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5 protocols using rat anti deadpan

1

Immunodetection of Neural Progenitors

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Antibodies for neuroblast (NB) and intermediate neural progenitor (INP) detection were used at the following dilutions in 0.3% PBST (PBS + 10% Triton-X 100): Rabbit anti-phospho-Histone H3 (pH3; Cell Signaling) at 1:500, rat anti-Deadpan (Abcam) at 1:75, goat anti-rabbit Cy3 (Jackson Immunoresearch) at 1:300, and goat anti-rat Alexa 488 (Jackson ImmunoResearch) at 1:250. Anti-Deadpan marks all NBs and INPs and was used to define and exclude the optic lobe during analysis. Anti-pH3 marks all proliferating NBs and progenitor cells in M phase. Antibodies used for the detection of fasciculating axons in the mushroom body were used at the following dilutions in 0.1% PBST: Mouse anti-FasciclinII (Developmental Studies Hybridoma Bank) at 1:20 and goat anti-mouse Alexa 488 (Jackson ImmunoResearch) at 1:1000.
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2

Larval Brain Dissection and Staining

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Larval brains were dissected in PBS and fixed in 4% paraformaldehyde/PEM for 20 min, followed by detection of EdU using the Click-iT EdU imaging kit (Molecular Probes, Eugene, OR) (Doyle et al., 2017 (link)). After thorough washing in 0.1% Triton-x/PBS, antibody staining was performed according to standard methods (Doyle et al., 2017 (link); Siegrist et al., 2010 (link)). Primary antibodies used in this study were: chicken anti-GFP (1:100, Abcam, Cambridge, MA), rat anti-Deadpan (1:100, Abcam), rabbit anti-Scribble (1:200; gift of C. Doe), and rabbit anti-Eyeless (1:1000; gift of U. Waldorf). Secondary antibodies were conjugated to Alexa Fluor dyes (Molecular Probes).
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3

Quantification of Brain Lobe Volume

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Brains were dissected in PBS and fixed with 4% PFA/PBS/0.3%Triton for 20 minutes and blocked in PBS/0.3%Triton/1%BSA/5% normal goat serum and incubated in primary antibody in PBS/0.3%Triton/1%BSA overnight. Primary antibodies include guinea pig anti-Deadpan (gift from Chris Doe, originally from Jim Skeath, 1:1000), rat anti-Deadpan (Abcam ab195172, 1:250 or 1:500), mouse anti-Prospero MR1A (Developmental Studies Hybridoma Bank, 1:1000), rat anti-Elav 7E8A10 (Developmental Studies Hybridoma Bank, 1:250) and mouse anti-Repo 8D12 (Developmental Studies Hybridoma Bank, 1:250) and mouse anti-Strep (Qiagen, 1:500) with goat secondary antibodies from Jackson Laboratories used 1:500. Brains were mounted with tape spacers and imaged using a Leica Sp8 with 2 βm sections through the entire brain lobe. Resulting stacks were analyzed using the Surfaces function in Imaris (Bitplane) to quantify brain lobe volume. One lobe from each brain was analyzed.
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4

Immunostaining of Drosophila Nervous System

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Fly brains at indicated larval, pupal, and adult stages were dissected, fixed and immunostained as described previously (37 (link),39 (link)). The following primary antibodies were used in this study: chicken GFP polyclonal antibody (1:500, Invitrogen, A10262); rat anti-Deadpan (1:100, abcam, ab195173); mouse 1D4 anti-Fasciclin II (1:50, DSHB); rabbit polyclonal anti-Trio (1:1000) (46 (link)); rat anti-Chinmo (1:500, a gift from the Sokol lab) (47 (link)). Secondary antibodies from Molecular Probes were all used in a 1:200 dilution. The immunofluorescent signals were collected using Zeiss LSM 880 confocal microscope and processed using Fiji and Adobe Illustrator.
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5

Late Third Instar Larval Brain Immunostaining

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Late third instar (judged based on gut clearance and extruding spiracles) larval brains were dissected in PBS and fixed with 4% PFA/PBS/0.3% Triton for 20 minutes. For immunostaining, brains were blocked in PBS/0.3% Triton/1% BSA/5% normal goat serum and incubated in primary antibody in PBS/0.3% Triton/1% BSA overnight. Primary antibodies include rat anti-Deadpan (Abcam Cat# ab195172, 1:250 or 1:500), mouse anti-Prospero (Developmental Studies Hybridoma Bank, MR1A, 1:1000), and mouse anti-HA (Covance Cat# 901501, 1:1000) with donkey secondary antibodies from Jackson ImmunoResearch used at 1:500. Brains were mounted with double sided tape spacers and imaged using a confocal microscope (Leica Sp8) with 2 μm or 3 μm sections through the entire brain lobe.
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