欢迎访问《解剖学报》官方网站！今天是
English
整合素CD11a、CD11b和CD11c在大鼠心脏发育中的表达变化
Expression of integrin CD11a, CD11b and CD11c during the rat heart development
目的 探讨整合素CD11a、CD11b和CD11c在大鼠心脏发育中的表达变化。方法 利用免疫组织化学和RT-PCR方法，检测胚胎18d(E18d)、生后5d(P5d)、P19d、P40d及生后1年（P1y）大鼠心肌组织的CD11a、CD11b和CD11c的基因和蛋白表达。结果 免疫组织化学结果显示，大鼠心肌
组织CD11a、CD11b和CD11c表达部位在心肌细胞质内；从E18d到P1y大鼠心肌组织CD11a、CD11b和CD11c的表达逐渐减弱。 RT-PCR显示，CD11a、CD11b、CD11c各组均呈阳性表达。其中CD11a在P5d和P40d间，P5d和 P19d间比较（P>0.05）差异无统计学意义，其他各组间比较差异均有统计
学意义；CD11b在E18d、P5d、P19d和P40d分别比较（P>0.05）差异无统计学意义，其他各组差异均有统计学意义；CD11c各组间差异有统计学意义（P<0.01）。结论 CD11a、CD11b和CD11c在大鼠心肌的发育过程中出现表达量的变化，不同结构的整合素分子在心脏发育过程表现出相似的
表达规律，它们可能对心肌细胞的发育起重要的调控作用。
Objective To study the expression changes of integrins CD11a, CD11b and CD11c during the rat heart development.Methods By using RT-PCR and immunohistochemistry, the genes and the protein expression of CD11a, CD11b and CD11c of rat cardiac
tissue were detected on embryonic day 18(E18d), postnatal 5 days(P5d), postnatal 19 days(P19d), postnatal 40 days(P40d) and postnatal 1 year(P1y). Results Immunohistochemical results showed that CD11a, CD11b and CD11c expressed in cell plasma of rat
heart tissue, and the level of their expression was gradually decreased from E18d to P1y. RT-PCR results showed that the expressions of CD11a, CD11b and CD11c between each group were positive. Among them, the changes of CD11a transcripts were not
significant compared with that of P40d and P19d (P>0.05), and there were significant changes among other groups (P<0.05). The expressions of CD11b on E18d, P5d, P19d and P40d were of no significant changes compared with each other respectively (P>0.05),
and there was statistical significant in the other groups. The expression of CD11c between groups was statistically significant (P<0.01). Conclusion The expression of CD11a, CD11b and CD11c exists a quantity change during the development of the rat myocardium,
and different structures of integrin molecules showed similar expression rules during the heart development, so they may be play an important role on regulation in the development of myocardial cells.
心脏 / 整合素CD / 免疫组织化学 / 反转录-聚合酶链反应 / 大鼠
Heart / Integrin CD / Immunohistochemistry / RT-PCR / Rat
［1］Hynes RO. Integrins: bidirectional, allosteric signaling machines ［J］.Cell, 2002,110(6):673-687.
［2］Vorup-Jensen T, Ostermeier C, Shimaoka M, et al. Structure and allosteric regulation of the αXβ2 integrin I domain［J］. Proc Natl Acad Sci USA, 2003,100(5):1873-1878.
［3］Pham CG, Harpf AE, Keller RS, et al. Striated muscle-specific beta(1D)-integrin and FAK are involved in cardiac myocytehypertrophic response pathway［J］. Am J Physiol Heart Circ Physiol,2000,279 (6): H2916-2926.
［4］Langeggen H, Berge KE, Johnson E, et al. Human umbilical vein endothelial cells express complement receptor 1 (CD35) and complement receptor 4 (CD11c/CD18) in vitro［J］. Inflammation, 2002, 26(3):103-110.
［5］Ross RS, Pham C, Shai SY, et al.Beta1 integrins participate in the hypertrophic response of rat ventricular myocytes［J］. Circ Res,1998,82(11):1160-1172.
［6］Sheppard AM，Onken MD，Rosen GD，et al．Expanding roles for alpha 4 integrin and its ligands in development［J］.Cell Adhes Commun，1994，2(11)：27-43.
［7］Imanaka-Yoshida K，Enomotolwamoto M，Yoshida T，et al. Vinculin, Talin, integrin alpha 6 beta l and laminin can serveas components of attachment complex mediating contraction force transmission from cardiomyocytes to extracellular matri［J］. Cell Motil Cytoskeleton，1999，42(1)：1-11.
［8］Shai SY，Hmpf AE，Babbitt CJ，et al．Cardiac myocyte-specific excision of the beta l integrin gene results in myocardial fibrosis an d cardiac failure［J］．Cir Res，2002，90(4)：458-464.
［9］Moissoglu K, Schwartz MA. Integrin signalling in directed cell Migration［J］.Biol Cell,2006,98(9):547-555.
［10］Chen Ch, Li Y. Integrin expression and its role in embryonic development［J］. Chinese Journal of Anatomy,2006,29(1):118-121. (in Chinese)
陈春,李英.整合素在胚胎发育中的表达及其作用［J］.解剖学杂志,2006,29(1):118-121.
［11］Wu ShY. Integrin and heart development and expression in heart disease research progress［J］.Chinese Journal of Cellular and Molecular Immunology,2005,21(1):82-84. (in Chinese)
吴琛耘.整合素与心脏发育和在心脏疾病中表达的研究进展［J］.细胞与分子免疫学杂志,2005, 21(1):82-84.
市自然科学基金资助项目
/
| 〈 |
|
〉 |
