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LIN28B Antibody (Center)

Purified Rabbit Polyclonal Antibody (Pab)

     
  • IHC-P - LIN28B Antibody (Center) AP1485c
    AP1485c staining LIN28B in human testis tissue sections by Immunohistochemistry (IHC-P - paraformaldehyde-fixed, paraffin-embedded sections). Tissue was fixed with formaldehyde and blocked with 3% BSA for 0. 5 hour at room temperature; antigen retrieval was by heat mediation with a citrate buffer (pH6). Samples were incubated with primary antibody (1/25) for 1 hours at 37°C. A undiluted biotinylated goat polyvalent antibody was used as the secondary antibody.
  • IHC-P - LIN28B Antibody (Center) AP1485c
    AP1485c staining LIN28B in human testis tissue sections by Immunohistochemistry (IHC-P - paraformaldehyde-fixed, paraffin-embedded sections). Tissue was fixed with formaldehyde and blocked with 3% BSA for 0. 5 hour at room temperature; antigen retrieval was by heat mediation with a citrate buffer (pH6). Samples were incubated with primary antibody (1/25) for 1 hours at 37°C. A undiluted biotinylated goat polyvalent antibody was used as the secondary antibody.
  • WB - LIN28B Antibody (Center) AP1485c
    Anti-LIN28B Antibody (Center) at 1:2000 dilution + NCCIT whole cell lysate Lysates/proteins at 20 µg per lane. Secondary Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated at 1/10000 dilution. Predicted band size : 27 kDa Blocking/Dilution buffer: 5% NFDM/TBST.
  • WB - LIN28B Antibody (Center) AP1485c
    All lanes : Anti-LIN28B Antibody (Center) at 1:2000 dilution Lane 1: Hela whole cell lysate Lane 2: K562 whole cell lysate Lane 3: mouse testis lysate Lane 4: NCCIT whole cell lysate Lysates/proteins at 20 µg per lane. Secondary Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated at 1/10000 dilution. Predicted band size : 27 kDa Blocking/Dilution buffer: 5% NFDM/TBST.
  • WB - LIN28B Antibody (Center) AP1485c
    All lanes : Anti-LIN28B Antibody (Center) at 1:1000 dilution Lane 1: HepG2 whole cell lysates Lane 2: K562 whole cell lysates Lane 3: NCCIT whole cell lysates Lysates/proteins at 20 µg per lane. Secondary Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated at 1/10000 dilution. Predicted band size : 27 kDa Blocking/Dilution buffer: 5% NFDM/TBST.
  • WB - LIN28B Antibody (Center) AP1485c
    All lanes : Anti-LIN28B Antibody (Center) at 1:1000 dilution Lane 1: HepG2 whole cell lysates Lane 2: K562 whole cell lysates Lysates/proteins at 20 µg per lane. Secondary Goat Anti-Rabbit IgG, (H+L), Peroxidase conjugated at 1/10000 dilution. Predicted band size : 27 kDa Blocking/Dilution buffer: 5% NFDM/TBST.
  • WB - LIN28B Antibody (Center) AP1485c
    Western blot analysis of anti-LIN28B Pab (Cat.#AP1485c) in K562 cell line lysates (35ug/lane). LIN28B(arrow) was detected using the purified Pab.
  • IHC-P - LIN28B Antibody (Center) AP1485c
    Formalin-fixed and paraffin-embedded human Spleen tissue reacted with LIN28B antibody (Center) (Cat.#AP1485c), which was peroxidase-conjugated to the secondary antibody, followed by AEC staining. This data demonstrates the use of this antibody for immunohistochemistry; clinical relevance has not been evaluated.
  • FC - LIN28B Antibody (Center) AP1485c
    Flow cytometric analysis of HL-60 cells using LIN28B Antibody (Center)(bottom histogram) compared to a negative control cell (top histogram). FITC-conjugated goat-anti-rabbit secondary antibodies were used for the analysis.
  • IF - LIN28B Antibody (Center) AP1485c
    Confocal immunofluorescent analysis of LIN28B Antibody (Center) (Cat#AP1485c) with HepG2 cell followed by Alexa Fluor 488-conjugated goat anti-rabbit lgG (green). DAPI was used to stain the cell nuclear (blue).
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Product Information
Application
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • E=ELISA
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
WB, IHC-P, IF, FC, E
