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Ham JM, Kim M, Kim T, Ryu SE, Park H. Structure-Based De Novo Design for the Discovery of Miniprotein Inhibitors Targeting Oncogenic Mutant BRAF. Int J Mol Sci 2024; 25:5535. [PMID: 38791574 PMCID: PMC11122373 DOI: 10.3390/ijms25105535] [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: 04/07/2024] [Revised: 05/10/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
Being a component of the Ras/Raf/MEK/ERK signaling pathway crucial for cellular responses, the VRAF murine sarcoma viral oncogene homologue B1 (BRAF) kinase has emerged as a promising target for anticancer drug discovery due to oncogenic mutations that lead to pathway hyperactivation. Despite the discovery of several small-molecule BRAF kinase inhibitors targeting oncogenic mutants, their clinical utility has been limited by challenges such as off-target effects and suboptimal pharmacological properties. This study focuses on identifying miniprotein inhibitors for the oncogenic V600E mutant BRAF, leveraging their potential as versatile drug candidates. Using a structure-based de novo design approach based on binding affinity to V600E mutant BRAF and hydration energy, 39 candidate miniprotein inhibitors comprising three helices and 69 amino acids were generated from the substructure of the endogenous ligand protein (14-3-3). Through in vitro binding and kinase inhibition assays, two miniproteins (63 and 76) were discovered as novel inhibitors of V600E mutant BRAF with low-micromolar activity, with miniprotein 76 demonstrating a specific impediment to MEK1 phosphorylation in mammalian cells. These findings highlight miniprotein 76 as a potential lead compound for developing new cancer therapeutics, and the structural features contributing to its biochemical potency against V600E mutant BRAF are discussed in detail.
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Affiliation(s)
- Jae Min Ham
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimri-ro, Seong-dong-gu, Seoul 04763, Republic of Korea; (J.M.H.); (M.K.)
| | - Myeongbin Kim
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimri-ro, Seong-dong-gu, Seoul 04763, Republic of Korea; (J.M.H.); (M.K.)
| | - Taeho Kim
- Department of Bioscience and Biotechnology, Sejong University, 209 Neungdong-ro, Kwangjin-gu, Seoul 05006, Republic of Korea;
| | - Seong Eon Ryu
- Department of Bioengineering, College of Engineering, Hanyang University, 222 Wangsimri-ro, Seong-dong-gu, Seoul 04763, Republic of Korea; (J.M.H.); (M.K.)
| | - Hwangseo Park
- Department of Bioscience and Biotechnology, Sejong University, 209 Neungdong-ro, Kwangjin-gu, Seoul 05006, Republic of Korea;
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2
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Grynberg S, Vered M, Shapira-Frommer R, Asher N, Ben-Betzalel G, Stoff R, Steinberg Y, Amariglio N, Greenberg G, Barshack I, Toren A, Yahalom R, Schachter J, Rechavi G, Hirschhorn A, Abebe Campino G. Neoadjuvant BRAF-targeted therapy for ameloblastoma of the mandible: an organ preservation approach. J Natl Cancer Inst 2024; 116:539-546. [PMID: 37966914 DOI: 10.1093/jnci/djad232] [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: 06/15/2023] [Revised: 10/06/2023] [Accepted: 11/03/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Ameloblastoma is a rare odontogenic neoplasm frequently located in the mandible. Standard treatment involves radical bone resection and immediate reconstruction, causing functional, aesthetic, and psychological impairments. The BRAF V600E mutation is present in approximately 80% of mandible ameloblastomas, and BRAF inhibitors have demonstrated sustained responses in unresectable cases. METHODS We identified ameloblastoma patients planned for ablative surgery and screened them for BRAF V600E mutation. Neoadjuvant BRAF inhibitors were offered to facilitate jaw preservation surgery. Retrospective data collection encompassed treatment regimens, tolerability, tumor response, and conversion to mandible preservation surgery. RESULTS Between 2017 and 2022, a total of 11 patients received dabrafenib (n = 6) or dabrafenib with trametinib (n = 5). The median age was 19 (range = 10-83) years. Median treatment duration was 10 (range = 3-20) months. All (100%) patients achieved a radiological response. Ten (91%) patients successfully converted to mandible preservation surgery with residual tumor enucleation. One patient attained complete radiological response, and surgery was not performed. Among the 10 surgically treated patients, all exhibited a pathological response, with 4 achieving near complete response and 6 partial response. At a median follow-up of 14 (range = 7-37) months after surgery, 1 case of recurrence was observed. Grade 1-2 adverse effects were reported in 8 (73%) patients, with a single case of grade 3 (hepatitis). Dose modification was necessary for 3 patients, and 4 experienced treatment interruptions, while 1 patient permanently discontinued therapy. CONCLUSIONS Neoadjuvant BRAF inhibition may offer a safe and effective strategy for organ preservation in mandible ameloblastoma treatment.
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Affiliation(s)
- Shirly Grynberg
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Marilena Vered
- Institue of Pathology, Sheba Medical Center, Tel Hashomer, Israel
| | - Ronnie Shapira-Frommer
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Nethanel Asher
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Guy Ben-Betzalel
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Ronen Stoff
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Yael Steinberg
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Ninette Amariglio
- Sheba Cancer Research Center, Wohl Institute of Translational Medicine, Sheba Medical Center, Tel Hashomer, Israel
| | - Gahl Greenberg
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel
| | - Iris Barshack
- Institue of Pathology, Sheba Medical Center, Tel Hashomer, Israel
| | - Amos Toren
- Division of Pediatric Hemato-Oncology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - Ran Yahalom
- Department of Cranio-Maxillofacial Surgery, Sheba Medical Center, Tel Hashomer, Israel
| | - Jacob Schachter
- Ella Lemelbaum Institute of Immuno-Oncology and Melanoma, Sheba Medical Center, Tel Hashomer, Israel
| | - Gideon Rechavi
- Sheba Cancer Research Center, Wohl Institute of Translational Medicine, Sheba Medical Center, Tel Hashomer, Israel
| | - Ariel Hirschhorn
- Department of Cranio-Maxillofacial Surgery, Sheba Medical Center, Tel Hashomer, Israel
| | - Gadi Abebe Campino
- Division of Pediatric Hemato-Oncology, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
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3
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Jolfayi AG, Kohansal E, Ghasemi S, Naderi N, Hesami M, MozafaryBazargany M, Moghadam MH, Fazelifar AF, Maleki M, Kalayinia S. Exploring TTN variants as genetic insights into cardiomyopathy pathogenesis and potential emerging clues to molecular mechanisms in cardiomyopathies. Sci Rep 2024; 14:5313. [PMID: 38438525 PMCID: PMC10912352 DOI: 10.1038/s41598-024-56154-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/01/2024] [Indexed: 03/06/2024] Open
Abstract
The giant protein titin (TTN) is a sarcomeric protein that forms the myofibrillar backbone for the components of the contractile machinery which plays a crucial role in muscle disorders and cardiomyopathies. Diagnosing TTN pathogenic variants has important implications for patient management and genetic counseling. Genetic testing for TTN variants can help identify individuals at risk for developing cardiomyopathies, allowing for early intervention and personalized treatment strategies. Furthermore, identifying TTN variants can inform prognosis and guide therapeutic decisions. Deciphering the intricate genotype-phenotype correlations between TTN variants and their pathologic traits in cardiomyopathies is imperative for gene-based diagnosis, risk assessment, and personalized clinical management. With the increasing use of next-generation sequencing (NGS), a high number of variants in the TTN gene have been detected in patients with cardiomyopathies. However, not all TTN variants detected in cardiomyopathy cohorts can be assumed to be disease-causing. The interpretation of TTN variants remains challenging due to high background population variation. This narrative review aimed to comprehensively summarize current evidence on TTN variants identified in published cardiomyopathy studies and determine which specific variants are likely pathogenic contributors to cardiomyopathy development.
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Affiliation(s)
- Amir Ghaffari Jolfayi
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Erfan Kohansal
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Serwa Ghasemi
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Niloofar Naderi
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mahshid Hesami
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | | | - Maryam Hosseini Moghadam
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Amir Farjam Fazelifar
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Maleki
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Samira Kalayinia
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran.
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4
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Wang C, Zhang Y, Zhang T, Xu J, Yan S, Liang B, Xing D. Epidermal growth factor receptor dual-target inhibitors as a novel therapy for cancer: A review. Int J Biol Macromol 2023; 253:127440. [PMID: 37839594 DOI: 10.1016/j.ijbiomac.2023.127440] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 10/10/2023] [Accepted: 10/12/2023] [Indexed: 10/17/2023]
Abstract
Overexpression of the epidermal growth factor receptor (EGFR) has been linked to several human cancers, including esophageal cancer, pancreatic cancer, anal cancer, breast cancer, and lung cancer, particularly non-small cell lung cancer (NSCLC). Therefore, EGFR has emerged as a critical target for treating solid tumors. Many 1st-, 2nd-, 3rd-, and 4th-generation EGFR single-target inhibitors with clinical efficacy have been designed and synthesized in recent years. Drug resistance caused by EGFR mutations has posed a significant challenge to the large-scale clinical application of EGFR single-target inhibitors and the discovery of novel EGFR inhibitors. Therapeutic methods for overcoming multipoint EGFR mutations are still needed in medicine. EGFR dual-target inhibitors are more promising than single-target inhibitors as they have a lower risk of drug resistance, higher efficacy, lower dosage, and fewer adverse events. EGFR dual-target inhibitors have been developed sequentially to date, providing new options for remission in patients with previously untreatable malignancies and laying the groundwork for a future generation of compounds. This paper introduces the EGFR family proteins and their synergistic effects with other anticancer targets, and provides a comprehensive review of the development of EGFR dual-target inhibitors in cancer, as well as the opportunities and challenges associated with those fields.
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Affiliation(s)
- Chao Wang
- The Affiliated Hospital of Qingdao University, Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China
| | - Yujing Zhang
- The Affiliated Cardiovascular Hospital of Qingdao University, Qingdao University, Qingdao 266071, Shandong, China.
| | - Tingting Zhang
- The Affiliated Hospital of Qingdao University, Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China
| | - Jiazhen Xu
- The Affiliated Hospital of Qingdao University, Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China
| | - Saisai Yan
- The Affiliated Hospital of Qingdao University, Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China.
| | - Bing Liang
- The Affiliated Hospital of Qingdao University, Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China.
| | - Dongming Xing
- The Affiliated Hospital of Qingdao University, Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China; Qingdao Cancer Institute, Qingdao University, Qingdao 266071, Shandong, China; School of Life Sciences, Tsinghua University, Beijing 100084, China
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5
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Singh A, Sonawane P, Kumar A, Singh H, Naumovich V, Pathak P, Grishina M, Khalilullah H, Jaremko M, Emwas AH, Verma A, Kumar P. Challenges and Opportunities in the Crusade of BRAF Inhibitors: From 2002 to 2022. ACS OMEGA 2023; 8:27819-27844. [PMID: 37576670 PMCID: PMC10413849 DOI: 10.1021/acsomega.3c00332] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/27/2023] [Indexed: 08/15/2023]
Abstract
Serine/threonine-protein kinase B-Raf (BRAF; RAF = rapidly accelerated fibrosarcoma) plays an important role in the mitogen-activated protein kinase (MAPK) signaling cascade. Somatic mutations in the BRAF gene were first discovered in 2002 by Davies et al., which was a major breakthrough in cancer research. Subsequently, three different classes of BRAF mutants have been discovered. This class includes class I monomeric mutants (BRAFV600), class II BRAF homodimer mutants (non-V600), and class III BRAF heterodimers (non-V600). Cancers caused by these include melanoma, thyroid cancer, ovarian cancer, colorectal cancer, nonsmall cell lung cancer, and others. In this study, we have highlighted the major binding pockets in BRAF protein, their active and inactive conformations with inhibitors, and BRAF dimerization and its importance in paradoxical activation and BRAF mutation. We have discussed the first-, second-, and third-generation drugs approved by the Food and Drug Administration and drugs under clinical trials with all four different binding approaches with DFG-IN/OUT and αC-IN/OUT for BRAF protein. We have investigated particular aspects and difficulties with all three generations of inhibitors. Finally, this study has also covered recent developments in synthetic BRAF inhibitors (from their discovery in 2002 to 2022), their unique properties, and importance in inhibiting BRAF mutants.
