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Figure 2. Positive selection of J15 TCR transgenic T cells specific for H60. (A) CD4 by CD8 profiles (left) of thymocytes and numbers (right) of each thymic.
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Volume 29, Issue 4, Pages 523-537 (October 2008) Differential Role of the Transcription Factor NF-κB in Selection and Survival of CD4+ and CD8+ Thymocytes  Eijiro Jimi, Ian Strickland, Reinhard E. Voll, Meixiao Long, Sankar Ghosh  Immunity  Volume 29, Issue 4, Pages 523-537 (October 2008) DOI: 10.1016/j.immuni.2008.08.010 Copyright © 2008 Elsevier Inc. Terms and Conditions

Figure 1 Generation of Transgenic Mice Expressing a Constitutively Active IKKβ, Tg-Ikbkb-CA, in Thymocytes (A) Protein expression level (upper panel) and kinase activity (lower panel) of the Ikbkb-CA transgene in thymus in Ikbkb-CA transgenic line #11×#17. (B) EMSA of NF-κB and Oct-1 DNA-binding activity in thymocytes from Ikbkb-CA transgenic line #11×#17 (left panel). Supershift analysis of thymic nuclear extracts from Tg-Ikbkb-CA+/+ mice (right panel). (C) Expression levels of NF-κB and IκB family members in WT and Tg-Ikbkb-CAIkbkb-CA thymocytes were examined by immunoblotting (left panel). Total RNA was isolated from thymoctes treated with or without PMA for 4 hr from wild-type (WT) and Tg-Ikbkb-CA+/+ mice and then analyzed the expression of IκBα mRNA by RNA blot (right panel). (D) Single-cell suspensions of thymocytes from WT, heterozygous, and homozygous mice were stained with anti-CD8-PE and anti-CD4-Quantum red (QR) antibodies and analyzed by flow cytometry (upper panel). Single-cell suspensions of splenocytes from WT, heterozygous, and homozygous mice were stained with TCRαβ-FITC and B220-PE antibodies and analyzed by flow cytometry. (E) Absolute numbers of DP, CD4SP, and CD8SP thymocytes from WT, heterozygous, and homozygous mice (upper panels). Absolute numbers of CD8SP cells in TCRhi and TCRlo thymocytes from WT, heterozygous, and homozygous mice are shown in the lower panel. (F and G) Histograms show expression of TCRβ in CD4SP, CD8SP, or DP thymocytes (F) and CD5 and CD69 in DP thymocytes (G) in Tg-Ikbkb-CA. The thin lines represent WT and thick lines represent Tg-Ikbkb-CA thymocytes, respectively. Immunity 2008 29, 523-537DOI: (10.1016/j.immuni.2008.08.010) Copyright © 2008 Elsevier Inc. Terms and Conditions

Figure 2 Neither Bcl2 TG Mice nor Faslpr/lpr Mice Rescue T Lymphocyte Differentiation in Thymus and in Spleen of Tg-Ikbkb-CA Mice Composition of thymocyte and splenocyte subsets was analyzed in Tg-Ikbkb-CA, Tg-Eμ-Bcl2, and Tg-Ikbkb-CA×Bcl2 mice (A) and in Tg-Ikbkb-CA, Tg-Faslpr/lpr, and Tg-Ikbkb-CA×Tg-Faslpr/lpr mice (B) by flow cytometry. Single cells from thymocytes from these mice were stained with anti-TCRβ-FITC or anti-Fas-FITC, anti-CD8-PE, and anti-CD4-QR and analyzed by flow cytometry. (C) Absolute numbers of CD4SP thymocytes from WT, Tg-Ikbkb-CA, Tg-Faslpr/lpr, and Tg-Ikbkb-CA×Faslpr/lpr mice. Immunity 2008 29, 523-537DOI: (10.1016/j.immuni.2008.08.010) Copyright © 2008 Elsevier Inc. Terms and Conditions

Figure 3 NF-κB Activity during Positive and Negative Selection (A) Single-cell suspension of total thymocytes was stained with anti-TCRβ-FITC, anti-CD69-PE, anti-CD8-QR, and anti-CD4-APC. Nuclear extracts of CD69−DP and CD69+DP cells were analyzed by EMSA for NF-κB and Oct-1. (B) Luciferase activity of thymocyte population during selection. Total cell extracts were prepared from thymocyte populations, and then luciferase activity was measured. Immunity 2008 29, 523-537DOI: (10.1016/j.immuni.2008.08.010) Copyright © 2008 Elsevier Inc. Terms and Conditions

