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Wakasa Y, Kimura N, Yamada T, Shimizu T, Hakamada K, Tsuchida S. Delay in hepatocyte proliferation and prostaglandin D2 synthase expression for cholestasis due to endotoxin during partial hepatectomy in rats. Mol Med Rep 2019; 20:4367-4375. [PMID: 31545425 PMCID: PMC6797974 DOI: 10.3892/mmr.2019.10681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 08/22/2019] [Indexed: 11/05/2022] Open
Abstract
Infection is a frequent complication of liver transplantation or partial hepatectomy (PH) and sometimes results in cholestasis. We examined factors involved in infection‑induced cholestasis after PH, employing a rat PH model and lipopolysaccharide (LPS) as a bacterial toxin. Male Sprague‑Dawley rats were subjected to 70% PH and/or LPS injection, and tissues were harvested at 0, 24, 72 and 168 h. Gene expression was analyzed by microarray analysis and reverse transcription‑quantitative polymerase chain reaction, and protein levels and localization were analyzed by western blotting and immunohistochemistry, respectively. Plasma bile acid levels were significantly higher in the LPS + PH group than in the PH group. Ribonucleotide reductase regulatory subunit M2 and proliferating cell nuclear antigen peaked at 24 and 72 h in the PH group and LPS + PH group, respectively, indicating a delay in cell proliferation in the latter group. The sodium‑dependent taurocholate cotransporting polypeptide and organic‑anion‑transporting polypeptide 1a1 and 1a2 were reduced in the PH group at 24 h, and were not further decreased in the LPS + PH group. Chemokine ligand 9 (Cxcl9), a chemokine involved in M2 macrophage polarization, increased after 24 h in the LPS and the LPS + PH groups. The number and shape of Cxcl9‑positive cells were similar to CD163‑positive cells, suggesting that such cells produced the chemokine. Hematopoietic prostaglandin D2 synthase (Ptgds2) was only detected in hepatocytes of the LPS + PH group exhibiting a delay in cell proliferation. Thus, Kupffer cells activated with LPS were suggested to be responsible for a delay in hepatocyte proliferation after PH.
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Affiliation(s)
- Yusuke Wakasa
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan
| | - Norihisa Kimura
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan
| | - Toshiyuki Yamada
- Department of Biochemistry and Genome Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan
| | - Takeshi Shimizu
- Department of Biochemistry and Genome Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan
| | - Kenichi Hakamada
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan
| | - Shigeki Tsuchida
- Department of Biochemistry and Genome Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori 036‑8562, Japan
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Chew V, Lee YH, Pan L, Nasir NJM, Lim CJ, Chua C, Lai L, Hazirah SN, Lim TKH, Goh BKP, Chung A, Lo RHG, Ng D, Filarca RLF, Albani S, Chow PKH. Immune activation underlies a sustained clinical response to Yttrium-90 radioembolisation in hepatocellular carcinoma. Gut 2019; 68:335-346. [PMID: 29440463 PMCID: PMC6352403 DOI: 10.1136/gutjnl-2017-315485] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/29/2017] [Accepted: 12/15/2017] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Yttrium-90 (Y90)-radioembolisation (RE) significantly regresses locally advanced hepatocellular carcinoma and delays disease progression. The current study is designed to deeply interrogate the immunological impact of Y90-RE, which elicits a sustained therapeutic response. DESIGN Time-of-flight mass cytometry and next-generation sequencing (NGS) were used to analyse the immune landscapes of tumour-infiltrating leucocytes (TILs), tumour tissues and peripheral blood mononuclear cells (PBMCs) at different time points before and after Y90-RE. RESULTS TILs isolated after Y90-RE exhibited signs of local immune activation: higher expression of granzyme B (GB) and infiltration of CD8+ T cells, CD56+ NK cells and CD8+ CD56+ NKT cells. NGS confirmed the upregulation of genes involved in innate and adaptive immune activation in Y90-RE-treated tumours. Chemotactic pathways involving CCL5 and CXCL16 correlated with the recruitment of activated GB+CD8+ T cells to the Y90-RE-treated tumours. When comparing PBMCs before and after Y90-RE, we observed an increase in tumour necrosis factor-α on both the CD8+ and CD4+ T cells as well as an increase in percentage of antigen-presenting cells after Y90-RE, implying a systemic immune activation. Interestingly, a high percentage of PD-1+/Tim-3+CD8+ T cells coexpressing the homing receptors CCR5 and CXCR6 denoted Y90-RE responders. A prediction model was also built to identify sustained responders to Y90-RE based on the immune profiles from pretreatment PBMCs. CONCLUSION High-dimensional analysis of tumour and systemic immune landscapes identified local and systemic immune activation that corresponded to the sustained response to Y90-RE. Potential biomarkers associated with a positive clinical response were identified and a prediction model was built to identify sustained responders prior to treatment.
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Affiliation(s)
- Valerie Chew
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Yun Hua Lee
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Lu Pan
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Nurul J M Nasir
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Chun Jye Lim
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Camillus Chua
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Liyun Lai
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Sharifah Nur Hazirah
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Tony Kiat Hon Lim
- Department of Pathology, Singapore General Hospital, Singapore,Duke-NUS Medical School, Singapore
| | - Brian K P Goh
- Duke-NUS Medical School, Singapore,National Cancer Centre, Singapore,Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Alexander Chung
- Duke-NUS Medical School, Singapore,National Cancer Centre, Singapore,Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Richard H G Lo
- Duke-NUS Medical School, Singapore,National Cancer Centre, Singapore,Department of Diagnostic Radiology, Singapore General Hospital, Singapore
| | - David Ng
- Duke-NUS Medical School, Singapore,National Cancer Centre, Singapore,Department of Nuclear Medicine and Molecular Imaging, Singapore General Hospital, Singapore
| | - Rene L F Filarca
- Duke-NUS Medical School, Singapore,National Cancer Centre, Singapore,Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Salvatore Albani
- Translational Immunology Institute (TII), SingHealth-DukeNUS Academic Medical Centre, Singapore.
| | - Pierce K H Chow
- Duke-NUS Medical School, Singapore,National Cancer Centre, Singapore,Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore
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