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Yuan X, Piao L, Wang L, Han X, Zhuang M, Liu Z. Pivotal roles of protein 4.1B/DAL‑1, a FERM‑domain containing protein, in tumor progression (Review). Int J Oncol 2019; 55:979-987. [PMID: 31545421 DOI: 10.3892/ijo.2019.4877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 09/04/2019] [Indexed: 11/06/2022] Open
Abstract
Protein 4.1B/DAL‑1, encoded by erythrocyte membrane protein band 4.1‑like 3 (EPB41L3), belongs to the protein 4.1 superfamily, a group of proteins that share a conserved four.one‑ezrin‑radixin‑moesin (FERM) domain. Protein 4.1B/DAL‑1 serves a crucial role in cytoskeletal organization and a number of processes through multiple interactions with membrane proteins via its FERM, spectrin‑actin‑binding and C‑terminal domains. A number of studies have indicated that a loss of EPB41L3 expression is commonly observed in lung cancer, breast cancer, esophageal squamous cell carcinoma and meningiomas. DNA methylation and a loss of heterozygosity have been reported to contribute to the downregulation of EPB41L3. To date, the biological functions of protein 4.1B/DAL‑1 in carcinogenesis remain unknown. The present review summarizes the current understanding of the role of protein 4.1B/DAL‑1 in cancer and highlights its potential as a cancer diagnostic and prognostic biomarker in cancer therapeutics.
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Affiliation(s)
- Xiaofeng Yuan
- Department of Orthopaedics, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Lianhua Piao
- Institute of Bioinformatics and Medical Engineering, Jiangsu University of Technology, Changzhou, Jiangsu 213001, P.R. China
| | - Luhui Wang
- Department of Orthopaedics, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Xu Han
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Ming Zhuang
- Department of Orthopaedics, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
| | - Zhiwei Liu
- Department of Orthopaedics, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213000, P.R. China
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Bosanquet DC, Ye L, Harding KG, Jiang WG. FERM family proteins and their importance in cellular movements and wound healing (review). Int J Mol Med 2014; 34:3-12. [PMID: 24820650 DOI: 10.3892/ijmm.2014.1775] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Accepted: 03/10/2014] [Indexed: 11/06/2022] Open
Abstract
Motility is a requirement for a number of biological processes, including embryonic development, neuronal development, immune responses, cancer progression and wound healing. Specific to wound healing is the migration of endothelial cells, fibroblasts and other key cellular players into the wound space. Aberrations in wound healing can result in either chronic wounds or abnormally healed wounds. The protein 4.1R, ezrin, radixin, moesin (FERM) superfamily consists of over 40 proteins all containing a three lobed N-terminal FERM domain which binds a variety of cell-membrane associated proteins and lipids. The C-terminal ends of these proteins typically contain an actin-binding domain (ABD). These proteins therefore mediate the linkage between the cell membrane and the actin cytoskeleton, and are involved in cellular movements and migration. Certain FERM proteins have been shown to promote cancer metastasis via this very mechanism. Herein we review the effects of a number of FERM proteins on wound healing and cancer. We show how these proteins typically aid wound healing through their effects on increasing cellular migration and movements, but also typically promote metastasis in cancer. We conclude that FERM proteins play important roles in cellular migration, with markedly different outcomes in the context of cancer and wound healing.
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Affiliation(s)
- David C Bosanquet
- Departments of Surgery and Wound Healing, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XW, UK
| | - Lin Ye
- Departments of Surgery and Wound Healing, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XW, UK
| | - Keith G Harding
- Departments of Surgery and Wound Healing, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XW, UK
| | - Wen G Jiang
- Departments of Surgery and Wound Healing, Cardiff University School of Medicine, Heath Park, Cardiff CF14 4XW, UK
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Ohno N, Terada N, Yamakawa H, Komada M, Ohara O, Trapp BD, Ohno S. Expression of protein 4.1G in Schwann cells of the peripheral nervous system. J Neurosci Res 2006; 84:568-77. [PMID: 16752423 DOI: 10.1002/jnr.20949] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The membrane-associated cytoskeletal proteins, including protein 4.1 family, play important roles in membrane integrity, protein targeting, and signal transduction. Although protein 4.1G (4.1G) is expressed ubiquitously in mammalian tissues, it can have very discrete distributions within cells. The present study investigated the expression and distributions of 4.1G in rodent sciatic nerve. Northern and Western blot analysis detected abundant 4.1G mRNA and protein in rat sciatic nerve extracts. Immunohistochemical staining with a 4.1G-specific antibody and double immunolabeling with E-cadherin, betaIV spectrin, and connexin 32 detected 4.1G in paranodal loops, Schmidt-Lanterman incisures, and periaxonal, mesaxonal, and abaxonal membranes of rodent sciatic nerve. Immunoelectron microscopy confirmed the immunodistribution of 4.1G in Schwann cells. In developing mouse sciatic nerves, 4.1G was diffusely distributed in immature Schwann cells and gradually localized at paranodes, incisures, and periaxonal and mesaxonal membranes during their maturation. These data support the concept that 4.1G plays an important role in the membrane expansion and specialization that occurs during formation and maintenance of myelin internodes in the peripheral nervous system.
