The role of Prop1 in pituitary cell proliferation

Prop1在垂体细胞增殖中的作用

• 批准号: 6406072
• 负责人: LORI T RAETZMAN
• 金额: $ 3.48万
• 依托单位: UNIVERSITY OF MICHIGAN AT ANN ARBOR
• 依托单位国家: 美国
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-18 至
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/6406072
• 关键词: bromodeoxyuridine; cell differentiation; cell proliferation; cytogenetics; developmental genetics; gene expression; gene mutation; gene targeting; genetic regulation; genetically modified animals; gonadotropins; immunocytochemistry; in situ hybridization; laboratory mouse; pituitary gland; polymerase chain reaction; postdoctoral investigator; prolactin; somatotropin; terminal nick end labeling; thyrotropin; transcription factor

Development of the pituitary gland relies on the proper spatial and temporal expression of extrinsic factors produced by the surrounding tissue and transcription factors intrinsic to the pituitary. These signals serve to control the specification and proliferation of the 5 hormone producing cell types of the anterior pituitary gland. A common disease that results from a defective pituitary deirelopment is combined pituitary hormone deficiency (CPHD). One gene known to be mutated in this disease is Prop1. Patients as well as mice with mutations in Propl present with decreased or negligible levels of the serum hormones thyrotropin, growth hormone, prolactin and gonadotropins. Decreased pituitary volume results from failure of the cells that produce these hormones to proliferate. To define the role of Propl in pituitary cell proliferation, the following studies will be performed: characterize the phenotype of pituitaries in which Propl is either absent or overexpressed persistently, and validate and characterize putative Propl target genes.

垂体的发展依赖于周围组织产生的外在因子的适当空间和时间表达，而转录因子固有的。这些信号用于控制垂体前腺的5种激素类型的细胞类型的规范和增殖。由垂体缺陷型引起的一种常见疾病是垂体激素缺乏症（CPHD）。一种已知在这种疾病中突变的基因是Prop1。患者以及具有突变的小鼠，其血清激素甲状腺激素，生长激素，催乳素和促性腺激素的水平降低或可忽略不计。垂体量减少导致产生这些激素增殖的细胞失败。为了定义先知在垂体细胞增殖中的作用，将进行以下研究：表征垂体的表型，其中垂体不存在或过表达垂体，并验证和表征推定的先知靶基因。