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Zutshi N, Mohapatra BC, Mondal P, An W, Goetz BT, Wang S, Li S, Storck MD, Mercer DF, Black AR, Thayer SP, Black JD, Lin C, Band V, Band H. Cbl and Cbl-b ubiquitin ligases are essential for intestinal epithelial stem cell maintenance. iScience 2024; 27:109912. [PMID: 38974465 PMCID: PMC11225835 DOI: 10.1016/j.isci.2024.109912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 02/29/2024] [Accepted: 05/03/2024] [Indexed: 07/09/2024] Open
Abstract
Receptor tyrosine kinases (RTKs) control stem cell maintenance vs. differentiation decisions. Casitas B-lineage lymphoma (CBL) family ubiquitin ligases are negative regulators of RTKs, but their stem cell regulatory roles remain unclear. Here, we show that Lgr5+ intestinal stem cell (ISC)-specific inducible Cbl-knockout (KO) on a Cblb null mouse background (iDKO) induced rapid loss of the Lgr5 Hi ISCs with transient expansion of the Lgr5 Lo transit-amplifying population. LacZ-based lineage tracing revealed increased ISC commitment toward enterocyte and goblet cell fate at the expense of Paneth cells. Functionally, Cbl/Cblb iDKO impaired the recovery from radiation-induced intestinal epithelial injury. In vitro, Cbl/Cblb iDKO led to inability to maintain intestinal organoids. Single-cell RNA sequencing in organoids identified Akt-mTOR (mammalian target of rapamycin) pathway hyperactivation upon iDKO, and pharmacological Akt-mTOR axis inhibition rescued the iDKO defects. Our results demonstrate a requirement for Cbl/Cblb in the maintenance of ISCs by fine-tuning the Akt-mTOR axis to balance stem cell maintenance vs. commitment to differentiation.
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Affiliation(s)
- Neha Zutshi
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Pathology & Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Bhopal C. Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Genetics, Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Pinaki Mondal
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Wei An
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Benjamin T. Goetz
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Shuo Wang
- Department of Radiation Oncology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Sicong Li
- Department of Radiation Oncology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Matthew D. Storck
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - David F. Mercer
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Adrian R. Black
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Sarah P. Thayer
- Department of Surgery, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Jennifer D. Black
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Chi Lin
- Department of Radiation Oncology, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Vimla Band
- Department of Genetics, Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Hamid Band
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Pathology & Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Department of Genetics, Cell Biology & Anatomy, University of Nebraska Medical Center, Omaha, NE 68198, USA
- Fred & Pamela Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Huang L, Thiex NW, Lou J, Ahmad G, An W, Low-Nam ST, Kerkvliet JG, Band H, Hoppe AD. The ubiquitin ligases Cbl and Cbl-b regulate macrophage growth by controlling CSF-1R import into macropinosomes. Mol Biol Cell 2024; 35:ar38. [PMID: 38170572 PMCID: PMC10916879 DOI: 10.1091/mbc.e23-09-0345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/11/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
The ubiquitination of transmembrane receptors regulates endocytosis, intracellular traffic, and signal transduction. Bone marrow-derived macrophages from myeloid Cbl-/- and Cbl-b-/- double knockout (DKO) mice display sustained proliferation mirroring the myeloproliferative disease that these mice succumb to. Here, we found that the ubiquitin ligases Cbl and Cbl-b have overlapping functions for controlling the endocytosis and intracellular traffic of the CSF-1R. DKO macrophages displayed complete loss of ubiquitination of the CSF-1R whereas partial ubiquitination was observed for either single Cbl-/- or Cbl-b-/- macrophages. Unlike wild type, DKO macrophages were immortal and displayed slower CSF-1R internalization, elevated AKT signaling, and a failure to transport the CSF-1R into the lumen of nascent macropinosomes, leaving its cytoplasmic region available for signaling. CSF-1R degradation depended upon lysosomal vATPase activity in both WT and DKO macrophages, with this degradation confined to macropinosomes in WT but occurring in distributed/tubular lysosomes in DKO cells. RNA-sequencing comparison of Cbl-/-, Cbl-b-/- and DKO macrophages indicated that while the overall macrophage transcriptional program remained intact, DKO macrophages had alterations in gene expression associated with growth factor signaling, cell cycle, inflammation and senescence. Cbl-b-/- had minimal effect on the transcriptional program whereas Cbl-/- led to more alternations but only DKO macrophages demonstrated substantial changes in the transcriptome, suggesting overlapping but unique functions for the two Cbl-family members. Thus, Cbl/Cbl-b-mediated ubiquitination of CSF-1R regulates its endocytic fate, constrains inflammatory gene expression, and regulates signaling for macrophage proliferation.