Figure 4 Impaired Thymocyte-Positive Selection in Tg-Ikbkb-CA Mice, MHC Class I-Restricted TCR Transgenic Mice (A) Total thymocyte number from 6-week-old female HY×WT and HY×Tg-Ikbkb-CA mice (upper panel). Histograms show Annexin V-FITC staining in total thymocytes from HY×WT and HY×Tg-Ikbkb-CA mice (lower panel). (B) Absolute numbers of DP, CD4SP, CD8SP, and DN thymocytes from HY×WT and HY×Tg-Ikbkb-CA mice. (C) Histograms show the expression of HY TCR (T3.70) in total thymocytes (upper panel). Analysis of CD4+ and CD8+ population gating on HY TCRhi cells in female HY×WT and HY×Tg-Ikbkb-CA mice (lower panel). Thymocytes were stained with anti-HY TCR (T3.70)-FITC, anti-CD8-PE, and anti-CD4-QR antibodies. (D) Histograms show the expression of developmental markers, CD5, CD69, and HSA, on both DP and CD8SP in gating on HY TCRhi cells. The thin black lines represent WT and thick blue lines represent Tg-Ikbkb-CA thymocytes, respectively. (E) Analysis of CD4+ and CD8+ population in male HY×WT and HY×Tg-Ikbkb-CA mice. Thymocytes and splenocytes were stained with HY TCR (T3.70)-FITC, CD8-PE, and CD4-QR antibodies. (F) Comparison of CD5 expression on thymocyte from HY and OT-I TCR transgenic mice. Histogram represents CD5 staining in gating on transgenic TCRhi CD8SP cells. The thin line represents HY TCR transgenic thymocytes and the thick blue line represents OT-I TCR transgenic thymocytes, respectively. (G) Histogram shows the expression of OT-I TCR (Vα2) in total thymocytes (upper panel). The thin line represents WT and the thick blue line represents Tg-Ikbkb-CA thymocytes, respectively. Analysis of CD4+ and CD8+ population in gating on OT-I TCRhi cells in OT-I×WT and OT-I×Tg-Ikbkb-CA mice (lower panel). Thymocytes were stained with Vα2-FITC, CD8-PE, and CD4-QR antibodies. Immunity 2008 29, 523-537DOI: (10.1016/j.immuni.2008.08.010) Copyright © 2008 Elsevier Inc. Terms and Conditions

Figure 5 Inhibition of NF-κB Alters Both Positive and Negative Selection in MHC Class I-Restricted TCR Transgenic Mice (A) Histograms show the expression of HY TCR (T3.70) in total thymocytes (upper panel). Analysis of CD4+ and CD8+ population in gating on HY TCRhi cells in female HY×WT and HY×Tg-Nfkbia-SR mice (lower panel). Thymocytes were stained with HY TCR (T3.70)-FITC, CD8-PE, and CD4-QR antibodies. (B) Histograms show the expression of developmental markers, CD5, CD69, and HSA, on both DP and CD8SP in gating on HY TCRhi cells. The thin lines represent WT and thick lines represent Tg-Nfkbia-SR thymocytes, respectively. (C) Analysis of CD4 and CD8 population in male HY×WT and HY×Tg-Nfkbia-SR mice. Thymocytes were stained with HY TCR (T3.70)-FITC, CD8-PE, and CD4-QR antibodies. (D) OT-I mice were bred onto either Tg-Nfkbia-SR (B6 background:H-2b) (left panel) or Tg-Nfkbia-SR (B10.BR background:H-2k) (right panel) mice. Histograms show the expression level of OT-I TCR (Vα2) in total thymocytes. The thin line represents WT and the thick blue line represents Tg-Nfkbia-SR thymocytes, respectively. Analysis of CD4+ and CD8+ population in gating on OT-I TCRhi cells in OT-I×WT and OT-I×Tg-Nfkbia-SR mice. Thymocytes were stained with Vα2-FITC, CD8-PE, and CD4-QR antibodies. Immunity 2008 29, 523-537DOI: (10.1016/j.immuni.2008.08.010) Copyright © 2008 Elsevier Inc. Terms and Conditions

