TMD8 cell

SKU:BHC11101689
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Overview
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TMD8 cell is a cell line derived from Japanese (Male). It is commonly used as an in vitro model for 1 research. Growth characteristics: Suspension. Supplied as cryopreserved cells with accompanying batch CoA and quality-control documentation.

Species Human
Disease model Diffuse large B-cell lymphoma activated B-cell type
Growth Properties Suspension
Tissue Bone marrow
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Catalog no. Size
305729 1 cryovial
Available Options

This cell line is available in the U.S. For non-profit users, please sign and submit the Non-Profit Supply Agreement to orders@biohippo.com before placing an order. For commercial users, please complete the CLEAR Form before ordering, as additional usage fees may apply based on the intended use. For further details, please contact orders@biohippo.com. Products ship after the required agreement is completed; typical delivery is 2–3 business days. Products are shipped frozen on dry ice in cryotubes. Each cryotube typically contains 3 × 10^6 cells for adherent lines or 5 × 10^6 cells for suspension lines (refer to the batch CoA for details).

Field Specification
Mfr No 305729
Species Human
The TMD8 cell line is a human diffuse large B-cell lymphoma (DLBCL) model representative of the activated B-cell-like (ABC) subtype. This subtype is characterized by constitutive activation of the NF-κB pathway, which is essential for cell survival. TMD8 exhibits wild-type CARD11, yet maintains strong NF-κB activity, indicating a dependency on chronic active B-cell receptor (BCR) signaling. This dependency is supported by experimental evidence showing that knockdown of BCR pathway components—including BTK, CD79A, CD79B, and IgM—leads to cell death in TMD8 cells. Additionally, TMD8 harbors a Y196H mutation in the ITAM domain of CD79B, a mutation commonly found in ABC-DLBCLs that enhances surface BCR expression and attenuates negative feedback from Lyn kinase, thus promoting sustained signaling activity. TMD8 cells also demonstrate notable sensitivity to BCL-2 inhibition via venetoclax when expressing high levels of the BCL-2 protein. However, resistance to venetoclax in such cells can be mediated by activation of the PI3K/AKT pathway, particularly following prolonged drug exposure. This resistance mechanism involves a reduction in PTEN expression and increased AKT phosphorylation. TMD8 cells with acquired resistance to venetoclax exhibit heightened susceptibility to pharmacological PI3K/AKT pathway inhibition, making them a suitable model for studying therapeutic combinations aimed at overcoming resistance in aggressive B-cell lymphomas.

SKU:BHC11101689

Mutational profile: Mutation: CD79B, Simple, p.Tyr196His (c.586T>C), Heterozygous, M yearsD88, Simple, p.Leu252Pro (c.755T>C) (L265P), Heterozygous

  • cultureMedium: RPMI 1640, w: 2.0 mM stable Glutamine, w: 2.0 g/L NaHCO3 (Cytion article number 820700a)
  • supplements: Supplement the medium with 10% FBS
  • doublingTime: ~30 hours
  • freezeMedium: As a cryopreservation medium, use complete growth medium (including FBS) + 10% DMSO for adequate post-thaw viability, or CM-1 (Cytion catalog number 800100), which includes optimized osmoprotectants and metabolic stabilizers to enhance recovery and reduce cryo-induced stress.
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