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Updated: Apr 1, 2026

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR

Published on: May 16, 2012

SPINT2 Deregulation in Prostate Carcinoma.

Márcia Santos Pereira¹, Gisele Caravina de Almeida², Filipe Pinto^3,1

¹ICVS/3B’s– PT Government Associate Laboratory, Braga/Guimarães, Portugal (MSP, FP, MVP, RMR)

The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society

|October 8, 2015

Summary

This summary is machine-generated.

SPINT2, a tumor suppressor, shows reduced expression in prostate cancer (PCa). Promoter hypermethylation does not cause this downregulation, suggesting post-translational regulation of SPINT2 in PCa progression.

Keywords:

SPINT2 methylation prostate carcinoma

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Area of Science:

Oncology
Molecular Biology
Genetics

Background:

SPINT2 acts as a tumor suppressor by inhibiting proteases involved in cancer progression.
Loss of SPINT2 expression in tumors is often linked to gene promoter hypermethylation.
Mechanisms of SPINT2 deregulation in prostate cancer (PCa) remain largely unknown.

Purpose of the Study:

To investigate SPINT2 expression levels in PCa.
To determine if SPINT2 promoter hypermethylation contributes to its downregulation in PCa.

Main Methods:

Immunohistochemistry and methylation-specific PCR on 57 PCa and non-neoplastic tissues.
Bisulfite sequencing and 5-aza-2'-deoxycytidine treatment to assess SPINT2 promoter methylation.
In silico analysis using Oncomine and TCGA databases for SPINT2 mRNA and methylation levels.

Main Results:

SPINT2 expression was reduced in PCa tissues compared to non-neoplastic tissues.
No SPINT2 promoter hypermethylation was detected in any of the analyzed PCa cases.
In silico analyses corroborated the absence of SPINT2 promoter methylation and showed no significant mRNA downregulation.

Conclusions:

SPINT2 is likely involved in PCa tumorigenesis.
Promoter hypermethylation is not the mechanism driving SPINT2 downregulation in PCa.
Post-translational regulation may be responsible for SPINT2 alterations in prostate cancer.