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Related Concept Videos

Liver Regeneration01:24

Liver Regeneration

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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
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
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Related Experiment Video

Updated: Oct 7, 2025

Basement Membrane Matrix Encapsulated Cell Aggregation for Investigating Murine Spleen Tissue Formation
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Reprogramming the spleen into a functioning 'liver' in vivo.

Chunyan Liu1, Lintao Wang1,2, Mengzhen Xu1

  • 1State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, China.

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|January 8, 2022
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Summary
This summary is machine-generated.

Scientists reprogrammed mouse spleen cells into functional liver cells (iHeps) using specific factors. This spleen-to-liver conversion improved survival after major liver surgery, offering potential for liver disease treatment.

Keywords:
gene transferliver regenerationmyofibroblasts

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Intrasplenic Transplantation of Hepatocytes After Partial Hepatectomy in NOD.SCID Mice
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Area of Science:

  • Regenerative Medicine
  • Cellular Reprogramming
  • Hepatology

Background:

  • Liver regeneration is a significant clinical hurdle.
  • Developing alternative strategies for liver function restoration is crucial.

Purpose of the Study:

  • To investigate the direct in vivo reprogramming of splenic fibroblasts into hepatocytes.
  • To transform the spleen into a functional, liver-like organ.

Main Methods:

  • Stimulation of splenic fibroblasts using silica particles (SiO2).
  • Lentiviral transfection with transcription factors (Foxa3, Gata4, Hnf1a) to induce hepatocyte differentiation.
  • Expansion of induced hepatocytes (iHeps) using tumor necrosis factor-alpha (TNF-α), epidermal growth factor (EGF), and hepatocyte growth factor (HGF).

Main Results:

  • SiO2 stimulation increased fibroblast numbers threefold.
  • Reprogramming yielded 2x10^6 functional iHeps per spleen.
  • Further expansion resulted in 8x10^6 hepatocytes per spleen.
  • iHeps demonstrated key liver functions including glycogen storage, lipid metabolism, and drug metabolism.
  • Treatment improved survival rates in mice with 90% hepatectomy.

Conclusions:

  • Direct in vivo splenic conversion into a liver-like organ is achievable without transplantation.
  • This approach establishes fundamental hepatic functions in mice.
  • The method shows potential for treating end-stage liver diseases.