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Affiliation(s)
- Lu Huang
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007
- BioSNTR, Brookings, SD 57007
| | - Natalie W. Thiex
- Department of Biology and Microbiology, South Dakota State University, Brookings, SD 57007
- BioSNTR, Brookings, SD 57007
| | - Jieqiong Lou
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007
| | - Gulzar Ahmad
- Eppley Institute for Research in Cancer and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
| | - Wei An
- Eppley Institute for Research in Cancer and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
| | - Shalini T. Low-Nam
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007
| | - Jason G. Kerkvliet
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007
- BioSNTR, Brookings, SD 57007
| | - Hamid Band
- Eppley Institute for Research in Cancer and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198
| | - Adam D. Hoppe
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, SD 57007
- BioSNTR, Brookings, SD 57007
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Chen H, Bai Y, Kobayashi M, Xiao S, Barajas S, Cai W, Chen S, Miao J, Meke FN, Yao C, Yang Y, Strube K, Satchivi O, Sun J, Rönnstrand L, Croop JM, Boswell HS, Jia Y, Liu H, Li LS, Altman JK, Eklund EA, Sukhanova M, Ji P, Tong W, Band H, Huang DT, Platanias LC, Zhang ZY, Liu Y. PRL2 Phosphatase Promotes Oncogenic KIT Signaling in Leukemia Cells through Modulating CBL Phosphorylation. Mol Cancer Res 2024; 22:94-103. [PMID: 37756563 PMCID: PMC10841656 DOI: 10.1158/1541-7786.mcr-23-0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 07/13/2023] [Accepted: 09/25/2023] [Indexed: 09/29/2023]
Abstract
Receptor tyrosine kinase KIT is frequently activated in acute myeloid leukemia (AML). While high PRL2 (PTP4A2) expression is correlated with activation of SCF/KIT signaling in AML, the underlying mechanisms are not fully understood. We discovered that inhibition of PRL2 significantly reduces the burden of oncogenic KIT-driven leukemia and extends leukemic mice survival. PRL2 enhances oncogenic KIT signaling in leukemia cells, promoting their proliferation and survival. We found that PRL2 dephosphorylates CBL at tyrosine 371 and inhibits its activity toward KIT, leading to decreased KIT ubiquitination and enhanced AKT and ERK signaling in leukemia cells. IMPLICATIONS Our studies uncover a novel mechanism that fine-tunes oncogenic KIT signaling in leukemia cells and will likely identify PRL2 as a novel therapeutic target in AML with KIT mutations.
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Affiliation(s)
- Hongxia Chen
- Department of Hematology, Chongqing University Three Gorges Hospital, Chongqing, China
- Department of Medicine, Northwestern University, Chicago, USA
- School of Medicine, Chongqing University, Chongqing, China
| | - Yunpeng Bai
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, USA
| | - Michihiro Kobayashi
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Shiyu Xiao
- Department of Medicine, Northwestern University, Chicago, USA
| | - Sergio Barajas
- Department of Medicine, Northwestern University, Chicago, USA
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Wenjie Cai
- Department of Medicine, Northwestern University, Chicago, USA
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Sisi Chen
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Jinmin Miao
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, USA
| | - Frederick Nguele Meke
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, USA
| | - Chonghua Yao
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
- Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai, China
| | - Yuxia Yang
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
- Department of Medical Genetics, Peking University Health Science Center, Beijing, China
| | - Katherine Strube
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Odelia Satchivi
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - Jianmin Sun
- Division of Translational Cancer Research and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - Lars Rönnstrand
- Division of Translational Cancer Research and Lund Stem Cell Center, Lund University, Lund, Sweden
| | - James M. Croop
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, USA
| | - H. Scott Boswell
- Department of Medicine, Indiana University School of Medicine, Indianapolis, USA
| | - Yuzhi Jia
- Department of Pharmacology, Northwestern University, Chicago, USA
| | - Huiping Liu
- Department of Pharmacology, Northwestern University, Chicago, USA
- Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
| | - Loretta S. Li
- Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
- Department of Pediatrics, Northwestern University, Chicago, IL 60611, USA
| | - Jessica K. Altman
- Department of Medicine, Northwestern University, Chicago, USA
- Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
| | - Elizabeth A. Eklund
