Long noncoding RNAs in intestinal homeostasis, regeneration, and cancer

Vipin K Yadav1, Amit Kumar1, Prem P Tripathi2,3

  • 1CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow, India.

Insights

Long noncoding RNAs (lncRNAs) are crucial regulators of intestinal homeostasis, regeneration, and cancer. These noncoding RNAs offer promising potential as diagnostic and therapeutic markers for intestinal diseases.

Area of Science:

  • Molecular Biology
  • Genomics
  • Oncology

Background:

  • Protein-level targeting of deregulated signaling pathways in human malignancies has yielded limited success.
  • A significant portion of the human genome (approximately 75%) is transcribed into noncoding RNAs, with long noncoding RNAs (lncRNAs) playing critical regulatory roles.
  • lncRNAs are implicated in regulating tissue homeostasis, regeneration, and the development of various cancers, including intestinal cancer.

Purpose of the Study:

  • To summarize recently discovered long noncoding RNAs (lncRNAs) involved in intestinal homeostasis, regeneration, and tumorigenesis.
  • To highlight the role of lncRNAs in regulating intestinal stem cells, injury-induced regeneration, and intestinal tumor initiation and progression.
  • To present lncRNAs as potential diagnostic and therapeutic markers for intestinal pathologies.

Main Methods:

  • Literature review of high-throughput sequencing technologies and studies on noncoding RNAs.
  • Analysis of research on the function of lncRNAs in intestinal stem cell regulation, regeneration, and cancer development.
  • Synthesis of current findings on lncRNAs as biomarkers in intestinal diseases.

Main Results:

  • lncRNAs are key regulators of fundamental cellular processes, including tissue homeostasis and regeneration.
  • Dysregulation of lncRNAs is observed in various human malignancies, particularly intestinal cancer.
  • Emerging evidence points to the involvement of lncRNAs in intestinal stem cell function, regeneration after injury, and the initiation and progression of intestinal tumors.

Conclusions:

  • Long noncoding RNAs (lncRNAs) are pivotal in maintaining intestinal homeostasis and orchestrating regeneration processes.
  • lncRNAs represent a significant area of research for understanding and treating intestinal pathologies, including cancer.
  • The diagnostic and therapeutic potential of lncRNAs in intestinal diseases warrants further investigation and development.

Related Concept Videos

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...
9.3K
lncRNA - Long Non-coding RNAs02:39

lncRNA - Long Non-coding RNAs

3.1K
Role Of Notch Signalling In Intestinal Stem Cell Renewal01:12

Role Of Notch Signalling In Intestinal Stem Cell Renewal

Notch signaling was first discovered in Drosophila melanogaster, where it is involved in cell lineage differentiation. Notch signaling regulates the maintenance and differentiation of intestinal stem cells or ISCs by controlling the expression of atonal homolog 1 or Atoh1. Atoh1 directs cells to differentiate into secretory cells.
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
2.2K
Renewal of Intestinal Stem Cells01:23

Renewal of Intestinal Stem Cells

The intestinal epithelial lining rapidly renews every 4 to 5 days. The renewal is facilitated by intestinal stem cells (ISCs) located at the base of the crypt– a gland located at the bottom of each villus. ISCs divide asymmetrically to form new stem cells and progenitor daughter cells. The daughter cells are called transit-amplifying (TA) cells which move upwards along the crypt and either differentiate into absorptive cells– the enterocytes or secretory cells– including the...
2.9K
Non-LTR Retrotransposons03:18

Non-LTR Retrotransposons

As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
12.4K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal01:22

Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal

Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.4K