis of miRNA involvement in epithelial-to-mesenchymal transition and chemoresistance.

Main Results:

  • miRNAs play critical roles in colorectal cancer stem cell maintenance and function.
  • miRNA dysregulation contributes to epithelial-to-mesenchymal transition, impacting CRC metastasis.
  • Specific miRNAs are associated with chemoresistance, influencing treatment outcomes in CRC patients.
  • miRNAs show promise as diagnostic and prognostic biomarkers for colorectal cancer.

Conclusions:

  • MicroRNAs are pivotal regulators in colorectal cancer, influencing key processes.
  • miRNAs represent a promising avenue for novel diagnostic, prognostic, and therapeutic strategies in CRC.
  • Further research into miRNA mechanisms can unlock new treatments for colorectal cancer.

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...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...