Revision 4

#9864Store at -20C

1 Kit

(6 x 20 microliters)

Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Product Includes Product # Quantity Mol. Wt Isotype/Source
mTOR (7C10) Rabbit mAb 2983 20 µl 289 kDa Rabbit IgG
Phospho-mTOR (Ser2448) (D9C2) XP® Rabbit mAb 5536 20 µl 289 kDa Rabbit IgG
Phospho-Raptor (Ser792) Antibody 2083 20 µl 150 kDa Rabbit 
PRAS40 (D23C7) XP® Rabbit mAb 2691 20 µl 40 kDa Rabbit IgG
Phospho-PRAS40 (Thr246) (C77D7) Rabbit mAb 2997 20 µl 40 kDa Rabbit IgG
RagC (D8H5) Rabbit mAb 9480 20 µl 50 kDa Rabbit IgG
Anti-rabbit IgG, HRP-linked Antibody 7074 100 µl Goat 

Please visit cellsignal.com for individual component applications, species cross-reactivity, dilutions, protocols, and additional product information.

Description

The mTOR Regulation Sampler Kit provides an economical means to evaluate the regulation of mTOR signaling by such proteins as phosphorylated Raptor, RagC and PRAS40. The kit contains enough primary and secondary antibodies to perform two Western blot experiments per primary antibody.

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

Background

The mammalian target of rapamycin (mTOR, FRAP, RAFT) is a Ser/Thr protein kinase (1-3) that functions as an ATP and amino acid sensor to balance nutrient availability and cell growth (4,5). When sufficient nutrients are available, mTOR responds to a phosphatidic acid-mediated signal to transmit a positive signal to p70 S6 kinase and participate in the inactivation of the eIF4E inhibitor, 4E-BP1 (6). These events result in the translation of specific mRNA subpopulations. mTOR is phosphorylated at Ser2448 via the PI3 kinase/Akt signaling pathway and autophosphorylated at Ser2481 (7,8). mTOR plays a key role in cell growth and homeostasis and may be abnormally regulated in tumors. For these reasons, mTOR is currently under investigation as a potential target for anti-cancer therapy (9).
The regulatory associated protein of mTOR (Raptor) was identified as an mTOR binding partner that mediates mTOR signaling to downstream targets (10,11). Raptor binds to mTOR substrates, including 4E-BP1 and p70 S6 kinase, through their TOR signaling (TOS) motifs and is required for mTOR-mediated phosphorylation of these substrates (12,13). PRAS40 interacts with raptor in insulin-deprived cells and inhibits the activation of the mTORC1 pathway. Phosphorylation of PRAS40 by Akt at Thr246 relieves PRAS40 inhibition of mTORC1 (14). Recently raptor has been identified as a direct substrate of the AMP-activated protein kinase (AMPK) (15). AMPK phosphorylates raptor on Ser722/Ser792 (15). This phosphorylation is essential for inhibition of the raptor-containing mTOR complex 1 (mTORC1) and induces cell cycle arrest when cells are stressed for energy (15). These findings suggest that raptor is a critical switch that correlates cell cycle progression with energy status. The activity of mTORC1 kinase complex is modulated by energy levels, growth factors and amino acids (16,17). Recent studies found that RagA, RagB, RagC and RagD, the four related GTPases, interact with raptor in the mTORC1 complex (18,19). These interactions are both necessary and sufficient for mTORC1 activation in response to amino acid signals (18,19).

  1. Sabers, C.J. et al. (1995) J Biol Chem 270, 815-22.
  2. Brown, E.J. et al. (1994) Nature 369, 756-8.
  3. Sabatini, D.M. et al. (1994) Cell 78, 35-43.
  4. Gingras, A.C. et al. (2001) Genes Dev 15, 807-26.
  5. Dennis, P.B. et al. (2001) Science 294, 1102-5.
  6. Fang, Y. et al. (2001) Science 294, 1942-5.
  7. Navé, B.T. et al. (1999) Biochem J 344 Pt 2, 427-31.
  8. Peterson, R.T. et al. (2000) J Biol Chem 275, 7416-23.
  9. Huang, S. and Houghton, P.J. (2003) Curr Opin Pharmacol 3, 371-7.
  10. Hara, K. et al. (2002) Cell 110, 177-89.
  11. Kim, D.H. et al. (2002) Cell 110, 163-75.
  12. Beugnet, A. et al. (2003) J Biol Chem 278, 40717-22.
  13. Nojima, H. et al. (2003) J Biol Chem 278, 15461-4.
  14. Vander Haar, E. et al. (2007) Nat Cell Biol 9, 316-23.
  15. Gwinn, D.M. et al. (2008) Mol Cell 30, 214-26.
  16. Hay, N. and Sonenberg, N. (2004) Genes Dev 18, 1926-45.
  17. Wullschleger, S. et al. (2006) Cell 124, 471-84.
  18. Sancak, Y. et al. (2008) Science 320, 1496-501.
  19. Kim, E. et al. (2008) Nat Cell Biol 10, 935-45.

