Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice

Rocío López-Posadas; Petra Fastancz; Luz Del Carmen Martínez-Sánchez; Julia Panteleev-Ivlev; Veronika Thonn; Tatyana Kisseleva; Lukas S Becker; Anja Schulz-Kuhnt; Sebastian Zundler; Stefan Wirtz; Raja Atreya; Birgitta Carlé; Oliver Friedrich; Sebastian Schürmann; Maximilian J Waldner; Clemens Neufert; Cord H Brakebusch; Martin O Bergö; Markus F Neurath; Imke Atreya

doi:10.1053/j.gastro.2019.07.007

Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice

Rocío López-Posadas, Petra Fastancz, Luz Del Carmen Martínez-Sánchez, Julia Panteleev-Ivlev, Veronika Thonn, Tatyana Kisseleva, Lukas S Becker, Anja Schulz-Kuhnt, Sebastian Zundler, Stefan Wirtz, Raja Atreya, Birgitta Carlé, Oliver Friedrich, Sebastian Schürmann, Maximilian J Waldner, Clemens Neufert, Cord H Brakebusch, Martin O Bergö, Markus F Neurath, Imke Atreya

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Abstract

Background & Aims: It is not clear how regulation of T-cell function is altered during development of inflammatory bowel diseases (IBD). We studied the mechanisms by which geranylgeranyltransferase-mediated prenylation controls T-cell localization to the intestine and chronic inflammation. Methods: We generated mice with T-cell–specific disruption of the geranylgeranyltransferase type I, beta subunit gene (Pggt1b), called Pggt1b^ΔCD4 mice, or the ras homolog family member A gene (Rhoa), called Rhoa^ΔCD4 mice. We also studied mice with knockout of CDC42 or RAC1 and wild-type mice (controls). Intestinal tissues were analyzed by histology, multiphoton and confocal microscopy, and real-time polymerase chain reaction. Activation of CDC42, RAC1, and RHOA were measured with G-LISA, cell fractionation, and immunoblots. T cells and lamina propria mononuclear cells from mice were analyzed by flow cytometry or transferred to Rag1^–/– mice. Mice were given injections of antibodies against integrin alpha4beta7 or gavaged with the RORC antagonist GSK805. We obtained peripheral blood and intestinal tissue samples from patients with and without IBD and analyzed them by flow cytometry. Results: Pggt1b^ΔCD4 mice developed spontaneous colitis, characterized by thickening of the intestinal wall, edema, fibrosis, accumulation of T cells in the colon, and increased expression of inflammatory cytokines. Compared with control CD4+ T cells, PGGT1B-deficient CD4+ T cells expressed significantly higher levels of integrin alpha4beta7, which regulates their localization to the intestine. Inflammation induced by transfer of PGGT1B-deficient CD4+ T cells to Rag1^–/– mice was blocked by injection of an antibody against integrin alpha4beta7. Lamina propria of Pggt1b^ΔCD4 mice had increased numbers of CD4+ T cells that expressed RORC and higher levels of cytokines produced by T-helper 17 cells (granulocyte-macrophage colony-stimulating factor, interleukin [IL]17A, IL17F, IL22, and tumor necrosis factor [TNF]). The RORC inverse agonist GSK805, but not antibodies against IL17A or IL17F, prevented colitis in Pggt1b^ΔCD4 mice. PGGT1B-deficient CD4+ T cells had decreased activation of RHOA. RhoA^ΔCD4 mice had a similar phenotype to Pggt1b^ΔCD4 mice, including development of colitis, increased numbers of CD4+ T cells in colon, increased expression of integrin alpha4beta7 by CD4+ T cells, and increased levels of IL17A and other inflammatory cytokines in lamina propria. T cells isolated from intestinal tissues from patients with IBD had significantly lower levels of PGGT1B than tissues from individuals without IBD. Conclusion: Loss of PGGT1B from T cells in mice impairs RHOA function, increasing CD4+ T-cell expression of integrin alpha4beta7 and localization to colon, resulting in increased expression of inflammatory cytokines and colitis. T cells isolated from gut tissues from patients with IBD have lower levels of PGGT1B than tissues from patients without IBD.

