Article
Biochemistry & Molecular Biology
Matthew Simon, Jiping Yang, Jonathan Gigas, Eric J. Earley, Eric Hillpot, Lei Zhang, Maria Zagorulya, Greg Tombline, Michael Gilbert, Samantha L. Yuen, Alexis Pope, Michael Van Meter, Stephan Emmrich, Denis Firsanov, Advait Athreya, Seyed Ali Biashad, Jeehae Han, Seungjin Ryu, Archana Tare, Yizhou Zhu, Adam Hudgins, Gil Atzmon, Nir Barzilai, Aaron Wolfe, Kelsey Moody, Benjamin A. Garcia, David D. Thomas, Paul D. Robbins, Jan Vijg, Andrei Seluanov, Yousin Suh, Vera Gorbunova
Summary: A variant of the enzyme SIRT6 (centSIRT6) may contribute to human longevity by improving genome maintenance through enhanced mADPr activity and an enhanced interaction with LMNA. This variant is a stronger suppressor of LINE1 retrotransposons, stimulates DNA double-strand break repair more effectively, and kills cancer cells more robustly compared to the wild-type SIRT6. Surprisingly, centSIRT6 exhibits weaker deacetylase activity but stronger mADPr activity.
Article
Allergy
Roshini S. Abraham, Joanna M. Marshall, Hye Sun Kuehn, Cesar M. Rueda, Amber Gibbs, Will Guider, Claire Stewart, Sergio D. Rosenzweig, Huanyu Wang, Sophonie Jean, Mark Peeples, Tiffany King, W. Garrett Hunt, Jonathan R. Honegger, Octavio Ramilo, Peter J. Mustillo, Asuncion Mejias, Monica Ardura, Masako Shimamura
Summary: COVID-19, caused by SARS-CoV-2, can have a significant impact on the immune system. This study evaluated a novel NFKB2 loss of function variant in a 17-year-old male patient and discussed the clinical management of SARS-CoV-2 infection in this context. Despite underlying immune dysfunction, the patient recovered from the infection with intense management.
JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY
(2021)
Article
Immunology
Manfred Fliegauf, Renate Krueger, Sophie Steiner, Leif Gunnar Hanitsch, Sarah Buechel, Volker Wahn, Horst von Bernuth, Bodo Grimbacher
Summary: In a German family, a previously uncharacterized heterozygous NFKB1 missense variant was identified in four members diagnosed with common variable immunodeficiency (CVID). The clinical phenotypes varied among affected family members but supported a disease mechanism provoked by a p105/p50 (haplo)insufficient condition in the presence of the pathogenic NFKB1 variant.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Xin Yang, Maodi Liang, Yihan Tang, Dingling Ma, Menghuan Li, Chenggang Yuan, Yanting Hou, Chaoyue Sun, Jie Liu, Qianqian Wei, Yongsheng Chang, Cuizhe Wang, Jun Zhang
Summary: In the context of obesity, inflammatory cytokines secreted by adipocytes contribute to insulin resistance and play a key role in the development of metabolic syndrome. Our previous study found that the transcription factor KLF7 promotes the expression of p-p65 and IL-6 in adipocytes, but the specific molecular mechanism remains unclear. In this study, we found that the expression of KLF7, PKC?, p-I?B, p-p65, and IL-6 was significantly increased in epididymal white adipose tissue (Epi WAT) of mice fed a high-fat diet (HFD). However, in KLF7 fat conditional knockout mice, the expression of PKC?, p-I?B, p-p65, and IL-6 was significantly decreased in Epi WAT. In 3T3-L1 adipocytes, KLF7 promotes the expression of IL-6 through the PKC?/NF-?B pathway. Furthermore, luciferase reporter and chromatin immunoprecipitation assays confirmed that KLF7 upregulates the expression of PKC? transcripts in HEK-293T cells. Together, our results demonstrate that KLF7 promotes the expression of IL-6 by upregulating PKC? expression and activating the NF-?B signaling pathway in adipocytes.