- Department of Medicine, Northwestern University, Chicago, USA
- Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
- Department of Medicine, Jesse Brown VA Medical Center, Chicago, Illinois, USA
| | | | - Peng Ji
- Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
- Department of Pathology, Northwestern University, Chicago, USA
| | - Wei Tong
- Children’s Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA
| | - Hamid Band
- Department of Genetics, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Danny T. Huang
- Cancer Research UK Beatson Institute and Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Leonidas C. Platanias
- Department of Medicine, Northwestern University, Chicago, USA
- Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
- Department of Medicine, Jesse Brown VA Medical Center, Chicago, Illinois, USA
| | - Zhong-Yin Zhang
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, USA
| | - Yan Liu
- Department of Medicine, Northwestern University, Chicago, USA
- Robert H. Lurie Comprehensive Cancer Center, Chicago, USA
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Zutshi N, Mohapatra BC, Mondal P, An W, Goetz BT, Wang S, Li S, Storck MD, Mercer DF, Black AR, Thayer SP, Black JD, Lin C, Band V, Band H. Cbl and Cbl-b Ubiquitin Ligases are Essential for Intestinal Epithelial Stem Cell Maintenance. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.17.541154. [PMID: 37292716 PMCID: PMC10245689 DOI: 10.1101/2023.05.17.541154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Among the signaling pathways that control the stem cell self-renewal and maintenance vs. acquisition of differentiated cell fates, those mediated by receptor tyrosine kinase (RTK) activation are well established as key players. CBL family ubiquitin ligases are negative regulators of RTKs but their physiological roles in regulating stem cell behaviors are unclear. While hematopoietic Cbl/Cblb knockout (KO) leads to a myeloproliferative disease due to expansion and reduced quiescence of hematopoietic stem cells, mammary epithelial KO led to stunted mammary gland development due to mammary stem cell depletion. Here, we examined the impact of inducible Cbl/Cblb double-KO (iDKO) selectively in the Lgr5-defined intestinal stem cell (ISC) compartment. Cbl/Cblb iDKO led to rapid loss of the Lgr5 Hi ISC pool with a concomitant transient expansion of the Lgr5 Lo transit amplifying population. LacZ reporter-based lineage tracing showed increased ISC commitment to differentiation, with propensity towards enterocyte and goblet cell fate at the expense of Paneth cells. Functionally, Cbl/Cblb iDKO impaired the recovery from radiation-induced intestinal epithelial injury. In vitro , Cbl/Cblb iDKO led to inability to maintain intestinal organoids. Single cell RNAseq analysis of organoids revealed Akt-mTOR pathway hyperactivation in iDKO ISCs and progeny cells, and pharmacological inhibition of the Akt-mTOR axis rescued the organoid maintenance and propagation defects. Our results demonstrate a requirement for Cbl/Cblb in the maintenance of ISCs by fine tuning the Akt-mTOR axis to balance stem cell maintenance vs. commitment to differentiation.
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Chen H, Bai Y, Kobayashi M, Xiao S, Cai W, Barajas S, Chen S, Miao J, Meke FN, Vemula S, Ropa JP, Croop JM, Boswell HS, Wan J, Jia Y, Liu H, Li LS, Altman JK, Eklund EA, Ji P, Tong W, Band H, Huang DT, Platanias LC, Zhang ZY, Liu Y. PRL2 phosphatase enhances oncogenic FLT3 signaling via dephosphorylation of the E3 ubiquitin ligase CBL at tyrosine 371. Blood 2023; 141:244-259. [PMID: 36206490 PMCID: PMC9936309 DOI: 10.1182/blood.2022016580] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 09/06/2022] [Accepted: 09/24/2022] [Indexed: 02/05/2023] Open
Abstract
Acute myeloid leukemia (AML) is an aggressive blood cancer with poor prognosis. FMS-like tyrosine kinase receptor-3 (FLT3) is one of the major oncogenic receptor tyrosine kinases aberrantly activated in AML. Although protein tyrosine phosphatase PRL2 is highly expressed in some subtypes of AML compared with normal human hematopoietic stem and progenitor cells, the mechanisms by which PRL2 promotes leukemogenesis are largely unknown. We discovered that genetic and pharmacological inhibition of PRL2 significantly reduce the burden of FLT3-internal tandem duplications-driven leukemia and extend the survival of leukemic mice. Furthermore, we found that PRL2 enhances oncogenic FLT3 signaling in leukemia cells, promoting their proliferation and survival. Mechanistically, PRL2 dephosphorylates the E3 ubiquitin ligase CBL at tyrosine 371 and attenuates CBL-mediated ubiquitination and degradation of FLT3, leading to enhanced FLT3 signaling in leukemia cells. Thus, our study reveals that PRL2 enhances oncogenic FLT3 signaling in leukemia cells through dephosphorylation of CBL and will likely establish PRL2 as a novel druggable target for AML.
