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7 protocols using ab110333

1

Mitochondrial Dynamics and Protein Quantification

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The following primary antibodies were used: Drp1 (611113; BD Biosciences), Opa1 (612607; BD Biosciences), PDH (ab110333; Abcam), GAPDH (MA5-15738; Thermo), Tim44 (612582; BD Transduction Laboratories), Tim23 (611223; BD Transduction Laboratories), Tom20 (sc-11415; Santa Cruz Biotechnology), mitofusin 1 (ab57602; Abcam), mitofusin 2 (ab56889; Abcam), HA (600-401-384; Rockland), VDAC (4866; Cell Signaling Technology), HSP60 (12165; Cell Signaling Technology), E-cadherin (14472; Cell Signaling Technology), p62 (GP-62C; Progen), ubiquitin (z0458; DAKO), phospho-p62 (serine 351) (PM074; MBL International), LC3 (PM036; MBL) and Keap1 (10503-2-AP; Proteintech). The following secondary antibodies were purchased from Invitrogen: Alexa 488 anti-Rabbit IgG (A21206), Alexa 488 anti-Mouse IgG (A21202), Alexa 488 anti-guinia pig IgG (A11073), Alexa 568 anti-mouse IgG (A10037), Alexa 647 anti-mouse IgG (A31571) and Alexa 647 anti-guinia pig IgG (A21450).
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2

Immunofluorescence Staining of Cultured Cells

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Coverslips were seeded with cultured cells at 5 × 104 cells/ml in 500 μL of DMEM culture medium, then fixed for 15 min at room temperature with 4 % paraformaldehyde. After permeabilization with 0.25 % Triton X-100 in PBS for 10 min, cells were blocked with 1 % bovine serum albumin in PBST for 30 min. The primary antibody was first added to the samples and incubated overnight at 4 °C. Following washing with PBS, the secondary antibody in 1 % BSA/PBST was then incubated at room temperature for 1 h. Discard the antibody and wash the slides. The nucleus was stained with Hoechst33258 (94403, Sigma) for 5 min, and then the coverslip was mounted with a drop of fluorescent mounting medium (S3023, Dako). Store the slides in the dark at −20 °C. The secondary antibodies are as follows: Donkey anti-rabbit IgG (H + L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor 594 (A21207, Invitrogen), Donkey anti-mouse IgG (H + L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor 488 (A21202, Invitrogen). The primary antibodies were applied as follows: anti-PDH (1:2000, ab110333, Abcam) and anti-TOM20 (1:1000, ab186735, Abcam), anti-hSOD1 (1:1000, ab52950, Abcam), and anti-HMGB1(1:1000, ab18256, Abcam).
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3

Immunohistochemistry for Mouse Brain Sections

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For staining mouse DLS and HPC sections, mice were transcardially perfused with 10% formalin and brains were extracted. Brains were postfixed in 10% formalin overnight at 4°C and cryoprotected in 30% sucrose for 48-72 hrs. 40 µm thick coronal sections were obtained using a cryostat microtome (Leica) and preserved in 0.01% sodium azide + PBS at 4°C until use.
Immunohistochemistry was performed using previously published techniques 16, 29 (link) . Briefly, sections were washed 3x for 10 min in 1X TBS, then blocked for 1 hr at RT in 1X TBS solution containing 5% NGS + 0.25% Triton-X-100. Sections were incubated overnight at 4°C in primary antibodies diluted in blocking solution. The following primary antibodies were used: chicken anti-GFP (1:2000; Abcam ab13970) and mouse anti-pyruvate dehydrogenase (PDH) (1:1000, Abcam ab110333). The following day sections were washed 3x for 10 min each in 1X TBS and incubated with appropriate secondary antibodies in blocking solution for 2 hr at RT. The following secondary antibodies were used: Alexa-488 goat anti-chicken (1:2000; Abcam ab150176) and Alexa-594 goat anti-mouse (1:2000; Abcam ab150120). Sections were rinsed 3x for 10 min in 1X TBS and then mounted on microscope slides in Fluoromount (Diagnostic Biosystems; K024) for imaging.
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4

