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Affinity Biosciences phosphorylated plcγ1
Exploring the impact of ITK on T cell subsets. ( A ) Schematic diagram of the study design (the CD3⁺ T cells shown were primary cells isolated and sorted from the spleens of C57BL/6 mice, subsequently transduced with lentivirus and selected with puromycin to generate stable cell lines for subsequent experiments); ( B ) Quantitative detection of total CD3 + T cell proportions in BM via flow cytometry; (C) Quantitative detection of CD4 + T cell proportions in BM via flow cytometry; ( D ) Quantitative detection of CD8 + T cell proportions in BM via flow cytometry; ( E ) Quantitative detection of Th1 (CD4 + IFN-γ + ) cell proportions in BM via flow cytometry; ( F ) Quantitative detection of Th2 (CD4 + IL-4 + ) cell proportions in BM via flow cytometry; ( G ) Quantitative detection of Th17 (CD4 + IL-17 + ) cell proportions in BM via flow cytometry; ( H ) Quantitative detection of Treg (CD4 + CD25 + Foxp3 + ) cell proportions in BM via flow cytometry; ( I ) Flow cytometry analysis of the levels of ITK and <t>PLCγ1</t> phosphorylation in CD3 + T cells in BM; ( J ) Flow cytometry analysis of the mean fluorescence intensity (MFI) of ITK and <t>p-PLCγ1;</t> ( K ) IHC analysis of the levels of ITK and PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * Indicates p < 0.05 between groups, ** indicates p < 0.001 between groups, *** indicates p < 0.001 between groups, with 6 mice per group
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1) Product Images from "Targeted inhibition of ITK activity with anti-CD3 antibody-modified calcium silicate nanoparticles loaded with novel 7H-Pyrrolo[2,3-d]pyrimidine derivatives for treating aplastic anemia"

Article Title: Targeted inhibition of ITK activity with anti-CD3 antibody-modified calcium silicate nanoparticles loaded with novel 7H-Pyrrolo[2,3-d]pyrimidine derivatives for treating aplastic anemia

Journal: Journal of Nanobiotechnology

doi: 10.1186/s12951-026-04276-7

Exploring the impact of ITK on T cell subsets. ( A ) Schematic diagram of the study design (the CD3⁺ T cells shown were primary cells isolated and sorted from the spleens of C57BL/6 mice, subsequently transduced with lentivirus and selected with puromycin to generate stable cell lines for subsequent experiments); ( B ) Quantitative detection of total CD3 + T cell proportions in BM via flow cytometry; (C) Quantitative detection of CD4 + T cell proportions in BM via flow cytometry; ( D ) Quantitative detection of CD8 + T cell proportions in BM via flow cytometry; ( E ) Quantitative detection of Th1 (CD4 + IFN-γ + ) cell proportions in BM via flow cytometry; ( F ) Quantitative detection of Th2 (CD4 + IL-4 + ) cell proportions in BM via flow cytometry; ( G ) Quantitative detection of Th17 (CD4 + IL-17 + ) cell proportions in BM via flow cytometry; ( H ) Quantitative detection of Treg (CD4 + CD25 + Foxp3 + ) cell proportions in BM via flow cytometry; ( I ) Flow cytometry analysis of the levels of ITK and PLCγ1 phosphorylation in CD3 + T cells in BM; ( J ) Flow cytometry analysis of the mean fluorescence intensity (MFI) of ITK and p-PLCγ1; ( K ) IHC analysis of the levels of ITK and PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * Indicates p < 0.05 between groups, ** indicates p < 0.001 between groups, *** indicates p < 0.001 between groups, with 6 mice per group
Figure Legend Snippet: Exploring the impact of ITK on T cell subsets. ( A ) Schematic diagram of the study design (the CD3⁺ T cells shown were primary cells isolated and sorted from the spleens of C57BL/6 mice, subsequently transduced with lentivirus and selected with puromycin to generate stable cell lines for subsequent experiments); ( B ) Quantitative detection of total CD3 + T cell proportions in BM via flow cytometry; (C) Quantitative detection of CD4 + T cell proportions in BM via flow cytometry; ( D ) Quantitative detection of CD8 + T cell proportions in BM via flow cytometry; ( E ) Quantitative detection of Th1 (CD4 + IFN-γ + ) cell proportions in BM via flow cytometry; ( F ) Quantitative detection of Th2 (CD4 + IL-4 + ) cell proportions in BM via flow cytometry; ( G ) Quantitative detection of Th17 (CD4 + IL-17 + ) cell proportions in BM via flow cytometry; ( H ) Quantitative detection of Treg (CD4 + CD25 + Foxp3 + ) cell proportions in BM via flow cytometry; ( I ) Flow cytometry analysis of the levels of ITK and PLCγ1 phosphorylation in CD3 + T cells in BM; ( J ) Flow cytometry analysis of the mean fluorescence intensity (MFI) of ITK and p-PLCγ1; ( K ) IHC analysis of the levels of ITK and PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * Indicates p < 0.05 between groups, ** indicates p < 0.001 between groups, *** indicates p < 0.001 between groups, with 6 mice per group