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Affiliation(s)
- Ankit
Kumar Singh
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Pankaj Sonawane
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Adarsh Kumar
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Harshwardhan Singh
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
| | - Vladislav Naumovich
- Laboratory
of Computational Modeling of Drugs, Higher Medical and Biological
School, South Ural State University, Chelyabinsk 454008, Russia
| | - Prateek Pathak
- Laboratory
of Computational Modeling of Drugs, Higher Medical and Biological
School, South Ural State University, Chelyabinsk 454008, Russia
| | - Maria Grishina
- Laboratory
of Computational Modeling of Drugs, Higher Medical and Biological
School, South Ural State University, Chelyabinsk 454008, Russia
| | - Habibullah Khalilullah
- Department
of Pharmaceutical Chemistry and Pharmacognosy, Unaizah College of
Pharmacy, Qassim University, Unayzah 51911, Saudi Arabia
| | - Mariusz Jaremko
- Smart-Health
Initiative and Red Sea Research Center, Division of Biological and
Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Abdul-Hamid Emwas
- Core
Laboratories, King Abdullah University of
Science and Technology, Thuwal 23955-6900, Saudi
Arabia
| | - Amita Verma
- Bioorganic
and Medicinal Chemistry Research Laboratory, Department of Pharmaceutical
Sciences, Sam Higginbottom University of
Agriculture, Technology and Sciences, Prayagraj 211007, India
| | - Pradeep Kumar
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Ghudda, Bathinda 151401, India
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6
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Maji L, Teli G, Raghavendra NM, Sengupta S, Pal R, Ghara A, Matada GSP. An updated literature on BRAF inhibitors (2018-2023). Mol Divers 2023:10.1007/s11030-023-10699-3. [PMID: 37470921 DOI: 10.1007/s11030-023-10699-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 07/10/2023] [Indexed: 07/21/2023]
Abstract
BRAF is the most common serine-threonine protein kinase and regulates signal transduction from RAS to MEK inside the cell. The BRAF is a highly active isoform of RAF kinase. BRAF has two domains such as regulatory and kinase domains. The BRAF inhibitors bind in the c-terminus of the kinase domain and inhibit the downstream pathways. The mutation occurs mainly in the A-loop of the kinase domain. The mutation occurs due to a conversion of valine to glutamate/lysine/arginine/aspartic acid at 600th position. Among the diverse mutations, BRAFV600E is the most common and responsible for numerous cancer such as melanoma, colorectal, ovarian, and thyroid cancer. Due to mutations in RAC1, loss of PTEN, NF1, CCND1, USP28-FBW7 complex, COT overexpression, and CCND1 amplification, the BRAF kinase enzyme developed resistance over the commercially available BRAF inhibitors. There is still unmute urgence for the development of BRAF inhibitors to overcome the persistent limitation such as resistance, mutation, and adverse effects of drugs. In the current study, we described the structure, activation, downstream signaling pathway, and mutation of BRAF. Our group also provided a detailed review of BRAF inhibitors from the last five years (2018-2023) highlighting the structure-activity relationship, mechanistic study, and molecular docking studies. We hope that the current analysis will be a useful resource for researchers and provide chemists a glimpse into the future as design and development of more effective and secure BRAF kinase inhibitors. The development of BRAF inhibitors to overcome the persistent limitation such as resistance, mutation, and adverse effects of drugs. In depth description about different heterocyclic scaffolds (quinoline, imidazole, pyridine, triazole, pyrrole etc.) as BRAF inhibitors from the last five years (2018-2023) highlighting the structure-activity relationship, mechanistic study, and molecular docking studies.
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Affiliation(s)
- Lalmohan Maji
- Department of Pharmaceutical Chemistry, Integrated Drug Discovery Centre, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
| | - Ghanshyam Teli
- Department of Pharmaceutical Chemistry, Integrated Drug Discovery Centre, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
| | | | - Sindhuja Sengupta
- Department of Pharmaceutical Chemistry, Integrated Drug Discovery Centre, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
| | - Rohit Pal
- Department of Pharmaceutical Chemistry, Integrated Drug Discovery Centre, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
| | - Abhishek Ghara
- Department of Pharmaceutical Chemistry, Integrated Drug Discovery Centre, Acharya & BM Reddy College of Pharmacy, Bengaluru, Karnataka, India
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7
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Kraehenbuehl L, Schneider S, Pawlik L, Mangana J, Cheng P, Dummer R, Meier-Schiesser B. Cutaneous Adverse Events of Systemic Melanoma Treatments: A Retrospective Single-Center Analysis. Pharmaceuticals (Basel) 2023; 16:935. [PMID: 37513847 PMCID: PMC10383648 DOI: 10.3390/ph16070935] [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: 05/10/2023] [Revised: 05/28/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
Recent progress in the treatment of advanced melanoma has led to the improved survival of affected patients. However, novel treatments also lead to considerable and distinct skin toxicity. To further characterize cutaneous adverse events (AE) of systemic treatments, we conducted a single-center retrospective study of biopsy-proven cutaneous adverse events of melanoma treatment over a period of 10 years at the University Hospital of Zurich, Switzerland. In 102 identified patients, 135 individual skin AEs developed. Immune checkpoint blockade (ICB) was causal for 81 skin AEs, and 54 were related to targeted therapies (TT). Recorded types of skin AEs included lichenoid, maculopapular, acneiform, urticarial, panniculitis, folliculitis, psoriasiform, granulomatous, eczematous, and others. The incidence of skin AEs was higher with TT (18.54%) than with ICB (9.64%, p = 0.0029). Most AEs were low-grade, although 19.21% of AEs were common terminology criteria for adverse events (CTCAE) Grades 3 or 4. A large spectrum of skin AEs was documented during treatment of advanced melanoma, and distinct phenotypes were observed, depending on treatment classes. AEs occurred earlier during treatment with TT than with ICB, and distinct types of skin AEs were associated with respective treatment classes. This study comprehensively describes skin AEs occurring during systemic treatment for melanoma at a single center.
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Affiliation(s)
- Lukas Kraehenbuehl
- Department of Dermatology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland
| | - Stephanie Schneider
- Department of Dermatology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland
| | - Laura Pawlik
- Department of Dermatology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland
| | - Joanna Mangana
- Department of Dermatology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland
| | - Phil Cheng
- Department of Dermatology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland
| | - Reinhard Dummer
- Department of Dermatology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland
| | - Barbara Meier-Schiesser
- Department of Dermatology, University Hospital Zurich (USZ), University of Zurich (UZH), 8091 Zurich, Switzerland
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Handa S, Lee JO, Derkach A, Stone RM, Saven A, Altman JK, Grever MR, Rai KR, Shukla M, Vemuri S, Montoya S, Taylor J, Abdel-Wahab O, Tallman MS, Park JH. Long-term outcomes in patients with relapsed or refractory hairy cell leukemia treated with vemurafenib monotherapy. Blood 2022; 140:2663-2671. [PMID: 35930750 PMCID: PMC9935554 DOI: 10.1182/blood.2022016183] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 07/15/2022] [Accepted: 07/22/2022] [Indexed: 12/30/2022] Open
Abstract
Vemurafenib, an oral BRAF inhibitor, has demonstrated high response rates in relapsed/refractory (R/R) hairy cell leukemia (HCL). However, little is known about long-term outcomes and response to retreatment. Herein, we report the results of 36 patients with R/R HCL treated with vemurafenib from the United States arm of the phase 2 clinical trial (NCT01711632). The best overall response rate was 86%, including 33% complete response (CR) and 53% partial response (PR). After a median follow-up of 40 months, 21 of 31 responders (68%) experienced relapse with a median relapse-free survival (RFS) of 19 months (range, 12.5-53.9 months). There was no significant difference in the RFS for patients with CR vs PR. Fourteen of 21 (67%) relapsed patients were retreated with vemurafenib, with 86% achieving complete hematologic response. Two patients acquired resistance to vemurafenib with the emergence of new KRAS and CDKN2A mutations, respectively. Six of 12 (50%) responders to vemurafenib retreatment experienced another relapse with a median RFS of 12.7 months. Overall survival (OS) was 82% at 4 years, with a significantly shorter OS in patients who relapsed within 1 year of initial treatment with vemurafenib. Higher cumulative doses or a longer duration of treatment did not lengthen the durability of response. All adverse events in the retreatment cohort were grade 1/2 except for 1 case of a grade 3 rash and 1 grade 3 fever/pneumonia. Our data suggest that vemurafenib retreatment is a safe and effective option for patients with R/R HCL.
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Affiliation(s)
- Shivani Handa
- Division of Hematology-Oncology, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jeong-Ok Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Andriy Derkach
- Department of Biostatistics and Epidemiology, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Richard M. Stone
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
| | - Alan Saven
- Division of Hematology and Oncology, Scripps Clinic, La Jolla, CA
| | - Jessica K. Altman
- Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL
| | | | - Kanti R. Rai
- Cancer Institute at Zucker School of Medicine Hofstra-Northwell, New Hyde Park, NY
| | | | - Shreya Vemuri
- Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Skye Montoya
- Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL
| | - Justin Taylor
- Department of Medicine, Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL
| | - Omar Abdel-Wahab
- Department of Medicine, Human Oncology and Pathogenesis Program, Memorial Sloan-Kettering Cancer Center, New York, NY
- Department of Medicine, Weill Cornell Medical College, New York, NY
- Leukemia Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Martin S. Tallman
- Department of Medicine, Weill Cornell Medical College, New York, NY
- Leukemia Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Jae H. Park
- Department of Medicine, Weill Cornell Medical College, New York, NY
- Leukemia Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY
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9
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Rao Y, Zhu J, Zheng H, Dong W, Lin Q. A novel melanoma prognostic model based on the ferroptosis-related long non-coding RNA. Front Oncol 2022; 12:929960. [PMID: 36313708 PMCID: PMC9598429 DOI: 10.3389/fonc.2022.929960] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 09/23/2022] [Indexed: 08/27/2023] Open
Abstract
Ferroptosis is an iron-dependent programmed cell death related to the biological process of many kinds of tumors. Long noncoding RNAs (LncRNA) have been found to play essential roles in the tumor, and their functions in the ferroptosis of tumor cells have been partially discovered. However, there is no summary of ferroptosis-related LncRNA and its functions in melanoma. In the present study, we aim to explore the expression profile of ferroptosis-related LncRNA genes and their value in melanoma prognosis by bioinformatics analysis. The expression of ferroptosis-related gene (FRG) from melanoma clinical data was extracted based on the Cancer Genome Atlas (TCGA) database. By screening the RNA expression data of 472 cases of melanoma and 810 cases of normal skin, eighteen ferroptosis-related differential genes were found to be related to the overall survival rate. Furthermore, 384 ferroptosis-related LncRNAs were discovered through constructing the mRNA-LncRNA co-expression network, and ten of them were found with prognostic significance in melanoma by multivariate Cox analysis. Risk assessment showed that the high expression of LncRNA00520 is associated with poor prognosis, while the increased expression of the other LncRNA is beneficial to the prognosis of patients with melanoma. From univariate and multivariate Cox regression analysis, there were ten ferroptosis-related LncRNA risk models towards to be significant independent prognostic factors for patients with melanoma and valuable predictive factors for overall survival (OS)(P<0.05). The ROC curve further suggested that the risk score has relatively reliable predictive ability (AUC=0.718). The protein level of ferroptosis-related genes was verified by the HPA database and IHC test, leading to the discovery that the expressions of ALOX5, PEBP1, ACSL4, and ZEB1 proteins up-regulated in tumor tissues, and existed differences between tumor tissues and normal tissues. In conclusion, we identified ten ferroptosis-related LncRNA and constructed a prognosis model base.
