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TPEN | CAS No. 16858-02-9 | Buffers, Chelators and Reagents
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Description: Cell-permeable Zn2+ chelator; also inhibits RNA binding protein Lin28

Chemical Name: N,N,N',N'-Tetrakis(2-pyridylmethyl)ethylenediamine

Purity: ≥97%

Product Details
Citations (1)

Biological Activity

TPEN is a heavy metal chelator. Reacts with both Zn-proteome and Zn-metallothionein (MT) in LLC-PK1 cells; acts as an intracellular chelator of proteomic Zn2+. Activity decreases intracellular zinc levels, and induces apoptosis in HeLa and cultured human retinal pigment epithelium (RPE) cells. Also inhibits RNA binding protein Lin28 (IC50 = 2.5 μM). Cell permeable.

Technical Data

Soluble to 25 mM in DMSO and to 100 mM in ethanol
Store at +4°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.

Background References

  1. Role of cellular zinc in programmed cell death: temporal relationship between zinc depletion, activation of caspases, and cleavage of Sp family transcription factors.
    Chimienti et al.
    Biochem.Pharmacol., 2001;62:51
  2. Zinc binding ligands and cellular zinc trafficking: apo-metallothionein, glutathione, TPEN, proteomic zinc, and Zn-Sp1.
    Rana et al.
    J.Inorg.Biochem., 2008;102:489
  3. Validation of TPEN as a zinc chelator in fluorescence probing of calcium in cells with the indicator Fura-2.
    Matias et al.
    J.Fluoresc., 2010;20:377
  4. Depletion of intracellular zinc and copper with TPEN results in apoptosis of cultured human retinal pigment epithelial cells.
    Hyun et al.
    Invest.Opthalmol.Vis.Sci., 2001;42:460
  5. Small-molecule inhibitors disrupt let-7 oligouridylation and release the selective blockade of let-7 processing by LIN28.
    Wang et al.
    Cell Rep., 2018;23:3091

Product Datasheets

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Citation for TPEN

The citations listed below are publications that use Tocris products. Selected citations for TPEN include:

1 Citation: Showing 1 - 1

  1. Zinc ion flux during mammalian sperm capacitation.
    Authors: Kerns
    Nat Commun  2018;9(1):2061


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