Functional role of microRNA-135a in colitis

Chunyan Lou1, Yanyang Li1

  • 1Department of Pediatrics, Huaihe Hospital of Henan University, No. 8, Baobei Road, Gulou District, Kaifeng, 475000 China.

Abstract

Insights

MicroRNA-135a (miR-135a) is suppressed in inflammatory bowel disease (IBD). Upregulating miR-135a inhibits colon cell apoptosis and inflammation, suggesting a therapeutic role for IBD.

Area of Science:

  • Gastroenterology
  • Molecular Biology
  • Oncology

Background:

  • Inflammatory bowel disease (IBD) is linked to increased colon cancer risk.
  • Apoptosis and inflammation are key factors in IBD development.
  • MicroRNAs (miRNAs) are implicated in the etiology of various diseases, including IBD.

Purpose of the Study:

  • To investigate the role of miR-135a in the pathogenesis of colitis.
  • To explore miR-135a's potential as a therapeutic target in inflammatory bowel disease.

Main Methods:

  • Utilized a murine model of DSS-induced colitis.
  • Assessed miR-135a expression in colonic cells.
  • Manipulated miR-135a levels and Hif1α expression to evaluate effects on apoptosis and inflammation.

Main Results:

  • miR-135a expression was found to be suppressed in colonic cells of the colitis model.
  • Upregulating miR-135a significantly inhibited apoptosis and inflammation in colonic epithelial cells.
  • Hif1α was identified as a direct target of miR-135a; its knockdown suppressed apoptosis and inflammation.

Conclusions:

  • Overexpression of miR-135a demonstrates anti-apoptotic and anti-inflammatory effects in vitro.
  • miR-135a holds potential as a therapeutic agent for inflammatory bowel disease.

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...
24.3K
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...
4.1K
Drugs for Treatment of Ulcerative Colitis in IBD01:29

Drugs for Treatment of Ulcerative Colitis in IBD

Ulcerative colitis is a chronic inflammatory condition primarily affecting the colon and rectum. The primary drugs used in the treatment of ulcerative colitis are aminosalicylates. They exhibit anti-inflammatory and immunosuppressive properties. They modulate inflammatory mediators and inhibit the activity of nuclear factor κB (NF-κB). Aminosalicylates also reduce inflammation by inhibiting prostaglandin and leukotriene production and decreasing neutrophil chemotaxis and superoxide...
535
Inflammatory Bowel Disease I: Ulcerative Colitis01:27

Inflammatory Bowel Disease I: Ulcerative Colitis

Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
1.1K
Role of Septins01:02

Role of Septins

Septins are the recently discovered fourth major protein component of the cytoskeleton, along with microfilaments, microtubules, and intermediate filaments. These proteins can associate with other cytoskeletal filaments and carry out varied roles or can be free-floating in the cytoplasm.
Cellular Functions of Septins
Recent studies have revealed the multifaceted roles of septins in various cellular processes such as cytokinesis, ciliogenesis, and neurogenesis. Septins act as scaffolds and...
2.2K
The Role of Culture01:23

The Role of Culture

Culture plays a crucial role in shaping self-identity and influencing thought and behavior, a foundational interest within social psychology. The multicultural perspective recognizes that individuals do not exist in a vacuum; instead, their experiences, perceptions, and actions are deeply influenced by the intersecting dimensions of their cultural, ethnic, and social group affiliations.Cultural Influence on Self-Identity and Social PerceptionCultural frameworks inform how individuals define...
440