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Koh Y, Kim H, Joo SY, Song S, Choi YH, Kim HR, Moon B, Byun J, Hong J, Shin DY, Park S, Lee KH, Lee KT, Lee JK, Park D, Lee SH, Jang JY, Lee H, Kim JA, Yoon SS, Park JK. Genetic assessment of pathogenic germline alterations in lysosomal genes among Asian patients with pancreatic ductal adenocarcinoma. J Transl Med 2023; 21:730. [PMID: 37848935 PMCID: PMC10580633 DOI: 10.1186/s12967-023-04549-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/20/2023] [Indexed: 10/19/2023] Open
Abstract
BACKGROUND Lysosomes are closely linked to autophagic activity, which plays a vital role in pancreatic ductal adenocarcinoma (PDAC) biology. The survival of PDAC patients is still poor, and the identification of novel genetic factors for prognosis and treatment is highly required to prevent PDAC-related deaths. This study investigated the germline variants related to lysosomal dysfunction in patients with PDAC and to analyze whether they contribute to the development of PDAC. METHODS The germline putative pathogenic variants (PPV) in genes involved in lysosomal storage disease (LSD) was compared between patients with PDAC (n = 418) and healthy controls (n = 845) using targeted panel and whole-exome sequencing. Furthermore, pancreatic organoids from wild-type and KrasG12D mice were used to evaluate the effect of lysosomal dysfunction on PDAC development. RNA sequencing (RNA-seq) analysis was performed with established PDAC patient-derived organoids (PDOs) according to the PPV status. RESULTS The PPV in LSD-related genes was higher in patients with PDAC than in healthy controls (8.13 vs. 4.26%, Log2 OR = 1.65, P = 3.08 × 10-3). The PPV carriers of LSD-related genes with PDAC were significantly younger than the non-carriers (mean age 61.5 vs. 65.3 years, P = 0.031). We further studied a variant of the lysosomal enzyme, galactosylceramidase (GALC), which was the most frequently detected LSD variant in our cohort. Autophagolysosomal activity was hampered when GALC was downregulated, which was accompanied by paradoxically elevated autophagic flux. Furthermore, the number of proliferating Ki-67+ cells increased significantly in pancreatic organoids derived from Galc knockout KrasG12D mice. Moreover, GALC PPV carriers tended to show drug resistance in both PDAC cell line and PDAC PDO, and RNA-seq analysis revealed that various metabolism and gene repair pathways were upregulated in PDAC PDOs harboring a GALC variant. CONCLUSIONS Genetically defined lysosomal dysfunction is frequently observed in patients with young-onset PDAC. This might contribute to PDAC development by altering metabolism and impairing autophagolysosomal activity, which could be potentially implicated in therapeutic applications for PDAC.
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Affiliation(s)
- Youngil Koh
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyemin Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - So Young Joo
- Department of Biological Sciences, Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea
| | - Seulki Song
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Young Hoon Choi
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyung Rae Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Byul Moon
- Aging Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Jamin Byun
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Junshik Hong
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Dong-Yeop Shin
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Solip Park
- Structural Biology Department, Centro Nacional de Investigaciones Oncológicas (CNIO), Madrid, Spain
| | - Kwang Hyuck Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyu Taek Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jong Kyun Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Daechan Park
- Department of Molecular Science and Technology, Department of Biological Sciences, Ajou University, Suwon, Republic of Korea
| | - Se-Hoon Lee
- Department of Hematology/Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin-Young Jang
- Departments of Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea.
| | - Hyunsook Lee
- Department of Biological Sciences, Institute of Molecular Biology and Genetics, Seoul National University, Seoul, Republic of Korea.
| | - Jung-Ae Kim
- Aging Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.
- Department of Functional Genomics, KRIBB School of Bioscience, University of Science and Technology, Daejeon, Republic of Korea.
| | - Sung-Soo Yoon
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
- Cancer Research Institute, Seoul National University School of Medicine, Seoul, Republic of Korea.
| | - Joo Kyung Park
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea.
