scholarly journals Heat Shock Protein 70 Family in Response to Multiple Abiotic Stresses in the Silkworm

Insects ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 928
Author(s):  
Shou-Min Fang ◽  
Qian Zhang ◽  
Yu-Li Zhang ◽  
Gui-Zheng Zhang ◽  
Ze Zhang ◽  
...  
Keyword(s):  
Heat Shock ◽  
Heat Shock Protein ◽  
Abiotic Stresses ◽  
Heat Shock Protein 70 ◽  
Thermal Stresses ◽  
Fat Body ◽  
Whole Genome ◽  
Silkworm Larvae ◽  
Shock Proteins ◽  
Heat Shock Cognates

The 70 kDa heat shock proteins play important roles in protecting organisms against environmental stresses, which are divided into stress-inducible forms (HSP70s) and heat shock cognates (HSC70s). In this study, heat shock protein 70 family was identified in the whole genome of the silkworm. Based on the known nomenclature and phylogenetic analysis, four HSP70s and five HSC70s were classified. Relatively, heat shock cognates were more conservative and were constitutively expressed in various tissues of the silkworm larvae. Under thermal (37 °C and 42 °C) and cold (2 °C) stresses, the expressions of HSP70–1, HSP70–2, and HSP70–3 were up-regulated, and the highest induction reached 4147.3, 607.1, and 1987.3 times, respectively. Interestingly, HSC70–1, HSC70–4, and HSC70–5 also showed slight induced expressions in the fat body and/or midgut under thermal stresses. In addition, the expression of HSP70–1 was induced by dichlorvos and phoxim insecticides, while most HSC70 genes were inhibited. The results suggested that stress-inducible forms play more important roles in adaptation to various stresses than HSC70s.

scholarly journals Expression of heat shock protein 70 is insufficient to extend Drosophila melanogaster longevity

2019 ◽  
Author(s):  
Chengfeng Xiao ◽  
Danna Hull ◽  
Shuang Qiu ◽  
Joanna Yeung ◽  
Jie Zheng ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Drosophila Melanogaster ◽  
Heat Shock ◽  
Heat Shock Protein ◽  
Stress Resistance ◽  
Heat Shock Protein 70 ◽  
Biological Effect ◽  
Hsp70 Expression ◽  
Gene Encoding ◽  
Shock Proteins

AbstractIt has been known for over 20 years that Drosophila melanogaster flies with twelve additional copies of the hsp70 gene encoding the 70 kDa heat shock protein lives longer after a non-lethal heat treatment. Since the heat treatment also induces the expression of additional heat shock proteins, the biological effect can be due either to HSP70 acting alone or in combination. This study used the UAS/GAL4 system to determine whether hsp70 is sufficient to affect the longevity and the resistance to thermal, oxidative or desiccation stresses of the whole organism. We observed that HSP70 expression in the nervous system or muscles has no effect on longevity or stress resistance but ubiquitous expression reduces the life span of males. We also observed that the down-regulation of Hsp70 using RNAi did not affect longevity.

scholarly journals BAG3 Is a Modular, Scaffolding Protein that physically Links Heat Shock Protein 70 (Hsp70) to the Small Heat Shock Proteins

2017 ◽  
Vol 429 (1) ◽  
pp. 128-141 ◽  
Author(s):  
Jennifer N. Rauch ◽  
Eric Tse ◽  
Rebecca Freilich ◽  
Sue-Ann Mok ◽  
Leah N. Makley ◽  
...  
Keyword(s):  
Heat Shock ◽  
Heat Shock Proteins ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Small Heat Shock Proteins ◽  
Scaffolding Protein ◽  
Shock Proteins

scholarly journals Flagellin Contamination of Recombinant Heat Shock Protein 70 Is Responsible for Its Activity on T Cells

2006 ◽  
Vol 282 (7) ◽  
pp. 4479-4484 ◽  
Author(s):  
Zhiyong Ye ◽  
Yunn-Hwen Gan
Keyword(s):  
Escherichia Coli ◽  
T Cells ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Burkholderia Pseudomallei ◽  
Jurkat T Cells ◽  
Recombinant Hsp70 ◽  
Shock Proteins

Heat shock proteins (Hsp) 60 and 70 have been intensively studied for their ability to activate innate immunity. Heat shock proteins had been shown to induce the activation of dendritic cells, T cells, and B cells. However, the possible contamination of endotoxin in heat shock protein preparations makes their function as an activator of immune system ambiguous. Here, we examined the ability of bacterial Hsp60 and Hsp70 to activate Jurkat T cells and primary T cells. We found that Burkholderia pseudomallei Hsp70 and Mycobacterium tuberculosis Hsp70 could costimulate Jurkat T cells to make IL-2 and signal through TLR5. This costimulatory activity is not due to endotoxin or contaminants signaling via TLR2 nor TLR4. However, recombinant Hsp70 expressed in Escherichia coli ΔfliC strain completely lost its ability to costimulate T cells. Thus, the activation of T cells by recombinant Hsp70 is ascribed to flagellin contamination.

