Related Experiment Video

Updated: Dec 17, 2025

Through the Looking Glass: Time-lapse Microscopy and Longitudinal Tracking of Single Cells to Study Anti-cancer Therapeutics
06:00

Through the Looking Glass: Time-lapse Microscopy and Longitudinal Tracking of Single Cells to Study Anti-cancer Therapeutics

Published on: May 14, 2016

11.4K

TRAF2 Knockdown in Nasopharyngeal Carcinoma Induced Cell Cycle Arrest and Enhanced the Sensitivity to Radiotherapy

Hongyuan Zhu1, Weijun Ding1, Jiaojiao Wu1

  • 1Department of Otolaryngology, Affiliated Tai Zhou Hospital of Wenzhou Medical University, No. 150 Ximen Road, Linhai, Taizhou 317000, China.

Biomed Research International
|June 23, 2020
PubMed

Insights

Tumor necrosis factor receptor-associated factor 2 (TRAF2) promotes nasopharyngeal carcinoma (NPC) growth and proliferation. Silencing TRAF2 inhibits NPC progression and enhances radiosensitivity, suggesting TRAF2 as a therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Signaling

Background:

  • Tumor necrosis factor receptor-associated factor 2 (TRAF2) is a key signaling adaptor protein.
  • The specific role of TRAF2 in nasopharyngeal carcinoma (NPC) pathogenesis is not well understood.

Purpose of the Study:

  • To investigate the biological functions and clinical significance of TRAF2 in nasopharyngeal carcinoma (NPC).
  • To explore the potential of TRAF2 as a therapeutic target for NPC treatment.

Main Methods:

  • TRAF2 expression levels were analyzed in NPC cells.
  • TRAF2 was silenced using shRNA (short hairpin RNA) and overexpressed ectopically.
  • Cell proliferation, colony formation, anchorage-independent growth, and xenograft tumor growth were assessed.
  • Signaling pathway activation (MSK1, CREB, ATF2, AP-1) and cell cycle progression were analyzed.
  • The effect of TRAF2 on radiosensitivity was evaluated.

Main Results:

  • TRAF2 was significantly overexpressed in NPC cells.
  • TRAF2 knockdown suppressed NPC cell proliferation, colony formation, and xenograft tumor growth.
  • TRAF2 overexpression promoted NPC cell proliferation and anchorage-independent growth.
  • TRAF2 deficiency reduced EGF-induced activation of MSK1, CREB, ATF2, and AP-1 transcriptional activity.
  • TRAF2 suppression led to decreased cyclin D1 expression and G0/G1 cell cycle arrest.
  • TRAF2 overexpression correlated with radioresistance, while its knockdown enhanced irradiation potency.

Conclusions:

  • TRAF2 plays a critical role in the development and progression of nasopharyngeal carcinoma.
  • TRAF2 promotes NPC cell proliferation, survival, and resistance to irradiation.
  • Targeting TRAF2 presents a promising therapeutic strategy for NPC prevention and treatment.

More Related Videos

Looking for Driver Pathways of Acquired Resistance to Targeted Therapy: Drug Resistant Subclone Generation and Sensitivity Restoring by Gene Knock-down08:59

Looking for Driver Pathways of Acquired Resistance to Targeted Therapy: Drug Resistant Subclone Generation and Sensitivity Restoring by Gene Knock-down

Published on: December 11, 2017

7.5K
Preparation of Cell-lines for Conditional Knockdown of Gene Expression and Measurement of the Knockdown Effects on E4orf4-Induced Cell Death13:54

Preparation of Cell-lines for Conditional Knockdown of Gene Expression and Measurement of the Knockdown Effects on E4orf4-Induced Cell Death

Published on: October 21, 2012

11.3K

Related Concept Videos

Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
8.5K
Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
5.4K
DNA Damage Can Stall the Cell Cycle02:36

DNA Damage Can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
2.9K
DNA Damage can Stall the Cell Cycle02:36

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
9.9K