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Chen SX, Wang SK, Yao PW, Liao GJ, Na XD, Li YY, Zeng WA, Liu XG, Zang Y. Early CALP2 expression and microglial activation are potential inducers of spinal IL-6 up-regulation and bilateral pain following motor nerve injury. J Neurochem 2018; 145:154-169. [DOI: 10.1111/jnc.14317] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 01/28/2018] [Accepted: 01/30/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Shao-Xia Chen
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
- Department of Anesthesiology; Cancer Center, Sun Yat-Sen University; State Key Laboratory of Oncology in South China; Collaborative, Innovation Center for Cancer Medicine; Guangzhou China
| | - Shao-Kun Wang
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
| | - Pei-Wen Yao
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
| | - Guang-Jie Liao
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
| | - Xiao-Dong Na
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
- Department of Pathophysiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
| | - Yong-Yong Li
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
| | - Wei-an Zeng
- Department of Anesthesiology; Cancer Center, Sun Yat-Sen University; State Key Laboratory of Oncology in South China; Collaborative, Innovation Center for Cancer Medicine; Guangzhou China
| | - Xian-Guo Liu
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
| | - Ying Zang
- Pain Research Center and Department of Physiology; Zhongshan Medical School of Sun Yat-Sen University; Guangzhou China
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Lim D, Lu Y, Rudd CE. Non-cleavable talin rescues defect in the T-cell conjugation of T-cells deficient in the immune adaptor SKAP1. Immunol Lett 2016; 172:40-6. [PMID: 26905930 PMCID: PMC4860717 DOI: 10.1016/j.imlet.2016.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 02/02/2016] [Accepted: 02/05/2016] [Indexed: 11/09/2022]
Abstract
Skap1−/− T-cells show impaired talin and RIAM localization at the anti-CD3 beads. Talin cleavage is altered in Skap1−/− T-cells. Cleavage resistant talin (L432G) restored normal conjugation of Skap1−/− T-cells. Immune cell adaptor SKAP1 interfaces with regulation of talin and RIAM in T-cells.
While the cytoskeletal protein talin binds to the β-chain of LFA-1, the immune cell adaptor SKAP1 (SKAP-55) binds to the α-chain of the same integrin via RapL. Whereas calpain protease cleavage of talin is important for LFA-1 activation, it has been unclear whether SKAP1 can alter the function of talin or its associated adaptor RIAM in T-cells. In this paper, we report that Skap1−/− T-cells showed a reduction in the translocation of talin and RIAM to the contact interface of T-cells with antigenic beads or dendritic cells (DCs) presenting OVA peptide to OT-1 T-cells. In addition, Skap1−/− T-cells show an altered pattern of talin cleavage, while the expression of a cleavage resistant form of talin (L432G) restored the impaired adhesion of OT1 transgenic Skap1−/− T-cells with DCs. SKAP1 therefore can affect the function of talin in T-cells needed for optimal T-cell/DC conjugation.
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Affiliation(s)
- Daina Lim
- Cell Signalling Section, Division of Immunology, Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK; Cambridge Institute of Medical Research, Hills Road, CB2 OXY Cambridge, UK
| | - Yuning Lu
- Cell Signalling Section, Division of Immunology, Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK; Cambridge Institute of Medical Research, Hills Road, CB2 OXY Cambridge, UK
| | - Christopher E Rudd
- Cell Signalling Section, Division of Immunology, Department of Pathology, Tennis Court Road, University of Cambridge, Cambridge CB2 1QP, UK; Cambridge Institute of Medical Research, Hills Road, CB2 OXY Cambridge, UK.
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Zang Y, Chen SX, Liao GJ, Zhu HQ, Wei XH, Cui Y, Na XD, Pang RP, Xin WJ, Zhou LJ, Liu XG. Calpain-2 contributes to neuropathic pain following motor nerve injury via up-regulating interleukin-6 in DRG neurons. Brain Behav Immun 2015; 44:37-47. [PMID: 25150005 DOI: 10.1016/j.bbi.2014.08.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/25/2014] [Accepted: 08/12/2014] [Indexed: 01/09/2023] Open
Abstract
Motor nerve injury by L5 ventral root transection (L5-VRT) initiates interleukin-6 (IL-6) up-regulation in primary afferent system contributing to neuropathic pain. However, the early upstream regulatory mechanisms of IL-6 after L5-VRT are still unknown. Here, we monitored both the activity of calpain, a calcium-dependent protease suggested as one of the earliest mediators for cytokine regulation, and the expression of IL-6 in bilateral L4-L6 dorsal root ganglias (DRGs) soon after L5-VRT. We found that the protein level of calpain-2 in DRGs, but not calpain-1 was increased transiently in the first 10 min(-1)h ipsilaterally and 20 min(-1)h contralaterally after L5-VRT, long before mechanical allodynia was initiated (5-15 h ipsilaterally and 15 h(-1)d contralaterally). The early activation of calpain evaluated by the generation of spectrin breakdown products (SBDP) correlated well with IL-6 up-regulation in bilateral DRGs. Double immunofluorescence staining revealed that almost all the calpain-2 positive neurons expressed IL-6, indicating an association between calpain-2 and IL-6. Inhibition of calpain by pre-treatment with MDL28170 (25mg/kg, i.p.) attenuated the rat mechanical allodynia and prevented the early up-regulation of IL-6 following L5-VRT. Addition of exogenous calpain-2 onto the surface of left L5 DRG triggered a temporal allodynia and increased IL-6 in bilateral DRGs simultaneously. Taken together, the early increase of calpain-2 in L5-VRT rats might be responsible for the induction of allodynia via up-regulating IL-6 in DRG neurons.