Originalsprog	Engelsk
Tidsskrift	Gastroenterology
Vol/bind	157
Udgave nummer	5
Sider (fra-til)	1293-1309
Antal sider	17
ISSN	0016-5085
DOI	https://doi.org/10.1053/j.gastro.2019.07.007
Status	Udgivet - nov. 2019

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10.1053/j.gastro.2019.07.007Licens: CC BY-NC-ND

Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in MiceForlagets udgivne version, 6,47 MBLicens: CC BY-NC-ND

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López-Posadas, R., Fastancz, P., Martínez-Sánchez, L. D. C., Panteleev-Ivlev, J., Thonn, V., Kisseleva, T., Becker, L. S., Schulz-Kuhnt, A., Zundler, S., Wirtz, S., Atreya, R., Carlé, B., Friedrich, O., Schürmann, S., Waldner, M. J., Neufert, C., Brakebusch, C. H., Bergö, M. O., Neurath, M. F., & Atreya, I. (2019). Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice. Gastroenterology, 157(5), 1293-1309. https://doi.org/10.1053/j.gastro.2019.07.007

López-Posadas, R, Fastancz, P, Martínez-Sánchez, LDC, Panteleev-Ivlev, J, Thonn, V, Kisseleva, T, Becker, LS, Schulz-Kuhnt, A, Zundler, S, Wirtz, S, Atreya, R, Carlé, B, Friedrich, O, Schürmann, S, Waldner, MJ, Neufert, C, Brakebusch, CH, Bergö, MO, Neurath, MF & Atreya, I 2019, 'Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice', Gastroenterology, bind 157, nr. 5, s. 1293-1309. https://doi.org/10.1053/j.gastro.2019.07.007

@article{35a67d673f904c5ab979a40c7d0a25b7,

title = "Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice",

abstract = "Background & Aims: It is not clear how regulation of T-cell function is altered during development of inflammatory bowel diseases (IBD). We studied the mechanisms by which geranylgeranyltransferase-mediated prenylation controls T-cell localization to the intestine and chronic inflammation. Methods: We generated mice with T-cell–specific disruption of the geranylgeranyltransferase type I, beta subunit gene (Pggt1b), called Pggt1bΔCD4 mice, or the ras homolog family member A gene (Rhoa), called RhoaΔCD4 mice. We also studied mice with knockout of CDC42 or RAC1 and wild-type mice (controls). Intestinal tissues were analyzed by histology, multiphoton and confocal microscopy, and real-time polymerase chain reaction. Activation of CDC42, RAC1, and RHOA were measured with G-LISA, cell fractionation, and immunoblots. T cells and lamina propria mononuclear cells from mice were analyzed by flow cytometry or transferred to Rag1–/– mice. Mice were given injections of antibodies against integrin alpha4beta7 or gavaged with the RORC antagonist GSK805. We obtained peripheral blood and intestinal tissue samples from patients with and without IBD and analyzed them by flow cytometry. Results: Pggt1bΔCD4 mice developed spontaneous colitis, characterized by thickening of the intestinal wall, edema, fibrosis, accumulation of T cells in the colon, and increased expression of inflammatory cytokines. Compared with control CD4+ T cells, PGGT1B-deficient CD4+ T cells expressed significantly higher levels of integrin alpha4beta7, which regulates their localization to the intestine. Inflammation induced by transfer of PGGT1B-deficient CD4+ T cells to Rag1–/– mice was blocked by injection of an antibody against integrin alpha4beta7. Lamina propria of Pggt1bΔCD4 mice had increased numbers of CD4+ T cells that expressed RORC and higher levels of cytokines produced by T-helper 17 cells (granulocyte-macrophage colony-stimulating factor, interleukin [IL]17A, IL17F, IL22, and tumor necrosis factor [TNF]). The RORC inverse agonist GSK805, but not antibodies against IL17A or IL17F, prevented colitis in Pggt1bΔCD4 mice. PGGT1B-deficient CD4+ T cells had decreased activation of RHOA. RhoAΔCD4 mice had a similar phenotype to Pggt1bΔCD4 mice, including development of colitis, increased numbers of CD4+ T cells in colon, increased expression of integrin alpha4beta7 by CD4+ T cells, and increased levels of IL17A and other inflammatory cytokines in lamina propria. T cells isolated from intestinal tissues from patients with IBD had significantly lower levels of PGGT1B than tissues from individuals without IBD. Conclusion: Loss of PGGT1B from T cells in mice impairs RHOA function, increasing CD4+ T-cell expression of integrin alpha4beta7 and localization to colon, resulting in increased expression of inflammatory cytokines and colitis. T cells isolated from gut tissues from patients with IBD have lower levels of PGGT1B than tissues from patients without IBD.",