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Affiliation(s)
- Yamin Rao
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinchao Zhu
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Haiyan Zheng
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Dong
- Department of Pathology, Eastern Hepatobilliary Surgery Hospital, The Second Military Medical University, Shanghai, China
| | - Qingyuan Lin
- Department of Pathology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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10
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Tan L, Zhang J, Wang Y, Wang X, Wang Y, Zhang Z, Shuai W, Wang G, Chen J, Wang C, Ouyang L, Li W. Development of Dual Inhibitors Targeting Epidermal Growth Factor Receptor in Cancer Therapy. J Med Chem 2022; 65:5149-5183. [PMID: 35311289 DOI: 10.1021/acs.jmedchem.1c01714] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Epidermal growth factor receptor (EGFR) is of great significance in mediating cell signaling transduction and tumor behaviors. Currently, third-generation inhibitors of EGFR, especially osimertinib, are at the clinical frontier for the treatment of EGFR-mutant non-small-cell lung cancer (NSCLC). Regrettably, the rapidly developing drug resistance caused by EGFR mutations and the compensatory mechanism have largely limited their clinical efficacy. Given the synergistic effect between EGFR and other compensatory targets during tumorigenesis and tumor development, EGFR dual-target inhibitors are promising for their reduced risk of drug resistance, higher efficacy, lower dosage, and fewer adverse events than those of single-target inhibitors. Hence, we present the synergistic mechanism underlying the role of EGFR dual-target inhibitors against drug resistance, their structure-activity relationships, and their therapeutic potential. Most importantly, we emphasize the optimal target combinations and design strategies for EGFR dual-target inhibitors and provide some perspectives on new challenges and future directions in this field.
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Affiliation(s)
- Lun Tan
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Jifa Zhang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Yuxi Wang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Xiye Wang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Yanyan Wang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Zhixiong Zhang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Wen Shuai
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Guan Wang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Juncheng Chen
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Chengdi Wang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Liang Ouyang
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
| | - Weimin Li
- Department of Respiratory and Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Targeted Tracer Research and Development Laboratory, Institute of Respiratory Health, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China.,Precision Medicine Key Laboratory of Sichuan Province and Precision Medicine Research Center, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, China
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11
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Cerquaglia A, Lupidi M, Chhablani J, Gujar R, Iaccheri B, Fiore T, Fruttini D, Ramundo A, Vupparaboina KK, Castellani L, Simonetti E, De Carolis L, Tiacci E, Falini B, Cagini C. Choroidal vasculature analysis in MEK inhibitor-associated retinopathy. Eur J Ophthalmol 2022; 32:3564-3573. [PMID: 35195471 DOI: 10.1177/11206721221081471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE To evaluate choroidal vascularity index (CVI) in patients developing mitogen-activated protein kinase kinase (MEK) inhibitor-associated retinopathy (MEKAR). METHODS In this prospective observational study, extensive ophthalmic examination was performed, including enhanced-depth-imaging-optical coherence tomography (EDI-OCT). EDI-OCT scans of patients receiving Cobimetinib, taken at baseline and at MEKAR manifestation, were considered for choroid analysis. Choroidal thickness (CT) was measured on high-resolution b-scans passing through the fovea at three different locations. Same scans were therefore imported for binarization into a previously reported software and CVI was calculated as the ratio of luminal area (LA) to total choroid area (TCA). RESULTS When compared to baseline, eyes with MEKAR (14 eyes) did not show significative CT variation in subfoveal region (p = 0,57), 750-µm-nasal to the fovea (p = 0,08) and 750-µm-temporal to the fovea (p = 0,07). Similarly, there were no statistically significant differences for TCA (p = 0.54), LA (p = 0.85), stromal area (SA) (p = 0.13), LA/SA (p = 0.34) and CVI (p = 0.47). Best-corrected visual acuity was significantly reduced at fluid accumulation when compared to baseline values (p = 0.03), with complete recovery after fluid resolution (p = 0.73). CONCLUSION Multiple parameters reflecting the status of the choroid seemed not influenced by Cobimetinib administration. Retinal pigment epithelium toxic disfunction likely represents the crucial step in MEKAR pathogenesis.
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Affiliation(s)
- Alessio Cerquaglia
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | - Marco Lupidi
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | - Jay Chhablani
- Department of Ophthalmology, 6595University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Ramkailash Gujar
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | - Barbara Iaccheri
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | - Tito Fiore
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | - Daniela Fruttini
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | - Antonello Ramundo
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | | | - Luca Castellani
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
| | - Edoardo Simonetti
- Hematology, Center for Research in Hemato-Oncology (CREO), 9309University of Perugia, Perugia, Italy
| | - Luca De Carolis
- Hematology, Center for Research in Hemato-Oncology (CREO), 9309University of Perugia, Perugia, Italy
| | - Enrico Tiacci
- Hematology, Center for Research in Hemato-Oncology (CREO), 9309University of Perugia, Perugia, Italy
| | - Brunangelo Falini
- Hematology, Center for Research in Hemato-Oncology (CREO), 9309University of Perugia, Perugia, Italy
| | - Carlo Cagini
- Department of Medicine and Surgery, Section of Ophthalmology, 9309University of Perugia, Perugia, Italy
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12
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Khan PS, Rajesh P, Rajendra P, Chaskar MG, Rohidas A, Jaiprakash S. Recent advances in B-RAF inhibitors as anticancer agents. Bioorg Chem 2022; 120:105597. [PMID: 35033817 DOI: 10.1016/j.bioorg.2022.105597] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 12/23/2021] [Accepted: 01/01/2022] [Indexed: 12/24/2022]
Abstract
The significance of B-RAF in the promotion of cell proliferation and motility was explored by the researchers in the past. However, in 2002, several researchers found that mutation in B-RAF leads to cancer. Extensive research on B-RAF mutations suggested B-RAF V600E mutation as a critical predictive, prognostic and diagnostic biomarker in numerous cancers such as melanoma, thyroid, and colorectal cancers. Based on the significance of B-RAF kinase and associated mutation, the present review will give a brief overview about structure and functions of B-RAF enzyme, its role in different types of cancer, available drugs in the market for B-RAF inhibition, chemical classification and SAR studies of reported investigational B-RAF inhibitors in patented and non-patented literature during last decade. The SAR provided for all the reported inhibitors will help researchers to gain knowledge about the possible structural features required for selective B-RAF inhibition. This insightful analysis of B-RAF will certainly help researchers to develop novel anticancer agents in the future.
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Affiliation(s)
- Pathan Shahebaaz Khan
- Y. B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Rauza Baugh, Aurangabad, MS 431001, India
| | - Patil Rajesh
- Sinhgad Technical Education Society's, Smt. Kashibai Navale College of Pharmacy, Kondhwa (Bk), Pune, India
| | - Patil Rajendra
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411007, M.S., India
| | - Manohar G Chaskar
- Prof Ramkrishna More College, Akurdi, Pune 411044, Maharashtra, India
| | - Arote Rohidas
- Department of Molecular Genetics, School of Dentistry, Seoul National University, Seoul. Republic of Korea
| | - Sangshetti Jaiprakash
- Y. B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Rauza Baugh, Aurangabad, MS 431001, India.
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13
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Khader A, Bokhari R, Hakimelahi R, Scheirey C, Afnan J, Braschi-Amirfarzan M, Thomas R. A radiologist’s guide to novel anticancer therapies in the era of precision medicine. Eur J Radiol Open 2022; 9:100406. [PMID: 35265736 PMCID: PMC8899228 DOI: 10.1016/j.ejro.2022.100406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/14/2022] [Accepted: 02/15/2022] [Indexed: 12/13/2022] Open
Abstract
Novel anticancer agents have replaced conventional chemotherapy as first line agents for many cancers, with continued new and expanding indications. Small molecule inhibitors act on cell surface or intracellular targets and prevent the downstream signaling that would otherwise permit tumor growth and spread. Anticancer antibodies can be directed against growth factors or may be immunotherapeutic agents. The latter act by inhibiting mechanisms that cancer cells use to evade the immune system. Hormonal agents act by decreasing levels of hormones that are necessary for the growth of certain cancer cells. Cancer therapy protocols often include novel anticancer agents and conventional chemotherapy used successively or in combination, in order to maximize survival and minimize morbidity. A working knowledge of anti-cancer drug classification will aid the radiologist in assessing response on imaging. Novel anticancer agents include small molecule inhibitors, antibodies and hormones. These agents are predominantly cytostatic and inhibit factors that provide a survival advantage to tumor cells. Modern cancer therapy employs a combination of novel anticancer agents and conventional chemotherapy. It is essential for radiologists to have a broad understanding of these agents and their mechanisms of action.
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14
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Motwani J, Eccles MR. Genetic and Genomic Pathways of Melanoma Development, Invasion and Metastasis. Genes (Basel) 2021; 12:1543. [PMID: 34680938 PMCID: PMC8535311 DOI: 10.3390/genes12101543] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 12/21/2022] Open
Abstract
Melanoma is a serious form of skin cancer that accounts for 80% of skin cancer deaths. Recent studies have suggested that melanoma invasiveness is attributed to phenotype switching, which is a reversible type of cell behaviour with similarities to epithelial to mesenchymal transition. Phenotype switching in melanoma is reported to be independent of genetic alterations, whereas changes in gene transcription, and epigenetic alterations have been associated with invasiveness in melanoma cell lines. Here, we review mutational, transcriptional, and epigenomic alterations that contribute to tumour heterogeneity in melanoma, and their potential to drive melanoma invasion and metastasis. We also discuss three models that are hypothesized to contribute towards aspects of tumour heterogeneity and tumour progression in melanoma, namely the clonal evolution model, the cancer stem cell model, and the phenotype switching model. We discuss the merits and disadvantages of each model in explaining tumour heterogeneity in melanoma, as a precursor to invasion and metastasis.
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Affiliation(s)
- Jyoti Motwani
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin 9016, New Zealand;
| | - Michael R. Eccles
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin 9016, New Zealand;
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1010, New Zealand
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15
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Neupane R, Boddu SHS, Abou-Dahech MS, Bachu RD, Terrero D, Babu RJ, Tiwari AK. Transdermal Delivery of Chemotherapeutics: Strategies, Requirements, and Opportunities. Pharmaceutics 2021; 13:960. [PMID: 34206728 PMCID: PMC8308987 DOI: 10.3390/pharmaceutics13070960] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/17/2021] [Accepted: 06/22/2021] [Indexed: 01/04/2023] Open
Abstract
Chemotherapeutic drugs are primarily administered to cancer patients via oral or parenteral routes. The use of transdermal drug delivery could potentially be a better alternative to decrease the dose frequency and severity of adverse or toxic effects associated with oral or parenteral administration of chemotherapeutic drugs. The transdermal delivery of drugs has shown to be advantageous for the treatment of highly localized tumors in certain types of breast and skin cancers. In addition, the transdermal route can be used to deliver low-dose chemotherapeutics in a sustained manner. The transdermal route can also be utilized for vaccine design in cancer management, for example, vaccines against cervical cancer. However, the design of transdermal formulations may be challenging in terms of the conjugation chemistry of the molecules and the sustained and reproducible delivery of therapeutically efficacious doses. In this review, we discuss the nano-carrier systems, such as nanoparticles, liposomes, etc., used in recent literature to deliver chemotherapeutic agents. The advantages of transdermal route over oral and parenteral routes for popular chemotherapeutic drugs are summarized. Furthermore, we also discuss a possible in silico approach, Formulating for Efficacy™, to design transdermal formulations that would probably be economical, robust, and more efficacious.
