Hepatocyte Transplantation-Induced Liver Inflammation Is Driven by Cytokines-Chemokines Associated With Neutrophils and Kupffer Cells

Natan Krohn, Sorabh Kapoor, Yuta Enami, Antonia Follenzi, Sriram Bandi, Brigid Joseph, Sanjeev Gupta

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Background & Aims: Hepatocyte transplantation-induced liver inflammation impairs cell engraftment. We defined whether proinflammatory cytokines and chemokines played roles in regulation of hepatocyte engraftment in the liver. Methods: We performed studies over up to 3 weeks in rat hepatocyte transplantation systems. Expression of 84 cytokine-chemokine genes was studied by quantitative real-time polymerase chain reactions. Expression of selected up-regulated genes was verified by immunohistochemistry. Hepatic recruitment of neutrophils was demonstrated by myeloperoxidase activity assays, and Kupffer cell activation was established by carbon phagocytosis assays. The role of neutrophils and Kupffer cells in regulating expression of cytokine-chemokine genes as well as cell engraftment was determined by cell depletion studies. Results: Within 6 hours after syngeneic cell transplantation, expression of 25 cytokine-chemokine genes increased by 2- to 123-fold, P < .05. These genes were largely associated with activated neutrophils and macrophages, including chemokine ligands, CXCL1, CXCL2, CCL3, CCL4; chemokine receptors, CXCR1 or CXCR2, CCR1, CCR2; and regulatory cytokines tumor necrosis factor α and interleukin-6. Inflammatory cells in the liver immunostained for CCR1, CCR2, CXCR1, and CXCR2, which indicated that up-regulated messenger RNA was appropriately translated. When neutrophils and Kupffer cells were depleted with neutrophil antiserum and gadolinium chloride, respectively, before transplanting cells, cell transplantation-induced cytokine-chemokine responses were attenuated. Virtually all abnormalities subsided in animals treated with neutrophil antiserum plus gadolinium chloride. Moreover, depletion of neutrophils or Kupffer cells improved engraftment of transplanted cells. Conclusions: Cell transplantation-induced liver inflammation involves proinflammatory cytokine-chemokine systems capable of modulation by neutrophils and Kupffer cells. This offers new directions for optimizing cell therapy strategies.

Original languageEnglish (US)
Pages (from-to)1806-1817
Number of pages12
JournalGastroenterology
Volume136
Issue number5
DOIs
StatePublished - May 2009

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Kupffer Cells
Chemokines
Liver Transplantation
Hepatocytes
Neutrophils
Cytokines
Inflammation
Cell Transplantation
Genes
Liver
Immune Sera
Chemokine CXCL1
Isogeneic Transplantation
Neutrophil Infiltration
Chemokine Receptors
Cell- and Tissue-Based Therapy
Phagocytosis
Peroxidase
Real-Time Polymerase Chain Reaction
Interleukin-6

ASJC Scopus subject areas

  • Gastroenterology

Cite this

Hepatocyte Transplantation-Induced Liver Inflammation Is Driven by Cytokines-Chemokines Associated With Neutrophils and Kupffer Cells. / Krohn, Natan; Kapoor, Sorabh; Enami, Yuta; Follenzi, Antonia; Bandi, Sriram; Joseph, Brigid; Gupta, Sanjeev.

In: Gastroenterology, Vol. 136, No. 5, 05.2009, p. 1806-1817.

Research output: Contribution to journalArticle

Krohn, Natan ; Kapoor, Sorabh ; Enami, Yuta ; Follenzi, Antonia ; Bandi, Sriram ; Joseph, Brigid ; Gupta, Sanjeev. / Hepatocyte Transplantation-Induced Liver Inflammation Is Driven by Cytokines-Chemokines Associated With Neutrophils and Kupffer Cells. In: Gastroenterology. 2009 ; Vol. 136, No. 5. pp. 1806-1817.
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AU - Enami, Yuta

AU - Follenzi, Antonia

AU - Bandi, Sriram

AU - Joseph, Brigid

AU - Gupta, Sanjeev

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AB - Background & Aims: Hepatocyte transplantation-induced liver inflammation impairs cell engraftment. We defined whether proinflammatory cytokines and chemokines played roles in regulation of hepatocyte engraftment in the liver. Methods: We performed studies over up to 3 weeks in rat hepatocyte transplantation systems. Expression of 84 cytokine-chemokine genes was studied by quantitative real-time polymerase chain reactions. Expression of selected up-regulated genes was verified by immunohistochemistry. Hepatic recruitment of neutrophils was demonstrated by myeloperoxidase activity assays, and Kupffer cell activation was established by carbon phagocytosis assays. The role of neutrophils and Kupffer cells in regulating expression of cytokine-chemokine genes as well as cell engraftment was determined by cell depletion studies. Results: Within 6 hours after syngeneic cell transplantation, expression of 25 cytokine-chemokine genes increased by 2- to 123-fold, P < .05. These genes were largely associated with activated neutrophils and macrophages, including chemokine ligands, CXCL1, CXCL2, CCL3, CCL4; chemokine receptors, CXCR1 or CXCR2, CCR1, CCR2; and regulatory cytokines tumor necrosis factor α and interleukin-6. Inflammatory cells in the liver immunostained for CCR1, CCR2, CXCR1, and CXCR2, which indicated that up-regulated messenger RNA was appropriately translated. When neutrophils and Kupffer cells were depleted with neutrophil antiserum and gadolinium chloride, respectively, before transplanting cells, cell transplantation-induced cytokine-chemokine responses were attenuated. Virtually all abnormalities subsided in animals treated with neutrophil antiserum plus gadolinium chloride. Moreover, depletion of neutrophils or Kupffer cells improved engraftment of transplanted cells. Conclusions: Cell transplantation-induced liver inflammation involves proinflammatory cytokine-chemokine systems capable of modulation by neutrophils and Kupffer cells. This offers new directions for optimizing cell therapy strategies.

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