相关实验视频

Updated: Jul 20, 2025

Author Spotlight: Genetically Engineered Mouse Models and Pathological Characterization of Neurofibromatosis Type 1 Associated Tumors

Author Spotlight: Genetically Engineered Mouse Models and Pathological Characterization of Neurofibromatosis Type 1 Associated Tumors

Published on: May 17, 2024

恶性增殖柱状瘤:对17例病例的临床病理学,免疫组织化学和分子研究

Jakob M T Moran¹, Mia S DeSimone², Adrián Mariño-Enríquez²

¹Department of Pathology, Massachusetts General Hospital, Harvard Medical School.

The American journal of surgical pathology

|July 29, 2023

概括

恶性增殖柱状瘤 (MPPT) 很少见,在生物学上是惰的,转移不频繁. 分子分析表明,状细胞癌的病因途径与状细胞癌不同,通常涉及TP53突变.

科学领域:

皮肤病理学皮肤病理学
在瘤学瘤学.
分子病理学分子病理学

背景情况:

增殖柱状瘤 (BPPT) 是一种罕见的瘤,有可能发生恶性转变.
恶性增殖柱状瘤 (MPPT) 是一个罕见但重要的亚群.
了解MPPT独特的分子和组织病理特征对于准确的诊断和预后至关重要.

研究的目的:

为了比较良性增殖柱状瘤 (BPPT) 和恶性增殖柱状瘤 (MPPT) 的基因病学和分子特征.
确定关键的组织学和分子标记物,与恶性转变和扩散柱状瘤的进展相关.
研究MPPT的潜在病因路径,将其与皮肤状细胞癌区分开来.

主要方法:

对26例BPPT和17例MPPT病例的组织病理学评估.
使用Ki-67和p53.3进行免疫组织化学分析.
在6个MPPT病例中,下一代测序447个癌症基因和191个重排区域.

主要成果:

MPPT表现出特定的组织学特征,包括更大的尺寸,脱质性肌层,不规则的透和细胞学异常.
在MPPT中观察到15q的副本数量增长和6p/6q的损失,与BPPT的发现一致.
在MPPT中发现了频繁的TP53突变,以及较低的瘤突变负担和缺乏紫外线特征,这表明一种独特的发病因子.

结论:

恶性增殖柱状瘤在生物学上是惰的,具有较低的转移潜力,尽管有恶性细胞学特征.
TP53突变作为从良性向恶性增殖柱状瘤的进展的关键分子标记.
MPPT独特的分子形状表明,其病因独立于紫外线辐射,与皮肤状细胞癌不同.

更多相关视频

Establishment of a Clinic-based Biorepository

Establishment of a Clinic-based Biorepository

Published on: May 29, 2017

Comparative Lesions Analysis Through a Targeted Sequencing Approach

Comparative Lesions Analysis Through a Targeted Sequencing Approach

Published on: November 5, 2019

相关概念视频

Abnormal Proliferation

Abnormal 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...

Tumor Progression

Tumor 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...