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Rot AE, Hrovatin M, Bokalj B, Lavrih E, Turk B. Cysteine cathepsins: From diagnosis to targeted therapy of cancer. Biochimie 2024:S0300-9084(24)00201-3. [PMID: 39245316 DOI: 10.1016/j.biochi.2024.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 08/23/2024] [Accepted: 09/03/2024] [Indexed: 09/10/2024]
Abstract
Cysteine cathepsins are a fascinating group of proteolytic enzymes that play diverse and crucial roles in numerous biological processes, both in health and disease. Understanding these proteases is essential for uncovering novel insights into the underlying mechanisms of a wide range of disorders, such as cancer. Cysteine cathepsins influence cancer biology by participating in processes such as extracellular matrix degradation, angiogenesis, immune evasion, and apoptosis. In this comprehensive review, we explore foundational research that illuminates the diverse and intricate roles of cysteine cathepsins as diagnostic markers and therapeutic targets for cancer. This review aims to provide valuable insights into the clinical relevance of cysteine cathepsins and explore their capacity to advance personalised and targeted medical interventions in oncology.
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Affiliation(s)
- Ana Ercegovič Rot
- Jožef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Matija Hrovatin
- Jožef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Bor Bokalj
- Jožef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Ernestina Lavrih
- Jožef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; Jožef Stefan International Postgraduate School, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Boris Turk
- Jožef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000, Ljubljana, Slovenia.
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Biasizzo M, Javoršek U, Vidak E, Zarić M, Turk B. Cysteine cathepsins: A long and winding road towards clinics. Mol Aspects Med 2022; 88:101150. [PMID: 36283280 DOI: 10.1016/j.mam.2022.101150] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/13/2022] [Accepted: 10/14/2022] [Indexed: 12/03/2022]
Abstract
Biomedical research often focuses on properties that differentiate between diseased and healthy tissue; one of the current focuses is elevated expression and altered localisation of proteases. Among these proteases, dysregulation of cysteine cathepsins can frequently be observed in inflammation-associated diseases, which tips the functional balance from normal physiological to pathological manifestations. Their overexpression and secretion regularly exhibit a strong correlation with the development and progression of such diseases, making them attractive pharmacological targets. But beyond their mostly detrimental role in inflammation-associated diseases, cysteine cathepsins are physiologically highly important enzymes involved in various biological processes crucial for maintaining homeostasis and responding to different stimuli. Consequently, several challenges have emerged during the efforts made to translate basic research data into clinical applications. In this review, we present both physiological and pathological roles of cysteine cathepsins and discuss the clinical potential of cysteine cathepsin-targeting strategies for disease management and diagnosis.
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Affiliation(s)
- Monika Biasizzo
- Jozef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; International Postgraduate School Jozef Stefan, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Urban Javoršek
- Jozef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; International Postgraduate School Jozef Stefan, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Eva Vidak
- Jozef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; International Postgraduate School Jozef Stefan, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Miki Zarić
- Jozef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; International Postgraduate School Jozef Stefan, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Boris Turk
- Jozef Stefan Institute, Department of Biochemistry and Molecular and Structural Biology, Jamova 39, SI-1000, Ljubljana, Slovenia; Faculty of Chemistry and Chemical Technology, University of Ljubljana, Vecna pot 113, SI-1000, Ljubljana, Slovenia.
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All Roads Lead to Cathepsins: The Role of Cathepsins in Non-Alcoholic Steatohepatitis-Induced Hepatocellular Carcinoma. Biomedicines 2022; 10:biomedicines10102351. [PMID: 36289617 PMCID: PMC9598942 DOI: 10.3390/biomedicines10102351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/16/2022] [Accepted: 09/16/2022] [Indexed: 11/17/2022] Open
Abstract
Cathepsins are lysosomal proteases that are essential to maintain cellular physiological homeostasis and are involved in multiple processes, such as immune and energy regulation. Predominantly, cathepsins reside in the lysosomal compartment; however, they can also be secreted by cells and enter the extracellular space. Extracellular cathepsins have been linked to several pathologies, including non-alcoholic steatohepatitis (NASH) and hepatocellular carcinoma (HCC). NASH is an increasingly important risk factor for the development of HCC, which is the third leading cause of cancer-related deaths and poses a great medical and economic burden. While information regarding the involvement of cathepsins in NASH-induced HCC (NASH-HCC) is limited, data to support the role of cathepsins in either NASH or HCC is accumulating. Since cathepsins play a role in both NASH and HCC, it is likely that the role of cathepsins is more significant in NASH-HCC compared to HCC derived from other etiologies. In the current review, we provide an overview on the available data regarding cathepsins in NASH and HCC, argue that cathepsins play a key role in the transition from NASH to HCC, and shed light on therapeutic options in this context.