Article
Agriculture, Multidisciplinary
Fang Wang, Yuanrong Chen, Kiyoshi Itagaki, Bin Zhu, Yajuan Lin, Haizhao Song, Luanfeng Wang, Ling Xiong, Zebin Weng, Xinchun Shen
Summary: Wheat-germ-derived peptide APEPEPAF (APE) has protective properties against ulcerative colitis by regulating the PKC zeta/NF-kappa B signaling pathway, preserving colon barrier function, and improving intestinal flora imbalance.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Geriatrics & Gerontology
Yaqun Huang, Ming-Xia Ge, Yu-Hong Li, Jing-Lin Li, Qin Yu, Fu-Hui Xiao, Hong-Shun Ao, Li-Qin Yang, Ji Li, Yonghan He, Qing-Peng Kong
Summary: This study found that long-lived individuals have lower inflammation levels and higher expression of ATF7. Loss of ATF7 leads to cellular senescence, while its overexpression delays senescence progress and secretion of senescence-associated secretory phenotype. These findings suggest that ATF7 is a longevity-promoting factor that lowers cellular senescence and inflammation in long-lived individuals.
Article
Geriatrics & Gerontology
Yaqun Huang, Ming-Xia Ge, Yu-Hong Li, Jing-Lin Li, Qin Yu, Fu-Hui Xiao, Hong-Shun Ao, Li-Qin Yang, Ji Li, Yonghan He, Qing-Peng Kong
Summary: This study found that long-lived individuals have lower inflammation levels and up-regulation of ATF7. Overexpression of ATF7 can delay cellular senescence and inhibit inflammation, thus promoting longevity.
Article
Biology
Junxiao Ren, Zhengzheng Hu, Quanlin Li, Shuang Gu, Fangren Lan, Xiqiong Wang, Jianbo Li, Junying Li, Liwa Shao, Ning Yang, Congjiao Sun
Summary: Chicken embryonic diapause is a state of temporary arrest of embryonic development triggered by cold stress-induced IRF1 expression, mediated by the PKC-NF-kappa B signaling pathway. This is in contrast to mammalian diapause which is mTOR-dependent. The study characterized the dynamic transcriptomic and phosphoproteomic profiles of chicken embryos in different diapause states and identified key regulators of diapause.
Article
Biochemistry & Molecular Biology
Lei Xu, Yangfan Ye, Zeqiang Tao, Tian Wang, Yutian Wei, Wanzhi Cai, Xin Wan, Pengzhan Zhao, Wei Gu, Bin Gu, Liuchao Zhang, Yufei Tian, Ning Liu, Yiming Tu, Jing Ji
Summary: This study elucidated the role of MLPH in GBM radiation resistance, showing that MLPH promotes radiotherapy resistance by regulating the NF-kappa B pathway. Additionally, O-GlcNAcylation of MLPH protects it from degradation and stabilizes its presence in cells. These findings provide insights into a potential mechanism of GBM radiation resistance and suggest a therapeutic strategy for GBM treatment.
Review
Biochemistry & Molecular Biology
Ruben Queiro, Pablo Coto, Leire Gonzalez-Lara, Eliecer Coto
Summary: Psoriasis is a genetic disease with genetic factors explaining 70% of disease susceptibility. The condition is often accompanied by comorbidities such as arthritis and cardiometabolic issues. The NF-κB pathway plays a crucial role in understanding the etiology and pharmacological response of psoriatic disease.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Pharmacology & Pharmacy
Jiqiao Yuan, Xuyu Li, Nan Fang, Ping Li, Ziqian Zhang, Mingbao Lin, Qi Hou
Summary: The study found that Perilla frutescens extract has a significant inhibitory effect on COPD airway inflammation, reducing inflammatory cell infiltration in lung tissue and levels of inflammatory mediators in BALF. In vitro, it inhibited the production of inflammatory factors and ROS. The potential mechanism involved the TLR4/Syk/PKC/NF-kappa B p65 signaling pathway.
FRONTIERS IN PHARMACOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Eijiro Jimi, Takenobu Katagiri
Summary: The NF-kappa B transcription factor family plays important roles in inflammation, immune response, and bone metabolism. Its activation occurs through different pathways and is crucial for osteoclast differentiation. Recent studies have identified genetic mutations in NF-kappa B signaling molecules associated with diseases like osteopetrosis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Medicinal
Jingge Xu, Yan Wang, Zhen Wang, Lanping Guo, Xinpeng Li
Summary: The study investigated the effects of sulfated polysaccharides from Laminaria japonica on diabetic nephropathy symptoms, showing that the polysaccharides regulate diabetic nephropathy through the PKC/NF-kappa B pathway.
