Article
Neurosciences
Avital Horwitz, Ruth Birk
Summary: Bardet-Biedl syndrome (BBS) is an autosomal recessive syndrome characterized by retinal dystrophy, cognitive impairment, and obesity. Our study focused on examining the role of BBS4 in neuronal development under normal and ER stress conditions. BBS4 depletion in neuronal cells leads to reduced sensitivity to ER stress during differentiation, partly due to the failure in translocation of ER-transcription factors (TF) sXBP-1 and ATF6 alpha p50 to the nucleus.
MOLECULAR NEUROBIOLOGY
(2021)
Article
Pharmacology & Pharmacy
Jin-xing Zhu, Wang Ling, Chao Xue, Zhen Zhou, Yi-shuai Zhang, Chen Yan, Mei-ping Wu
Summary: The study aimed to investigate the impact of Higenamine (HG) on chronic cardiac remodeling, particularly cardiac fibrosis. The results showed that HG could alleviate chronic cardiac hypertrophy, fibrosis, and dysfunction by suppressing TGF-β1/Smad signaling and the activation of cardiac fibroblasts (CFs).
EUROPEAN JOURNAL OF PHARMACOLOGY
(2021)
Review
Endocrinology & Metabolism
Ming Yang, Chongbin Liu, Na Jiang, Yan Liu, Shilu Luo, Chenrui Li, Hao Zhao, Yachun Han, Wei Chen, Li Li, Li Xiao, Lin Sun
Summary: The endoplasmic reticulum (ER) is an active organelle involved in various physiological processes. Recent studies have shown that dysfunction of the ER plays a role in the progression of kidney disease, particularly diabetic nephropathy (DN). This review discusses the function of the ER, the regulation of homeostasis through the unfolded protein response (UPR) and ER-phagy, as well as the impact of abnormal ER homeostasis in renal cells in DN. Additionally, potential therapeutic targets for DN related to maintaining ER homeostasis are also explored.
FRONTIERS IN ENDOCRINOLOGY
(2023)
Review
Cell Biology
Ming Yang, Shilu Luo, Xi Wang, Chenrui Li, Jinfei Yang, Xuejing Zhu, Li Xiao, Lin Sun
Summary: The endoplasmic reticulum (ER) is crucial for maintaining cellular homeostasis, and ER-phagy, a selective form of autophagy, helps remove damaged ER to protect cells from harm caused by excessive ER stress. Many receptor-mediated ER-phagy pathways have been discovered in recent years, highlighting the importance of this newly identified autophagy process in maintaining cellular health.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Priya Wadgaonkar, Zhuoyue Bi, Junmei Wan, Yao Fu, Qian Zhang, Bandar Almutairy, Wenxuan Zhang, Yiran Qiu, Chitra Thakur, Maik Huttemann, Fei Chen
Summary: This study investigated the short-term effects of As3+ on ER stress and metabolism in BEAS-2B cells. The results showed that As3+ induced upregulation of glycolysis and mitochondrial respiration, as well as increased expression of certain UPR genes. Nrf2 played a critical role in mediating the As3+-induced expression of UPR genes.
Review
Medicine, Research & Experimental
Yi Kong, Jian Jiang, Yuqiong Huang, Li Li, Xin Liu, Zilin Jin, Fen Wei, Xinxin Liu, Song Zhang, Xiaoru Duan, Yonghui Zhang, Qingyi Tong, Hongxiang Chen
Summary: This review summarizes the research progress on endoplasmic reticulum stress in melanoma and discusses the mechanisms of melanoma pathogenesis and resistance, as well as the potential of targeting endoplasmic reticulum stress or the unfolded protein response process for melanoma therapy.