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Affiliation(s)
- Rabin Neupane
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA; (R.N.); (M.S.A.-D.); (R.D.B.); (D.T.)
| | - Sai H. S. Boddu
- College of Pharmacy and Health Sciences, Ajman University, Ajman 346, United Arab Emirates;
| | - Mariam Sami Abou-Dahech
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA; (R.N.); (M.S.A.-D.); (R.D.B.); (D.T.)
| | - Rinda Devi Bachu
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA; (R.N.); (M.S.A.-D.); (R.D.B.); (D.T.)
| | - David Terrero
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA; (R.N.); (M.S.A.-D.); (R.D.B.); (D.T.)
| | - R. Jayachandra Babu
- Department of Drug Discovery & Development, Harrison School of Pharmacy, Auburn University, Auburn, AL 36849, USA;
| | - Amit K. Tiwari
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, Toledo, OH 43614, USA; (R.N.); (M.S.A.-D.); (R.D.B.); (D.T.)
- Department of Cancer Biology, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH 43606, USA
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16
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Anko M, Kobayashi Y, Banno K, Aoki D. Current Status and Prospects of Immunotherapy for Gynecologic Melanoma. J Pers Med 2021; 11:jpm11050403. [PMID: 34065883 PMCID: PMC8151394 DOI: 10.3390/jpm11050403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/05/2021] [Accepted: 05/07/2021] [Indexed: 12/24/2022] Open
Abstract
Gynecologic melanomas are rare and have a poor prognosis. Although immunotherapy (immune checkpoint inhibitors) and targeted therapy has greatly improved the systemic treatment of cutaneous melanoma (CM) in recent years, its efficacy in gynecologic melanomas remains uncertain because of the rarity of this malignancy and its scarce literature. This review aimed to evaluate the literature of gynecologic melanomas treated with immunotherapy and targeted therapy through a PubMed search. We identified one study focusing on the overall survival of gynecologic melanomas separately and five case series and nine case reports concentrating on gynecologic melanomas treated with an immune checkpoint inhibitor and/or targeted therapy. Furthermore, the KIT mutation has the highest rate among all mutations in mucosal melanoma types. The KIT inhibitors (Tyrosine kinase inhibitors: TKIs) imatinib and nilotinib could be the treatment options. Moreover, immune checkpoint inhibitors combined with KIT inhibitors may potentially treat cases of resistance to immune checkpoint inhibitors. However, because of the different conditions and a small number of cases, it is difficult to evaluate the efficacy of immunotherapy and targeted therapy for gynecologic melanoma rigorously at this time. Further prospective cohort or randomized trials of gynecologic melanoma alone are needed to assess the treatment with solid evidence.
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17
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Olig2 regulates p53-mediated apoptosis, migration and invasion of melanoma cells. Sci Rep 2021; 11:7778. [PMID: 33833342 PMCID: PMC8032681 DOI: 10.1038/s41598-021-87438-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 03/19/2021] [Indexed: 11/08/2022] Open
Abstract
Melanoma is a disease with a high recurrence rate and poor prognosis; therefore, the need for targeted therapeutics is steadily increasing. Oligodendrocyte transcription factor2 (Olig2) is a basic helix-loop-helix transcription factor that is expressed in the central nervous system during embryonic development. Olig2 is overexpressed in various malignant cell lines such as lung carcinoma, glioma and melanoma. Olig2 is known as a key transcription factor that promotes tumor growth in malignant glioma. However, the role of Olig2 in melanoma is not well characterized. We analyzed the role of Olig2 in apoptosis, migration, and invasion of melanoma cells. We confirmed that Olig2 was overexpressed in melanoma cells and tissues. Reduction of Olig2 increased apoptosis in melanoma cells by increasing p53 level and caspase-3/-7 enzyme activity. In addition, downregulation of Olig2 suppressed migration and invasion of melanoma cells by inhibiting EMT. Reduction of Olig2 inhibited expression of MMP-1 and the enzyme activity of MMP-2/-9 induced by TGF-β. Moreover, Olig2 was involved in the downstream stages of MEK/ERK and PI3K/AKT, which are major signaling pathways in metastatic progression of melanoma. In conclusion, this study demonstrated the crucial roles of Olig2 in apoptosis, migration, and invasion of melanoma and may help to further our understanding of the relationship between Olig2 and melanoma progression.
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18
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Resistance to Molecularly Targeted Therapies in Melanoma. Cancers (Basel) 2021; 13:cancers13051115. [PMID: 33807778 PMCID: PMC7961479 DOI: 10.3390/cancers13051115] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
Malignant melanoma is the most aggressive type of skin cancer with invasive growth patterns. In 2021, 106,110 patients are projected to be diagnosed with melanoma, out of which 7180 are expected to die. Traditional methods like surgery, radiation therapy, and chemotherapy are not effective in the treatment of metastatic and advanced melanoma. Recent approaches to treat melanoma have focused on biomarkers that play significant roles in cell growth, proliferation, migration, and survival. Several FDA-approved molecular targeted therapies such as tyrosine kinase inhibitors (TKIs) have been developed against genetic biomarkers whose overexpression is implicated in tumorigenesis. The use of targeted therapies as an alternative or supplement to immunotherapy has revolutionized the management of metastatic melanoma. Although this treatment strategy is more efficacious and less toxic in comparison to traditional therapies, targeted therapies are less effective after prolonged treatment due to acquired resistance caused by mutations and activation of alternative mechanisms in melanoma tumors. Recent studies focus on understanding the mechanisms of acquired resistance to these current therapies. Further research is needed for the development of better approaches to improve prognosis in melanoma patients. In this article, various melanoma biomarkers including BRAF, MEK, RAS, c-KIT, VEGFR, c-MET and PI3K are described, and their potential mechanisms for drug resistance are discussed.
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19
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Distribution pattern of tumor infiltrating lymphocytes and tumor microenvironment composition as prognostic indicators in anorectal malignant melanoma. Mod Pathol 2021; 34:141-160. [PMID: 32709987 DOI: 10.1038/s41379-020-0633-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/15/2020] [Accepted: 07/15/2020] [Indexed: 12/17/2022]
Abstract
Anorectal malignant melanoma (ARMM) is a rare disease with poor prognosis. Determining ARMM prognosis precisely is difficult due to the lack of proper assessment techniques. Immunotherapy has proven effective against cutaneous malignant melanoma and may show efficacy in ARMM. Herein, we assessed the immune profile of ARMM to identify possible prognostic biomarkers. Twenty-two ARMM formalin-fixed and paraffin-embedded samples were evaluated using an nCounter® PanCancer Immune Profiling Panel. Validation was performed through immunohistochemical staining for CD3, CD8, Foxp3, CD68, CD163, and PD-L1. RNA analysis revealed significantly decreased scores for pathways involved in cell regulation and function, as well as chemokines, in recurrent patients compared to nonrecurrent patients. In cell-type profiling, the recurrent cases displayed significantly low tumor infiltrating lymphocyte (TIL) scores. Recurrence/death prediction models were defined using logistic regression and showed significantly lower scores in recurrent and deceased patients (all, P < 0.001) compared to those in nonrecurrent and surviving patients. The high total TIL and tumor-associated macrophage (TAM) groups had significantly better overall survival outcomes compared to the low total TIL and TAM groups (P = 0.007 and P = 0.035, respectively). In addition, the presence of CD3 + TILs in the invasion front was an independent favorable prognostic indicator (P = 0.003, hazard ratio = 0.21, 95% confidential interval, 0.01-0.41). Patients with inflamed or brisk-infiltration type tumors also had a significantly better overall survival than that of patients with immune-desert/excluded and absent/non-brisk type tumors (P = 0.03 and P = 0.0023, respectively). In conclusion, TILs have a strong prognostic value in ARMM, and the quantification of TILs and an analysis of the TIL phenotype and infiltration pattern during pathological diagnosis are essential to guide treatment strategies and accurate prognosis in ARMM.
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Sarkisian S, McIntosh A, Nair S, Shoushtari AN, Callahan M. Fibroblast Growth Factor Receptor 3 Amplified Metastatic Melanoma Treated With Erdafitinib. Cureus 2020; 12:e11231. [PMID: 33269159 PMCID: PMC7704269 DOI: 10.7759/cureus.11231] [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] [Indexed: 11/18/2022] Open
Abstract
The treatment of metastatic melanoma has changed dramatically in the last decade with the introduction of immunotherapy and targeted therapy. A futile disease in the past is now treated with various options, resulting in improvement in progression-free and overall survivals, along with improvement in the quality of life. Having said that, the majority of patients with metastatic melanoma eventually succumb to the disease. Molecular profiling of each tumor in the advanced stage is standard of care now, as this would lead to individualized treatment options for each patient. Here, we present a rare case of fibroblast growth factor receptor 3 (FGFR 3) amplified metastatic melanoma, treated rather unconventionally with FGFR 3 inhibitor erdafitinib.
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Castañeda-Reyes ED, Perea-Flores MDJ, Davila-Ortiz G, Lee Y, Gonzalez de Mejia E. Development, Characterization and Use of Liposomes as Amphipathic Transporters of Bioactive Compounds for Melanoma Treatment and Reduction of Skin Inflammation: A Review. Int J Nanomedicine 2020; 15:7627-7650. [PMID: 33116492 PMCID: PMC7549499 DOI: 10.2147/ijn.s263516] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 08/31/2020] [Indexed: 12/21/2022] Open
Abstract
The skin is the largest organ in the human body, providing a barrier to the external environment. It is composed of three layers: epidermis, dermis and hypodermis. The most external epidermis is exposed to stress factors that may lead to skin conditions such as photo-aging and skin cancer. Some treatments for skin disease utilize the incorporation of drugs or bioactive compounds into nanocarriers known as liposomes. Liposomes are membranes whose sizes range from nano to micrometers and are composed mostly of phospholipids and cholesterol, forming similar structures to cell membranes. Thus, skin treatments with liposomes have lower toxicity in comparison to traditional treatment routes such as parenteral and oral. Furthermore, addition of edge activators to the liposomes decreases the rigidity of the bilayer structure making it deformable, thereby improving skin permeability. Liposomes are composed of an aqueous core and a lipidic bilayer, which confers their amphiphilic property. Thus, they can carry hydrophobic and hydrophilic compounds, even simultaneously. Current applications of these nanocarriers are mainly in the cosmetic and pharmaceutic industries. Nevertheless, new research has revealed promising results regarding the effectiveness of liposomes for transporting bioactive compounds through the skin. Liposomes have been well studied; however, additional research is needed on the efficacy of liposomes loaded with bioactive peptides for skin delivery. The objective of this review is to provide an up-to-date description of existing techniques for the development of liposomes and their use as transporters of bioactive compounds in skin conditions such as melanoma and skin inflammation. Furthermore, to gain an understanding of the behavior of liposomes during the process of skin delivery of bioactive compounds into skin cells.
