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Fan L, Zhong Z, Lin Y, Li J. Non-coding RNAs as potential biomarkers in osteosarcoma. Front Genet 2022; 13:1028477. [PMID: 36338952 PMCID: PMC9627036 DOI: 10.3389/fgene.2022.1028477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 10/07/2022] [Indexed: 11/24/2022] Open
Abstract
Osteosarcoma (OS) is a primary solid malignant tumor that occurs most frequently in the metaphysis of long bones. More likely to happen to children and adolescents. OS has high mortality and disability rate. However, the etiology and pathogenesis of OS have not been fully understood till now. Due to the lack of effective biomarkers, OS cannot be precisely detected in the early stage. With the application of next-generation and high-throughput sequencing, more and more abnormally expressed non-coding RNAs(ncRNAs) have been identified in OS. Growing evidences have suggested the ncRNAs, such as microRNAs (miRNAs), long non-coding RNAs (lncRNAs), circular RNAs (circRNAs), have played an important role in the tumorigenesis and progression of OS. Thus, they can be served as novel biomarkers for diagnosis, treatment and prognosis. This review summarized the application of ncRNA as biomarkers in OS in detail, and discussed the limitation and future improvement of the potential biomarkers.
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Affiliation(s)
- Lijuan Fan
- Henan Luoyang Orthopedic Hospital (Henan Provincial Orthopedic Hospital), Zhengzhou, Henan, China
- Luoyang Postgraduate Training Department, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Zhenhao Zhong
- Department of Spinal Surgery, The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
| | - Yubo Lin
- School of Clinical Medicine, Guilin Medical University, Guilin, Guangxi, China
| | - Jitian Li
- Henan Luoyang Orthopedic Hospital (Henan Provincial Orthopedic Hospital), Zhengzhou, Henan, China
- Luoyang Postgraduate Training Department, Henan University of Chinese Medicine, Zhengzhou, Henan, China
- The First College for Clinical Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
- *Correspondence: Jitian Li,
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Fangusaro J, Mitchell DA, Kocak M, Robinson GW, Baxter PA, Hwang EI, Huang J, Onar-Thomas A, Dunkel IJ, Fouladi M, Warren KE. Phase 1 study of pomalidomide in children with recurrent, refractory, and progressive central nervous system tumors: A Pediatric Brain Tumor Consortium trial. Pediatr Blood Cancer 2021; 68:e28756. [PMID: 33025730 PMCID: PMC7757731 DOI: 10.1002/pbc.28756] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Central nervous system (CNS) malignancies are the most common solid tumors among children, and novel therapies are needed to help improve survival. Pomalidomide is an immunomodulatory agent that displays antiangiogenic and cytotoxic activity, making it an appropriate candidate to explore in pediatric CNS tumors. METHODS A phase 1 first in pediatric trial of pomalidomide was conducted in children with recurrent, progressive, and refractory CNS tumors. The primary objective was to determine the maximum tolerated dose (MTD) and/or recommended phase 2 dose (RP2D) when given orally once daily for 21 consecutive days of a 28-day cycle. Once the MTD was established, 12 additional patients were enrolled on expansion cohorts based on age and steroid use. RESULTS Twenty-nine children were enrolled and 25 were evaluable for dose-limiting toxicity (DLT). The MTD was 2.6 mg/m2 (dose level 2). Four DLTs were observed in three patients at dose level 3 (3.4 mg/m2 ) includeding grade 3 diarrhea, grade 3 thrombocytopenia, grade 3 lung infection, and grade 4 neutropenia. The most common adverse events were grade 1 and 2 myelosuppression. One patient with an oligodendroglioma had stable disease for nine cycles, and a second patient with an anaplastic pleomorphic xanthoastrocytoma achieved a sustained partial response. Immunologic analyses suggested that pomalidomide triggers immunomodulation. CONCLUSIONS The MTD of pomalidomide is 2.6 mg/m2 . It was well tolerated, and immune correlates showed a serum immune response. These data led to an industry-sponsored phase 2 trial of pomalidomide monotherapy in children with recurrent brain tumors (NCT03257631).
