更新于：2024-11-01

RORB

更新于：2024-11-01

基本信息

别名

NR1F2、Nuclear receptor ROR-beta、Nuclear receptor RZR-beta

+ [7]

简介

Nuclear receptor that binds DNA as a monomer to ROR response elements (RORE) containing a single core motif half-site 5'-AGGTCA-3' preceded by a short A-T-rich sequence. Considered to have intrinsic transcriptional activity, have some natural ligands such as all-trans retinoic acid (ATRA) and other retinoids which act as inverse agonists repressing the transcriptional activity. Required for normal postnatal development of rod and cone photoreceptor cells. Modulates rod photoreceptors differentiation at least by inducing the transcription factor NRL-mediated pathway. In cone photoreceptor cells, regulates transcription of OPN1SW. Involved in the regulation of the period length and stability of the circadian rhythm. May control cytoarchitectural patterning of neocortical neurons during development. May act in a dose-dependent manner to regulate barrel formation upon innervation of layer IV neurons by thalamocortical axons. May play a role in the suppression of osteoblastic differentiation through the inhibition of RUNX2 transcriptional activity (By similarity). Isoform 1 is critical for hindlimb motor control and for the differentiation of amacrine and horizontal cells in the retina. Regulates the expression of PTF1A synergistically with FOXN4 (By similarity).

关联

项与 RORB 相关的药物

ROR-β antagonists (Orphagen)

靶点

RORB

作用机制

RORB antagonists

在研机构

Orphagen Pharmaceuticals

原研机构

Orphagen Pharmaceuticals

在研适应症

白血病 [+1]

非在研适应症-

最高研发阶段临床前

首次获批国家/地区-

首次获批日期1800-01-20

100 项与 RORB 相关的临床结果

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100 项与 RORB 相关的转化医学

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0 项与 RORB 相关的专利（医药）

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161

项与 RORB 相关的文献（医药）

2024-07-01·Journal of Comparative Neurology

Genoarchitectural Definition of the Adult Mouse Mesocortical Ring: A Contribution to Cortical Ring Theory

Article

作者: Puelles, Luis ; Alonso, Antonia ; García‐Calero, Elena

ABSTRACTData mining was performed at the databases of the Allen Institute for Brain Science (RRID:SCR_017001) searching for genes expressed selectively throughout the adult mouse mesocortex (transitional cortex ring predicted within the concentric ring theory of mammalian cortical structure, in contrast with central isocortex [ICx] and peripheral allocortex). We aimed to explore a shared molecular profile selective of all or most mesocortex areas. This approach checks and corroborates the precision of other previous definitory criteria, such as poor myelination and high kainate receptor level. Another aim was to examine which cortical areas properly belong to mesocortex. A total of 34 positive adult selective marker genes of mesocortex were identified, jointly with 12 negative selective markers, making a total of 46 markers. All of them identify the same set of cortical areas surrounding the molecularly different ICx as well as excluding adjacent allocortex. Four representative mesocortex markers—Crym, Lypd1, Cdh13, and Smoc2—are amply illustrated, jointly with complementary material including myelin basic protein, to check myelination, and Rorb, to check layer 4 presence. The retrosplenial (ReSp) area, long held to be mesocortical, does not share any of the 46 markers of mesocortex and instead expresses Nr4a2 and Tshz2, selective parahippocampal allocortex markers. Moreover, it is not hypomyelinic and lacks a Rorb‐positive layer 4, aspects generally present in mesocortex. Exclusion of the ReSp area from the mesocortex ring reveals the latter to be closed at this locus instead by two adjacent areas previously thought to be associative visual ICx (reidentified here molecularly as postsplenial and parasplenial mesocortex areas). The concepts of ICx, mesocortex, and parahippocampal allocortex are thus subtly modified by substantial molecular evidence.