Background References

    Trademarks and Patents

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    Revision 4
    #9864

    mTOR Regulation Antibody Sampler Kit

    mTOR Regulation Antibody Sampler Kit: Image 1 Expand Image
    Simple Western analysis of lysates (0.1 mg/mL) from MCF-7 cells using PRAS40 (D23C7) XP® Rabbit mAb. The virtual lane view (left) shows the target band (as indicated) at 1:50 and 1:250 dilutions of primary antibody. The corresponding electropherogram view (right) plots chemiluminescence by molecular weight along the capillary at 1:50 (blue line) and 1:250 (green line) dilutions of primary antibody. This experiment was performed under reducing conditions on the Jess ​​​​​​​Simple Western instrument from ProteinSimple, a BioTechne brand, using the 12-230 kDa separation module.
    mTOR Regulation Antibody Sampler Kit: Image 2 Expand Image
    Western blot analysis of extracts from various cell lines using mTOR (7C10) Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 3 Expand Image
    Simple Western™ analysis of lysates (0.1 mg/mL) from Hela cells using mTOR (7C10) Rabbit mAb #2983. The virtual lane view (left) shows a single target band (as indicated) at 1:10 and 1:50 dilutions of primary antibody. The corresponding electropherogram view (right) plots chemiluminescence by molecular weight along the capillary at 1:10 (blue line) and 1:50 (green line) dilutions of primary antibody. This experiment was performed under reducing conditions on the Jess™ Simple Western instrument from ProteinSimple, a BioTechne brand, using the 66-440 kDa separation module.
    mTOR Regulation Antibody Sampler Kit: Image 4 Expand Image
    Simple Western™ analysis of lysates (1.0 mg/mL) from serum-starved MCF-7 cells treated with human IGF-1 (100 ng/mL, 10 min) using Phospho-PRAS40 (Thr246) (C77D7) Rabbit mAb #2997. The virtual lane view (left) shows a single target band (as indicated) at 1:10 and 1:50 dilutions of primary antibody. The corresponding electropherogram view (right) plots chemiluminescence by molecular weight along the capillary at 1:10 (blue line) and 1:50 (green line) dilutions of primary antibody. This experiment was performed under reducing conditions on the Jess™ Simple Western instrument from ProteinSimple, a BioTechne brand, using the 12-230 kDa separation module.
    mTOR Regulation Antibody Sampler Kit: Image 5 Expand Image
    Simple WesternTM analysis of lysates (0.1 mg/mL) from MCF-7 cells treated with insulin (100nM, 10 minutes) using Phospho-mTOR (Ser2448) (D9C2) XP® Rabbit mAb #5536. The virtual lane view (left) shows a single target band (as indicated) at 1:10 and 1:50 dilutions of primary antibody. The corresponding electropherogram view (right) plots chemiluminescence by molecular weight along the capillary at 1:10 (blue line) and 1:50 (green line) dilutions of primary antibody. This experiment was performed under reducing conditions on the JessTM Simple Western instrument from ProteinSimple, a BioTechne brand, using the 66-440 kDa separation module.
    mTOR Regulation Antibody Sampler Kit: Image 6 Expand Image
    Western blot analysis of C2C12 or 293 cells, untreated or treated with AICAR (0.5 mM for 30 minutes) or oligomycin (0.5 μM for 30 minutes), using Phospho-Raptor (Ser792) Antibody (upper and lower left ) or Raptor Antibody #2280 (upper and lower right).

    *Cross-reacting bands at 200 kDa.

    mTOR Regulation Antibody Sampler Kit: Image 7 Expand Image
    Western blot analysis of extracts from various cell types using PRAS40 (D23C7) XP® Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 8 Expand Image
    Immunoprecipitation of mTOR protein from MCF-7 cell extracts. Lane 1 is 10% input, lane 2 is Rabbit (DA1E) mAb IgG XP® Isotype Control #3900, and lane 3 is mTOR (7C10) Rabbit mAb. Western blot analysis was performed using mTOR (7C10) Rabbit mAb. Anti-rabbit IgG, HRP-linked Antibody #7074 was used as the secondary antibody.
    mTOR Regulation Antibody Sampler Kit: Image 9 Expand Image
    Western blot analysis of extracts from serum starved H3255, Mkn45 and NIH/3T3 cells, untreated or treated with either Gefitinib (1 μM, 3 hours), Su11274 (1 μM, 3 hours) or insulin (150 nM, 15 minutes), using Phospho-PRAS40 (Thr246) (C77D7) Rabbit mAb (upper) or PRAS40 (D23C7) Rabbit mAb #2691 (lower).
    mTOR Regulation Antibody Sampler Kit: Image 10 Expand Image
    Western blot analysis of extracts from serum-starved NIH/3T3 cells, untreated or insulin-treated (150 nM, 5 minutes), alone or in combination with λ-phosphatase, using Phospho-mTOR (Ser2448) (D9C2) XP® Rabbit mAb (upper) or mTOR (7C10) Rabbit mAb #2983.
    mTOR Regulation Antibody Sampler Kit: Image 11 Expand Image
    After the primary antibody is bound to the target protein, a complex with HRP-linked secondary antibody is formed. The LumiGLO® is added and emits light during enzyme catalyzed decomposition.
    mTOR Regulation Antibody Sampler Kit: Image 12 Expand Image
    Western blot analysis of extracts from various cell lines using RagC (D8H5) Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 13 Expand Image
    Western blot analysis of wild-type (WT) and AMPKα1 and α2 knockout (KO) mouse embryonic fibroblasts (MEFs), untreated or treated with AICAR (2 mM for 1 hour), using Phospho-Raptor (Ser792) Antibody (upper) or Raptor Antibody #4978 (lower). (Image provided by Dr. Reuben Shaw, Salk Institute for Biological Studies).