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Guan Y, Yang X, Zhao R, Li B, Yang Z, Gao M, Cao X, Jiang C. Characteristics of cathepsin members and expression responses to poly I:C challenge in Pacific cod (Gadus macrocephalus). FISH & SHELLFISH IMMUNOLOGY 2022; 128:484-493. [PMID: 35985629 DOI: 10.1016/j.fsi.2022.08.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Cathepsins are major lysosomal enzymes that participate in necessary physiological processes, including protein degradation, tissue differentiation, and innate or adaptive immune responses. According to their proteolytic activity, vertebrate cathepsins are classified as cysteine proteases (cathepsins B, C, F, H, K, L, O, S, V, W, and X or Z), aspartic proteases (cathepsin D and E), and serine proteases (cathepsin A and G). Several cathepsins were reported in teleosts, however, no cathepsin gene has been identified from Pacific cod so far. In the present study, a total of 13 cathepsin genes were identified for Pacific cod. The evolutionary path of each cathepsin gene was demonstrated via analysis of phylogenetic trees, multiple alignments, conserved domains, motif compositions, and tertiary structures. Tissue distribution analysis showed that all cathepsin genes were ubiquitously expressed in eight healthy tissues but they exhibited diverse levels of expression. Several cathepsin genes were found to be highly expressed in the kidney, spleen, head kidney and liver, whereas low or modest levels were detected in the gills, skin, intestines, and heart. Temporal-specific expression of cathepsins in early developmental stages of Pacific cod were also conducted. CTSK, S, F, and Z were highly expressed at 1 dph and 5 dph and decreased later, while CTSL, L1, and L.1 transcript levels gradually increased in a time-dependent manner. Additionally, the expression profiles of cathepsin genes in Pacific cod were evaluated in the spleen and liver after poly I:C challenge. The results indicated that all cathepsin genes were significantly upregulated upon poly I:C stimulation, suggesting that they play key roles in antiviral immune responses in Pacific cod. Our findings establish a foundation for future exploration of the molecular mechanisms of cathepsins in modulating antiviral immunity in Pacific cod.
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Affiliation(s)
- Yude Guan
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China; College of Life Sciences, Nankai University, Tianjin, 300000, China
| | - Xu Yang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China
| | - Ruihu Zhao
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China
| | - Boyan Li
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China
| | - Zhen Yang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China
| | - Minghong Gao
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China
| | - Xinyu Cao
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China
| | - Chen Jiang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian, 116023, China.
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Xiong YJ, Zhu Y, Liu YL, Zhao YF, Shen X, Zuo WQ, Lin F, Liang ZQ. P300 Participates in Ionizing Radiation-Mediated Activation of Cathepsin L by Mutant p53. J Pharmacol Exp Ther 2021; 378:276-286. [PMID: 34253647 DOI: 10.1124/jpet.121.000639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 06/28/2021] [Indexed: 11/22/2022] Open
Abstract
Our previous studies have shown that cathepsin L (CTSL) is involved in the ability of tumors to resist ionizing radiation (IR), but the specific mechanisms responsible for this remain unknown. We report here that mutant p53 (mut-p53) is involved in IR-induced transcription of CTSL. We found that irradiation caused activation of CTSL in mut-p53 cell lines, whereas there was almost no activation in p53 wild-type cell lines. Additionally, luciferase reporter gene assay results demonstrated that IR induced the p53 binding region on the CTSL promoter. We further demonstrated that the expression of p300 and early growth response factor-1 (Egr-1) was upregulated in mut-p53 cell lines after IR treatment. Accordingly, the expression of Ac-H3, Ac-H4, AcH3K9 was upregulated after IR treatment in mut-p53 cell lines, whereas histone deacetylase (HDAC) 4 and HDAC6 were reciprocally decreased. Moreover, knockdown of either Egr-1 or p300 abolished the binding of mut-p53 to the promoter of CTSL. Chromatin immunoprecipitation assay results showed that the IR-activated transcription of CTSL was dependent on p300. To further delineate the clinical relevance of interactions between Egr-1/p300, mut-p53, and CTSL, we accessed primary tumor samples to evaluate the relationships between mut-p53, CTSL, and Egr-1/p300 ex vivo. The results support the notion that mut-p53 is correlated with CTSL transcription involving the Egr-1/p300 pathway. Taken together, the results of our study revealed that p300 is an important target in the process of IR-induced transcription of CTSL, which confirms that CTSL participates in mut-p53 gain-of-function. SIGNIFICANCE STATEMENT: Transcriptional activation of cathepsin L by ionizing radiation required the involvement of mutated p53 and Egr-1/p300. Interference with Egr-1 or p300 could inhibit the expression of cathepsin L induced by ionizing radiation. The transcriptional activation of cathepsin L by p300 may be mediated by p53 binding sites on the cathepsin L promoter.
