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MMQ
Tissue
大腦
Disease
大鼠腦下垂體腫瘤

Documents

MMQ

Cell line · Product number 300498

The MMQ cell line is a clonal, prolactin-secreting cell line derived from the 7315a rat pituitary tumor. It exclusively secretes prolactin and expresses f...

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  • CoA
1

01General information

Description

MMQ 細胞系是一種源自 7315a 大鼠腦下垂體腫瘤的克隆性催乳素分泌細胞系。它專門分泌催乳素,並表達具有功能的多巴胺受體,具體而言為 D2 亞型。 多巴胺透過降低細胞內環磷酸腺苷(cAMP)濃度及鈣離子攝取,來抑制催乳素(PRL)的釋放,此機制已於多項實驗中得到證實。此抑制作用可被氟哌啶醇及百日咳毒素逆轉,這證實了GTP結合蛋白在多巴胺作用機制中的角色。 MMQ 細胞亦對生長抑素(SRIF)及血管活性腸多肽(VIP)有反應,但對 TRH、血管緊張素 II 或神經緊張素則無反應。

MMQ 細胞增殖迅速,在最佳條件下不到 24 小時即可增殖一倍。 當移植至大鼠體內時,MMQ 細胞會形成腫瘤,這些腫瘤會提高血清催乳素水平,但不會改變其他激素(如 ACTH)的水平。該細胞系是研究催乳素調控的重要模型,特別是與多巴胺及其對催乳素分泌的抑制機制相關的研究。

Tissue
大腦
Disease
大鼠腦下垂體腫瘤
Applications
3D 細胞培養

02Classification

Organism
Rat
Sex
Unspecified
Growth properties
Suspension
Biosafety level
1

03Characteristics

Morphology
球形細胞
Karyotype
大鼠超二倍體核型,多倍體率為 6% — 49-52<2n> — 自發性斷裂率極高

04Identifiers

Citation
MMQ(Cytion 型號 300498)
NCBI TaxID
10116
Cellosaurus
CVCL_2117

05Expression and susceptibility

Receptors expressed
多巴胺
Viruses
SMRV-
Products
催乳素

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 7.5% 馬血清及 2.5% 經熱滅活的胎牛血清
Subculturing
透過定期添加或更換培養基來維持培養。以 5 × 10⁵ 細胞/毫升的密度啟動培養,並將細胞濃度維持在 3 × 10⁵ 至 1 × 10⁶ 細胞/毫升的範圍內,以達到最佳生長效果。
Seeding density
> 2 × 105 個細胞/毫升
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
5 天