Figure 6 Positive Selection of MHC Class II-Restricted TCR Transgenic Mice Is Completely Abolished in IKKβEE Mice (A) Total thymocyte number from 6-week-old AND×WT and AND×Tg-Ikbkb-CA mice (upper panel). Histograms show Annexin V-FITC staining in total thymocyte from AND×WT and AND×Tg-Ikbkb-CA mice (lower panel). (B) Absolute numbers of DP, CD4SP, CD8SP, and DN thymocytes from AND×WT and AND×Tg-Ikbkb-CA mice. (C) Histogram shows the expression level of AND TCR (Vβ3) in total thymocytes (upper panel). The thin line represents AND×WT, and thick lines represent AND×Tg-Ikbkb-CA thymocytes, respectively. Analysis of CD4+ and CD8+ population in AND×WT and AND×Tg-Ikbkb-CA mice is shown (lower panel). Thymocytes and splenocytes were stained with AND TCR (Vβ3)-FITC, CD8-PE, and CD4-QR antibodies. (D) Comparison of CD5 expression on thymocyte from AND and 1H3.1 TCR transgenic mice. Histogram represents CD5 staining in gating on transgenic TCRhi CD4SP cells. The thin line represents AND TCR transgenic thymocytes and the thick line represents 1H3.1 TCR transgenic thymocytes, respectively. (E) Comparison of total thymocyte number from 6-week-old WT or Tg-Ikbkb-CA mice bred onto some MHC class II-restricted transgenic mice. AND (I-Ek) mice were bred onto either WT or Tg-Ikbkb-CA (I-Ek) mice. AND (I-Ab) or 1H3.1 mice were bred onto either WT or Tg-Ikbkb-CA (I-Ab) mice. (F) Histograms show the expression level of 1H3.1 TCR (Vβ6) in total thymocytes (upper panel). Analysis of CD4+ and CD8+ population in gating on 1H3.1 TCR-positive cells in OT-II×WT and OT-II×Tg-Ikbkb-CA mice is shown (lower panel). Thymocytes were stained with Vβ6-FITC, CD8-PE, and CD4-QR antibodies. (G) Total thymocyte number from 6-week-old AND×WT, AND×Ikbkb-CA, AND×WT×H2−/−, and AND×Tg-Ikbkb-CA×H2−/− mice (upper panel). Analysis of CD4+ and CD8+ population in AND×WT×H2−/− and AND×Tg-Ikbkb-CA×H2−/− mice. Thymocytes were stained with Vβ3-FITC, CD8-PE, and CD4-QR antibodies. Immunity 2008 29, 523-537DOI: (10.1016/j.immuni.2008.08.010) Copyright © 2008 Elsevier Inc. Terms and Conditions

Figure 7 Inhibition of NF-κB Does Not Have Any Influence for Positive or Negative Selection of MHC Class II-Restricted TCR Transgenic Mice (A) Analysis of CD4+ and CD8+ population in AND×WT and AND×Tg-Nfkbia-SR mice. Histogram shows the expression level of AND TCR (Vβ3) in total thymocytes. The thin line represents AND×WT and the thick line represents AND×Tg-Nfkbia-SR thymocytes, respectively. Thymocytes were stained with TCR (Vβ3)-FITC, anti-CD8-PE, and anti-CD4-QR antibodies. (B) Analysis of CD4+ and CD8+ population in 1H3.1×WT and 1H3.1×Tg-Nfkbia-SR mice. Thymocytes were stained with 1H3.1 TCR (Vβ6)-FITC, CD8-PE, and CD4-QR antibodies. (C) AND×WT and AND×Tg-Nfkbia-SR mice were crossed with B10.S mice (H-2s). Thymocytes and splenocytes were stained with AND TCR (Vβ3)-FITC, CD8-PE, and CD4-QR antibodies. (D) 1H3.1×WT and 1H3.1×Tg-Nfkbia-SR mice were crossed with B10.A(5R) mice. Thymocytes and splenocytes were stained with 1H3.1TCR (Vβ6)-FITC, CD8-PE, and CD4-QR antibodies. Immunity 2008 29, 523-537DOI: (10.1016/j.immuni.2008.08.010) Copyright © 2008 Elsevier Inc. Terms and Conditions