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Affiliation(s)
- Ya-Jie Xiong
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
| | - Ying Zhu
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
| | - Ya-Li Liu
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
| | - Yi-Fan Zhao
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
| | - Xiao Shen
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
| | - Wen-Qing Zuo
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
| | - Fang Lin
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
| | - Zhong-Qin Liang
- Department of Pharmacology, Soochow University, Suzhou, China (Y.X., Y.L., Y.Zha., X.S., Q.Z., F.L., Z.L.), and Department of Pharmacy, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, Suzhou, China (Y.Zhu)
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Protease-triggered bioresponsive drug delivery for the targeted theranostics of malignancy. Acta Pharm Sin B 2021; 11:2220-2242. [PMID: 34522585 PMCID: PMC8424222 DOI: 10.1016/j.apsb.2021.01.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/17/2020] [Accepted: 12/14/2020] [Indexed: 02/07/2023] Open
Abstract
Proteases have a fundamental role in maintaining physiological homeostasis, but their dysregulation results in severe activity imbalance and pathological conditions, including cancer onset, progression, invasion, and metastasis. This striking importance plus superior biological recognition and catalytic performance of proteases, combining with the excellent physicochemical characteristics of nanomaterials, results in enzyme-activated nano-drug delivery systems (nanoDDS) that perform theranostic functions in highly specific response to the tumor phenotype stimulus. In the tutorial review, the key advances of protease-responsive nanoDDS in the specific diagnosis and targeted treatment for malignancies are emphatically classified according to the effector biomolecule types, on the premise of summarizing the structure and function of each protease. Subsequently, the incomplete matching and recognition between enzyme and substrate, structural design complexity, volume production, and toxicological issues related to the nanocomposites are highlighted to clarify the direction of efforts in nanotheranostics. This will facilitate the promotion of nanotechnology in the management of malignant tumors.
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Identification and characterization of the lamprey cathepsin genes. Immunogenetics 2019; 71:421-432. [PMID: 31089760 DOI: 10.1007/s00251-019-01117-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 04/10/2019] [Indexed: 10/26/2022]
Abstract
Cathepsins are key mammalian proteases that play an important role in the immune response. Several studies have revealed the versatile and critical functions of cathepsins. Here, we obtained ten kinds of cathepsin homologs and identified seven homologs with complete coding sequences. Phylogenetic analysis verified their identities and supported the classification of cathepsins into seven families, which is similar to other vertebrates. Tissue-specific expression analysis showed that all lamprey cathepsins (L-cathepsins) are present in the supraneural body (SB), kidney, gill, intestine, brain, heart, and liver, but their relative abundance varied among tissues. Additionally, we focused on the lamprey cathepsin L (L-cathepsin L) and used recombinant L-cathepsin L protein (rL-cathepsin L) to prepare anti rL-cathepsin L polyclonal antibodies, which were used to detect its distribution in lamprey tissues. The L-cathepsin L protein was primarily detected in the SB, kidney, gill, intestine, brain, and liver via western blot and immunohistochemistry assays. Importantly, quantitative real-time PCR (RT-PCR) revealed that the expression level of L-cathepsins mRNA significantly increased after exposure to three different stimuli (poly I:C, Staphylococcus aureus (S.a) and Vibro anguilarum (V.an)). This suggested that L-cathepsins may participate in defense processes. These results revealed that L-cathepsins may play key roles in the immune response to exogenous stimuli. The findings provide important information for future studies aiming to understand the molecular mechanisms underlying the immune response to pathogen invasion in lamprey.
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Cogo F, Williams R, Burden RE, Scott CJ. Application of nanotechnology to target and exploit tumour associated proteases. Biochimie 2019; 166:112-131. [PMID: 31029743 DOI: 10.1016/j.biochi.2019.04.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/24/2019] [Indexed: 02/07/2023]
Abstract
Proteases are hydrolytic enzymes fundamental for a variety of physiological processes, but the loss of their regulation leads to aberrant functions that promote onset and progression of many diseases including cancer. Proteases have been implicated in almost every hallmark of cancer and whilst widely investigated for tumour therapy, clinical adoption of protease inhibitors as drugs remains a challenge due to issues such as off-target toxicity and inability to achieve therapeutic doses at the disease site. Now, nanotechnology-based solutions and strategies are emerging to circumvent these issues. In this review, preclinical advances in approaches to enhance the delivery of protease drugs and the exploitation of tumour-derived protease activities to promote targeting of nanomedicine formulations is examined. Whilst this field is still in its infancy, innovations to date suggest that nanomedicine approaches to protease targeting or inhibition may hold much therapeutic and diagnostic potential.
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Affiliation(s)
- Francesco Cogo
- Centre for Cancer Research and Cell Biology, 97 Lisburn Road, BT9 7AE, UK
| | - Rich Williams
- Centre for Cancer Research and Cell Biology, 97 Lisburn Road, BT9 7AE, UK
| | - Roberta E Burden
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, BT9 7BL, UK
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Abstract
Cathepsins (CTS) are mainly lysosomal acid hydrolases extensively involved in the prognosis of different diseases, and having a distinct role in tumor progression by regulating cell proliferation, autophagy, angiogenesis, invasion, and metastasis. As all these processes conjunctively lead to cancer progression, their site-specific regulation might be beneficial for cancer treatment. CTS regulate activation of the proteolytic cascade and protein turnover, while extracellular CTS is involved in promoting extracellular matrix degradation and angiogenesis, thereby stimulating invasion and metastasis. Despite cancer regulation, the involvement of CTS in cellular adaptation toward chemotherapy and radiotherapy augments their therapeutic potential. However, lysosomal permeabilization mediated cytosolic translocation of CTS induces programmed cell death. This complex behavior of CTS generates the need to discuss the different aspects of CTS associated with cancer regulation. In this review, we mainly focused on the significance of each cathepsin in cancer signaling and their targeting which would provide noteworthy information in the context of cancer biology and therapeutics.
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Affiliation(s)
- Tejinder Pal Khaket
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea
| | - Taeg Kyu Kwon
- Department of Immunology, School of Medicine, Keimyung University, Dalseo-Gu, Daegu 704-701, Republic of Korea.