2024-03-01·CNS Neuroscience & Therapeutics

Terminally differentiated cytotoxic CD4⁺ T cells were clonally expanded in the brain lesion of radiation‐induced brain injury

Article

作者: Zhou, Meijuan ; Xu, Yongteng ; Zhong, Ke ; Chen, Sitai ; Xue, Ruiqi ; Zuo, You ; Liu, Sheng ; Zhu, Xiaoqiu ; Hu, Xia ; Shi, Zhongshan ; Liu, Kejia ; Ma, Xueying ; Liu, Xiaolu ; Yang, Jingwen ; Li, Shaojian ; Deng, Zhenhong ; Gui, Shushu ; Tang, Yamei

AbstractBackgroundAccumulating evidence supports the involvement of adaptive immunity in the development of radiation‐induced brain injury (RIBI). Our previous work has emphasized the cytotoxic function of CD8+ T cells in RIBI. In this study, we aimed to investigate the presence and potential roles of cytotoxic CD4+ T cells (CD4+ CTLs) in RIBI to gain a more comprehensive understanding of adaptive immunity in this context.Main TextUtilizing single‐cell RNA sequencing (scRNA‐seq), we analyzed 3934 CD4+ T cells from the brain lesions of four RIBI patients and identified six subclusters within this population. A notable subset, the cytotoxic CD4+ T cells (CD4+ CTLs), was marked with high expression of cytotoxicity‐related genes (NKG7, GZMH, GNLY, FGFBP2, and GZMB) and several chemokine and chemokine receptors (CCL5, CX3CR1, and CCL4L2). Through in‐depth pseudotime analysis, which simulates the development of CD4+ T cells, we observed that the CD4+ CTLs exhibited signatures of terminal differentiation. Their functions were enriched in protein serine/threonine kinase activity, GTPase regulator activity, phosphoprotein phosphatase activity, and cysteine‐type endopeptidase activity involved in the apoptotic signaling pathway. Correspondingly, mice subjected to gamma knife irradiation on the brain showed a time‐dependent infiltration of CD4+ T cells, an increase of MHCII+ cells, and the existence of CD4+ CTLs in lesions, along with an elevation of apoptotic‐related proteins. Finally, and most crucially, single‐cell T‐cell receptor sequencing (scTCR‐seq) analysis at the patient level determined a large clonal expansion of CD4+ CTLs in lesion tissues of RIBI. Transcriptional factor‐encoding genes TBX21, RORB, and EOMES showed positive correlations with the cytotoxic functions of CD4+ T cells, suggesting their potential to distinguish RIBI‐related CD4+ CTLs from other subsets.ConclusionThe present study enriches the understanding of the transcriptional landscape of adaptive immune cells in RIBI patients. It provides the first description of a clonally expanded CD4+ CTL subset in RIBI lesions, which may illuminate new mechanisms in the development of RIBI and offer potential biomarkers or therapeutic targets for the disease.

2024-03-01·Epilepsia

Dissecting genetics of spectrum of epilepsies with eyelid myoclonia by exome sequencing

Article

作者: Casellato, Susanna ; Zara, Federico ; Striano, Pasquale ; Meletti, Stefano ; Leu, Costin ; Bilo, Leonilda ; Martins, Helena ; Krithika, S ; Hernandez-Hernandez, Laura ; May, Patrick ; Messana, Tullio ; Tassi, Laura ; Pinelli, Michele ; Buti, Daniela ; Scheffer, Ingrid E ; Lench, Nick ; Bobbili, Dheeraj ; Viri, Maurizio ; Sisodiya, Sanjay M ; Vaudano, Anna Elisabetta ; Striano, Salvatore ; Salis, Barbara ; Giordano, Lucio ; Vignoli, Aglaia ; Iacomino, Michele ; Bagnasco, Irene ; Bellampalli, Ravishankara ; Nigro, Vincenzo ; Gobbi, Giuseppe ; Coppola, Antonietta ; Cuccurullo, Claudia ; Sofia, Vito ; Balestrini, Simona ; Ferlazzo, Edoardo ; Pippucci, Tommaso