    *Cross-reacting bands at 60, 70 and 240 kDa

    mTOR Regulation Antibody Sampler Kit: Image 14 Expand Image
    Immunohistochemical analysis of paraffin-embedded human breast carcinoma using PRAS40 (D23C7) XP® Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 15 Expand Image
    Western blot analysis of extracts from HeLa cells, transfected with 100 nM SignalSilence® Control siRNA (Fluorescein Conjugate) #6201 (-) or SignalSilence® mTOR siRNA II (+), using mTOR (7C10) Rabbit mAb #2983 and α-Tubulin (11H10) Rabbit mAb #2125. mTOR (7C10) Rabbit mAb confirms silencing of mTOR expression, while the α-Tubulin (11H10) Rabbit mAb is used to control for loading and specificity of mTOR siRNA.
    mTOR Regulation Antibody Sampler Kit: Image 16 Expand Image
    Western blot analysis of extracts from serum starved HeLa cells, untreated or treated with insulin (100 nM, 5 minutes) or with insulin and λ phosphatase, using Phospho-PRAS40 (Thr246) (C77D7) Rabbit mAb (upper) or PRAS40 Antibody #2610 (lower).
    mTOR Regulation Antibody Sampler Kit: Image 17 Expand Image
    Confocal immunofluorescent analysis of HeLa cells, rapamycin-treated (#9904, 10 nM for 2 hours, left), insulin-treated (150 nM for 6 minutes, middle) or insulin- and λ-phosphatase-treated (right), using Phospho-mTOR (Ser2448) (D9C2) XP® Rabbit mAb (green). Actin filaments were labeled with DY-554 phalloidin. Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
    mTOR Regulation Antibody Sampler Kit: Image 18 Expand Image
    Confocal immunofluorescent analysis of HeLa cells using RagC (D8H5) Rabbit mAb (green). Actin filaments have been labeled with DY-554 phalloidin (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
    mTOR Regulation Antibody Sampler Kit: Image 19 Expand Image
    Immunohistochemical analysis of paraffin-embedded human breast carcinoma, showing cytoplasmic localization using mTOR (7C10) Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 20 Expand Image
    Immunohistochemical analysis of paraffin-embedded human breast carcinoma using Phospho-PRAS40 (Thr246) (C77D7) Rabbit mAb in the presence of control peptide (left) or antigen specific peptide (right).
    mTOR Regulation Antibody Sampler Kit: Image 21 Expand Image
    Flow cytometric analysis of HeLa cells using RagC (D8H5) Rabbit mAb (solid line) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed line). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.
    mTOR Regulation Antibody Sampler Kit: Image 22 Expand Image
    Immunohistochemical analysis of paraffin-embedded human lung carcinoma, using mTOR (7C10) Rabbit mAb in the presence of control peptide (left) or mTOR Blocking Peptide #1072 (right).
    mTOR Regulation Antibody Sampler Kit: Image 23 Expand Image
    Immunohistochemical analysis of paraffin-embedded human breast carcinoma, control (left) or λ phosphatase-treated (right), using Phospho-PRAS40 (Thr246) (C77D7) Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 24 Expand Image
    Immunohistochemical analysis of paraffin-embedded mouse brain using mTOR (7C10) Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 25 Expand Image
    Immunohistochemical analysis of paraffin-embedded metastatic SKOV-3 tumor in mouse lung using Phospho-PRAS40 (Thr246) (C77D7) Rabbit mAb.
    mTOR Regulation Antibody Sampler Kit: Image 26 Expand Image
    Confocal immunofluorescent analysis of mouse embryonic fibroblast (MEF) cells using mTOR (7C10) Rabbit mAb (green). Actin filaments were labeled with DY-554 phalloidin (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
    mTOR Regulation Antibody Sampler Kit: Image 27 Expand Image
    Flow cytometric analysis of A549 cells using mTOR (7C10) Rabbit mAb (solid line) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed line). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.