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Gyeongsan, Gyeongbuk 38453, Republic of Korea.
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Cysteine cathepsins as a prospective target for anticancer therapies-current progress and prospects. Biochimie 2018; 151:85-106. [PMID: 29870804 DOI: 10.1016/j.biochi.2018.05.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 05/31/2018] [Indexed: 02/08/2023]
Abstract
Cysteine cathepsins (CTS), being involved in both physiological and pathological processes, play an important role in the human body. During the last 30 years, it has been shown that CTS are highly upregulated in a wide variety of cancer types although they have received a little attention as a potential therapeutic target as compared to serine or metalloproteinases. Studies on the increasing problem of neoplastic progression have revealed that secretion of cell-surface- and intracellular cysteine proteases is aberrant in tumor cells and has an impact on their growth, invasion, and metastasis by taking part in tumor angiogenesis, in apoptosis, and in events of inflammatory and immune responses. Considering the role of CTS in carcinogenesis, inhibition of these enzymes becomes an attractive strategy for cancer therapy. The downregulation of natural CTS inhibitors (CTSsis), such as cystatins, observed in various types of cancer, supports this claim. The intention of this review is to highlight the relationship of CTS with cancer and to present illustrations that explain how some of their inhibitors affect processes related to neoplastic progression.
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Fei Y, Xiong Y, Shen X, Zhao Y, Zhu Y, Wang L, Liang Z. Cathepsin L promotes ionizing radiation-induced U251 glioma cell migration and invasion through regulating the GSK-3β/CUX1 pathway. Cell Signal 2018; 44:62-71. [DOI: 10.1016/j.cellsig.2018.01.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/20/2017] [Accepted: 01/09/2018] [Indexed: 12/13/2022]
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12
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Beyond the survival and death of the deltamethrin-threatened pollen beetle Meligethes aeneus: An in-depth proteomic study employing a transcriptome database. J Proteomics 2016; 150:281-289. [PMID: 27705816 DOI: 10.1016/j.jprot.2016.09.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 09/10/2016] [Accepted: 09/28/2016] [Indexed: 12/18/2022]
Abstract
Insecticide resistance is an increasingly global problem that hampers pest control. We sought the mechanism responsible for survival following pyrethroid treatment and the factors connected to paralysis/death of the pollen beetle Meligethes aeneus through a proteome-level analysis using nanoLC coupled with Orbitrap Fusion™ Tribrid™ mass spectrometry. A tolerant field population of beetles was treated with deltamethrin, and the ensuing proteome changes were observed in the survivors (resistant), dead (paralyzed) and control-treated beetles. The protein database consisted of the translated transcriptome, and the resulting changes were manually annotated via BLASTP. We identified a number of high-abundance changes in which there were several dominant proteins, e.g., the electron carrier cytochrome b5, ribosomal proteins 60S RPL28, 40S RPS23 and RPS26, eIF4E-transporter, anoxia up-regulated protein, 2 isoforms of vitellogenin and pathogenesis-related protein 5. Deltamethrin detoxification was influenced by different cytochromes P450, which were likely boosted by increased cytochrome b5, but glutathione-S-transferase ε and UDP-glucuronosyltransferases also contributed. Moreover, we observed changes in proteins related to RNA interference, RNA binding and epigenetic modifications. The high changes in ribosomal proteins and associated factors suggest specific control of translation. Overall, we showed modulation of expression processes by epigenetic markers, alternative splicing and translation. Future functional studies will benefit. BIOLOGICAL SIGNIFICANCE Insects develop pesticide resistance, which has become one of the key issues in plant protection. This growing resistance increases the demand for pesticide applications and the development of new substances. Knowledge in the field regarding the resistance mechanism and its responses to pesticide treatment provides us the opportunity to propose a solution for this issue. Although the pollen beetle Meligethes aeneus was effectively controlled with pyrethroids for many years, there have been reports of increasing resistance. We show protein changes including production of isoforms in response to deltamethrin at the protein level. These results illustrate the insect's survival state as a resistant beetle and in its paralyzed state (evaluated as dead) relative to resistant individuals.
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Fei Y, Xiong Y, Zhao Y, Wang W, Han M, Wang L, Tan C, Liang Z. Cathepsin L knockdown enhances curcumin-mediated inhibition of growth, migration, and invasion of glioma cells. Brain Res 2016; 1646:580-588. [PMID: 27373979 DOI: 10.1016/j.brainres.2016.06.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 06/24/2016] [Accepted: 06/30/2016] [Indexed: 11/30/2022]
Abstract
Curcumin can be used to prevent and treat cancer. However, its exact underlying molecular mechanisms remain poorly understood. Cathepsin L, a lysosomal cysteine protease, is overexpressed in several cancer types. This study aimed to determine the role of cathepsin L in curcumin-mediated inhibition of growth, migration, and invasion of glioma cells. Results revealed that the activity of cathepsin L was enhanced in curcumin-treated glioma cells. Cathepsin L knockdown induced by RNA interference significantly promoted curcumin-induced cytotoxicity, apoptosis, and cell cycle arrest. The knockdown also inhibited the migration and invasion of glioma cells. Our results suggested that the inhibition of cathepsin L can enhance the sensitivity of glioma cells to curcumin. Therefore, cathepsin L may be a new target to enhance the efficacy of curcumin against cancers.