Primary Accession Q6ZN17
Other Accession Q45KJ6
Reactivity Human
Predicted Mouse
Host Rabbit
Clonality Polyclonal
Isotype Rabbit IgG
Calculated MW 27084 Da
Antigen Region 95-128 aa
Additional Information
Gene ID 389421
Other Names Protein lin-28 homolog B, Lin-28B, LIN28B, CSDD2
Target/Specificity This LIN28B antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 95-128 amino acids of human LIN28B.
Dilution IHC-P~~1:10~50
WB~~1:1000
FC~~1:10~50
IF~~1:10~50
Format Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is purified through a protein A column, followed by peptide affinity purification.
StorageMaintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
PrecautionsLIN28B Antibody (Center) is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name LIN28B
Synonyms CSDD2
Function Suppressor of microRNA (miRNA) biogenesis, including that of let-7 and possibly of miR107, miR-143 and miR-200c. Binds primary let-7 transcripts (pri-let-7), including pri-let-7g and pri-let-7a-1, and sequester them in the nucleolus, away from the microprocessor complex, hence preventing their processing into mature miRNA (PubMed:22118463). Does not act on pri-miR21 (PubMed:22118463). The repression of let-7 expression is required for normal development and contributes to maintain the pluripotent state of embryonic stem cells by preventing let-7-mediated differentiation. When overexpressed, recruits ZCCHC11/TUT4 uridylyltransferase to pre-let-7 transcripts, leading to their terminal uridylation and degradation (PubMed:19703396). This activity might not be relevant in vivo, as LIN28B-mediated inhibition of let-7 miRNA maturation appears to be ZCCHC11- independent (PubMed:22118463). Interaction with target pre-miRNAs occurs via an 5'-GGAG-3' motif in the pre-miRNA terminal loop. Mediates MYC-induced let-7 repression (By similarity). When overexpressed, isoform 1 stimulates growth of the breast adenocarcinoma cell line MCF-7. Isoform 2 has no effect on cell growth.
Cellular Location Nucleus. Nucleus, nucleolus. Cytoplasm. Note=Predominantly nucleolar (PubMed:22118463). In Huh7 cells, predominantly cytoplasmic, with only a subset of cells exhibiting strong nuclear staining; however, the specificity of the polyclonal antibody used in these experiments has not been not documented (PubMed:16971064)
Tissue Location Expressed at high levels in the placenta and, at mucher lower, in testis and fetal liver (PubMed:16971064) Isoform 1 is only detected in placenta and in moderately and poorly differentiated hepatocellular carcinoma cells (at protein level). Isoform 2 is detected in fetal liver, non-tumor liver tissues, as well as well-differentiated tumor tissues (at protein level). Tends to be up-regulated in triple-negative (ER-,PR-,HER2-) breast tumors, as well as in liver, ovarian, and thyroid carcinomas (PubMed:22118463)
Research Areas
Citations ( 0 )

Background

Lin-28 homolog B (LIN28B) is overexpressed in hepatocellular carcinoma. The heterochronic gene lin-28 is a key regulator of developmental timing in the nematode Caenorhabditis elegans. Similar with lin-28 proteins, LIN28B conserves a cold shock domain and a pair of CCHC zinc finger domains. Phylogenetic analysis suggests that they might arise as a result of duplication from an ancestral gene. Overexpression of LIN28B was noted in most HCC cell lines and clinical samples. A short LIN28B isoform was also identified in non-tumor liver tissue and fetal liver. Although predominantly localized in the cytoplasm, LIN28B protein shows cell cycle-dependent nuclear translocation in Huh7 cells. Induced expression of exogenous LIN28B in a tet-off cell line promoted cancer cell proliferation.

References

Guo,Y., Gene 384, 51-61 (2006)

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$ 295.00
$ 99.00
Cat# AP1485c
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(40 western blots)
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