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TMD8
Tissue
骨髓
Disease
活化型 B 細胞型彌漫性大 B 細胞淋巴瘤
Synonyms
TMD-8, Tokyo Medical and Dental university 8

Documents

TMD8

Cell line · Product number 305729

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 chara...

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  • CoA
1

01General information

Description

TMD8 細胞系是一種代表活化 B 細胞樣(ABC)亞型的人類彌漫性大 B 細胞淋巴瘤(DLBCL)模型。此亞型的特徵在於 NF-κB 通路的持續活化,而這對細胞存活至關重要。 TMD8 雖表現出野生型 CARD11,卻仍維持強烈的 NF-κB 活性,這表明其對慢性活化 B 細胞受體(BCR)訊號傳導具有依賴性。 實驗證據支持這種依賴性:敲低 BCR 通路組分(包括 BTK、CD79A、CD79B 和 IgM)會導致 TMD8 細胞死亡。 此外,TMD8 在 CD79B 的 ITAM 結構域中攜帶 Y196H 突變,這是一種常見於 ABC-DLBCL 的突變,能增強細胞表面 BCR 的表達並減弱來自 Lyn 激酶的負回饋,從而促進持續的訊號傳導活性。

當 TMD8 細胞高表達 BCL-2 蛋白時,亦會對透過 venetoclax 抑制 BCL-2 展現顯著敏感性。然而,此類細胞對 venetoclax 的抗藥性可能由 PI3K/AKT 路徑的活化所介導,特別是在長期藥物暴露後。 此種抗藥性機制涉及 PTEN 表達下降及 AKT 磷酸化增加。對維內托克拉克產生獲得性抗藥性的 TMD8 細胞,對藥理學性的 PI3K/AKT 路徑抑制呈現較高的敏感性,使其成為研究針對侵襲性 B 細胞淋巴瘤抗藥性之治療組合的合適模型。

Tissue
骨髓
Disease
活化型 B 細胞型彌漫性大 B 細胞淋巴瘤
Synonyms
  • TMD-8
  • Tokyo Medical and Dental university 8

02Classification

Organism
Human
Sex
Male
Growth properties
Suspension
Biosafety level
1

03Characteristics

Doubling time
約 30 小時

04Identifiers

Citation
TMD8(Cytion 型號 305729)
NCBI TaxID
9606
Cellosaurus
CVCL_A442

05Expression and susceptibility

Mutational profile
突變: CD79B,單一突變,p.Tyr196His (c.586T>C),雜合子,M 歲;D88,單一突變,p.Leu252Pro (c.755T>C) (L265P),雜合子

06Handling and culture

Culture medium
RPMI 1640,含 2.0 mM 穩定谷氨醯胺,含 2.0 g/L NaHCO₃(Cytion 產品編號 820700a)
Incubation atmosphere

37°C,5% CO₂,加濕環境。

Supplements
在培養基中加入 10% 的胎牛血清(FBS)
Thawing and culturing
  1. Confirm that the vial remains deeply frozen upon delivery, as cells are shipped on dry ice to maintain optimal temperatures during transit.

  2. Upon receipt, either store the cryovial immediately at temperatures below -150°C to ensure the preservation of cellular integrity, or proceed to step 3 if immediate culturing is required.

  3. For immediate culturing, swiftly thaw the vial by immersing it in a 37°C water bath with clean water and an antimicrobial agent, agitating gently for 40-60 seconds until a small ice clump remains.

  4. Perform all subsequent steps under sterile conditions in a flow hood, disinfecting the cryovial with 70% ethanol before opening.

  5. Carefully open the disinfected vial and transfer the cell suspension into a 15 ml centrifuge tube containing 8 ml of room-temperature culture medium, mixing gently.

  6. Centrifuge the mixture at 300 x g for 3 minutes to separate the cells and carefully discard the supernatant containing residual freezing medium.

  7. Gently resuspend the cell pellet in 10 ml of fresh culture medium. For adherent cells, divide the suspension between two T25 culture flasks; for suspension cultures, transfer all the medium into one T25 flask to promote effective cell interaction and growth.

  8. Adhere to established subculture protocols for continued growth and maintenance of the cell line, ensuring reliable experimental outcomes.

07Quality control and cryopreservation

Sterility

透過基於 PCR 的檢測及基於發光原理的支原體檢測方法,排除支原體污染的可能性。

為確保無細菌、真菌或酵母菌污染,每日均會對細胞培養物進行目視檢查。

Freeze medium
作為冷凍保存培養基,我們使用完全生長培養基(含 FBS)+ 10% DMSO 以確保解凍後的存活率,或使用 CM-1 (Cytion 型號 800100),該培養基含有經優化的滲透保護劑和代謝穩定劑,可提升細胞恢復率並減輕冷凍誘導的壓力。
Storage conditions

若需長期保存,請將試管置於溫度約為 −150 至 −196 °C 的氣相液氮中。僅在轉移至液氮之前,可將試管暫時存放於 −80 °C 環境中,作為短期過渡步驟。

Shipping conditions

冷凍保存的細胞系會以乾冰冷藏,並裝於經驗證的隔熱包裝中,包裝內含有足夠的冷媒,以確保在運輸過程中溫度維持在約 −78 °C。收到貨物後,請立即檢查容器,並盡快將試管轉移至適當的儲存場所。

08Donor

Donor age
62年
Ethnicity
日文