Bernardini G, Podini P, Maci R, Camatini M
Dipartimento di Biologia, Università di Milano, Italy.
Mol Reprod Dev. 1990 Aug;26(4):347-55. doi: 10.1002/mrd.1080260409.
Spermatogenesis is a complex morphogenetic process in which microfilaments and microtubules have been shown to play an important role. The last steps of Xenopus spermatogenesis, i.e., the corkscrew shaping of the sperm head, have been followed to study actin and microtubule distribution by conventional and immunoelectron microscopy. During sperm head morphogenesis, actin is absent in the elongating spermatids, but it is present in the Sertoli cells where results localized at the periphery of their cytoplasm that surrounds the developing germ cells. Sertoli cell actin and microtubules may assist the elongation and the shaping of the spermatids and function in maintaining the Sertoli-spermatid association.
精子发生是一个复杂的形态发生过程，其中微丝和微管已被证明发挥重要作用。非洲爪蟾精子发生的最后步骤，即精子头部的螺旋状塑形，已通过传统和免疫电子显微镜进行追踪，以研究肌动蛋白和微管的分布。在精子头部形态发生过程中，伸长的精子细胞中不存在肌动蛋白，但在支持细胞中存在，其结果定位于围绕发育中的生殖细胞的细胞质周边。支持细胞的肌动蛋白和微管可能有助于精子细胞的伸长和塑形，并在维持支持细胞 - 精子细胞关联中发挥作用。
