Cell motility in fibroblast aggregates

Author:

Armstrong M.T.,Armstrong P.B.

Abstract

The stable arrangements of cells in tissues and organs require that most tissue cells, whatever their inherent abilities for active pseudopod-directed locomotion, remain confined to the boundaries of their parent tissues and organs for the lifetime of the organism. Contact inhibition of motility represents a potential mechanism for immobilizing cells in tissues and thus in promoting positional stability. In order to assess the effectiveness of contact inhibition in immobilizing cells in 3-dimensional tissue-like masses, spherical aggregates of chick heart, sclera and skin fibroblasts were fused with tritiated thymidine-labelled aggregates of the identical cell type. After being placed in contact, the 2 aggregates cohere and broaden the area of mutual contact to form a single aggregate with a planar interface between the two. Mobility of cells was detected by the migration of labelled cells across the interface and into the unlabelled aggregate. Based on measurements of distances moved in day-old aggregate pairs, it was found that fibroblasts moved up to 17 cell diameters and up to 36% as far in solid tissue masses as in monolayer culture under optimal conditions for directed migration.

Publisher

The Company of Biologists

Subject

Cell Biology

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3