Blood Circulating CD133+Extracellular Vesicles Predict Clinical Outcomes in Patients with Metastatic Colorectal Cancer

被引：28

作者：

Brocco, Davide ^{[1
]}

Simeone, Pasquale ^{[2
,3
]}

Buca, Davide ^{[2
,3
]}

Di Marino, Pietro ^{[4
]}

De Tursi, Michele ^{[5
]}

Grassadonia, Antonino ^{[5
]}

De Lellis, Laura ^{[1
]}

Martino, Maria Teresa ^{[4
]}

Veschi, Serena ^{[1
]}

Iezzi, Manuela ^{[3
,6
]}

De Fabritiis, Simone ^{[2
,3
]}

Marchisio, Marco ^{[2
,3
]}

Miscia, Sebastiano ^{[2
,3
]}

Cama, Alessandro ^{[1
]}

Lanuti, Paola ^{[2
,3
]}

Tinari, Nicola ^{[7
]}

机构：

[1] Univ G dAnnunzio, Dept Pharm, I-66100 Chieti, Italy

[2] Univ G dAnnunzio, Dept Med & Aging Sci, I-66100 Chieti, Italy

[3] Univ G dAnnunzio, Ctr Adv Studies & Technol Cast, I-66100 Chieti, Italy

[4] SS Annunziata Hosp, Clin Oncol Unit, I-66100 Chieti, Italy

[5] Univ G dAnnunzio, Dept Innovat Technol Med & Dent, I-66100 Chieti, Italy

[6] Univ G dAnnunzio, Dept Neurosci Imaging & Clin Sci, I-66100 Chieti, Italy

[7] Univ G dAnnunzio, Dept Med Oral & Biotechnol Sci, I-66100 Chieti, Italy

来源：

CANCERS | 2022年 / 14卷 / 05期

关键词：

extracellular vesicles; circulating biomarkers; colorectal cancer; STEM-CELLS; EXTRACELLULAR VESICLES; CD133; MICROVESICLES; POPULATIONS; STATISTICS; SURVIVAL; EXOSOMES;

D O I：

10.3390/cancers14051357

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Simple Summary In this study, we explored the prognostic and predictive value of blood circulating EVs expressing selected surface proteins in patients with metastatic colorectal cancer (mCRC). A recently patented flow cytometry protocol was used for the identification and subtyping of blood circulating EVs in a cohort of patients with stage IV colorectal cancer (n = 54) and in a cohort of healthy controls (n = 48). We observed an increased blood concentration of tumor-induced blood circulating EVs in the mCRC cohort as compared to healthy controls. Additionally, we show an intriguing link between circulating CD133+ EVs and poor clinical outcomes in patients with mCRC. This study provides novel insights about the potential impact of EVs as a relevant source of candidate biomarkers in mCRC. Colorectal cancer (CRC) is one of the most incident and lethal malignancies worldwide. Recent treatment advances prolonged survival in patients with metastatic colorectal cancer (mCRC). However, there are still few biomarkers to guide clinical management and treatment selection in mCRC. In this study, we applied an optimized flow cytometry protocol for EV identification, enumeration, and subtyping in blood samples of 54 patients with mCRC and 48 age and sex-matched healthy controls (HCs). The overall survival (OS) and overall response rate (ORR) were evaluated in mCRC patients enrolled and treated with a first line fluoropyrimidine-based regimen. Our findings show that patients with mCRC presented considerably higher blood concentrations of total EVs, as well as CD133+ and EPCAM+ EVs compared to HCs. Overall survival analysis revealed that increased blood concentrations of total EVs and CD133+ EVs before treatment were significantly associated with shorter OS in mCRC patients (p = 0.001; and p = 0.0001, respectively). In addition, we observed a correlation between high blood levels of CD133+ EVs at baseline and reduced ORR to first-line systemic therapy (p = 0.045). These findings may open exciting perspectives into the application of novel blood-based EV biomarkers for improved risk stratification and optimized treatment strategies in mCRC.

引用

页数：15

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