The use of adipose-derived cells as a treatment for a variety of diseases is becoming increasingly common. These therapies include the use of cultured mesenchymal stem cells (MSCs) and freshly isolated stromal vascula...The use of adipose-derived cells as a treatment for a variety of diseases is becoming increasingly common. These therapies include the use of cultured mesenchymal stem cells (MSCs) and freshly isolated stromal vascular fraction (SVF) alone, or in conjunction with other cells such as adipocytes. There is a substantial amount of literature published on the therapeutic properties of MSCs and their secretions as the main driver of their therapeutic effect. However, there is little data available on the therapeutic potential of secretions from SVF, either with or without adipocytes. We investigated the ability of secretions from human adipose SVF alone and the SVF co-cultured with adipocytes as a proxy for cell therapy, to ameliorate an inflammatory disorder. This ethics approved study involved the treatment of collagen antibody-induced arthritis (CAIA) in mice with secretions from SVF, SVF co-cultured with adipocytes, or a vehicle control via both intravenous (IV) and intramuscular (IM) routes. Treatment outcome was assessed by paw volume, ankle size and clinical arthritis score measurements. Serum samples were obtained following euthanasia and analysed for a panel of 32 mouse cytokines and growth factors. The dose and timing regime used for the IM administration of both human secretion mixtures did not significantly ameliorate arthritis in this model. The IV administration of SVF adipocyte co-culture secretions reduced the paw volume, and significantly reduced the ankle size and clinical arthritis score when compared to the IV vehicle control mice. This was a superior therapeutic effect than treatment with SVF secretions. Furthermore, treatment with SVF adipocyte coculture secretions resulted in a significant reduction in serum levels of key cytokines, IL-2 and VEGF, involved in the pathogenesis of rheumatoid arthritis. Therefore, the SVF cocultured with adipocytes is an attractive therapeutic for inflammatory conditions.展开更多
目的探讨病原相关模式分子（PAMPs）对抗体诱导的关节炎（CAIA）样小鼠模型建立的影响。方法 7~8周龄Balb/c雌鼠,第0天使用抗体混合物诱导,第3天使用LPS（TLR4激动剂）或Cp G ODN 1826（TLR9激动剂）激发,每天定时观察四肢关节发病情况...目的探讨病原相关模式分子（PAMPs）对抗体诱导的关节炎（CAIA）样小鼠模型建立的影响。方法 7~8周龄Balb/c雌鼠,第0天使用抗体混合物诱导,第3天使用LPS（TLR4激动剂）或Cp G ODN 1826（TLR9激动剂）激发,每天定时观察四肢关节发病情况并进行关节评分;小鼠腹腔注射O111：B4和O55：B5,绘制生存曲线进行毒性分析;ELISA检测PAMPs刺激小鼠巨噬细胞后IL-6、TNF-α的分泌水平;鲎实验定量检测相同浓度下O111：B4和O55：B5的有效活性。结果 PAMPs成功激发CAIA模型炎症,其中O55：B5低死亡率、高成模率;O111：B4的毒性强于O55：B5;O55：B5的炎症因子分泌量显著高于O111：B4和Cp G ODN 1826（P〈0.01）;O111：B4的有效活性显著高于O55：B5（P〈0.01）。结论低毒高致炎性的O55：B5激发模型效果最佳,说明PAMPs能够影响建模效果,而低毒高致炎性PAMPs适合该模型的激发。展开更多
文摘The use of adipose-derived cells as a treatment for a variety of diseases is becoming increasingly common. These therapies include the use of cultured mesenchymal stem cells (MSCs) and freshly isolated stromal vascular fraction (SVF) alone, or in conjunction with other cells such as adipocytes. There is a substantial amount of literature published on the therapeutic properties of MSCs and their secretions as the main driver of their therapeutic effect. However, there is little data available on the therapeutic potential of secretions from SVF, either with or without adipocytes. We investigated the ability of secretions from human adipose SVF alone and the SVF co-cultured with adipocytes as a proxy for cell therapy, to ameliorate an inflammatory disorder. This ethics approved study involved the treatment of collagen antibody-induced arthritis (CAIA) in mice with secretions from SVF, SVF co-cultured with adipocytes, or a vehicle control via both intravenous (IV) and intramuscular (IM) routes. Treatment outcome was assessed by paw volume, ankle size and clinical arthritis score measurements. Serum samples were obtained following euthanasia and analysed for a panel of 32 mouse cytokines and growth factors. The dose and timing regime used for the IM administration of both human secretion mixtures did not significantly ameliorate arthritis in this model. The IV administration of SVF adipocyte co-culture secretions reduced the paw volume, and significantly reduced the ankle size and clinical arthritis score when compared to the IV vehicle control mice. This was a superior therapeutic effect than treatment with SVF secretions. Furthermore, treatment with SVF adipocyte coculture secretions resulted in a significant reduction in serum levels of key cytokines, IL-2 and VEGF, involved in the pathogenesis of rheumatoid arthritis. Therefore, the SVF cocultured with adipocytes is an attractive therapeutic for inflammatory conditions.
文摘目的探讨病原相关模式分子（PAMPs）对抗体诱导的关节炎（CAIA）样小鼠模型建立的影响。方法 7~8周龄Balb/c雌鼠,第0天使用抗体混合物诱导,第3天使用LPS（TLR4激动剂）或Cp G ODN 1826（TLR9激动剂）激发,每天定时观察四肢关节发病情况并进行关节评分;小鼠腹腔注射O111：B4和O55：B5,绘制生存曲线进行毒性分析;ELISA检测PAMPs刺激小鼠巨噬细胞后IL-6、TNF-α的分泌水平;鲎实验定量检测相同浓度下O111：B4和O55：B5的有效活性。结果 PAMPs成功激发CAIA模型炎症,其中O55：B5低死亡率、高成模率;O111：B4的毒性强于O55：B5;O55：B5的炎症因子分泌量显著高于O111：B4和Cp G ODN 1826（P〈0.01）;O111：B4的有效活性显著高于O55：B5（P〈0.01）。结论低毒高致炎性的O55：B5激发模型效果最佳,说明PAMPs能够影响建模效果,而低毒高致炎性PAMPs适合该模型的激发。
