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Crataeva tapia bark lectin (CrataBL) is a chemoattractant for endothelial cells that targets heparan sulfate and promotes in vitro angiogenesis.
Biochimie ( IF 3.3 ) Pub Date : 2019-04-12 , DOI: 10.1016/j.biochi.2019.04.011
Fabricio Pereira Batista 1 , Rodrigo Barbosa de Aguiar 2 , Joana Tomomi Sumikawa 3 , Yara Aparecida Lobo 1 , Camila Ramalho Bonturi 1 , Rodrigo da Silva Ferreira 1 , Sheila Siqueira Andrade 3 , Patrícia Maria Guedes Paiva 4 , Maria Tereza Dos Santos Correia 4 , Carolina Meloni Vicente 1 , Leny Toma 1 , Misako Uemura Sampaio 1 , Thaysa Paschoalin 2 , Manoel João Batista Castello Girão 3 , Jane Zveiter de Moraes 2 , Cláudia Alessandra Andrade de Paula 1 , Maria Luiza Vilela Oliva 1
Affiliation  

Formation of new blood vessels from preexisting ones, a process known as angiogenesis, is one of the limiting steps for success in treatment of ischemic disorders. Therefore, efforts to understanding and characterize new agents capable to stimulate neovascularization are a worldwide need. Crataeva tapia bark lectin (CrataBL) has been shown to have chemoattractant properties for endothelial cells through the stimulation of migration and invasiveness of human umbilical vein endothelial cells (HUVEC) because it is a positively charged protein with high affinity to glycosaminoglycan. In addition, CrataBL increased the production of chondroitin and heparan sulfate in endothelial cells. These findings orchestrated specific adhesion on collagen I and phosphorylation of tyrosine kinase receptors, represented by vascular endothelial growth factor receptor-2 (VEGFR-2) and fibroblast growth factor receptor (FGFR), whose downstream pathways trigger the angiogenic cascade increasing cell viability, cytoskeleton rearrangement, cell motility, and tube formation. Moreover, CrataBL inhibited the activity of matrix metalloproteases type 2 (MMP-2), a protein related to tissue remodeling. Likewise, CrataBL improved wound healing and increased the number of follicular structures in lesioned areas produced in the dorsum-cervical region of C57BL/6 mice. These outcomes altogether indicate that CrataBL is a pro-angiogenic and healing agent.

中文翻译:

Crataeva塔皮树皮凝集素(CrataBL)是内皮细胞的化学引诱剂,其靶向硫酸乙酰肝素并促进体外血管生成。

由先前存在的血管形成新血管(称为血管生成)是成功治疗缺血性疾病的限制步骤之一。因此,在全世界范围内需要努力理解和表征能够刺激新血管形成的新药剂。Crataeva tapia树皮凝集素(CrataBL)已显示出通过刺激人脐静脉内皮细胞(HUVEC)的迁移和侵袭而对内皮细胞具有化学吸引特性,因为它是一种带正电荷的蛋白质,对糖胺聚糖具有很高的亲和力。此外,CrataBL增加了内皮细胞中软骨素和硫酸乙酰肝素的产生。这些发现精心策划了对胶原蛋白I的特异性粘附以及酪氨酸激酶受体的磷酸化,以血管内皮生长因子受体2(VEGFR-2)和成纤维细胞生长因子受体(FGFR)为代表,其下游途径触发血管生成级联反应,从而增加细胞活力,细胞骨架重排,细胞运动和管形成。此外,CrataBL抑制2型基质金属蛋白酶(MMP-2)的活性,该蛋白与组织重塑有关。同样,CrataBL改善了伤口愈合,并增加了C57BL / 6小鼠背颈区域产生的病变区域的卵泡结构数量。这些结果完全表明,CrataBL是促血管生成和愈合剂。CrataBL抑制2型基质金属蛋白酶(MMP-2)的活性,该蛋白与组织重塑有关。同样,CrataBL改善了伤口愈合,并增加了C57BL / 6小鼠背颈区域产生的病变区域的卵泡结构数量。这些结果完全表明,CrataBL是促血管生成和愈合剂。CrataBL抑制2型基质金属蛋白酶(MMP-2)的活性,该蛋白与组织重塑有关。同样,CrataBL改善了伤口愈合,并增加了C57BL / 6小鼠背颈区域产生的病变区域的卵泡结构数量。这些结果完全表明,CrataBL是促血管生成和愈合剂。
更新日期:2019-04-12
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