AbstractObjectiveEpilepsy with eyelid myoclonia (EEM) spectrum is a generalized form of epilepsy characterized by eyelid myoclonia with or without absences, eye closure‐induced seizures with electroencephalographic paroxysms, and photosensitivity. Based on the specific clinical features, age at onset, and familial occurrence, a genetic cause has been postulated. Pathogenic variants in CHD2, SYNGAP1, NEXMIF, RORB, and GABRA1 have been reported in individuals with photosensitivity and eyelid myoclonia, but whether other genes are also involved, or a single gene is uniquely linked with EEM, or its subtypes, is not yet known. We aimed to dissect the genetic etiology of EEM.MethodsWe studied a cohort of 105 individuals by using whole exome sequencing. Individuals were divided into two groups: EEM− (isolated EEM) and EEM+ (EEM accompanied by intellectual disability [ID] or any other neurodevelopmental/psychiatric disorder).ResultsWe identified nine variants classified as pathogenic/likely pathogenic in the entire cohort (8.57%); among these, eight (five in CHD2, one in NEXMIF, one in SYNGAP1, and one in TRIM8) were found in the EEM+ subcohort (28.57%). Only one variant (IFIH1) was found in the EEM− subcohort (1.29%); however, because the phenotype of the proband did not fit with published data, additional evidence is needed before considering IFIH1 variants and EEM− an established association. Burden analysis did not identify any single burdened gene or gene set.SignificanceOur results suggest that for EEM, as for many other epilepsies, the identification of a genetic cause is more likely with comorbid ID and/or other neurodevelopmental disorders. Pathogenic variants were mostly found in CHD2, and the association of CHD2 with EEM+ can now be considered a reasonable gene–disease association. We provide further evidence to strengthen the association of EEM+ with NEXMIF and SYNGAP1. Possible new associations between EEM+ and TRIM8, and EEM− and IFIH1, are also reported. Although we provide robust evidence for gene variants associated with EEM+, the core genetic etiology of EEM− remains to be elucidated.