scholarly journals THE ROLE OF THE HEAT SHOCK PROTEIN 70 IN THE PATHOGENESIS OF CARDIOVASCULAR PATHOLOGY

2019 ◽  
Vol 21 (2) ◽  
pp. 201-208
Author(s):  
O. A. Ponasenko ◽  
L. V. Gankovskaya ◽  
O. A. Svitich
Keyword(s):  
Innate Immunity ◽  
Cardiovascular Diseases ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Heat Shock Protein ◽  
Arterial Hypertension ◽  
Heat Shock Protein 70 ◽  
Cardiovascular Pathology ◽  
Shock Proteins

The problem of studying cardiovascular diseases (CVD) for a long time remains extremely important, and, therefore, there are many works that offer new ways to diagnose and treat this group of diseases. Great opportunities are provided by the study of molecular interactions for a more accurate understanding of the pathogenesis of cardiovascular pathology. Many studies have recently been devoted to finding potential markers of CVD risk with the aim of more accurate and early diagnosis. In this review we analyze the latest literature data dedicated to the role of heat shock protein 70 (HSP70) in cardiovascular pathology. HSP70 take part in such processes as arterial hypertension, coronary heart disease, and atherosclerosis. In atherogenesis, serum heat shock proteins 70 play a major role. It has been proven that in patients with a high concentration of heat shock protein molecules circulating in the blood, increased values of the carotid intima-media complex were observed. The important role of antibodies to circulating HSP70 is noted. Found an association of high levels of these antibodies with atherosclerosis in patients with arterial hypertension in history, with myocardial infarction. Low levels of anti-HSP70 antibodies are observed in patients with acute coronary syndrome. This proves the complexity of the mechanism and the dual role of antibodies against serum heat shock proteins 70. Thus, antibodies against heat shock proteins 70 can be assessed as a protective marker, and as a predictor, which requires further study, and the HSP70 molecules themselves can somehow to participate in the development of cardiovascular pathologies. Much attention is paid to the role of the inflammatory process and the mechanisms of innate immunity in CVD. As it is currently believed that Danger-associated molecular patterns (DAMPs) are involved in the pathogenesis of these pathologies in the context of a “hazard/damage” model. According to this model, the triggering factor is stress, leading to the release of DAMPs and their binding to innate immunity receptors - Toll-like receptors (TLRs). Activation of TLRs triggers the signaling cascade in the cell leading to the synthesis of pro-inflammatory cytokines. This contributes to the development of inflammation, which can provoke the emergence of new pathological processes in the body and worsen the course of existing diseases. The identification of new potential markers and knowledge of the molecular mechanisms of the pathogenesis of CVD can play an important role in the development of a new individual approach to the prevention of cardiovascular diseases.

Ultrastructural Observations and Heat Shock Protein 70 in Induced Unilateral Abdominal Cryptorchh) Testis in Rats

1997 ◽  
Vol 3 (S2) ◽  
pp. 175-176
Author(s):  
F. Al-Bagdadi ◽  
S. Farouqi ◽  
R. Stout ◽  
P. Crawford ◽  
J. Chandler ◽  
...  
Keyword(s):  
Heat Shock ◽  
Heat Shock Protein ◽  
Testicular Cancer ◽  
Heat Shock Protein 70 ◽  
Undescended Testis ◽  
Irreversible Damage ◽  
Heat Treated ◽  
Cryptorchid Testis ◽  
Shock Proteins ◽  
Unilateral Cryptorchidism

Infertility has been reported to be a significant consequence of cryptorchidism. Testicular cancer has been increasing since the beginning of the century (2). It has been reported in men with unilateral cryptorchidism who develop cancer that 75% of the cases are in the undescended testis. In earlier reports, investigators found that almost half of the cryptorchid testis that developed testicular cancer were abdominal (3). The extent of the degenerative changes are more extensive in the abdominal testis than the inguinal testis (1). Heat shock proteins have been detected in normal as well as in heat treated testes (4, 7). It has been stated that unchecked heat shock protein leads to irreversible damage and ultimately cell death (6). Heat shock protein is used in this study as a marker. The long range objective of this study is to determine the sequence of the ultrastructural degenerative damages of the testis over specific periods in rats as a model and relate these changes to a comparable human age.

scholarly journals Elevated circulating heat shock protein 70 and its antibody concentrations in chronic spontaneous urticaria