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Affiliation(s)
- Yao Fei
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yajie Xiong
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yifan Zhao
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Wenjuan Wang
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Meilin Han
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Long Wang
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Caihong Tan
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China; Department of Pharmacy, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Zhongqin Liang
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
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14
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Olson OC, Joyce JA. Cysteine cathepsin proteases: regulators of cancer progression and therapeutic response. Nat Rev Cancer 2015; 15:712-29. [PMID: 26597527 DOI: 10.1038/nrc4027] [Citation(s) in RCA: 442] [Impact Index Per Article: 49.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cysteine cathepsin protease activity is frequently dysregulated in the context of neoplastic transformation. Increased activity and aberrant localization of proteases within the tumour microenvironment have a potent role in driving cancer progression, proliferation, invasion and metastasis. Recent studies have also uncovered functions for cathepsins in the suppression of the response to therapeutic intervention in various malignancies. However, cathepsins can be either tumour promoting or tumour suppressive depending on the context, which emphasizes the importance of rigorous in vivo analyses to ascertain function. Here, we review the basic research and clinical findings that underlie the roles of cathepsins in cancer, and provide a roadmap for the rational integration of cathepsin-targeting agents into clinical treatment.
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Affiliation(s)
- Oakley C Olson
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center
- Gerstner Sloan Kettering Graduate School of Biomedical Science, Memorial Sloan Kettering Cancer Center, New York, New York 10065, USA
| | - Johanna A Joyce
- Cancer Biology and Genetics Program, Memorial Sloan Kettering Cancer Center
- Department of Oncology, University of Lausanne
- Ludwig Institute for Cancer Research, University of Lausanne, CH-1066 Lausanne, Switzerland
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Cathepsin L suppression increases the radiosensitivity of human glioma U251 cells via G2/M cell cycle arrest and DNA damage. Acta Pharmacol Sin 2015; 36:1113-25. [PMID: 26095040 DOI: 10.1038/aps.2015.36] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 03/13/2015] [Indexed: 01/08/2023] Open
Abstract
AIM Cathepsin L is a lysosomal cysteine protease that plays important roles in cancer tumorigenesis, proliferation and chemotherapy resistance. The aim of this study was to determine how cathepsin L regulated the radiosensitivity of human glioma cells in vitro. METHODS Human glioma U251 cells (harboring the mutant type p53 gene) and U87 cells (harboring the wide type p53 gene) were irradiated with X-rays. The expression of cathepsin L was analyzed using Western blot and immunofluorescence assays. Cell survival and DNA damage were evaluated using clonogenic and comet assays, respectively. Flow cytometry was used to detect the cell cycle distribution. Apoptotic cells were observed using Hoechst 33258 staining and fluorescence microscopy. RESULTS Irradiation significantly increased the cytoplasmic and nuclear levels of cathepsin L in U251 cells but not in U87 cells. Treatment with the specific cathepsin L inhibitor Z-FY-CHO (10 μmol/L) or transfection with cathepsin L shRNA significantly increased the radiosensitivity of U251 cells. Both suppression and knockdown of cathepsin L in U251 cells increased irradiation-induced DNA damage and G2/M phase cell cycle arrest. Both suppression and knockdown of cathepsin L in U251 cells also increased irradiation-induced apoptosis, as shown by the increased levels of Bax and decreased levels of Bcl-2. CONCLUSION Cathepsin L is involved in modulation of radiosensitivity in human glioma U251 cells (harboring the mutant type p53 gene) in vitro.
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Kern U, Wischnewski V, Biniossek ML, Schilling O, Reinheckel T. Lysosomal protein turnover contributes to the acquisition of TGFβ-1 induced invasive properties of mammary cancer cells. Mol Cancer 2015; 14:39. [PMID: 25744631 PMCID: PMC4339013 DOI: 10.1186/s12943-015-0313-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 02/03/2015] [Indexed: 12/16/2022] Open
Abstract
Background Normal epithelial cells and carcinoma cells can acquire invasiveness by epithelial-to-mesenchymal transition (EMT), a process of considerable cellular remodeling. The endosomal/lysosomal compartment is a principal site of intracellular protein degradation. Lysosomal cathepsin proteases are secreted during cancer progression. The established pro-metastatic role of specific cysteine cathepsins has until now been ascribed to their contribution to extracellular matrix remodeling. We hypothesized that cysteine cathepsins affect transforming growth factor β-1 (TGFβ-1)-induced EMT of normal and malignant mammary epithelial cells. Methods The role of lysosomal proteolysis in TGFβ-1-induced EMT and invasion was investigated in a normal and a novel malignant murine mammary epithelial cell line. The contribution of cysteine cathepsins was determined by addition of the general cysteine cathepsin inhibitor E64d. Hallmarks of EMT were analyzed by molecular- and cell-biologic analyses including real-time cell migration/invasion assays. A quantitative proteome comparison using stable isotopic labeling with amino acids in culture (SILAC) showed the effect of E64d on TGFβ-1 induced proteome changes. Lysosomal patterning and junctional adhesion molecule A (Jam-a) localization and abundance were analyzed by immunofluorescence. Results We found increased lysosome activity during EMT of malignant mammary epithelial cells. Cysteine cathepsin inhibition had no effect on the induction of the TGFβ-1-induced EMT program on transcriptional level. Protease inhibition did not affect invasion of TGFβ-1 treated normal mammary epithelial cells, but reduced the invasion of murine breast cancer cells. Remarkably, reduced invasion was also evident if E64d was removed 24 h before the invasion assay in order to allow for recovery of cathepsin activity. Proteome analyses revealed a high abundance of lysosomal enzymes and lysosome-associated proteins in cancer cells treated with TGFβ-1 and E64d. An accumulation of those proteins and of lysosomal vesicles was further confirmed by independent methods. Interestingly, E64d caused lysosomal accumulation of Jam-a, a tight junction component facilitating epithelial cell-cell adhesion. Conclusion Our results demonstrate an important role of lysosomal proteolysis in cellular remodeling during EMT and a pivotal contribution of lysosomal cysteine cathepsins to TGFβ-1 induced acquisition of breast cancer cell invasiveness. These findings provide an additional rationale to use cathepsin inhibitors to stall tumor metastasis. Electronic supplementary material The online version of this article (doi:10.1186/s12943-015-0313-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ursula Kern
- Institute of Molecular Medicine and Cell Research, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 17, Freiburg, D-79104, Germany. .,Spemann Graduate School of Biology and Medicine, Albert-Ludwigs-University Freiburg, Freiburg, Germany. .,Faculty of Biology, Albert-Ludwigs-University Freiburg, Freiburg, Germany.