PHYTOTHERAPY RESEARCH
(2021)
Article
Plant Sciences
Fei-Ting Hsu, Wei-Lin Liu, Sin-Rong Lee, Long-Bin Jeng, Jiann-Hwa Chen
Summary: Researchers have found that magnolol, a compound derived from Magnolia officinalis, shows potential in the treatment of bladder cancer. Through a series of experiments, it was discovered that magnolol can inhibit the development of bladder cancer by activating apoptosis signaling pathways and inhibiting the NF-kappa B pathway. Importantly, magnolol does not exhibit significant toxicity in normal tissues and holds promise as a safe adjunctive therapy.
Article
Cell Biology
Wenfei Pan, Limei Deng, Haitao Wang, Vivien Ya-Fan Wang
Summary: The NF-kappa B family of dimeric transcription factors regulate various biological functions. A study has revealed that the atypical I kappa B protein, Bcl3, plays a crucial role in enhancing the population of the p52:p52 homodimer within the NF-kappa B family. Bcl3 competes with other NF-kappa B subunits for efficient p52:p52 homodimer formation, leading to the upregulation of target genes involved in cell proliferation, migration, and inflammation. The aberrant activation of Bcl3 and p52 contributes to cancer.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Article
Biochemical Research Methods
Tulika Kakati, Dhruba K. Bhattacharyya, Jugal K. Kalita, Trina M. Norden-Krichmar
Summary: In this study, a CNN-based model called DEGnext was developed to predict upregulating (UR) and downregulating (DR) genes from RNA-seq cancer datasets. The results showed that DEGnext outperforms traditional machine learning methods and effectively transfers learned feature maps to unseen datasets, which is significant for biomarker research and analysis of other disease datasets.
BMC BIOINFORMATICS
(2022)
Article
Cell Biology
Lei Zhang, Louise E. Pitcher, Vaishali Prahalad, Laura J. Niedernhofer, Paul D. Robbins
Summary: This review discusses the approaches to identify senolytics, including bioinformatic analysis, compound screening, and prodrug strategies. It also mentions ways to optimize the identified senolytics for better efficacy.
MECHANISMS OF AGEING AND DEVELOPMENT
(2021)
Article
Multidisciplinary Sciences
O. Spadaro, Y. Youm, I Shchukina, S. Ryu, S. Sidorov, A. Ravussin, K. Nguyen, E. Aladyeva, A. N. Predeus, S. R. Smith, E. Ravussin, C. Galban, M. N. Artyomov, V. D. Dixit
Summary: Research indicates that a 14% caloric restriction in healthy individuals can improve immune cell generation and is associated with pathways regulating mitochondrial bioenergetics, anti-inflammatory responses, and longevity. The inhibition of the platelet activating factor acetyl hydrolase gene Pia2g7 may mediate the effects of reducing inflammation and extending healthy lifespan.
Article
Cell Biology
Abhishek Chandra, Anthony B. Lagnado, Joshua N. Farr, Madison Doolittle, Tamara Tchkonia, James L. Kirkland, Nathan K. LeBrasseur, Paul D. Robbins, Laura J. Niedernhofer, Yuji Ikeno, Joao F. Passos, David G. Monroe, Robert J. Pignolo, Sundeep Khosla
Summary: This study demonstrates that cellular senescence-driven radiation-induced osteoporosis is primarily mediated by p21(Cip1) rather than p16(Ink4a), based on the clearance of senescent cells using genetic models. This approach may be used to investigate the contributions of these pathways in other senescence-associated conditions, including aging across tissues.
Article
Immunology
Seungjin Ryu, Sviatoslav Sidorov, Eric Ravussin, Maxim Artyomov, Akiko Iwasaki, Andrew Wang, Vishwa Deep Dixit
Summary: Caloric restriction reduces the risk of chronic diseases caused by aging. The matricellular protein SPARC converts anti-inflammatory macrophages into pro-inflammatory cells and induces interferon-stimulated gene expression. Furthermore, SPARC inhibits mitochondrial respiration and is involved in immunometabolic regulation.
