Results 71 to 80 of about 2,551,139 (304)

Hybrid speciation in a marine mammal: the clymene dolphin (Stenella clymene).

PLoS ONE, 2014
Natural hybridization may result in the exchange of genetic material between divergent lineages and even the formation of new taxa. Many of the Neo-Darwinian architects argued that, particularly for animal clades, natural hybridization was maladaptive ...
Ana R Amaral, Gretchen Lovewell, Maria M Coelho, George Amato, Howard C Rosenbaum   +4 more
doaj   +1 more source

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

FEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda, Sreerama Chaitanya Sridhara, Aura Carreira   +2 more
wiley   +1 more source

Performance analysis of the partial use of a local optimization operator on the genetic algorithm for the Travelling Salesman Problem

Business Systems Research, 2012
Background: The Travelling Salesman Problem is an NP-hard problem in combinatorial optimization with a number of practical implications. There are many heuristic algorithms and exact methods for solving the problem. Objectives: In this paper we study the
Milan Djordjevic, Marko Grgurovic, Andrej Brodnik   +2 more
doaj  

Revealing chromosomal loci and compositional variations in different ploidy lineages of common carp (♀) × blunt snout bream (♂) via in situ hybridization

Aquaculture Reports
Distant hybridization enhances interspecific gene flow, facilitating emergence of novel species and polyploid lineages. However, investigating the genetic evolutionary relationships between distantly hybridized vertebrate offspring of different ploidy ...
Yalan Zhang, Lan Chen, Hanyu Liu, Yi Fan, Wei Chen, Sijin Fan, Yu Hu, Xinyue Deng, Gaode Zhong, Huan Zhong, Fangzhou Hu, Ming Wen, Wuhui Li, Chang Wu, Qizhi Liu, Shi Wang, Shaojun Liu   +16 more
doaj   +1 more source

Circular RNA expression landscapes in myelodysplastic neoplasms: Associations with mutational signatures and disease progression

Molecular Oncology, EarlyView.
In this explorative study, the abundance of circular RNA molecules in bone marrow stem cells was found to be elevated in patients with high‐risk myelodysplastic neoplasms, and to be associated with an increased risk of progression to acute myeloid leukemia.
Eileen Wedge, Morten Tulstrup, Gabriele Todisco, Pedro Moura, Christophe Côme, Jakob Werner Hansen, Jakob Schmidt Jespersen, Balthasar Schlotmann, Maria Creignou, Mette Dahl, Claudia Schöllkopf, Klas Raaschou‐Jensen, Krister Wennerberg, Bo Porse, Joachim Weischenfeldt, Eva Hellström‐Lindberg, Lasse Sommer Kristensen, Kirsten Grønbæk   +17 more
wiley   +1 more source

Hybridization among three native North American Canis species in a region of natural sympatry. [PDF]

PLoS ONE, 2008
Population densities of many species throughout the world are changing due to direct persecution as well as anthropogenic habitat modification. These changes may induce or increase the frequency of hybridization among taxa.
Frank Hailer, Jennifer A Leonard
doaj   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

Molecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary, Jose Javier Bravo‐Cordero   +1 more
wiley   +1 more source

Natural and Anthropogenic Hybridization in Two Species of Eastern Brazilian Marmosets (Callithrix jacchus and C. penicillata).

PLoS ONE, 2015
Animal hybridization is well documented, but evolutionary outcomes and conservation priorities often differ for natural and anthropogenic hybrids. Among primates, an order with many endangered species, the two contexts can be hard to disentangle from one
Joanna Malukiewicz, Vanner Boere, Lisieux F Fuzessy, Adriana D Grativol, Ita de Oliveira E Silva, Luiz C M Pereira, Carlos R Ruiz-Miranda, Yuri M Valença, Anne C Stone   +8 more
doaj   +1 more source

Developmental programmes drive cellular plasticity, disease progression and therapy resistance in lung adenocarcinoma

Molecular Oncology, EarlyView.
This study shows that lung adenocarcinomas exploit developmental branching morphogenesis to acquire a therapy resistant basal‐like tumour cell state. This process was found to be regulated by combined TP53 loss‐of‐function and type‐I interferon signalling, identifying a novel axis for biomarker and therapeutic target discovery.
Kamila J Bienkowska, Stephany Gallardo, Nur S. Zainal, Leena Arora, Matthew Ellis, Maria‐Antoinette Lopez, Judith Austine, Sai Pittla, Serena J Chee, Aiman Alzetani, Emily C Shaw, Christian H Ottensmeier, Gareth J Thomas, Christopher J Hanley   +13 more
wiley   +1 more source

Chromosomal in situ suppression hybridization of immunologically classified mitotic cells in hematologic malignancies [PDF]

, 1992
Chromosomal in situ suppression (CISS) hybridization was performed with library DNA from sorted human chromosomes 8, 9, 15, 17, 21, and 22 on immunologically stained bone marrow cells of four patients with a hematologic neoplasm, including two patients ...
Knuutila, Sakari, Jotterand Bellomo, Martine, Marianne Tiainen, Tiainen, Marianne, Sakari Knuutila, Tapani Ruutu, Emmerich, Patricia, Cremer, Thomas, Susanne Popp, Martine Jotterand Bellomo, Ruutu, Tapani, Parlier, Valerie, Patricia Emmerich, Popp, Susanne, Thomas Cremer, Valerie Parlier   +15 more
core   +1 more source