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Affiliation(s)
- Hongxia Chen
- Department of Hematology and Oncology, Chongqing University Three Gorges Hospital, Chongqing, China
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
- School of Medicine, Chongqing University, Chongqing, China
| | - Yunpeng Bai
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, IN
| | - Michihiro Kobayashi
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - Shiyu Xiao
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Wenjie Cai
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - Sergio Barajas
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - Sisi Chen
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - Jinmin Miao
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, IN
| | - Frederick Nguele Meke
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, IN
| | - Sasidhar Vemula
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - James P. Ropa
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN
| | - James M. Croop
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN
| | - H. Scott Boswell
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN
| | - Jun Wan
- Department of Medical Genetics, Indiana University, Indianapolis, IN
| | - Yuzhi Jia
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Huiping Liu
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
| | - Loretta S. Li
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Jessica K. Altman
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
| | - Elizabeth A. Eklund
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
- Department of Medicine, Jesse Brown VA Medical Center, Chicago, IL
| | - Peng Ji
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Wei Tong
- Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, Philadelphia, PA
| | - Hamid Band
- Department of Genetics, University of Nebraska Medical Center, Omaha, NB
| | - Danny T. Huang
- Cancer Research UK Beatson Institute and Institute of Cancer Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Leonidas C. Platanias
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
- Department of Medicine, Jesse Brown VA Medical Center, Chicago, IL
| | - Zhong-Yin Zhang
- Department of Medicinal Chemistry and Molecular Pharmacology, Center for Cancer Research, and Institute for Drug Discovery, Purdue University, West Lafayette, IN
| | - Yan Liu
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
- Robert H. Lurie Comprehensive Cancer Center, Chicago, IL
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Pawlik A, Malinowski D, Paradowska-Gorycka A, Safranow K, Dziedziejko V. VAV1 Gene Polymorphisms in Patients with Rheumatoid Arthritis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17093214. [PMID: 32380774 PMCID: PMC7246862 DOI: 10.3390/ijerph17093214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 04/30/2020] [Accepted: 05/02/2020] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is an important public health problem because this disease often causes disability. RA is a chronic, destructive autoimmune disease that leads to joint destruction and the development of extraarticular manifestations. VAV1 is an intracellular signal transduction protein that plays a significant role in signal transduction in T cells and affects T cell development, proliferation and activation. The VAV1 gene contains 27 exons and is located on chromosome 19. In this study, we examined the association between VAV1 rs2546133 and rs2617822 polymorphisms and RA. METHODS We examined 422 patients with RA and 338 healthy subjects as the control group. RESULTS Among RA patients, there was a statistically significant increase in the frequency of VAV1 rs2546133 polymorphism in T allele carriers (TT + CT versus CC, odds ratio: 1.69, 95% confidence interval 1.05-2.73, p = 0.035). There was no statistically significant difference in the distribution of the rs2617822 genotypes and alleles between RA patients and the control group. Additionally, patients who carried the VAV1 rs2546133 T and rs2617822 G allele presented an increased frequency of extraarticular manifestations: vasculitis, amyloidosis and Sjogren syndrome. CONCLUSIONS The results suggest an association between VAV1 gene rs2617822 polymorphism and RA.
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Affiliation(s)
- Andrzej Pawlik
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland
- Correspondence:
| | - Damian Malinowski
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, 70-111 Szczecin, Poland;
| | - Agnieszka Paradowska-Gorycka
- Department of Molecular Biology, National Institute of Geriatrics, Rheumatology and Rehabilitation, 02-637 Warsaw, Poland;
| | - Krzysztof Safranow
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.S.); (V.D.)
| | - Violetta Dziedziejko
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.S.); (V.D.)
