Subcutaneous administration of D-luciferin is an effective alternative to intraperitoneal injection in bioluminescence imaging of xenograft tumors in nude mice.

Subcutaneous administration of D-luciferin is an effective alternative to intraperitoneal injection in bioluminescence imaging of xenograft tumors in nude mice.
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在裸鼠异种移植肿瘤的生物发光成像中,皮下注射 D-荧光素是腹腔注射的有效替代方法。

DOI:
10.1155/2013/689279
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发表时间:
2013
期刊:
ISRN Molecular Imaging
影响因子:
--
通讯作者:
Valerie,Kristoffer
Valerie,Kristoffer
中科院分区:
--
文献类型:
--
作者:
Khalil,AshrafA;Jameson,MarkJ;Broaddus,WilliamC;Chung,TheodoreD;Golding,SarahE;Dever,SethM;Rosenberg,Elisabeth;Valerie,Kristoffer

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目前,腹腔(IP)注射D-荧光素是为生物发光成像(BLI)提供底物的首选方法;然而,由于意外肠道注射,其失败率为 3-10%。本研究评估了皮下 (SC) 注射 D-荧光素后 BLI 的质量,并证明了 SC 注射在解剖结构不同的肿瘤模型中的有效性。携带荧光素酶表达肿瘤的小鼠在 SC 或 IP 注射 D-荧光素后接受 BLI。 SC 注射后达到最大发光的平均时间为 6 分钟(范围 5-9 分钟),IP 注射后为 8 分钟(范围 5-8 分钟)。注射 7 分钟内,SC 和 IP 途径在皮下、颅内、舌和肺异种移植肿瘤模型中产生相似的发光。在皮下和颅内异种移植相结合的模型中,皮下注射导致所有部位按比例发光,证实不会发生底物的优先递送。虽然腹腔注射有时无法观察到肿瘤,但皮下注射可以可靠地观察到所有肿瘤。因此,皮下注射 D-荧光素是裸鼠 BLI 腹腔注射的一种方便有效的替代方法。这可能是一种更好的方法,特别是对于信号较弱的肿瘤和/或需要更高的精度时。
Currently, intraperitoneal (IP) injection of D‐luciferin is the preferred method of providing substrate for bioluminescence imaging (BLI); however it has a failure rate of 3–10% due to accidental intestinal injection. The present study evaluates the quality of BLI after subcutaneous (SC) injection of D‐luciferin and demonstrates the effectiveness of SC injection in anatomically disparate tumor models. Mice bearing luciferase‐expressing tumors underwent BLI after SC or IP injection of D‐luciferin. The average time to maximal luminescence was 6 min (range 5–9 min) after SC injection and 8 min (range 5–8 min) after IP injection. Within 7 minutes of injection, SC and IP routes yielded similar luminescence in subcutaneous, intracranial, tongue, and lung xenograft tumor models. In a model of combined subcutaneous and intracranial xenografts, SC injection resulted in proportional luminescence at all sites, confirming that preferential delivery of substrate does not occur. While tumors were occasionally not visualized with IP injection, all tumors were visualized reliably with SC injection. Thus, SC injection of D‐luciferin is a convenient and effective alternative to IP injection for BLI in nude mice. It may be a preferable approach, particularly for tumors with weaker signals and/or when greater precision is required.
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