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C4-2
Tissue
转移性
Disease
前列腺癌
Synonyms
LNCaP-C4-2, LNCaP subline C4-2, C4-2, C42, Sp 2817

Documents

C4-2

Cell line · Product number 305752

The C4-2 cell line is an androgen-independent human prostate cancer model derived from the parental LNCaP cell line. It was established through a stepwise...

US$800.00excl. tax and shipping
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Lot
Recommended (freshest lot)
  • CoA
1

01General information

Description

C4-2 细胞系是一种雄激素依赖性人类前列腺癌模型,源自亲本 LNCaP 细胞系。它是通过将 LNCaP 细胞与人骨基质细胞(MS 细胞)共同注射到阉割的免疫缺陷小鼠体内,从而产生雄激素不敏感肿瘤的体内逐步筛选过程建立的。C4-2亚系是在阉割宿主体内进一步传代后从C4变体中特异性衍生出来的,它无需基质支持就能在雄激素缺乏的条件下保持生长和形成肿瘤的能力。

C4-2细胞保持了前列腺特异性抗原(PSA)的产生和雄激素受体(AR)的表达,包括从LNCaP继承的特征性T877A AR点突变,但与亲本品系相比,对雄激素的反应性有所降低。LNCaP细胞的生长需要雄激素,而C4-2细胞则能在雄激素缺乏的环境中增殖,并继续表达PSA和AR调控基因,使其成为阉割耐药前列腺癌(CRPC)的稳健模型。在体外,C4-2 细胞在标准培养条件下比 LNCaP 生长得更快,在体内也表现出更强的致瘤性。将 C4-2 细胞皮下注射到免疫功能低下的小鼠体内时,它们很容易形成肿瘤,这与 LNCaP 细胞较慢或不太稳定的致瘤潜能形成鲜明对比。

C4-2模型已被广泛用于研究雄激素剥夺疗法(ADT)的抗性机制、体内雄激素代谢的作用以及CRPC进展的分子途径。它保留了前列腺特异性膜抗原(PSMA)的表达,但水平低于LNCaP,并对雄激素刺激和抗雄激素疗法表现出独特的反应。这些特性使 C4-2 成为评估针对晚期前列腺癌的新疗法的基础模型。

Tissue
转移性
Disease
前列腺癌
Synonyms
  • LNCaP-C4-2
  • LNCaP subline C4-2
  • C4-2
  • C42
  • Sp 2817

02Classification

Organism
Human
Sex
Male
Growth properties
Adherent
Biosafety level
1

03Characteristics

Morphology
上皮样

04Identifiers

Citation
C4-2(Cytion 目录编号 305752)
NCBI TaxID
9606
Cellosaurus
CVCL_4782

05Expression and susceptibility

Mutational profile
突变:AR,简单,p.Thr878Ala (c.2632A>G),半杂合子。突变,MEN1,简单,p.Tyr318Ter (c.954T>G)(p.Tyr313Ter,c.939T>A),杂合子(来自母细胞系)。突变,PIK3R1,简单,p.Arg639Ter (c.1915C>T)突变,PTEN,简单,p.Lys6Argfs*4 (c.17_18delAA),未指定(来自母细胞系)。

06Handling and culture

Culture medium
DMEM:Hams F12(4:1)
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中加入10%的HIA胎牛血清
Seeding density
2 - 3 × 10⁴ 个细胞/平方厘米
Fluid renewal
每周 2 至 3 次
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

使用基于 PCR 的检测方法和基于发光的支原体检测方法排除支原体污染。

为确保没有细菌、真菌或酵母菌污染,每天都要对细胞培养物进行目视检查。

Freeze medium
我们使用完全生长培养基(包括 FBS)+10% DMSO 或 CM-1(Cytion 商品目录编号 800100)作为冷冻保存培养基,以获得足够的解冻后存活率,CM-1(Cytion 商品目录编号 800100)含有优化的渗透保护剂和代谢稳定剂,可提高恢复能力并减少冷冻引起的应激。
Storage conditions

如需长期保存,可将样品瓶放入气相液氮中,温度约为 -150 至 -196 ℃。在-80 °C下保存只能作为转入液氮前的短暂过渡。

Shipping conditions

冷冻保存的细胞系用干冰装运,并用经过验证的隔热包装和足够的制冷剂在整个运输过程中保持约 -78 °C 的温度。收到货后,应立即检查容器,并立即将小瓶转移到适当的储藏室。

08Donor

Donor age
50 年
Ethnicity
高加索人