骨科中的基因治疗:临床前开发与转化中的进展与挑战
Gene Therapy in Orthopaedics: Progress and Challenges in Pre-Clinical Development and Translation.
作者信息
Watson-Levings Rachael S, Palmer Glyn D, Levings Padraic P, Dacanay E Anthony, Evans Christopher H, Ghivizzani Steven C
机构信息
Department of Orthopaedic Surgery and Sports Medicine, University of Florida College of Medicine, Gainesville, FL, United States.
Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, MI, United States.
出版信息
Front Bioeng Biotechnol. 2022 Jun 28;10:901317. doi: 10.3389/fbioe.2022.901317. eCollection 2022.
In orthopaedics, gene-based treatment approaches are being investigated for an array of common -yet medically challenging- pathologic conditions of the skeletal connective tissues and structures (bone, cartilage, ligament, tendon, joints, intervertebral discs etc.). As the skeletal system protects the vital organs and provides weight-bearing structural support, the various tissues are principally composed of dense extracellular matrix (ECM), often with minimal cellularity and vasculature. Due to their functional roles, composition, and distribution throughout the body the skeletal tissues are prone to traumatic injury, and/or structural failure from chronic inflammation and matrix degradation. Due to a mixture of environment and endogenous factors repair processes are often slow and fail to restore the native quality of the ECM and its function. In other cases, large-scale lesions from severe trauma or tumor surgery, exceed the body's healing and regenerative capacity. Although a wide range of exogenous gene products (proteins and RNAs) have the potential to enhance tissue repair/regeneration and inhibit degenerative disease their clinical use is hindered by the absence of practical methods for safe, effective delivery. Cumulatively, a large body of evidence demonstrates the capacity to transfer coding sequences for biologic agents to cells in the skeletal tissues to achieve prolonged delivery at functional levels to augment local repair or inhibit pathologic processes. With an eye toward clinical translation, we discuss the research progress in the primary injury and disease targets in orthopaedic gene therapy. Technical considerations important to the exploration and pre-clinical development are presented, with an emphasis on vector technologies and delivery strategies whose capacity to generate and sustain functional transgene expression is well-established.
在骨科领域,针对一系列常见但医学上具有挑战性的骨骼结缔组织和结构(骨骼、软骨、韧带、肌腱、关节、椎间盘等)的病理状况,基于基因的治疗方法正在研究中。由于骨骼系统保护重要器官并提供负重结构支撑,各种组织主要由致密的细胞外基质(ECM)组成,细胞数量和血管通常很少。由于其功能作用、组成以及在全身的分布,骨骼组织容易受到创伤性损伤,和/或因慢性炎症和基质降解而导致结构破坏。由于环境和内源性因素的综合作用,修复过程往往缓慢,无法恢复ECM的天然质量及其功能。在其他情况下,严重创伤或肿瘤手术造成的大规模损伤超出了身体的愈合和再生能力。尽管多种外源性基因产物(蛋白质和RNA)有可能增强组织修复/再生并抑制退行性疾病,但其临床应用因缺乏安全、有效递送的实用方法而受到阻碍。总体而言,大量证据表明,能够将生物制剂的编码序列转移到骨骼组织中的细胞,以在功能水平上实现长时间递送,从而增强局部修复或抑制病理过程。着眼于临床转化,我们讨论了骨科基因治疗中主要损伤和疾病靶点的研究进展。介绍了对探索和临床前开发很重要的技术考虑因素,重点是载体技术和递送策略,其产生和维持功能性转基因表达的能力已得到充分证实。