| | - Vladimir Wischnewski
- Institute of Molecular Medicine and Cell Research, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 17, Freiburg, D-79104, Germany.
| | - Martin L Biniossek
- Institute of Molecular Medicine and Cell Research, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 17, Freiburg, D-79104, Germany.
| | - Oliver Schilling
- Institute of Molecular Medicine and Cell Research, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 17, Freiburg, D-79104, Germany. .,BIOSS Centre for Biological Signalling Studies, Freiburg, Germany.
| | - Thomas Reinheckel
- Institute of Molecular Medicine and Cell Research, Albert-Ludwigs-University Freiburg, Stefan-Meier-Str. 17, Freiburg, D-79104, Germany. .,BIOSS Centre for Biological Signalling Studies, Freiburg, Germany. .,German Cancer Consortium (DKTK), Freiburg, Germany.
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Zhang Q, Han M, Wang W, Song Y, Chen G, Wang Z, Liang Z. Downregulation of cathepsin L suppresses cancer invasion and migration by inhibiting transforming growth factor‑β‑mediated epithelial‑mesenchymal transition. Oncol Rep 2015; 33:1851-9. [PMID: 25632968 DOI: 10.3892/or.2015.3754] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 12/22/2014] [Indexed: 11/06/2022] Open
Abstract
Cathepsin L, a lysosomal acid cysteine protease, was found to be overexpressed in several types of human carcinomas. However, its functional roles in tumor progression and the underlying mechanisms remain largely unclear. In the present study, we investigated a novel functional aspect of cathepsin L in regulating transforming growth factor‑β (TGF‑β)‑induced epithelial‑mesenchymal transition (EMT) in A549 and MCF‑7 cells and examined its possible mechanisms. We found that TGF‑β‑induced cell morphologic changes of EMT were associated with the increased protein level of cathepsin L in A549 and MCF‑7 cells, suggesting that cathepsin L may be involved in the regulation of EMT. Furthermore, we showed that silencing of cathepsin L blocked TGF‑β‑induced cell migration, invasion and actin remodeling and inhibited TGF‑β‑mediated EMT. We also demonstrated that the mechanism of how cathepsin L knockdown regulates EMT may be explained by the suppression of EMT‑inducing molecules, such as Snail, which is associated with the phosphatidylinositol 3‑kinase (PI3K)‑AKT and Wnt signaling pathways. Moreover, we proved that cathepsin L knockdown in A549 cells significantly inhibited xenograft tumor growth and EMT in vivo. The results showed a new mechanism to determine cathepsin L involvement in the regulation of cancer invasion and migration. These results showed that cathepsin L knockdown is important in regulating EMT and suggest that cathepsin L may be utilized as a new target for enhancing the efficacy of chemotherapeutics against epithelial cancer.
