通过SC79准AKT用于视网膜炎色素性鼠标模型中的光受体保护
Alicia A Brunet1,2,3, Kate Gilbert1,4, Annie L Miller1,2
1Lions Eye Institute Ltd., 2 Verdun St, Nedlands, WA 6009, Australia.
Biomedicines
|January 28, 2026
概括
通过SC79激活AKT通路显示出在视网膜色素炎,特别是衰退形式中的光受体保护的潜力. 需要进一步的研究,以优化治疗的交付,以提高治疗效果.
科学领域:
- 眼科医生 眼科 眼科
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 皮质视网膜炎 (RP) 是遗传失明的主要原因之一.
- 支持生存的激酶AKT在RP光受体下调.
- 激活AKT可能在神经退行性疾病中提供神经保护.
研究的目的:
- 评估SC79的治疗潜力,一种AKT激活剂,在视网膜色素炎 (RP) 的小鼠模型中.
- 评估SC79对第1GFP和RhoP23HGFP小鼠光受体保护和视觉功能的影响.
主要方法:
- 在第1次GFP和RhoP23H.GFP小鼠模型中,SC79通过静脉注射在出生后第12天给药.
- 分析包括视网膜功能,厚度,光受体形态和AKT相关蛋白质表达.
主要成果:
- SC79 (10μM) 在野生型小鼠中耐受良好.
- 在GFP小鼠中,SC79部分保留了外核层厚度,改善了棒和功能,并调节了AKT通路蛋白.
- 在RhoP23H.GFP小鼠中,SC79没有显示可检测的治疗效果,也没有在更高剂量 (100μM) 时提供益处.
结论:
- AKT通路调节在衰退性视网膜色素炎中对光受体保护具有治疗性前景.
- 优化SC79治疗的交付对于实现其全部神经保护潜力至关重要.
相关概念视频
Photoreceptors and Plant Responses to Light
28.4K
Light plays a significant role in regulating the growth and development of plants. In addition to providing energy for photosynthesis, light provides other important cues to regulate a range of developmental and physiological responses in plants.
28.4K
PI3K/mTOR/AKT Signaling Pathway
5.5K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
5.5K
Photoreceptors and Visual Pathways
9.2K
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category,...
9.2K
Mouse Models of Cancer Study
6.5K
Mice have long served as models for studying human biology and pathology because of their phylogenetic and physiological similarity with humans. They are also easy to maintain and breed in the laboratory, and hence, many inbred strains are now available for research. Studies on mice have contributed immeasurably to our understanding of cancer biology.
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
The development of transgenic, knockout, and knock-in mice has led to an exponential increase in their use as model organisms in research,...
6.5K
Targeted Cancer Therapies
8.9K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
8.9K
Targets for Drug Action: Overview
10.2K
Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
10.2K


