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Liver Regeneration01:24

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The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
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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...
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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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De novo myogenesis, or the formation of muscle fibers, begins during the early embryonic stages. The skeletal muscle is formed from somites– blocks of embryonic cell layers. The somites are further divided into dermatomes, myotomes, sclerotomes, and syndetomes. Among these, the myotomes give rise to muscle fibers.
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[Research progress on the relationship between non-coding RNA and liver regeneration].

G T Li1, T Han2, Y Zhang1

  • 1The Third Central Clinical College of Tianjin Medical University, Tianjin 300170, China The Department of Hepatology and Gastroenterology of Tianjin Third Central Hospital, Tianjin 300170, China.

Zhonghua Gan Zang Bing Za Zhi = Zhonghua Ganzangbing Zazhi = Chinese Journal of Hepatology
|June 9, 2021
PubMed
Summary
This summary is machine-generated.

Non-coding RNAs, including microRNAs (miRNAs) and long non-coding RNAs (lncRNAs), are key regulators of liver regeneration after injury. Understanding their roles offers new therapeutic strategies for liver diseases.

Keywords:
Liver regenerationLong non-coding RNA (lncRNA)miRNA

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Area of Science:

  • Molecular Biology
  • Hepatology
  • Regenerative Medicine

Background:

  • Liver regeneration is a complex process crucial for recovery after partial hepatectomy or injury.
  • Hepatocytes transition from a quiescent to a proliferating state to repair liver damage.
  • Non-coding RNAs (ncRNAs) are increasingly recognized for their regulatory roles in biological processes.

Purpose of the Study:

  • To review the involvement of microRNAs (miRNAs) and long non-coding RNAs (lncRNAs) in liver regeneration.
  • To explore how these ncRNAs regulate hepatic progenitor cell (HPC) proliferation, apoptosis, and migration.
  • To highlight potential therapeutic strategies for liver disease and regeneration based on ncRNA functions.

Main Methods:

  • Literature review of studies investigating ncRNAs in liver regeneration.
  • Analysis of miRNA and lncRNA functions in regulating HPCs.
  • Synthesis of current knowledge on ncRNA-mediated pathways in liver repair.

Main Results:

  • miRNAs and lncRNAs are integral to the regulation of liver regeneration.
  • These ncRNAs modulate key cellular processes including proliferation, apoptosis, and migration of hepatic progenitor cells.
  • Specific miRNAs and lncRNAs have been identified as critical players in the regenerative response.

Conclusions:

  • ncRNAs, particularly miRNAs and lncRNAs, are vital regulators of liver regeneration.
  • Targeting ncRNAs presents promising therapeutic avenues for treating liver diseases and enhancing liver repair.
  • Further research into ncRNA mechanisms can lead to novel regenerative strategies.