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Muendlein A, Heinzle C, Brandtner EM, Leiherer A, Geiger K, Gaenger S, Drexel H, Dechow T, Decker T. Plasma apolipoprotein M predicts overall survival in metastatic breast cancer patients. Breast Cancer Res Treat 2023; 201:571-576. [PMID: 37490173 DOI: 10.1007/s10549-023-07045-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/07/2023] [Indexed: 07/26/2023]
Abstract
PURPOSE Apolipoprotein M (APOM) is a plasma apolipoprotein closely involved with lipid metabolism and inflammation. In vitro studies suggest that APOM may also have a tumor-suppressive role in breast cancer. In the present study, we aimed to evaluate the impact of plasma APOM levels on the prognosis of breast cancer patients. METHODS We measured APOM levels using an enzyme-linked immunosorbent assay in 75 patients with ER-positive/HER2-negative metastatic breast cancer. The endpoint was overall survival (OS) at 24 months. RESULTS During the 24-month follow-up period, 34.7% of the patients died. Baseline APOM levels were significantly reduced in patients who deceased during follow-up compared to survivors (42.7 ± 14.5 µg/mL versus 52.2 ± 13.8 µg/mL; P = 0.003). Cox regression analysis showed a hazard ratio of 0.30 [95% confidence interval 0.15-0.61]; P < 0.001 per doubling of APOM levels. Correction for age, C-reactive protein, menopausal state, histology of the primary tumor, metastatic site, number of metastases, endocrine resistance, scheduled therapy line, and kind of scheduled therapy indicated that circulating APOM predicted OS independently of these parameters (HRper doubling = 0.23 [0.09-0.56; P = 0.001). CONCLUSIONS Our study suggests that circulating APOM is significantly linked with reduced mortality in metastatic breast cancer patients.
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Affiliation(s)
- Axel Muendlein
- Vorarlberg Institute for Vascular Investigation and Treatment Laboratory, Stadtstrasse 33, 6850, Dornbirn, Austria.
| | - Christine Heinzle
- Vorarlberg Institute for Vascular Investigation and Treatment Laboratory, Stadtstrasse 33, 6850, Dornbirn, Austria
- Medical Central Laboratories, Feldkirch, Austria
| | - Eva Maria Brandtner
- Vorarlberg Institute for Vascular Investigation and Treatment Laboratory, Stadtstrasse 33, 6850, Dornbirn, Austria
| | - Andreas Leiherer
- Vorarlberg Institute for Vascular Investigation and Treatment Laboratory, Stadtstrasse 33, 6850, Dornbirn, Austria
- Medical Central Laboratories, Feldkirch, Austria
| | - Kathrin Geiger
- Vorarlberg Institute for Vascular Investigation and Treatment Laboratory, Stadtstrasse 33, 6850, Dornbirn, Austria
- Medical Central Laboratories, Feldkirch, Austria
| | - Stella Gaenger
- Vorarlberg Institute for Vascular Investigation and Treatment Laboratory, Stadtstrasse 33, 6850, Dornbirn, Austria
| | - Heinz Drexel
- Vorarlberg Institute for Vascular Investigation and Treatment Laboratory, Stadtstrasse 33, 6850, Dornbirn, Austria
- Drexel University College of Medicine, Philadelphia, PA, USA
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He Y, Chen J, Ma Y, Chen H. Apolipoproteins: New players in cancers. Front Pharmacol 2022; 13:1051280. [PMID: 36506554 PMCID: PMC9732396 DOI: 10.3389/fphar.2022.1051280] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/15/2022] [Indexed: 11/26/2022] Open
Abstract
Apolipoproteins (APOs), the primary protein moiety of lipoproteins, are known for their crucial role in lipid traffic and metabolism. Despite extensive exploration of APOs in cardiovascular diseases, their roles in cancers did not attract enough attention. Recently, research focusing on the roles of APOs in cancers has flourished. Multiple studies demonstrate the interaction of APOs with classical pathways of tumorigenesis. Besides, the dysregulation of APOs may indicate cancer occurrence and progression, thus serving as potential biomarkers for cancer patients. Herein, we summarize the mechanisms of APOs involved in the development of various cancers, their applications as cancer biomarkers and their genetic polymorphism associated with cancer risk. Additionally, we also discuss the potential anti-cancer therapies by virtue of APOs. The comprehensive review of APOs in cancers may advance the understanding of the roles of APOs in cancers and their potential mechanisms. We hope that it will provide novel clues and new therapeutic strategies for cancers.
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Affiliation(s)
- Yingcheng He
- Department of Histology and Embryology, Medical College of Nanchang University, Nanchang, Jiangxi, China,Medical Department, Queen Mary School, Nanchang University, Nanchang, Jiangxi, China
| | - Jianrui Chen
- Department of Histology and Embryology, Medical College of Nanchang University, Nanchang, Jiangxi, China,Medical Department, Queen Mary School, Nanchang University, Nanchang, Jiangxi, China
| | - Yanbing Ma
- Department of Histology and Embryology, Medical College of Nanchang University, Nanchang, Jiangxi, China,Medical Department, Queen Mary School, Nanchang University, Nanchang, Jiangxi, China
| | - Hongping Chen
- Department of Histology and Embryology, Medical College of Nanchang University, Nanchang, Jiangxi, China,Jiangxi Key Laboratory of Experimental Animals, Nanchang University, Nanchang, Jiangxi, China,*Correspondence: Hongping Chen,
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