Western Blot Analysis of Cellular Markers

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As previously described, tissue was homogenized, and cells were broken in the RIPA lysis buffer (BP571-5, Fisher) [30 (link)]. The protein concentrations were measured by using a BCA protein assay kit (23225, ThermoFisher). Afterwards, the homogenates were electrophoretically separated using SDS-PAGE. Proteins were separated by electrophoresis and transferred to PVDF membranes, which were blocked in the blocking buffer (5 % milk in PBST) for an hour. A primary antibody was then incubated overnight at 4 °C on the membrane, followed by a secondary horseradish peroxidase-conjugated antibody for 1 h at room temperature. An ECL kit was used to visualize the antigen-antibody complexes (1705061, Bio-Rad). The primary antibodies used were as follows: anti-hSOD1 (1:1000, ab52950, Abcam), anti-A5C3 (1:500, MM0070-3-P, Medimabs), anti-SIRT1 (1:1000, ab11034, Abcam), anti-SIRT6(1:1000, ab191385, Abcam), anti-P53 (1:1000, ab26, Abcam), anti-P16INK4A (1:1000, sc166760, Santa Cruz), anti-MFN2 (1:1000, ab56889, Abcam), anti-PGC-1α (1:500, ab54481, Abcam), anti-TOM20 (1:1000, ab186735, Abcam), anti-PDH (1:1000, ab110333, Abcam), anti-STX17 (1:500, ab229646, Abcam), anti-β-actin (1:5000, sc47778, Santa Cruz) and Histone H1 (1:1000, sc8030, Santa Cruz). Histone H1 (for the nuclear fraction) and β-action (for total protein and cytoplasmic fraction) were used as loading controls.
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5

Mitochondrial Protein Immunoblotting Protocol

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Mitochondrial suspensions or MDV fractions were collected in SDS‐PAGE buffer (6X Laemmli buffer), vortexed, boiled at 95°C for 5 minutes, and stored at −80°C. Equal volumes of samples were loaded onto a stain‐free gel (TGX Stain‐Free FastCast, 10%, 1.5 mm thick) and electrophoresis was performed at 150 V for 1 hour. PVDF membranes were activated in 100% methanol for 20 seconds, transferred to water for 2 minutes, and left in cold transfer buffer until use. Gels were activated using UV light for 45 seconds in a ChemiDoc Touch imaging system (Bio‐Rad) at high power and 365 nm wavelength. Proteins were transferred onto the membrane using a Trans‐Blot Turbo transfer system (Bio‐Rad) at 1.3 A and up to 25 V for 10 min. Stain‐free images were taken by exposing membranes to UV light using the above‐mentioned settings. Membranes were probed with an anti‐PDHE2/E3bp antibody (ab110333, Abcam) using Snap ID 2.0. Bands were visualized via chemiluminescence using Clarity Western ECL substrate (Bio‐Rad) and imaged under a ChemiDoc Touch imaging system (Bio‐Rad).
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6

Immunohistochemistry for Mouse Brain Sections

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For staining mouse DLS and HPC sections, mice were transcardially perfused with 10% formalin and brains were extracted. Brains were postfixed in 10% formalin overnight at 4°C and cryoprotected in 30% sucrose for 48-72 hrs. 40 µm thick coronal sections were obtained using a cryostat microtome (Leica) and preserved in 0.01% sodium azide + PBS at 4°C until use.
Immunohistochemistry was performed using previously published techniques 16, 29 (link) . Briefly, sections were washed 3x for 10 min in 1X TBS, then blocked for 1 hr at RT in 1X TBS solution containing 5% NGS + 0.25% Triton-X-100. Sections were incubated overnight at 4°C in primary antibodies diluted in blocking solution. The following primary antibodies were used: chicken anti-GFP (1:2000; Abcam ab13970) and mouse anti-pyruvate dehydrogenase (PDH) (1:1000, Abcam ab110333). The following day sections were washed 3x for 10 min each in 1X TBS and incubated with appropriate secondary antibodies in blocking solution for 2 hr at RT. The following secondary antibodies were used: Alexa-488 goat anti-chicken (1:2000; Abcam ab150176) and Alexa-594 goat anti-mouse (1:2000; Abcam ab150120). Sections were rinsed 3x for 10 min in 1X TBS and then mounted on microscope slides in Fluoromount (Diagnostic Biosystems; K024) for imaging.
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7

Immunofluorescent Staining of Mouse Brain Sections

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For staining mouse DLS and HPC sections, mice were transcardially perfused with 10% formalin and brains were extracted. Brains were post xed in 10% formalin overnight at 4°C and cryoprotected in 30% sucrose for 48-72 hrs. 40 µm thick coronal sections were obtained using a cryostat microtome (Leica) and preserved in 0.01% sodium azide + PBS at 4°C until use. Immunohistochemistry was performed using previously published techniques16,29. Brie y, sections were washed 3x for 10 min in 1X TBS, then blocked for 1 hr at RT in 1X TBS solution containing 5% NGS + 0.25% Triton-X-100. Sections were incubated overnight at 4°C in primary antibodies diluted in blocking solution. The following primary antibodies were used: chicken anti-GFP (1:2000; Abcam ab13970) and mouse anti-pyruvate dehydrogenase (PDH) (1:1000, Abcam ab110333). The following day sections were washed 3x for 10 min each in 1X TBS and incubated with appropriate secondary antibodies in blocking solution for 2 hr at RT. The following secondary antibodies were used: Alexa-488 goat anti-chicken (1:2000; Abcam ab150176) and Alexa-594 goat anti-mouse (1:2000; Abcam ab150120). Sections were rinsed 3x for 10 min in 1X TBS and then mounted on microscope slides in Fluoromount (Diagnostic Biosystems; K024) for imaging.
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