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Affiliation(s)
- Nobuhiko Ohno
- Department of Anatomy, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo-City, Yamanashi, Japan
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Terada N, Ohno N, Yamakawa H, Ohara O, Ohno S. Topographical significance of membrane skeletal component protein 4.1 B in mammalian organs. Anat Sci Int 2005; 80:61-70. [PMID: 15960311 DOI: 10.1111/j.1447-073x.2005.00094.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The polarized architecture of epithelial cells is a fundamental determinant of cell structures and functions. Both formation and orientation of proper epithelial polarity are needed for cell-cell or cell-matrix adhesion, signal transduction and cytoskeletal interactions of multimolecular complexes at apical, lateral and basal cell membranes. These cell membrane domains are usually segregated by some junctional complexes. Recent molecular genetic studies on the anchor structure between myelin sheaths and axons have indicated the specific molecular organization for polarization of axolemma and the myelin sheaths at paranodes, termed 'septate-like junctions'. It was also speculated that other mammalian organs may use a similar junctional system. The protein 4.1 B was originally found to be localized in paranodes and juxtaparanodes of myelinated nerve fibers. Our recent immunohistochemical studies on protein 4.1B have indicated its significance for the cell-cell and/or cell-matrix adhesion in various rodent organs. The protein 4.1 family of proteins have been supposed to possess variable molecular domains relating to cell adhesion, ion balance, receptor responses and signal transduction. Therefore, more precise studies on the molecular structure and the functional domains of protein 4.1B, as well as on its changes under physiological and pathological conditions, may provide a clue for organogenesis in various mammalian organs.
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Affiliation(s)
- Nobuo Terada
- Department of Anatomy, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Tamaho, Japan.
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Sun CX, Robb VA, Gutmann DH. Protein 4.1 tumor suppressors: getting a FERM grip on growth regulation. J Cell Sci 2002; 115:3991-4000. [PMID: 12356905 DOI: 10.1242/jcs.00094] [Citation(s) in RCA: 131] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Members of the Protein 4.1 superfamily have highly conserved FERM domains that link cell surface glycoproteins to the actin cytoskeleton. Within this large and constantly expanding superfamily, at least five subgroups have been proposed. Two of these subgroups, the ERM and prototypic Protein 4.1 molecules, include proteins that function as tumor suppressors. The ERM subgroup member merlin/schwannomin is inactivated in the tumor-predisposition syndrome neurofibromatosis 2 (NF2), and the prototypic 4.1 subgroup member, Protein 4.1B, has been implicated in the molecular pathogenesis of breast, lung and brain cancers. This review focuses on what is known of mechanisms of action and critical protein interactions that may mediate the unique growth inhibitory signals of these two Protein 4.1 tumor suppressors. On the basis of insights derived from studying the NF2 tumor suppressor, we propose a model for merlin growth regulation in which CD44 links growth signals from plasma membrane to the nucleus by interacting with ERM proteins and merlin.
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Affiliation(s)
- Chun-Xiao Sun
- Department of Neurology, Washington University School of Medicine, St Louis, MO 63110, USA
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Zdebska E, Antoniewicz J, Kościelak J. Characterization and quantitation of fatty acids covalently bound to erythrocyte membrane proteins: anion transporter contains 1 mol of fatty acid thiol ester. Arch Biochem Biophys 1989; 273:223-9. [PMID: 2757394 DOI: 10.1016/0003-9861(89)90182-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Human erythrocyte membranes which had been thoroughly extracted with organic solvents contained 20 nmol of fatty acids/mg dry wt. The major fatty acids were palmitic and stearic with their monoethenoic derivatives as minor constituents. No other fatty acids were detected. When solvent-extracted membranes were digested with Pronase about 90% of the original content of fatty acids was retained in the insoluble residue. Fatty acids were linked to membrane proteins through alkali-labile bonds of which 30% were of a thiol ester and the remainder of an O-ester type. This conclusion is based on differential liberation of fatty acids by hydroxylamine at pH 7.0 and pH 11.0. Two extracts of membranes enriched in peripheral proteins (bands 1, 2, 5 and 2.1, 4.1, 4.2, 6) were prepared and extracted with organic solvents but each contained about six times less fatty acids than the parent solvent-extracted membranes. Glycophorin A contains little if any covalently bound fatty acids. Anion transporter (band 3) contains about 1 mol of thiol ester of fatty acid. This accounts for about half of the thiol ester-linked fatty acids in the parent solvent-extracted membranes. Most of the O-ester-linked fatty acids are linked to an undisclosed membrane protein.