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Affiliation(s)
- Jason Fangusaro
- Children’s Healthcare of Atlanta and Emory University Medical School, Atlanta, GA
| | - Duane A. Mitchell
- University of Florida Brain Tumor Immunotherapy Program, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL
| | - Mehmet Kocak
- University of Tennessee Health Science Center, Memphis, TN
| | | | | | | | - Jianping Huang
- University of Florida Brain Tumor Immunotherapy Program, Preston A. Wells, Jr. Center for Brain Tumor Therapy, Gainesville, FL
| | | | - Ira J. Dunkel
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Maryam Fouladi
- Nationwide Children’s Hospital, Columbus, OH (work was done when author was at Cincinnati Children’s Hospital, Cincinnati, OH)
| | - Katherine E. Warren
- Dana Farber Cancer Institute and Harvard Medical School, Boston, MA (work was done when author was at the National Cancer Institute, Bethesda, MD)
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Longer term follow-up of the randomized phase III trial SWOG S0777: bortezomib, lenalidomide and dexamethasone vs. lenalidomide and dexamethasone in patients (Pts) with previously untreated multiple myeloma without an intent for immediate autologous stem cell transplant (ASCT). Blood Cancer J 2020; 10:53. [PMID: 32393732 PMCID: PMC7214419 DOI: 10.1038/s41408-020-0311-8] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/21/2020] [Accepted: 03/12/2020] [Indexed: 01/18/2023] Open
Abstract
SWOG S0777, a randomized phase III trial, compared bortezomib, lenalidomide and dexamethasone (VRd) with lenalidomide and dexamethasone (Rd). This updated analysis includes 460 patients evaluable for survival endpoints: 225 eligible and analyzable patients were randomized to Rd and 235 to VRd. The 6-month induction was six 28-day cycles of Rd and eight 21-day cycles of VRd followed by Rd maintenance for all patients. Median follow up is 84 months. Median PFS is 41 months for VRd and 29 months for Rd: stratified hazard ratio (96% Wald Confidence Interval) was 0.742 (0.594, 0.928) and one-sided stratified log-rank P-value 0.003. Median OS for VRd is still not reached with median OS for Rd being 69 months: stratified hazard ratio (96% Wald Confidence Interval) was 0.709 (0.543, 0.926) and stratified two-sided P-value was 0.0114. Both PFS and OS were improved with VRd versus Rd adjusting for age (P-values: 0.013 [PFS]; 0.033 [OS])). Median duration of Rd maintenance was 17.1 months. The addition of bortezomib to lenalidomide dexamethasone for induction therapy results in a statistically significant and clinically meaningful improvement in PFS as well as better OS. VRd continues to represent an appropriate standard of care irrespective of age.
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Abstract
Osteosarcoma is a malignant tumor that occurs most commonly in the metaphysis of the long bones in the limbs in children and adolescents. Even with surgery and neoadjuvant chemotherapy, the therapeutic effect has reached a peak with 60-70% survival rates. Therefore, new biological targets or molecular mechanisms that enhance the efficacy of osteosarcoma treatments are needed. Circular RNAs (circRNAs) are useful biomarkers that have recently been recognized clinically and in medical research and have been of interest due to the use of next-generation sequencing and bioinformatics analysis. CircRNAs are involved in many diseases, including cancer. Therefore, this review aims to summarize the roles of circRNA in the diagnosis, progression, and prognosis of osteosarcoma.
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Affiliation(s)
- Yong Zhang
- Department of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Jiale Li
- Department of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Yinsheng Wang
- Department of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Juehua Jing
- Department of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Jun Li
- Department of Orthopedics, The Second Hospital of Anhui Medical University, Hefei, Anhui, China (mainland)
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Takemori N, Imai G, Hoshino K, Ooi A, Kojima M. A novel combination of bortezomib, lenalidomide, and clarithromycin produced stringent complete response in refractory multiple myeloma complicated with diabetes mellitus - clinical significance and possible mechanisms: a case report. J Med Case Rep 2018; 12:40. [PMID: 29454372 PMCID: PMC5816938 DOI: 10.1186/s13256-017-1550-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 12/21/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND In general, dexamethasone is a required component drug in various combination chemotherapies for treating multiple myeloma, and its efficacy has been widely recognized. However, administration of dexamethasone is known to cause various adverse effects including hyperglycemia which requires insulin therapy. During the course of treatment, we developed a novel effective dexamethasone-free combination regimen and evaluated it for its effect in multiple myeloma. CASE PRESENTATION We report a case of 68-year-old Japanese woman with refractory advanced Bence-Jones-λ type multiple myeloma associated with diabetes mellitus. Various combination regimens were carried out, but the response to some regimens was insufficient or others containing dexamethasone, although effective, were inappropriate to continue due to aggravation of diabetes mellitus. Thus, we developed a dexamethasone-free, short dosing-period regimen consisting of bortezomib, lenalidomide, and clarithromycin. This regimen was found to be highly effective and succeeded in achieving stringent complete response. CONCLUSIONS The successful dexamethasone-free regimen clearly shows that dexamethasone is not a requisite component in treating multiple myeloma, and it can be substituted with clarithromycin. This regimen is particularly useful for treating patients with multiple myeloma associated with diabetes mellitus.
