Results 111 to 120 of about 595,755 (284)

Crosstalk Between CTSB+ Glioblastoma Cells and S100A10+ Macrophages: A Self‐Reinforcing Circuit Promotes Immune Evasion and Limits Response to Immunotherapy

Advanced Science, EarlyView.
In glioblastoma, M2‐polarized macrophages secrete IL‐6, which activates STAT3 signaling in tumor cells to upregulate CTSB. Tumor‐derived CTSB binds the C‐terminus of macrophage S100A10, reinforcing M2 polarization and further IL‐6 secretion, thereby establishing a feedforward IL‐6/STAT3/CTSB/S100A10 loop. This cascade drives tumor growth, invasion, and
Hao Zhang, Nan Zhang, Xisong Liang, Jie Wen, Ziyu Dai, Wantao Wu, Shuyu Li, Songshan Feng, Zaoqu Liu, Zhiwei Xia, Peng Luo, Quan Cheng   +11 more
wiley   +1 more source

qChIP-MS reveals the local chromatin composition by label-free quantitative proteomics

Nature Communications
Chromatin immunoprecipitation (ChIP) has been a cornerstone for epigenetic analyses over the last decades, but even coupled to sequencing approaches (ChIP-seq), it is ultimately limited to one protein at a time. In a complementary effort, we here combine
Wai Khang Yong, Nurkaiyisah Zaal Anuar, Zi Wayne Sin, Elayne Su Ru Tan, Grishma Rane, Xiaoman Shao, Chai Yeen Goh, Vartika Khanchandani, Vivian L. S. Kuan, Peh Fern Ong, Maya Jeitany, H. Phillip Koeffler, Lih-Wen Deng, Oliver Dreesen, Takaomi Sanda, Dennis Kappei   +15 more
doaj   +1 more source

Rhoifolin Alleviates Ulcerative Colitis by Targeting NMNAT1 and Activating SIRT1‐FOXO1 Signaling to Enhance ILC3s Effector Function

Advanced Science, EarlyView.
Rhoifolin directly targets NMNAT1, thereby activating nicotinamide salvage pathway and promoting intracellular NAD+ biosynthesis. Elevated NAD+ levels enhance SIRT1 activity, leading to FOXO1 deacetylation and nuclear translocation. Nuclear FOXO1 subsequently binds to the IL‐22 promoter, upregulating IL‐22 transcription and potentiating ILC3 effector ...
Hongqiong Yang, Yishu Zhang, Sijia Feng, Xiaoqing Ma, Jiayi Feng, Junwei Wang, Jialin Gao, An Pan, Dapeng Wu, Kang Ding, Caijuan Zheng, Qi Lv, Lihong Hu   +12 more
wiley   +1 more source

PAT-ChIP coupled with laser microdissection allows the study of chromatin in selected cell populations from paraffin-embedded patient samples [PDF]

, 2014
Background: The recent introduction of pathology tissue-chromatin immunoprecipitation (PAT-ChIP), a technique allowing chromatin immunoprecipitation from formalin-fixed and paraffin-embedded (FFPE) tissues, has expanded the application potential of ...
A. Faversani, F. Fusar, M. Ballarini, S. Amatori, S. Minucci, E. Belloni, P.G. Pelicci, AMATORI, STEFANO, FANELLI, MIRCO, S. Bosari, M. Fanelli   +10 more
core   +1 more source

Protocol for in vivo chromatin immunoprecipitation on purified chromatin isolated from mouse liver nuclei

STAR Protocols
Summary: Chromatin immunoprecipitation (ChIP) is used to investigate genome binding by transcription factors, but it can be problematic. We present a protocol to isolate fixed DNA-protein complexes from mouse liver prior to chromatin shearing.
Lei Li, May G. Akl, Scott B. Widenmaier
doaj   +1 more source

Mepce Restrains Ferroptosis in Prostate Cancer Through 7SK–P‐TEFb Pause Control

Advanced Science, EarlyView.
Genome‐wide CRISPR screening identifies MEPCE as a pause‐control regulator that restrains ferroptosis in prostate cancer. MEPCE loss releases P‐TEFb/CDK9 from 7SK snRNP control, enhances RNAPII Ser2 phosphorylation, and accelerates NRF2‐HMOX1‐driven labile iron accumulation and lipid peroxidation, revealing a transcriptional kinetic gate that lowers ...
Tongtong Zhang, Xiangyang Zhan, Jiexiang Zhang, Mingyue Tan, Chuanmin Chu, Guanqun Ju, Xinyu Zhai, Jianyi Gu, Huirong Zhu, Dongliang Xu   +9 more
wiley   +1 more source

Editorial: The Evolving Chromatin and Transcriptional Landscapes—Emerging Methods, Tools and Techniques

Frontiers in Cell and Developmental Biology, 2021
Steve Bilodeau, Steve Bilodeau, Steve Bilodeau, Steve Bilodeau, Christoph Franz Kurat, Jean-Philippe Lambert, Jean-Philippe Lambert, Jean-Philippe Lambert, Jean-Philippe Lambert   +8 more
doaj   +1 more source

Unlocking the chromatin code by deciphering protein–DNA interactions

Molecular Systems Biology, 2016
Characterizing the composition of protein complexes bound to different genomic loci is essential for advancing our mechanistic understanding of transcriptional regulation.
Dalila Bensaddek, Angus I Lamond
doaj   +1 more source

Quantitative ChIP-seq by Adding Spike-in from Another Species

Bio-Protocol, 2018
Chromatin immunoprecipitation followed by sequencing (ChIP-seq) is a routine procedure in the lab; however, epigenome-wide quantitative comparison among independent ChIP-seq experiments remains a challenge.
Kongyan Niu, Rui Liu, Nan Liu
doaj   +1 more source

GM‐CSF Promotes Neutrophil PD‐L1 Expression Through the VEGFR‐2/STAT6/CSF2 Signaling Axis in Oral Squamous Cell Carcinoma

Advanced Science, EarlyView.
VEGFR‐2 signaling in OSCC activates Src–STAT6‐dependent CSF2 transcription, driving tumor‐derived GM‐CSF secretion. GM‐CSF programs neutrophils to express PD‐L1 through STAT5–mTOR/S6K signaling, suppressing cytotoxic CD8+ T cells. This pathway reveals a tumor–neutrophil immune checkpoint circuit that limits anti‐PD‐1 responsiveness in OSCC.
Fangxing Zhu, Yuanhe You, Yiyi Zhang, Yibin Dai, Xinyu Zhou, Yong Fu, Xi Lu, Yingying Huang, Zhihang Zhou, Ronghui Xia, Wutong Ju, Zhaoqi Yuan, Laiping Zhong, Tongchao Zhao   +13 more
wiley   +1 more source