Related Experiment Video
Updated: Jul 3, 2026
09:37
Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
Published on: August 25, 2021
Myc-oncogene inactivating effect by proline rich polypeptide (PRP-1) in chondrosarcoma JJ012 cells
Karina Galoian1, Sean Scully, Armen Galoyan
1Department of Orthopedics, Miller School of Medicine, University of Miami, 1600 NW 10th Ave, Suite 8006 (r-2), Miami, FL 33136, USA. kgaloian@med.miami.edu
Neurochemical Research
|July 10, 2008
Summary
Proline-rich polypeptide (PRP-1) shows potential as a chondrosarcoma treatment by inactivating the Myc oncogene. This discovery offers new therapeutic possibilities for this aggressive bone cancer.
Area of Science:
- Biochemistry
- Oncology
- Molecular Biology
Background:
- Proline-rich polypeptide (PRP-1) is a circulating neuropeptide with immunomodulatory and hematopoietic effects.
- Chondrosarcoma is a challenging bone malignancy with limited treatment options, often resistant to conventional therapies.
- Previous research indicated PRP-1 possesses antitumor properties.
Purpose of the Study:
- To investigate the antineoplastic effects of PRP-1 on human chondrosarcoma cells.
- To explore PRP-1's mechanism of action, specifically its impact on oncogene activity.
Main Methods:
- Human chondrosarcoma JJ012 cell line was utilized for in vitro experiments.
- The effect of PRP-1 on Myc oncogene activity and Myc-luc response element was assessed.
Main Results:
- PRP-1 demonstrated significant inactivation of Myc oncogene activity in chondrosarcoma cells.
- PRP-1 treatment reduced Myc-luc response element to control levels, indicating suppression of oncogenic pathways.
- PRP-1 exhibited potent antioncogenic potential against chondrosarcoma.
Conclusions:
- PRP-1 effectively suppresses Myc oncogene activity in human chondrosarcoma cells.
- PRP-1 represents a promising therapeutic candidate for chondrosarcoma treatment.
- Further investigation into PRP-1's antineoplastic capabilities is warranted.
Related Concept Videos
02:23Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
01:06Induced Pluripotent Stem Cells
Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...
Somatic cells are...
03:03mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
01:20The Retinoblastoma Gene
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
01:03Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
01:03Rous Sarcoma Virus (RSV) and Cancer
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...