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Affiliation(s)
- Erick Damian Castañeda-Reyes
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Unidad Profesional Adolfo Lopez Mateos, Ciudad De México, 07738, México.,Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Maria de Jesús Perea-Flores
- Centro de Nanociencias y Micro y Nanotecnologías, Instituto Politécnico Nacional (IPN), Unidad Profesional Adolfo López Mateos, Ciudad De México 07738, México
| | - Gloria Davila-Ortiz
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional (IPN), Unidad Profesional Adolfo Lopez Mateos, Ciudad De México, 07738, México
| | - Youngsoo Lee
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Elvira Gonzalez de Mejia
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Champaign, IL, USA
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22
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Ny L, Hernberg M, Nyakas M, Koivunen J, Oddershede L, Yoon M, Wang X, Guyot P, Geisler J. BRAF mutational status as a prognostic marker for survival in malignant melanoma: a systematic review and meta-analysis. Acta Oncol 2020; 59:833-844. [PMID: 32285732 DOI: 10.1080/0284186x.2020.1747636] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background: The analysis of the BRAF mutational status has been established as a standard procedure during diagnosis of advanced malignant melanoma due to the fact that BRAF inhibitors constitute a cornerstone in the treatment of metastatic disease. However, the general impact of BRAF mutational status on survival remains unclear. Our study aimed to assess the underlying prognostic significance of BRAF mutant versus wild type (WT) malignant melanoma on overall survival (OS), disease-free survival (DFS) and progression-free survival (PFS).Material and methods: A systematic literature search in EMBASE, Medline and Cochrane CENTRAL was performed. Studies were included if they reported survival outcomes for BRAF mutant versus WT patients as hazard ratios (HR) or in Kaplan-Meier (KM) curves. Random-effects meta-analysis models were used to pool HRs across the studies.Results: Data from 52 studies, representing 7519 patients, were pooled for analysis of OS. The presence of a BRAF mutation was statistically significantly associated with a reduced OS (HR [95% confidence interval (CI)]: 1.23 [1.09-1.38]), however, with substantial heterogeneity between the studies (I2: 58.0%). Meta-regression and sensitivity analyses showed that age, sex and BRAF mutation testing method did not have a significant effect on the OS HR. BRAF mutant melanoma showed comparable effect on DFS to non-BRAF mutant melanoma in stage I-III melanoma (combined HR: 1.16, 95% CI: 0.92-1.46), and on PFS in stage III-IV (HR: 0.98 (95% CI: 0.68-1.40)).Conclusion: Although there was substantial heterogeneity between the studies, the overall results demonstrated a poorer prognosis and OS in patients harbouring BRAF mutations. Future studies should take this into account when evaluating epidemiological data and treatment effects of new interventions in patients with malignant melanoma.
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Affiliation(s)
- L. Ny
- Department of Oncology, Institute of Clinical Science, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - M. Hernberg
- Comprehensive Cancer Center, Helsinki University Hospital, Helsinki, Finland
| | - M. Nyakas
- Oslo University Hospital, Oslo, Norway
| | - J. Koivunen
- Department of Oncology and Radiotherapy, Oulu University Hospital, MRC Oulu, Oulu, Finland
| | | | - M. Yoon
- Novartis Healthcare A/S, Copenhagen, Denmark
| | - X. Wang
- Commercialization & Outcomes, ICON plc, Stockholm, Sweden
| | - P. Guyot
- Commercialization & Outcomes, ICON plc, Lyon, France
| | - J. Geisler
- Institute of Clinical Medicine, Campus AHUS, University of Oslo, Oslo, Norway
- Department of Oncology, Akershus University Hospital, Lørenskog, Norway
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23
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Kozak K, Kowalik A, Gos A, Wasag B, Lugowska I, Jurkowska M, Krawczynska N, Kosela-Paterczyk H, Switaj T, Teterycz P, Klimczak A, Siedlecki JA, Chlopek M, Kalisz J, Limon J, Rutkowski P. Cell-free DNA BRAF V600E measurements during BRAF inhibitor therapy of metastatic melanoma: long-term analysis. TUMORI JOURNAL 2020; 106:300891619900928. [PMID: 32026754 DOI: 10.1177/0300891619900928] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE We assessed the status of the BRAF V600E mutation in cell-free circulating tumor DNA (cfDNA) isolated from the plasma of patients with metastatic melanoma treated with the BRAF inhibitor vemurafenib, collected at different time points during therapy to evaluate the sensitivity and specificity of quantitative polymerase chain reaction and droplet digital polymerase chain reaction (ddPCR) and the correlation between the level of plasma cfDNA p.V600E and the long-term clinical outcome. METHODS cfDNA in patients with BRAF-mutated melanoma (n = 62) was analyzed at baseline and at 4-8 weeks from the start of vemurafenib therapy. BRAF mutations were assessed using tumor tissue-derived DNA and circulating cfDNA from plasma samples. Quantification of BRAF V600E was performed in cfDNA using ddPCR. RESULTS cfDNA V600E was detected in the plasma of 48/62 (77%) patients at baseline and in 18/62 (29%) patients after 4-8 weeks of treatment. Patients positive for BRAF mutations in cfDNA at baseline had shorter progression-free survival (PFS) and overall survival (OS) compared with patients with undetectable cfDNA BRAF mutations. Undetectable cfDNA p.V600E at baseline and after 4-8 weeks of therapy was associated with the best prognosis. When treated as a continuous variable, the log-transformed concentration of baseline cfDNA p.V600E was significantly associated with both PFS and OS. This effect was retained in the multivariate OS Cox model adjusted for Eastern Cooperative Oncology Group performance status, the presence of brain metastases, patient age, and previous systemic treatment. CONCLUSIONS Monitoring of plasma BRAF p.V600E cfDNA concentrations in patients with metastatic melanoma on targeted therapy may have prognostic value. Undetectable cfDNA p.V600E before and during treatment was associated with a favorable prognosis.
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Affiliation(s)
- Katarzyna Kozak
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Artur Kowalik
- Department of Molecular Diagnostics, Holy Cross Cancer Centre, Kielce, Poland
| | - Aleksandra Gos
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Bartosz Wasag
- Department of Molecular Biology, Medical University of Gdansk, Gdansk, Poland
| | - Iwona Lugowska
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | | | - Natalia Krawczynska
- Department of Molecular Biology, Medical University of Gdansk, Gdansk, Poland
| | - Hanna Kosela-Paterczyk
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Tomasz Switaj
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Paweł Teterycz
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Anna Klimczak
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Janusz A Siedlecki
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
| | - Małgorzata Chlopek
- Department of Molecular Diagnostics, Holy Cross Cancer Centre, Kielce, Poland
| | - Joanna Kalisz
- Department of Molecular Diagnostics, Holy Cross Cancer Centre, Kielce, Poland
| | - Janusz Limon
- Department of Molecular Biology, Medical University of Gdansk, Gdansk, Poland
| | - Piotr Rutkowski
- Department of Soft Tissue/Bone Sarcoma and Melanoma, Maria Sklodowska-Curie Institute Oncology Center, Warsaw, Poland
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24
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Sun J, Kirichenko DA, Chung JL, Carr MJ, Eroglu Z, Khushalani NI, Markowitz J, Messina JL, Sondak VK, Zager JS, Patel SY. Perioperative Outcomes of Melanoma Patients Undergoing Surgery After Receiving Immunotherapy or Targeted Therapy. World J Surg 2019; 44:1283-1293. [DOI: 10.1007/s00268-019-05314-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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25
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Liu W, Chou CF, Liu S, Crossman D, Yusuf N, Wu Y, Chen CY. KSRP modulates melanoma growth and efficacy of vemurafenib. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2019; 1862:759-770. [PMID: 31269460 DOI: 10.1016/j.bbagrm.2019.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 05/30/2019] [Accepted: 06/12/2019] [Indexed: 01/15/2023]
Abstract
The majority of melanomas carry an oncogenic BRAF mutation (BRAFV600E), which results in constitutive kinase activity driving melanoma proliferation. While inhibitors of BRAFV600E (BRAFi) effectively lead to rapid tumor shrinkage, most patients treated with BRAFi develop acquired resistance. Identification of factors as regulators of melanoma growth and as potential sources of resistance is thus crucial for the design of improved therapies to treat advanced melanoma with more durable responses. Here, we show that KH-type splicing regulatory protein (KSRP) is critical for proliferation of melanoma cells without and with acquired resistance to vemurafenib. Silencing KSRP reduces cell proliferation and augments the growth suppressive effects of vemurafenib. We identify killin (KLLN), a p53-regulated DNA replication inhibitor, as a downstream effector of growth inhibition by KSRP silencing and demonstrate that KSRP promotes decay of KLLN mRNA through an RNA-protein interaction. Using heterologous mRNA reporters, we show that a U-rich element within the 3' untranslated region of KLLN is responsible for KSRP-dependent mRNA decay. These findings implicate that KSRP is an important regulator of melanoma cell growth in part through controlling KLLN mRNA stability.
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Affiliation(s)
- Wenwen Liu
- State Key Laboratory of Structured Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - Chu-Fang Chou
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - Shanrun Liu
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - David Crossman
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - Nabiha Yusuf
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America
| | - Yunkun Wu
- Provincial University Key Laboratory of Cellular Stress Response and Metabolic Regulation, College of Life Science, Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou 350119, China.
| | - Ching-Yi Chen
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, United States of America.
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26
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Iafolla MA, Ramsay J, Wismer J, McWhirter E. Cobimetinib- and vemurafenib-induced granulomatous dermatitis and erythema induratum: A case report. SAGE Open Med Case Rep 2019; 7:2050313X19847358. [PMID: 31205706 PMCID: PMC6537058 DOI: 10.1177/2050313x19847358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Metastatic melanoma is an aggressive malignancy. Survival can be increased with
the combination of BRAF and MEK inhibition. BRAF inhibitor-induced cutaneous
toxicities can be attenuated with MEK inhibition. Here, we describe the first
reported case of a patient with metastatic melanoma who developed granulomatous
dermatitis and erythema induratum when treated with combination BRAF
(vemurafenib) and MEK inhibitor (cobimetinib) therapy and discuss the clinical
features and management of dermatologic side-effects secondary to BRAF +/– MEK
inhibition.
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Affiliation(s)
- Marco Aj Iafolla
- Department of Medical Oncology, Juravinski Cancer Centre, McMaster University, Hamilton, ON, Canada
| | - Jennifer Ramsay
- Department of Pathology and Molecular Medicine, Juravinski Hospital, McMaster University, Hamilton, ON, Canada
| | - Judy Wismer
- Department of Dermatology, McMaster University, Hamilton, ON, Canada
| | - Elaine McWhirter
- Department of Medical Oncology, Juravinski Cancer Centre, McMaster University, Hamilton, ON, Canada
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28
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Abstract
Skin cancer represents a broad classification of malignancies, which can be further refined by histology, including basal cell carcinoma, squamous cell carcinoma and melanoma. As these three cancers are distinct entities, we review each one separately, with a focus on their epidemiology, etiology including relevant genomic data, and the current evidence-based recommendations for adjuvant and neoadjuvant therapy. We also discuss future directions and opportunities for continued therapeutic advances.
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Affiliation(s)
- Assuntina G Sacco
- Division of Hematology-Oncology, University of California San Diego, Moores Cancer Center, 3855 Health Sciences Drive, La Jolla, CA 92093-0658, USA.
| | - Gregory A Daniels
- Division of Hematology-Oncology, University of California San Diego, Moores Cancer Center, 3855 Health Sciences Drive, La Jolla, CA 92093-0658, USA
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29
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Rapid BRAF mutation tests in patients with advanced melanoma: comparison of immunohistochemistry, Droplet Digital PCR, and the Idylla Mutation Platform. Melanoma Res 2019; 28:96-104. [PMID: 29232304 PMCID: PMC5844592 DOI: 10.1097/cmr.0000000000000421] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Supplemental Digital Content is available in the text. BRAF mutational testing has become a common practice in the diagnostic process of patients with advanced melanoma. Although time-consuming, DNA sequencing techniques are the current gold standard for mutational testing. However, in certain clinical situations, a rapid test result is required. In this study, the performance of three rapid BRAF mutation tests was compared. Thirty-nine formalin-fixed paraffin-embedded melanoma tissue samples collected between 2007 and 2014 at a single center were included. These samples were analyzed by immunohistochemistry using the anti-BRAF-V600E (VE1) mouse monocolonal antibody (BRAF-VE1 IHC), a V600E-specific Droplet Digital PCR Test, and the Idylla BRAF- Mutation Test (Idylla). Results were compared with the results of conventional BRAF mutation testing, performed using high-resolution melting analysis followed by Sanger sequencing. Next-generation sequencing was performed on samples with discordant results. The Idylla test and Droplet Digital PCR Test correctly identified all mutated and wild-type samples. BRAF-VE1 IHC showed one discordant result. The Idylla test could identify BRAF-V600 mutations other than BRAF-V600E and was the fastest and least laborious test. The Idylla Mutation Test is the most suitable test for rapid BRAF testing in clinical situations on the basis of the broad coverage of treatment-responsive mutations and the fast procedure without the need to perform a DNA isolation step.
