Ovarian tumor cells express a novel multi-domain cell surface serine protease.

Ovarian tumor cells express a novel multi-domain cell surface serine protease.
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卵巢肿瘤细胞表达一种新型多结构域细胞表面丝氨酸蛋白酶。

DOI:
10.1016/s0925-4439(00)00058-2
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发表时间:
2000
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
T. O'brien
T. O'brien
中科院分区:
--
文献类型:
--
作者:
L. J. Underwood;K. Shigemasa;H. Tanimoto;J. Beard;E. Schneider;Y. Wang;T. Parmley;T. O'brien

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丝氨酸蛋白酶在正常的生物过程中具有多种功能。这些功能经常被癌细胞篡改,通过增加肿瘤的生长和转移潜能来允许肿瘤的进展。在这里,我们使用基于聚合酶链式反应(PCR)的策略克隆了肿瘤相关差异表达基因-12(TADG-12),这是一种来自卵巢癌的新的丝氨酸蛋白酶。这项技术还揭示了Tadg-12的一种变种剪接形式,可能导致蛋白质产物被截断。半定量聚合酶链式反应显示TADG-12在55例卵巢癌组织中有41例相对正常表达,在22例卵巢癌中有8例TADG-12V变异型表达水平升高。Northern杂交显示了三个转录本,其中最大的转录本约为2.4kb。筛选了一个卵巢肿瘤的cDNA文库,并对TADG-12的全长进行了鉴定。该序列编码一个由454个氨基酸组成的蛋白质,包括一个潜在的跨膜区、一个低密度脂蛋白受体样区、一个富含半胱氨酸的清道夫受体结构域和一个丝氨酸蛋白酶结构域。这些特征意味着TADG-12将位于细胞表面,它可能作为治疗的分子靶点或诊断标记物。
Serine proteases serve many functions in normal biological processes. These functions are often usurped by cancer cells to allow progression of tumors by increasing the growth and metastatic potential of the neoplasia. Here, we have used a polymerase chain reaction (PCR)-based strategy to clone Tumor Associated Differentially-expressed Gene-12 (TADG-12), a new serine protease from ovarian carcinoma. This technique also revealed a variant splicing form of TADG-12 that could lead to a truncated protein product. Semi-quantitative PCR showed that TADG-12 is overexpressed in 41 of 55 ovarian cancer specimens relative to normal expression, and the variant form, TADG-12V is found at increased levels in 8 of 22 carcinomas examined. Northern blot revealed three transcripts, the largest of which is approximately 2.4 kb. An ovarian tumor cDNA library was screened, and the entire cDNA of TADG-12 has been identified. This sequence encodes a putative protein of 454 amino acids which includes a potential transmembrane domain, an LDL receptor-like domain, a scavenger receptor cysteine-rich domain, and a serine protease domain. These features imply that TADG-12 will be at the cell surface, and it may be useful as a molecular target for therapy or a diagnostic marker.
DOI: --
发表时间: 1993-01
期刊: Cancer research
影响因子: 11.2
作者:
W. Powell;J. Knox;M. Navre;T. Grogan;J. Kittelson;Raymond B. Nagle;G. Bowden
通讯作者: W. Powell;J. Knox;M. Navre;T. Grogan;J. Kittelson;Raymond B. Nagle;G. Bowden
低密度脂蛋白受体配体结合域中的第一个富含半胱氨酸的重复序列结合 Ca2 和单克隆抗体,但不结合脂蛋白。
DOI: --
发表时间: 1987
期刊: The Journal of biological chemistry
影响因子: --
作者:
vanDriel,IR;Goldstein,JL;Südhof,TC;Brown,MS
通讯作者: Brown,MS
DOI: 10.1073/pnas.87.22.8810
发表时间: 1990-11-01
影响因子: 11.1
作者:
FREEMAN, M;ASHKENAS, J;KRIEGER, M
通讯作者: KRIEGER, M
DOI: 10.1021/bi00403a032
发表时间: 1988-02-09
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
LEYTUS, SP;LOEB, KR;DAVIE, EW
通讯作者: DAVIE, EW
DOI: 10.1126/science.2988123
发表时间: 1985-01-01
期刊: SCIENCE
影响因子: 56.9
作者:
SUDHOF, TC;GOLDSTEIN, JL;RUSSELL, DW
通讯作者: RUSSELL, DW