Techniques Used: Isolation, Transduction, Stable Transfection, Flow Cytometry, Phospho-proteomics, Fluorescence, MANN-WHITNEY

Synthesis and inhibition effect evaluation of NPDP. ( A ) NPDP synthesis pathway diagram. This illustrates synthesizing NPDP from the starting material S1 through three steps, with reaction conditions and key intermediates S2 and S3 labeled for each step; ( B ) molecular docking model of NPDP with ITK. The left panel shows the overall 3D model of NPDP binding to ITK, the middle panel displays the secondary structure representation of ITK, and the right panel provides an enlarged view showing the detailed interactions of NPDP with the active site of ITK; ( C ) western blot analysis verifying the inhibitory effect of NPDP on ITK activity. The left panel shows the expression levels of p-ITK, ITK, p-PLCγ1, and PLCγ1 protein in Jurkat cells treated with NPDP, while the right panel shows the corresponding protein expression levels in CD3 + T cells overexpressing ITK after NPDP treatment; ( D ) western blot analysis of p-PLCγ1 and PLCγ1 expression in Jurkat cells following ITK knockdown and NPDP treatment; ( E ) western blot analysis of p-ITK and ITK expression in Jurkat cells treated with varying concentrations of NPDP or PRN694; ( F ) western blot analysis of p-ITK, ITK, p-PLCγ1, and PLCγ1 expression in Jurkat cells subjected to TCR stimulation and treated with NPDP or PRN694. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). All cell experiments were conducted in triplicate
Figure Legend Snippet: Synthesis and inhibition effect evaluation of NPDP. ( A ) NPDP synthesis pathway diagram. This illustrates synthesizing NPDP from the starting material S1 through three steps, with reaction conditions and key intermediates S2 and S3 labeled for each step; ( B ) molecular docking model of NPDP with ITK. The left panel shows the overall 3D model of NPDP binding to ITK, the middle panel displays the secondary structure representation of ITK, and the right panel provides an enlarged view showing the detailed interactions of NPDP with the active site of ITK; ( C ) western blot analysis verifying the inhibitory effect of NPDP on ITK activity. The left panel shows the expression levels of p-ITK, ITK, p-PLCγ1, and PLCγ1 protein in Jurkat cells treated with NPDP, while the right panel shows the corresponding protein expression levels in CD3 + T cells overexpressing ITK after NPDP treatment; ( D ) western blot analysis of p-PLCγ1 and PLCγ1 expression in Jurkat cells following ITK knockdown and NPDP treatment; ( E ) western blot analysis of p-ITK and ITK expression in Jurkat cells treated with varying concentrations of NPDP or PRN694; ( F ) western blot analysis of p-ITK, ITK, p-PLCγ1, and PLCγ1 expression in Jurkat cells subjected to TCR stimulation and treated with NPDP or PRN694. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). All cell experiments were conducted in triplicate

Techniques Used: Inhibition, Labeling, Binding Assay, Western Blot, Activity Assay, Expressing, Knockdown, MANN-WHITNEY