2017 ◽  
Vol 31 ◽  
pp. 039463201775044 ◽  
Author(s):  
Alicja Kasperska-Zając ◽  
Aleksandra Damasiewicz-Bodzek ◽  
Katarzyna Bieniek ◽  
Agnieszka Skrzypulec-Frankel ◽  
Krystyna Tyrpien-Golder ◽  
...  
Keyword(s):  
Immune System ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Chronic Spontaneous Urticaria ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Shock Proteins ◽  
And Function

Heat shock proteins (Hsp) play a complex role in cytoprotection, inflammation, and function of the immune system. They may be involved in pathogenesis of various diseases. Our aim was to determine circulating Hsp70 and anti-Hsp70 antibodies concentrations in patients with chronic spontaneous urticaria (CSU). Concentrations of Hsp70 in plasma and anti-Hsp70 antibodies in serum as well as serum C-reactive protein (CRP) were measured in CSU patients and in the controls. Plasma Hsp70 concentrations were significantly higher in CSU (all) and mild CSU patients as compared with the controls. Moderate–severe CSU patients tended to show higher Hsp70 concentration as compared with the controls, but not with mild activity of the disease. There were no significant differences in Hsp70 concentration between moderate–severe and mild CSU patients. Serum anti-Hsp70 antibodies concentrations were significantly higher in CSU (all) and mild CSU in comparison to the controls. Association was observed between anti-Hsp70 antibodies and increased CRP concentration; however, no correlation between anti-Hsp70 and Hsp70 concentrations was seen in the patients. It seems that up-regulation of Hsp70 in CSU may induce marked increase in anti-Hsp70 antibodies production, which are accompanied by parallel changes in CRP concentration. We suggest that Hsp may be released in CSU in response to stressful stimuli, such as inflammation.

scholarly journals Regulation of Apoptotic and Inflammatory Cell Signaling in Cerebral Ischemia

2008 ◽  
Vol 109 (2) ◽  
pp. 339-348 ◽  
Author(s):  
Rona G. Giffard ◽  
Ru-Quan Han ◽  
John F. Emery ◽  
Melissa Duan ◽  
Jean Francois Pittet
Keyword(s):  
Cerebral Ischemia ◽  
Heat Shock ◽  
Heat Shock Proteins ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Multiple Points ◽  
Inflammatory Cytokine Production ◽  
Response To Stress ◽  
Survival Signaling ◽  
Shock Proteins

Although heat shock proteins have been studied for decades, new intracellular and extracellular functions in a variety of diseases continue to be discovered. Heat shock proteins function within networks of interacting proteins; they can alter cellular physiology rapidly in response to stress without requiring new protein synthesis. This review focuses on the heat shock protein 70 family and considers especially the functions of the inducible member, heat shock protein 72, in the setting of cerebral ischemia. In general, inhibiting apoptotic signaling at multiple points and up-regulating survival signaling, heat shock protein 70 has a net prosurvival effect. Heat shock protein 70 has both antiinflammatory and proinflammatory effects depending on the cell type, context, and intracellular or extracellular location. Intracellular effects are often antiinflammatory with inhibition of nuclear factor-kappaB signaling. Extracellular effects can lead to inflammatory cytokine production or induction of regulatory immune cells and reduced inflammation.

Diminished heat shock protein 70 mRNA induction in aged rat hearts after ischemia

1994 ◽  
Vol 267 (5) ◽  
pp. H1795-H1803 ◽  
Author(s):  
Y. Nitta ◽  
K. Abe ◽  
M. Aoki ◽  
I. Ohno ◽  
S. Isoyama
Keyword(s):  
Heat Shock ◽  
Heat Shock Proteins ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Protective Mechanisms ◽  
Sensing Mechanism ◽  
Mrna Induction ◽  
Age Related ◽  
Rat Hearts ◽  
Shock Proteins

Vulnerability of aged hearts to ischemia may be due to defects in protective mechanisms provided by heat shock proteins (HSPs). To determine whether there is a defect in the induction of HSPs by ischemia in old hearts, HSP72 and HSP73 (inducible and constitutive HSP70, respectively) mRNA induction was examined in young (2-mo-old; n = 36) and old (18-mo-old; n = 32) rat hearts. Transient (10- or 20-min) ischemia was applied by tightening a snare placed around left coronary arterial branches 3 days before examination to avoid the effect of operation on induction. HSP72 mRNA was induced markedly in young hearts after 10-min ischemia, peaked at 2 h, but was induced only slightly in old hearts. HSP73 mRNA was also induced in young hearts, peaked at 4 h, but was not induced in old hearts. The mRNAs were markedly induced in old hearts as well after 20-min ischemia, which was accompanied by the induction of HSP72 protein. Thus the age-related modulation of HSP72 and HSP73 mRNAs suggests a defective sensing mechanism for ischemia in old hearts.

Sign in / Sign up

Export Citation Format

Share Document