项与 RORB 相关的新闻（医药）

2024-03-31

·今日头条

聚焦特殊人群：老年人和孕妈妈的饮食新知

本期看点：老年人，葫芦巴碱，n-3 PUFA，痴呆症，高脂饮食，孕期饮食，母婴健康，间歇性禁食，肿瘤免疫，信达生物，Ironwood，恒瑞医药，天港医诺，NOOSIO诺希奥该篇日报由R·AI辅助创作生成，人工审核校对。 Nature子刊：NAD+前体葫芦巴碱或可改善老年肌少症 Nature Metabolism——[20.8] ① 线粒体功能失调和NAD+水平低是骨骼肌衰老和肌肉萎缩的特征，本研究发现葫芦巴碱作为NAD+增强剂可通过促进肌肉健康和抑制肌肉老化来治疗年龄相关的肌肉退化；② 在人类中，血清葫芦巴碱水平随着肌肉减少而降低，并与肌肉力量和骨骼肌线粒体氧化磷酸化呈正相关；③ 葫芦巴碱与秀丽隐杆线虫、小鼠和来自健康或肌少症个体的原代肌管中的NAD+结合并增加NAD+水平；④ 葫芦巴碱不会激活GPR109A，而是通过烟酰胺磷酸核糖基转移酶/Preiss-Handler途径在模型中代谢；⑤ 在秀丽隐杆线虫中，葫芦巴碱可以改善线粒体呼吸和生物发生，减少与年龄相关的肌肉萎缩，并通过去乙酰化酶的NAD+依赖机制延长寿命和活动性；⑥ 在雄性小鼠的饮食中补充葫芦巴碱可以增强肌肉力量，防止衰老过程中的疲劳。【原文信息】 Trigonelline is an NAD+ precursor that improves muscle function during ageing and is reduced in human sarcopenia 2024-03-19 , doi: 10.1038/s42255-024-00997-x n-3 PUFA或能提升中老年执行功能（荟萃分析） BMC Medicine——[9.3] ① 本研究通过系统回顾和剂量反应荟萃分析，探讨了n-3多不饱和脂肪酸（PUFA）对无痴呆中老年人认知功能的影响，发现n-3 PUFA可能对提升执行功能有益；② 纳入24项研究近一万人，随访3-36个月，在最初的12个月内，每日摄入超过500毫克的n-3 PUFA和最多420毫克的二十碳五烯酸（EPA）可显著提升执行功能；③ 在血液中二十二碳六烯酸（DHA）和EPA水平不是很低的地区，提升执行功能更显著；④ 对于饮食中EPA和DHA水平不是特别低的中老年人群，补充n-3 PUFA可能有助于改善其执行功能。【原文信息】 The influence of n-3 polyunsaturated fatty acids on cognitive function in individuals without dementia: a systematic review and dose-response meta-analysis 2024-03-12 , doi: 10.1186/s12916-024-03296-0 健康饮食或通过延缓衰老速率降低痴呆症患病风险 Annals of Neurology——[11.2] ① 健康饮食或与痴呆症风险负相关，但其生物学机制暂未可知，本研究通过纳入Framingham Heart Study阵列中60岁以上1644名无痴呆症老人的随访期间饮食、表观遗传学、血液DNA甲基化及其他数据，将健脑饮食（MIND）定义为健康饮食，分析饮食与痴呆症之间的联系；② 长期遵循MIND饮食的受试者，其生物学衰老速度更慢，且痴呆和全因死亡风险较低；③ 中介分析表明，27%的健康饮食与痴呆症风险的关联是由较慢的生物衰老介导的，而全因死亡率的平行中介比例为57%；④ 排除人口统计学、社会经济、生活方式等因素以及排除基线时认知障碍时，关联数据更具稳健性；⑤ 使用另外2个表观遗传时钟重复分析数据，获得了类似的关联结果。【原文信息】 Diet, Pace of Biological Aging, and Risk of Dementia in the Framingham Heart Study 2024-02-26 , doi: 10.1002/ana.26900 饮食和微量营养素与阿尔茨海默病（综述） Ageing Research Reviews——[13.1] ① 本综述旨在研究营养因素在预防或促进阿尔茨海默病（AD）中认知能力下降中的作用，讨论了地中海饮食、维生素、水果和营养保健品在维持健康认知活动方面的有效积极作用；② AD高风险与西方不均衡饮食有关，这类饮食可诱导皮质醇、儿茶酚胺和血清素水平升高，导致氧化应激、认知能力下降和AD；③ 地中海饮食可以降低AD风险，减少可能增加对AD易感性的脑血管危险因素，并通过改善肠道菌群失调来调节中枢神经系统；④ 某些类型的痴呆在男性中更为常见，但女性患AD的风险更高，可能与女性寿命更长有关；⑤ AD的发病机制与铁、锌和铜等微量营养素的动态变化密切相关。【原文信息】 Impact of micronutrients and nutraceuticals on cognitive function and performance in Alzheimer's disease 2024-01-29 , doi: 10.1016/j.arr.2024.102210 高脂饮食对老年小鼠认知行为和中枢及全身炎症有何影响？ Brain Behavior and Immunity——[15.1] ① 将C57BL/6J幼鼠或老年鼠分别给予标准饮食或高脂饮食，探究高脂饮食对老年或性别差异的小鼠神经炎症、运动以及认知行为的影响；② 高脂饮食会增加小鼠的体重，降低运动活动量，改变焦虑相关的探索行为；③ 高脂饮食会损害年轻雄性空间学习和回忆能力，并影响年轻和老年雄性小鼠的条件性恐惧回忆，但对年轻雌性小鼠的空间学习或恐惧条件反射无影响；④ 高脂饮食会显著影响全身炎症，而对神经炎症的影响有限，尤其是在老年雄性小鼠的海马CA1区域，高脂饮食会加剧微胶质细胞的免疫反应。