Functionalization of porous calcium silicate nanoparticles and their application in immune cell targeting. ( A ) Illustration showing the transition from basic pSiNPs to pCaSiNPs, followed by the functionalization with CD3 antibodies to create antiCD3-pCaSiNPs and the drug carrier form (antiCD3-pCaSiNP@NPDP); ( B ) ELISA detection of the presence of CD3 antibodies in different nanoparticles; ( C ) Zeta potential measurements of different nanoparticles reflecting changes in surface charge; ( D ) LC-MS analysis of the amount of NPDP released from antiCD3-pCaSiNP@NPDP nanoparticles under different pH conditions; ( E ) SEM images showing the microstructural changes from untreated pSiNPs to drug-loaded pCaSiNPs, with the boxed area indicating the magnified position; left image Bar = 100 nm, right image Bar = 50 nm; ( G ) Flow cytometry analysis of binding rates of Alexa Fluor 488-labeled antiCD3-pCaSiNP@NPDP nanoparticles to different immune cell types, highlighting high affinity for T cells; ( H ) Confocal microscopy showing intracellular localization of antiCD3-pCaSiNP@NPDP nanoparticles; ( I ) Western blot analysis of p-ITK and p-PLCγ1 expression in CD3⁺ T cells under different treatment conditions. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). *** indicates p < 0.001 between the two groups, ns indicates no significant difference between the two groups; cell experiments were repeated three times
Figure Legend Snippet: Functionalization of porous calcium silicate nanoparticles and their application in immune cell targeting. ( A ) Illustration showing the transition from basic pSiNPs to pCaSiNPs, followed by the functionalization with CD3 antibodies to create antiCD3-pCaSiNPs and the drug carrier form (antiCD3-pCaSiNP@NPDP); ( B ) ELISA detection of the presence of CD3 antibodies in different nanoparticles; ( C ) Zeta potential measurements of different nanoparticles reflecting changes in surface charge; ( D ) LC-MS analysis of the amount of NPDP released from antiCD3-pCaSiNP@NPDP nanoparticles under different pH conditions; ( E ) SEM images showing the microstructural changes from untreated pSiNPs to drug-loaded pCaSiNPs, with the boxed area indicating the magnified position; left image Bar = 100 nm, right image Bar = 50 nm; ( G ) Flow cytometry analysis of binding rates of Alexa Fluor 488-labeled antiCD3-pCaSiNP@NPDP nanoparticles to different immune cell types, highlighting high affinity for T cells; ( H ) Confocal microscopy showing intracellular localization of antiCD3-pCaSiNP@NPDP nanoparticles; ( I ) Western blot analysis of p-ITK and p-PLCγ1 expression in CD3⁺ T cells under different treatment conditions. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). *** indicates p < 0.001 between the two groups, ns indicates no significant difference between the two groups; cell experiments were repeated three times

Techniques Used: Enzyme-linked Immunosorbent Assay, Zeta Potential Analyzer, Liquid Chromatography with Mass Spectroscopy, Flow Cytometry, Binding Assay, Labeling, Confocal Microscopy, Western Blot, Expressing, MANN-WHITNEY

Investigating the effects of antiCD3-pCaSiNP@NPDP treatment on T cell differentiation and PLCγ1 phosphorylation. ( A ) Flow cytometry analysis of bone marrow CD3⁺ T-cell binding to antiCD3-pCaSiNP@NPDP nanoparticles; ( B ) Flow cytometry analysis of total CD3 + T cell proportion in BM; ( C ) Flow cytometry analysis of CD4 + T cell proportion in BM; ( D ) Flow cytometry analysis of CD8 + T cell proportion in BM; ( E ) Flow cytometry analysis of Th1 (CD4 + IFN-γ + ) cell proportion in BM; ( F ) Flow cytometry analysis of Th2 (CD4 + IL-4 + ) cell proportion in BM; ( G ) Flow cytometry analysis of Th17 (CD4 + IL-17 + ) cell proportion in BM; ( H ) Flow cytometry analysis of Treg (CD4 + CD25 + Foxp3 + ) cell proportion in BM; ( I ) Flow cytometry of Th1 (IFN-γ⁺) cells; ( L ) Flow cytometry analysis of PLCγ1 phosphorylation level; ( M ) IHC analysis of PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * indicates p < 0.05, ** indicates p < 0.001, *** indicates p < 0.001, with 6 mice per group
Figure Legend Snippet: Investigating the effects of antiCD3-pCaSiNP@NPDP treatment on T cell differentiation and PLCγ1 phosphorylation. ( A ) Flow cytometry analysis of bone marrow CD3⁺ T-cell binding to antiCD3-pCaSiNP@NPDP nanoparticles; ( B ) Flow cytometry analysis of total CD3 + T cell proportion in BM; ( C ) Flow cytometry analysis of CD4 + T cell proportion in BM; ( D ) Flow cytometry analysis of CD8 + T cell proportion in BM; ( E ) Flow cytometry analysis of Th1 (CD4 + IFN-γ + ) cell proportion in BM; ( F ) Flow cytometry analysis of Th2 (CD4 + IL-4 + ) cell proportion in BM; ( G ) Flow cytometry analysis of Th17 (CD4 + IL-17 + ) cell proportion in BM; ( H ) Flow cytometry analysis of Treg (CD4 + CD25 + Foxp3 + ) cell proportion in BM; ( I ) Flow cytometry of Th1 (IFN-γ⁺) cells; ( L ) Flow cytometry analysis of PLCγ1 phosphorylation level; ( M ) IHC analysis of PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * indicates p < 0.05, ** indicates p < 0.001, *** indicates p < 0.001, with 6 mice per group

