Liver damage promotes pro-inflammatory T-cell responses against apolipoprotein B-100
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Liver damage promotes pro-inflammatory T-cell responses against apolipoprotein B-100. / Plochg, Bastian F J; Englert, Hanna; Rangaswamy, Chandini; Konrath, Sandra; Malle, Mandy; Lampalzer, Sibylle; Beisel, Claudia; Wollin, Salma; Frye, Maike; Aberle, Jens; Kluwe, Johannes; Renné, Thomas; Mailer, Reiner K.
In: J INTERN MED, Vol. 291, No. 5, 05.2022, p. 648-664.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Liver damage promotes pro-inflammatory T-cell responses against apolipoprotein B-100
AU - Plochg, Bastian F J
AU - Englert, Hanna
AU - Rangaswamy, Chandini
AU - Konrath, Sandra
AU - Malle, Mandy
AU - Lampalzer, Sibylle
AU - Beisel, Claudia
AU - Wollin, Salma
AU - Frye, Maike
AU - Aberle, Jens
AU - Kluwe, Johannes
AU - Renné, Thomas
AU - Mailer, Reiner K
N1 - This article is protected by copyright. All rights reserved.
PY - 2022/5
Y1 - 2022/5
N2 - OBJECTIVES: Liver-derived apolipoprotein B-100 (ApoB100) is an autoantigen that is recognized by atherogenic CD4+ T cells in cardiovascular disease (CVD). CVD is a major mortality risk for patients with chronic inflammatory liver diseases. However, the impact of liver damage for ApoB100-specific T-cell responses is unknown.METHODS: We identified ApoB100-specific T cells in blood from healthy controls, nonalcoholic fatty liver disease (NAFLD) patients, and CVD patients by activation-induced marker expression and analyzed their differentiation pattern in correlation to the lipid profile and liver damage parameters in a cross-sectional study. To assess the induction of extrahepatic ApoB100-specific T cells upon transient liver damage in vivo, we performed hydrodynamic tail vein injections with diphtheria toxin A (DTA)-encoding plasmid in human ApoB100-transgenic mice.RESULTS: Utilizing immunodominant ApoB100-derived peptides, we found increased ApoB100-specific T-cell populations in NAFLD and CVD patients compared to healthy controls. In a peptide-specific manner, ApoB100 reactivity in healthy controls was accompanied by expression of the regulatory T (Treg)-cell transcription factor FOXP3. In contrast, FOXP3 expression decreased, whereas expression of pro-inflammatory cytokine interleukin (IL)-17A increased in ApoB100-specific T cells from NAFLD and CVD patients. Dyslipidemia and liver damage parameters in blood correlated with reduced FOXP3 expression and elevated IL-17A production in ApoB100-specific T-cell populations, respectively. Moreover, DTA-mediated transient liver damage in human ApoB100-transgenic mice accumulated IL-17a-expressing ApoB100-specific T cells in the periphery.CONCLUSION: Our results show that liver damage promotes pro-inflammatory ApoB100-specific T-cell populations, thereby providing a cellular mechanism for the increased CVD risk in liver disease patients.
AB - OBJECTIVES: Liver-derived apolipoprotein B-100 (ApoB100) is an autoantigen that is recognized by atherogenic CD4+ T cells in cardiovascular disease (CVD). CVD is a major mortality risk for patients with chronic inflammatory liver diseases. However, the impact of liver damage for ApoB100-specific T-cell responses is unknown.METHODS: We identified ApoB100-specific T cells in blood from healthy controls, nonalcoholic fatty liver disease (NAFLD) patients, and CVD patients by activation-induced marker expression and analyzed their differentiation pattern in correlation to the lipid profile and liver damage parameters in a cross-sectional study. To assess the induction of extrahepatic ApoB100-specific T cells upon transient liver damage in vivo, we performed hydrodynamic tail vein injections with diphtheria toxin A (DTA)-encoding plasmid in human ApoB100-transgenic mice.RESULTS: Utilizing immunodominant ApoB100-derived peptides, we found increased ApoB100-specific T-cell populations in NAFLD and CVD patients compared to healthy controls. In a peptide-specific manner, ApoB100 reactivity in healthy controls was accompanied by expression of the regulatory T (Treg)-cell transcription factor FOXP3. In contrast, FOXP3 expression decreased, whereas expression of pro-inflammatory cytokine interleukin (IL)-17A increased in ApoB100-specific T cells from NAFLD and CVD patients. Dyslipidemia and liver damage parameters in blood correlated with reduced FOXP3 expression and elevated IL-17A production in ApoB100-specific T-cell populations, respectively. Moreover, DTA-mediated transient liver damage in human ApoB100-transgenic mice accumulated IL-17a-expressing ApoB100-specific T cells in the periphery.CONCLUSION: Our results show that liver damage promotes pro-inflammatory ApoB100-specific T-cell populations, thereby providing a cellular mechanism for the increased CVD risk in liver disease patients.
UR - https://pubmed.ncbi.nlm.nih.gov/34914849/
U2 - 10.1111/joim.13434
DO - 10.1111/joim.13434
M3 - SCORING: Journal article
C2 - 34914849
VL - 291
SP - 648
EP - 664
JO - J INTERN MED
JF - J INTERN MED
SN - 0954-6820
IS - 5
ER -