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Yadav S. Advanced therapeutics avenues in hepatocellular carcinoma: a novel paradigm. Med Oncol 2023; 40:239. [PMID: 37442842 DOI: 10.1007/s12032-023-02104-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023]
Abstract
Hepatocellular carcinoma (HCC) is the most frequent type of primary liver cancer, and it poses a significant risk to patients health and longevity due to its high morbidity and fatality rates. Surgical ablation, radiotherapy, chemotherapy, and, most recently, immunotherapy have all been investigated for HCC, but none have yielded the desired outcomes. Several unique nanocarrier drug delivery techniques have been studied for their potential therapeutic implications in the treatment of HCC. Nanoparticle-based imaging could be effective for more accurate HCC diagnosis. Since its inception, nanomedicine has significantly transformed the approach to both the treatment and diagnostics of liver cancer. Nanoparticles (NPs) are being studied as a potential treatment for liver cancer because of their ability to carry small substances, such as treatment with chemotherapy, microRNA, and therapeutic genes. The primary focus of this study is on the most current discoveries and practical uses of nanomedicine-based diagnostic and therapeutic techniques for liver cancer. In this section, we had gone over what we know about metabolic dysfunction in HCC and the treatment options that attempt to fix it by targeting metabolic pathways. Furthermore, we propose a multi-target metabolic strategy as a viable HCC treatment option. Based on the findings given here, the scientists believe that smart nanomaterials have great promise for improving cancer theranostics and opening up new avenues for tumor diagnosis and treatment.
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Affiliation(s)
- Shikha Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Plot No.2, Sector 17-A, Yamuna Expressway, Gautam Buddhnagar, Greater Noida, Uttar Pradesh, 201310, India.
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Machida M, Sugimura T, Kajimoto S, Taemaitree F, Koseki Y, Kasai H, Nakabayashi T. Label-Free Tracking of Nanoprodrug Cellular Uptake and Metabolism Using Raman and Autofluorescence Imaging. J Phys Chem B 2023; 127:3851-3860. [PMID: 37094294 DOI: 10.1021/acs.jpcb.3c01133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Nano-DDS, a drug delivery system using nanoparticles, is a promising tool to reduce adverse drug reactions and maximize drug efficiency. Understanding the intracellular dynamics following the accumulation of nanoparticles in tissues, such as cellular uptake, distribution, metabolism, and pharmacological effects, is essential to maximize drug efficiency; however, it remains elusive. In this study, we tracked the intracellular behavior of nanoparticles of a prodrug, cholesterol-linked SN-38 (CLS), in a label-free manner using Raman and autofluorescence imaging. Bright autofluorescent spots were observed in cells treated with CLS nanoparticles, and the color tone of the bright spots changed with incubation time. The Raman spectra of the bright spots showed that the autofluorescence came from the nanoparticles taken into cells, and the change in color of bright spots indicated that CLS turned into SN-38 via hydrolysis inside a cell. It was found that most of the SN-38 were localized in small regions in the cytoplasm even after the conversion from CLS, and only a small amount of SN-38 was dissolved and migrated into other cytoplasm regions and the nucleus. The massive size growth of cells was observed within several tens of hours after the treatment with CLS nanoparticles. Moreover, Raman images of cells using the cytochrome c band and the fluorescence images of cells stained with JC-1 showed that cellular uptake of CLS nanoparticles efficiently caused mitochondrial damage. These results show that the combination of Raman and autofluorescence imaging can provide insight into the intracellular behavior of prodrug nanoparticles and the cell response and facilitate the development of nano-DDSs.
