Modification of expression of the malignant phenotype in radiation-initiated cells.

Modification of expression of the malignant phenotype in radiation-initiated cells.
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辐射引发细胞中恶性表型表达的改变。

DOI:
10.1080/09553008714551371
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发表时间:
1987
期刊:
International journal of radiation biology and related studies in physics, chemistry, and medicine
影响因子:
--
通讯作者:
K. H. Clifton
K. H. Clifton
中科院分区:
--
文献类型:
--
作者:
M. Gould;Hiromitsu Watanabe;K. Kamiya;K. H. Clifton

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癌变是一个多阶段的过程,包括最少的起始和促进/进展阶段。辐射和许多环境外来物是有效的起始剂。我们已经表明,这些药物在体内引发癌变是一种常见的细胞事件。在辐照的甲状腺(5gy)中,至少每20个细胞中有一个被启动。辐射和化学物质的起始也被证明是乳腺中常见的细胞事件。因此,起始很可能不是致癌过程中唯一的限速事件。启动细胞表达恶性表型的倾向受到多种因素的调节,包括环境化学物质、生理和遗传因素。体外和体外生理因素可以促进或抑制初始细胞向肿瘤的进展。例如,催乳素提高了放射和化学引发的乳腺肿瘤的进展速度,而糖皮质激素抑制了这种进展。TSH促进辐射引发的甲状腺肿瘤的进展,而与未照射的甲状腺细胞相关的范围因子抑制这种肿瘤类型的进展。
Carcinogenesis is a multistage process consisting minimally of initiation and promotion/progression stages. Radiation and many environmental xenobiotics are potent initiating agents. We have shown that initiation of carcinogenesis in vivo by these agents is a common cellular event. In the irradiated thyroid (5 Gy) at least one in 20 cells is initiated. Initiation by both radiation and chemicals has also been shown to be a common cellular event in the mammary gland. Initiation therefore is most likely not the sole rate-limiting event in the carcinogenic process. The propensity of the initiated cell to express the malignant phenotype is modulated by many factors, including environmental chemicals and physiological and genetic factors. Scopal and abscopal physiological factors can either enhance or suppress the progression of initiated cells to a frank tumour. For example, prolactin enhances the rate of progression of radiation and chemically initiated mammary tumours while glucocorticoids suppress this progression. TSH enhances the progression of radiation-initiated thyroid tumours while a scopal factor associated with unirradiated thyroid cells suppresses progression of this tumour type.
评估体内每个克隆大鼠乳腺细胞的放射性癌症起始频率。
DOI: --
发表时间: 1986
期刊: Cancer research
影响因子: 11.2
作者:
Clifton,KH;Tanner,MA;Gould,MN
通讯作者: Gould,MN
近交大鼠模型中控制乳腺癌易感性的基因的遗传和表达位点。
DOI: --
发表时间: 1986
期刊: Cancer research
影响因子: 11.2
作者:
Gould,MN
通讯作者: Gould,MN
辐射和催乳素对大鼠乳腺癌的影响:脾内垂体和雌酮胶囊植入物。
DOI: --
发表时间: 1985
期刊: Journal of the National Cancer Institute
影响因子: --
作者:
Clifton,KH;Yasukawa-Barnes,J;Tanner,MA;HaningJr,RV
通讯作者: HaningJr,RV
DOI: 10.1073/pnas.77.12.7262
发表时间: 1980-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
作者:
KENNEDY, AR;FOX, M;LITTLE, JB
通讯作者: LITTLE, JB
DOI: --
发表时间: 1986-02
期刊: Cancer research
影响因子: 11.2
作者:
M. Terzaghi-Howe;C. Mckeown
通讯作者: M. Terzaghi-Howe;C. Mckeown