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- 近岸蛋白(Novoprotein)
- 中国
- DRA17
- 2025年11月10日
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Human TSH (诊断原料,其它）
Recombinant Human TSH
Catalog #: DRA17 Derived From: Human Cells
Description:
Recombinant Human Thyroid-stimulating hormone α/β Dimer is produced by Mammalian expression system and the target gene encoding Ala25-Ser116&Phe21-Val138 is expressed with a Flag tag&6His at the C-terminus.
Accession: P01215&P01222
Names(Known as):Thyroid-stimulating hormone α/β Dimer;thyrotropin, thyrotropic hormone, TSH, or hTSH for human TSH
Quality Control:
Mol Mass: 11.6&14.3kDa AP Mol Mass: 15-22kDa, reducing conditions
Purity: Greater than 95% as determined by reducing SDS-PAGE.
Formulation:
Supplied as a 0.2 μm filtered solution of PBS, pH7.4.
Shipping:
The product is shipped on dry ice pack. Upon receipt, store it immediately at the temperature listed below.
Storage:
Reconstituted protein solution should be stored at ≤ -20°C.
Purification:
Affinity purification chromatography.
Immunoreactivity:
N.A.
Application:
Immunogen, calibrator or standard.
Background:
Thyroid-stimulating hormone (also known as TSH or thyrotropin) is a hormone synthesized and secreted by thyrotrope cells in the anterior pituitary gland which regulates the endocrine function of the thyroid gland. TSH stimulates the thyroid gland to secrete the hormones thyroxine (T4) and triiodothyronine (T3). TSH production is controlled by a Thyrotropin Releasing Hormone, (TRH), which is manufactured in the hypothalamus and transported to the Anterior Pituitary gland, where it increases TSH production and release. Somatostatin is also produced by the hypothalamus, and has an opposite effect on the pituitary production of TSH, decreasing or inhibiting its release. The level of Thyroid hormones (T3 and T4) in the blood have an additional effect on the pituitary release of TSH, When the levels of T3 and T4 are low, the production of TSH is increased, and conversely, when levels of T3 and T4 are high, then TSH production is decreased. This effect creates a regulatory negative feedback loop.TSH is a glycoprotein and consists of two subunits, the alpha and the beta subunit.The α (alpha) subunit is identical to that of human chorionic gonadotropin (HCG), luteinising hormone (LH), follicle-stimulating hormone (FSH). The β (beta) subunit is unique to TSH, and therefore determines its function.
FOR RESEARCH OR FURTHER MANUFACTURING USE ONLY
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文献和实验垂体前叶分泌的促甲状腺激素（Thyroid Stimulating Hormone, TSH）的相对分子质量约为25000–28000，与腺垂体分泌的卵泡刺激激素（Follicle Stimulating Hormone, FSH）、黄体生成素（Luteinizing Hormone, LH）以及胎盘分泌的人绒毛膜促性腺激素（human Chorionic Gonadotropin, hCG）一样均为异源二聚体糖蛋白激素。这些激素由非特异性的α亚基与特异性的β亚基以非共价键联结而成。TSH的β
人垂体肿瘤（human pituitary tumors, HPA）起源于垂体前叶的内分泌细胞，约占所有颅内肿瘤的 15%，通常被认为是良性肿瘤。然而在手术治疗中发现，30-40% 病例发生了局部的侵袭性行为【1】。垂体瘤分为功能性垂体瘤和无功能性垂体瘤，根据瘤细胞分泌的激素将功能性垂体瘤再进一步分为：泌乳素细胞腺瘤（PRL），生长激素细胞腺瘤（GH），促肾上腺皮质激素细胞瘤（ACTH），促甲状腺素细胞瘤（TSH），促性腺激素细胞瘤（LH/FSH）及混合瘤和未分类腺瘤。 目前，侵袭性垂体
腺免疫球蛋白（human thyroid-stmulating immunoglobulin,HTSI），其化学结构与TSH相似，它可与TSH竞争甲状腺细胞腺上的受体刺激甲状腺，这可能是引起甲状腺功能亢进的原因之一。 腺垂体TSH分泌受下丘脑TRH的控制。下丘脑TRH神经元接受神经系统其他部位传来的信息影响，把环境因素与TRH神经元活动联系起来，然后TRH神经元释放TRH，作用于腺垂体。例如，寒冷刺激的信息到达中枢神经中枢神经系统，一方面传入下丘脑体温
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