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ResearchIn-Press PreviewCell biologyHepatology Open Access | 10.1172/JCI197923

RNA-binding protein LARP6 coordinates hepatic stellate cell activation and liver fibrosis

Hyun Young Kim,1 Orel Mizrahi,2 Wonseok Lee,1 Sara B. Rosenthal,3 Cuijuan Han,1 Brian A. Yee,2 Steven M. Blue,2 Jesiel Diaz,2 Jyotiprakash P. Jonnalagadda,2 Lena A. Street,4 Kanani Hokutan,1 Haeum Jang,1 Charlene Miciano,2 Chen-Ting Ma,5 Andrey A. Bobkov,5 Eduard Sergienko,5 Michael R. Jackson,5 Marko Jovanovic,4 Branko Stefanovic,6 Tatiana Kisseleva,7 Gene W. Yeo,2 and David A. Brenner8

1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

Find articles by Kim, H. in: PubMed | Google Scholar

1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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1Department of Medicine, University of California San Diego, La Jolla, United States of America

2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

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4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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2Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, United States of America

3Center for Computational Biology and Bioinformatics, University of California San Diego, La Jolla, United States of America

4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

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4Department of Biological Sciences, Columbia University, New York, United States of America

5Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

6Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, United States of America

7Department of Surgery, University of California San Diego, La Jolla, United States of America

8Department of Medicine, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, United States of America

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Published February 26, 2026 - More info

J Clin Invest. https://doi.org/10.1172/JCI197923.
Copyright © 2026, Kim et al. This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Published February 26, 2026 - Version history
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Abstract

Metabolic syndrome and excessive alcohol consumption (MetALD) result in liver injury and fibrosis, which is driven by increased collagen production by activated hepatic stellate cells (HSCs). Our previous studies demonstrated that LARP6, an RNA-binding protein, may facilitate collagen production. However, the expression and function of LARP6 as a regulator of fibrosis development in a disease-relevant model remain poorly understood. We demonstrated that LARP6 was upregulated in human activated HSCs in metabolic dysfunction-associated steatohepatitis (MASH) and MetALD. By using snRNA/ATAC-sequencing, we showed that JUNB upregulated LARP6 expression in activated HSCs. Moreover, LARP6 knockdown in human HSCs suppressed fibrogenic gene expression. By integrating eCLIP analysis and ribosome profiling in HSCs, we showed that LARP6 interacted with mature mRNAs comprising over 300 genes, including RNA structural elements within COL1A1, COL1A2, and COL3A1 to regulate mRNA expression and translation. IP-MS analysis demonstrated LARP6 protein–protein interactions with mRNA translation components and the actin cytoskeleton. Furthermore, dsiRNA-based HSC-specific gene knockdown or pharmacological inhibition of LARP6 attenuated fibrosis development in human MASH and MetALD liver spheroids. Our results suggest LARP6 plays a key role in fibrogenic gene regulation and that targeting LARP6 in human HSCs may represent a therapeutic approach for liver fibrosis.

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