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Affiliation(s)
- Qingqing Zhang
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, P.R. China
| | - Meiling Han
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, P.R. China
| | - Wenjuan Wang
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, P.R. China
| | - Yunzhen Song
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, P.R. China
| | - Gang Chen
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, P.R. China
| | - Zhong Wang
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, P.R. China
| | - Zhongqin Liang
- Department of Pharmacology, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, P.R. China
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Salazar-Olivo LA, Mejia-Elizondo R, Alonso-Castro AJ, Ponce-Noyola P, Maldonado-Lagunas V, Melendez-Zajgla J, Saavedra-Alanis VM. SerpinA3g participates in the antiadipogenesis and insulin-resistance induced by tumor necrosis factor-α in 3T3-F442A cells. Cytokine 2014; 69:180-8. [PMID: 24973688 DOI: 10.1016/j.cyto.2014.05.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 05/09/2014] [Accepted: 05/30/2014] [Indexed: 01/20/2023]
Abstract
Tumor necrosis factor alpha (TNF-α) is a proven modulator of adipose metabolism, but the mechanisms by which this cytokine affects the development and function of adipose tissue have not been fully elucidated to date. Using differential display analysis, in this study, we demonstrate that gene expression of the serine protease inhibitor A3g (SerpinA3g) is specifically induced in 3T3-F442A preadipocytes by TNF-α but not by other adipogenic inhibitors, such as retinoic acid (RA) or transforming growth factor type beta (TGF-β). The specific induction of SerpinA3g by TNF-α was confirmed by RT-PCR in both preadipose and terminally differentiated 3T3-F442A cells. The knockdown of SerpinA3g using small interfering RNA prevented the antiadipogenesis elicited by TNF-α in 3T3-F442A cells but not the antiadipogenesis induced by RA or TGF-β. SerpinA3g-silenced 3T3-F442A cells also did not display TNF-α-induced insulin resistance. Our results demonstrate that SerpinA3g is specifically induced by TNF-α in 3T3-F442A cells, regardless of their stage of differentiation, and participates in the antiadipogenesis and insulin resistance induced by this cytokine. Our results suggest that SerpinA3g plays a role in the TNF-α modulation of adipose tissue development and metabolism. Additional studies are warranted regarding the mechanisms mediating adipose SerpinA3g effects.
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Affiliation(s)
- Luis A Salazar-Olivo
- Instituto Potosino de Investigación Científica y Tecnológica, Molecular Biology Division, San Luis Potosí, México.
| | - Rebeca Mejia-Elizondo
- Instituto Potosino de Investigación Científica y Tecnológica, Molecular Biology Division, San Luis Potosí, México
| | - Angel Josabad Alonso-Castro
- Instituto Potosino de Investigación Científica y Tecnológica, Molecular Biology Division, San Luis Potosí, México
| | - Patricia Ponce-Noyola
- Universidad de Guanajuato, Department of Biology, Division of Natural and Exact Sciences, Guanajuato, México
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Kenig S, Frangež R, Pucer A, Lah T. Inhibition of cathepsin L lowers the apoptotic threshold of glioblastoma cells by up-regulating p53 and transcription of caspases 3 and 7. Apoptosis 2011; 16:671-82. [PMID: 21484410 DOI: 10.1007/s10495-011-0600-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Despite all the progress in cancer treatment, glioblastoma, the most malignant tumor of the central nervous system, remains a terminal disease and new therapeutic approaches are urgently needed. A combination of chemotherapy with modifications that lower the apoptotic threshold of cancer cells could be effective. Cathepsin L inhibition was suggested as one of such modifications but the mechanism of cathepsin L anti-apoptotic activity is largely unknown. In the present study we show that, in U87 glioblastoma cells, cathepsin L is present in the nucleus and regulates the transcription of effector caspases 3 and 7. In cells with low cathepsin L expression, p53 and prohibitin--transcription factors that regulate caspase 7 expression--accumulate in the nuclei. The importance of p53 in this process is highlighted by the fact that in U87 cells with inhibited p53 transcriptional activity or in p53-negative cells U251, cathepsin L inhibition did not influence caspase 7 expression and had minimal effect on the level of apoptosis. Since p53 pathways are often mutated in glioblastoma, the findings of our study need to be considered before using cathepsin L inhibition for glioblastoma therapy and suggest that such adjuvant therapy may be effective only for a subpopulation of p53 wild type glioblastoma patients.
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Affiliation(s)
- Saša Kenig
- Department of Genetic Toxicology and Cancer Biology, National Institue of Biology, Ljubljana, Slovenia.
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Zhang L, Yun H, Murray F, Lu R, Wang L, Hook V, Insel PA. Cytotoxic T lymphocyte antigen-2 alpha induces apoptosis of murine T-lymphoma cells and cardiac fibroblasts and is regulated by cAMP/PKA. Cell Signal 2011; 23:1611-6. [PMID: 21620962 PMCID: PMC3148345 DOI: 10.1016/j.cellsig.2011.05.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2011] [Revised: 05/12/2011] [Accepted: 05/13/2011] [Indexed: 11/23/2022]
Abstract
The mechanism of cAMP-promoted apoptosis is not well defined. In wild-type (WT) murine S49 lymphoma cells, cAMP promotes apoptosis in a protein kinase A (PKA)-dependent manner. We find that treatment of WT S49 cells with 8-CPT-cAMP prominently increases the expression (as determined by DNA microarray analysis, real-time PCR and immunblotting) of cytotoxic T lymphocyte antigen-2α (CTLA-2α), a cathepsin L-like cysteine protease inhibitor. By contrast, CTLA-2α expression is only slightly increased by 8-CPT-cAMP treatment of D-S49 cells, which lack cAMP/PKA-promoted apoptosis. Raising endogenous cAMP (by use of forskolin or inhibition of phosphodiesterase [PDE] 4) or a PKA-selective, but not an Epac-selective, cAMP analogue, increases CTLA-2α mRNA expression; PKA, and not Epac, thus mediates the increase in CTLA-2α expression. An adenoviral CLTA-2α (Ad-CTLA-2α) construct induces apoptosis and enhances cAMP-promoted apoptosis in WT S49 cells but such cells do not have an increase in cathepsin L activity nor does a cathepsin L inhibitor alter cAMP-promoted apoptosis. 8-CPT-cAMP also increases CTLA-2α expression and induces apoptosis in murine cardiac fibroblasts; knockdown of CTLA-2α expression by siRNA blocks 8-CPT-cAMP-promoted apoptosis. Thus, cAMP increases CTLA-2α expression in murine lymphoma and cardiac fibroblasts and this increase in CTLA-2α contributes to cAMP/PKA-promoted apoptosis by mechanisms that are independent of the ability of CTLA-2α to inhibit cathepsin L.