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Affiliation(s)
- Nobuo Takemori
- Division of Hematology, Department of Internal Medicine, Imai Hospital, Tanaka-cho 100, Ashikaga, Tochigi, 326-0822, Japan.
| | - Goro Imai
- Department of Internal Medicine, Imai Hospital, Tanaka-cho 100, Ashikaga, Tochigi, 326-0822, Japan
| | - Kazuo Hoshino
- Department of Surgery, Imai Hospital, Tanaka-cho 100, Ashikaga, Tochigi, 326-0822, Japan
| | - Akishi Ooi
- Department of Molecular and Cellular Pathology, School of Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8640, Japan
| | - Masaru Kojima
- Department of Diagnostic Pathology, Dokkyo Medical University School of Medicine, Shimotsuga-gun, Mibu-machi, Tochigi, 321-0293, Japan
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Mahony C, McMenemy S, Rafipay AJ, Beedie SL, Fraga LR, Gütschow M, Figg WD, Erskine L, Vargesson N. CPS49-induced neurotoxicity does not cause limb patterning anomalies in developing chicken embryos. J Anat 2017; 232:568-574. [PMID: 29023763 DOI: 10.1111/joa.12712] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/30/2017] [Indexed: 11/30/2022] Open
Abstract
Thalidomide notoriously caused severe birth defects, particularly to the limbs, in those exposed in utero following maternal use of the drug to treat morning sickness. How the drug caused these birth defects remains unclear. Many theories have been proposed including actions on the forming blood vessels. However, thalidomide survivors also have altered nerve patterns and the drug is known for its neurotoxic actions in adults following prolonged use. We have previously shown that CPS49, an anti-angiogenic analog of thalidomide, causes a range of limb malformations in a time-sensitive manner in chicken embryos. Here we investigated whether CPS49 also is neurotoxic and whether effects on nerve development impact upon limb development. We found that CPS49 is neurotoxic, just like thalidomide, and can cause some neuronal loss late developing chicken limbs, but only when the limb is already innervated. However, CPS49 exposure does not cause defects in limb size when added to late developing chicken limbs. In contrast, in early limb buds which are not innervated, CPS49 exposure affects limb area significantly. To investigate in more detail the role of neurotoxicity and its impact on chicken limb development we inhibited nerve innervation at a range of developmental timepoints through using β-bungarotoxin. We found that neuronal inhibition or ablation before, during or after limb outgrowth and innervation does not result in obvious limb cartilage patterning or number changes. We conclude that while CPS49 is neurotoxic, given the late innervation of the developing limb, and that neuronal inhibition/ablation throughout limb development does not cause similar limb patterning anomalies to those seen in thalidomide survivors, nerve defects are not the primary underlying cause of the severe limb patterning defects induced by CPS49/thalidomide.
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Affiliation(s)
- Chris Mahony
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Scott McMenemy
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Alexandra J Rafipay
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Shaunna-Leigh Beedie
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK.,Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Lucas Rosa Fraga
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | | | - William D Figg
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Lynda Erskine
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Neil Vargesson
- School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
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Kim HJ, Yoon SS, Eom HS, Kim K, Kim JS, Lee JJ, Bang SM, Min CK, Park JS, Lee JH. Use of lenalidomide in the management of relapsed or refractory multiple myeloma: expert recommendations in Korea. Blood Res 2015; 50:7-18. [PMID: 25830125 PMCID: PMC4377347 DOI: 10.5045/br.2015.50.1.7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/10/2015] [Accepted: 02/10/2015] [Indexed: 01/06/2023] Open
Abstract
Multiple myeloma (MM) is the third most common hematologic malignancy in Korea. Historically, the incidence of MM in Korea has been lower than that in Western populations, although there is growing evidence that the incidence of MM in Asian populations, including Korea, is increasing rapidly. Despite advances in the management of MM, patients will ultimately relapse or become refractory to their current treatment, and alternative therapeutic options are required in the relapsed/refractory setting. In Korea, although lenalidomide/dexamethasone is indicated for the treatment of relapsed or refractory MM (RRMM) in patients who have received at least one prior therapy, lenalidomide is reimbursable specifically only in patients with RRMM who have failed bortezomib-based treatment. Based on evidence from pivotal multinational clinical trials as well as recent studies in Asia, including Korea, lenalidomide/dexamethasone is an effective treatment option for patients with RRMM, regardless of age or disease status. Adverse events associated with lenalidomide/dexamethasone, including hematologic toxicity, venous thromboembolism, fatigue, rash, infection, and muscle cramps, are largely predictable and preventable/manageable with appropriate patient monitoring and/or the use of standard supportive medication and dose adjustment/interruption. Lenalidomide/dexamethasone provides an optimal response when used at first relapse, and treatment should be continued long term until disease progression. With appropriate modification of the lenalidomide starting dose, lenalidomide/dexamethasone is effective in patients with renal impairment and/or cytopenia. This review presents updated evidence from the published clinical literature and provides recommendations from an expert panel of Korean physicians regarding the use of lenalidomide/dexamethasone in patients with RRMM.
