Features Partner Sites Information LinkXpress hp
Sign In
Advertise with Us

Download Mobile App




Increases in the Appetite Hormone Leptin Linked to Colorectal Cancer

By LabMedica International staff writers
Posted on 03 Aug 2010
Increased levels of the appetite control hormone leptin have been shown to boost growth and development of colorectal tumor stem cells (CTSCs) growing in laboratory cultures.

Investigators at Temple University (Philadelphia, PA, USA) and their colleagues at the Istituto Superiore di Sanità (Rome, Italy) worked with cultures of their previously established and characterized CTSC clones.

They reported in the July 5, 2010, edition of the journal Endrocrine-Related Cancer that these cells expressed the leptin receptor ObR and responded to leptin with cell proliferation, activation of the ERK1/2 and AKT signaling pathways, enhanced growth in soft agar, and improved sphere formation associated with E-cadherin overexpression. More...
Furthermore, leptin counteracted the cytotoxic effects of 5-fluorouracil, a common colon cancer therapeutic agent.

"Since targeting cancer stem cells may be a translationally relevant strategy to improve clinical outcomes, interfering with leptin signaling by targeting leptin receptors might become a novel attractive option for colorectal cancer treatment, particularly in obese patients,” said senior author Dr. Eva Surmacz, associate professor of biology at Temple University.

"It is important to consider that cancer stem cells have been identified in several human malignancies,” said Dr. Monica Bartucci, a senior researcher at the Istituto Superiore di Sanità. "Understanding how cancer stem cells interact with a tumor environment, including hormones like leptin, is likely to have significant implications for treatment management of different cancer types in human patients. We hope, in collaboration with Dr. Surmacz, not only to test the effects of leptin antagonist compounds on colon cancer stem cells but also to study the results of leptin stimulation on cancer stem cells isolated in other cancer tissues.”

Related Links:

Temple University
Istituto Superiore di Sanità



Gold Member
Respiratory Syncytial Virus Test
OSOM® RSV Test
POC Helicobacter Pylori Test Kit
Hepy Urease Test
8-Channel Pipette
SAPPHIRE 20–300 µL
Alcohol Testing Device
Dräger Alcotest 7000
Read the full article by registering today, it's FREE! It's Free!
Register now for FREE to LabMedica.com and get access to news and events that shape the world of Clinical Laboratory Medicine.
  • Free digital version edition of LabMedica International sent by email on regular basis
  • Free print version of LabMedica International magazine (available only outside USA and Canada).
  • Free and unlimited access to back issues of LabMedica International in digital format
  • Free LabMedica International Newsletter sent every week containing the latest news
  • Free breaking news sent via email
  • Free access to Events Calendar
  • Free access to LinkXpress new product services
  • REGISTRATION IS FREE AND EASY!
Click here to Register








Channels

Molecular Diagnostics

view channel
Image: The diagnostic device can tell how deadly brain tumors respond to treatment from a simple blood test (Photo courtesy of UQ)

Diagnostic Device Predicts Treatment Response for Brain Tumors Via Blood Test

Glioblastoma is one of the deadliest forms of brain cancer, largely because doctors have no reliable way to determine whether treatments are working in real time. Assessing therapeutic response currently... Read more

Immunology

view channel
Image: Circulating tumor cells isolated from blood samples could help guide immunotherapy decisions (Photo courtesy of Shutterstock)

Blood Test Identifies Lung Cancer Patients Who Can Benefit from Immunotherapy Drug

Small cell lung cancer (SCLC) is an aggressive disease with limited treatment options, and even newly approved immunotherapies do not benefit all patients. While immunotherapy can extend survival for some,... Read more

Microbiology

view channel
Image: New evidence suggests that imbalances in the gut microbiome may contribute to the onset and progression of MCI and Alzheimer’s disease (Photo courtesy of Adobe Stock)

Comprehensive Review Identifies Gut Microbiome Signatures Associated With Alzheimer’s Disease

Alzheimer’s disease affects approximately 6.7 million people in the United States and nearly 50 million worldwide, yet early cognitive decline remains difficult to characterize. Increasing evidence suggests... Read more

Technology

view channel
Image: Vitestro has shared a detailed visual explanation of its Autonomous Robotic Phlebotomy Device (photo courtesy of Vitestro)

Robotic Technology Unveiled for Automated Diagnostic Blood Draws

Routine diagnostic blood collection is a high‑volume task that can strain staffing and introduce human‑dependent variability, with downstream implications for sample quality and patient experience.... Read more

Industry

view channel
Image: Roche’s cobas® Mass Spec solution enables fully automated mass spectrometry in routine clinical laboratories (Photo courtesy of Roche)

New Collaboration Brings Automated Mass Spectrometry to Routine Laboratory Testing

Mass spectrometry is a powerful analytical technique that identifies and quantifies molecules based on their mass and electrical charge. Its high selectivity, sensitivity, and accuracy make it indispensable... Read more
Copyright © 2000-2026 Globetech Media. All rights reserved.