Techniques Used: Cell Differentiation, Phospho-proteomics, Flow Cytometry, Binding Assay, MANN-WHITNEY

Related Articles

Incubation:

Article Title: Targeted inhibition of ITK activity with anti-CD3 antibody-modified calcium silicate nanoparticles loaded with novel 7H-Pyrrolo[2,3-d]pyrimidine derivatives for treating aplastic anemia
Article Snippet: .. Primary antibodies against ITK (rabbit, 1:200, PA5-29669, Thermo Fisher, USA), CD3 (rat, 1:200, 14–0032-82, Thermo Fisher, USA), and phosphorylated PLCγ1 (rabbit, 1:200, AF3210, Affbiotech, China) were applied and incubated overnight at 4 °C. .. After incubation, slides were washed with PBS and treated with fluorescently labeled secondary antibodies: rhodamine-conjugated goat anti-rabbit (1:200, AS040, Abclonal, China) and FITC-conjugated goat anti-rat (2.5 μg/mL, A18866, Thermo Fisher, USA).



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Exploring the impact of ITK on T cell subsets. ( A ) Schematic diagram of the study design (the CD3⁺ T cells shown were primary cells isolated and sorted from the spleens of C57BL/6 mice, subsequently transduced with lentivirus and selected with puromycin to generate stable cell lines for subsequent experiments); ( B ) Quantitative detection of total CD3 + T cell proportions in BM via flow cytometry; (C) Quantitative detection of CD4 + T cell proportions in BM via flow cytometry; ( D ) Quantitative detection of CD8 + T cell proportions in BM via flow cytometry; ( E ) Quantitative detection of Th1 (CD4 + IFN-γ + ) cell proportions in BM via flow cytometry; ( F ) Quantitative detection of Th2 (CD4 + IL-4 + ) cell proportions in BM via flow cytometry; ( G ) Quantitative detection of Th17 (CD4 + IL-17 + ) cell proportions in BM via flow cytometry; ( H ) Quantitative detection of Treg (CD4 + CD25 + Foxp3 + ) cell proportions in BM via flow cytometry; ( I ) Flow cytometry analysis of the levels of ITK and <t>PLCγ1</t> phosphorylation in CD3 + T cells in BM; ( J ) Flow cytometry analysis of the mean fluorescence intensity (MFI) of ITK and <t>p-PLCγ1;</t> ( K ) IHC analysis of the levels of ITK and PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * Indicates p < 0.05 between groups, ** indicates p < 0.001 between groups, *** indicates p < 0.001 between groups, with 6 mice per group
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Exploring the impact of ITK on T cell subsets. ( A ) Schematic diagram of the study design (the CD3⁺ T cells shown were primary cells isolated and sorted from the spleens of C57BL/6 mice, subsequently transduced with lentivirus and selected with puromycin to generate stable cell lines for subsequent experiments); ( B ) Quantitative detection of total CD3 + T cell proportions in BM via flow cytometry; (C) Quantitative detection of CD4 + T cell proportions in BM via flow cytometry; ( D ) Quantitative detection of CD8 + T cell proportions in BM via flow cytometry; ( E ) Quantitative detection of Th1 (CD4 + IFN-γ + ) cell proportions in BM via flow cytometry; ( F ) Quantitative detection of Th2 (CD4 + IL-4 + ) cell proportions in BM via flow cytometry; ( G ) Quantitative detection of Th17 (CD4 + IL-17 + ) cell proportions in BM via flow cytometry; ( H ) Quantitative detection of Treg (CD4 + CD25 + Foxp3 + ) cell proportions in BM via flow cytometry; ( I ) Flow cytometry analysis of the levels of ITK and PLCγ1 phosphorylation in CD3 + T cells in BM; ( J ) Flow cytometry analysis of the mean fluorescence intensity (MFI) of ITK and p-PLCγ1; ( K ) IHC analysis of the levels of ITK and PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * Indicates p < 0.05 between groups, ** indicates p < 0.001 between groups, *** indicates p < 0.001 between groups, with 6 mice per group