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Affiliation(s)
- Hyo Jung Kim
- Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Sung-Soo Yoon
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Hyeon Seok Eom
- Hematology-Oncology Clinic, National Cancer Center, Ilsan, Korea
| | - Kihyun Kim
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jin Seok Kim
- Division of Hematology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Je-Jung Lee
- Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea
| | - Soo-Mee Bang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Bundang, Korea
| | - Chang-Ki Min
- Division of Hematology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Joon Seong Park
- Department of Hematology-Oncology, Ajou University School of Medicine, Suwon, Korea
| | - Jae-Hoon Lee
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea
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Chen C, Baldassarre F, Kanjeekal S, Herst J, Hicks L, Cheung M. Lenalidomide in multiple myeloma-a practice guideline. Curr Oncol 2013; 20:e136-49. [PMID: 23559881 PMCID: PMC3615865 DOI: 10.3747/co.20.1252] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Promising new drugs such as lenalidomide, an immunomodulatory agent, are available for the treatment of multiple myeloma. We describe the process of creating a provincial guideline for the use of lenalidomide, alone or in combination with other drugs, in relapsed, refractory, or newly diagnosed disease (including smoldering and symptomatic patients, and candidates and non-candidates for transplant) and in maintenance treatment (after transplant or non-transplant therapy); and for strategies to manage lenalidomide-related toxicities. METHODS Outcomes of interest included overall survival, event-free survival, progression-free survival, time to progression, time to next treatment, response rate, and incidence of serious toxicity. The medline, embase, and Cochrane Library databases, as well as meeting abstracts and the Web sites of relevant organizations, were systematically searched for relevant literature. RESULTS Recommendations were developed using the evidence from published studies and the clinical expertise of the working group and of the Cancer Care Ontario Hematology Disease Site Group. CONCLUSIONS Lenalidomide in combination with dexamethasone can be recommended for both previously untreated and treated patients with multiple myeloma. Guidelines for the management of cytopenias, venous thromboembolism, and second primary malignancies are discussed.
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Affiliation(s)
- C. Chen
- Department of Medical Oncology and Hematology, Princess Margaret Hospital, Toronto, ON
| | - F. Baldassarre
- Department of Oncology, Program in Evidence-Based Care, McMaster University, Hamilton, ON
| | - S. Kanjeekal
- Regional Cancer Centre, Windsor Regional Hospital, Windsor, ON
| | - J. Herst
- Northeast Cancer Centre, Health Sciences North, Sudbury, ON
| | - L. Hicks
- General Hematology and Oncology, Saint Michael’s Hospital, Toronto, ON
| | - M. Cheung
- Department of Medical Oncology and Hematology, Odette Cancer Centre at Sunnybrook Health Sciences Centre, Toronto, ON
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Lopez-Girona A, Mendy D, Ito T, Miller K, Gandhi AK, Kang J, Karasawa S, Carmel G, Jackson P, Abbasian M, Mahmoudi A, Cathers B, Rychak E, Gaidarova S, Chen R, Schafer PH, Handa H, Daniel TO, Evans JF, Chopra R. Cereblon is a direct protein target for immunomodulatory and antiproliferative activities of lenalidomide and pomalidomide. Leukemia 2012; 26:2326-35. [PMID: 22552008 PMCID: PMC3496085 DOI: 10.1038/leu.2012.119] [Citation(s) in RCA: 615] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Thalidomide and the immunomodulatory drug, lenalidomide, are therapeutically active in hematological malignancies. The ubiquitously expressed E3 ligase protein cereblon (CRBN) has been identified as the primary teratogenic target of thalidomide. Our studies demonstrate that thalidomide, lenalidomide and another immunomodulatory drug, pomalidomide, bound endogenous CRBN and recombinant CRBN–DNA damage binding protein-1 (DDB1) complexes. CRBN mediated antiproliferative activities of lenalidomide and pomalidomide in myeloma cells, as well as lenalidomide- and pomalidomide-induced cytokine production in T cells. Lenalidomide and pomalidomide inhibited autoubiquitination of CRBN in HEK293T cells expressing thalidomide-binding competent wild-type CRBN, but not thalidomide-binding defective CRBNYW/AA. Overexpression of CRBN wild-type protein, but not CRBNYW/AA mutant protein, in KMS12 myeloma cells, amplified pomalidomide-mediated reductions in c-myc and IRF4 expression and increases in p21WAF-1 expression. Long-term selection for lenalidomide resistance in H929 myeloma cell lines was accompanied by a reduction in CRBN, while in DF15R myeloma cells resistant to both pomalidomide and lenalidomide, CRBN protein was undetectable. Our biophysical, biochemical and gene silencing studies show that CRBN is a proximate, therapeutically important molecular target of lenalidomide and pomalidomide.