BIOMEDICINE & PHARMACOTHERAPY
(2022)
Review
Biochemistry & Molecular Biology
Debora Gentile, Marianna Esposito, Paolo Grumati
Summary: Autophagy is a cellular cleaning system that maintains metabolic balance and plays a crucial role in sustaining malignant cellular growth during tumorigenesis.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2022)
Article
Toxicology
Sung Woo Lee, Bokyung Kim, Jung Bae Seong, Young-Ho Park, Hong Jun Lee, Dong-Seok Lee
Summary: In this study, the mechanisms of cadmium exposure-induced endoplasmic reticulum (ER) stress response and apoptosis in spermatocytes were examined. The most significant response to cadmium toxicity was observed in the activating transcription factor 6 (ATF6) pathway. Inhibition of protein expression could reduce apoptosis under stressful conditions. Furthermore, p50ATF6 was found to regulate p38 MAPK phosphorylation, and p-p38 mediated the activity of p50ATF6, suggesting that modulating the activity of p38 MAPK and p50ATF6 can be a potential strategy to treat infertility caused by cadmium exposure.
TOXICOLOGICAL SCIENCES
(2023)
Article
Parasitology
Cudjoe Obed, Minmin Wu, Ying Chen, Ran An, Haijian Cai, Qingli Luo, Li Yu, Jie Wang, Fang Liu, Jilong Shen, Jian Du
Summary: Toxoplasma infection can cause ER stress and apoptosis in host cells. The dense granule protein GRA3 plays a role in the virulence of T. gondii, and it induces neural cell apoptosis via the ER stress signaling pathway.
PARASITES & VECTORS
(2022)
Article
Biochemistry & Molecular Biology
Chang Ho Kang, Eun Seon Lee, Ganesh M. Nawkar, Joung Hun Park, Seong Dong Wi, Su Bin Bae, Ho Byoung Chae, Seol Ki Paeng, Jong Chan Hong, Sang Yeol Lee
Summary: The key regulator of light signaling, COP1, plays a crucial role in plant endoplasmic reticulum stress response by degrading HY5 in the nucleus, facilitating the unfolded protein response activation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Hongqing Zhou, Tingting Zhang, Liang Chen, Fengzhen Cui, Chenxiang Xu, Jiaxi Peng, Weixiang Ma, Jirong Huang, Xia Sheng, Mingsheng Liu, Faming Zhao
Summary: Stress in the endoplasmic reticulum can activate the unfolded protein response and is associated with prostate cancer progression. This study found that ATF6 alpha, one of the UPR sensors, is correlated with prostate cancer development and its inhibition impairs the survival of castration-resistant prostate cancer cells. Transcriptomic analyses revealed the pathways regulated by ATF6 alpha, and gene expression differences were observed between ATF6 alpha knockdown and Ceapin-A7 treatment. Furthermore, analysis of human CRPC bulk RNA-seq and single-cell RNA-seq datasets confirmed that higher ATF6 alpha activity is associated with increased androgen receptor activity, proliferative and neuroendocrine phenotypes, and immunosuppressive features in CRPC tumors.
Article
Cell Biology
Junichi Inaba, Bo Min Kim, Yan Zhao, Andrew M. Jansen, Wei Wei
Summary: Phytoplasma infection disrupts ER homeostasis in tomato plants, leading to abnormal accumulation of ER-resident proteins, disrupted ER network structures, and formation of protein aggregates in the phloem. The ER stress and unfolded protein response (UPR) induced by Phytoplasma infection likely contribute to the host plant's defense mechanisms. Activation of UPR and induction of ER stress decrease phytoplasma titer, while suppression of the ER-resident protein BiP increases phytoplasma titer. Understanding the interactions between phytoplasmas and plant hosts at the subcellular level provides valuable insights for controlling phytoplasma diseases.
Article
Cell Biology
Wayne Carver, Ethan Fix, Charity Fix, Daping Fan, Mrinmay Chakrabarti, Mohamad Azhar
Summary: Studies have shown that emodin can attenuate TGF-beta 1-induced cardiac fibroblast activation and collagen accumulation, and it may function as an effective therapeutic agent for fibrosis through specific TGF-beta signaling pathways.
