HMGB1 promotes ductular reaction and tumorigenesis in autophagy-deficient livers

Bilon Khambu, Nazmul Huda, Xiaoyun Chen, Daniel J. Antoine, Yong Li, Guoli Dai, Ulrike A. Köhler, Wei Xing Zong, Satoshi Waguri, Sabine Werner, Tim D. Oury, Zheng Dong, Xiao Ming Yin

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Autophagy is important for liver homeostasis, and the deficiency leads to injury, inflammation, ductular reaction (DR), fibrosis, and tumorigenesis. It is not clear how these events are mechanistically linked to autophagy deficiency. Here, we reveal the role of high-mobility group box 1 (HMGB1) in two of these processes. First, HMGB1 was required for DR, which represents the expansion of hepatic progenitor cells (HPCs) implicated in liver repair and regeneration. DR caused by hepatotoxic diets (3,5-diethoxycarbonyl-1,4-dihydrocollidine [DDC] or choline-deficient, ethionine-supplemented [CDE]) also depended on HMGB1, indicating that HMGB1 may be generally required for DR in various injury scenarios. Second, HMGB1 promoted tumor progression in autophagy-deficient livers. Receptor for advanced glycation end product (RAGE), a receptor for HMGB1, was required in the same two processes and could mediate the proliferative effects of HMBG1 in isolated HPCs. HMGB1 was released from autophagy-deficient hepatocytes independently of cellular injury but depended on NRF2 and the inflammasome, which was activated by NRF2. Pharmacological or genetic activation of NRF2 alone, without disabling autophagy or causing injury, was sufficient to cause inflammasome-dependent HMGB1 release. In conclusion, HMGB1 release is a critical mechanism in hepatic pathogenesis under autophagy-deficient conditions and leads to HPC expansion as well as tumor progression.

Original languageEnglish (US)
Pages (from-to)2419-2435
Number of pages17
JournalJournal of Clinical Investigation
Volume128
Issue number6
DOIs
StatePublished - Jun 1 2018

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Autophagy
Carcinogenesis
Hepatocytes
Liver
Inflammasomes
Stem Cells
Wounds and Injuries
Ethionine
Liver Regeneration
Choline
Neoplasms
Homeostasis
Fibrosis
Pharmacology
Diet
Inflammation

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Khambu, B., Huda, N., Chen, X., Antoine, D. J., Li, Y., Dai, G., ... Yin, X. M. (2018). HMGB1 promotes ductular reaction and tumorigenesis in autophagy-deficient livers. Journal of Clinical Investigation, 128(6), 2419-2435. https://doi.org/10.1172/JCI91814

HMGB1 promotes ductular reaction and tumorigenesis in autophagy-deficient livers. / Khambu, Bilon; Huda, Nazmul; Chen, Xiaoyun; Antoine, Daniel J.; Li, Yong; Dai, Guoli; Köhler, Ulrike A.; Zong, Wei Xing; Waguri, Satoshi; Werner, Sabine; Oury, Tim D.; Dong, Zheng; Yin, Xiao Ming.

In: Journal of Clinical Investigation, Vol. 128, No. 6, 01.06.2018, p. 2419-2435.

Research output: Contribution to journalArticle

Khambu, B, Huda, N, Chen, X, Antoine, DJ, Li, Y, Dai, G, Köhler, UA, Zong, WX, Waguri, S, Werner, S, Oury, TD, Dong, Z & Yin, XM 2018, 'HMGB1 promotes ductular reaction and tumorigenesis in autophagy-deficient livers', Journal of Clinical Investigation, vol. 128, no. 6, pp. 2419-2435. https://doi.org/10.1172/JCI91814
Khambu, Bilon ; Huda, Nazmul ; Chen, Xiaoyun ; Antoine, Daniel J. ; Li, Yong ; Dai, Guoli ; Köhler, Ulrike A. ; Zong, Wei Xing ; Waguri, Satoshi ; Werner, Sabine ; Oury, Tim D. ; Dong, Zheng ; Yin, Xiao Ming. / HMGB1 promotes ductular reaction and tumorigenesis in autophagy-deficient livers. In: Journal of Clinical Investigation. 2018 ; Vol. 128, No. 6. pp. 2419-2435.
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