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Affiliation(s)
- Masato Machida
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Toshiki Sugimura
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Shinji Kajimoto
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
- JST PRESTO, Kawaguchi, Saitama 332-0012, Japan
| | - Farsai Taemaitree
- Research Institute for Electronic Science, Hokkaido University, N20W10, North Ward, Sapporo 001-0020, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Yoshitaka Koseki
- Research Institute for Electronic Science, Hokkaido University, N20W10, North Ward, Sapporo 001-0020, Japan
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Hitoshi Kasai
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - Takakazu Nakabayashi
- Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
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Krasteva N, Georgieva M. Promising Therapeutic Strategies for Colorectal Cancer Treatment Based on Nanomaterials. Pharmaceutics 2022; 14:pharmaceutics14061213. [PMID: 35745786 PMCID: PMC9227901 DOI: 10.3390/pharmaceutics14061213] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/18/2022] [Accepted: 05/26/2022] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is a global health problem responsible for 10% of all cancer incidences and 9.4% of all cancer deaths worldwide. The number of new cases increases per annum, whereas the lack of effective therapies highlights the need for novel therapeutic approaches. Conventional treatment methods, such as surgery, chemotherapy and radiotherapy, are widely applied in oncology practice. Their therapeutic success is little, and therefore, the search for novel technologies is ongoing. Many efforts have focused recently on the development of safe and efficient cancer nanomedicines. Nanoparticles are among them. They are uniquewith their properties on a nanoscale and hold the potential to exploit intrinsic metabolic differences between cancer and healthy cells. This feature allows them to induce high levels of toxicity in cancer cells with little damage to the surrounding healthy tissues. Graphene oxide is a promising 2D material found to play an important role in cancer treatments through several strategies: direct killing and chemosensitization, drug and gene delivery, and phototherapy. Several new treatment approaches based on nanoparticles, particularly graphene oxide, are currently under research in clinical trials, and some have already been approved. Here, we provide an update on the recent advances in nanomaterials-based CRC-targeted therapy, with special attention to graphene oxide nanomaterials. We summarise the epidemiology, carcinogenesis, stages of the CRCs, and current nanomaterials-based therapeutic approaches for its treatment.
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Affiliation(s)
- Natalia Krasteva
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, “Acad. Georgi Bonchev” Str., bl. 21, 1113 Sofia, Bulgaria
- Correspondence: (N.K.); (M.G.); Tel.: +359-889-577-074 (N.K.); +359-896-833-604 (M.G.)
| | - Milena Georgieva
- Institute of Molecular Biology “Acad. R. Tsanev”, Bulgarian Academy of Sciences, “Acad. Georgi Bonchev” Str., bl. 21, 1113 Sofia, Bulgaria
- Correspondence: (N.K.); (M.G.); Tel.: +359-889-577-074 (N.K.); +359-896-833-604 (M.G.)
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4
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Böttger R, Pauli G, Chao PH, AL Fayez N, Hohenwarter L, Li SD. Lipid-based nanoparticle technologies for liver targeting. Adv Drug Deliv Rev 2020; 154-155:79-101. [PMID: 32574575 DOI: 10.1016/j.addr.2020.06.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/26/2020] [Accepted: 06/16/2020] [Indexed: 12/18/2022]
Abstract
Liver diseases such as hepatitis, cirrhosis, and hepatocellular carcinoma are global health problems accounting for approximately 800 million cases and over 2 million deaths per year worldwide. Major drawbacks of standard pharmacological therapies are the inability to deliver a sufficient concentration of a therapeutic agent to the diseased liver, and nonspecific drug delivery leading to undesirable systemic side effects. Additionally, depending on the specific liver disease, drug delivery to a subset of liver cells is required. In recent years, lipid nanoparticles have been developed to passively and actively target drugs to the liver. The success of this approach has been highlighted by the FDA-approval of the first liver-targeting lipid nanoparticle, ONPATTRO, in 2018 and many other promising candidate technologies are expected to follow. This review summarizes recent developments of various lipid-based liver-targeting technologies, namely solid-lipid nanoparticles, liposomes, niosomes and micelles, and discusses the challenges and future perspectives in this field.
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Banerjee A, Pathak S, Subramanium VD, G D, Murugesan R, Verma RS. Strategies for targeted drug delivery in treatment of colon cancer: current trends and future perspectives. Drug Discov Today 2017; 22:1224-1232. [PMID: 28545838 DOI: 10.1016/j.drudis.2017.05.006] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 04/07/2017] [Accepted: 05/15/2017] [Indexed: 11/25/2022]
Abstract
Despite advances in treatment modalities, colon cancer (CC) is the third most common cause of cancer-related death worldwide. Subsequent unfavorable effects owing to toxicity of conventional drugs are a challenging problem associated with chemotherapy. There is noticeable concern toward site-specific/targeted delivery of chemotherapeutic drugs specifically to the affected site of the colon in a predictable and reproducible manner. However, the biggest challenge in successful drug targeting for the colon is avoidance of drug absorption and/or degradation in the upper gastrointestinal tract before the drug reaches the colon. Nanoparticles endowed with targeting abilities offer a novel approach for site-specific delivery of chemotherapeutic agents. The present review focuses on recent approaches for colon-specific drug delivery (CDDS) and aims to unveil the emerging possibilities and advances in the treatment of CC with CDDS.
