Related Experiment Video
Updated: Aug 3, 2026
10:38
Evaluating the Differentiation Capacity of Mouse Prostate Epithelial Cells Using Organoid Culture
Published on: November 22, 2019
Genetic pattern of prostate cancer progression
T Saric1, Z Brkanac, D A Troyer
1Department of Pathology, University of Texas Health Science Center at San Antonio, 78284-7750, USA.
International Journal of Cancer
|April 3, 1999
Summary
Understanding genetic changes in prostate cancer (CaP) progression is crucial. This study identifies specific genetic alterations in metastatic CaP, offering potential biomarkers for tumor aggressiveness.
Area of Science:
- Oncology
- Genetics
- Cancer Research
Background:
- Genetic alterations in primary prostate cancer (CaP) are well-studied, but mechanisms driving progression to metastatic CaP remain unclear.
- This knowledge gap prevents distinguishing indolent from aggressive tumors.
- Autopsy-derived metastases are rarely analyzed, limiting understanding of CaP progression genetics.
Purpose of the Study:
- To investigate genetic differences between primary prostate cancer and its metastases.
- To identify genetic loci associated with prostate cancer progression and metastatic potential.
- To explore the utility of these genetic alterations as biomarkers for CaP aggressiveness.
Main Methods:
- Comparative analysis of loss of heterozygosity (LOH) profiles.
- Utilized 34 autopsy-derived metastatic CaP tissues.
- Compared LOH in metastases with 17 prostatectomy specimens (primary CaP and high-grade prostatic intraepithelial neoplasia - PIN).
- Analyzed 33 microsatellite markers on various chromosomes, including novel markers for metastatic CaP.
Main Results:
- LOH frequency increased progressively from PIN to primary CaP and metastases.
- Significant LOH in primary CaP occurred at loci on chromosomes 8p, 10q, 11p, 16q, 17p, 18q, and 21q.
- Metastatic CaP showed distinct LOH patterns, with some loci exhibiting up to a 7-fold increase compared to primary tumors.
- Identified novel LOH at D5S806, D6S262, D9S157, D13S133, and D13S227 in metastatic samples.
Conclusions:
- Stage-specific differences in LOH frequencies highlight key genetic loci involved in CaP progression.
- Identified genetic markers associated with metastatic potential.
- These findings could lead to clinically useful biomarkers for predicting CaP aggressiveness.
More Related Videos
12:13Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
Published on: November 19, 2019
07:34Enhancing Prostate Tumor Biobanking Reliability with Improved Sampling Technique and Histological Characterization
Published on: November 17, 2023
Related Concept Videos
02:21Cancers Originate from Somatic Mutations in a Single Cell
Cancer arises from mutations in the critical genes that allow healthy cells to escape cell cycle regulation and acquire the ability to proliferate indefinitely. Though originating from a single mutation event in one of the originator cells, cancer progresses when the mutant cell lines continue to gain more and more mutations, and finally, become malignant. For example, chronic myelogenous leukemia (CML) develops initially as a non-lethal increase in white blood cells, which progressively...
02:07Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
01:33Cancer-Critical Genes I: Proto-oncogenes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
02:59Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
02:07Tumor Progression
Tumor progression is a phenomenon where the pre-formed tumor acquires successive mutations to become clinically more aggressive and malignant. In the 1950s, Foulds first described the stepwise progression of cancer cells through successive stages.
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
01:20Disorders of the Male Reproductive System
Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...