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Affiliation(s)
- Ying Zang
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China.
| | - Shao-Xia Chen
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Guang-Jie Liao
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China; Department of Pathology, The Red Cross Hospital of Yulin, 1 Jinwang Rd., Yulin 537000, China
| | - He-Quan Zhu
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Xu-Hong Wei
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Yu Cui
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Xiao-Dong Na
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China; Department of Pathophysiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Rui-Ping Pang
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Wen-Jun Xin
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Li-Jun Zhou
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
| | - Xian-Guo Liu
- Pain Research Center and Department of Physiology, Zhongshan Medical School of Sun Yat-Sen University, 74 Zhongshan Rd. 2, Guangzhou 510080, China
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Kobayashi S, Yamashita K, Takeoka T, Ohtsuki T, Suzuki Y, Takahashi R, Yamamoto K, Kaufmann SH, Uchiyama T, Sasada M, Takahashi A. Calpain-mediated X-linked inhibitor of apoptosis degradation in neutrophil apoptosis and its impairment in chronic neutrophilic leukemia. J Biol Chem 2002; 277:33968-77. [PMID: 12121983 DOI: 10.1074/jbc.m203350200] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The number of neutrophils in the blood and tissues is controlled by constitutive apoptotic programmed cell death and clearance by phagocytes such as macrophages. Here, we found that calpains cleave the X-linked inhibitor of apoptosis (XIAP) in vitro, producing fragments that are unable to inhibit caspase-3. These fragments were detected in normal neutrophils but were unstable and rapidly degraded. Calpain inhibition delayed tumor necrosis factor-alpha-induced apoptosis of normal neutrophils, consistent with a role for calpains in regulating the onset of apoptosis. Interestingly, neutrophils from three patients with chronic neutrophilic leukemia, a rare syndrome characterized by accumulation of mature neutrophils, exhibited decreased mu-calpain expression, diminished calpain activity, and impaired XIAP degradation. Neutrophils from these patients displayed a delay in spontaneous, Fas-stimulated, and tumor necrosis factor-alpha-induced apoptosis. These observations suggest that calpain-mediated XIAP degradation contributes to initiation of apoptosis in normal neutrophils and dysfunction of this regulatory pathway can lead to pathological neutrophil accumulation.
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Affiliation(s)
- Susumu Kobayashi
- Department of Hematology and Oncology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawara-cho, Sakyo-ku, Kyoto 606-8507, Japan
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Glass JD, Culver DG, Levey AI, Nash NR. Very early activation of m-calpain in peripheral nerve during Wallerian degeneration. J Neurol Sci 2002; 196:9-20. [PMID: 11959150 DOI: 10.1016/s0022-510x(02)00013-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Peripheral nerve injury results in a series of events culminating in degradation of the axonal cytoskeleton (Wallerian degeneration). In the time period between axotomy and cytoskeletal degradation (24-48 h in rodents), there is calcium entry and activation of calpains within the axon. The precise timing of these events during this period is unknown. In the present study, antibodies were generated to three distinct peptide epitopes of m-calpain, and a fusion protein antibody was generated to the intrinsic calpain inhibitor calpastatin. These antibodies were used to measure changes in these proteins in mouse sciatic nerves during Wallerian degeneration. In sciatic nerve homogenates and cultured dorsal root ganglion (DRG) neurites, m-calpain protein was significantly reduced in transected nerves very early after nerve injury, long before axonal degeneration occurred. Levels of m-calpain protein remained low as compared to control nerves for the remainder of the 72-h time course. No changes in calpastatin protein were evident. Systemic treatment of animals with the protease inhibitor leupeptin partially prevented the rapid loss of calpain protein. Removal of calcium in DRG cultures had the same effect. These data indicate that m-calpain protein is lost very early after axonal injury, and likely reflect activation and degradation of this protein long before the cytoskeleton is degraded. Calpain activation may be an early event in a proteolytic cascade that is initiated by axonal injury and culminates with axonal degeneration.
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Affiliation(s)
- Jonathan D Glass
- Department of Neurology, Emory University School of Medicine, 1639 Pierce Drive, Suite 6000, Atlanta, GA 30322, USA.