Journal: Journal of Nanobiotechnology

Article Title: Targeted inhibition of ITK activity with anti-CD3 antibody-modified calcium silicate nanoparticles loaded with novel 7H-Pyrrolo[2,3-d]pyrimidine derivatives for treating aplastic anemia

doi: 10.1186/s12951-026-04276-7

Figure Lengend Snippet: Exploring the impact of ITK on T cell subsets. ( A ) Schematic diagram of the study design (the CD3⁺ T cells shown were primary cells isolated and sorted from the spleens of C57BL/6 mice, subsequently transduced with lentivirus and selected with puromycin to generate stable cell lines for subsequent experiments); ( B ) Quantitative detection of total CD3 + T cell proportions in BM via flow cytometry; (C) Quantitative detection of CD4 + T cell proportions in BM via flow cytometry; ( D ) Quantitative detection of CD8 + T cell proportions in BM via flow cytometry; ( E ) Quantitative detection of Th1 (CD4 + IFN-γ + ) cell proportions in BM via flow cytometry; ( F ) Quantitative detection of Th2 (CD4 + IL-4 + ) cell proportions in BM via flow cytometry; ( G ) Quantitative detection of Th17 (CD4 + IL-17 + ) cell proportions in BM via flow cytometry; ( H ) Quantitative detection of Treg (CD4 + CD25 + Foxp3 + ) cell proportions in BM via flow cytometry; ( I ) Flow cytometry analysis of the levels of ITK and PLCγ1 phosphorylation in CD3 + T cells in BM; ( J ) Flow cytometry analysis of the mean fluorescence intensity (MFI) of ITK and p-PLCγ1; ( K ) IHC analysis of the levels of ITK and PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * Indicates p < 0.05 between groups, ** indicates p < 0.001 between groups, *** indicates p < 0.001 between groups, with 6 mice per group

Article Snippet: Primary antibodies against ITK (rabbit, 1:200, PA5-29669, Thermo Fisher, USA), CD3 (rat, 1:200, 14–0032-82, Thermo Fisher, USA), and phosphorylated PLCγ1 (rabbit, 1:200, AF3210, Affbiotech, China) were applied and incubated overnight at 4 °C.

Techniques: Isolation, Transduction, Stable Transfection, Flow Cytometry, Phospho-proteomics, Fluorescence, MANN-WHITNEY

Synthesis and inhibition effect evaluation of NPDP. ( A ) NPDP synthesis pathway diagram. This illustrates synthesizing NPDP from the starting material S1 through three steps, with reaction conditions and key intermediates S2 and S3 labeled for each step; ( B ) molecular docking model of NPDP with ITK. The left panel shows the overall 3D model of NPDP binding to ITK, the middle panel displays the secondary structure representation of ITK, and the right panel provides an enlarged view showing the detailed interactions of NPDP with the active site of ITK; ( C ) western blot analysis verifying the inhibitory effect of NPDP on ITK activity. The left panel shows the expression levels of p-ITK, ITK, p-PLCγ1, and PLCγ1 protein in Jurkat cells treated with NPDP, while the right panel shows the corresponding protein expression levels in CD3 + T cells overexpressing ITK after NPDP treatment; ( D ) western blot analysis of p-PLCγ1 and PLCγ1 expression in Jurkat cells following ITK knockdown and NPDP treatment; ( E ) western blot analysis of p-ITK and ITK expression in Jurkat cells treated with varying concentrations of NPDP or PRN694; ( F ) western blot analysis of p-ITK, ITK, p-PLCγ1, and PLCγ1 expression in Jurkat cells subjected to TCR stimulation and treated with NPDP or PRN694. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). All cell experiments were conducted in triplicate