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Affiliation(s)
- Antara Banerjee
- Chettinad Academy of Research & Education (CARE), Kelambakkam, Chennai 603103, TN, India
| | - Surajit Pathak
- Chettinad Academy of Research & Education (CARE), Kelambakkam, Chennai 603103, TN, India
| | | | - Dharanivasan G
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, TN, India
| | - Ramachandran Murugesan
- Chettinad Academy of Research & Education (CARE), Kelambakkam, Chennai 603103, TN, India
| | - Rama S Verma
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai 600 036, TN, India.
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Tian J, Xu S, Deng H, Song X, Li X, Chen J, Cao F, Li B. Fabrication of self-assembled chitosan-dispersed LDL nanoparticles for drug delivery with a one-step green method. Int J Pharm 2017; 517:25-34. [DOI: 10.1016/j.ijpharm.2016.11.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/23/2016] [Accepted: 11/10/2016] [Indexed: 10/20/2022]
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Cisterna BA, Kamaly N, Choi WI, Tavakkoli A, Farokhzad OC, Vilos C. Targeted nanoparticles for colorectal cancer. Nanomedicine (Lond) 2016; 11:2443-56. [PMID: 27529192 DOI: 10.2217/nnm-2016-0194] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Colorectal cancer (CRC) is highly prevalent worldwide, and despite notable progress in treatment still leads to significant morbidity and mortality. The use of nanoparticles as a drug delivery system has become one of the most promising strategies for cancer therapy. Targeted nanoparticles could take advantage of differentially expressed molecules on the surface of tumor cells, providing effective release of cytotoxic drugs. Several efforts have recently reported the use of diverse molecules as ligands on the surface of nanoparticles to interact with the tumor cells, enabling the effective delivery of antitumor agents. Here, we present recent advances in targeted nanoparticles against CRC and discuss the promising use of ligands and cellular targets in potential strategies for the treatment of CRCs.
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Affiliation(s)
- Bruno A Cisterna
- Laboratory of Nanomedicine & Targeted Delivery, Center for Integrative Medicine & Innovative Science, Faculty of Medicine, & Center for Bioinformatics & Integrative Biology, Faculty of Biological Sciences, Universidad Andres Bello, Santiago, 8370071 Santiago, Chile
| | - Nazila Kamaly
- Laboratory of Nanomedicine & Biomaterials, Harvard Medical School, Department of Anesthesiology, Brigham & Women's Hospital, Boston, MA 02115, USA.,Department of Micro & Nanotechnology, Technical University of Denmark, DTU Nanotech, 2800 Kgs. Lyngby, Denmark
| | - Won Il Choi
- Laboratory of Nanomedicine & Biomaterials, Harvard Medical School, Department of Anesthesiology, Brigham & Women's Hospital, Boston, MA 02115, USA.,Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-ro, Jinju-si, Gyeongsangnam-do 52851, Republic of Korea
| | - Ali Tavakkoli
- Department of Surgery, Brigham & Women's Hospital, Boston, MA 02115, USA
| | - Omid C Farokhzad
- Laboratory of Nanomedicine & Biomaterials, Harvard Medical School, Department of Anesthesiology, Brigham & Women's Hospital, Boston, MA 02115, USA.,King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Cristian Vilos
- Laboratory of Nanomedicine & Targeted Delivery, Center for Integrative Medicine & Innovative Science, Faculty of Medicine, & Center for Bioinformatics & Integrative Biology, Faculty of Biological Sciences, Universidad Andres Bello, Santiago, 8370071 Santiago, Chile.,Laboratory of Nanomedicine & Biomaterials, Harvard Medical School, Department of Anesthesiology, Brigham & Women's Hospital, Boston, MA 02115, USA.,Center for the Development of Nanoscience & Nanotechnology, CEDENNA, 9170124 Santiago, Chile
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Grenader T, Vernea F, Reinus C, Gabizon A. Malignant epithelioid hemangioendothelioma of the liver successfully treated with pegylated liposomal doxorubicin. J Clin Oncol 2011; 29:e722-4. [PMID: 21788568 DOI: 10.1200/jco.2011.35.5891] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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9
