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HTR-8/SVneo
Tissue
滋养层、胎盘
Synonyms
HTR-8/SV neo, HTR-8/SV-neo, HTR8/SVneo, HTR8svn

Documents

HTR-8/SVneo

Cell line · Product number 305221

US$395.00excl. tax and shipping
In stock
Lot
Recommended (freshest lot)
  • CoA
1

01General information

Description

HTR-8/SVneo是一种人滋养层细胞系,来源于一胎胎盘的绒毛,特别是6-12周大的胚胎。通过转染编码猿猴病毒 40(SV40)大 T 抗原的基因,这些细胞得以永生,从而延长了它们的寿命,同时保持了绒毛外侵袭性滋养细胞的典型特征。该细胞系表达与绒毛外滋养细胞相关的几个关键标志物,包括胰岛素样生长因子 II(IGF-II)、NDOG-5、增殖细胞核抗原(PCNA)和一系列整合素(α1、α3、α5、αv 和 β1 亚基,以及 αvβ3/β5 维龙毒素受体)。它的巨噬细胞标志物 63/D3、内皮细胞标志物因子 VIII 以及 α6 和 β4 整合素亚基均为阴性,这证实了它的滋养层细胞系,并将其与巨噬细胞和内皮细胞等其他细胞类型区分开来。

HTR-8/SVneo细胞被广泛用作研究滋养细胞侵袭和胎盘生物学的模型,特别是上皮细胞向间质转化(EMT),EMT是胎盘发育过程中滋养细胞侵袭行为的关键。研究表明,这些细胞表现出上皮细胞和间质细胞的混合表型,在标准培养条件下能够发生 EMT。这种转变由 TGF-β 信号介导,TGF-β 信号可促进间质表型的形成,间质标志物(如波形蛋白)的上调和上皮标志物(如 E-cadherin)的下调就是证明。这使得 HTR-8/SVneo 成为研究滋养层细胞 EMT 的分子机制及其对正常胎盘发育和妊娠相关疾病的影响的宝贵体外模型。

研究进一步证明,HTR-8/SVneo 细胞可形成球体,主要表达上皮标志物。当这些球形细胞在二维培养基中再复制时,细胞表现出向间充质表型的转变,这表明 EMT 过程正在进行中。这种细胞系的独特性质,包括对 TGF-β 的反应性和上皮-间质混合性质,为了解滋养层细胞入侵的复杂细胞动态和胎盘发育调控提供了重要信息,为研究与妊娠有关的病症(如先兆子痫和宫内生长受限)提供了一个强大的平台。

Tissue
滋养层、胎盘
Synonyms
  • HTR-8/SV neo
  • HTR-8/SV-neo
  • HTR8/SVneo
  • HTR8svn

02Classification

Organism
Human
Sex
Unspecified
Growth properties
Adherent
GMO status
GMO-S1
GMO status details
GMO-S1: This human trophoblast cell line (HTR-8/SVneo) contains an SV40 T-Antigen construct introduced by transfection, enabling immortalization of primary trophoblast cells. The insert is stably integrated. This classification applies only within Germany and may differ elsewhere.
Biosafety level
1

03Characteristics

Morphology
上皮细胞和间充质样细胞的混合物

04Identifiers

Citation
HTR-8/SVneo(Cytion 目录号 305221)
NCBI TaxID
9606
Cellosaurus
CVCL_7162

05Expression and susceptibility

Viruses
Simian virus 40(用含有 SV40 早期区的 pSV3neo 质粒进行转染)

06Handling and culture

Culture medium
RPMI 1640,w:2.0 mM 稳定谷氨酰胺,w:2.0 g/L NaHCO3(Cytion 文章编号 820700a)。
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中添加 10% FBS
Dissociation reagent
Accutase
Subculturing
去除粘附细胞上的旧培养基,用不含钙和镁的 PBS 冲洗。T25 烧瓶用 3-5 毫升 PBS,T75 烧瓶用 5-10 毫升。然后用 Accutase 完全覆盖细胞,T25 烧瓶用 1-2 毫升,T75 烧瓶用 2.5 毫升。让细胞在室温下孵育 8-10 分钟,使其分离。孵育后,用 10 毫升培养基轻轻混合细胞使其重悬,然后用 300xg 离心 3 分钟。弃去上清液,用新鲜培养基重悬细胞,并将其转移到已装有新鲜培养基的新烧瓶中。
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
胎儿 6-12 周

10Product details

Composition table