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Eif2α 9722

Manufactured by Cell Signaling Technology
Sourced in United States

The EIF2α (9722S) is a rabbit monoclonal antibody that recognizes endogenous levels of total eukaryotic translation initiation factor 2α (eIF2α) protein. It is suitable for use in Western blotting applications.

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6 protocols using eif2α 9722

1

Mitochondrial Stress Response Regulation

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CAP, doxycycline, and actinonin were obtained from Wako Pure Chemicals, Osaka, Japan. Antibodies against ATF4, p-eIF2α Ser51 (3795S), and eIF2α (9722S) were purchased from Cell Signaling Technology (Danvers, MA, U.S.A.). Anti-COXI (Ab14705) was from Abcam, Cambridge, U.K. COXIII and SDHA antibodies were from Thermo Fisher Scientific, Waltham, MA, U.S.A. The secondary antibodies, anti-mouse horseradish peroxidase (HRP)-conjugated IgG (#7076) and anti-rabbit HRP-conjugated IgG (#7074), were from Cell Signaling Technology.
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2

Apoptosis Assay Protocol with Inhibitors

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CHE was obtained from Aladdin (Shanghai, China). Antibodies against B-cell lymphoma 2 (Bcl2, sc-492), Bcl2-associated protein x (Bax, sc-493), GAPDH (sc-32233), and horseradish peroxidase (HRP)-conjugated secondary antibodies were purchased from Santa Cruz Biotechnology (Santa Cruz, CA, USA). Antibodies against cleaved form of poly (ADP-ribose) polymerase (cleaved-PARP, 5625S), phosphorylated eukaryotic initiation factor 2α (p-eIF2α, 3398S), eIF2α (9722S), and activating transcription factor-4 (ATF4, 11815S) were obtained from Cell Signaling Technology (Danvers, MA, USA). NAC, DMSO, and MTT were purchased from Sigma-Aldrich (St Louis, MO, USA). Fluorescein isothiocyanate (FITC) Annexin V Apoptosis Detection Kit I and propidium iodide (PI) were purchased from BD Pharmingen (Franklin Lakes, NJ, USA). ROS probe 2′7′-dichlorodihydrofluorescein diacetate (DCFH-DA) was purchased from Thermo Fisher Scientific (Carlsbad, CA, USA).
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3

Antibody Utilization for Protein Analysis

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The following antibodies were used in this study. Antibodies for phospho-p38 (Thr180/Tyr182, 9211), p38 (9212), phospho-JNK (Thr183/Tyr185, 4668), β-actin (51255), phospho-mTOR (Ser2448, 2971) and eIF2α (9722S) were from Cell Signaling Technology. Antibodies for ZAKα (A301–933A) and RPS2 (A303–794A) were purchased from Bethyl Laboratories Inc. Phospho- eIF2α (Ser51, ab32157) from Abcam. Antibodies for FLAG (A8592) and ZAKP (HPA017205) were from Sigma-Aldrich. RPL4 antibody (11302–1-AP) was from Proteintech. GFP antibody (632381) was from Takara. Mouse anti-rabbit IgG-HRP (sc-2357) was from Santa Cruz Biotechnology. Goat anti-mouse IgG2a-HRP (115–035-2006) was from Jackson ImmunoResearch Laboratories Inc.
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4

Epithelial-Mesenchymal Transition Markers

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E-cadherin #3195, Vimentin #5741, ZEB1 #3396, Claudin1 #4933, Snail #3879, β-catenin #9562, Bip #3183, CHOP #2895, eIF2α #9722 and p-eIF2α #9721 (Cell Signaling Technologies Inc. Danvers, MA 01923); Tubulin #B512 (Sigma); GAPDH #FL335 (Santa Cruz); Ubqln polyclonal was made by inoculating rabbits with a peptide specific to Ubqln1 (Yenzym Antibodies LLC); Alexa Fluor 488 goat anti-rabbit IgG #A11034 (Molecular Probes, Invitrogen detection technologies, Eugene, OR. USA); Alexa Fluor 568 Phalloidin #A12380 (Life technologies Eugene, OR. USA).
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5

Protein Expression Analysis by Western Blot

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Cells were lysed with lysis buffer containing 50 mM Tris-HCl, 1% sodium dodecyl sulfate, 1 mM dithiothreitol and 0.43 mM 4-(2-Aminoethyl) benzenesulfonyl fluoride hydrochloride. The lysates were sonicated and centrifuged at 20,400× g at 4 °C for 20 min, and the supernatant was collected. Equal amounts of the protein extract were subjected to sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and transferred to a polyvinylidene difluoride membrane (EMD Millipore, Billerica, MA, USA). The following were used as the primary antibodies: rabbit anti-human S6K (#2708), phospho-S6K (Thr389) (#9234), anti-human 4E-BP1 (#9644), phospho-4E-BP1 (Ser65) (#9451), ATF4 (#11815), ASCT2 (#8057), phospho-eIF2α (Ser51) (#9721), eIF2α (#9722) antibodies (Cell Signaling Technology, Inc., Danvers, MA, USA), mouse anti-human β-actin antibody (A5441; Sigma), mouse anti-human ASNS antibody (G-10; Santa Cruz Biotechnology, Santa Cruz, CA), rabbit anti-human GPT2 (16757-1-AP) antibody (Proteintech Group, Inc., Chicago, IL, USA), rabbit anti-human Glutaminase (ab156876) and xCT(ab37185) antibodies (Abcam, Cambridge, UK). Signals were detected with Chemi-Lumi One L (Nacalai Tesque, Kyoto, Japan) or Immobilon Western Chemiluminescent HRP Substrate (EMD Millipore). All experiments shown were replicated at least twice.
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6

Epithelial-Mesenchymal Transition Markers

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E-cadherin #3195, Vimentin #5741, ZEB1 #3396, Claudin1 #4933, Snail #3879, β-catenin #9562, Bip #3183, CHOP #2895, eIF2α #9722 and p-eIF2α #9721 (Cell Signaling Technologies Inc. Danvers, MA 01923); Tubulin #B512 (Sigma); GAPDH #FL335 (Santa Cruz); Ubqln polyclonal was made by inoculating rabbits with a peptide specific to Ubqln1 (Yenzym Antibodies LLC); Alexa Fluor 488 goat anti-rabbit IgG #A11034 (Molecular Probes, Invitrogen detection technologies, Eugene, OR. USA); Alexa Fluor 568 Phalloidin #A12380 (Life technologies Eugene, OR. USA).
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