High Cell Diversity and Complex Peptidergic Signaling Underlie Placozoan Behavior
High Cell Diversity and Complex Peptidergic Signaling Underlie Placozoan Behavior
复制标题
高细胞多样性和复杂的肽能信号传导是长生动物行为的基础
DOI:
10.1016/j.cub.2018.08.067
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发表时间:
2018
期刊:
影响因子:
9.2
通讯作者:
Fasshauer D
中科院分区:
文献类型:
--
作者:
Varoqueaux F;Williams EA;Truscello L;Grandemange S;Kamm K;Schierter B;Jékely G;Fasshauer D
Placozoans, together with sponges, are the only animals devoid of a nervous system and muscles, yet both respond to sensory stimulation in a coordinated manner. How behavioral control in these free-living animals is achieved in the absence of neurons and, more fundamentally, how the first neurons evolved from more primitive cells for communication during the rise of animals are not yet understood [1–5]. The placozoanTrichoplax adhaerensis a millimeter-wide, flat, free-living marine animal composed of six morphologically identified cell types distributed across a simple body plan [6–9]: a thin upper epithelium and a columnar lower epithelium interspersed with a loose layer of fiber cells in between. Its genome contains genes encoding several neuropeptide-precursor-like proteins and orthologs of proteins involved in neurosecretion in animals with a nervous system [10–12]. Here we investigate peptidergic signaling inT. adhaerens. We found specific expression of several neuropeptide-like molecules in non-overlapping cell populations distributed over the three cell layers, revealing an unsuspected cell-type diversity ofT. adhaerens. Using live imaging, we discovered that treatments with 11 different peptides elicited striking and consistent effects on the animals' shape, patterns of movement, and velocity that we categorized under three main types: (1) crinkling, (2) turning, and (3) flattening and churning. Together, the data demonstrate a crucial role for peptidergic signaling in nerveless placozoans and suggest that peptidergic volume signaling may have pre-dated synaptic signaling in the evolution of nervous systems.
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影响因子:
3.7
作者:
Eitel M;Osigus HJ;DeSalle R;Schierwater B
通讯作者:
Schierwater B
DOI:
10.1007/978-1-62703-974-1_4
发表时间:
2014-01-01
期刊:
DEVELOPMENTAL BIOLOGY OF THE SEA URCHIN AND OTHER MARINE INVERTEBRATES: METHODS AND PROTOCOLS
影响因子:
--
作者:
Heyland, Andreas;Croll, Roger;Wyeth, Russell
通讯作者:
Wyeth, Russell
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
F. Schulze;F. Schulze;K. Grell;G. Benwitz
通讯作者:
G. Benwitz
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
V. B. Pearse
通讯作者:
V. B. Pearse
影响因子:
11.8
作者:
Hartenstein V;Stollewerk A
通讯作者:
Stollewerk A