Article
Neurosciences
Anant Jain, Catherine S. Woolley
Summary: 17β-estradiol (E2) is synthesized in the hippocampus of both sexes and acutely potentiates excitatory synapses in each sex. The mechanisms for initiation of E2-induced synaptic potentiation differ between males and females, including in the molecular signaling involved. In females, synaptic activity and calcium-permeable AMPARs (cpAMPARs) are necessary for expression of E2-induced potentiation, while in males, nonconductive properties of AMPARs play a larger role.
JOURNAL OF NEUROSCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yu Geng, Tingting Huang, Wu Zhou, Lei Shen
Summary: This study investigates the influence of different fluidic lipid membranes on peptide chain aggregation using lipid nanotubules as a model. The results show that fluidic lipid nanotubules promote the diffusion and aggregation of peptide chains, while less fluidic nanotubes restrict their super-diffusion and aggregation.
Article
Chemistry, Multidisciplinary
Xia Zheng, Chuanbiao Zhang, Huimei Cao, Xin Zhou, Zhang Liu, Jianjun Wang
Summary: This study demonstrates that using a small amount of zinc ions instead of high concentration conventional cryoprotective agents can achieve comparable post-thaw recovery rate for red blood cells while avoiding the removal process of cryoprotective agents. The interaction between zinc ions and lipid molecules facilitates the formation of small and dynamic lipid clusters, maintaining the membrane fluidity and enhancing the resilience of cells during cryopreservation.
Article
Biochemistry & Molecular Biology
Alessio Ausili, Illya Yakymenko, Jose A. Teruel, Juan C. Gomez-Fernandez
Summary: Clotrimazole, an azole antifungal drug, was found to affect the transition temperature of phospholipid vesicles and preferentially locate near the C2 and C3 carbons of the fatty acyl chains in the lipid membrane through differential scanning calorimetry and NMR techniques.
Article
Multidisciplinary Sciences
Luize G. Lima, Sunyoung Ham, Hyunku Shin, Edna P. Z. Chai, Erica S. H. Lek, Richard J. Lobb, Alexandra F. Muller, Suresh Mathivanan, Belinda Yeo, Yeonho Choi, Belinda S. Parker, Andreas Moller
Summary: Exosomes secreted by cancer cells play a crucial role in metastasis, with cytokines in the tumor microenvironment binding to exosomes and promoting their uptake by specific cell lineages and organs to enhance metastatic dissemination. This interaction between exosomes and cytokines is a key determinant of cancer progression.
NATURE COMMUNICATIONS
(2021)
Article
Neurosciences
Diego Guidolin, Cinzia Tortorella, Manuela Marcoli, Chiara Cervetto, Guido Maura, Luigi F. Agnati
Summary: It is well known that astrocytes play a significant metabolic role in the nervous tissue and provide trophic support to neurons. Additionally, evidence suggests that astrocytes are important for brain activity through signaling exchange with neurons, mediated by specific receptors and extracellular microvesicles.
Review
Biochemistry & Molecular Biology
Darrell W. Brann, Yujiao Lu, Jing Wang, Gangadhara R. Sareddy, Uday P. Pratap, Quanguang Zhang, Rajeshwar R. Tekmal, Ratna K. Vadlamudi
Summary: Neuron-derived 17β-estradiol (NDE2) plays a key role in regulating synaptic plasticity and memory in the brain, primarily through estrogen receptor-mediated signaling pathways.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Materials Science, Biomaterials
Yi Wang, Tong Lei, Jinghui Zhang, Lei Gong, Yanjie Yang, Xiaolin Ma, Yongqiang Wen, Hongwu Du, Dongdong Qi, Yongzhong Bian, Zhiqiang Liu, Jianzhuang Jiang
Summary: A new two-photon fluorescent viscosity rotor combining an electron-rich unit with an electron-deficient fluorophore was developed for ratiometric two-photon fluorescent detection of intracellular viscosity. The rotor showed sensitive fluorescence responses to changes in viscosity in a methanol/glycerol system, and also displayed good cell imaging performance and targeting ability in living cells.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Biology
Hyun Ji Ha, Hye Lin Chun, So Yeon Lee, Jae-Hee Jeong, Yeon-Gil Kim, Hyun Ho Park
Summary: IRGB10 is a key immune GTPase that plays a critical role in cell autonomous immunity. When bound to GDP, it forms an inactive head-to-head dimer but changes its conformation to activate its membrane-binding and disruptive functions.