JOURNAL OF CELLULAR PHYSIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Gehan Botrus, Richard M. Miller, Pedro Luiz Serrano Uson Jr, Geoffrey Kannan, Haiyong Han, Daniel D. Von Hoff
Summary: High levels of ER stress and UPR activation are present in pancreatic cancer, leading to adaptive mechanisms and potential apoptosis. This review discusses the mechanisms by which compounds activate the UPR pathways and induce apoptosis, and explores the potential of ER stress inducers for anti-tumor efficacy in pancreatic cancer. A new approach of increasing ER stress and UPR activation to incite apoptotic cell death in pancreatic cancer is hypothesized.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Junyan Qu, Tingting Zou, Zhenghong Lin
Summary: The endoplasmic reticulum (ER) is crucial for protein synthesis and metabolism in eukaryotic cells. When unfolded proteins exceed the ER's folding capacity due to environmental influences or increased protein synthesis, cells activate the endoplasmic reticulum stress (ER stress) response. The components of the ubiquitin-proteasome system (UPS), E3 ubiquitin ligases and deubiquitinases (DUBs), are closely related to ER stress.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Medicinal
Jonathan E. Palmer, Breanna M. Brietske, Tyler C. Bate, Erik A. Blackwood, Manasa Garg, Christopher C. Glembotski, Christina B. Cooley
ACS MEDICINAL CHEMISTRY LETTERS
(2020)
Review
Biochemistry & Molecular Biology
Winston T. Stauffer, Adrian Arrieta, Erik A. Blackwood, Christopher C. Glembotski
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2020)
Review
Cell Biology
Erik A. Blackwood, Alina S. Bilal, Winston T. Stauffer, Adrian Arrieta, Christopher C. Glembotski
Article
Biochemistry & Molecular Biology
Adrian Arrieta, Erik A. Blackwood, Winston T. Stauffer, Michelle Santo Domingo, Alina S. Bilal, Donna J. Thuerauf, Amber N. Pentoney, Cathrine Aivati, Anup V. Sarakki, Shirin Doroudgar, Christopher C. Glembotski
JOURNAL OF BIOLOGICAL CHEMISTRY
(2020)
Review
Physiology
Christopher C. Glembotski, Adrian Arrieta, Erik A. Blackwood, Winston T. Stauffer
FRONTIERS IN PHYSIOLOGY
(2020)
Article
Cardiac & Cardiovascular Systems
Erik A. Blackwood, Donna J. Thuerauf, Miroslava Stastna, Haley Stephens, Zoe Sand, Amber Pentoney, Khalid Azizi, Tobias Jakobi, Jennifer E. Van Eyk, Hugo A. Katus, Christopher C. Glembotski, Shirin Doroudgar
JOURNAL OF MOLECULAR AND CELLULAR CARDIOLOGY
(2020)
Article
Multidisciplinary Sciences
Erik A. Blackwood, Alina S. Bilal, Khalid Azizi, Anup Sarakki, Christopher C. Glembotski
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2020)
Article
Cardiac & Cardiovascular Systems
Kayleigh G. Marsh, Adrian Arrieta, Donna J. Thuerauf, Erik A. Blackwood, Lauren MacDonnell, Christopher C. Glembotski
Summary: By studying neonatal rat ventricular myocytes, it was discovered that the peroxisomal protein FAR1 is upregulated under ER stress and localizes to peroxisomes in cardiac myocytes, reducing myocyte viability during oxidative stress. This implies that plasmalogens may have maladaptive effects on myocyte viability during oxidative stress.
AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY
(2021)
Letter
Cardiac & Cardiovascular Systems
Alina S. Bilal, Erik A. Blackwood, Donna J. Thuerauf, Christopher C. Glembotski
Article
Cardiac & Cardiovascular Systems
Erik A. Blackwood, Lauren F. MacDonnell, Donna J. Thuerauf, Alina S. Bilal, Victoria B. Murray, Kenneth C. Bedi, Kenneth B. Margulies, Christopher C. Glembotski
Summary: This study reveals that cardiac hypertrophy leads to the accumulation of misfolded proteins in the endoplasmic reticulum (ER), and the protein VIMP plays a crucial role in regulating the ER-associated degradation (ERAD) pathway during cardiac hypertrophy. It was found that knockdown of VIMP increased ERAD and alleviated the pathological changes associated with cardiac hypertrophy. Additionally, a noncanonical form of ERAD, termed ERAD-Out, was identified to degrade SGK1 and promote cardiac hypertrophy.
Review
Cardiac & Cardiovascular Systems
Adrian Arrieta, Erik A. Blackwood, Winston T. Stauffer, Christopher C. Glembotski
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2020)