Journal: Journal of Nanobiotechnology

Article Title: Targeted inhibition of ITK activity with anti-CD3 antibody-modified calcium silicate nanoparticles loaded with novel 7H-Pyrrolo[2,3-d]pyrimidine derivatives for treating aplastic anemia

doi: 10.1186/s12951-026-04276-7

Figure Lengend Snippet: Synthesis and inhibition effect evaluation of NPDP. ( A ) NPDP synthesis pathway diagram. This illustrates synthesizing NPDP from the starting material S1 through three steps, with reaction conditions and key intermediates S2 and S3 labeled for each step; ( B ) molecular docking model of NPDP with ITK. The left panel shows the overall 3D model of NPDP binding to ITK, the middle panel displays the secondary structure representation of ITK, and the right panel provides an enlarged view showing the detailed interactions of NPDP with the active site of ITK; ( C ) western blot analysis verifying the inhibitory effect of NPDP on ITK activity. The left panel shows the expression levels of p-ITK, ITK, p-PLCγ1, and PLCγ1 protein in Jurkat cells treated with NPDP, while the right panel shows the corresponding protein expression levels in CD3 + T cells overexpressing ITK after NPDP treatment; ( D ) western blot analysis of p-PLCγ1 and PLCγ1 expression in Jurkat cells following ITK knockdown and NPDP treatment; ( E ) western blot analysis of p-ITK and ITK expression in Jurkat cells treated with varying concentrations of NPDP or PRN694; ( F ) western blot analysis of p-ITK, ITK, p-PLCγ1, and PLCγ1 expression in Jurkat cells subjected to TCR stimulation and treated with NPDP or PRN694. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). All cell experiments were conducted in triplicate

Article Snippet: Primary antibodies against ITK (rabbit, 1:200, PA5-29669, Thermo Fisher, USA), CD3 (rat, 1:200, 14–0032-82, Thermo Fisher, USA), and phosphorylated PLCγ1 (rabbit, 1:200, AF3210, Affbiotech, China) were applied and incubated overnight at 4 °C.

Techniques: Inhibition, Labeling, Binding Assay, Western Blot, Activity Assay, Expressing, Knockdown, MANN-WHITNEY

Functionalization of porous calcium silicate nanoparticles and their application in immune cell targeting. ( A ) Illustration showing the transition from basic pSiNPs to pCaSiNPs, followed by the functionalization with CD3 antibodies to create antiCD3-pCaSiNPs and the drug carrier form (antiCD3-pCaSiNP@NPDP); ( B ) ELISA detection of the presence of CD3 antibodies in different nanoparticles; ( C ) Zeta potential measurements of different nanoparticles reflecting changes in surface charge; ( D ) LC-MS analysis of the amount of NPDP released from antiCD3-pCaSiNP@NPDP nanoparticles under different pH conditions; ( E ) SEM images showing the microstructural changes from untreated pSiNPs to drug-loaded pCaSiNPs, with the boxed area indicating the magnified position; left image Bar = 100 nm, right image Bar = 50 nm; ( G ) Flow cytometry analysis of binding rates of Alexa Fluor 488-labeled antiCD3-pCaSiNP@NPDP nanoparticles to different immune cell types, highlighting high affinity for T cells; ( H ) Confocal microscopy showing intracellular localization of antiCD3-pCaSiNP@NPDP nanoparticles; ( I ) Western blot analysis of p-ITK and p-PLCγ1 expression in CD3⁺ T cells under different treatment conditions. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). *** indicates p < 0.001 between the two groups, ns indicates no significant difference between the two groups; cell experiments were repeated three times

Journal: Journal of Nanobiotechnology

Article Title: Targeted inhibition of ITK activity with anti-CD3 antibody-modified calcium silicate nanoparticles loaded with novel 7H-Pyrrolo[2,3-d]pyrimidine derivatives for treating aplastic anemia

doi: 10.1186/s12951-026-04276-7

Figure Lengend Snippet: Functionalization of porous calcium silicate nanoparticles and their application in immune cell targeting. ( A ) Illustration showing the transition from basic pSiNPs to pCaSiNPs, followed by the functionalization with CD3 antibodies to create antiCD3-pCaSiNPs and the drug carrier form (antiCD3-pCaSiNP@NPDP); ( B ) ELISA detection of the presence of CD3 antibodies in different nanoparticles; ( C ) Zeta potential measurements of different nanoparticles reflecting changes in surface charge; ( D ) LC-MS analysis of the amount of NPDP released from antiCD3-pCaSiNP@NPDP nanoparticles under different pH conditions; ( E ) SEM images showing the microstructural changes from untreated pSiNPs to drug-loaded pCaSiNPs, with the boxed area indicating the magnified position; left image Bar = 100 nm, right image Bar = 50 nm; ( G ) Flow cytometry analysis of binding rates of Alexa Fluor 488-labeled antiCD3-pCaSiNP@NPDP nanoparticles to different immune cell types, highlighting high affinity for T cells; ( H ) Confocal microscopy showing intracellular localization of antiCD3-pCaSiNP@NPDP nanoparticles; ( I ) Western blot analysis of p-ITK and p-PLCγ1 expression in CD3⁺ T cells under different treatment conditions. Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). *** indicates p < 0.001 between the two groups, ns indicates no significant difference between the two groups; cell experiments were repeated three times