【原文信息】 Impact of high-fat diet on cognitive behavior and central and systemic inflammation with aging and sex differences in mice 2024-02-24 , doi: 10.1016/j.bbi.2024.02.025 Nature子刊：孕期饮食或可影响宝宝脸型？ Nature Communications——[16.6] ① 在人类胚胎面部组织中，PI3K/AKT/mTORC1/自噬通路的多个成分的转录增强子活性与面部形态相关，这提示该信号通路在人类面部发育中发挥重要作用；② 在小鼠和斑马鱼模型中，抑制mTORC1可轻微改变颅面骨骼的形状，表明mTORC1在调节颅面骨骼发育中起着重要作用；③ 通过改变孕鼠饮食中的蛋白质含量，可调节胚胎mTORC1的活性，进而影响颅面骨骼的发育，提示mTORC1在营养信号调控颅面发育中起着关键作用；④ 本研究揭示了mTORC1信号通路在颅面骨骼发育中的分子机制，为研究环境因素对颅面发育的影响提供了重要线索。【原文信息】 The level of protein in the maternal murine diet modulates the facial appearance of the offspring via mTORC1 signaling 2024-03-26 , doi: 10.1038/s41467-024-46030-3 国内团队Nature子刊：母亲营养过剩如何影响雄性后代下丘脑神经元？ Nature Communications——[16.6] ① 复旦大学的王冠琳和中科院的John R. Speakman团队合作发表文章，通过对母鼠及其后代在低脂和高脂饮食下的代谢特征量化，结合哺乳期高峰时期对后代下丘脑的单核转录组分析，全面解析母体饮食扰动时细胞和分子的变化；② 母体高脂饮食导致雄性后代中包括组胺能（Hdc）、精氨酸加压素/视黄酸受体相关孤儿受体β（Avp/Rorb）和黑皮素相关肽/神经肽Y（AgRP/Npy）在内的神经亚群显著扩张；③ 母体营养过剩时，增加后代中Npy-星形胶质细胞的相互作用；④ 研究绘制了全面的子代下丘脑图谱，并揭示了在发育过程中细胞亚群如何以性别特异性方式对母体膳食脂肪做出反应。【原文信息】 Maternal dietary fat during lactation shapes single nucleus transcriptomic profile of postnatal offspring hypothalamus in a sexually dimorphic manner in mice 2024-03-16 , doi: 10.1038/s41467-024-46589-x 孕期益生菌补充对妊娠高血压及相关结果有何影响？ American Journal of Obstetrics & Gynecology MFM——[6.3] ① 通过系统评价和荟萃分析，探讨了孕期服用益生菌对预防子痫前期及相关孕产妇、胎儿和新生儿结果的影响；② 共纳入了29项试验（7735名孕妇），发现益生菌对预防子痫前期（风险比1.14）、早产（风险比0.93）和分娩时孕周（平均差-0.03周）均无显著影响，且这些结果的证据确定性较低；③ 对其他次要结果的影响难以评估，因为相关证据的确定性非常低，未观察到明显的益处或危害；④ 本研究强调了需要更多高质量的试验来明确评估孕期益生菌补充的益处和可能的危害，特别是在营养不良或微生物失调的孕妇中。【原文信息】 The effects of probiotics administration during pregnancy on preeclampsia and associated maternal, fetal and newborn outcomes: a systematic review and meta-analysis 2024-03-04 , doi: 10.1016/j.ajogmf.2024.101322 国内团队：间歇性禁食——改善肥胖新方法（荟萃分析） EClinicalMedicine——[15.1] ① 中国医科大学附属盛京医院赵玉虹、张德宇、吴琪俊和宫婷婷与团队基于糖尿病、超重或肥胖以及代谢综合征三类人群，研究间歇性禁食（IF）与人类健康结果之间的关联，发现间歇性禁食对超重或肥胖成年人的一系列健康结果产生有益影响；② 与超重或肥胖成年人的非干预饮食相比，IF可以降低腰围、脂肪质量、空腹胰岛素、低密度脂蛋白胆固醇、总胆固醇和三酰甘油，但增加了去脂体重；③ 与非干预饮食相比，改良版隔日禁食（MADF）可以降低脂肪质量；④ 在超重或肥胖以及2型糖尿病患者中，IF相对于连续能量限制（CER）饮食可以增加高密度脂蛋白胆固醇水平，但在超重或肥胖中，IF在降低收缩压方面不如CER有效；⑤ 基于敏感性分析，IF干预后体重指数、脂肪量和胰岛素抵抗的稳态模型评估的降低被评定为高质量证据。【原文信息】 Intermittent fasting and health outcomes: an umbrella review of systematic reviews and meta-analyses of randomised controlled trials 2024-03-11 , doi: 10.1016/j.eclinm.2024.102519 中山大学：膳食限制相关分子活动与肿瘤免疫具有强有力联系！ EBioMedicine——[11.1] ① 中山大学附属第五医院的李曼团队发表文章，在泛癌水平上全面分析饮食限制（DR）相关分子活动在癌症中的作用，揭示了DR相关分子活动与多种癌症类型的肿瘤免疫之间具有强有力的联系，为进一步利用饮食限制相关分子活动改善癌症治疗效果提供参考；② 提出一种计算方法来量化与DR相关的分子活动，通过对27,320个样本中33种癌症类型和30种正常组织的分析，发现DR相关分子活动与肿瘤免疫反应具有紧密的相关性，具有在多种癌症中预测免疫治疗响应性的潜力；③ DR相关分子活动水平较高的患者表现出更好的总生存率和癌症特异性生存率；④ FZD1和G6PD是两个与DR相关的基因，可作为预测肝细胞癌患者预后的生物标志物。【原文信息】 An integrative pan-cancer analysis of the molecular characteristics of dietary restriction in tumour microenvironment 2024-03-19 , doi: 10.1016/j.ebiom.2024.105078 信达生物结肠癌新辅助疗法拟纳入突破性治疗品种 ① 3月29日，国家药监局药品审评中心官网显示，信达生物IBI310和IBI308两款产品拟纳入突破性治疗品种；② 这两款产品联合作为可切除的微卫星高度不稳定型（MSI-H）或错配修复蛋白缺陷型（dMMR）结肠癌的新辅助治疗；③ IBI310是信达生物自研的抗CTLA-4单抗，而信迪利单抗IBI308是与礼来公司合作研发的抗PD-1单抗；④ 早期研究显示，接受IBI310联合信迪利单抗新辅助治疗的患者病理完全缓解率显著，且未增加额外的安全性风险。【原文信息】信达生物抗CTLA-4单抗+抗PD-1单抗拟纳入突破性治疗品种 2024-03-30 , 医药观澜 Ironwood GLP-2疗法2期临床获积极结果 ① 3月29日，Ironwood公司宣布，其研发的Apraglutide在治疗类固醇难治性胃肠道急性移植物抗宿主病（SR GI aGVHD）患者的2期临床试验中，获得积极结果；② Apraglutide是一款长效GLP-2类似物，去年Ironwood公司以超10亿美元从VectivBio公司手中购得；③ 2期临床结果显示，Apraglutide与标准治疗安全性一致，大多数患者在治疗后第28天和第56天产生应答，且应答在第91天得到维持；④ aGVHD是一种罕见的危及生命的疾病，发生在同种异体造血干细胞移植（HSCT）后，通常影响皮肤、胃肠道和肝脏。【原文信息】速递 | 10亿美元收购核心，GLP-2疗法2期临床结果积极 2024-03-29 , 药明康德恒瑞医药ADC新药SHR-A1904获批临床 ① 3月29日，恒瑞医药发布公告称，已收到国家药监局核准签发的关于阿得贝利单抗注射液和注射用SHR-A1904 《药物临床试验批准通知书》；② SHR-A1904是针对Claudin18.2的抗体药物偶联物（ADC），目前在中国、美国、澳大利亚正进行1期临床试验；③ Claudin18.2是一种高特异性的细胞表面分子，在胃癌、胰腺癌、食管癌等瘤种上高表达；④ 阿得贝利单抗注射液已于2023年3月获批上市，用于治疗广泛期小细胞肺癌。【原文信息】恒瑞医药:恒瑞医药关于子公司获得药物临床试验批准通知书的公告 2024-03-29 , 东方财富网天港医诺TGI-5单抗1期临床IND获批 ① 3月22日，合肥天港医诺公司宣布，旗下TGI-5单抗在研管线1期新药临床研究申请（IND），获得国家药监局批准；② TGI-5已于2023年11月30日获得美国FDA临床试验默示许可，国内外尚无同靶点的产品获批上市；③ TGI-5是一种新型免疫检查点单抗药物，拟治疗肝癌、结直肠癌和肺癌等，具有高抗肿瘤活性和良好成药性；④ 天港医诺拥有ABC-NKer技术平台和10余项产品管线，其中半数以上已完成临床前研究，并已完成Pre-A轮融资。【原文信息】天港医诺TGI-5单抗IND获批，成为全球首个同靶点创新药物 2024-03-28 , 触界生物 NOOSIO诺希奥正式进军中国营养膳食市场 ① 近日，美国高端营养品牌NOOSIO诺希奥宣布正式进军中国营养膳食市场；② NOOSIO诺希奥创立于2019年，致力于研发精准匹配各类人群的高品质营养产品；③ 其产品线涵盖了基础营养补充、体重管理、运动恢复、特殊人群营养强化等多个领域，满足现代人多元化健康需求；④ 其产品获美国霍华德休斯医学研究所认证，被推荐为美国麻省总医院的指定用品；⑤ NOOSIO诺希奥将与中国本土科研机构合作，通过线上线下全渠道营销模式服务中国消费者。【原文信息】 NOOSIO营养品牌，正式进军中国营养膳食市场 2024-03-25 , 中华网感谢本期日报的审核者：RZN，Johnson，九卿臣，注册营养师陈彬林，章台柳，Richard，lxx 点击阅读过去10天的日报： 0330 | Akk菌或是免疫性肾病帮凶？Science子刊揭示机制 0329 | 33页综述纵论：超加工食品健康转型的新策略 0328 | Science子刊：锁定肠道中让病毒逃脱免疫的"避风港" 0327 | 10文聚焦菌群-肠-脑轴研究新进展 0326 | 100分综述详解：IBD细胞因子疗法最前沿 0325 | 大肠癌患病为何年轻化？遗传与生活方式的双重影响 0324 | 大型临床试验：补钙补D如何影响老年女性长期健康？ 0323 | Lancet+JAMA领衔，聚焦炎症性肠病诊断与治疗 0322 | 陈豪燕/洪洁等Cell子刊：免疫治疗对老年人更有效，肠道菌群或是隐藏功臣 0321 | 今日Nature双发：促肠癌菌和宿主-菌群互作研究均有新突破

