Live imaging of cysteine-cathepsin activity reveals dynamics of focal inflammation, angiogenesis, and polyp growth.

Live imaging of cysteine-cathepsin activity reveals dynamics of focal inflammation, angiogenesis, and polyp growth.
复制标题

半胱氨酸 - 圣皮辛活性的实时成像揭示了局灶性炎症,血管生成和息肉生长的动力学。

DOI:
10.1371/journal.pone.0002916
复制
发表时间:
2008-08-13
期刊:
影响因子:
3.7
通讯作者:
Khazaie, Khashayarsha
Khazaie, Khashayarsha
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Gounaris, Elias;Tung, Ching H.;Restaino, Clifford;Maehr, Rene;Kohler, Rainer;Joyce, Johanna A.;Plough, Hidde L.;Barrett, Terrence A.;Weissleder, Ralph;Khazaie, Khashayarsha

文献摘要

参考文献

被引文献

相似文献

据估计,患者中高达 30% 的可检测到的息肉会自行消退。评估癌症有效治疗的一项主要挑战是读取肿瘤消退和对治疗的良好生物反应。利用诱导近红外 (NIR) 荧光探针对半合子小鼠的肠息肉进行可视化,以发现腺瘤性息肉病大肠杆菌 (APC) 基因的新型截短。活体小鼠的激光扫描共聚焦显微镜可以观察到血管丰富的良性发育不良病变中的组织蛋白酶活性。使用生物素化自杀抑制剂,我们量化了息肉中组织蛋白酶 B 和 Z 的活性增加。超过 3/4 的探针信号位于浸润病变的 CD11b+Gr1+ 骨髓源性抑制细胞 (MDSC) 和 CD11b+F4/80+ 巨噬细胞中。在小鼠中,息肉病可通过组织蛋白酶 B 的基因消除而减弱,并通过中和 TNFα 来抑制。在这两种情况下,探针信号减弱都是由于 MDSC 丢失造成的。因此,局部组织蛋白酶活性的体内近红外成像揭示了与癌症进展在病因学上相关的炎症反应,并且是监测治疗反应的合适方法。
It has been estimated that up to 30% of detectable polyps in patients regress spontaneously. One major challenge in the evaluation of effective therapy of cancer is the readout for tumor regression and favorable biological response to therapy. Inducible near infra-red (NIR) fluorescent probes were utilized to visualize intestinal polyps of mice hemizygous for a novel truncation of the Adenomatous Polyposis coli (APC) gene. Laser Scanning Confocal Microscopy in live mice allowed visualization of cathepsin activity in richly vascularized benign dysplastic lesions. Using biotinylated suicide inhibitors we quantified increased activities of the Cathepsin B & Z in the polyps. More than ¾ of the probe signal was localized in CD11b+Gr1+ myeloid derived suppressor cells (MDSC) and CD11b+F4/80+ macrophages infiltrating the lesions. Polyposis was attenuated through genetic ablation of cathepsin B, and suppressed by neutralization of TNFα in mice. In both cases, diminished probe signal was accounted for by loss of MDSC. Thus, in vivo NIR imaging of focal cathepsin activity reveals inflammatory reactions etiologically linked with cancer progression and is a suitable approach for monitoring response to therapy.
DOI: 10.1172/jci9411
发表时间: 2000-09-01
影响因子: 15.9
作者:
Halangk, W;Lerch, MM;Deussing, J
通讯作者: Deussing, J
DOI: 10.1056/nejmoa061355
发表时间: 2006-08-31
影响因子: 158.5
作者:
Bertagnolli, Monica M.;Eagle, Craig J.;Hawk, Ernest T.
通讯作者: Hawk, Ernest T.
DOI: 10.1038/89126
发表时间: 2001-06-01
期刊: NATURE MEDICINE
影响因子: 82.9
作者:
Bremer, C;Tung, CH;Weissleder, R
通讯作者: Weissleder, R
DOI: 10.1073/pnas.95.8.4516
发表时间: 1998-04-14
影响因子: 11.1
作者:
Deussing, J;Roth, W;Villadangos, JA
通讯作者: Villadangos, JA
DOI: 10.1006/mvre.1999.2207
发表时间: 2000-01-01
影响因子: 3.1
作者:
Feng, D;Nagy, JA;Dvorak, HF
通讯作者: Dvorak, HF