Banco Bilbao Vizcaya Argentaria (BBVA)-Foundation, Cancer Cell Biology Programme, Centro Nacional de Investigaciones Oncológicas, 28029 Madrid, Spain.
Proc Natl Acad Sci U S A. 2009 Dec 15;106(50):21264-9. doi: 10.1073/pnas.0907550106. Epub 2009 Dec 7.
Although(,) vascular remodeling is a hallmark of many chronic inflammatory disorders such as rheumatoid arthritis, inflammatory bowel disease, and psoriasis, anti-vascular strategies to treat these conditions have received little attention to date. We investigated the anti-inflammatory activity of systemic blockade of VEGF-A by the inhibitory monoclonal antibody G6-31, employing a therapeutic trial in a mouse model of psoriasis. Simultaneous deletion of JunB and c-Jun (DKO*) in the epidermis of adult mice leads to a psoriasis-like phenotype with hyper- and parakeratosis and increased subepidermal vascularization. Moreover, an inflammatory infiltrate and elevated levels of cytokines/chemokines including TNFalpha, IL-1alpha/beta, IL-6, and the innate immune mediators IL-22, IL-23, IL-23R, and IL-12p40 are detected. Here we show that anti-VEGF antibody treatment of mice already displaying disease symptoms resulted in an overall improvement of the psoriatic lesions leading to a reduction in the number of blood vessels and a significant decrease in the size of dermal blood and lymphatic vessels. Importantly, anti-VEGF-treated mice showed a pronounced reduction of inflammatory cells within the dermis and a normalization of epidermal differentiation. These results demonstrate that systemic blockade of VEGF by an inhibitory antibody might be used to treat patients who have inflammatory skin disorders such as psoriasis.
虽然血管重塑是许多慢性炎症性疾病(如类风湿性关节炎、炎症性肠病和银屑病)的标志,但迄今为止,针对这些疾病的抗血管策略并未受到太多关注。我们研究了通过抑制性单克隆抗体 G6-31 对 VEGF-A 的系统阻断在银屑病小鼠模型中的抗炎活性。在成年小鼠的表皮中同时缺失 JunB 和 c-Jun(DKO*)会导致银屑病样表型,表现为过度角化和角化不全以及皮下血管增多。此外,还检测到炎症浸润和细胞因子/趋化因子水平升高,包括 TNFalpha、IL-1alpha/beta、IL-6 以及先天免疫介质 IL-22、IL-23、IL-23R 和 IL-12p40。在这里,我们表明,在已经出现疾病症状的小鼠中使用抗 VEGF 抗体治疗可导致银屑病病变的整体改善,导致血管数量减少和真皮血管和淋巴管大小显著减小。重要的是,抗 VEGF 治疗的小鼠在真皮内的炎症细胞明显减少,表皮分化正常化。这些结果表明,通过抑制性抗体对 VEGF 的系统阻断可能用于治疗患有炎症性皮肤疾病(如银屑病)的患者。