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Affiliation(s)
- Lingzhi Zhang
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093
| | - Hongruo Yun
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093
| | - Fiona Murray
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
| | - Ruilin Lu
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093
| | - Lin Wang
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093
| | - Vivian Hook
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
- Skaggs School of Pharmacy, University of California San Diego, La Jolla, CA 92093
| | - Paul A. Insel
- Department of Pharmacology, University of California San Diego, La Jolla, CA 92093
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
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Leto G, Sepporta MV, Crescimanno M, Flandina C, Tumminello FM. Cathepsin L in metastatic bone disease: therapeutic implications. Biol Chem 2010; 391:655-64. [DOI: 10.1515/bc.2010.069] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
AbstractCathepsin L is a lysosomal cysteine proteinase primarily devoted to the metabolic turnover of intracellular proteins. However, accumulating evidence suggests that this endopeptidase might also be implicated in the regulation of other important biological functions, including bone resorption in normal and pathological conditions. These findings support the concept that cathepsin L, in concert with other proteolytic enzymes involved in bone remodeling processes, could contribute to facilitate bone metastasis formation. In support of this hypothesis, recent studies indicate that cathepsin L can foster this process by triggering multiple mechanisms which, in part, differ from those of the major cysteine proteinase of osteoclasts, namely cathepsin K. Therefore, cathepsin L can be regarded as an additional target in the treatment of patients with metastatic bone disease. This review discusses the clinical and therapeutic implications related to these findings.
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Dennemärker J, Lohmüller T, Mayerle J, Tacke M, Lerch MM, Coussens LM, Peters C, Reinheckel T. Deficiency for the cysteine protease cathepsin L promotes tumor progression in mouse epidermis. Oncogene 2009; 29:1611-21. [PMID: 20023699 DOI: 10.1038/onc.2009.466] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
To define a functional role for the endosomal/lysosomal cysteine protease cathepsin L (Ctsl) during squamous carcinogenesis, we generated mice harboring a constitutive Ctsl deficiency in addition to epithelial expression of the human papillomavirus type 16 oncogenes (human cytokeratin 14 (K14)-HPV16). We found enhanced tumor progression and metastasis in the absence of Ctsl. As tumor progression in K14-HPV16 mice is dependent on inflammation and angiogenesis, we examined immune cell infiltration and vascularization without finding any effect of the Ctsl genotype. In contrast, keratinocyte-specific transgenic expression of cathepsin V, the human orthologue of mouse Ctsl, in otherwise Ctsl-deficient K14-HPV16 mice restored the phenotype observed in the control HPV16 skin. To better understand this phenotype at the molecular level, we measured several oncogenic signal transduction pathways in primary keratinocytes on stimulation with keratinocyte-conditioned cell culture medium. We found increased activation of protein kinase B/Akt and mitogen-activated protein kinase pathways in protease-deficient cells, especially if treated with media conditioned by Ctsl-deficient keratinocytes. Similarly, the level of active GTP-Ras was increased in Ctsl-deficient epidermis. We conclude that Ctsl is critical for the termination of growth factor signaling in the endosomal/lysosomal compartment of keratinocytes and, therefore, functions as an anti-tumor protease.
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Affiliation(s)
- J Dennemärker
- Institute for Molecular Medicine and Cell Research, Albert-Ludwigs-University Freiburg, Freiburg, Germany
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Lankelma JM, Voorend DM, Barwari T, Koetsveld J, Van der Spek AH, De Porto APNA, Van Rooijen G, Van Noorden CJF. Cathepsin L, target in cancer treatment? Life Sci 2009; 86:225-33. [PMID: 19958782 DOI: 10.1016/j.lfs.2009.11.016] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 11/11/2009] [Accepted: 11/24/2009] [Indexed: 12/12/2022]
Abstract
Cathepsin L, a cysteine protease, is considered to be a potential therapeutic target in cancer treatment. Proteases are involved in the development and progression of cancer. Inhibition of activity of specific proteases may slow down cancer progression. In this review, we evaluate recent studies on the inhibition of cathepsin L in cancer. The effects of cathepsin L inhibition as a monotherapy on apoptosis and angiogenesis in cancer are ambiguous. Cathepsin L inhibition seems to reduce invasion and metastasis, but there is concern that selective cathepsin L inhibition induces compensatory activity by other cathepsins. The combination of cathepsin L inhibition with conventional chemotherapy seems to be more promising and has yielded more consistent results. Future research should be focused on the mechanisms and effects of this combination therapy.
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Affiliation(s)
- Jacqueline M Lankelma
- Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam, Meibergdreef 15, 1105 AZ Amsterdam, The Netherlands.
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