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7
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Mercher T, Schwaller J. Pediatric Acute Myeloid Leukemia (AML): From Genes to Models Toward Targeted Therapeutic Intervention. Front Pediatr 2019; 7:401. [PMID: 31681706 PMCID: PMC6803505 DOI: 10.3389/fped.2019.00401] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 09/17/2019] [Indexed: 12/20/2022] Open
Abstract
This review aims to provide an overview of the current knowledge of the genetic lesions driving pediatric acute myeloid leukemia (AML), emerging biological concepts, and strategies for therapeutic intervention. Hereby, we focus on lesions that preferentially or exclusively occur in pediatric patients and molecular markers of aggressive disease with often poor outcome including fusion oncogenes that involve epigenetic regulators like KMT2A, NUP98, or CBFA2T3, respectively. Functional studies were able to demonstrate cooperation with signaling mutations leading to constitutive activation of FLT3 or the RAS signal transduction pathways. We discuss the issues faced to faithfully model pediatric acute leukemia in mice. Emerging experimental evidence suggests that the disease phenotype is dependent on the appropriate expression and activity of the driver fusion oncogenes during a particular window of opportunity during fetal development. We also highlight biochemical studies that deciphered some molecular mechanisms of malignant transformation by KMT2A, NUP98, and CBFA2T3 fusions, which, in some instances, allowed the development of small molecules with potent anti-leukemic activities in preclinical models (e.g., inhibitors of the KMT2A-MENIN interaction). Finally, we discuss other potential therapeutic strategies that not only target driver fusion-controlled signals but also interfere with the transformed cell state either by exploiting the primed apoptosis or vulnerable metabolic states or by increasing tumor cell recognition and elimination by the immune system.
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Affiliation(s)
- Thomas Mercher
- INSERM U1170, Equipe Labellisée Ligue Contre le Cancer, Gustave Roussy Institute, Université Paris Diderot, Université Paris-Sud, Villejuif, France
| | - Juerg Schwaller
- Department of Biomedicine, University Children's Hospital Beider Basel (UKBB), University of Basel, Basel, Switzerland
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8
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Lv K, Jiang J, Donaghy R, Riling CR, Cheng Y, Chandra V, Rozenova K, An W, Mohapatra BC, Goetz BT, Pillai V, Han X, Todd EA, Jeschke GR, Langdon WY, Kumar S, Hexner EO, Band H, Tong W. CBL family E3 ubiquitin ligases control JAK2 ubiquitination and stability in hematopoietic stem cells and myeloid malignancies. Genes Dev 2017; 31:1007-1023. [PMID: 28611190 PMCID: PMC5495118 DOI: 10.1101/gad.297135.117] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 05/23/2017] [Indexed: 01/08/2023]
Abstract
Here, Lv et al. report that the CBL family E3 ubiquitin ligases down-regulate JAK2 stability and signaling via the adaptor protein LNK/SH2B3. Their results reveal a novel signaling axis that regulates JAK2 in normal and malignant HSPCs and suggest new therapeutic strategies for treating CBLmut myeloid malignancies. Janus kinase 2 (JAK2) is a central kinase in hematopoietic stem/progenitor cells (HSPCs), and its uncontrolled activation is a prominent oncogenic driver of hematopoietic neoplasms. However, molecular mechanisms underlying the regulation of JAK2 have remained elusive. Here we report that the Casitas B-cell lymphoma (CBL) family E3 ubiquitin ligases down-regulate JAK2 stability and signaling via the adaptor protein LNK/SH2B3. We demonstrated that depletion of CBL/CBL-B or LNK abrogated JAK2 ubiquitination, extended JAK2 half-life, and enhanced JAK2 signaling and cell growth in human cell lines as well as primary murine HSPCs. Built on these findings, we showed that JAK inhibitor (JAKi) significantly reduced aberrant HSPCs and mitigated leukemia development in a mouse model of aggressive myeloid leukemia driven by loss of Cbl and Cbl-b. Importantly, primary human CBL mutated (CBLmut) leukemias exhibited increased JAK2 protein levels and signaling and were hypersensitive to JAKi. Loss-of-function mutations in CBL E3 ubiquitin ligases are found in a wide range of myeloid malignancies, which are diseases without effective treatment options. Hence, our studies reveal a novel signaling axis that regulates JAK2 in normal and malignant HSPCs and suggest new therapeutic strategies for treating CBLmut myeloid malignancies.
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Affiliation(s)
- Kaosheng Lv
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Jing Jiang
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Ryan Donaghy
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | | | - Ying Cheng
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Vemika Chandra
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Krasimira Rozenova
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Wei An
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Bhopal C Mohapatra
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Benjamin T Goetz
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Vinodh Pillai
- Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA
| | - Xu Han
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Emily A Todd
- Progenra, Inc., Malvern, Pennsylvania 19355, USA
| | - Grace R Jeschke
- Division of Hematology and Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Wallace Y Langdon
- School of Pathology and Laboratory Medicine, University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Suresh Kumar
- Progenra, Inc., Malvern, Pennsylvania 19355, USA
| | - Elizabeth O Hexner
- Division of Hematology and Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Hamid Band
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA.,Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center, Omaha, Nebraska 6819, USA
| | - Wei Tong
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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