Long non-coding RNAs: Fundamental regulators and emerging targets of cancer stem cells

Aboo Shabna1, Sadanandhan Bindhya2, Chirukandath Sidhanth2

  • 1Laboratory for Cancer Biology, Departments of Medical Oncology and Clinical Research, Cancer Institute (WIA), Chennai 600020, India; Laboratory for Cancer Biology, Department of Medical Oncology, Sri Ramachandra Institute of Higher Education and Research, Porur, Chennai 610016, India; Department of Endocrinology, Indian Council of Medical Research - National Institute of Nutrtion, Tarnaka, Hyderabad 50007, India.

Insights

Long non-coding RNAs (lncRNAs) show promise in targeting cancer stem cells (CSCs), which drive drug resistance and metastasis. This review highlights CSC-specific lncRNAs for developing novel cancer therapies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Cancer remains a leading global cause of death, often due to ineffective therapies and recurrence from metastatic disease.
  • Cancer stem cells (CSCs) are implicated in drug resistance, metastasis, and cancer aggressiveness, making them a critical therapeutic target.
  • Long non-coding RNAs (lncRNAs) are increasingly recognized for their roles in various biological processes, including cancer development.

Purpose of the Study:

  • To review and highlight lncRNAs with specific regulatory functions in cancer stem cells (CSCs).
  • To discuss challenges and methodologies for identifying CSC-specific lncRNAs.
  • To focus on lncRNAs with strong functional evidence for CSC regulation and potential as drug targets.

Main Methods:

  • Literature review of scientific publications.
  • Analysis of functional evidence for lncRNA involvement in CSCs.
  • Examination of mechanistic roles of lncRNAs in CSC regulation.

Main Results:

  • Identification of specific lncRNAs demonstrating functional roles in CSC maintenance and regulation.
  • Discussion of methods for isolating and validating CSC-specific lncRNAs.
  • Highlighting lncRNAs with significant potential for CSC-targeted drug development.

Conclusions:

  • CSCs are key drivers of cancer progression and therapeutic resistance.
  • CSCs-specific lncRNAs represent a promising avenue for novel cancer drug development.
  • Targeting CSC-regulating lncRNAs may overcome drug resistance and improve patient outcomes.

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...
8.7K
Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
5.0K
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...
3.1K
Types of RNA01:20

Types of RNA

Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
5.9K
Distinctive Features of Adult Stem Cells vs Cancer Stem Cells01:18

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...
3.6K
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
957