Recombinant Anti-Thrombospondin 1 antibody [EPR22927-54] (ab267388)

The full-length TSP 1 (180kDa) and a 160-kDa band, likely to be an TSP 1 isoform or fragment, are observed.  

The molecular weight observed is consistent with what has been described in the literature (PMID:1426766, 27588705).

Blocking/Dilution buffer: 5% NFDM/TBST.

TSP 1 is a serum-responsive gene. Its express is elevated in quiescent 3T3 with serum addition.

The full-length TSP 1 (180kDa) and a 160-kDa band, likely to be an TSP 1 isoform or fragment, are observed.  

The molecular weight observed is consistent with what has been described in the literature (PMID:1426766, 27588705).

Blocking/Dilution buffer: 5% NFDM/TBST.

Thrombospondin 1 was immunoprecipitated from 0.35 mg mouse platelets whole cell lysate 10µg with ab267388 at 1/30 dilution (2µg in 0.35mg lysates). Western blot was performed on the immunoprecipitate using ab267388 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366) was used at 1/5000 dilution.

Lane 1: Mouse platelets whole cell lysate 10µg.

Lane 2: ab267388 IP in mouse platelets whole cell lysate.

Lane 3: Rabbit monoclonal IgG (ab172730) instead of ab267388 in mouse platelets whole cell lysate.

Blocking and dilution buffer and concentration: 5% NFDM/TBST.

Exposure time: 8 seconds.

Thrombospondin 1 was immunoprecipitated from 0.35 mg HUVEC (human umbilical vein endothelial cell) whole cell lysate 10µg with ab267388 at 1/30 dilution (2µg in 0.35mg lysates). Western blot was performed on the immunoprecipitate using ab267388 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366) was used at 1/5000 dilution.

Lane 1: HUVEC whole cell lysate 10µg.

Lane 2: ab267388 IP in HUVEC whole cell lysate.

Lane 3: Rabbit monoclonal IgG (ab172730) instead of ab267388 in HUVEC whole cell lysate.

Blocking and dilution buffer and concentration: 5% NFDM/TBST.

Exposure time: 8 seconds.

Immunohistochemical analysis of paraffin-embedded mouse spleen tissue labeling Thrombospondin 1 with ab267388 at 1/5000 dilution (0.1 µg/ml) followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP Polymer). Positive staining on the megakaryocytes and platelets in the mouse spleen is observed. The section was incubated with ab267388 for 10 mins at room temperature. The immunostaining staining was performed on a Leica Biosystems BOND^® RX instrument. Counterstained with hematoxylin.

Secondary antibody only control: Secondary antibody is a ready to use Goat Anti-Rabbit IgG H&L (HRP Polymer).

Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Immunohistochemical analysis of paraffin-embedded human bone marrow tissue labeling Thrombospondin 1 with ab267388 at 1/5000 dilution (0.1 µg/ml) followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP Polymer). Positive staining on the megakaryocytes in the human bone marrow (PMID: 28239144). The section was incubated with ab267388 for 10 mins at room temperature. The immunostaining staining was performed on a Leica Biosystems BOND^® RX instrument. Counterstained with hematoxylin.

Secondary antibody only control: Secondary antibody is a ready to use Goat Anti-Rabbit IgG H&L (HRP Polymer).

Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Immunohistochemical analysis of paraffin-embedded human spleen tissue labeling Thrombospondin 1 with ab267388 at 1/5000 dilution (0.1 µg/ml) followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP Polymer). Positive staining on the platelets in the human spleen (PMID: 28239144). The section was incubated with ab267388 for 10 mins at room temperature. The immunostaining staining was performed on a Leica Biosystems BOND^® RX instrument. Counterstained with hematoxylin.

Secondary antibody only control: Secondary antibody is a ready to use Goat Anti-Rabbit IgG H&L (HRP Polymer).

Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Immunofluorescent analysis of 100% methanol-fixed, permeabilized HUVEC (human umbilical vein endothelial cell) cells labeling Thrombospondin 1 with ab267388 at 1/100 dilution (5 µg/ml), followed by ab150077 AlexaFluor^®488 Goat anti-Rabbit secondary antibody at 1/1000 dilution (Green). Confocal image showing cytoplasmic staining in HUVEC cell line is observed. ab195889 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor^® 594) was used to counterstain tubulin at 1/200 dilution (Red). The nuclear counterstain was DAPI (Blue).

Secondary antibody only control: Secondary antibody is ab150077 AlexaFluor^®488 Goat anti-Rabbit secondary at 1/1000 dilution.

100% methanol fixation is recommended.

Intracellular flow cytometric analysis of 4% paraformaldehyde fixed 90% methanol permeabilized 3T3-L1 (mouse embryonic fibroblast) starved with 0.4% serum for 24h, then cultured with 15% serum for 6h (Red) / Untreated control (Green) cells labeling Thrombospondin 1 with ab267388 at 1/50 (Red) compared with a Rabbit monoclonal IgG (ab172730) / Black isotype control and an unlabeled control (cells without incubation with primary antibody and secondary antibody) (Blue). A Goat anti rabbit IgG (Alexa Fluor^® 488, ab150077) at 1/2000 dilution was used as the secondary antibody. 

Intracellular flow cytometric analysis of 4% paraformaldehyde fixed 90% methanol permeabilized HUVEC (human umbilical vein endothelial cell) cells labeling Thrombospondin 1 with ab267388 at 1/50 (Red) compared with a Rabbit monoclonal IgG (ab172730) / Black isotype control and an unlabeled control (cells without incubation with primary antibody and secondary antibody) (Blue). A Goat anti rabbit IgG (Alexa Fluor^® 488, ab150077) at 1/2000 dilution was used as the secondary antibody.