author = "Roc{\'i}o L{\'o}pez-Posadas and Petra Fastancz and Mart{\'i}nez-S{\'a}nchez, {Luz Del Carmen} and Julia Panteleev-Ivlev and Veronika Thonn and Tatyana Kisseleva and Becker, {Lukas S} and Anja Schulz-Kuhnt and Sebastian Zundler and Stefan Wirtz and Raja Atreya and Birgitta Carl{\'e} and Oliver Friedrich and Sebastian Sch{\"u}rmann and Waldner, {Maximilian J} and Clemens Neufert and Brakebusch, {Cord H} and Berg{\"o}, {Martin O} and Neurath, {Markus F} and Imke Atreya",

year = "2019",

month = nov,

doi = "10.1053/j.gastro.2019.07.007",

language = "English",

volume = "157",

pages = "1293--1309",

journal = "Gastroenterology",

issn = "0016-5085",

publisher = "Elsevier",

number = "5",

}

TY - JOUR

T1 - Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice

AU - López-Posadas, Rocío

AU - Fastancz, Petra

AU - Martínez-Sánchez, Luz Del Carmen

AU - Panteleev-Ivlev, Julia

AU - Thonn, Veronika

AU - Kisseleva, Tatyana

AU - Becker, Lukas S

AU - Schulz-Kuhnt, Anja

AU - Zundler, Sebastian

AU - Wirtz, Stefan

AU - Atreya, Raja

AU - Carlé, Birgitta

AU - Friedrich, Oliver

AU - Schürmann, Sebastian

AU - Waldner, Maximilian J

AU - Neufert, Clemens

AU - Brakebusch, Cord H

AU - Bergö, Martin O

AU - Neurath, Markus F

AU - Atreya, Imke

PY - 2019/11

Y1 - 2019/11

N2 - Background & Aims: It is not clear how regulation of T-cell function is altered during development of inflammatory bowel diseases (IBD). We studied the mechanisms by which geranylgeranyltransferase-mediated prenylation controls T-cell localization to the intestine and chronic inflammation. Methods: We generated mice with T-cell–specific disruption of the geranylgeranyltransferase type I, beta subunit gene (Pggt1b), called Pggt1bΔCD4 mice, or the ras homolog family member A gene (Rhoa), called RhoaΔCD4 mice. We also studied mice with knockout of CDC42 or RAC1 and wild-type mice (controls). Intestinal tissues were analyzed by histology, multiphoton and confocal microscopy, and real-time polymerase chain reaction. Activation of CDC42, RAC1, and RHOA were measured with G-LISA, cell fractionation, and immunoblots. T cells and lamina propria mononuclear cells from mice were analyzed by flow cytometry or transferred to Rag1–/– mice. Mice were given injections of antibodies against integrin alpha4beta7 or gavaged with the RORC antagonist GSK805. We obtained peripheral blood and intestinal tissue samples from patients with and without IBD and analyzed them by flow cytometry. Results: Pggt1bΔCD4 mice developed spontaneous colitis, characterized by thickening of the intestinal wall, edema, fibrosis, accumulation of T cells in the colon, and increased expression of inflammatory cytokines. Compared with control CD4+ T cells, PGGT1B-deficient CD4+ T cells expressed significantly higher levels of integrin alpha4beta7, which regulates their localization to the intestine. Inflammation induced by transfer of PGGT1B-deficient CD4+ T cells to Rag1–/– mice was blocked by injection of an antibody against integrin alpha4beta7. Lamina propria of Pggt1bΔCD4 mice had increased numbers of CD4+ T cells that expressed RORC and higher levels of cytokines produced by T-helper 17 cells (granulocyte-macrophage colony-stimulating factor, interleukin [IL]17A, IL17F, IL22, and tumor necrosis factor [TNF]). The RORC inverse agonist GSK805, but not antibodies against IL17A or IL17F, prevented colitis in Pggt1bΔCD4 mice. PGGT1B-deficient CD4+ T cells had decreased activation of RHOA. RhoAΔCD4 mice had a similar phenotype to Pggt1bΔCD4 mice, including development of colitis, increased numbers of CD4+ T cells in colon, increased expression of integrin alpha4beta7 by CD4+ T cells, and increased levels of IL17A and other inflammatory cytokines in lamina propria. T cells isolated from intestinal tissues from patients with IBD had significantly lower levels of PGGT1B than tissues from individuals without IBD. Conclusion: Loss of PGGT1B from T cells in mice impairs RHOA function, increasing CD4+ T-cell expression of integrin alpha4beta7 and localization to colon, resulting in increased expression of inflammatory cytokines and colitis. T cells isolated from gut tissues from patients with IBD have lower levels of PGGT1B than tissues from patients without IBD.