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30
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Cvetanova B, Shen YC, Shyur LF. Cumingianoside A, a Phyto-Triterpenoid Saponin Inhibits Acquired BRAF Inhibitor Resistant Melanoma Growth via Programmed Cell Death. Front Pharmacol 2019; 10:30. [PMID: 30745871 PMCID: PMC6360185 DOI: 10.3389/fphar.2019.00030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 01/11/2019] [Indexed: 01/01/2023] Open
Abstract
Mutated proto-oncogene BRAF is a bona fide therapeutic target for melanomas. Regrettably, melanoma acquires resistance to BRAF inhibitors, e.g., vemurafenib (PLX4032) casting doubt on this promising melanoma targeted therapy. In this study, we explored the bioactivity of triterpenoid saponin cumingianoside A (CUMA), isolated from leaves and twigs of Dysoxylum cumingianum against PLX4032-resistant BRAFV 600E mutant melanoma A375-R in vitro and in vivo. Our data show that CUMA treatment inhibited A375-R melanoma cell proliferation in a time- and dose-dependent manner. CUMA also suppressed the activity of CDK1/cyclin B1 complex and led to G2/M-phase arrest of A375-R cells. Furthermore, CUMA treatment resulted in induction of apoptosis as shown by the increased activation of caspase 3 and caspase 7, and the proteolytic cleavage of poly(ADP-ribose) polymerase (PARP). We also observed that CUMA induced autophagy-like activity in A375-R cells, as shown by the increased expression of autophagy-related genes and increased formation of autophagosomes. Moreover, we found that CUMA treatment induced ER stress response and co-treatment with an ER stress inhibitor (4-PBA) could attenuate apoptosis induced by CUMA. Importantly, orally administered CUMA as a single agent or in combination with PLX4032 exhibited strong tumor growth inhibition in a PLX4032-resistant A375-R xenograft mouse model, and with little toxicity. This is the first report to explore the anti-tumor activity of CUMA in vitro and in vivo mechanistically, and our results imply that this triterpenoid saponin may be suitable for development into an anti-melanoma agent.
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Affiliation(s)
- Biljana Cvetanova
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan.,Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Ya-Ching Shen
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Lie-Fen Shyur
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan.,Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan.,Ph.D. Program in Translational Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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31
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Tyrrell H, Payne M. Combatting mucosal melanoma: recent advances and future perspectives. Melanoma Manag 2018; 5:MMT11. [PMID: 30459941 PMCID: PMC6240847 DOI: 10.2217/mmt-2018-0003] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 08/03/2018] [Indexed: 12/20/2022] Open
Abstract
Mucosal melanomas are a rare subtype of melanoma and are associated with a particularly poor prognosis. Due to the rarity of the diagnosis, and the pace with which the management of cutaneous melanoma has evolved over recent years, there is little good evidence to guide management and evidence-based clinical guidelines are still in development in the UK. In this review we provide an overview of the management of mucosal melanoma, highlighting the critical differences between cutaneous and mucosal melanomas, before examining recent advances in the systemic treatment of this disease and likely future directions.
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Affiliation(s)
- Helen Tyrrell
- Oxford Cancer Centre, Oxford University Hospitals NHS Foundation Trust Oxford, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - Miranda Payne
- Oxford Cancer Centre, Oxford University Hospitals NHS Foundation Trust Oxford, Oxford, United Kingdom of Great Britain & Northern Ireland
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Autophagic cell death associated to Sorafenib in renal cell carcinoma is mediated through Akt inhibition in an ERK1/2 independent fashion. PLoS One 2018; 13:e0200878. [PMID: 30048489 PMCID: PMC6062059 DOI: 10.1371/journal.pone.0200878] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 06/15/2018] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES To fully clarify the role of Mitogen Activated Protein Kinase in the therapeutic response to Sorafenib in Renal Cell Carcinoma as well as the cell death mechanism associated to this kinase inhibitor, we have evaluated the implication of several Mitogen Activated Protein Kinases in Renal Cell Carcinoma-derived cell lines. MATERIALS AND METHODS An experimental model of Renal Cell Carcinoma-derived cell lines (ACHN and 786-O cells) was evaluated in terms of viability by MTT assay, induction of apoptosis by caspase 3/7 activity, autophagy induction by LC3 lipidation, and p62 degradation and kinase activity using phospho-targeted antibodies. Knock down of ATG5 and ERK5 was performed using lentiviral vector coding specific shRNA. RESULTS Our data discard Extracellular Regulated Kinase 1/2 and 5 as well as p38 Mitogen Activated Protein Kinase pathways as mediators of Sorafenib toxic effect but instead indicate that the inhibitory effect is exerted through the PI3K/Akt signalling pathway. Furthermore, we demonstrate that inhibition of Akt mediates cell death associated to Sorafenib without caspase activation, and this is consistent with the induction of autophagy, as indicated by the use of pharmacological and genetic approaches. CONCLUSION The present report demonstrates that Sorafenib exerts its toxic effect through the induction of autophagy in an Akt-dependent fashion without the implication of Mitogen Activated Protein Kinase. Therefore, our data discard the use of inhibitors of the RAF-MEK-ERK1/2 signalling pathway in RCC and support the use of pro-autophagic compounds, opening new therapeutic opportunities for Renal Cell Carcinoma.
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33
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He H, Nan X, Liu S, Zhang L, Yang Z, Wu Y, Zhang L. Anticancer effects of combinational treatment with BRAF V600E siRNA and PI3K pathway inhibitors in melanoma cell lines harboring BRAF V600E. Oncol Lett 2018; 16:632-642. [PMID: 29928450 DOI: 10.3892/ol.2018.8614] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 05/05/2017] [Indexed: 12/15/2022] Open
Abstract
In the present study, the anti-tumor effects of combination treatment with an siRNA targeting B-Raf proto-oncogene serine/threonine kinase (BRAF)V600E and phosphoinositide 3-kinase (PI3K) signaling pathway inhibitors was investigated in melanoma cell lines harboring BRAFV600E. Human melanoma A375 and WM115 cells were treated with siRNA targeting to BRAF or BRAFV600E, combined with treatment with PI3K signaling pathway inhibitors. CCK-8 and EdU proliferation assays were performed to assess cell viability and proliferation, respectively, following treatment. In addition, flow cytometry analysis was performed to determine cell cycle distribution, and western blot analysis was performed to analyze the activity of the extracellular signal-regulated kinase (ERK) and PI3Ksignaling pathways following treatment. Targeting BRAFV600E using small interfering (si)RNA significantly decreased cell viability and DNA replication in tumor cell lines that harbor oncogenic BRAFV600E. Inhibition of BRAFV600E by siRNA combined with treatment with PI3K or mammalian target of rapamycin signaling pathway inhibitors significantly decreased cell viability and proliferation compared with siRNA or inhibitor treatment alone. Concomitant BRAFV600E and PI3K inhibition led to G1/S phase arrest in melanoma cells. However, melanoma cells in which oncogenic BRAFV600E is not highly expressed (WM115 cells) were not sensitive to BRAFV600E targeted therapy. The PI3K signaling pathway inhibitors were more effective in this cell line. The results from the present study provide an insight into the potential effectiveness of combination therapy and personalized cancer treatments.
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Affiliation(s)
- Hongyan He
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Xiyan Nan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Shuang Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Zhenjun Yang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Yun Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
| | - Lihe Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, P.R. China
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34
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Callaghan GM, Kelleher FC, Ridgway PF, Crowther S, Alakkari A, Ryan BM. A Case of Primary Gastric Melanoma Exhibiting a Rare BRAF V600R Mutation. Eur J Case Rep Intern Med 2018; 5:000749. [PMID: 30756014 PMCID: PMC6346958 DOI: 10.12890/2018_000749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 11/20/2017] [Indexed: 01/27/2023] Open
Abstract
Introduction Malignant melanoma of the gastrointestinal tract is usually a metastasis from a cutaneous source. Primary gastric melanoma is an extremely rare clinical entity, with few reported cases worldwide. It is often advanced at time of diagnosis and is associated with a dismal outcome. Background A 76 year old gentleman presenteded with a one month history of fatigue and exertional dyspnoea. Laboratory investigations indicated an anaemia, with a haemoglobin level of 11.0g/dl. Subsequent gastroscopy visualised a large, atypical, crater-like ulcerated lesion distal to the cardia in the proximal stomach. Provisional histology was suggestive of a poorly differentiated adenocarcinoma but subsequent cyto-morphology and immunophenotyping were consistent with melanoma, with positive S100 protein, HMB45 and Melan A. Further molecular genetic testing revealed a V600R mutation in the BRAF gene, which is the first primary gastric melanoma with this mutation to be reported in the literature. Given the rarity of the findings, an extensive secondary work-up was undertaken, which concluded the diagnosis primary gastric melanoma. Discussion Primary gastric melanoma is a rare disease that can present similarly to other upper gastrointesinal lesions, with weight loss, abdominal pain, malena, and anaemia. Given its rarity, the pathogenesis is poorly understood. Lesions are often endoscopically atypical. Important points to note would include the absence of a primary lesion, as supported by a full skin examination and PET-CT findings, which can help to delineate the limitation to the stomach, thus helping to inform subsequent management. LEARNING POINTS
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Affiliation(s)
| | | | - Paul F Ridgway
- Department of Surgery, Tallaght Hospital, Dublin, Ireland.,Department of Surgery, Trinity College Dublin, Ireland
| | - Stephen Crowther
- Department of Cellular Pathology, Tallaght Hospital, Dublin, Ireland
| | - Alaa Alakkari
- Department of Gastroenterology, Tallaght Hospital, Dublin, Ireland
| | - Barbara M Ryan
- Department of Gastroenterology, Tallaght Hospital, Dublin, Ireland.,Department of Clinical Medicine, Trinity College Dublin, Ireland
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35
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Brugnara S, Sicher M, Bonandini EM, Donner D, Chierichetti F, Barbareschi M, Girardelli CR, Caffo O. Treatment with combined dabrafenib and trametinib in BRAFV600E-mutated metastatic malignant melanoma: a case of long-term complete response after treatment cessation. Drugs Context 2018; 7:212515. [PMID: 29483930 PMCID: PMC5819728 DOI: 10.7573/dic.212515] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/25/2018] [Accepted: 01/26/2018] [Indexed: 12/19/2022] Open
Abstract
Here, we report the case of a patient, diagnosed with BRAFV600E-mutated metastatic malignant melanoma M1a, who achieved a complete metabolic response after 7 months of treatment with the combination of dabrafenib and trametinib. After 31 months, the treatment was interrupted for patient’s decision. To date October 2017, 18 months after the interruption of the treatment with the combination of dabrafenib and trametinib, follow-up Positron Emission Tomography (PET) scans are still documenting complete metabolic response.
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Affiliation(s)
| | | | | | | | | | | | | | - Orazio Caffo
- Oncology Unit, S. Chiara Hospital, Trento, Italy
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36
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Han X, Han Y, Zheng Y, Sun Q, Ma T, Dai L, Zhang J, Xu L. Use of phosphodiesterase type 5 inhibitors and risk of melanoma: a meta-analysis of observational studies. Onco Targets Ther 2018; 11:711-720. [PMID: 29440918 PMCID: PMC5804137 DOI: 10.2147/ott.s142637] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Phosphodiesterase type 5 inhibitor (PE5i) administration may stimulate the proliferation and survival of melanocytes. However, discrepancies remain regarding the association between PDE5i use and melanoma risk in observational studies in humans. Aim To evaluate the association between PDE5i use and melanoma in a meta-analysis. Materials and methods Studies were identified by searching the PubMed and Embase databases. A random-effects model was applied to synthesize the data. A stratified study was performed to evaluate the influence of study characteristics on outcomes. Results Four prospective cohort studies and three case–control studies with 1,534,615 male participants and 16,053 melanoma cases were incorporated. Patients who received a PDE5i had a significantly increased risk for melanoma (adjusted risk ratio [RR] =1.12, 95% CI =1.03–1.33, P=0.008) with moderate heterogeneity (I2=54%). Cohort studies (adjusted RR =1.22, 95% CI =1.02–1.46, P=0.03) largely contributed to this result rather than case–control studies. Subsequent stratified analyses revealed that sildenafil was associated with an increased risk of melanoma (adjusted RR =1.26, 95% CI =1.07–1.50, P=0.007), but tadalafil and vardenafil were not. Also, PDE5i use was associated with a significantly increased risk of in situ melanoma (adjusted RR =1.31, 95% CI =1.01–1.69, P=0.04), but not of localized or nonlocalized melanoma. Conclusion PDE5i use may be associated with a significantly increased risk for melanoma in men. However, further research is needed to determine whether the association is causative.
