非编码RNA:治疗策略与递送系统
Non-coding RNAs: Therapeutic Strategies and Delivery Systems.
作者信息
Ling Hui
机构信息
Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
出版信息
Adv Exp Med Biol. 2016;937:229-37. doi: 10.1007/978-3-319-42059-2_12.
The vast majority of the human genome is transcribed into RNA molecules that do not code for proteins, which could be small ones approximately 20 nucleotide in length, known as microRNAs, or transcripts longer than 200 bp, defined as long noncoding RNAs. The prevalent deregulation of microRNAs in human cancers prompted immediate interest on the therapeutic value of microRNAs as drugs and drug targets. Many features of microRNAs such as well-defined mechanisms, and straightforward oligonucleotide design further make them attractive candidates for therapeutic development. The intensive efforts of exploring microRNA therapeutics are reflected by the large body of preclinical studies using oligonucleotide-based mimicking and blocking, culminated by the recent entry of microRNA therapeutics in clinical trial for several human diseases including cancer. Meanwhile, microRNA therapeutics faces the challenge of effective and safe delivery of nucleic acid therapeutics into the target site. Various chemical modifications of nucleic acids and delivery systems have been developed to increase targeting specificity and efficacy, and reduce the associated side effects including activation of immune response. Recently, long noncoding RNAs become attractive targets for therapeutic intervention because of their association with complex and delicate phenotypes, and their unconventional pharmaceutical activities such as capacity of increasing output of proteins. Here I discuss the general therapeutic strategies targeting noncoding RNAs, review delivery systems developed to maximize noncoding RNA therapeutic efficacy, and offer perspectives on the future development of noncoding RNA targeting agents for colorectal cancer.
人类基因组的绝大部分被转录为不编码蛋白质的RNA分子,这些分子可能是长度约为20个核苷酸的小分子,即微小RNA(microRNA),或者是长度超过200 bp的转录本,即长链非编码RNA。微小RNA在人类癌症中普遍失调,这立刻引发了人们对其作为药物和药物靶点的治疗价值的兴趣。微小RNA的许多特性,如明确的作用机制和简单的寡核苷酸设计,进一步使其成为治疗开发的有吸引力的候选物。探索微小RNA疗法的大量努力体现在大量基于寡核苷酸的模拟和阻断的临床前研究中,最近微小RNA疗法进入包括癌症在内的几种人类疾病的临床试验达到了顶峰。与此同时,微小RNA疗法面临着将核酸疗法有效且安全地递送至靶位点的挑战。已经开发了各种核酸和递送系统的化学修饰,以提高靶向特异性和疗效,并减少包括激活免疫反应在内的相关副作用。最近,长链非编码RNA因其与复杂而微妙的表型相关联,以及其非常规的药物活性,如增加蛋白质产量的能力,而成为治疗干预的有吸引力的靶点。在此,我讨论针对非编码RNA的一般治疗策略,回顾为最大化非编码RNA治疗效果而开发的递送系统,并对结直肠癌非编码RNA靶向剂的未来发展提供展望。