Article Snippet: Primary antibodies against ITK (rabbit, 1:200, PA5-29669, Thermo Fisher, USA), CD3 (rat, 1:200, 14–0032-82, Thermo Fisher, USA), and phosphorylated PLCγ1 (rabbit, 1:200, AF3210, Affbiotech, China) were applied and incubated overnight at 4 °C.

Techniques: Enzyme-linked Immunosorbent Assay, Zeta Potential Analyzer, Liquid Chromatography with Mass Spectroscopy, Flow Cytometry, Binding Assay, Labeling, Confocal Microscopy, Western Blot, Expressing, MANN-WHITNEY

Investigating the effects of antiCD3-pCaSiNP@NPDP treatment on T cell differentiation and PLCγ1 phosphorylation. ( A ) Flow cytometry analysis of bone marrow CD3⁺ T-cell binding to antiCD3-pCaSiNP@NPDP nanoparticles; ( B ) Flow cytometry analysis of total CD3 + T cell proportion in BM; ( C ) Flow cytometry analysis of CD4 + T cell proportion in BM; ( D ) Flow cytometry analysis of CD8 + T cell proportion in BM; ( E ) Flow cytometry analysis of Th1 (CD4 + IFN-γ + ) cell proportion in BM; ( F ) Flow cytometry analysis of Th2 (CD4 + IL-4 + ) cell proportion in BM; ( G ) Flow cytometry analysis of Th17 (CD4 + IL-17 + ) cell proportion in BM; ( H ) Flow cytometry analysis of Treg (CD4 + CD25 + Foxp3 + ) cell proportion in BM; ( I ) Flow cytometry of Th1 (IFN-γ⁺) cells; ( L ) Flow cytometry analysis of PLCγ1 phosphorylation level; ( M ) IHC analysis of PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * indicates p < 0.05, ** indicates p < 0.001, *** indicates p < 0.001, with 6 mice per group

Journal: Journal of Nanobiotechnology

Article Title: Targeted inhibition of ITK activity with anti-CD3 antibody-modified calcium silicate nanoparticles loaded with novel 7H-Pyrrolo[2,3-d]pyrimidine derivatives for treating aplastic anemia

doi: 10.1186/s12951-026-04276-7

Figure Lengend Snippet: Investigating the effects of antiCD3-pCaSiNP@NPDP treatment on T cell differentiation and PLCγ1 phosphorylation. ( A ) Flow cytometry analysis of bone marrow CD3⁺ T-cell binding to antiCD3-pCaSiNP@NPDP nanoparticles; ( B ) Flow cytometry analysis of total CD3 + T cell proportion in BM; ( C ) Flow cytometry analysis of CD4 + T cell proportion in BM; ( D ) Flow cytometry analysis of CD8 + T cell proportion in BM; ( E ) Flow cytometry analysis of Th1 (CD4 + IFN-γ + ) cell proportion in BM; ( F ) Flow cytometry analysis of Th2 (CD4 + IL-4 + ) cell proportion in BM; ( G ) Flow cytometry analysis of Th17 (CD4 + IL-17 + ) cell proportion in BM; ( H ) Flow cytometry analysis of Treg (CD4 + CD25 + Foxp3 + ) cell proportion in BM; ( I ) Flow cytometry of Th1 (IFN-γ⁺) cells; ( L ) Flow cytometry analysis of PLCγ1 phosphorylation level; ( M ) IHC analysis of PLCγ1 phosphorylation in BM tissue, Bar = 50 μm; Statistical comparisons between groups were made using unpaired Student’s t-test (for normally distributed and variance-homogeneous data) or Mann–Whitney U test (for non-parametric data). * indicates p < 0.05, ** indicates p < 0.001, *** indicates p < 0.001, with 6 mice per group

Article Snippet: Primary antibodies against ITK (rabbit, 1:200, PA5-29669, Thermo Fisher, USA), CD3 (rat, 1:200, 14–0032-82, Thermo Fisher, USA), and phosphorylated PLCγ1 (rabbit, 1:200, AF3210, Affbiotech, China) were applied and incubated overnight at 4 °C.