AB - Background & Aims: It is not clear how regulation of T-cell function is altered during development of inflammatory bowel diseases (IBD). We studied the mechanisms by which geranylgeranyltransferase-mediated prenylation controls T-cell localization to the intestine and chronic inflammation. Methods: We generated mice with T-cell–specific disruption of the geranylgeranyltransferase type I, beta subunit gene (Pggt1b), called Pggt1bΔCD4 mice, or the ras homolog family member A gene (Rhoa), called RhoaΔCD4 mice. We also studied mice with knockout of CDC42 or RAC1 and wild-type mice (controls). Intestinal tissues were analyzed by histology, multiphoton and confocal microscopy, and real-time polymerase chain reaction. Activation of CDC42, RAC1, and RHOA were measured with G-LISA, cell fractionation, and immunoblots. T cells and lamina propria mononuclear cells from mice were analyzed by flow cytometry or transferred to Rag1–/– mice. Mice were given injections of antibodies against integrin alpha4beta7 or gavaged with the RORC antagonist GSK805. We obtained peripheral blood and intestinal tissue samples from patients with and without IBD and analyzed them by flow cytometry. Results: Pggt1bΔCD4 mice developed spontaneous colitis, characterized by thickening of the intestinal wall, edema, fibrosis, accumulation of T cells in the colon, and increased expression of inflammatory cytokines. Compared with control CD4+ T cells, PGGT1B-deficient CD4+ T cells expressed significantly higher levels of integrin alpha4beta7, which regulates their localization to the intestine. Inflammation induced by transfer of PGGT1B-deficient CD4+ T cells to Rag1–/– mice was blocked by injection of an antibody against integrin alpha4beta7. Lamina propria of Pggt1bΔCD4 mice had increased numbers of CD4+ T cells that expressed RORC and higher levels of cytokines produced by T-helper 17 cells (granulocyte-macrophage colony-stimulating factor, interleukin [IL]17A, IL17F, IL22, and tumor necrosis factor [TNF]). The RORC inverse agonist GSK805, but not antibodies against IL17A or IL17F, prevented colitis in Pggt1bΔCD4 mice. PGGT1B-deficient CD4+ T cells had decreased activation of RHOA. RhoAΔCD4 mice had a similar phenotype to Pggt1bΔCD4 mice, including development of colitis, increased numbers of CD4+ T cells in colon, increased expression of integrin alpha4beta7 by CD4+ T cells, and increased levels of IL17A and other inflammatory cytokines in lamina propria. T cells isolated from intestinal tissues from patients with IBD had significantly lower levels of PGGT1B than tissues from individuals without IBD. Conclusion: Loss of PGGT1B from T cells in mice impairs RHOA function, increasing CD4+ T-cell expression of integrin alpha4beta7 and localization to colon, resulting in increased expression of inflammatory cytokines and colitis. T cells isolated from gut tissues from patients with IBD have lower levels of PGGT1B than tissues from patients without IBD.

U2 - 10.1053/j.gastro.2019.07.007

DO - 10.1053/j.gastro.2019.07.007

M3 - Journal article

C2 - 31302143

SN - 0016-5085

VL - 157

SP - 1293

EP - 1309

JO - Gastroenterology

JF - Gastroenterology

IS - 5

ER -

Inhibiting PGGT1B Disrupts Function of RHOA, Resulting in T-cell Expression of Integrin α4β7 and Development of Colitis in Mice

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