临床结果临床研究

2022-10-14

·World Pharma News

Possible target for treating and preventing osteoarthritis found in little-studied protein

Wear and tear on joints can lead to inflammation, breakdown of cartilage and development of osteoarthritis. Scientists at UF Scripps Biomedical Research have found a possible new target to fight this painful cascade. In a study published Thursday in the journal PLOS One,biochemist Patrick Griffin, Ph.D., and colleague Mi Ra Chang, Ph.D., describe a specific protein that manages activities within chondrocytes, a critical cell type that maintains healthy cartilage in joints. As people age and stress their joints, their chondrocytes begin to fail. The UF Scripps team found that activating a specific protein in these cells called ROR (beta) could restore multiple factors needed for smooth joints to healthier levels, helping to control inflammation. Activating ROR could thus present a useful new strategy to prevent or delay development of the degenerative joint disease osteoarthritis, said Griffin, a professor of molecular medicine and scientific director of UF Scripps Biomedical Research. "People need an osteoarthritis medication that addresses the root cause of cartilage damage and depletion as there currently are no disease-modifying drugs for what is the No. 1 cause of disability in the United States," Griffin said. "While our work is in the early stages, our study suggests that the nuclear receptor ROR could present a novel therapeutic target to protect cartilage damage and perhaps turn on cartilage regeneration." ROR, short for "retinoic acid receptor-related orphan receptor beta," is a type of protein called a nuclear receptor. In our cells, genes switch between periods of activity and inactivity. When nuclear receptors bind to DNA, that activates the cells process of transcribing genes into proteins. ROR has been linked to development of the eyes retina during fetal growth, and it can influence circadian rhythms by controlling clock genes. But its role in maintaining cartilage health was unclear. Griffin has studied causes of bone diseases for many years. He zeroed in on ROR for several reasons. While few studies have been focused on this receptor, some had shown correlation between the receptor's activity and bone loss. So he and Chang set out to better understand it. Chang engineered cell lines to enable the studies. "To our surprise, the gene program upregulated by increase in ROR activity was supportive of the formation of chondrocytes, anti-inflammatory, and protective against cartilage degradation," Chang said. Griffin said the team has launched additional studies because of the enormous need for osteoarthritis solutions. In the United States, an estimated 32 million people live with the painful condition. "This study suggests ROR could be an attractive therapeutic target. However, there's much more we need to unravel," Griffin said. "Specifically, we want to understand more about the mechanism by which ROR impacts chondrocytes and blunts the inflammatory signals that lead to cartilage destruction." Chang MR, Griffin PR. ROR modulates a gene program that is protective against articular cartilage damage. PLoS One. 2022 Oct 13;17(10):e0268663. doi: 10.1371/journal.pone.0268663