Review
Plant Sciences
Jiahui Bian, Xiao Su, Xiaoyan Yuan, Yuan Zhang, Jinxing Lin, Xiaojuan Li
Summary: This review focuses on the structural organization, dynamics, and physiological functions of membrane contact sites between the endoplasmic reticulum and various organelles, particularly in plants. Membrane contact sites play a vital role in development and response to stress by facilitating highly dynamic and organized interactions among organelles. The endoplasmic reticulum acts as an architectural scaffold to maintain the spatial distribution of other membrane-bound organelles. Future research directions related to membrane contact sites are also discussed.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Review
Cell Biology
Sara Benhammouda, Anjali Vishwakarma, Priya Gatti, Marc Germain
Summary: Organelles in cells cooperate through membrane contact sites to regulate vital cellular functions, with Mitochondria-Endoplasmic-Reticulum (ER) contact sites (MERCS) playing a crucial role in controlling biological processes by regulating calcium and metabolic homeostasis. Various techniques, including fluorescence-based imaging, have been established to study these contact sites and identify molecular interactions.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Review
Cell Biology
Fei Wu, Rinse de Boer, Ida J. van der Klei
Summary: Membrane contact sites are regions of close proximity between two membranes, and their association is mediated by protein-protein and/or protein-lipid interactions. Peroxisomal membrane contact sites have received little attention compared to other organelles, but recent studies have greatly improved our understanding of their occurrence, composition, and function. Yeast studies have been particularly valuable in advancing our knowledge in this area.
JOURNAL OF CELL SCIENCE
(2023)
Review
Plant Sciences
Pengwei Wang, Patrick Duckney, Erlin Gao, Patrick J. J. Hussey, Verena Kriechbaumer, Chengyang Li, Jingze Zang, Tong Zhang
Summary: Functional regulation and structural maintenance of organelles in plants are crucial for plant development, reproduction, and stress responses. Recent studies have identified proteins that regulate membrane connections in plants, providing insights into the mechanism and function of these connections. The endoplasmic reticulum plays a key role in linking different subcellular compartments in plants, and its membrane contact sites (MCS) and ER-plasma membrane contact sites (EPCS) have been extensively studied. However, plant MCS are different from those in other eukaryotic systems. In this article, we summarize the recent advances in understanding these essential links in plants and discuss their mechanisms and biological relevance.
Review
Cell Biology
Vineet Choudhary, Roger Schneiter
Summary: Lipid droplets (LDs) store metabolic energy in the form of neutral lipids and originate from the endoplasmic reticulum (ER), maintaining contact with it to facilitate protein and lipid exchange. Proper formation of ER-LD junctions is crucial to prevent the formation of aberrant LDs, which can impact lipid homeostasis and lead to lipid storage diseases. The close contacts between LDs, peroxisomes, and mitochondria play a role in metabolic channeling of fatty acids, highlighting the importance of LD contact sites in lipid metabolism.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Review
Cell Biology
Pascal F. Egea
Summary: Eukaryotic cells exhibit exquisite compartmentalization through membrane-bound organelles, with membrane contact sites (MCSs) crucial for non-vesicular lipid trafficking. The endoplasmic reticulum (ER) and mitochondria play key roles in phospholipid biosynthesis and distribution, while proteinaceous tethers at MCSs mediate lipid transfer. Understanding these mechanisms is essential for various cellular processes involving lipid exchange and homeostasis.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Review
Cell Biology
Saeko Aoyama-Ishiwatari, Yusuke Hirabayashi
Summary: Recent studies have shown that organelles do not exist in isolation, but form complex cooperative networks. Mitochondria-endoplasmic reticulum contact sites play crucial roles in regulating various biochemical and signaling functions within cells.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Biology
Tricia T. Nguyen, Gia K. Voeltz
Summary: This study investigates how ER-associated mitochondrial nodes regulate the assembly of fission and fusion machinery on mitochondrial membranes. The researchers identified an ER membrane protein, ABHD16A, as a major regulator of node formation. The absence of ABHD16A results in the failure of fission and fusion machineries to recruit to the nodes, leading to decreased rates of fission and fusion.
Article
Cell Biology
Antoineen J. White, Clare S. Harper, Erica M. Rosario, Jonathan V. Dietz, Hannah G. Addis, Jennifer L. Fox, Oleh Khalimonchuk, Laura L. Lackner
Summary: Num1 is a multifunctional protein involved in mitochondrial tethering and dynein anchoring. It is regulated by changes in metabolic state and plays a crucial role in maintaining mitochondrial morphology and function. Deficiency of Num1 leads to respiratory growth defects, and the dynein anchoring function mediated by Num1 is important for normal growth under respiratory conditions.