COMMUNICATIONS BIOLOGY
(2021)
Article
Biochemical Research Methods
Marco Eigenfeld, Leonie Wittmann, Roland Kerpes, Sebastian Schwaminger, Thomas Becker
Summary: For industrial processes, it is crucial to have a fast, precise, and reliable method for determining the physiological state, particularly viability, of yeast cells. This study examined the impact of magnetic nanoparticles (MNPs) on yeast cell viability and the assay itself, testing two types of yeast cells. The results showed that traditional colorimetric staining was only reliable for cells with good viability, while fluorescence microscopy and flow cytometry-based assays demonstrated high precision and reliability in determining viability, even in the presence of MNPs. Moreover, the study revealed a non-linear relationship between membrane fluidity and yeast cell viability. The use of CFDA and membrane fluidity provided accurate results for both yeast types, allowing for efficient viability determination in experiments involving yeast cell manipulation or separation using MNPs.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Neurosciences
Xiaoqiang Mo, Mengxue Liu, Jihong Gong, Ying Mei, Huidan Chen, Huajun Mo, Xiaofei Yang, Jun Li
Summary: Zinc is essential for normal brain development and physiology, and it regulates synapse formation and transmission. PTPRM gene is identified as a key gene involved in zinc-regulated synapse formation.
FRONTIERS IN MOLECULAR NEUROSCIENCE
(2022)
Article
Chemistry, Analytical
Julius Sefkow-Werner, Elisa Migliorini, Catherine Picart, Dwiria Wahyuni, Irene Wang, Antoine Delon
Summary: We propose a self-calibrated method called pbFFS for characterizing molecules or particles labeled with an unknown distribution of fluorophores. It uses photobleaching as a control parameter to provide information on the distribution of fluorescent labels and estimate the absolute density or concentration of these molecules.
ANALYTICAL CHEMISTRY
(2022)
Article
Medicine, Research & Experimental
Joana A. Loureiro, Stephanie Andrade, Maria Joao Ramalho, Nuno Oliveira, Maria Carmo Pereira
Summary: Terbutaline sulphate is a selective short-acting 132 adrenoceptor agonist used for asthma treatment. Studies on its interaction with cell membranes show an affinity for lipid membranes, influenced by membrane compositions and structures.
Article
Biochemistry & Molecular Biology
Justyna B. Startek, Alina Milici, Robbe Naert, Andrei Segal, Yeranddy A. Alpizar, Thomas Voets, Karel Talavera
Summary: The study demonstrates that TRPA1 channel can sense non-electrophilic compounds by inducing mechanical perturbations in the cell membrane, leading to TRPA1 activation. Non-electrophilic alkylphenols enhance the activation potency of TRPA1 by increasing lipid order and membrane rigidity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Food Science & Technology
Gessirin Sompach, Akkaratch Rodklongtan, Sunee Nitisinprasert, Pakamon Chitprasert
Summary: This study investigated the effect of different combinations of whey protein isolate and sucrose, as well as different temperatures, on the cell membrane fatty acid compositions of Limosilactobacillus reuteri KUB-AC5 and Lactobacillus johnsonii KUNN19-2 during spray drying. The results showed that the combination of whey protein isolate and sucrose improved the survival of L. reuteri KUB-AC5, while whey protein isolate provided the best protection for L. johnsonii KUNN19-2 against changes in protein secondary structures. The study also found a relationship between membrane damage and the shelf-life of microcapsules.
FOOD RESEARCH INTERNATIONAL
(2022)