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5 protocols using ki67 alexa fluor 488

1

Anti-PD-1 and Anti-CTLA4 Antibody Protocol

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Therapeutic anti-PD-1 (clone RMP1-14) and anti-CTLA4 (9H10) monoclonal antibodies were produced by BioXcell. Antibodies used for flow cytometry were purchased from the following sources (dilutions are indicated in parentheses): eBioscience (CD45.2 Alexa Fluor 700, cat: 56-0454 (1:200), CD3 PE-Cy7, cat: 25-0031 (1:200), CD4 ef450, cat: 48-0041 (1:200), CD8 PerCP-efluor710, cat: 46-0083 (1:200), CD11b APC-efluor 780, cat: 47-0112 (1:600), ICOS PE, cat: 12-5985 (1:200), PD-L1 PE Cy7, cat: 25-5982-82 (1:200), FoxP3 Alexa Fluor 700, cat: 56-5773 (1:100), FoxP3 APC, cat: 17-5773 (1:200), PD-1 PE-Cy7, cat: 25-9985 (1:200)), Invitrogen (Granzyme B PE-Texas Red, cat: GRB17 (1:125)) and BD Pharmingen (Ki67-Alexa Fluor 488, cat: 561165 (1:50)).
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2

Cell Cycle and Apoptosis Analysis

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For cell cycle analysis, fully surface stained cells (stained as described above, for staining panel see Table S1) were fixed with 1% formaldehyde (Thermo Fisher Scientific), permeabilized with 0.05% Triton X-100 (Sigma) and subsequently stained with Ki67 AlexaFluor488 (BD Biosciences) and DAPI (Thermo Fisher Scientific). For analysis of apoptosis, cells were surface stained (for antibody panel see Table S1) and subsequently stained with Annexin V (Biolegend).
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3

Multiparameter Intracellular Flow Cytometry

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For intracellular staining of Foxp3, ki67, and cytokines, single cell suspensions were fixed and permeabilized using the Foxp3/Transcription factor staining buffer set (eBioscience) according to the manufacturer’s protocol. Cells were stained for 30 minutes at 4 °C with the following directly conjugated antibodies: CD3-PE/CY7, CD4-PerCP/Cy5.5, Foxp3-PE (BioLegend), ki67-AlexaFluor488, IFNγ-AlexaFluor488 (BD Biosciences), IL10-AlexaFluor488 (eBioscience), and Phospho-S6-AlexaFluor488 (Cell Signaling Technology). In addition, anti-mouse CD11b-AlexaFluor488 (BioLegend) was applied to the assessment of retinal macrophages. Acquisition and analysis of cells sorting data were performed on BD FACSCanto II using FlowJo software (Tree Star).
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4

Antibody-mediated Immune Profiling

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Therapeutic anti-CTLA-4 (clone 9H10) antibody and isotype control antibody was purchased from BioXcell (cat: BE0131 and BE0087). Antibodies used for flow cytometry were purchased from the following sources (dilutions are indicated in parentheses): eBioscience (CD45.2 Alexa Fluor 700, cat: 56-0454 (1:200), CD3 PE-Cy7, cat: 25-0031 (1:200), CD4 ef450, cat: 48-0041 (1:200), CD4 APC-efluor780, cat: 47-0041 (1:400), CD8 PerCP-efluor710, cat: 46-0083 (1:200), CD11b APC-efluor 780, cat: 47-0112 (1:600), ICOS PE, cat: 12-5985 (1:200), ICOSL PE, cat: 12-5985 (1:200), CTLA-4 PE, cat: 12-1522 (1:200), NK1.1 PE, cat: 12-5941 (1:200), IFNγ PE, cat: 12-7311 (1:200), FoxP3 Alexa Fluor 700, cat: 56-5773 (1:100), FoxP3 APC, cat: 17-5773 (1:200), GATA-3 PE, cat: 12-9966 (1:100), RORγT PerCP-efluor710, cat: 46-6981 (1:100), Tbet PE-Cy7, cat: 25-5825 (1:100), EOMES efluor 450, cat: 48-4875 (1:100), PD-1 PE-Cy7, cat: 25-9985, (1:200)), Biolegend (CD3 BV570, cat: 100225 (1:100), CD11b BV570, cat: 101233 (1:50), Bcl-6 Alexa 594, cat: 648308 (1:50)), Invitrogen (Granzyme B PE-Texas Red, cat: GRB17 (1:125), Granzyme B APC, cat: GRB05 (1:125)) and BD Pharmingen (Ki-67-Alexa Fluor 488, cat: 561165 (1:50), CXCR5-biotin, cat: 551960 (1:100)).
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5

Immunotherapeutic Response Evaluation

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The commercial sources for reagents were as follows: CpG oligodeoxynucleotide ODN2216 (Invitrogen); We used the following antibodies. Therapeutic anti-CTLA4 (clone 9H10 and 9D9), anti-PD1 (clone RMP1-14), anti-PD-L1 (clone 10F.9G2) were purchased from BioXcell; Antibodies used for flow cytometry were purchased from eBioscience (CD45.2 Alexa Fluor 700, CD3 PE-Cy7, CD4 APC-efluor780, CD8 PerCP-efluor710, FOXP3 Alexa Fluor 700, MHC Class I APC, CD40 APC, CD80 APC, CD86 APC), Invitrogen (CD4 QDot 605, Granzyme B PE-Texas Red, Granzyme B APC), BD Pharmingen (Ki-67-Alexa Fluor 488).
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