Article
Multidisciplinary Sciences
Dominik Saul, Robyn Laura Kosinsky, Elizabeth J. Atkinson, Madison L. Doolittle, Xu Zhang, Nathan K. LeBrasseur, Robert J. Pignolo, Paul D. Robbins, Laura J. Niedernhofer, Yuji Ikeno, Diana Jurk, Joao F. Passos, LaTonya J. Hickson, Ailing Xue, David G. Monroe, Tamara Tchkonia, James L. Kirkland, Joshua N. Farr, Sundeep Khosla
Summary: The authors present and validate a senescence gene set called SenMayo, which can accurately identify senescent cells across different tissues and species. Using this gene set, senescent cells can be characterized at the single cell level and key intercellular signaling pathways can be identified.
NATURE COMMUNICATIONS
(2022)
Article
Geriatrics & Gerontology
Brenda Gonzalez, Archana Tare, Seungjin Ryu, Simon C. Johnson, Gil Atzmon, Nir Barzilai, Matt Kaeberlein, Yousin Suh
Summary: Mitochondrial dysfunction is a known factor contributing to aging, and this study aims to explore the mechanisms by which mitochondria affect human lifespan. The researchers hypothesize that individuals with exceptional longevity may carry rare variants in nuclear-encoded mitochondrial genes that offer protection against age-related mitochondrial dysfunction. Through their integrated functional genomics study, they identify and prioritize longevity-associated variants, genes, and mitochondrial pathways. The study suggests the functional role of specific mitonuclear genes and pathways in human longevity.
Article
Public, Environmental & Occupational Health
Rachel M. Lucia, Xiyue Liao, Wei-Lin Huang, Danielle Forman, Alexis Kim, Argyrios Ziogas, Trina M. Norden-Krichmar, Deborah Goodman, Andrea Alvarez, Irene Masunaka, Khyatiben Pathak, Marissa McGilvrey, Apurva M. Hegde, Patrick Pirrotte, Hannah Lui Park
Summary: Animal and epidemiologic studies suggest that exposure to glyphosate and its metabolite AMPA may have adverse health effects. Our study examined glyphosate and AMPA levels in the urine of postmenopausal women in Southern California and found that the majority of subjects had detectable levels. Frequent consumption of organic food was associated with lower glyphosate and AMPA levels, but this association was not significant after adjusting for other factors. Grain consumption was associated with higher glyphosate levels, even among those who reported frequently consuming organic grains. Soy protein and alcohol consumption, as well as high frequency of fast food consumption, were associated with higher AMPA levels.
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(2023)
Article
Endocrinology & Metabolism
Jia Y. Wan, Deborah Goodman, Sukh Makhnoon, Trina M. Norden-Krichmar, Baolin Wu, Karen L. Edwards
Summary: The study evaluated clustering of metabolic syndrome (MetS) components in individuals and families across different ancestry groups. The results showed that the prevalence of different combinations of MetS components varied among different ancestry groups. The study concluded that understanding the heterogeneity in MetS clustering could help reduce health disparities.
Review
Medicine, Research & Experimental
Carolina Soto-Palma, Laura J. Niedernhofer, Christopher D. Faulk, Xiao Dong
Summary: Genome integrity erodes over a human lifespan, resulting in an increased abundance of chromatin changes. Age-related epigenetic changes, such as DNA lesions, genomic mutations, and transcriptional disruptions, contribute to genomic instability and can cause gene dysregulation and cell signaling events that disrupt tissue homeostasis and regeneration.
JOURNAL OF CLINICAL INVESTIGATION
(2022)
Article
Gastroenterology & Hepatology
Stanislav Listopad, Christophe Magnan, Aliya Asghar, Andrew Stolz, John A. Tayek, Zhang-Xu Liu, Timothy R. Morgan, Trina M. Norden-Krichmar
Summary: This study successfully identified a small set of diagnostic gene biomarkers and classified several liver diseases using RNA-seq data from liver tissue and PBMCs through a machine learning pipeline. The methodologies implemented in this study may facilitate future efforts toward a liquid biopsy diagnostic for liver diseases.
Review
Medicine, Research & Experimental
Lei Zhang, Louise E. Pitcher, Matthew J. Yousefzadeh, Laura J. Niedernhofer, Paul D. Robbins, Yi Zhu
Summary: Cellular senescence is a key factor in aging and age-related diseases, and targeting senescent cells has shown promise in preventing tissue damage and promoting tissue repair and regeneration.
JOURNAL OF CLINICAL INVESTIGATION
(2022)