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Affiliation(s)
- Xinming Han
- Plastic Surgery Department, Beijing Tongren Hospital, Capital Medical University, Beijing
| | - Yan Han
- Plastic and Reconstructive Surgery Department, Chinese PLA General Hospital, Beijing, China
| | - Yongsheng Zheng
- Plastic Surgery Department, Beijing Tongren Hospital, Capital Medical University, Beijing
| | - Qiang Sun
- Plastic Surgery Department, Beijing Tongren Hospital, Capital Medical University, Beijing
| | - Tao Ma
- Plastic Surgery Department, Beijing Tongren Hospital, Capital Medical University, Beijing
| | - Li Dai
- Plastic Surgery Department, Beijing Tongren Hospital, Capital Medical University, Beijing
| | - Junyi Zhang
- Plastic Surgery Department, Beijing Tongren Hospital, Capital Medical University, Beijing
| | - Lianji Xu
- Plastic Surgery Department, Beijing Tongren Hospital, Capital Medical University, Beijing
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37
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Uncommon BRAF Mutations Associated with Durable Response to Immunotherapy in Patients with Metastatic Melanoma. Case Rep Oncol Med 2017; 2017:8241624. [PMID: 29181212 PMCID: PMC5664253 DOI: 10.1155/2017/8241624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 08/23/2017] [Indexed: 12/13/2022] Open
Abstract
Melanoma is a disease process which has been increasing in incidence over the past three decades and metastatic melanoma carries a poor prognosis. Through genetic studies of this disease, it has been determined that the BRAF V600 mutation plays a major role in the pathophysiology of the disease and this has led to the utilization of targeted therapy (BRAF and MEK inhibitors) in its treatment. Other BRAF mutations (non-V600 mutations) are rare in melanoma and targeted therapy is not indicated for patients with these mutations due to reduced response rates. An emerging option for metastatic melanoma with uncommon BRAF mutations is immunotherapy using checkpoint inhibitors such as PD-1 inhibitors or CTLA-4 inhibitors. Currently, it is unknown how patients with BRAF non-V600 mutations respond to immunotherapy. This report will examine the effect of immunotherapy on two distinct metastatic melanoma patients, each with uncommon BRAF mutations, occurring outside the V600 locus (E586K and G469E). These patients were noted to have a durable, complete response when treated with immunotherapy and continue to exhibit a response 9 and 15 months after discontinuing therapy. Further research and clinical trials are needed to study patients with uncommon BRAF mutations and the potential therapeutic benefit of immunotherapy.
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38
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Abdelazeem AH, El-Saadi MT, Said EG, Youssif BGM, Omar HA, El-Moghazy SM. Novel diphenylthiazole derivatives with multi-target mechanism: Synthesis, docking study, anticancer and anti-inflammatory activities. Bioorg Chem 2017; 75:127-138. [PMID: 28938224 DOI: 10.1016/j.bioorg.2017.09.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 09/07/2017] [Accepted: 09/11/2017] [Indexed: 12/22/2022]
Abstract
Over the last few decades, a growing body of studies addressed the anticancer activity of NSAIDs, particularly selective COX-2 inhibitors. However, their exact molecular mechanism is still unclear and is not fully investigated. In this regard, a novel series of compounds bearing a COXs privilege scaffold, diphenyl thiazole, was synthesized and evaluated for their anticancer activity against a panel of cancer cell lines. The most active compounds 10b, 14a,b, 16a, 17a,b and 18b were evaluated in vitro for COX-1/COX-2 inhibitory activity. These compounds were suggested to exert their anticancer activity through a multi-target mechanism based on their structural features. Thus, compounds 10b and 17b with the least IC50 values in MTT assay were tested against three known anticancer targets; EGFR, BRAF and tubulin. Compounds 10b and 17b showed remarkable activity against EGFR with IC50 values of 0.4 and 0.2μM, respectively and good activity against BRAF with IC50 values of 1.3 and 1.7μM, respectively. In contrast, they showed weak activity in tubulin polymerization assay. The in vivo anti-inflammatory potential was assessed and interestingly, compound 17b was the most potent compound. Together, this study offers some important insights into the correlation between COXs inhibition and cancer treatment. Additionally, the results demonstrated the promising activity of these compounds with a multi-target mechanism as good candidates for further development into potential anticancer agents.
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Affiliation(s)
- Ahmed H Abdelazeem
- Department of Medicinal Chemistry, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt.
| | - Mohammed T El-Saadi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Eman G Said
- Department of Medicinal Chemistry, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Bahaa G M Youssif
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt; Department of Pharmaceutical Chemistry, College of Pharmacy, Aljouf University, Aljouf, Sakaka 2014, Saudi Arabia
| | - Hany A Omar
- Sharjah Institute for Medical Research and College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates; Department of Pharmacology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Samir M El-Moghazy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt.
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39
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Winkler J, Buder-Bakhaya K, Ellert E, Herpel E, Martens U, Enk A, Hassel J. Acute heart failure as a result of granulomatous myocarditis: case report on a patient with metastatic melanoma treated with dabrafenib and trametinib. J Eur Acad Dermatol Venereol 2017; 32:e31-e32. [DOI: 10.1111/jdv.14467] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- J.K. Winkler
- Department of Dermatology and National Center for Tumor Diseases (NCT); University Hospital Heidelberg; Heidelberg Germany
| | - K. Buder-Bakhaya
- Department of Dermatology and National Center for Tumor Diseases (NCT); University Hospital Heidelberg; Heidelberg Germany
| | - E. Ellert
- Department of Pathology; University Hospital Heidelberg; Heidelberg Germany
| | - E. Herpel
- Department of Pathology; University Hospital Heidelberg; Heidelberg Germany
| | - U.M. Martens
- Department of Internal Medicine (Hematology/Oncology); SLK-Klinikum Heilbronn; Heilbronn Germany
| | - A. Enk
- Department of Dermatology and National Center for Tumor Diseases (NCT); University Hospital Heidelberg; Heidelberg Germany
| | - J.C. Hassel
- Department of Dermatology and National Center for Tumor Diseases (NCT); University Hospital Heidelberg; Heidelberg Germany
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40
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Qin HL, Leng J, Youssif BGM, Amjad MW, Raja MAG, Hussain MA, Hussain Z, Kazmi SN, Bukhari SNA. Synthesis and mechanistic studies of curcumin analog-based oximes as potential anticancer agents. Chem Biol Drug Des 2017; 90:443-449. [DOI: 10.1111/cbdd.12964] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 01/22/2017] [Accepted: 01/28/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Hua-Li Qin
- Department of Pharmaceutical Engineering; School of Chemistry; Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan China
| | - Jing Leng
- Department of Pharmaceutical Engineering; School of Chemistry; Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan China
| | - Bahaa G. M. Youssif
- Department of Pharmaceutical Organic Chemistry; Faculty of Pharmacy; Assiut University; Assiut Egypt
- Department of Pharmaceutical Chemistry; College of Pharmacy; Aljouf University; Sakaka Saudi Arabia
| | | | | | | | - Zahid Hussain
- Faculty of Pharmacy; Universiti Teknologi MARA; Puncak Alam Selangor Malaysia
| | - Syeda Naveed Kazmi
- Department of Mathematics; Capital University of Science and Technology (CUST); Islamabad Pakistan
| | - Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Engineering; School of Chemistry; Chemical Engineering and Life Science; Wuhan University of Technology; Wuhan China
- Department of Pharmaceutical Chemistry; College of Pharmacy; Aljouf University; Sakaka Saudi Arabia
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41
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Barbato S, Solaini G, Fabbri M. MicroRNAs in Oncogenesis and Tumor Suppression. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 333:229-268. [PMID: 28729026 DOI: 10.1016/bs.ircmb.2017.05.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
MicroRNAs (MiRNAs) have emerged in the last 15 years as central players in the biology of cancer. Increasing lines of evidence have supported their regulatory role in the expression of both oncogenes and tumor-suppressor genes, progressively clarifying which genes are modulated by specific MiRNAs dysregulated in cancer. Intriguingly, a "target-specific" understanding of MiRNA function in oncology has been replaced by a more "pathway-specific" vision of their involvement in cancer biology. This work provides a state-of-the-art knowledge of the role of MiRNAs in the most frequently altered signaling pathways in cancer cells and provides an updated overview on some of the most relevant findings trying to decode the complex molecular mechanisms of cancer.
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Affiliation(s)
- Simona Barbato
- Laboratory of Biochemistry and Mitochondrial Pathophysiology, University of Bologna, Bologna, Italy
| | - Giancarlo Solaini
- Laboratory of Biochemistry and Mitochondrial Pathophysiology, University of Bologna, Bologna, Italy
| | - Muller Fabbri
- Children's Center for Cancer and Blood Diseases and The Saban Research Institute, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Children's Hospital Los Angeles, Los Angeles, CA, United States.
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42
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Abstract
Targeted therapies use an understanding of the pathophysiology of a disease in an individual patient. Although targeted therapy for systemic sclerosis (SSc, scleroderma) has not yet reached the level of patient-specific treatments, recent developments in the understanding of the global pathophysiology of the disease have led to new treatments based on the cells and pathways that have been shown to be involved in the disease pathogenesis. The presence of a B cell signature in skin biopsies has led to the trial of rituximab, an anti-CD20 antibody, in SSc. The well-known properties of transforming growth factor (TGF)-β in promoting collagen synthesis and secretion has led to a small trial of fresolimumab, a human IgG4 monoclonal antibody capable of neutralizing TGF-β. Evidence supporting important roles for interleukin-6 in the pathogenesis of SSc have led to a large trial of tocilizumab in SSc. Soluble guanylate cyclase (sGC) is an enzyme that catalyzes the production of cyclic guanosine monophosphate (cGMP) upon binding of nitric oxide (NO) to the sGC molecule. Processes such as cell growth and proliferation are regulated by cGMP. Evidence that sGC may play a role in SSc has led to a trial of riociguat, a molecule that sensitizes sGC to endogenous NO. Tyrosine kinases (TKs) are involved in a wide variety of physiologic and pathological processes including vascular remodeling and fibrogenesis such as occurs in SSc. This has led to a trial of nintedanib, a next-generation tyrosine-kinase (TK) inhibitor which targets multiple TKs, in SSc.
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Affiliation(s)
- Murray Baron
- Chief Division of Rheumatology, Jewish General Hospital, Montreal, Quebec, Canada; and Professor of Medicine, McGill University, Montreal, Quebec, Canada
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43
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Sarrabayrouse G, Pich C, Teiti I, Tilkin-Mariame AF. Regulatory properties of statins and rho gtpases prenylation inhibitiors to stimulate melanoma immunogenicity and promote anti-melanoma immune response. Int J Cancer 2016; 140:747-755. [PMID: 27616679 DOI: 10.1002/ijc.30422] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 08/17/2016] [Accepted: 09/05/2016] [Indexed: 01/13/2023]
Abstract
Melanoma is a highly lethal cutaneous tumor, killing affected patients through development of multiple poorly immunogenic metastases. Suboptimal activation of immune system by melanoma cells is often due to molecular modifications occurring during tumor progression that prevent efficient recognition of melanoma cells by immune effectors. Statins are HMG-CoA reductase inhibitors, which block the mevalonate synthesis pathway, used by millions of people as hypocholesterolemic agents in cardiovascular and cerebrovascular diseases. They are also known to inhibit Rho GTPase activation and Rho dependent signaling pathways. Rho GTPases are regarded as molecular switches that regulate a wide spectrum of cellular functions and their dysfunction has been characterized in various oncogenic process notably in melanoma progression. Moreover, these molecules can modulate the immune response. Since 10 years we have demonstrated that Statins and other Rho GTPases inhibitors are critical regulators of molecules involved in adaptive and innate anti-melanoma immune response. In this review we summarize our major observations demonstrating that these pharmacological agents stimulate melanoma immunogenicity and suggest a potential use of these molecules to promote anti-melanoma immune response.
