更新于：2024-05-01

TUBB3

tubulin beta 3 class III

更新于：2024-05-01

基本信息

别名

beta-4、CFEOM3、CFEOM3A

+ [10]

简介

Tubulin is the major constituent of microtubules, a cylinder consisting of laterally associated linear protofilaments composed of alpha- and beta-tubulin heterodimers (PubMed:34996871). Microtubules grow by the addition of GTP-tubulin dimers to the microtubule end, where a stabilizing cap forms (PubMed:34996871). Below the cap, tubulin dimers are in GDP-bound state, owing to GTPase activity of alpha-tubulin (PubMed:34996871). TUBB3 plays a critical role in proper axon guidance and maintenance (PubMed:20074521). Binding of NTN1/Netrin-1 to its receptor UNC5C might cause dissociation of UNC5C from polymerized TUBB3 in microtubules and thereby lead to increased microtubule dynamics and axon repulsion (PubMed:28483977). Plays a role in dorsal root ganglion axon projection towards the spinal cord (PubMed:28483977).

关联

项与 TUBB3 相关的药物

CR-42-24

靶点

TUBB3

作用机制

TUBB3抑制剂

在研机构-

原研机构

University of Alberta

在研适应症-

非在研适应症

膀胱癌

最高研发阶段无进展

首次获批国家/地区-

首次获批日期1800-01-20

100 项与 TUBB3 相关的临床结果

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100 项与 TUBB3 相关的转化医学

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0 项与 TUBB3 相关的专利（医药）

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2,310

项与 TUBB3 相关的文献（医药）

2024-06-01·IBRO neuroscience reports

Impact of dihydropyrimidinase-related protein 2 in memory formation on rats and its possible role in neuronal back remodeling.

Article

作者: Arif A Mekhtiev ; Shamsiyya M Asadova

The article concerns the problem of molecular mechanisms of memory formation. In this study the effects of polyclonal antibodies to serotonin-modulating anticonsolidation protein (SMAP) complex and its component dihydropyrimidinase-related protein 2 (DRP2) have been analyzed. Intra-cerebral administration of polyclonal anti-SMAP antibody significantly enhanced elaboration and strengthened memory formation in two complex behavioral conditioned models. At the same time, intra-cerebral administration of anti-SMAP antibody resulted in an increase of the content of nerve growth factor (NGF) in the water-soluble fraction of the hippocampus while intra-cerebral administration of anti-DRP2 antibody caused a decrease in the content of β-III tubulin (a marker of differentiated neurons) in the hippocampus and in the left parietal cortex of untrained rats. The obtained results indicate that DRP2 might participate in regulation of the processes of back remodeling of mature nerve cells of adult organisms, occurring during training of rats in the behavioral paradigm used in this study under the effects of anti-SMAP and anti-DRP2 antibodies. Conclusion is made that back remodeling (dedifferentiation) of mature nerve cells, apparently, is engaged in memory formation.

2024-02-15·Combinatorial chemistry & high throughput screening

Zuogui Pill Promotes Neurite Outgrowth by Regulating OPN/ IGF-1R/PTEN and Downstream mTOR Signaling Pathway.

Article

作者: Yan Liu ; Dan Wu ; Xiaohui Yan ; Xinyu Xu ; Jian Zhu ; Changyin Li ; Qinghua Feng ; Li Li ; Minghua Wu ; Wenlei Li

AIM AND OBJECTIVE:

Zuogui pill (ZGP) is the traditional Chinese medicine for tonifying kidney yin. Clinical and animal studies have shown that ZGP effectively enhances neurologic impairment after ischemic stroke, which may be related to promoting neurite outgrowth. This investigation aimed to prove the pro-neurite outgrowth impact of ZGP and define the underlying molecular pathway in vitro.

MATERIALS AND METHODS:

The major biochemical components in the ZGP were investigated using UPLC-QTOF-MS. All-trans retinoic acid (ATRA) was employed to stimulate SH-SY5Y cells to develop into mature neurons, followed by oxygen-glucose deprivation and reoxygenation damage (OGD/R). Then the cells were supplemented with different concentrations of ZGP, and cell viability was identified by CCK-8. The neurites' outgrowth abilities were detected by wound healing test, while immunofluorescence staining of β-III-tubulin was used to label neurites and measure their length. Western blot was employed to discover the changes in protein levels.

RESULTS:

ZGP improved the cell viability of differentiated SH-SY5Y cells following OGD/R damage, according to the CCK-8 assay. Concurrently, ZGP promoted neurite outgrowth and improved neurite crossing and migration ability. Protein expression analysis showed that ZGP upregulated the expression of GAP43, OPN, p-IGF-1R, mTOR, and p-S6 proteins but downregulated the expression of PTEN protein. Blocking assay with IGF-1R specific inhibitor Linstinib suggested IGF-1R mediated mTOR signaling pathway was involved in the pro-neurite outgrowth effect of ZGP.

CONCLUSION:

This work illustrated the molecular mechanism underpinning ZGP's action and offered more proof of its ability to promote neurite outgrowth and regeneration following ischemic stroke.

2024-01-29·Expert review of respiratory medicine

A three-gene random forest model for diagnosing idiopathic pulmonary fibrosis based on circadian rhythm-related genes in lung tissue.

Article

作者: Jie He ; Jun Hu ; Hairong Liu

BACKGROUND:

The disorder of circadian rhythm could be a key factor mediating fibrotic lung disease Therefore, our study aims to determine the diagnostic value of circadian rhythm-related genes (CRRGs) in IPF.

