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1Department of Surgery, University of California, San Francisco - UCSF, 2Department of Pathology, Stanford University School of Medicine
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Tseng, W., Leong, X., Engleman, E. Orthotopic Mouse Model of Colorectal Cancer. J. Vis. Exp. (10), e484, doi:10.3791/484 (2007).
一,细胞制备
二。肿瘤的制备
三。鼠标的制备
注:在我们的实验室中,我们使用吸入异氟醚麻醉鼠标,另外,可以使用注射麻醉剂,以达到同样的效果
四。剖腹
五,暴露盲肠
六。盲肠壁细胞注射到
七。盲肠肿瘤移植到
注:除了注入盲肠壁细胞,另一种方法是移植到盲肠肿瘤
八。鼠标腹壁缝合和恢复
注:随着吸入麻醉药,这通常需要30秒
九。结果 - 原发灶和肝转移



(三)原发肿瘤 - 原位(A)和新生血管形成的证据(二); H&E染色,肿瘤局部侵袭性

肝转移 - 显示体外(四)
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虽然小鼠皮下肿瘤模型很容易的建立和监测,很显然,这种模式无法复制原大肠癌的解剖部位。由于在微环境的差异,皮肤下生长的大肠癌细胞已被证明改变自己的表型和几乎总是失败的进展和转移1,2。事实上,肿瘤对治疗的反应可以相差很大,取决于是否有癌细胞植入宫外孕(皮下)与原位位置3。结直肠癌原位小鼠模型,功能癌细胞生长在其自然位置,高保真复制人类疾病。这两种技术来建立这种模式具有独特的优势和劣势。注射到盲肠壁细胞悬液介绍先前已在体外环境中的大肠癌细胞,可以说是同质化。细胞可能具有减少文化中的几个段落后侵入或转移潜能。一块皮下肿瘤移植引入了一个更异构的人口已建立体内的癌症细胞。然而,肿瘤含有间质细胞,并经常有坏死的部分,这可能会影响这个模型的一致性(一菲德勒,个人通信,MD安德森)。从技术角度来看,我们的实验室已经发现,注射到盲肠壁细胞悬液是比较困难的,进行注射后腔内注射和泄漏的风险。有趣的是,直肠癌原位小鼠模型已被描述,不需要鼠标剖腹探查4。小鼠是麻醉和直肠黏膜脱垂数字压力。体积小的单细胞悬液,大肠癌细胞注入submucosally。小学,侵入性直肠癌的发展早在一个星期注射后在小鼠体内,但是,没有发展的小鼠肝转移和作者没有发表评论肺metasases的频率。
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旧金山加州大学外科部
雷蒙德沙欣,MD
| Name | Company | Catalog Number | Comments |
| Cell culture media and components | will vary depending on cell line used | ||
| Phosphate Buffered Saline | BioWhittaker | 17-512F | also sold by a number of other vendors |
| 15 mL centrifuge tubes, polypropylene | Corning | 430790 | |
| 6 well plates with lid | BD Biosciences | 353046 | |
| Iris forceps, straight, serrated tips | World Precision Instruments, Inc. | 15914 | best to have a pair of these instruments |
| Iris dissecting scissors, straight, sharp | World Precision Instruments, Inc. | 14393 | |
| Needle Holder (regular) | World Precision Instruments, Inc. | 14109 | |
| Needle Holder (Castroviejo) | World Precision Instruments, Inc. | 14137 | |
| Cidex Plus | World Precision Instruments, Inc. | 7364 | instruments should be autoclaved periodically, but may also be sterilized by soaking in Cidex |
| 6-0 or 7-0 suture | for cecum; courtesy of Department of Surgery, UCSF | ||
| 3-0 or 4-0 suture | for abd wall; courtesy of Department of Surgery, UCSF | ||
| Anesthetic machine / Isoflurane | J.A. Baulch and Associates | 3206 | also sold by a number of other vendors |
| Heating Pad, disposable, 6" x 6" | Prism Technologies | 20419 | |
| Tape, orange, 13 mm x 13 m | Fisher Scientific | 15901F | for restraining anesthetized mouse |
| Pro-Cord/Cordless Trimmer | Oster Professional Products | 78997-010 | for shaving mouse fur |
| Betadine | Fisher Scientific | 19-027132 | may also be purchased at any medical supply store |
| 2 x 2 gauze, 3-ply | Johnson & Johnson | 7635 | may also be purchased at any medical supply store |
| Sterile Field, Barrier, 16" x 29" | Johnson & Johnson | 0905 | may also be purchased at any medical supply store |
| Cotton tipped applicators, 6" | Fisher Scientific | 14-960-3Q | may also be purchased at any medical supply store |
| Syringe, 10 cc, Luer lock tip | BD Biosciences | 309604 | |
| Syringe, 1 cc, tuberculin, slip tip | BD Biosciences | 309602 | |
| 27 1/2 G needle | BD Biosciences | 305109 | |
| 30 G needle | BD Biosciences | 305106 |
1. Heijstek, M.W., Kraneburg, O., Borel Rinkes, I.H. Mouse models of colorectal cancer and liver metastases. Dig Surg. 22, 16-25 (2005).
2. Kobaek-Larsen, M., Thorup, I., Diederichsen, A., Fenger, C., Hoitinga, M.R. Review of colorectal cancer and its metastases in rodent models: comparative aspects with those in humans. Comp Med. 50, 16-26 (2000).
3. Wilmanns, C., Fan, D., O’Brian, C.A., Bucana, C.D., Fidler, I.J. Orthotopic and ectopic organ environments differentially influence the sensitivity of murine colon carcinoma cells to doxorubicin and 5-fluorouracil. Int J Cancer. 52, 98-104 (1992).
4. Kashtan, H., Rabau, M., Mullen, J.B., Wong, A.H.C., Roder, J.C., Shiptz, B., Stern, H.S., Gallinger, S., Intra-rectal injection of tumor cells: a novel animal model of rectal cancer. Surg Oncol. 1, 251-256 (1992).
Now it really really looks like a journal, feels like a journal.
It is very professional and holds very very high standards..
congratulations...
1
ReplyPosted by: AnonymousDecember 6, 2007, 10:13 AM