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Affiliation(s)
- E Zdebska
- Department of Biochemistry, Institute of Hematology, Warsaw, Poland
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Chetrite G, Dubreuil YL, Cassoly R. Studies on the fragmentation of erythrocyte ghost membrane with p-chloromercuribenzoate in the micromolar range. BIOCHIMICA ET BIOPHYSICA ACTA 1983; 731:16-22. [PMID: 6849908 DOI: 10.1016/0005-2736(83)90392-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The effects of nonsaturating amounts (5-60 nmol/mg membrane protein) of p-chloromercuribenzoate on the stability of unsealed erythrocyte ghosts were studied by turbidimetric measurements and direct observation by phase contrast microscopy. The organic mercurial provokes drastic disorganization of the membrane involving vesicle formation by inter- and externalization of the bilayer. These effects are not associated with a release in solution of membrane proteins which was shown in previous studies to occur at higher p-chloromercuribenzoate concentration. Attempts have been made to identify the proteins involved in this phenomenon by the use of nonsaturating amounts of radioactively-labelled p-chloromercuribenzoate. Actin and band 3 protein which are the first to be labelled, represent plausible candidates as sensitive targets for the disrupting organic mercurial. Stroma obtained from spherocytes did not show significant differences with normocytes in their stability with regard to p-chloromercuribenzoate. Other reagents including N-ethylmaleimide, diamide and DNAase I were also studied. The results suggest strongly that the integrity of the sulfhydryl groups of actin, as well as those of band 3 protein, is essential for the stability of the erythrocyte membrane.
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Ortner MJ, Galvin MJ, Chignell CF, McRee DI. A circular dichroism study of human erythrocyte ghost proteins during exposure to 2450 MHz microwave radiation. CELL BIOPHYSICS 1981; 3:335-47. [PMID: 6175419 DOI: 10.1007/bf02785118] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The effect of 2450 MHz microwave radiation on the proteins of human erythrocyte ghosts has been investigated using circular dichroism spectroscopy. A specially constructed waveguide inserted into the spectropolarimeter allowed the continuous recording of optical activity before, during and after microwave irradiation. The data indicate that high levels of microwave radiation (600 mW/g, specific absorption rate) induce decreases in alpha-helical conformation that may result from both thermal vibrations and increased strain on the intramolecular hydrogen bonds that maintain secondary structure. The latter effect may result from differential intramolecular interactions with the oscillating electric field. Spectrin (bands 1 and 2) isolated from the ghosts was more sensitive to microwave irradiation than intact ghosts, and spectrin-depleted vesicles were the least sensitive. The data, therefore, indicate that the alpha-helical conformation of spectrin is altered by high levels of microwave radiation.
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Lesslauer W. (10.5 A)-1 diffraction and transmembrane proteins of erythrocyte ghost membranes. BIOCHIMICA ET BIOPHYSICA ACTA 1980; 600:108-16. [PMID: 7397163 DOI: 10.1016/0005-2736(80)90416-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Four types of erythrocyte ghost membrane (human ghosts, human ghosts stripped of major non-integral membrane proteins, sheep ghosts and agglutinated sheep ghosts) were studied by X-ray diffraction. Specimens of oriented and stacked membranes in an aqueous environment were used for diffraction experiments. Interferences from the membrane profile and from structures within the plane of the membrane were separated in the recorded patterns. Strongly equatorial diffraction bands at (10.5 A)-1 were identified as in-plane diffraction and correlated with probable alpha-helical conformation of the transmembrane polypeptide chains of glycophorin and band III protein.
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Chang K, Williamson JR, Zarkowsky HS. Effect of heat on the circular dichroism of spectrin in hereditary pyropoikilocytosis. J Clin Invest 1979; 64:326-8. [PMID: 447859 PMCID: PMC372121 DOI: 10.1172/jci109456] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Hereditary pyropikilocytosis is a hemolytic anemia in which the erythrocytes show increased sensitivity to heat-induced fragmentation. Circular dichroism measurements were employed to study the effect of heat on the secondary structure of pyropoikilocyte membrane proteins. The magnitude of the ellipticity at 222 nm over the temperature range from 25 degrees to 70 degrees C was determined for erythrocyte ghosts, spectrin, and ghost residue after extraction. In pyropoikilocyte ghosts, protein denaturation began at a lower temperature and the midpoint of the structural transition was displaced from 49 degrees C (the value for normal ghosts) to 44 degrees C. This thermal transition was present in spectrin, but not in the ghost residue after extraction. We conclude that an abnormality in the spectrin molecule alters the physical and morphologic properties of the erythrocyte membrane in pyropoikilocytosis.
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Cabantchik ZI, Knauf PA, Rothstein A. The anion transport system of the red blood cell. The role of membrane protein evaluated by the use of 'probes'. BIOCHIMICA ET BIOPHYSICA ACTA 1978; 515:239-302. [PMID: 29666 DOI: 10.1016/0304-4157(78)90016-3] [Citation(s) in RCA: 630] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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