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Affiliation(s)
- Guillaume Sarrabayrouse
- Digestive System Research Unit, Vall d'Hebron Research Institute, Passeig Vall d'Hebron 119-129, Barcelona, Spain
| | - Christine Pich
- Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
| | - Iotefa Teiti
- INSERM UMR 1037, CRCT, Université de Toulouse, UPS, Toulouse, France.,Université de Toulouse, UPS, Toulouse, France
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44
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Wang J, Morrissette J, Lieberman DB, Timlin C, Schuster SJ, Mato AR. Utilization of next generation sequencing identifies potentially actionable mutations in chronic lymphocytic leukaemia. Br J Haematol 2016; 180:299-301. [PMID: 27714764 DOI: 10.1111/bjh.14315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Jie Wang
- Center for CLL, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - Jennifer Morrissette
- Center for Personalized Diagnostics, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - David B Lieberman
- Center for Personalized Diagnostics, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - Colleen Timlin
- Center for CLL, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - Stephen J Schuster
- Center for CLL, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - Anthony R Mato
- Center for CLL, Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
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45
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de Langen AJ, Smit EF. Therapeutic approach to treating patients with BRAF-mutant lung cancer: latest evidence and clinical implications. Ther Adv Med Oncol 2016; 9:46-58. [PMID: 28203297 DOI: 10.1177/1758834016670555] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Lung adenocarcinoma is known for its high rate of somatic mutations and genomic rearrangements. The identification of epidermal growth factor receptor (EGFR) mutations and anaplastic lymphoma kinase (ALK) rearrangements that sensitize tumors to specific drugs has changed the therapeutic approach and prognosis in these molecularly-defined subgroups. Several other key genetic alterations have been identified, of which BRAF mutations are found in 4% of non-small cell lung cancer (NSCLC) cases. Targeted drugs against BRAF and downstream MEK were recently approved for the treatment of BRAF-positive melanoma and have entered clinical evaluation in NSCLC. In this review we discuss the latest evidence on the treatment of BRAF-mutated NSCLC, including tumor biology, targeted treatment with BRAF and MEK inhibitors, therapeutic resistance and strategies to overcome resistance.
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Affiliation(s)
- Adrianus J de Langen
- Department of Pulmonary Diseases, VU University Medical Center, De Boelelaan 1117, 1007 MB Amsterdam, The Netherlands
| | - Egbert F Smit
- Department of Pulmonary Diseases, VU University Medical Center, and Department of Thoracic Oncology, Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
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46
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Sammons S, Brady D, Vahdat L, Salama AK. Copper suppression as cancer therapy: the rationale for copper chelating agents in BRAFV600 mutated melanoma. Melanoma Manag 2016; 3:207-216. [PMID: 30190890 DOI: 10.2217/mmt-2015-0005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 05/13/2016] [Indexed: 01/21/2023] Open
Abstract
The successful targeting of oncogenic BRAFV600 represents one of the landmark breakthroughs in therapy for advanced melanoma. While the initial clinical benefit can be dramatic, resistance is common due to a number of mechanisms, including MAPK pathway reactivation. Recent data have revealed a novel role for copper (Cu) in BRAF signaling with potential clinical implications. The history, preclinical data and efficacy of Cu chelating agents in cancer, specifically tetrathiomolybdate, will be reviewed with a focus on the rationale for targeting the MAPK cascade in melanoma through novel combination strategies.
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Affiliation(s)
- Sarah Sammons
- Hematology/Oncology, Department of Internal Medicine, Duke University Medical Center, 203 Research Drive, MSRB1, Room 397, Box 2639, Durham, NC 27710, USA.,Hematology/Oncology, Department of Internal Medicine, Duke University Medical Center, 203 Research Drive, MSRB1, Room 397, Box 2639, Durham, NC 27710, USA
| | - Donita Brady
- Department of Cancer Biology & Abramson Family Cancer Research Institute, Perelman School of Medicine at the University of Pennsylvania, 421 Curie Boulevard, 612 BRBII/III, Philadelphia, PA 19104, USA.,Department of Cancer Biology & Abramson Family Cancer Research Institute, Perelman School of Medicine at the University of Pennsylvania, 421 Curie Boulevard, 612 BRBII/III, Philadelphia, PA 19104, USA
| | - Linda Vahdat
- Division of Hematology & Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA.,Division of Hematology & Oncology, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - April Ks Salama
- Melanoma Program, Division of Medical Oncology, Department of Internal Medicine, Duke University Medical Center, 25176 Morris Bldg, DUMC 3198, Durham, NC 27710, USA.,Melanoma Program, Division of Medical Oncology, Department of Internal Medicine, Duke University Medical Center, 25176 Morris Bldg, DUMC 3198, Durham, NC 27710, USA
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47
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Tsao SCH, Vaidyanathan R, Dey S, Carrascosa LG, Christophi C, Cebon J, Shiddiky MJA, Behren A, Trau M. Capture and On-chip analysis of Melanoma Cells Using Tunable Surface Shear forces. Sci Rep 2016; 6:19709. [PMID: 26815318 PMCID: PMC4728558 DOI: 10.1038/srep19709] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 12/11/2015] [Indexed: 12/16/2022] Open
Abstract
With new systemic therapies becoming available for metastatic melanoma such as BRAF and PD-1 inhibitors, there is an increasing demand for methods to assist with treatment selection and response monitoring. Quantification and characterisation of circulating melanoma cells (CMCs) has been regarded as an excellent non-invasive candidate but a sensitive and efficient tool to do these is lacking. Herein we demonstrate a microfluidic approach for melanoma cell capture and subsequent on-chip evaluation of BRAF mutation status. Our approach utilizes a recently discovered alternating current electrohydrodynamic (AC-EHD)-induced surface shear forces, referred to as nanoshearing. A key feature of nanoshearing is the ability to agitate fluid to encourage contact with surface-bound antibody for the cell capture whilst removing nonspecific cells from the surface. By adjusting the AC-EHD force to match the binding affinity of antibodies against the melanoma-associated chondroitin sulphate proteoglycan (MCSP), a commonly expressed melanoma antigen, this platform achieved an average recovery of 84.7% from biological samples. Subsequent staining with anti-BRAF(V600E) specific antibody enabled on-chip evaluation of BRAF(V600E) mutation status in melanoma cells. We believe that the ability of nanoshearing-based capture to enumerate melanoma cells and subsequent on-chip characterisation has the potential as a rapid screening tool while making treatment decisions.
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Affiliation(s)
- Simon Chang-Hao Tsao
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, 3084, Australia
- Department of Surgery – Austin Health, University of Melbourne, Heidelberg, Victoria, 3084, Australia
- Ludwig Institute for Cancer Research – Austin Health, Heidelberg, Victoria, 3084, Australia
| | - Ramanathan Vaidyanathan
- Centre for Personalised NanoMedicine, Australian Institute for Bioengineering and Nanotechnology, University of Queensland
| | - Shuvashis Dey
- Centre for Personalised NanoMedicine, Australian Institute for Bioengineering and Nanotechnology, University of Queensland
| | - Laura G. Carrascosa
- Centre for Personalised NanoMedicine, Australian Institute for Bioengineering and Nanotechnology, University of Queensland
| | - Christopher Christophi
- Department of Surgery – Austin Health, University of Melbourne, Heidelberg, Victoria, 3084, Australia
| | - Jonathan Cebon
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, 3084, Australia
- School of Cancer Medicine- La Trobe University, Melbourne, Victoria, 3086, Australia
- Ludwig Institute for Cancer Research – Austin Health, Heidelberg, Victoria, 3084, Australia
| | - Muhammad J. A. Shiddiky
- Centre for Personalised NanoMedicine, Australian Institute for Bioengineering and Nanotechnology, University of Queensland
| | - Andreas Behren
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, 3084, Australia
- School of Cancer Medicine- La Trobe University, Melbourne, Victoria, 3086, Australia
- Ludwig Institute for Cancer Research – Austin Health, Heidelberg, Victoria, 3084, Australia
| | - Matt Trau
- Centre for Personalised NanoMedicine, Australian Institute for Bioengineering and Nanotechnology, University of Queensland
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland, 4072, Australia
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48
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Maik-Rachline G, Seger R. The ERK cascade inhibitors: Towards overcoming resistance. Drug Resist Updat 2016; 25:1-12. [PMID: 27155372 DOI: 10.1016/j.drup.2015.12.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/22/2015] [Accepted: 12/25/2015] [Indexed: 12/24/2022]
Abstract
The RAS-ERK pathway plays a major regulatory role in various cellular processes. This pathway is hyperactivated and takes an active part in the malignant transformation of more than 85% of cancers. The hyperactivation is mainly due to oncogenic activating mutations in the pathway's components RAS, RAF and MEK, but also due to indirect mechanisms in cells transformed by other oncogenes. Various inhibitors targeting the different tiers of the cascade have been successfully developed and clinically approved, while some are still undergoing preclinical and clinical evaluation. Treatments with the clinically approved RAF and MEK inhibitors have substantially improved the clinical outcome of metastatic mutated-BRAF melanoma. However, the rapid emergence of drug resistance of initially responsive cancers and limited efficacy towards other cancers has led to only marginal patient benefit. Deciphering the molecular mechanisms underlying intrinsic or acquired resistance is a necessity in order to enhance the treatment efficacy of ERK-addicted cancers. Therefore, many studies in the past 5 years embarked on this campaign, revealing several resistance mechanisms. These include, expression of drug-resistant RAF isoforms, molecular or genetic alterations of active downstream components, overexpression of upstream components of the cascade that can reactivate ERK and other survival-related pathways. The understanding of these molecular resistance mechanisms led to further development of drugs that can overcome drug resistance, including our own effort aiming to prevent the nuclear translocation of ERK without affecting its activation. In this review we will focus on the mechanisms underlying drug resistance and efforts to develop activity-independent, more efficacious, antitumor drugs.
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Affiliation(s)
- Galia Maik-Rachline
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 7610001, Israel.
| | - Rony Seger
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot 7610001, Israel
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Martin-Liberal J, Larkin J. Vemurafenib for the treatment of BRAF mutant metastatic melanoma. Future Oncol 2015; 11:579-89. [PMID: 25686114 DOI: 10.2217/fon.14.252] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Vemurafenib was the first selective BRAF inhibitor licensed in cancer. It is indicated for the treatment of patients affected by advanced melanoma with BRAF V600 mutation. It has shown successful results in terms of efficacy together with a favorable toxicity profile. Other compounds such as the BRAF inhibitor dabrafenib and the immunotherapeutic agent ipilimumab are also approved in the same group of patients. This article reviews the chemistry, pharmacokinetics, pharmacodynamics and clinical development of vemurafenib. Moreover, its efficacy and toxicity are compared with dabrafenib and ipilimumab. A number of trials with vemurafenib alone or in combination with other drugs are also analyzed. These trials will determine the role of vemurafenib in the treatment of BRAF mutant melanoma in forthcoming years.
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50
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Current position of TNF-α in melanomagenesis. Tumour Biol 2015; 36:6589-602. [DOI: 10.1007/s13277-015-3639-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 06/03/2015] [Indexed: 12/19/2022] Open
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