Techniques: Cell Differentiation, Phospho-proteomics, Flow Cytometry, Binding Assay, MANN-WHITNEY

Knockout of PTPN2 (TCPTP), PTPN22 (PTPN22), or PTPN6 (SHP1) retain TCR signalling and responsiveness to U0126 treatment. ( A ) Truncated schematic of TCR signalling, with black lines/arrows showing forward signalling and red lines/arrows showing the effect of U0126 treatment to reduce flux through the TCR signalling pathway. ( B ) Representative Western blots targeting Erk1 T202Y204 /Erk2 T185Y187 during a U0126 titration. Quantification of U0126 titration Western blots targeting ( C ) Erk1 T202Y204 /Erk2 T185Y187 and ( D ) pY. ( E ) Representative Western blots targeting Erk1 T202Y204 /Erk2 T185Y187 during a TCR stimulation time course in the presence or absence of U0126. Quantification of time course Western blots targeting ( F ) Erk1 T202Y204 /Erk2 T185Y187 , ( G ) pY, ( H ) Src family kinase activation site, sequence NEpYTAR, and ( I ) PLCγ1 Y783 . For all Western blots, statistical significance between 0-min normalised, log2 transformed abundances is determined by Fisher’s LSD with the Holm Sidak correction. ♠♣♥♦ indicate p < 0.05 when comparing the given time point to the 0-min sample for Jurkat, J.TCPTP-, J.PTPN22-, and J.SHP1-, respectively. Upper symbols are for 0.04% DMSO treatment, and lower symbols are for U0126 treatment time courses. `n.s’ indicates no statistical significance in that comparison for any cell line.

Journal: Scientific Reports

Article Title: The phosphatases TCPTP, PTPN22, and SHP1 play unique roles in T cell phosphotyrosine maintenance and feedback regulation of the TCR

doi: 10.1038/s41598-025-12951-2

Figure Lengend Snippet: Knockout of PTPN2 (TCPTP), PTPN22 (PTPN22), or PTPN6 (SHP1) retain TCR signalling and responsiveness to U0126 treatment. ( A ) Truncated schematic of TCR signalling, with black lines/arrows showing forward signalling and red lines/arrows showing the effect of U0126 treatment to reduce flux through the TCR signalling pathway. ( B ) Representative Western blots targeting Erk1 T202Y204 /Erk2 T185Y187 during a U0126 titration. Quantification of U0126 titration Western blots targeting ( C ) Erk1 T202Y204 /Erk2 T185Y187 and ( D ) pY. ( E ) Representative Western blots targeting Erk1 T202Y204 /Erk2 T185Y187 during a TCR stimulation time course in the presence or absence of U0126. Quantification of time course Western blots targeting ( F ) Erk1 T202Y204 /Erk2 T185Y187 , ( G ) pY, ( H ) Src family kinase activation site, sequence NEpYTAR, and ( I ) PLCγ1 Y783 . For all Western blots, statistical significance between 0-min normalised, log2 transformed abundances is determined by Fisher’s LSD with the Holm Sidak correction. ♠♣♥♦ indicate p < 0.05 when comparing the given time point to the 0-min sample for Jurkat, J.TCPTP-, J.PTPN22-, and J.SHP1-, respectively. Upper symbols are for 0.04% DMSO treatment, and lower symbols are for U0126 treatment time courses. `n.s’ indicates no statistical significance in that comparison for any cell line.

Article Snippet: Western Primary Antibodies included pY clone 4G10 (1:2000, Cell Signalling Technologies #96215), PLCγ1 (1:10,000, Millipore Sigma #05-163), phosphorylated PLCγ1 Y783 (1:2000, Cell Signalling Technologies #2821), Erk1/2 (Cell Signalling Technologies #9107), phosphorylated Erk T202Y204 (1:2000, Cell Signalling Technologies #9101), Lck (1:5000, Cell Signalling Technologies #2657S), phosphorylated Src Family Kinase Y416 (1:2000, Cell Signalling Technologies #59548S, 2101S), TCPTP (1:2000, Cell Signalling Technologies #58935S), PTPN22 (1:1000, Thermo #11783–1-AP), SHP1 (1:500, Santa Cruz Biotechnology #sc-287), and Vav1 (1:2000, Cell Signalling Technologies #4657S, 2505S).

Techniques: Knock-Out, Western Blot, Titration, Activation Assay, Sequencing, Transformation Assay, Comparison