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Decoding the Role of H19 in Cholestatic Liver Injury Using snRNA-seq, Spatial Transcriptomics, and Machine

Grayson Welch Way1, Xixian Jiang1, Hongkun Lu1

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Summary
This summary is machine-generated.

The long non-coding RNA H19 drives Primary Sclerosing Cholangitis (PSC) by promoting pathogenic cholangiocyte states. Deleting H19 (H19 deletion) mitigates liver injury and restores normal signaling, positioning H19 as a therapeutic target for PSC.

Keywords:
CholestasisH19Long non-coding RNAMachine learningPrimary sclerosing cholangitisSPP1

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Area of Science:

  • Hepatology and molecular biology
  • Genomics and transcriptomics
  • Disease modeling

Background:

  • Primary Sclerosing Cholangitis (PSC) is a chronic cholestatic liver disease with no approved therapies.
  • The long non-coding RNA H19 (H19) is implicated in PSC progression, but its precise mechanisms are unclear.
  • Understanding H19's cell-type-specific roles is crucial for developing new PSC treatments.

Purpose of the Study:

  • To investigate the cell-type-specific and spatial mechanisms of H19 in cholestatic liver injury.
  • To determine if H19 deletion ameliorates PSC-like pathology in a murine model.
  • To identify potential therapeutic strategies targeting H19 in PSC.

Main Methods:

  • Utilized age- and sex-matched wild type, H19 knockout, Mdr2 knockout, and double-knockout mice.
  • Employed single nucleus RNA sequencing (snRNAseq) and NanoString GeoMx spatial transcriptomics.
  • Developed and validated machine learning models for cell-type specific disease prediction using murine and human datasets.

Main Results:

  • H19 deletion diminished a disease-associated cholangiocyte subcluster, indicating H19's role in sustaining pathogenic states.
  • SPP1 signaling dysregulation in cholestatic liver injury was ameliorated by H19 deletion.
  • Spatial transcriptomics revealed that H19 deletion restored normal gene expression in the bile duct region.

Conclusions:

  • H19 deletion mitigates cholestatic liver injury by suppressing pathogenic cholangiocyte states and normalizing SPP1 signaling.
  • H19 is a critical regulator of cholangiocyte-driven pathology in PSC.
  • H19 represents a potential therapeutic target for Primary Sclerosing Cholangitis.