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Whateley TL. Literature Alerts. Drug Deliv 2009. [DOI: 10.3109/10717549809031393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bally MB, Lim H, Cullis PR, Mayer LD. Controlling the Drug Delivery Attributes of Lipid-Based Drug Formulations. J Liposome Res 2008. [DOI: 10.3109/08982109809035537] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Colbern GT, Hiller AJ, Musterer RS, Pegg E, Henderson IC, Working PK. Significant Increase in Antitumor Potency of Doxorubicin Hc1 by its Encapsulation in Pegylated Liposomes. J Liposome Res 2008. [DOI: 10.3109/08982109909035551] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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González Cao M, Bastarrika G, García-Foncillas J, Aristu J, Chopitea A, Martín Algarra S. Ileal carcinoid tumor with liver metastases and cardiac involvement treated with intraarterial liposomal doxorubicin and valve replacement. Clin Transl Oncol 2006; 8:369-71. [PMID: 16760013 DOI: 10.1007/s12094-006-0184-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Unless carcinoid are in general slow-growing tumors, some cases could be frankly malignant. The commonest cause of death in patients suffering a carcinoid tumor is liver failure due to tumor progression. When tumors have a fast evolution a multidisciplinary approach must be perform. This case report is an example of this specific situation.
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Affiliation(s)
- M González Cao
- Medical Oncology Department, Clínica Universitaria de Navarra, Pamplona, Spain.
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Abstract
Despite of the demonstrated activity of cytokines in vitro, their use in the clinical setting is often disappointing. Cytokine-related toxicity seriously limits optimal use in vivo. In addition, rapid degradation and excretion, neutralization and binding to receptors, or metabolization of the molecule results in a short half-life in serum when injected intravenously. As the dose-response curve of cytokines is relatively steep, outcome greatly benefits from improved delivery and bioavailability. One way to improve the pharmacokinetics of cytokines after systemic application is encapsulation in liposomes. An advantage of liposomes is that the encapsulated drug is protected from (rapid) degradation and excretion, and it eliminates the binding to neutralizing antibodies or (soluble) receptors. Moreover, liposomes can be tailored in such a way that they exhibit favorable pharmacokinetics, i.e., increased serum half-life and improved targeting to tissues or cells of interest. In this chapter, the use of liposomal cytokines in the treatment of cancer and infectious disease is discussed.
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Affiliation(s)
- Timo L M ten Hagen
- Department of Surgical Oncology, Erasmus University Rotterdam, Rotterdam, The Netherlands
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Kruskal JB, Thomas P, Kane RA, Goldberg SN. Hepatic perfusion changes in mice livers with developing colorectal cancer metastases. Radiology 2004; 231:482-90. [PMID: 15128993 DOI: 10.1148/radiol.2312030160] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE To evaluate whether intrahepatic flow alterations occur during formation of hepatic colorectal cancer metastases and to identify possible causes of these alterations. MATERIALS AND METHODS Intravital imaging of exteriorized livers was performed in 72 live mice. Three groups of mice were studied: a sham-operated control group (n = 24), a group with nonmetastasizing subcutaneous gliomas (n = 24), and a group with developing hepatic CX-1 colon cancer metastases (n = 24). Microvascular flow parameters, leukocyte-endothelial interactions, and wall shear stress were directly measured in hepatic sinusoids and postsinusoidal venules at 2-day intervals prior to and during the development of metastases. The Kruskal-Wallis test was used initially to test for overall equality of medians in each data group. Single posttest comparisons of independent samples were performed with the Mann-Whitney test, with an overall statistical significance of .05. RESULTS Prior to the development of visible colorectal cancer metastases, significant (P <.05) reductions occurred in sinusoidal and postsinusoidal flow and wall shear rates, coupled with increased leukocyte rolling and adherence. With tumor growth, flow was further compromised in 92% of tumors larger than 0.5 mm in diameter by extrinsic compression of sinusoids and portal venules and narrowing caused by adherent leukocytes. CONCLUSION Significant intrahepatic flow alterations occur in mouse livers prior to growth of visible metastases and provide a rational explanation for elevation in the Doppler perfusion index that occurs prior to tumor formation.
