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lncRNA - Long Non-coding RNAs02:39

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siRNA Screening to Identify Ubiquitin and Ubiquitin-like System Regulators of Biological Pathways in Cultured Mammalian Cells
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LncRNA CamK-A Regulates Ca

Ling-Jie Sang1, Huai-Qiang Ju2, Guang-Ping Liu3

  • 1College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China.

Molecular Cell
|September 18, 2018
PubMed
Summary
This summary is machine-generated.

A novel long noncoding RNA, CamK-A, drives cancer progression by activating calcium-dependent signaling pathways. Targeting CamK-A shows promise for cancer therapy and as a biomarker.

Keywords:
Ca(2+)LncRNANF-κBPDXcancerglycolysismetabolismsignal transductiontumor microenvironment

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Area of Science:

  • Molecular Oncology
  • Cancer Biology
  • Cell Signaling

Background:

  • Cancer cells adapt metabolically and remodel their microenvironment for survival.
  • Calcium (Ca2+) flux and Ca2+-dependent signaling are critical in cancer progression, but mechanisms are unclear.

Purpose of the Study:

  • To identify novel molecular players in cancer progression and microenvironment remodeling.
  • To elucidate the role of long noncoding RNAs (lncRNAs) in Ca2+-dependent signaling in cancer.

Main Methods:

  • RNA screening to identify key lncRNAs.
  • Investigated the mechanism of CamK-A in cancer cell signaling.
  • Utilized human-patient-derived xenograft (PDX) models.
  • Analyzed clinical patient data for CamK-A expression correlation.

Main Results:

  • Identified CamK-A (lncRNA for calcium-dependent kinase activation) as highly expressed in multiple human cancers.
  • CamK-A activates PNCK, leading to IκBα phosphorylation and calcium-dependent nuclear factor κB (NF-κB) activation.
  • CamK-A promotes tumor microenvironment remodeling, including macrophage recruitment and angiogenesis.
  • Targeting CamK-A in PDX models significantly impaired tumor development.

Conclusions:

  • CamK-A is a key regulator of Ca2+-triggered signaling in cancer, promoting tumor progression and microenvironment remodeling.
  • CamK-A expression correlates with CaMK-NF-κB axis activation and poor patient survival.
  • CamK-A represents a potential therapeutic target and prognostic biomarker for cancer.