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Endo S, Ishiguro S, Tamai M. Possible mechanism for the decrease of mitochondrial aspartate aminotransferase activity in ischemic and hypoxic rat retinas. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1450:385-96. [PMID: 10395949 DOI: 10.1016/s0167-4889(99)00062-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glutamate is believed to be an excitatory amino acid neurotransmitter in the retina. Enzymes for glutamate metabolism, such as glutamate dehydrogenase, ornithine aminotransferase, glutaminase, and aspartate aminotransferase (AAT), exist mainly in the mitochondria. The abnormal increase of intracellular calcium ions in ischemic retinal cells may cause an influx of calcium ions into the mitochondria, subsequently affecting various mitochondrial enzyme activities through the activity of mitochondrial calpain. As AAT has the highest level of activity among enzymes involved in glutamate metabolism, we investigated the change of AAT activity in ischemic and hypoxic rat retinas and the protection against such activity by calpain inhibitors. We used normal RCS (rdy+/rdy+) rats. For the in vivo studies, we clamped the optic nerve of anesthetized rats to induce ischemia. In the in vitro studies, the eye cups were incubated with Locke's solution saturated with 95% N2/5% CO2. The activity of cytosolic AAT (cAAT) was about 20% of total activity, whereas mitochondrial AAT (mAAT) was about 75% in rat retina. Ninety minutes of ischemia or hypoxia caused a 20% decrease in mAAT activity, whereas cAAT activity remained unchanged. To examine the contribution of intracellular calcium ions to the degradation of mAAT, we used Ca2+-free Locke's solution containing 1 mM EGTA, ryanodine (Ca2+ channel blocker), and thapsigargin (Ca2+-ATPase inhibitor). In the present study, thapsigargin in Ca2+-free Locke's solution, but not ryanodine in this solution, was found to prevent AAT degradation. AAT degradation was also prevented by calpain inhibitors (Ca2+-dependent protease inhibitor) such as calpeptin at 1 nM, 10 nM, 0.1 microM, 1 microM and 10 microM, and by calpain inhibitor peptide, but not by other protease inhibitors (10 microM leupeptin, pepstatin, chymostatin). Additionally, we determined the subcellular localization of calpain activity and examined the change of calpain activity in ischemic rat retinas. Our results suggest that decreased activity of mAAT in ischemic and hypoxic rat retinas might be evoked by the degradation by calpain-catalyzed proteolysis in mitochondria.
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Affiliation(s)
- S Endo
- Department of Ophthalmology, Tohoku University School of Medicine, 1-1 Seiryou-machi, Aoba-ku, Sendai 980-8574, Japan.
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Griffin HD, Goddard C. Rapidly growing broiler (meat-type) chickens: their origin and use for comparative studies of the regulation of growth. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1994; 26:19-28. [PMID: 8138043 DOI: 10.1016/0020-711x(94)90190-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
1. Rapidly growing (meat-type) chickens have been intensively selected for over 50 years and grow up to four times faster than "layer" strains selected for reproductive traits. 2. Comparison between these lines are increasingly being used to study mechanisms underlying lean tissue growth. 3. Selection for increased growth has resulted in some undesirable consequences such as poor reproductive performance, excessive fatness, increased skeletal abnormalities and ascites. 4. The biochemistry, physiology and molecular biology of these changes are reviewed.
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Affiliation(s)
- H D Griffin
- Department of Cellular and Molecular Biology, AFRC Roslin Institute (Edinburgh), Midlothian, U.K
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Samis JA, Back DW, Graham EJ, DeLuca CI, Elce JS. Constitutive expression of calpain II in the rat uterus during pregnancy and involution. Biochem J 1991; 276 ( Pt 2):293-9. [PMID: 2049063 PMCID: PMC1151090 DOI: 10.1042/bj2760293] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Partial genomic clones for the 80 kDa subunits of rat calpains I and II have been isolated. Some exons have been located and sequenced, and used to synthesize RNA probes specific for each isoenzyme. The levels of total DNA, soluble protein, calpain II 80 kDa subunit and the mRNA for this subunit were measured in parallel in separate extracts of non-pregnant, pregnant and post-partum rat uteri. The amount of total DNA, expressed as mg/g wet wt. of tissue, was found to remain constant throughout this period, except for a slight rise during involution. Calpain I was present in all samples in very small amounts. The amounts of calpain II 80 kDa subunit (measured on immunoblots) and of its mRNA (measured by means of slot-blots) also did not vary, when expressed in terms of units per g wet wt., during the 10-fold growth of the uterus during pregnancy and its post-partum involution. It was concluded that expression of calpain II was constitutive in this normal tissue, which is undergoing rapid growth and involution under complex hormonal control.
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Affiliation(s)
- J A Samis
- Department of Biochemistry, Queen's University, Ontario, Canada
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