METHODS:

We retrieved the data on CRRGs from previous studies and the GSE150910 dataset. The participants from the GSE150910 dataset were divided into training and internal validation sets. Next, we used several various bioinformatics methods and machine learning algorithms to screen genes. Next, we identified SEMA5A, COL7A1, and TUBB3, which were included in the random forest (RF) diagnostic model. Finally, external validation was conducted on data retrieved from the GSE184316 datasets.

RESULTS:

The results revealed that the RF diagnostic model could diagnose patients with IPF in the internal validation set with the area under the ROC curve (AUC) value of 0.905 and in the external validation with the AUC value of 0.767. Furthermore, real-time quantitative PCR and western blotting results revealed a significant decrease in SEMA5A (p < 0.05) expression level and an increase in COL7A1 and TUBB3 expression levels in TGF-β1-treated normal human lung fibroblasts.

CONCLUSION:

We constructed an RF diagnostic model based on SEMA5A, COL7A1, and TUBB3 expression in lung tissue for diagnosing patients with IPF.

项与 TUBB3 相关的新闻（医药）

2023-11-05

·生物探索

Cell Discovery | 人类卵子非整倍体高发生率的潜在机理

非整倍体严重损害女性生育能力，增加出生缺陷的发生率。即使是来自年轻女性的人类卵子的非整倍体率也明显高于其他哺乳动物。然而，人类卵子非整倍体高发生率的内在遗传因素在很大程度上仍然未知。2023年10月24日，复旦大学王磊、武田宇及桑庆共同通讯在Cell Discovery（IF=34）在线发表题为“Ectopic expression of human TUBB8 leads to increased aneuploidy in mouse oocytes”的研究论文，该研究发现人类TUBB8 在小鼠卵母细胞中的异位表达通过引起着丝点微管(K-MT)附着缺陷增加了非整倍体的发生率。在表达TUBB8的小鼠卵母细胞中，拉伸的二价体受到的张力较小，导致在I中期后期，AURKB/C对HEC1的持续磷酸化状态损害了已建立的正确的K-MT附着。该研究发现，没有C端尾的TUBB8异位表达通过减少错误的K-MT附着而降低了非整倍体率。重要的是，在复发性流产患者中发现了TUBB8 C端尾部的变异。小鼠卵母细胞中TUBB8变体的异位表达也会损害K-MT附着并增加非整倍体率。总之，该研究为人类卵子非整倍体的生理机制以及反复流产的病理生理机制提供了新的认识。人类卵子经常含有不正确数量的染色体，这种情况被称为非整倍体，它是女性不育/生育能力低下、反复流产和出生缺陷的主要原因之一。20 ~ 32岁女性非整倍体卵的发生率为20% ~ 30%，高于许多其他生殖年龄物种，如小鼠(1% ~ 4%)、猪(3% ~ 10%)、牛(5.8% ~ 7.1%)、马(~15.6%)和恒河猴(7.1% ~ 18.4%)。虽然在人类卵子中观察到高频率的非整倍体，但在生理条件下导致人类卵子高频率非整倍体的具体遗传因素和确切机制仍有待阐明。人类卵子的非整倍性是由减数分裂I中染色体分离错误引起的。研究表明，瞬态三极纺锤体诱导的三向分裂可能导致后期染色体分离容易出错。人类卵母细胞中缺乏KIFC1被认为是其不稳定和多纺锤极的原因，导致非整倍性增加。此外，短暂的不稳定多极纺锤体会导致人类卵母细胞中异常的着丝点微管(K-MT)附着，从而导致染色体误分离。成对的着丝点由来自相对纺锤极的微管连接，以确保准确的染色体分离。稳定的着丝点微管(也称为k-纤维)是正确的K-MT附着所必需的。TUBB8的异位表达增加了小鼠卵母细胞非整倍体的发生率（图源自Cell Discovery ）微管通常由保守的α和β-微管蛋白异二聚体组成。人β-微管蛋白由9个同型组成，包括TUBB1、TUBB2A、TUBB2B、TUBB3、TUBB4A、TUBB4B、TUBB5、TUBB6和TUBB8。除TUBB8外，在小鼠卵母细胞中也检测到8种。之前证明了TUBB8在人类卵母细胞纺锤体中是唯一表达的，纺锤体由含有显性β-微管蛋白同型编码的TUBB821的异源二聚体聚合而成。而小鼠卵母细胞纺锤体主要由β-微管蛋白同型组成，如TUBB3、TUBB4B、TUBB5和TUBB6。此外，之前的研究表明，TUBB8变异患者表现出由广泛的纺锤体缺陷引起的卵母细胞减数分裂停滞、早期胚胎发育停滞或非整倍体。该研究证明了灵长类特异性TUBB8的异位表达诱导小鼠卵母细胞非整倍体的升级，并进一步阐明了TUBB8诱导非整倍体的机制。此外，研究发现TUBB8 C端尾部的变异更容易产生非整倍体卵子，并与复发性流产有关。这些结果为人类卵子高频率非整倍体的生理和病理生理机制提供了新的认识。文章来源“iNature”责编|探索君排版|探索君参考文献：Dong, J., Jin, L., Bao, S. et al. Ectopic expression of human TUBB8 leads to increased aneuploidy in mouse oocytes. Cell Discov 9, 105 (2023). https://doi-org.libproxy1.nus.edu.sg/10.1038/s41421-023-00599-zEnd往期精选围观历史性突破！不需卵子和精子就可以合成人类胚胎热文富豪用儿子血浆“回春”科学吗？Science：血液牛磺酸缺乏驱动衰老热文世界首例！35岁的她，通过机器人操刀移植的子宫，成功诞下宝宝热文为了避免心脏骤停，53岁的他成为“第一个”植入开创性除颤器的心脏病患者热文首次披露！175家生物制药公司的薪资数据：薪资中位数达20万美元点击“阅读原文”，了解更多~

临床1期临床结果