Laboratoire de Biologie des Entomophages, Université de Picardie Jules Verne, Amiens, France.
Dev Comp Immunol. 2012 Feb;36(2):323-31. doi: 10.1016/j.dci.2011.05.009. Epub 2011 May 31.
We recently reported that most of the Drosophila species of the obscura group were unable to mount cellular capsules and no lamellocyte was ever found in the hemolymph of any of the tested species. Only three species were able to encapsulate, despite lacking lamellocytes. Their encapsulation ability was always associated with the presence of an unpreviously described kind of capsule-forming immunocytes designated as "atypical hemocytes". Here, we describe the ultrastructural and functional characteristics of this type of hemocyte. We show that these cells share many ultrastructural and morphological features with Drosophila melanogaster plasmatocytes, although they are involved in the formation of the external layers of the cellular capsule, a functional property exhibited by lamellocytes in D. melanogaster. Due to the high number of pseudopodes in these cells, we suggest to name them "pseudopodocytes". After structural and functional characterization of these atypical hemocytes, their ambiguous status between plasmatocytes and lamellocytes is discussed.
我们最近报道称，暗褐组的大多数果蝇物种无法形成细胞胶囊，在测试的任何物种的血液中都从未发现过浆血细胞。尽管缺乏浆血细胞，但只有三种物种能够包裹。它们的包裹能力总是与一种以前未描述的被指定为“非典型血细胞”的胶囊形成免疫细胞的存在有关。在这里，我们描述了这种血细胞的超微结构和功能特征。我们表明，这些细胞与黑腹果蝇的浆血细胞在许多超微结构和形态特征上具有相似性，尽管它们参与了细胞胶囊外皮层的形成，这是黑腹果蝇中浆血细胞所表现出的一种功能特性。由于这些细胞中有大量的伪足，我们建议将它们命名为“伪足细胞”。在对这些非典型血细胞进行结构和功能表征后，我们讨论了它们在浆血细胞和浆血细胞之间的模糊状态。