JOURNAL OF CELL SCIENCE
(2022)
Article
Multidisciplinary Sciences
Anna Bieber, Cristina Capitanio, Philipp S. Erdmann, Fabian Fiedler, Florian Beck, Chia-Wei Lee, Delong Li, Gerhard Hummer, Brenda A. Schulman, Wolfgang Baumeister, Florian Wilfling
Summary: By combining different research methods, we directly revealed the structural progression of autophagosome biogenesis and organelle interactome within yeast cells. These findings have important implications for understanding the contribution of different membrane sources during autophagy and the forces shaping and driving phagophores.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Neurosciences
Jie Li, Yiqian Ding, Jianhua Zhang, Yating Zhang, Yiduo Cui, Yi Zhang, Shiyang Chang, Yan-Zhong Chang, Guofen Gao
Summary: This study found that brain iron overload has detrimental effects on adult hippocampal neurogenesis, leading to memory decline and anxiety-like behavior. The damage is possibly caused by iron-mediated downregulation of proprotein convertase furin, resulting in decreased maturation of brain-derived neurotrophic factor (BDNF), which affects neural stem cell differentiation. Thus, modulating iron homeostasis and furin expression could be potential therapeutic strategies for neurological diseases.
CNS NEUROSCIENCE & THERAPEUTICS
(2023)
Review
Cell Biology
Amit S. Joshi
Summary: Peroxisomes are vital organelles in cells, generated and maintained through membrane contacts with other organelles, playing a crucial role in normal cellular function.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Review
Cell Biology
Bailey Hewlett, Neha Pratap Singh, Christian Vannier, Thierry Galli
Summary: Membrane contact sites play crucial roles in cell differentiation, plasticity and maintenance, and dysfunction can lead to pathological conditions. Each membrane contact site displays a unique molecular signature, adapted to the functions of different organelles.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Review
Cell Biology
Aurora Gil-Hernandez, Miguel Arroyo-Campuzano, Arturo Simoni-Nieves, Cecilia Zazueta, Luis Enrique Gomez-Quiroz, Alejandro Silva-Palacios
Summary: Membrane contact sites (MCS) are defined as areas of proximity between heterologous or homologous membranes characterized by specific proteins, playing a crucial role in regulating physiological processes such as apoptosis, calcium, and lipid signaling. Recent studies have highlighted the significance of MCS in cancer cells, particularly in calcium and lipid signaling, as well as their role in tumor progression, which may have implications for cancer biology research.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Menno Spits, Iris T. Heesterbeek, Lennard M. Voortman, Jimmy J. Akkermans, Ruud H. Wijdeven, Birol Cabukusta, Jacques Neefjes
Summary: The co-migration of ER with other organelles, facilitated by late endosomes and lysosomes, is a major mechanism controlling ER network architecture. This process alters local ER structure and links late endosomal/lysosomal positioning and mobility to ER network architecture.
Article
Cell Biology
Carlo Randise-Hinchliff, Robert Coukos, Varun Sood, Michael Chas Sumner, Stefan Zdraljevic, Lauren Meldi Sholl, Donna Garvey Brickner, Sara Ahmed, Lauren Watchmaker, Jason H. Brickner
JOURNAL OF CELL BIOLOGY
(2016)
Article
Cell Biology
Donna Garvey Brickner, Varun Sood, Evelina Tutucci, Robert Coukos, Kayla Viets, Robert H. Singer, Jason H. Brickner
MOLECULAR BIOLOGY OF THE CELL
(2016)
Article
Biology
Agustina D'Urso, Yoh-hei Takahashi, Bin Xiong, Jessica Marone, Robert Coukos, Carlo Randise-Hinchliff, Ji-Ping Wang, Ali Shilatifard, Jason H. Brickner
Article
Biology
Min Woo Kim, Wenjing Wang, Mateo I. Sanchez, Robert Coukos, Mark von Zastrow, Alice Y. Ting
Article
Cell Biology
Donna Garvey Brickner, Carlo Randise-Hinchliff, Marine Lebrun Corbin, Julie Ming Liang, Stephanie Kim, Bethany Sump, Agustina DUrso, Seo Hyun Kim, Atsushi Satomura, Heidi Schmit, Robert Coukos, Subin Hwang, Raven Watson, Jason H. Brickner
DEVELOPMENTAL CELL
(2019)
Article
Biology
Robert Coukos, David Yao, Mateo Sanchez, Eric T. Strand, Meagan E. Olive, Namrata D. Udeshi, Jonathan S. Weissman, Steven A. Carr, Michael C. Bassik, Alice Y. Ting
Summary: The study demonstrates that gene perturbation technology combined with HiLITR tool can be used to explore protein trafficking processes by converting protein colocalization into a transcription factor driving expression of selected genes. By using HiLITR with FACS screening, genes that influence the trafficking of mitochondrial and ER tail-anchored proteins were identified, revealing the roles of SUMO E1 component SAE1 and EMC10 in mitochondrial and ER systems.
Article
Cell Biology
Donna Garvey Brickner, Robert Coukos, Jason H. Brickner