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Affiliation(s)
- Jonathan B Kruskal
- Department of Radiology, Beth Israel Deaconess Medical Center and Harvard Medical School, 1 Deaconess Rd, West Campus 302B, Boston, MA 02215, USA.
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ten Hagen TLM, Eggermont AMM. Solid tumor therapy: manipulation of the vasculature with TNF. Technol Cancer Res Treat 2003; 2:195-203. [PMID: 12779350 DOI: 10.1177/153303460300200303] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Drug delivery to solid tumors is one of the most challenging aspects in cancer therapy. Whereas agents seem promising in the test tube, clinical trials often fail due to unfavorable pharmacokinetics, poor delivery, low local concentrations, and limited accumulation in the target cell. A major step forwards in the treatment of solid tumors is the recognition of the tumor-associated vasculature as an important target for therapy. Inhibition of tumor vascular development has a direct effect on the growth and progression of the tumor. Destruction of an existing vasculature also directly inflicts serious damage to the tumor cell. Moreover, the tumor vascular bed can be manipulated facilitating enhanced permissiveness of the tumor for administered chemotherapeutics. In this review, we focus on the use of tumor necrosis factor alpha (TNF) in local and systemic therapy in conjunction with chemotherapy. In these settings TNF demonstrates potent and selective activity on the tumor vascular bed, which strongly improves tumor response.
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Affiliation(s)
- Timo L M ten Hagen
- Department of Surgical Oncology, Laboratory for Experimental Surgical Oncology, Erasmus MC, Room Ee 0102a, PO Box 1738, 3000 DR Rotterdam, The Netherlands.
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Reid TR, Sze DY. Developments in medical oncology and their implications for interventional radiology. Tech Vasc Interv Radiol 2002; 5:177-81. [PMID: 12524649 DOI: 10.1053/tvir.2002.36421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Although surgery and radiation therapy have always been spatially targeted, chemotherapy as administered by oncologists has remained steadfastly committed to non-targeted systemic delivery. Decades of pharmaceutical research have yielded agents appropriate for intravenous use, but countless potentially efficacious agents have been discarded because of pharmacokinetic and toxicity profiles unsuitable for systemic delivery. With the emerging technology of biological agents comes a new series of challenges. These agents tend to be larger, less long-lived, and antigenic when compared with the agents of the past. Meanwhile, interventional radiologists have shown that targeted methods of delivery can have substantial impact on the efficacy and toxicity of agents. Laboratory scientists have developed new bullets; we interventional radiologists have developed new guns. It is time we take advantage of potential synergies.
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Affiliation(s)
- Tony R Reid
- Palo Alto Veterans Administration Medical Center and Stanford University Medical Center, Palo Alto, CA 94305-5642, USA
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Kruskal JB, Thomas P, Nasser I, Cay O, Kane RA. Hepatic colon cancer metastases in mice: dynamic in vivo correlation with hypoechoic rims visible at US. Radiology 2000; 215:852-7. [PMID: 10831710 DOI: 10.1148/radiology.215.3.r00jn16852] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
PURPOSE To use videomicroscopy of tumor-bearing livers of live mice to depict tumors directly to determine the exact nature of rims seen on corresponding ultrasonographic (US) scans. MATERIALS AND METHODS Seventy-six hepatic colorectal cancer metastases were studied in exteriorized livers of 18 mice by using intravital microscopy, US, and histologic examination of the same tumors. RESULTS Hypoechoic rims correlated with distended sinusoidal spaces in vivo. These spaces surrounded only locally invasive tumors (mean diameter, 0.85 mm) that had obstructed the supplying terminal portal venules. These spaces, containing adherent leukocytes and tumor cells, gave rise to new tumor vasculature. Results of histologic examination of rims (portal inflammation, congested or compressed sinusoids, cell atrophy) correlated with leukocyte endothelial adherence, occluded sinusoids, and new vessel formation in vivo. CONCLUSION Unlike results from previous studies, dynamic in vivo observations of peritumoral rims demonstrated distended sinusoidal spaces giving rise to new tumor-penetrating vessels. These sinusoids arose around locally invasive tumors and were associated with more advanced intrahepatic disease. These dynamic observations provide a pathophysiologic explanation for previous histologic correlates of peritumoral rims.
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Affiliation(s)
- J B Kruskal
- Department of Radiology, Beth Israel Deaconess Medical Center-West, Boston, MA 02215, USA.
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