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Farnoushi Y, Cipok M, Kay S, Jan H, Ohana A, Naparstek E, Goldstein RS, Deutsch VR. Rapid in vivo testing of drug response in multiple myeloma made possible by xenograft to turkey embryos. Br J Cancer 2011; 105:1708-18. [PMID: 22045188 PMCID: PMC3242603 DOI: 10.1038/bjc.2011.445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Background: The best current xenograft model of multiple myeloma (MM) in immune-deficient non-obese diabetic/severe-combined immunodeficient mice is costly, animal maintenance is complex and several weeks are required to establish engraftment and study drug efficacy. More practical in vivo models may reduce time and drug development cost. We recently described a rapid low-cost xenograft model of human blood malignancies in pre-immune turkey. Here, we report application of this system for studying MM growth and the preclinical assessment of anticancer therapies. Methods: Cell lines and MM patient cells were injected intravenously into embryonic veins on embryonic day 11 (E11). Engraftment of human cells in haematopoietic organs was detected by quantitative real-time polymerase chain reaction, immunohistochemistry, flow cytometry and circulating free light chain. Results: Engraftment was detected after 1 week in all embryos injected with cell lines and in 50% of those injected with patient cells. Injection of bortezomib or lenalinomide 48 h after cell injection at therapeutic levels that were not toxic to the bone marrow dramatically reduced MM engraftment. Conclusion: The turkey embryo provides a practical, xenograft system to study MM and demonstrates the utility of this model for rapid and affordable testing therapeutics in vivo. With further development, this model may enable rapid, inexpensive personalised drug screening.
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Affiliation(s)
- Y Farnoushi
- Department of Hematology, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, 6 Weizman Street, Tel Aviv Israel
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In vitro effects of perifosine, bortezomib and lenalidomide against hematopoietic progenitor cells from healthy donors. Invest New Drugs 2011; 30:1396-403. [PMID: 21750922 DOI: 10.1007/s10637-011-9705-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Accepted: 06/13/2011] [Indexed: 10/18/2022]
Abstract
The novel AKT inhibitor perifosine possesses myelopoiesis-stimulating effects in rodents. We studied the in vitro effects of the novel agents perifosine, bortezomib and lenalidomide in addition to adriamycin against normal human hematopoietic progenitor cells (HPC) using different clonogenic and non-clonogenic assays. All agents inhibited colony-forming unit (CFU) formation, perifosine inhibiting mainly CFU-granulocyte/macrophage formation and the other agents burst-forming unit-erythroid formation. Perifosine combined with lenalidomide or adriamycin tended to act antagonistically in suppressing CFU formation. Despite their inhibition of CFU formation, perifosine, bortezomib and lenalidomide induced only slight or moderate cytotoxicity in CD34(+) selected HPC, as assessed using different assays such as flow cytometry-based detection of activated caspases and immunohistochemistry studies (e.g., Ki-67 staining). In contrast to its myelopoiesis-stimulating effects in rodents, perifosine--like bortezomib and lenalidomide--suppresses the clonogenic potential of HPC from healthy donors in vitro and thus probably plays no role in preventing neutropenia or in shorting its duration after intensive chemotherapy. However, all these novel agents typically induce only slight or moderate suppression of the clonogenic potential or loss of viability of normal HPC at clinically achievable plasma concentrations, assuming that hematoxicity is manageable and functional HPC can be collected after treatment with these compounds.
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12
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Wei D, Mingxi Y, Jianwang X, Hao Z, Ming L, Pei L. Dexamethasone plus lenalidomide in treatment of multiple myeloma. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s1000-1948(11)60023-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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