[The function and application of nucleolar small RNAs in digestive tract tumors]

Y Y Qin1, Z Z Quan2

  • 1Clinical College of Jiangsu Medical College, Yancheng 224005,China.

Insights

Small nucleolar RNAs (snoRNAs) are key non-coding RNAs implicated in gastrointestinal cancers. Aberrant snoRNA expression drives tumor progression, offering potential for novel diagnostic and therapeutic strategies.

Area of Science:

  • Molecular Biology
  • Oncology
  • Genetics

Background:

  • Small nucleolar RNAs (snoRNAs) are non-coding RNAs crucial for ribosomal RNA modification and processing.
  • Aberrant snoRNA expression is increasingly recognized in gastrointestinal malignancies like gastric, colorectal, and esophageal cancers.

Purpose of the Study:

  • To review the expression profiles and functional mechanisms of snoRNAs in gastrointestinal cancers.
  • To discuss the potential of snoRNAs as biomarkers and therapeutic targets for these cancers.

Main Methods:

  • Literature review of studies on snoRNA expression and function in gastrointestinal cancers.
  • Analysis of the roles of snoRNAs in regulating gene expression and key cancer-related biological processes.

Main Results:

  • SnoRNAs regulate critical processes including tumor cell proliferation, apoptosis, invasion, migration, metabolism, drug resistance, and stemness.
  • Dysregulated snoRNA expression is linked to tumorigenesis and cancer progression in the gastrointestinal tract.

Conclusions:

  • SnoRNAs play significant roles in the development and progression of gastrointestinal cancers.
  • Understanding snoRNA mechanisms may lead to new insights for early diagnosis and precision therapy.

Related Concept Videos

Digestive Functions of the Large Intestine01:20

Digestive Functions of the Large Intestine

The large intestine is where the final stages of digestion happen. When the cecum receives chyme, it contains undigested carbohydrates that undergo fermentation. Gut bacteria ferment these carbohydrates to produce short-chain fatty acids that provide some energy and help synthesize essential vitamins.
As the chyme moves to the colon, it triggers two characteristic sluggish contractions - haustral churning and mass peristalsis. Haustral churning involves the rhythmic contraction and relaxation...
2.1K
siRNA - Small Interfering RNAs02:30

siRNA - Small Interfering RNAs

Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
18.5K
lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
9.8K
piRNA - Piwi-interacting RNAs02:57

piRNA - Piwi-interacting RNAs

PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
7.6K
Carbohydrate Digestion00:57

Carbohydrate Digestion

Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
122.1K
What is Monogastric Digestion?01:50

What is Monogastric Digestion?

The human body contains a monogastric digestive system. In a monogastric digestive system, the stomach only contains one chamber in which it digests food. Several other animal species also have monogastric digestive systems, including pigs, horses, dogs, and birds. This chapter, however, focuses on the human digestive system.
75.2K