Results 31 to 40 of about 2,484,021 (370)

Sex-specific recombination rates and allele frequencies affect the invasion of sexually antagonistic variation on autosomes [PDF]

Journal of Evolutionary Biology 26 (2013) 2428, 2013
The introduction and persistence of novel sexually antagonistic alleles can depend upon factors that differ between males and females. Understanding the conditions for invasion in a two-locus model can elucidate these processes. For instance, selection can act differently upon the sexes, or sex-linkage can facilitate the invasion of genetic variation ...
arxiv   +1 more source

Norepinephrine-stimulated HSCs secrete sFRP1 to promote HCC progression following chronic stress via augmentation of a Wnt16B/β-catenin positive feedback loop

Journal of Experimental & Clinical Cancer Research, 2020
Background Sustained adrenergic signaling secondary to chronic stress promotes cancer progression; however, the underlying mechanisms for this phenomenon remain unclear.
Xia-Hui Lin, Hua-Hua Liu, Shu-Jung Hsu, Rui Zhang, Jie Chen, Jun Chen, Dong-Mei Gao, Jie-Feng Cui, Zheng-Gang Ren, Rong-Xin Chen   +9 more
doaj   +1 more source

Size-dependent functional response of Xenopus laevis feeding on mosquito larvae [PDF]

PeerJ, 2018
Predators can play an important role in regulating prey abundance and diversity, determining food web structure and function, and contributing to important ecosystem services, including the regulation of agricultural pests and disease vectors.
Corey J. Thorp, Mhairi E. Alexander, James R. Vonesh, John Measey   +3 more
doaj   +2 more sources

Use of non-timber forest products from invasive alien Prosopis species (mesquite) and native trees in South Africa: implications for management

Forest Ecosystems, 2015
Background Prosopis species have been introduced to many areas outside their native range to provide benefits to local communities. Several Prosopis species and their hybrids (hereafter “mesquite”) have, however, become naturalised and invasive and now ...
Ross T Shackleton, David C Le Maitre, Brian W van Wilgen, David M Richardson   +3 more
doaj   +1 more source

The invasion of circRNAs [PDF]

RNA Biology, 2017
Single-stranded covalently closed circular RNA (circRNA) molecules come in many disguises, with different biogenesis mechanisms and functions.
Hansen, Thomas B., Kjems, Jørgen
openaire   +4 more sources

CPT1A-mediated fatty acid oxidation promotes cell proliferation via nucleoside metabolism in nasopharyngeal carcinoma

Cell Death and Disease, 2022
As the first rate-limiting enzyme in fatty acid oxidation (FAO), CPT1 plays a significant role in metabolic adaptation in cancer pathogenesis. FAO provides an alternative energy supply for cancer cells and is required for cancer cell survival.
Min Tang, Xin Dong, Lanbo Xiao, Zheqiong Tan, Xiangjian Luo, Lifang Yang, Wei Li, Feng Shi, Yueshuo Li, Lin Zhao, Na Liu, Qianqian Du, Longlong Xie, Jianmin Hu, Xinxian Weng, Jia Fan, Jian Zhou, Qiang Gao, Weizhong Wu, Xin Zhang, Weihua Liao, Ann M. Bode, Ya Cao   +22 more
doaj   +1 more source

Comparative Analysis of Non-Invasive and Invasive Tumor Treatment Fields: A Simulation Study [PDF]

arXiv, 2023
This study compares electric field and temperature distributions between non-invasive and invasive tumor treatment fields (TTFields). We employ four-layer spherical head models, representing the scalp, skull, cerebrospinal fluid, and brain, for simulation analysis.
arxiv  

The dark web trades wildlife, but mostly for use as drugs

People and Nature, 2023
Contemporary wildlife trade is massively facilitated by the Internet. By design, the dark web is one layer of the Internet that is difficult to monitor and continues to lack thorough investigation.
Oliver C. Stringham, Jacob Maher, Charlotte R. Lassaline, Lisa Wood, Stephanie Moncayo, Adam Toomes, Sarah Heinrich, Freyja Watters, Charlotte Drake, Sebastian Chekunov, Katherine G. W. Hill, David Decary‐Hetu, Lewis Mitchell, Joshua V. Ross, Phillip Cassey   +14 more
doaj   +1 more source

Growth of cancer stem cell driven tumors: staged invasion, linear determinacy, and the tumor invasion paradox [PDF]

arXiv, 2023
We study growth of solid tumors in a partial differential equation model introduced by Hillen et al for the interaction between tumor cells (TCs) and cancer stem cells (CSCs). We find that invasion into the cancer-free state may be separated into two regimes, depending on the death rate of tumor cells.
arxiv  

A reciprocal repression between ZEB1 and members of the miR-200 family promotes EMT and invasion in cancer cells

EMBO Reports, 2008
The embryonic programme ‘epithelial–mesenchymal transition’ (EMT) is thought to promote malignant tumour progression. The transcriptional repressor zinc‐finger E‐box binding homeobox 1 (ZEB1) is a crucial inducer of EMT in various human tumours, and was ...
U. Burk, Jörg Schubert, U. Wellner, O. Schmalhofer, E. Vincan, S. Spaderna, T. Brabletz   +6 more
semanticscholar   +1 more source