Cloning of a novel EGFR-related peptide: a putative negative regulator of EGFR.

Cloning of a novel EGFR-related peptide: a putative negative regulator of EGFR.
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新型 EGFR 相关肽的克隆:假定的 EGFR 负调节因子。

DOI:
10.1152/ajpcell.2001.280.5.c1083
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发表时间:
2001
期刊:
American journal of physiology. Cell physiology
影响因子:
--
通讯作者:
Majumdar,AP
Majumdar,AP
中科院分区:
--
文献类型:
--
作者:
Yu,Y;Rishi,AK;Turner,JR;Liu,D;Black,ED;Moshier,JA;Majumdar,AP

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尽管表皮生长因子受体 (EGFR) 在调节许多组织中的细胞增殖、分化和转化中发挥着关键作用,但人们对可能调节其功能的因子知之甚少。我们从大鼠胃十二指肠粘膜中分离出一个 cDNA 克隆,其全长为 1,958 bp,其中包含 227 bp 的 5'-非翻译区 (UTR) 和编码 479 个氨基酸的开放阅读框,随后是 290 bp 的 3'-UTR。它显示出与大鼠 EGFR 外部结构域约 85% 的核苷酸同源性。我们将新分离的cDNA产物称为EGFR相关蛋白(ERRP)。在使用来自不同大鼠组织的 Poly(A)+RNA 进行的 Northern 印迹分析中,ERRP cDNA 与多个 mRNA 转录物杂交,其中约 2 kb 的转录物反应最强。在小肠中观察到 2-kb mRNA 转录物的最大表达,其次是结肠、肝脏、胃粘膜和其他组织。与载体转染的对照相比,将 ERRP cDNA 转染到结肠癌细胞系 HCT116 中,导致单层细胞增殖和软琼脂中集落形成显着减少。在另一种具有四环素调节启动子系统的结肠癌细胞系 Caco-2 中,在缺乏强力霉素的情况下诱导 ERRP 表达与 EGFR 活化和增殖的显着减少相关。我们得出结论,ERRP cDNA可能代表EGFR基因家族的新成员,并且ERRP通过调节EGFR的功能在调节细胞增殖中发挥作用。
Although epidermal growth factor receptor (EGFR) plays a key role in regulating cell proliferation, differentiation, and transformation in many tissues, little is known about the factor(s) that may modulate its function. We have isolated a cDNA clone from the rat gastroduodenal mucosa whose full length revealed 1,958 bp that contained 227 bp of 5′-untranslated region (UTR) and an open-reading frame encoding 479 amino acids, followed by 290 bp of 3′-UTR. It showed ∼85% nucleotide homology to the external domain of the rat EGFR. We refer to the product of the newly isolated cDNA as EGFR-related protein (ERRP). In Northern blot analysis with poly(A)+RNA from different rat tissues, ERRP cDNA hybridized to several mRNA transcripts with the strongest reaction noted with a transcript of ∼2 kb. Maximal expression of the 2-kb mRNA transcript was observed in the small intestine, followed by colon, liver, gastric mucosa, and other tissues. Transfection of ERRP cDNA into a colon cancer cell line, HCT116, resulted in a marked reduction in proliferation in monolayer and colony formation in soft agar compared with the vector-transfected controls. In another colon cancer cell line, Caco-2, with a tetracycline-regulated promoter system, induction of ERRP expression in the absence of doxycycline was associated with a marked reduction in EGFR activation and proliferation. We conclude that the ERRP cDNA may represent a new member of the EGFR gene family and that ERRP plays a role in regulating cell proliferation by modulating the function of EGFR.
大鼠衰老过程中胃粘膜酪氨酸激酶活性及其与细胞增殖的关系。
DOI: 10.1016/0304-4165(88)90043-8
发表时间: 1988
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Adhip P. Nandi Manjmdar;Adhip P. Nandi Manjmdar;Elizabeth A. Edgerton
通讯作者: Elizabeth A. Edgerton
DOI: 10.1093/oxfordjournals.bmb.a072464
发表时间: 1991-01-01
影响因子: 6.7
作者:
GULLICK, WJ
通讯作者: GULLICK, WJ
DOI: 10.1073/pnas.87.13.4905
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影响因子: 11.1
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DOI: 10.1152/ajpgi.1997.273.2.g389
发表时间: 1997
期刊: The American journal of physiology.
影响因子: --
作者:
Tureaud,J;Sarkar,FH;Fligiel,SE;Kulkarni,S;Jaszewski,R;Reddy,K;Yu,Y;Majumdar,AP
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衰老会减少胃粘膜再生:与酪氨酸激酶的关系。
DOI: --
发表时间: 1994
期刊: Laboratory investigation; a journal of technical methods and pathology
影响因子: --
作者:
Fligiel,SE;Relan,NK;Dutta,S;Tureaud,J;Hatfield,J;Majumdar,AP
通讯作者: Majumdar,AP