Angiopoietin 1 Rabbit Recombinant mAb | Primary Antibodies

Angiopoietin 1 Rabbit Recombinant mAb

Catalog No.: A5342

For research use only.

Filter:

  • WB
  • IHC

Usage Information

Application WB, IHC,ELISA
Dilution
WB IHC
1:1000 1:50
Reactivity Human Rat
MW (kDa) 57kDa
Source Rabbit
Concentration 1mg/ml
Storage buffer 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide.
Storage Store at –20°C.

Datasheet & SDS

Description

Specificity Angiopoietin 1 Rabbit Recombinant mAb detects endogenous level of total angiopoietin 1.
Background Angiopoietin-1 (Ang1) is an oligomeric-secreted glycoprotein and a member, with Ang2 and Ang3/4, of the angiopoietin family of growth factors. These ligands bind Tie2, one of two receptor tyrosine kinases, the other being Tie1, that make up the Tie family of receptors expressed primarily in vascular endothelium. The angiopoietin and Tie families have primary roles in the latter stages of vascular development and in adult vasculature, where they control remodeling and stabilization of vessels. Ang1 is required for correct organization and maturation of newly formed vessels and promotes quiescence and structural integrity of adult vasculature. Ang1 and Ang2 bind to Tie2 with similar affinities; however, whereas Ang1 is an agonist, the ability of Ang2 to activate Tie2 appears to depend on the cell type and context. Ang1 is widely expressed and is present in periendothelial cells in quiescent vasculature. Ang1 inhibits endothelial cell apoptosis and stimulates endothelial cell migration.

Protocol

WB

Western Blotting

Sample preparation

1. Aspirate media from cultures and Wash the cells with 1X PBS.
2. Lyse cells by adding 1X SDS sample buffer and transfer the extract to a microcentrifuge tube. Keep onice.
3. Sonicate for 10–15 sec to complete cell lysis and shear DNA.
4. Heat a 20 µl sample to 95–100°C for 5 min, then cool on ice.
5. Centrifuge for 5 min (with Microcentrifuge).
6. Load appropriate volumes of samples onto SDS-PAGE gel (loading quantity of protein sample depends on the concentration of extracted proteins).
NOTE: At the same time, please load the pre-stained molecular weight markers to determine molecular weights and verify electrotransfer.
7. Electrotransfer to nitrocellulose/PVDF membrane.

Membrane Blocking and Antibody Incubations

a. Blocking

1. (Optional) After transfer, wash the transferred membrane with TBS for 5 min at room temperature.
2. Incubate the membrane in the blocking buffer for 1 hr at room temperature.
3. Wash three times for 5 min each with TBST.

b. Antibodies Incubation

1. Incubate membrane and primary antibody (at the appropriate dilution and diluent recommended) in a primary antibody dilution buffer with gentle agitation overnight at 4°C.
2. Wash three times for 5 min each with TBST.
3. Incubate membrane with an appropriate second antibodydissolved in the blocking buffer with gentle agitation for 1 hr at room temperature.
4. Wash three times for 5 min each with TBST.
5. Proceed with detection.

Detection of Proteins

1. After antibodies incubation, Wash membrane three times for 5 minutes in TBST.
2. PrepareECL Reagent (or other chromogenic agents/substrate according to your second antibody). Mix well.
3. Incubate substrate with membrane for 1 minute, remove excess solution (membrane remains wet), wrap in plastic and expose to X-ray film.

IHC

Immunohistochemistry (Paraffin)

Deparaffinization/Rehydration

NOTE: Do not allow slides to dry at any time during this procedure.

1. Deparaffinize/hydrate sections:

1. Incubate sections in three washes of xylene for 5 min each.
2. Incubate sections in two washes of 100% ethanol for 10 min each.
3. Incubate sections in two washes of 95% ethanol for 10 min each.

2. Wash sections two times in dH2O for 5 min each.

Antigen retrieval

For Citrate: Heat slides in a microwave submersed in 1X citrate unmasking solution until boiling is initiated; continue with 10 min at a sub-boiling temperature (95°-98°C). Cool slides on bench top for 30 min.

Staining

1. Wash sections in dH2O three times for 5 min each.
2. Incubate sections in 3% hydrogen peroxide for 10 min.
3. Wash sections in dH2O two times for 5 min each.
4. Wash sections in wash buffer for 5 min.
5. Block each section with 100–400 µl of blocking solution for 1 hr at room temperature.
6. Remove blocking solution and add 100–400 µl primary antibody diluent in to each section. Incubate overnight at 4°C.
7. Remove antibody solution and wash sections with wash buffer three times for 5 min each.
8. Cover section with 1–3 drops HRPas needed. Incubate in a humidified chamber for 30 min at room temperature.
9. Wash sections three times with wash buffer for 5 min each.
10. Add DAB Chromogen Concentrate to DAB Diluent and mix well before use.
11. Apply 100–400 µl DAB to each section and monitor closely. 1–10 min generally provides an acceptable staining intensity.
12. Immerse slides in dH2O.
13. If desired, counterstain sections with hematoxylin.
14. Wash sections in dH2O two times for 5 min each.
15. Dehydrate sections:
1. Incubate sections in 95% ethanol two times for 10 sec each.
2. Repeat in 100% ethanol, incubating sections two times for 10 sec each.
3. Repeat in xylene, incubating sections two times for 10 sec each.
16. Mount sections with coverslips and mounting medium.

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