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4 protocols using anti bcl11a

1

Immunohistochemical Evaluation of BCL11A

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After dewaxed, rehydrated, and processed for antigen retrieval, the paraffin-embedded sections were quenched with 3% H2O2 and blocked with 3% BSA. The slide was incubated with the primary antibody anti-BCL11A (1:100, Abcam) and with an HRP-conjugated secondary antibody. Staining was visualized by incubation with DAB.
Stained slides were evaluated by 2 experienced pathologists. Based on the staining intensity and the positive rate, a semiquantitative integration method was used to determine the results. The staining intensity score was as follows: colorless = 0, light yellow = 1, yellow-brown = 2, and brown = 3. The percentage of positive cells was scored as follows: < 25% = 1, 26% - 50% = 2, 51% - 75%= 3, >75% = 4. The result of staining was determined using the following formula: score = percentage score × staining intensity score [14 (link), 15 (link)]. Median expression of BCL11A was used as the cutoff and patients were divided into high (n=27) and low (n=26) expression groups.
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2

Immunoblotting of Differentiated HUDEP2 Cells

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Immunoblotting of proteins were performed by following standard protocol. Briefly, total protein from HUDEP2 cells at day 5 of differentiation or primary cells at day 13 of differentiation were extracted with RIPA buffer (50 mM Tris-HCl, pH 7.4, 150 mM NaCl, 1% Triton X-100, 0.5% sodium deoxycholate, 0.1% SDS, 1 mM EDTA)58 (link). Equivalent amounts of protein (10-20 µg) were loaded onto 4-12% or 10% Bis-Tris protein gels (Invitrogen) and separated in 1× MES-SDS running buffer (Invitrogen, NP0002). Separated proteins were transferred onto PVDF membrane and incubated with primary antibodies overnight. Primary antibodies used were anti-NFIA (Active Motif, #39397), 1:5,000; anti-NFIX (clone 3D2, Sigma Aldrich, SAB1401263), 1:500; anti-NFIC (Cell Signaling, #11911), 1:1,000; anti-BCL11A (Abcam, ab19487), 1:1,000; anti-LRF (Thermo Fisher Scientific, #14-3309-82), 1:2,000; anti-hemoglobin γ (Santa Cruz, #21756), 1:1,000; anti-β-Actin (Santa Cruz, #47778), 1:1,000; anti-HA (Cell Signaling, #3724), 1:1,000.
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3

Immunofluorescence Imaging of Mammary Gland

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Protein samples were prepared as described previously14 (link) and probed using anti-BCL11A (Abcam, Clone 14B5, 1:1000) and Actin (Cell Signalling, 1:10000). For IHC analysis, BCL11A (Abcam (14B5, 1:50); CK14 (Abcam; 1:100) and ERα (SCBT; 1:50) were used. Staining was detected using AF488- or Cy3-conjugated secondary (Sigma) and bisbenzimide-Hoechst 33342 (Sigma). Fluorescence microscopy was carried out using a Zeiss Axiophot microscope equipped with a Hamamatsu Orca 285 camera, with images visualized, captured and manipulated using Simple PCI 6 (C Imaging Systems). The hematoxylin- and eosin-stained samples were visualized on a LEICA light microscope, while the mouse mammary gland whole mounts were visualized using the LEICA MZ75 light microscope.
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4

Immunoblotting of Differentiated HUDEP2 Cells

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Immunoblotting of proteins were performed by following standard protocol. Briefly, total protein from HUDEP2 cells at day 5 of differentiation or primary cells at day 13 of differentiation were extracted with RIPA buffer (50 mM Tris-HCl, pH 7.4, 150 mM NaCl, 1% Triton X-100, 0.5% sodium deoxycholate, 0.1% SDS, 1 mM EDTA)58 (link). Equivalent amounts of protein (10-20 µg) were loaded onto 4-12% or 10% Bis-Tris protein gels (Invitrogen) and separated in 1× MES-SDS running buffer (Invitrogen, NP0002). Separated proteins were transferred onto PVDF membrane and incubated with primary antibodies overnight. Primary antibodies used were anti-NFIA (Active Motif, #39397), 1:5,000; anti-NFIX (clone 3D2, Sigma Aldrich, SAB1401263), 1:500; anti-NFIC (Cell Signaling, #11911), 1:1,000; anti-BCL11A (Abcam, ab19487), 1:1,000; anti-LRF (Thermo Fisher Scientific, #14-3309-82), 1:2,000; anti-hemoglobin γ (Santa Cruz, #21756), 1:1,000; anti-β-Actin (Santa Cruz, #47778), 1:1,000; anti-HA (Cell Signaling, #3724), 1:1,000.
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