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CMT-93
Tissue
直肠
Disease
小鼠直肠癌
Synonyms
CMT-93, CMT 93, C57 Mouse Tumor 93

Documents

CMT-93

Cell line · Product number 305761

The CMT93 cell line is a murine colorectal carcinoma model established from a chemically induced rectal tumor in a C57BL/ICRF mouse. The tumor originated ...

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01General information

Description

CMT93细胞系是一种由C57BL/ICRF小鼠经化学诱导形成的直肠肿瘤建立的小鼠结直肠癌模型。 该肿瘤源于接触强致癌物甲基偶氮甲醇乙酸酯(MAM乙酸酯)后形成。CMT93源自原始肿瘤的第四代体内移植,并通过选择性胰蛋白酶消化技术进行培养,以分离上皮细胞群并去除间充质杂质。经过反复传代和纯化,所得细胞系表现出稳定的上皮形态和生长模式。

体外培养中,CMT93细胞呈连贯的上皮团块生长,并表现出分化肠上皮细胞的典型特征。电子显微镜观察显示存在含糖蛋白丝的微绒毛、桥粒连接以及偶见的腺泡样结构,表明其部分保留了正常直肠上皮的结构。 这些细胞具有很强的粘附性,在1:2传代后约7天即可达到细胞融合。虽然主要为上皮细胞,但早期传代中存在混合细胞群,通过连续的选择性传代得以分离。该细胞系已维持了多次传代,并成功冷冻保存以供长期使用。

CMT93广泛应用于胃肠道癌症研究,特别是在探索结直肠癌发生机制、上皮-间质相互作用、免疫应答以及微生物-宿主相互作用的研究中。该细胞系还被用于短串联重复序列(STR)分型研究,以支持小鼠细胞系的种内鉴定,从而证实了其作为经验证的临床前研究模型的独特身份和价值。

Tissue
直肠
Disease
小鼠直肠癌
Synonyms
  • CMT-93
  • CMT 93
  • C57 Mouse Tumor 93

02Classification

Organism
Mouse
Sex
Male
Growth properties
Adherent
Biosafety level
1

03Characteristics

Cell type
上皮细胞

04Identifiers

Citation
CMT-93(Cytion 产品编号 305761)
NCBI TaxID
10090
Cellosaurus
CVCL_1986

05Handling and culture

Culture medium
DMEM,w:4.5 克/升葡萄糖,w:4 毫摩尔 L-谷氨酰胺,w:3.7 克/升 NaHCO3,w:1.0 毫摩尔丙酮酸钠(Cytion 编号 820300a)。
Incubation atmosphere

37°C, 5%CO2, 加湿环境。

Supplements
在培养基中添加 10% FBS
Dissociation reagent
Accutase
Seeding density
1至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.

06Quality 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。

07Donor

Breed / subspecies
C57BL/icrf
Donor age
1年7个月