Results 51 to 60 of about 18,956 (172)

Asynapsis and unreduced gamete formation in a Trifolium interspecific hybrid

BMC Plant Biology, 2022
Background Unreduced gametes, a driving force in the widespread polyploidization and speciation of flowering plants, occur relatively frequently in interspecific or intergeneric hybrids. Studies of the mechanisms leading to 2n gamete formation, mainly in
Helal A. Ansari, Nicholas W. Ellison, Isabelle M. Verry, Warren M. Williams   +3 more
doaj   +1 more source

Splicing together sister chromatids [PDF]

The EMBO Journal, 2014
Splicing of pre‐mRNAs is a necessary step for expression of the majority of genes in higher eukaryotes, and its regulation through alternative splice site selection shapes their proteomes. Defects in multiple splicing factors result in aberrant mitotic progression, although the molecular basis for this observation has remained elusive. Recent papers in
J. Valcarcel, M. Malumbres
openaire   +2 more sources

Interpretation of in vitro concentration‐response data for risk assessment and regulatory decision‐making: Report from the 2022 IWGT quantitative analysis expert working group meeting

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Quantitative risk assessments of chemicals are routinely performed using in vivo data from rodents; however, there is growing recognition that non‐animal approaches can be human‐relevant alternatives. There is an urgent need to build confidence in non‐animal alternatives given the international support to reduce the use of animals in toxicity ...
Marc A. Beal, Guangchao Chen, Kerry L. Dearfield, Min Gi, Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Alexandra S. Long, David P. Lovell, Barbara L. Parsons, Stefan Pfuhler, John Wills, Andreas Zeller, George Johnson, Paul A. White   +14 more
wiley   +1 more source

Therapeutic Gene Editing: DNA Repair Pathways, Emerging Editors, and Clinical Progress

iNew Medicine, EarlyView.
ABSTRACT The field of gene editing has evolved rapidly over the past decade, progressing from programmable zinc‐finger nucleases (ZFNs) and transcription activator‐like effector nucleases (TALENs) to the widespread adoption of CRISPR‐Cas systems. First‐generation editors catalyzed genome engineering by introducing targeted double‐strand breaks (DSBs ...
Li‐Kuang Tsai, Youcai Xiong, Dongqi Liu, Dongshan Yang, Jifeng Zhang, Jie Xu, Renzhi Han, Y. Eugene Chen   +7 more
wiley   +1 more source

RBMX: A Regulator for Maintenance and Centromeric Protection of Sister Chromatid Cohesion

Cell Reports, 2012
Cohesion is essential for the identification of sister chromatids and for the biorientation of chromosomes until their segregation. Here, we have demonstrated that an RNA-binding motif protein encoded on the X chromosome (RBMX) plays an essential role in
Sachihiro Matsunaga, Hideaki Takata, Akihiro Morimoto, Kayoko Hayashihara, Tsunehito Higashi, Kouhei Akatsuchi, Eri Mizusawa, Mariko Yamakawa, Mamoru Ashida, Tomoko M. Matsunaga, Takachika Azuma, Susumu Uchiyama, Kiichi Fukui   +12 more
doaj   +1 more source

Ashwagandha: Is It Safe? Part 2: A Preclinical Evidence Review

Phytotherapy Research, EarlyView.
ABSTRACT The preclinical evidence for the safety of ashwagandha (Withania somnifera (L.) Dunal, AS) is reviewed, and its preparations (extracts) and constituents, from the general toxicity in animal models to in vitro and cell culture studies, which may elucidate mechanisms of action and explain clinical case reports.
Elizabeth M. Williamson, Thomas Brendler
wiley   +1 more source

Genome-wide mapping of sister chromatid exchange events in single yeast cells using Strand-seq

eLife, 2017
Homologous recombination involving sister chromatids is the most accurate, and thus most frequently used, form of recombination-mediated DNA repair. Despite its importance, sister chromatid recombination is not easily studied because it does not result ...
Clémence Claussin, David Porubský, Diana CJ Spierings, Nancy Halsema, Stefan Rentas, Victor Guryev, Peter M Lansdorp, Michael Chang   +7 more
doaj   +1 more source

Targeting Genome Maintenance Defects of Cancers Using Chain‐Terminating Nucleoside Analogs

Cancer Science, EarlyView.
Nucleoside analogs interfere with DNA replication either by their chain‐terminating properties or by serving as DNA damage on the template. The genome maintenance pathways required to maintain cellular tolerance to each nucleoside analog vary depending on the drug.
Ryotaro Kawasumi, Rubaiat E. Tabassum, Kouji Hirota   +2 more
wiley   +1 more source

Transcription Factor TCF12‐Mediated Maternal Gene Expressions in Mouse Oocyte Are Prerequisites of Successful Fertilisation and Zygotic Genome Activation

Cell Proliferation, EarlyView.
Maternal TCF12 ensures the competence of fertilisation by controlling the expression of Astl and the proper location of cortical granules. Furthermore, maternal TCF12 maintains the phosphatase activity of PP2A by regulating the expression of Arpp19. Oocyte‐specific deletion of Tcf12 leads to fertilisation defects as well as ZGA failure at the 2‐cell ...
Lan‐Rui Cao, Chi Zhang, Zuo‐Qi Deng, Yue‐xin Qiu, Zhao Zhang, Heng‐Yu Fan, Jing Li, Hong‐Bo Wu   +7 more
wiley   +1 more source

SOX30 Governs Synaptonemal Complex Assembly and Homologous Recombination in Male Meiosis

Cell Proliferation, EarlyView.
The transcription factor SOX30 directly binds promoter regions of SYCE1 and SYCE2 to mediate their transcriptional activation, thereby enabling proper assembly of central elements within the synaptonemal complex. Structural destabilisation of the synaptonemal complex in Sox30 KK spermatocytes triggers synaptic discontinuity, impairs homologous ...
Kangle Liu, Wenfeng Zhang, Xiao Jiang, Jianping Chen, Lei Zhu, Zhonghao Zhang, Jing Gu, Lulu Guo, Lin Ao, Qing Chen, Lei Sun, Yuhan Hu, Xin Wang, Yaxin Liu, Jia Cao, Fei Han, Jinyi Liu   +16 more
wiley   +1 more source